{"Bibliographic":{ "Title":"The cycling of toxic organic substances in the Great Lakes ecosystem : ... annual progress report to the Office of Marine Pollution Assessment, National Oceanic and Atmospheric Administration.", "Authors":"Great Lakes Environmental Research Laboratory, NOAA", "Publication date":"1980", "Publisher":"Great Lakes Environmental Research Laboratory, NOAA" }, "Administrative":{ "Date created":"02-21-2025", "Language":"English", "Rights":"CC 0", "Size":"0005003134" }, "apiVersion": "2024-07-31-preview", "modelId": "prebuilt-read", "stringIndexType": "textElements", "content": "TD 427 .07 G7 Apr 80\nFIRST SEMIANNUAL PROGRESS REPORT to The Office of Marine Pollution Assessment National Oceanic and Atmospheric Administration\nTHE CYCLING OF TOXIC ORGANIC SUBSTANCES IN THE GREAT LAKES ECOSYSTEM\nLAKE SUPERIOR\n\u00bfSt. Marys River\nLAKE MICHIGAN\nLAKE HURON\nSt. Lawrence\n-River\nLAKE ONTARIO\nNiagara River\nJSt. Clair River\nLAKE~3 ST. CLAIR Detroit River\nLAKE ERIE\nApril 1980 Cooperative Program Between Great Lakes Environmental Research Laboratory ERL/NOAA Ann Arbor, Michigan 48104 and University of Michigan Ann Arbor, Michigan 48109\nGLERI LIBRARY\nFirst Semiannual Progress Report To The Office Of Marine Pollution Assessment National Oceanic and Atmospheric Administration\nTHE CYCLING OF TOXIC ORGANIC SUBSTANCES IN THE GREAT LAKES ECOSYSTEM\nApril 1980\nCooperative Program Between\nGreat Lakes Environmental Research Laboratory ERL/NOAA Ann Arbor, Michigan 48104 and\nUniversity of Michigan\nAnn Arbor, Michigan\n48109\nIntroduction\nThe Great Lakes Environmental Research Laboratory (GLERL) , with the support of NOAA's Office of Marine Pollution Assessment (OMPA) has initiated a program on the cycling, transport and fate of toxic organic compounds in the Great Lakes. Our objective is to improve our knowledge of where selected contaminants are within the ecosystem, what their expected residence time in any location or phase will be, how rapidly and into what they will decompose and where they will finally reside under conditions of long-term low-level leakage into the environment or a major loading from some point source. This information is critical for toxicologists, ecologists and resource managers to evaluate the potential impacts of particular materials intro- duced into the Great Lakes region. In the final analysis environmental resource management comes down to a trade off between \"acceptable risks\" and \"unacceptable costs\" and best judgments leading to a suitable balance can only be achieved if the information base is sound.\nThe manner in which we address our objective has evolved through in- house discussion, participation in and recommendations of workshops, formal cooperative research planning with members of the University of Michigan staff and discussion with other outside investigators. A cooperative program was established between GLERL and the University of Michigan to bring the research planning to fruition. This has resulted in a program jointly directed by the two organizations to provide the types of expertise needed to attack the problem.\nThe program management established for this cooperative program is shown below:\nGLERL\nCOTR\nDr. E. J. Aubert Director, GLERL Program Coordinator Dr. B. J. Eadie Research Chemist\nUniversity of Michigan Principal Investigator\nDr. A. M. Beeton Director, Great Lakes and Marine Waters Center Program Coordinator Dr. C. P. Rice Assoc. Res. Sci., Great Lakes Res. Div.\nA number of projects have been established and available funds have been obligated.\nThis first semi-annual progress report will cover the approach,\nshort-term goals and an outline of resources followed by a set of progress\n1\nreports on individual projects under the cooperative program.\nApproach\nMost persistent toxic organics behave similarly in the aquatic en- vironment; they are only slightly soluble and partition onto particulate material, they tend to photodecompose as a major removal pathway, they are generally resistant to microbial attack and they concentrate in the sediments. This similarity of behavior makes a modeling approach attractive and recently, toxic cycling models have begun to appear in the literature. These models require compound-specific experimental rate process information tailored for the ecosystem to which it is applied.\nWe propose to employ a systems analysis approach, in which a series of models will be developed. It is our intent to adapt currently avail- able models, which are primarily first order decay approximations or steady state simulations, as well as develop a time dependent ecosystem cycling model. Our models will be continuously upgraded through the results of our process research experiments, both in-house and under contract, along with other information entering the literature. Carrying our process research and modeling simultaneously will allow us to continually determine the weakest or most sensitive areas in our systems approach and define research necessary to address these specific problems. Ultimately our goal is to combine calibrated ecosystem cycling models with system transport models.\nShort Time Goals\nWithin the time frame of the next 1-3 years we propose to work on two classes of toxic organic substances, polynuclear aromatic hydrocarbons (PAH) and polychlorinated biphenyls (PCB). Field and laboratory studies on the rates of process such as volatilization, photodecomposition, sorption onto particulates indigenous to the Great Lakes, aggregation and settling will be designed to support a toxic organic cycling model. Initial models will be adaptations of existing toxic organic cycling models based on a mass balance framework and known decomposition pathways. One and two dimensional transport will be simulated and evaluated first before consider- ing a three dimensional simulation.\nThe polychlorinated biphenyls are a known major contaminant of the Great Lakes and are fairly well studied compounds while the polycyclic aromatic hydrocarbons, which are products of incomplete combustion, are perceived to be a problem near the industrialized regions of the Great Lakes. Very little is known about the environmental distribution and pathways of the latter family of compounds. Therefore, some fairly fundamental work may need to be done prior to developing a calibrated model. Calibration data will be supplied through the field and lab experimental programs conducted in-house, under contract or jointly.\n2\nFigure 1. Toxic Organic Cycling; Procoss Study/Modoling Strntogy\n1982\nRovlow Stato of the Art In Transport and Particle Dynamics Modoling\nRovlow State of the Art in Toxic Organic Cycling Moduls\nDevolop and calibrato stato of the urt lako circulation, transport, particle dynamics and settling model hierarchy at appropriato timo and space scalos\nDovolop and culibrato state of the art toxic cycling model hierarchy for the Great Lakes\nCombino models, run oxorcisos; host workshop for modolors, oxporimentalists and potential usors\n.Identify arons of weakness in process simulations, potential user needs. Initiate process Research (e.g.)\nAir-water exchange\nSame for ecological- toxic cycling processes\nPerform model experiments to develop and test hypoth- eses related to all'\"signif- icant physical processes\n. Photodecomposition\n. Bacterial decomposition\n. Sorption, particlo aggregation, transport and sinking\n1983\n$\nBiological uptake and motabolism\nImprove process submodels\n. Sediment-poro water exchange\nImprove process submodels\n. Zooplankton grazing on particles\n1984\nNext Generation Model\nNext Generation Modol\n1985\nCombino models, exercise and test; host workshop, identify arons of interest and wouknoss, etc.\n1986\nItorato\nProducts Applications\n3\n:\nResource Outline\nFiscal Year 1979\nResource :\nOMPA\nGLERL\n$262.9K $ 9.8K (plus 5 days ship time)\nTotal\n$272.7K\nAllocation of Resource:\nUniv. of Mich $225.4K GLERL\n$ 47.3K\nFiscal Year 1980\nResource :\nOMPA\n$271.9K\nGLERL\n$ 36.6K (plus substantial ship time)\nTotal\n$308.5K\nAllocation of Resource:\nUniv. of Mich.$149.4K GLERL $159.1K\n:\nProject Reports\nStatus reports on the projects under the cooperative program at the University of Michigan and GLERL follow.\n4\nProgress Report April, 1980\n1. Organization: Great Lakes Environmental Research Laboratory NOAA\n2300 Washtenaw Avenue Ann Arbor, Michigan 48104\n2. Principal Investigator: Dr. Brian J. Eadie\n3. Amount of Sponsored Funds : FY 79 - OMPA $2.OK, GLERL $0.8K FY 80 - OMPA $26.5K, GLERL $10.0K\n4. Starting Date: 1 July 1979\n5. Project Completion Date: March, 1982\n6. Title : Toxic Organic Modeling in the Great Lakes\n7. Project Summary:\nThis project is the essence of the overall program, in which our objective is to develop a modeling hierarchy describing the cycling, transport and fate of toxic organic compounds. The limited objectives of this project deal with the development of our first models, to calibrate and test these initial simulations and to use them to further develop the research program. Initial models will be adaptations of existing or currently developing toxic organic cycling models based on a mass balance framework and known decomposition pathways. More comprehensive cycling, transport and fate models will be developed in subsequent projects within this program.\n8. Results and Findings to Date:\nA hierarchy of three levels of models are currently being calibrated for the Great Lakes. The first of these is a simple lake scale two dimensional transport model, incorporating a first order term for removal of contaminants to the sediments. This model was successfully used by Pickett and Dossett (1979) to describe the transport and fate of Mirex in Lake Ontario. If PCB and PAH distribution can be simulated by this simple approximation, then internal cycling processes are not important to the prediction of fate. This model is expected to fail; the magnitude of its inability to simulate the fate of these contaminants will be a measure of the importance of internal processes.\nThe EPA (Athens, Ga. ) EXAMS model, which is a steady state simulation of toxic organics in a simple ecosystem, will be calibrated as a benchmark for our more complicated time dependent simulations. This model will provide insight into the most important internal processes\n5\nwhich will be necessary to realistically simulate the cycling of toxic organics within the lake.\nThe last model to be considered in this project will incorporate time dependent inputs, forcing functions and responses. A figure conceptualizing this framework is included.\nTo date, the first and second of these models have been obtained and initial runs performed. Calibration for the Great Lakes and compounds of interest will take several months. The time dependent model is at the stage where the equations are being programmed and appropriate process coefficients are being tabulated. Initial runs are still several months away.\n9. References\nPickett, R. L. and Dossett, D. (1979) Mirex and the Circulation of Lake Ontario. J. Phys Ocn 9 441-445.\n6\nConceptualized Ecosystem Compartments for- Toxic Organic Model\n\u0661\nAtmosphere.\nPhotolysis 4\nMicrolayer\nT\nYS\nEpilimNION\n1 DISSOLVED\nTT\nK14\nK45\nPhyto\n5 200 + GRAZERS\nMetalImNION\n5\n..\nYS\nLOAD\nSmall\nLARGE PARTICLES\nK\u0131z\nK72\nK37\n:\nHypolimNiON\nSEDIMENT 7\nBENThos\n8 PORS WATER\nTx\nActive Sediment.\nVS\nDeep Sediment\nT= TurbulANT MINING Sc Sinking\n7\n:\n\u00b7 LOAD\nVolAtilIZATION 4\nY S\nTX\nParticles\nConceptual Toxic Cycling Model\nPhotolysis\nVolAtilIZATION\nLOAD\n1 DISSOLVED\n4\nK45\n5 Zoo + GRAZERS\nLOAD\n2 Small\nLARGE\n.\nParticles\nPARTICLES\nK72\nK 37\n6\nSEDIMENT 7\nBENthos\n8 PORE WATER\nPRIMARY Processes\n8\nK14\nPhyto\nK12\n1 DISSOLVED\n2 Zoo +\nMicrobial Metabolism\nPhyto 4\nGrazers 5\n2 Small\n3 LARGE\nK31.\nAerosol\nK21\nK13\nMicrobial\nParticles\nParticles\nMetabolism\nK 27\nK73\n6 BenThos\nSEDIMENT 7\n8 PORE WATER\nSeconDARY Processes\n9\n4\n1 DISSOLVED\nPhotolysis\nPhyto 4\nZoo + Grazers 5\n-\n-\nK115 KSI\nK25 KS2\nK35 + KS3\n\u20ac\n2 Small\n3 LARGE\nPhololysis\nK23 K32\nParticles\nParticles\nK81\n1\n1\nKGI-\nK18\nK76\n6 - BenThos\nKG& #\nSEDIMENT 1\n-\nMetabolism\n!\u01e881\n8 PORE WATER\n- Metabolism\nProcesses of UNKNOWN Importance\n10\nRate Constant\nCompartment\nPrimary\nSecondary\nUnknown\nProcess ..\nK12\nSorption\nDissolved\nK14\nSorption + metabolically enhanced uptake Sorption + metabolically enhanced uptake Volatilization\nKIV\nKIP\nPhotolysis\nK18\nExchange with pore water\nK21\nDesorption\nK2B\nBacterial decomposition\nK23\nAggregation\nParticles\nK25\nUptake by grazers\nK2P\nPhotolysis\nK2A\nAerosol formation\nK27\nSinking\nK3B\nBacterial decomposition\nK32\nDisaggregation\nK35\nUptake by grazers\nK3P\nPhotolysis\nK37\nK31\nDesorption\nK4B\nBacterial decomposition\nDesorption\nPhytoplankton\nAerosol formation\nK4P\nPhotolysis\nK47\nSinking\nK4E\nMetabolic excretion\nK45\nUptake by grazers\nK51\nDesorption\nK52\nParticle disruption\nZooplankton\nK53\nFecal pellet formation Metabolism\nBenthos\nK68\nRelease to pore water Metabolism\nK72\nSmall particle resuspension\nSediments\nK73\nK76\nLarge particle resuspension Uptake by Benthos Desorption\nPore Water\nK81\nK87\nExchange with overlying water Sorption\nK (from compartment) (to compartment)\nletters indicate removal to a decomposition pool.\n11\nLarge Particles\nSinking\nK41\nK4A\nK5M\nK61\nRelease to water\nK6M\nK78\nSma 11\nK13\nSorption\nK15\nProgress Report April, 1980\n1. Organization: Great Lakes Environmental Research Laboratory NOAA\n2300 Washtenaw Avenue Ann Arbor, Michigan 48104\n2. Principal Investigator: Dr. Brian J. Eadie\n3. Amount of Sponsored Funds: FY 79 - OMPA $22.OK, GLERL $4.0K FY 80 - OMPA $50K, GLERL $12.2K\n4. Starting Date: 1 July, 1980\n5. Project Completion Date: October, 1981\n6. Title: Polynuclear Aromatic Hydrocarbons in the Great Lakes Ecosystem\n7. Project Summary:\nThis project has 2 objectives;\nto develop analytical capability to accurately quantitate various PAH's in different parts of the Great Lakes ecosystem, and\nto quantify the levels of selected PAH in parts of the Great Lakes ecosystem.\nThe polycyclic or polynuclear aromatic hydrocarbons are a family of compounds composed of 2 or more condensed benzene rings with occasional incorporations of cyclopentene rings (fluorenes) or hetero atoms N or S. These compounds are products of incomplete combustion of fossil fuels and a large number of the class are known or suspected carcinogens. It is perceived that concentrations of these materials will be high in the industrialized regions of the Great Lakes such as southeastern Lake Michigan. Concentrations of the PAH's and their removal mechanisms are unavailable for virtually all of the Great Lakes ecosystem.\nSeveral published extraction and analytical techniques will be examined and evaluated for analyzing the PAH's in various ecological matrices. Intercalibration exercises with the NMFS/NOAA Seattle laboratory (Bill Macleod) and the University of Minnesota will be conducted. Those techniques selected as yielding best results will be employed to conduct the following analyses:\n. Distribution of PAH's in Great Lakes sediments;\n12\nSamples of sediment from deposition zones in Lakes Erie, Huron and Michigan will be collected and analyzed. Sediments from Lake Superior will be supplied by Dr. Steve Eisenreich of Minnesota. These will be combined with existing analyses of Lake Ontario sediments to produce a first order map.\n. Atmospheric loading of PAH to Lake Michigan;\nAtmospheric particulates will be collected aboard the RV SHENEHON, by U of M investigators aboard their vessels and at selected land sites. These will be shared and analyzed for PAH and PCB.\n. Partitioning of PAH among selected compartments of the lake ecosystem;\nSamples of plankton, benthic organisms, fish and particulate matter will be analyzed.\n;\n8. Results and Findings to Date:\nThus far we have set up and evaluated 2 extraction techniques which give us satisfactory yields. We are currently using a methelyene chloride soxhelet extraction followed by clean up on Sepehadex LH 20. Our samples are spiked with C-14 labelled benzo-a-pyrene and yields are calculated based on the measured extract. Another, simpler clean up procedure is currently being evaluated which employs a molecular size fractionation on a Waters micro particil column.\nThe PAH compounds are being successfully analyzed by both glass capillary gas chromatography, which yields good results for the lower molecular weight compounds and on high performance liquid chromatography which yields best results with the high molecular weight analogs. Technique development and evaluation have been our major effort.\nDuring the past field season, sediments, lake ecosystem and atmospheric particulate samples were collected in Lake Erie, Huron, Michigan and Superior.\nA summary of the initial results from Western Lake Erie follows:\n13\nCONCENTRATION OF PAH IN LAKE ERIE SEDIMENTS (Units: Microgram/gram)\n1 Km offshore of Monroe\n10 Km Offshore Monroe\nCompound (ugkg)\nSediments\n>600 micron\n(1)\nSediments\n>600 micron (1)\nNapthelene\n60\n16\n(2)\n213 + 152\n17\nBipheny 1\n147 +\n130\n18\n50.4 + 62\n18\nFluorene\n68 + 98\n1.7\n32 + 42\n2\nPhenanthrene\n460 + 620\n31 + 25\n30 + 46\n33\nAnthrocenes\n80 + 113\n1.9\n8.3 + 12\n2\nFluoranthrene\n674 + 974\n20\n31 + 35\n20\nPyrene\n304 + 362\n20 + 18\n105 + 175\n20\nBenzo a pyrene\n357\n+ 457\n35.\n88. + 145\n35.\n(1) >600 micron fraction contains both benthos and debris, the fine sediments having been removed.\n(2) A third sample collected from the same location yielded microgram/gram quantities of the measured PAH.\n14\nThe coefficients of variation for standards are below 10% for all compounds on both the GC and the LC. Results in the table indicate there is a large sampling plus handling error involved in the analysis of these compounds.\nThese samples were collected off the Monroe, Michigan power plant, one of the largest coal fired power plants in the world. Raw results presented indicate that concentrations nearshore are nearly an order of magnitude higher but the benthos are not accumulating the materials.\n15\nProgress Report February 1980\n1. Organization: Great Lakes and Marine Waters Center University of Michigan 2200 Bonisteel Blvd. Ann Arbor, Michigan 48109\n2. Investigators:\nDr. Alfred M. Beeton Project Director\nDr. Clifford P. Rice Principal Investigator\nDr. W.J. Weber Co-Principal Investigator\nDr. M. S. Simmons Co-Principal Investigator\nDr. D.K. Rea Co-Principal Investigator\nDr. R.M. Owen Co-Principal Investigator\nDr. G.A. Meadows Co-Principal Investigator\nDr. Nathan Hawley Co-Principal Investigator\n3. Amount of Sponsored Funds: $259,311\n4. Starting Date: 1 July 1979\n5. Project completion date: 30 June 1979 (first year)\n6. Title: The Cycling of Toxic Organic Substances in the Great Lakes Ecosystem\n7. . Project Summary:\nThis research project is the administrative structure for implementa- tion of the cooperative NOAA/University of Michigan study of the Cycling of Toxic Organic Substances in the Great Lakes Ecosystem. PCBs and PAHs are identified for initial emphasis in this study. The project has been divided into separate tasks. The tasks identify activities and individuals within both the NOAA/Great Lakes Environmental Laboratory and the University of Michigan. The specific activities involve model implementation and/or conceptualization on the movement of PCBs and PAHs with special consideration being given to the photodecomposition and sorption onto particulates. Specific studies on the movement within the Great Lakes stress the exchange of PCBs and PAHs at the air/water interface and their transport on particles in the water column. It is the purpose of this project to coordinate the University of Michigan tasks into a common purpose that complements the ongoing toxic organic cycling activities of the Great Lakes Environmental Research Labora- tory personnel.\n8. Results and Findings to date:\nBy making use of the combined ship facilities of the two organizations this last sampling season it has been possible to sample the Great Lakes more extensively than might have been possible otherwise. The laboratory facilities and highly trained labor force available through the University has greatly expanded the capabilities for NOAA and the University to carry out a sophisti- cated study.\n16\nProgress Report . February 1980\n1. Organization: Great Lakes Research Division The University of Michigan I.S.T. Bldg. Room 3114 2200 Bonisteel Blvd. Ann Arbor, Michigan 48109\n2. Principal Investigator: Dr. Clifford P. Rice\n3. Amount of Sponsored Funds: $65,971\n4. Starting Date: 1 July 1979\n5. Project completion date: 30 June 1980 (first year)\n6. Title: Atmospheric Transfer of Polynuclear Aromatic Hydrocarbons and PCBs to the Great Lakes\n7. Project Summary:\nThe purpose of this project is to describe the transfer of PCBs and PAHs at the air/water interface of the Great Lakes. Field sampling is being conducted to accurately measure their concentration and specific chemical makeup in this compartment. Special emphasis is being directed toward collecting the particulates in the samples so that the particulate associations of the PCBs and PAHs can be measured. Atmospheric fallout (rain, gaseous, and particulate) of PAHs and PCBs are also being measured in the field. Laboratory studies will be conducted using *C - labeled PAHs and PCBs to study the distillation/votalilization processes of these chemicals in a wind/wave tank system. A model will be developed which will allow prediction of the processes involved in the transfer of PCBs and PAHs at the air/water interface.\n8. Results and Findings to date:\nWe have completed analyses of our open lake atmospheric collections for PCBs and related residues. The average concentration of PCBs (Aroclor 1242 plus Aroglor 1254) for 8 Lake Michigan collections, Aug. 21 to Sept. 19 were 3.3 ng/m with the amount of A-1242 about 2.3 times higher than the A-1254 in the samples. Lake Superior was sampled in late October; the 3 samples averaged 0.15 ng/m with 2.8 times more A-1242 than A-1254. Other chlorinated hydrocar- bon residues were measured along with the PCBs; these included lindane, chlordane, dieldrin, Toxaphene, HCB and alpha-BHC. The overall average concentration of chlordane (cis plus trans isomer) was 0.17 ng/m for the 5 samples collected in Lake Michigan. 9.3% of the chlordane residues were retained on the prefilter in the collection system, however, none of the PCBs were found on the filters.\nAir and total fallout (rain plus dryfall) were collected from a fixed site on the southwestern shore of Lake Michigan. The samples were winter collections\n17\npage two - Progress Report/Rice\nwhich may account for their low values, e.g. air - 0.78 ng/m and rain - 3 49.0 ng/1.\nSurface micro-layer samples were collected with a metal screen sampler during August of 1979. The samples were filtered and separate PCB analyses carried out on the two fractions. The overall surface micro-layer concentra- tion of PCBs was 20.8 ng/1 for the 12 samples completed to date. The particu- late portion of these samples contained about 6 times more total PCB than the dissolved phase. The A-1242 to A-1254 ratio averaged 1:1. The concentration of PCBs on particulates in the subsurface water for this cruise averaged about 1 ng/1 therefore there is a significant enrichment of PCBs on the particles contained in the surface micro-layer.\nA framework for analyzing air/water mass transfer has been developed by reviewing the mechanisms of pollutant volatilization, dissolution and aero- solization. Preliminary relationships are being investigated to predict transfer rates in terms of pertinent properties of the pollutant and readily measurable indicators of environmental turbulence such as wind speed at 10 meters and air and water temperatures.\n18\nProject Report (February 1980)\n1. Organization: The University of Michigan Dept. of Environmental and Industrial Health School of Public Health Ann Arbor, Michigan 48109\n2. Principal Investigator: Milagros S. Simmons, Asst. Professor of Environmental Chemistry\n3. Amount of Sponsored Funds: $30,306\n4. Starting Date: 1 July 1979\n5. Project completion date: 30 June 1980 (first year)\n6. Title: Photochemical Degradation and Transformation Studies of Toxic Organics in the Great Lakes\n7. Project Summary:\nThe overall objective of this research proposal is to conduct studies on the photochemical degradation of toxic organics and to determine the role of this process in their transformation and fate in the Great Lakes. Poly -. nuclear aromatics (PNA) and polychlorinated biphenyls (PCB) will be irradiated under different UV sources (Fluorescent lamps, sunlamps, UV reactor, and natural sunlight). Variations in the experimental design will include studies of PNA and different pure isomers of PCB and the effects of suspended particles on their photodegradation rates. The photolysis rates of these compounds under different conditions will be calculated, their photolytic products will be identified by gas chromatography/mass spectrometry techniques, and estimates of their photolysis half-lives in natural waters will be determined.\n8. Results and Findings to date:\nExperimental set-ups for the fluorescent, sunlamp, and natural sunlight irradiations have been completed. A UV reactor system has been chosen and tested to carry out the degradation experiments. The methodology for the kinetic experiments and the identification of photolytic products have been established. Preliminary experiments using pure isomers of PCB in homogeneous systems have been conducted to evaluate the different UV irradiation set-ups. In this preliminary study, no significant. degradation of PCB isomers was observed when using the fluorescent light as the source of radiation compared to using the sunlamps and the UV reactor.\nExperiments using Arochlor 1254 (PCB) in water, irradiated under GE sunlamps were conducted. The results show that without stirring, disappearance with time of the higher isomers was more pronounced than that of the lower isomers. With stirring, the lower isomers disappeared at a fast rate. In both cases, a marked difference in the disappearance rate of the PCB in the light flask vs. the dark flask (wrapped in foil) was observed. The bulk of the remaining solution at the end of the experiments have been concentrated and submitted for GC-MS analysis of the photolytic products.\n19\nSubsequent photolysis experiments under sunlamp irradiation were con- ducted using 2,3,6,2',3',6' hexachlorobiphenyl (HCB) in water. Variation of temperature, light intensity (to simulate depth conditions in the lake) and the use of filtered and unfiltered Lake Michigan water are currently being investigated.\nExperiments using a photochemical reactor equipped with a 450-watt Hanovia immersion lamp, were also conducted. Variation in the rate of oxy- genation and the concentration level of the pure HCB isomer using distilled water were investigated. Likewise, photolysis experiments using the 2,3,6, 2',3',6' hexachlorobiphenyl in filtered and unfiltered Lake Michigan water have been conducted. Samples taken at time intervals are currenlty being analyzed by GC-EC and the concentrated samples of the remaining solution after each experiment (distilled water media only) have been submitted for GC-MS analysis of the photolytic products. A statistical analysis of the variation of these measurements have also been considered and included in these studies.\n20\n29 February, 1980\nBRIEF PROGRESS REPORT\n1. Organization: Dept. of Civil Engineering, Environmental and Water Resources Engineering Program 181 Engineering 1-A Building The University of Michigan Ann Arbor, Michigan 48109\n2. Principal Investigator: Walter J. Weber, Jr., Prof. of Environmental and Water Resources Engrg., and Chairman, University Program in Water Resources\n3. Amount: $37,017 (first year)\n4. Starting Date: 1 July, 1979\n5. Projected Completion Date: 30 June, 1980 (first year)\n6. Title: Particle Dynamics and Related Pollutant Transport in Tributary River-Lake Systems\n7. Summary : Development of a modeling framework for description and prediction of the transport of solids and solids- .associated pollutants from riverine to lacustrine systems. Particle dynamics -- including aggregation and settling phenomena -- transport, and differential accumulation in local shear planes will be described. Laboratory and field data will be collected for model calibration and verification.\n8. Results/Findings to. Date: Major findings to date on this project derive from the analysis of data obtained in the fall sampling survey on the Huron River. These data appear to reinforce earlier convictions regarding the role of flocculation in effecting particle growth, especially within the cohesive fraction of suspended solids and sediment materials. Since this fraction has been previously identified as the predominant vector in riverine to lacustrine transport of toxic substance, this finding puts us one step closer to the ultimate description of toxic pollutant transport in the Great Lakes Basin (GLB) .\nAn ever more important conclusion drawn from this effort, however, is the ability to describe both flocculant energy and degree of turbulent mixing with some relatively simple field measurements. These measurements which will be coupled with laboratory data to be derived this summer, will enable us to circumvent a problem that has consistently prevented the development of a generalized transport model.\n21\na total conservation approach is feasible. been missed in a larger system and convinced us that that they have identified forces which might have Our preliminary studies have been very valuable in and principles of conservation of momentum and mass. by studies which are solidly based upon the concepts and precepts. This task will only be brought about complete characterization of the controlling variables GLB will never be accomplished until there is a transport in the complex aquatic environment of the results is the realization that modeling of pollutant A corollary to the above mentioned\n22\nSummary of NOAA - LRERP subprogram. Six month progress report,\nOrganization:\nDepartment of Atmospheric and Oceanic Science The University of Michigan Ann Arbor, Michigan 48109\nPrincipal Investigators:\nProfessors Robert M. Owen, David K. Rea and Guy A. Meadows\nAmount and duration: $49,953.00 7/1/79 to 6/30/80\nTitle:\n\"A flux model for suspended particulates and associated chemical substances in large lakes.\"\nSummary of Project:\nWe intend to determine the physical and chemical nature, and spatial and temporal distribution of suspended particulates in our region of study. Combining this information with seasonal and annual synoptic current data, to be compiled by other research groups, will lead to an understanding of the tranpsort of the suspended materials and any toxic substances adsorbed onto them. To ascertain the long-term effects of anthropogenic compounds we will also study, in conjunction with GLERL, the materials now accumulating on the lake floor and compare them to both the present suspended materials and to the underlying, pre-settlement, sediments. Goals of the first year of the project are to: 1) establish operational shipboard and laboratory pro- cedures for sampling and analyzing suspended materials; 2) determine the geological and geochemical nature of both the suspended materials and the top few centimeters of bottom sediments; and 3) determine the various hydraulic parameters (concentration, size, type of particles) to establish calibration and correlation standards for existing and newly-constructed optical sensors.\nSignificant results/findings to date:\nThe Flux Model project which began August 1, 1979, has achieved several important goals as of February 29, 1980. The first year's field work was carried out on board the NOAA Ship Shenehon in August. We occupied six stations along a transect across Lake Michigan at approximately 43\u00b0N latitude. At each station transmissivity and temperature profiles were measured, and large-volume, 12 liters, water samples, surface sediment samples, and where possible, sediment core samples were taken. We encountered no undue diffi- culties with using our sampling gear off the Shenehon.\nAll samples were returned to our laboratories for analysis. We have established the necessary laboratory procedures and sample analysis is going smoothly. In the laboratory, one liter of each well-mixed, 12-liter sample was drawn off for use with the laser polar-nephelometer being de- signed and built by Dr. Meadows. The remaining lake water was filtered through 0.45u Millipore filters and the total concentration of suspended material determined. Concentrations range from 1.05 to 2.40 mg/1 with one unusually low value of 0.31 mg/1. A trans-lake profile of concentrations shows a maximum along the thermocline (1.74 to 2.40 mg/1), the clearest water at mid-depth (1.05 to 1.42 mg/1) and moderate concentrations (1.80 to 2.09 mg/1)\n23\nalong the bottom. This is the expected distribution of suspended material in a large stratified lake.\nAt the University of Michigan the Flux Model project is subdivided into three efforts: physical and optical limnology, chemical and geochemical limnology, and geological limnology. A major effort of this year's work in physical and optical limnology is to design, build, and test a laser polar nephelometer for determining the in-situ nature of the suspended particles. The design of this instrument is predicated upon the physics of electromagnetic, or Mie scattering of particles which are large in com- parison to the wavelength of the incident radiation. Previous studies of the Mie scattering characteristics of particles have indicated that an ensemble of randomly oriented, poly-dispersed particles scatter electromagnetic radiation in a manner similar to that of spheres of the mean radius of the distribution. Our nephelometer is designed to image the scattered radiation from a scattering volume of 1 mm3 which, for typical concentrations of suspended particulates in the Great Lakes, should contain about one hundred particles. The nephelometer will sense and record scattered light at 5.0 increments from 0\u00b0 to 180\u00ba around the scattering volume.\nConcurrent with the design and construction phase of the nephelometer, theoretical calculations of Mie scattering intensity have been completed. Numerical simulations of the interaction of incident radiation with spherical particles of various demensions and indices of refraction have been completed. These calculations are based on an index. of refraction of water to the particulates of 1.100 and particle radii of 1, 10, and 27 u, respectively. Through comparison of experimentally determined volume scattering functions from known Great Lake samples with theoretical distributions for the same size particles the nephelometer will be calibrated.\nAt present all design and machining of the nephelometer has been completed. Assembly of the components is approximately 50% complete. Theoretical Mie scattering distributions for the size ranges of suspended particulates from our Lake Michigan samples are approximately 80% complete. Calibration of the completed instrument is scheduled for early March, 1980 and analysis of test samples to begin in April, 1980.\nThe chemical and geochemical analyses conducted for this project include atomic-absorption spectrophotometry analyses of the lake water (filtrate) , suspended sediments (filtered residue), and bottom sediments. The filtrate was analyzed for Cr, Fe, Mn, Ca, K, Mg, and Na in all 34 samples and the available phase of these same elements, plus Ca, was determined in the residue. Surface and near-surface sediment samples have been analyzed for available phase elements, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn as well as for phosphorus, sulfide, and total organic carbon and inorganic carbon.\nAnalysis and interpretation of the chemical/geochemical data is still in progress. Thus far the following significant findings have been noted: 1) There is a significant depletion of Ca, Mg, Fe, and Mn and an enrichment of Cr in the suspended material relative to the surface sediments. This suggests dilution of carbonates by biogenic material in the suspended matter and mobilization of Fe, Mn, and Cr in the bottom sediments. 2) Concentrations of Mn in the particulate phase increase linearly with depth. This trend suggests scavenging of dissolved Mn in surface (< 45 m) and relatively rapid transport\n24\nof fine-grained, Mn-rich particles to subsurface waters. The increase in particulate Mn concentrations is more pronounced than that observed for Fe. As this trend is opposite that expected on the basis of the relative oxidation rates of these metals, it is probable that the removal of Mn from solution involves a phase (MnCO3?) other than oxides. 3) An inverse relationship exists between the Ca/Mg ratio of the suspended particulates and the dissolved Mg concentration. Moreover, Ca/Mg ratios of surface (< 45m) particulates are significantly higher than for those in deeper water. These data suggest either preferential removal of clay minerals by aggregates and/or formation of a MgCO3 phase on the surface of the carbonates.\nThe geological effort has concentrated on analyses of the physical nature of the suspended and bottom sediments. Materials recovered from suspension on the filters were inspected by scanning electron microscopy and by optical microscopy. These examinations show the suspended material in Lake Michigan to be dominated by diatioms (perhaps 70-90%) with lesser amounts of mineral grains. Not enough of the mineral component was recovered on the filters to allow x-ray diffraction techniques to be used for quantitative mineral determinations. We are planning to begin optical mineral identification . in March, 1980.\nThe lake-floor surface sediments we sampled fall into two categories, those presently accumulating and outcrops of Pleistocene glacial clays. Modern sediments are fine silts or silty clays (70 to 90 modal size) and have a mineralogy averaging 50% quartz, 22% dolomite, 10% calcite, 14% feld- spar, and 4% clay minerals. These sediments undergo a rapid reduction in porosity from 85% at the surface to 55% at a depth of 7 cm. At a sedimentation rate of 1 mm/y this corresponds to a dewatering rate of perhaps 50 g/cm -. y.\n:\n\u00b7 The relict, periglacial deposits were encountered at stations 3 and 4 on the mid-lake high. They are clay sized (90 to 100) with a sandy lag deposit on top. Mineralogy of the fine-grained fraction reveals about 85% quartz, 7% feldspar, 5% clay minerals, and 3% dolomite. Porosity remains constant throughout the top several cm of these sediments.\nPiston cores of the lake-floor sediment recovered at stations 1,2, and 5 have been opened, described, and sampled for geological and geochemical analysis. These downcore samples will provide evidence upon the history of fluctuations in the limnological and geochemical nature of Lake Michigan. Samples sent off for C-14 age dating should be analyzed by Arpil, 1980, and will allow us to determine the timing; and rates of events recorded in the sediments.\n25\nProject Report-February 1980 -\n1. Organization: Department of Atmospheric and Oceanic Science University of Michigan Ann Arbor, MI 48109\n2. Principal Investigator: Guy A. Meadows Nathan Hawley\n3. Amount of Sponsored Funds : $33,911\n4. Starting Date: October 1, 1979\n5. Project Completion Date: September 30, 1979\n6. Project Title: Modelling Particle Dynamics in the Great Lakes\n7. Project Summary :\nMany lake pollutants absorb on clay mineral particles suspended in the water column and are transported with these particles. In order to accurately predict the ultimate depositional site (s) of these pollutants, the transport and depositional behavior of the clay particles must be known. Because of their small size and high electric charge, the clay particles tend to a) remain in the water column for considerable lengths of time and b) form into large porous aggregates. The presence of these aggregates makes a prediction of transport depositional characteristics based on simple particle parameters, such as grain size and density, impossible. We are attempting to develop a one-dimensional numerical model of sediment aggregation and disaggregation in a non-uniform shear flow in order to better predict the transport and depositional behavior of these sediments.\n8. Results and Findings to Date:\n1) Examination of suspended particles by SEM reveals the presence of considerable numbers of aggregates, particularly near the bottom. in order to determine whether or not the particles behave as non-cohesive sediments (implying aggregation prior to reaching the lake) or as cohesive sediments (implying aggregation in the lake itself), an analysis of particle size distribution as a function of height above the bottom was performed. The results clearly indicate that the measured size distributions vary significantly from those predicted using a non-cohesive model. Many of the samples show a pattern that suggests aggregation within the bottom 2 meters, while other samples suggest disaggregation in this zone 2) An extensive literature review of particle aggregation and rupture has been completed. While the basic mechanisms of particle collision are well known, the efficiency of these collisions in producing larger particles is unclear, particularly in the present case, where the relative effects of hydrodynamic and electrical forces have not been accurately determined. Even less is known\n26\nabout the shear strength of the aggregates, which governs their susceptibility to rupture.\n3) We have developed a one-dimensional numerical model of particle dynamics including terms for particle aggregation and rupture. Preliminary results suggest that the efficiency of particle collisions in producing new particles is considerably less than 100%, and that the shear strength of the particles has been overestimated.\n27\nProgress Report February 1980\n1. Organization: Great Lakes Research Division The University of Michigan I. S. T. Bldg. Room 3114 2200 Bonisteel Blvd. Ann Arbor, Michigan 48109\n2. Principal Investigator: Dr. Clifford P. Rice\n3. Amount of Sponsored Funds: $32,800\n4. Starting Date: 1 July 1979\n5. Project completion date: 30 June 1980 (first year)\n6. Title: Sorption studies of Toxic Organics on Great Lakes Particulate Material\n7. Project Summary:\nThe objective of this project is to describe a range of partition coefficients for PAHs and PCBs for representative particulate materials found in Lake Michigan. Laboratory experimentation will be used to develop numerical formulations for partitioning of these materials as a function of measurable environmental variables.\n8. Results and Findings to date:\nNone. We have been delayed in not being able to identify a suitable individual to carry out this study. We are now planning to fill this position in May 1980.\n28\nPROGRESS REPORT\n(April 1980)\n1\n1. Organization: Great Lakes Environmental Research Laboratory National Oceanic and Atmospheric Administration 2300 Washtenaw Ave. Ann Arbor, Michigan 48104\n2. Principle Investigator: John R. Bennett\n3. Amount of Sponsored Funds: FY 1979- $13.5 K (OMPA); $5 K (GLERL) FY 1980- $44.0 K (OMPA); $14.4 K (GLERL)\n4. Starting Date: July 1, 1979\n5. Project Completion Date:\n6. Title: Modeling Particle Dynamics in the Great Lakes.\n7. Project Summary:\nThe purpose of this project is to develop mathematical models describing the transport of particles in the Great Lakes. This will be accomplished in three steps. First, a one-dimensional model describing the vertical distribu- tion of particles of various size classes will be developed and verified against field observations. Second, existing two- and three-dimensional mod- els of the currents and temperature distribution in lakes will be modified to predict sediment concentration also. Finally, the first two steps will be combined to give a model which can be used to simulate the fate of particles.\n8. Results and findings to date:\nIn collaboration with Nathan Hawley of the University of Michigan we have programmed a one-dimensional model which describes the effects of sinking, ver- tical diffusion, particle aggregation and particle rupture on the vertical pro- file of sediments. We are comparing the results with data collected by GLERL in Lake Michigan. We have also made progress in modifying the three-dimension- al model.\n29\nGLERL LIBRARY - Ann Arbor\n5 0778 01000188 1\nTD 427 .07 The cycling of toxic\nG7 organic substances in\nApr 80 the Great Lakes ecosystem.\nFirst semiannual progress report.\nDATE\nISSUED TO\nGLERL LIBRARY", "pages": [ { "pageNumber": 1, "angle": 0, "width": 8.5417, "height": 11.0833, "unit": "inch", "words": [ { "content": "TD", "polygon": [ 0.7026, 0.5532, 0.8815, 0.5484, 0.8842, 0.6493, 0.7026, 0.6542 ], "confidence": 0.994, "span": { "offset": 0, "length": 2 } }, { "content": "427", "polygon": [ 0.7074, 0.7023, 0.948, 0.7023, 0.948, 0.8226, 0.7074, 0.8226 ], "confidence": 0.998, "span": { "offset": 3, "length": 3 } }, { "content": ".07", "polygon": [ 0.717, 0.8659, 0.9531, 0.8659, 0.9531, 0.9765, 0.717, 0.9765 ], "confidence": 0.99, "span": { "offset": 7, "length": 3 } }, { "content": "G7", "polygon": [ 0.7122, 1.0102, 0.8745, 1.0102, 0.8729, 1.116, 0.7122, 1.1135 ], "confidence": 0.991, "span": { "offset": 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] }, { "content": "Organization:", "polygon": [ 1.6068, 1.6794, 2.7388, 1.6794, 2.7388, 1.8378, 1.6068, 1.8378 ], "spans": [ { "offset": 7606, "length": 13 } ] }, { "content": "Great Lakes Environmental Research Laboratory", "polygon": [ 2.9163, 1.689, 6.7679, 1.7034, 6.7679, 1.8522, 2.9163, 1.8282 ], "spans": [ { "offset": 7620, "length": 45 } ] }, { "content": "NOAA", "polygon": [ 2.9115, 1.8426, 3.276, 1.8522, 3.276, 2.0009, 2.9019, 2.0009 ], "spans": [ { "offset": 7666, "length": 4 } ] }, { "content": "2300 Washtenaw Avenue", "polygon": [ 2.9211, 2.0393, 4.715, 2.0393, 4.715, 2.1689, 2.9163, 2.1689 ], "spans": [ { "offset": 7671, "length": 21 } ] }, { "content": "Ann Arbor, Michigan", "polygon": [ 2.9067, 2.2073, 4.6766, 2.2121, 4.6766, 2.356, 2.9067, 2.3512 ], "spans": [ { "offset": 7693, "length": 19 } ] }, { "content": "48104", "polygon": [ 4.6862, 2.2073, 5.1467, 2.2121, 5.1467, 2.3464, 4.6862, 2.3464 ], "spans": [ { "offset": 7713, "length": 5 } ] }, { "content": "2.", "polygon": [ 1.2855, 2.548, 1.4342, 2.5528, 1.4294, 2.6727, 1.2759, 2.6679 ], "spans": [ { "offset": 7719, "length": 2 } ] }, { "content": "Principal Investigator:", "polygon": [ 1.6212, 2.5432, 3.5974, 2.5528, 3.5974, 2.7063, 1.6212, 2.6919 ], "spans": [ { "offset": 7722, "length": 23 } ] }, { "content": "Dr. Brian J. Eadie", "polygon": [ 3.7509, 2.5528, 5.3194, 2.5528, 5.3194, 2.6919, 3.7509, 2.6919 ], "spans": [ { "offset": 7746, "length": 18 } ] }, { "content": "3.", "polygon": [ 1.2855, 2.8886, 1.4438, 2.8934, 1.439, 3.0134, 1.2807, 3.0086 ], "spans": [ { "offset": 7765, "length": 2 } ] }, { "content": "Amount of Sponsored Funds :", "polygon": [ 1.6068, 2.8791, 3.9188, 2.8838, 3.9188, 3.0326, 1.6068, 3.0278 ], "spans": [ { "offset": 7768, "length": 27 } ] }, { "content": "FY 79 - OMPA $2.OK, GLERL $0.8K", "polygon": [ 4.0099, 2.8886, 6.6864, 2.8934, 6.6864, 3.0326, 4.0099, 3.0278 ], "spans": [ { "offset": 7796, "length": 31 } ] }, { "content": "FY 80 - OMPA $26.5K, GLERL $10.0K", "polygon": [ 4.0147, 3.0614, 6.8591, 3.0662, 6.8591, 3.2101, 4.0147, 3.2005 ], "spans": [ { "offset": 7828, "length": 33 } ] }, { "content": "4.", "polygon": [ 1.2855, 3.4021, 1.4342, 3.4069, 1.4342, 3.5268, 1.2759, 3.522 ], "spans": [ { "offset": 7862, "length": 2 } ] }, { "content": "Starting Date: 1 July 1979", "polygon": [ 1.6308, 3.3925, 3.9332, 3.3973, 3.9332, 3.5604, 1.6308, 3.5508 ], "spans": [ { "offset": 7865, "length": 26 } ] }, { "content": "5.", "polygon": [ 1.2615, 3.7284, 1.4342, 3.7332, 1.4342, 3.8867, 1.2519, 3.8867 ], "spans": [ { "offset": 7892, "length": 2 } ] }, { "content": "Project Completion Date: March, 1982", "polygon": [ 1.6164, 3.7428, 4.8014, 3.7476, 4.8014, 3.8915, 1.6164, 3.8867 ], "spans": [ { "offset": 7895, "length": 36 } ] }, { "content": "6.", "polygon": [ 1.2711, 4.0787, 1.439, 4.0835, 1.4342, 4.237, 1.2663, 4.2322 ], "spans": [ { "offset": 7932, "length": 2 } ] }, { "content": "Title :", "polygon": [ 1.6021, 4.0787, 2.2832, 4.0787, 2.2832, 4.2226, 1.6021, 4.2274 ], "spans": [ { "offset": 7935, "length": 7 } ] }, { "content": "Toxic Organic Modeling in the Great Lakes", "polygon": [ 2.2928, 4.0883, 5.8278, 4.0883, 5.8278, 4.2418, 2.2928, 4.2466 ], "spans": [ { "offset": 7943, "length": 41 } ] }, { "content": "7.", "polygon": [ 1.2615, 4.4145, 1.4342, 4.4289, 1.4342, 4.5777, 1.2519, 4.5729 ], "spans": [ { "offset": 7985, "length": 2 } ] }, { "content": "Project Summary:", "polygon": [ 1.6068, 4.4337, 2.9739, 4.4385, 2.9739, 4.5873, 1.6068, 4.5825 ], "spans": [ { "offset": 7988, "length": 16 } ] }, { "content": "This project is the essence of the overall program, in which our", "polygon": [ 1.5973, 4.7744, 7.0989, 4.7792, 7.0989, 4.9376, 1.5973, 4.9328 ], "spans": [ { "offset": 8005, "length": 64 } ] }, { "content": "objective is to develop a modeling hierarchy describing the cycling,", "polygon": [ 1.6021, 4.9472, 7.4203, 4.952, 7.4203, 5.1151, 1.6021, 5.1055 ], "spans": [ { "offset": 8070, "length": 68 } ] }, { "content": "transport and fate of toxic organic compounds. The limited", "polygon": [ 1.6116, 5.1199, 6.6816, 5.1199, 6.6816, 5.2783, 1.6116, 5.2735 ], "spans": [ { "offset": 8139, "length": 58 } ] }, { "content": "objectives of this project deal with the development of our first", "polygon": [ 1.6021, 5.2879, 7.1852, 5.2879, 7.1852, 5.4558, 1.6021, 5.451 ], "spans": [ { "offset": 8198, "length": 65 } ] }, { "content": "models, to calibrate and test these initial simulations and to use", "polygon": [ 1.5973, 5.4558, 7.2716, 5.4606, 7.2716, 5.6189, 1.5973, 5.6189 ], "spans": [ { "offset": 8264, "length": 66 } ] }, { "content": "them to further develop the research program. Initial models will be", "polygon": [ 1.6068, 5.6333, 7.521, 5.6333, 7.521, 5.8013, 1.6068, 5.7965 ], "spans": [ { "offset": 8331, "length": 68 } ] }, { "content": "adaptations of existing or currently developing toxic organic cycling", "polygon": [ 1.6021, 5.8061, 7.5258, 5.8109, 7.5258, 5.9788, 1.6021, 5.9644 ], "spans": [ { "offset": 8400, "length": 69 } ] }, { "content": "models based on a mass balance framework and known decomposition", "polygon": [ 1.5925, 5.974, 7.0989, 5.9788, 7.0941, 6.142, 1.5925, 6.1276 ], "spans": [ { "offset": 8470, "length": 64 } ] }, { "content": "pathways. More comprehensive cycling, transport and fate models will", "polygon": [ 1.5925, 6.1516, 7.521, 6.1468, 7.521, 6.3147, 1.5925, 6.3195 ], "spans": [ { "offset": 8535, "length": 68 } ] }, { "content": "be developed in subsequent projects within this program.", "polygon": [ 1.5925, 6.3147, 6.3938, 6.3195, 6.3938, 6.4923, 1.5925, 6.4827 ], "spans": [ { "offset": 8604, "length": 56 } ] }, { "content": "8.", "polygon": [ 1.2663, 6.6554, 1.4246, 6.6602, 1.4246, 6.8138, 1.2615, 6.8138 ], "spans": [ { "offset": 8661, "length": 2 } ] }, { "content": "Results and Findings to Date:", "polygon": [ 1.5877, 6.6506, 4.0963, 6.6554, 4.0915, 6.8234, 1.5877, 6.8138 ], "spans": [ { "offset": 8664, "length": 29 } ] }, { "content": "A hierarchy of three levels of models are currently being calibrated", "polygon": [ 1.5925, 7.0057, 7.4443, 7.0105, 7.4443, 7.164, 1.5925, 7.1592 ], "spans": [ { "offset": 8694, "length": 68 } ] }, { "content": "for the Great Lakes. The first of these is a simple lake scale two", "polygon": [ 1.5973, 7.1832, 7.3483, 7.1832, 7.3483, 7.3368, 1.5973, 7.332 ], "spans": [ { "offset": 8763, "length": 66 } ] }, { "content": "dimensional transport model, incorporating a first order term for", "polygon": [ 1.5973, 7.3512, 7.1756, 7.3512, 7.1756, 7.5095, 1.5973, 7.5095 ], "spans": [ { "offset": 8830, "length": 65 } ] }, { "content": "removal of contaminants to the sediments. This model was successfully", "polygon": [ 1.5973, 7.5191, 7.6073, 7.5191, 7.6073, 7.6775, 1.5973, 7.6727 ], "spans": [ { "offset": 8896, "length": 69 } ] }, { "content": "used by Pickett and Dossett (1979) to describe the transport and fate", "polygon": [ 1.5829, 7.6871, 7.5258, 7.6871, 7.5258, 7.8502, 1.5829, 7.8454 ], "spans": [ { "offset": 8966, "length": 69 } ] }, { "content": "of Mirex in Lake Ontario. If PCB and PAH distribution can be simulated", "polygon": [ 1.6021, 7.8598, 7.6985, 7.8598, 7.6985, 8.0182, 1.6021, 8.023 ], "spans": [ { "offset": 9036, "length": 70 } ] }, { "content": "by this simple approximation, then internal cycling processes are not", "polygon": [ 1.5829, 8.0373, 7.521, 8.0373, 7.521, 8.2053, 1.5829, 8.2053 ], "spans": [ { "offset": 9107, "length": 69 } ] }, { "content": "important to the prediction of fate. 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A figure", "polygon": [ 1.6405, 2.0201, 7.1953, 2.0441, 7.1953, 2.2121, 1.6405, 2.1833 ], "spans": [ { "offset": 9817, "length": 64 } ] }, { "content": "conceptualizing this framework is included.", "polygon": [ 1.6405, 2.1977, 5.3101, 2.1977, 5.3101, 2.356, 1.6405, 2.356 ], "spans": [ { "offset": 9882, "length": 43 } ] }, { "content": "To date, the first and second of these models have been obtained", "polygon": [ 1.6165, 2.5288, 7.1137, 2.5528, 7.1137, 2.7111, 1.6165, 2.6871 ], "spans": [ { "offset": 9926, "length": 64 } ] }, { "content": "and initial runs performed. Calibration for the Great Lakes and", "polygon": [ 1.6357, 2.7015, 7.1137, 2.7207, 7.1137, 2.8743, 1.6357, 2.8599 ], "spans": [ { "offset": 9991, "length": 63 } ] }, { "content": "compounds of interest will take several months. 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}, { "content": "in", "polygon": [ 4.6873, 7.6093, 4.8418, 7.6094, 4.8383, 7.7659, 4.6839, 7.7653 ], "confidence": 0.995, "span": { "offset": 15942, "length": 2 } }, { "content": "Lake", "polygon": [ 4.9423, 7.6095, 5.2669, 7.61, 5.2628, 7.7678, 4.9386, 7.7663 ], "confidence": 0.992, "span": { "offset": 15945, "length": 4 } }, { "content": "Erie,", "polygon": [ 5.3622, 7.6101, 5.7666, 7.611, 5.762, 7.7706, 5.358, 7.7682 ], "confidence": 0.992, "span": { "offset": 15950, "length": 5 } }, { "content": "Huron,", "polygon": [ 5.8722, 7.6112, 6.3642, 7.6126, 6.359, 7.7746, 5.8675, 7.7713 ], "confidence": 0.995, "span": { "offset": 15956, "length": 6 } }, { "content": "Michigan", "polygon": [ 6.4646, 7.613, 7.1678, 7.6159, 7.1618, 7.7819, 6.4593, 7.7756 ], "confidence": 0.995, "span": { "offset": 15963, "length": 8 } }, { "content": "and", "polygon": [ 1.5791, 7.7807, 1.8409, 7.783, 1.8418, 7.9401, 1.5821, 7.9388 ], "confidence": 0.997, "span": { "offset": 15972, "length": 3 } }, { "content": "Superior.", "polygon": [ 1.9368, 7.7834, 2.6976, 7.7751, 2.6927, 7.9361, 1.9369, 7.9403 ], "confidence": 0.994, "span": { "offset": 15976, "length": 9 } }, { "content": "A", "polygon": [ 1.575, 8.116, 1.6808, 8.1165, 1.6808, 8.286, 1.575, 8.286 ], "confidence": 0.994, "span": { "offset": 15986, "length": 1 } }, { "content": "summary", "polygon": [ 1.7644, 8.1168, 2.3669, 8.1194, 2.3669, 8.2792, 1.7644, 8.2855 ], "confidence": 0.994, "span": { "offset": 15988, "length": 7 } }, { "content": "of", "polygon": [ 2.4554, 8.1198, 2.6202, 8.1204, 2.6202, 8.2774, 2.4554, 8.2786 ], "confidence": 0.997, "span": { "offset": 15996, "length": 2 } }, { "content": "the", "polygon": [ 2.7112, 8.1208, 2.9571, 8.1218, 2.9571, 8.2749, 2.7112, 8.2767 ], "confidence": 0.998, "span": { "offset": 15999, "length": 3 } }, { "content": "initial", "polygon": [ 3.0579, 8.1222, 3.6383, 8.1242, 3.6383, 8.2714, 3.0579, 8.2742 ], "confidence": 0.994, "span": { "offset": 16003, "length": 7 } }, { "content": "results", "polygon": [ 3.7392, 8.1246, 4.3245, 8.1265, 4.3245, 8.2697, 3.7392, 8.271 ], "confidence": 0.995, "span": { "offset": 16011, "length": 7 } }, { "content": "from", "polygon": [ 4.4204, 8.1268, 4.7597, 8.1278, 4.7597, 8.2693, 4.4204, 8.2696 ], "confidence": 0.992, "span": { "offset": 16019, "length": 4 } }, { "content": "Western", "polygon": [ 4.8434, 8.1281, 5.436, 8.1297, 5.436, 8.2706, 4.8434, 8.2695 ], "confidence": 0.995, "span": { "offset": 16024, "length": 7 } }, { "content": "Lake", "polygon": [ 5.5369, 8.1299, 5.859, 8.1307, 5.859, 8.2725, 5.5369, 8.271 ], "confidence": 0.995, "span": { "offset": 16032, "length": 4 } }, { "content": "Erie", "polygon": [ 5.9574, 8.1309, 6.2845, 8.1317, 6.2845, 8.2747, 5.9574, 8.273 ], "confidence": 0.992, "span": { "offset": 16037, "length": 4 } }, { "content": "follows:", "polygon": [ 6.3878, 8.1319, 7.053, 8.1333, 7.053, 8.2809, 6.3878, 8.2756 ], "confidence": 0.977, "span": { "offset": 16042, "length": 8 } }, { "content": "13", "polygon": [ 4.389, 10.5528, 4.5614, 10.5528, 4.5614, 10.6701, 4.389, 10.6726 ], "confidence": 0.999, "span": { "offset": 16051, "length": 2 } } ], "lines": [ { "content": "Samples of sediment from deposition zones in Lakes Erie,", "polygon": [ 2.2999, 1.2412, 7.0817, 1.2652, 7.0817, 1.4233, 2.2999, 1.3994 ], "spans": [ { "offset": 14309, "length": 56 } ] }, { "content": "Huron and Michigan will be collected and analyzed.", "polygon": [ 2.2903, 1.4185, 6.5643, 1.4377, 6.5643, 1.5911, 2.2903, 1.5623 ], "spans": [ { "offset": 14366, "length": 50 } ] }, { "content": "Sediments from Lake Superior will be supplied by Dr.", "polygon": [ 2.2999, 1.5863, 6.7368, 1.615, 6.732, 1.7684, 2.2999, 1.7348 ], "spans": [ { "offset": 14417, "length": 52 } ] }, { "content": "Steve Eisenreich of Minnesota. These will be combined", "polygon": [ 2.2999, 1.7588, 6.9332, 1.7828, 6.9284, 1.9265, 2.2951, 1.8978 ], "spans": [ { "offset": 14470, "length": 53 } ] }, { "content": "with existing analyses of Lake Ontario sediments to", "polygon": [ 2.2903, 1.9313, 6.6649, 1.9457, 6.6649, 2.0991, 2.2903, 2.0847 ], "spans": [ { "offset": 14524, "length": 51 } ] }, { "content": "produce a first order map.", "polygon": [ 2.2855, 2.1087, 4.5039, 2.1134, 4.5039, 2.2764, 2.2855, 2.262 ], "spans": [ { "offset": 14576, "length": 26 } ] }, { "content": ". Atmospheric loading of PAH to Lake Michigan;", "polygon": [ 1.6147, 2.4441, 5.6156, 2.4537, 5.6108, 2.631, 1.6147, 2.6166 ], "spans": [ { "offset": 14603, "length": 46 } ] }, { "content": "Atmospheric particulates will be collected aboard the RV", "polygon": [ 2.2855, 2.7988, 7.0913, 2.7988, 7.0913, 2.9617, 2.2855, 2.9569 ], "spans": [ { "offset": 14650, "length": 56 } ] }, { "content": "SHENEHON, by U of M investigators aboard their vessels", "polygon": [ 2.2951, 2.9617, 6.9092, 2.9761, 6.9092, 3.1246, 2.2951, 3.1151 ], "spans": [ { "offset": 14707, "length": 54 } ] }, { "content": "and at selected land sites.", "polygon": [ 2.2807, 3.1342, 4.6429, 3.1342, 4.6429, 3.2972, 2.2807, 3.2924 ], "spans": [ { "offset": 14762, "length": 27 } ] }, { "content": "These will be shared and", "polygon": [ 4.7052, 3.1486, 6.823, 3.1486, 6.823, 3.2972, 4.7052, 3.2924 ], "spans": [ { "offset": 14790, "length": 24 } ] }, { "content": "analyzed for PAH and PCB.", "polygon": [ 2.2855, 3.3067, 4.4129, 3.3067, 4.4129, 3.4505, 2.2855, 3.4505 ], "spans": [ { "offset": 14815, "length": 25 } ] }, { "content": ".", "polygon": [ 1.6051, 3.6374, 1.7968, 3.6422, 1.7968, 3.8052, 1.6051, 3.8052 ], "spans": [ { "offset": 14841, "length": 1 } ] }, { "content": "Partitioning of PAH among selected compartments of the lake", "polygon": [ 1.8351, 3.6326, 6.9092, 3.647, 6.9092, 3.8195, 1.8303, 3.8052 ], "spans": [ { "offset": 14843, "length": 59 } ] }, { "content": "ecosystem;", "polygon": [ 1.8495, 3.8387, 2.6976, 3.8435, 2.6976, 3.9729, 1.8495, 3.9729 ], "spans": [ { "offset": 14903, "length": 10 } ] }, { "content": "Samples of plankton, benthic organisms, fish and particulate", "polygon": [ 2.2855, 4.1598, 7.4219, 4.1694, 7.4219, 4.3419, 2.2855, 4.3227 ], "spans": [ { "offset": 14914, "length": 60 } ] }, { "content": "matter will be analyzed.", "polygon": [ 2.2711, 4.3323, 4.3219, 4.3371, 4.3219, 4.4905, 2.2711, 4.4809 ], "spans": [ { "offset": 14975, "length": 24 } ] }, { "content": ";", "polygon": [ 7.8148, 4.3467, 7.8579, 4.3515, 7.8532, 4.4138, 7.81, 4.409 ], "spans": [ { "offset": 15000, "length": 1 } ] }, { "content": "8.", "polygon": [ 1.2554, 4.6822, 1.4087, 4.687, 1.4039, 4.8068, 1.2554, 4.802 ], "spans": [ { "offset": 15002, "length": 2 } ] }, { "content": "Results and Findings to Date:", "polygon": [ 1.5908, 4.6726, 4.0679, 4.6822, 4.0679, 4.8355, 1.5908, 4.8164 ], "spans": [ { "offset": 15005, "length": 29 } ] }, { "content": "Thus far we have set up and evaluated 2 extraction techniques which", "polygon": [ 1.5908, 5.008, 7.3357, 5.032, 7.3357, 5.1902, 1.5908, 5.1662 ], "spans": [ { "offset": 15035, "length": 67 } ] }, { "content": "give us satisfactory yields. We are currently using a methelyene", "polygon": [ 1.586, 5.1902, 7.1584, 5.2045, 7.1536, 5.3675, 1.586, 5.3483 ], "spans": [ { "offset": 15103, "length": 64 } ] }, { "content": "chloride soxhelet extraction followed by clean up on Sepehadex LH 20.", "polygon": [ 1.586, 5.3531, 7.4746, 5.3723, 7.4746, 5.5352, 1.586, 5.5112 ], "spans": [ { "offset": 15168, "length": 69 } ] }, { "content": "Our samples are spiked with C-14 labelled benzo-a-pyrene and yields", "polygon": [ 1.5812, 5.5304, 7.3309, 5.5448, 7.3309, 5.7125, 1.5812, 5.6934 ], "spans": [ { "offset": 15238, "length": 67 } ] }, { "content": "are calculated based on the measured extract. Another, simpler", "polygon": [ 1.586, 5.7029, 6.9955, 5.7173, 6.9955, 5.8851, 1.586, 5.8611 ], "spans": [ { "offset": 15306, "length": 62 } ] }, { "content": "clean up procedure is currently being evaluated which employs a", "polygon": [ 1.5908, 5.8803, 6.9859, 5.8851, 6.9859, 6.0576, 1.5908, 6.0432 ], "spans": [ { "offset": 15369, "length": 63 } ] }, { "content": "molecular size fractionation on a Waters micro particil column.", "polygon": [ 1.5716, 6.0528, 6.962, 6.0624, 6.962, 6.2253, 1.5716, 6.2014 ], "spans": [ { "offset": 15433, "length": 63 } ] }, { "content": "The PAH compounds are being successfully analyzed by both glass", "polygon": [ 1.5812, 6.3883, 6.9811, 6.4026, 6.9811, 6.5704, 1.5812, 6.5512 ], "spans": [ { "offset": 15497, "length": 63 } ] }, { "content": "capillary gas chromatography, which yields good results for the lower", "polygon": [ 1.586, 6.5656, 7.5034, 6.5752, 7.5034, 6.7381, 1.586, 6.7285 ], "spans": [ { "offset": 15561, "length": 69 } ] }, { "content": "molecular weight compounds and on high performance liquid chromatography", "polygon": [ 1.5716, 6.7381, 7.7477, 6.7477, 7.7477, 6.9154, 1.5716, 6.8962 ], "spans": [ { "offset": 15631, "length": 72 } ] }, { "content": "which yields best results with the high molecular weight analogs.", "polygon": [ 1.5764, 6.9106, 7.1344, 6.9202, 7.1344, 7.0927, 1.5764, 7.0688 ], "spans": [ { "offset": 15704, "length": 65 } ] }, { "content": "Technique development and evaluation have been our major effort.", "polygon": [ 1.5764, 7.0832, 7.0482, 7.0879, 7.0482, 7.2557, 1.5764, 7.2509 ], "spans": [ { "offset": 15770, "length": 64 } ] }, { "content": "During the past field season, sediments, lake ecosystem and atmospheric", "polygon": [ 1.5764, 7.4234, 7.5753, 7.4378, 7.5753, 7.6055, 1.5764, 7.5911 ], "spans": [ { "offset": 15835, "length": 71 } ] }, { "content": "particulate samples were collected in Lake Erie, Huron, Michigan", "polygon": [ 1.5716, 7.6055, 7.1632, 7.6103, 7.1632, 7.778, 1.5716, 7.7685 ], "spans": [ { "offset": 15907, "length": 64 } ] }, { "content": "and Superior.", "polygon": [ 1.5764, 7.778, 2.6928, 7.7733, 2.6928, 7.9314, 1.5764, 7.9362 ], "spans": [ { "offset": 15972, "length": 13 } ] }, { "content": "A summary of the initial results from Western Lake Erie follows:", "polygon": [ 1.5716, 8.1135, 7.0482, 8.1183, 7.0482, 8.286, 1.5716, 8.2812 ], "spans": [ { "offset": 15986, "length": 64 } ] }, { "content": "13", "polygon": [ 4.389, 10.5528, 4.5567, 10.5528, 4.5519, 10.6679, 4.389, 10.6727 ], "spans": [ { "offset": 16051, "length": 2 } ] } ], "spans": [ { "offset": 14309, "length": 1744 } ] }, { "pageNumber": 16, "angle": 0, "width": 11.0417, "height": 8.5, "unit": "inch", "words": [ { "content": "CONCENTRATION", "polygon": [ 3.736, 0.4681, 4.8316, 0.4707, 4.8273, 0.6264, 3.7317, 0.6244 ], "confidence": 0.992, "span": { "offset": 16054, "length": 13 } }, { "content": "OF", "polygon": [ 4.9231, 0.4709, 5.0909, 0.4712, 5.0866, 0.6268, 4.9189, 0.6266 ], "confidence": 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Rice", "polygon": [ 3.4211, 2.7412, 5.1843, 2.746, 5.1843, 2.8754, 3.4211, 2.8706 ], "spans": [ { "offset": 19676, "length": 20 } ] }, { "content": "3.", "polygon": [ 0.9822, 3.0719, 1.1452, 3.0767, 1.1452, 3.1965, 0.9775, 3.1965 ], "spans": [ { "offset": 19697, "length": 2 } ] }, { "content": "Amount of Sponsored Funds:", "polygon": [ 1.3176, 3.0767, 3.56, 3.0815, 3.5552, 3.2205, 1.3176, 3.2109 ], "spans": [ { "offset": 19700, "length": 26 } ] }, { "content": "$65,971", "polygon": [ 3.6942, 3.0767, 4.3171, 3.0767, 4.3171, 3.2301, 3.6942, 3.2301 ], "spans": [ { "offset": 19727, "length": 7 } ] }, { "content": "4.", "polygon": [ 0.9775, 3.417, 1.1595, 3.4218, 1.1499, 3.5368, 0.9775, 3.5368 ], "spans": [ { "offset": 19735, "length": 2 } ] }, { "content": "Starting Date:", "polygon": [ 1.3224, 3.4122, 2.6592, 3.4122, 2.6592, 3.5703, 1.3224, 3.5655 ], "spans": [ { "offset": 19738, "length": 14 } ] }, { "content": "1 July 1979", "polygon": [ 2.6688, 3.4218, 3.6415, 3.4266, 3.6415, 3.5703, 2.6688, 3.5703 ], "spans": [ { "offset": 19753, "length": 11 } ] }, { "content": "5.", "polygon": [ 0.9822, 3.7572, 1.1356, 3.762, 1.1356, 3.8866, 0.9775, 3.8818 ], "spans": [ { "offset": 19765, "length": 2 } ] }, { "content": "Project completion date:", "polygon": [ 1.3033, 3.762, 3.3828, 3.7668, 3.378, 3.9106, 1.3033, 3.901 ], "spans": [ { "offset": 19768, "length": 24 } ] }, { "content": "30 June 1980 (first year)", "polygon": [ 3.5217, 3.7668, 5.6778, 3.7668, 5.6731, 3.9393, 3.5217, 3.9202 ], "spans": [ { "offset": 19793, "length": 25 } ] }, { "content": "6.", "polygon": [ 0.9775, 4.1023, 1.1452, 4.1023, 1.1404, 4.2221, 0.9727, 4.2221 ], "spans": [ { "offset": 19819, "length": 2 } ] }, { "content": "Title:", "polygon": [ 1.3081, 4.0831, 1.8591, 4.0927, 1.8543, 4.2556, 1.3033, 4.2461 ], "spans": [ { "offset": 19822, "length": 6 } ] }, { "content": "Atmospheric Transfer of Polynuclear Aromatic Hydrocarbons", "polygon": [ 1.9837, 4.1071, 6.8853, 4.1215, 6.8805, 4.2796, 1.9837, 4.2556 ], "spans": [ { "offset": 19829, "length": 57 } ] }, { "content": "and PCBs to the Great Lakes", "polygon": [ 1.9932, 4.2748, 4.3219, 4.2844, 4.3171, 4.4234, 1.9932, 4.4138 ], "spans": [ { "offset": 19887, "length": 27 } ] }, { "content": "7.", "polygon": [ 0.9727, 4.6151, 1.1547, 4.6199, 1.1499, 4.7493, 0.9679, 4.7445 ], "spans": [ { "offset": 19915, "length": 2 } ] }, { "content": "Project Summary:", "polygon": [ 1.2937, 4.6103, 2.6592, 4.6199, 2.6592, 4.7876, 1.2937, 4.7732 ], "spans": [ { "offset": 19918, "length": 16 } ] }, { "content": "The purpose of this project is to describe the transfer of PCBs and", "polygon": [ 1.7249, 4.9649, 7.4746, 4.9793, 7.4746, 5.1326, 1.7249, 5.1135 ], "spans": [ { "offset": 19935, "length": 67 } ] }, { "content": "PAHs at the air/water interface of the Great Lakes. Field sampling is", "polygon": [ 1.2985, 5.1326, 7.3069, 5.1566, 7.3069, 5.3148, 1.2985, 5.2812 ], "spans": [ { "offset": 20003, "length": 69 } ] }, { "content": "being conducted to accurately measure their concentration and specific", "polygon": [ 1.3081, 5.3052, 7.3069, 5.3291, 7.3069, 5.4825, 1.3033, 5.4537 ], "spans": [ { "offset": 20073, "length": 70 } ] }, { "content": "chemical makeup in this compartment. Special emphasis is being directed", "polygon": [ 1.3033, 5.4729, 7.4698, 5.4969, 7.4698, 5.655, 1.3033, 5.6311 ], "spans": [ { "offset": 20144, "length": 71 } ] }, { "content": "toward collecting the particulates in the samples so that the particulate", "polygon": [ 1.3176, 5.6502, 7.5609, 5.6742, 7.5609, 5.8275, 1.3176, 5.7988 ], "spans": [ { "offset": 20216, "length": 73 } ] }, { "content": "associations of the PCBs and PAHs can be measured. 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A model will be developed which will", "polygon": [ 1.3081, 6.5177, 7.7142, 6.532, 7.7142, 6.6854, 1.3081, 6.6614 ], "spans": [ { "offset": 20579, "length": 74 } ] }, { "content": "allow prediction of the processes involved in the transfer of PCBs and PAHs", "polygon": [ 1.3081, 6.6902, 7.7238, 6.6998, 7.719, 6.8531, 1.3081, 6.8387 ], "spans": [ { "offset": 20654, "length": 75 } ] }, { "content": "at the air/water interface.", "polygon": [ 1.2985, 6.8579, 3.6175, 6.8579, 3.6175, 7.0065, 1.2985, 7.0017 ], "spans": [ { "offset": 20730, "length": 27 } ] }, { "content": "8.", "polygon": [ 0.9679, 7.2078, 1.2506, 7.203, 1.2506, 7.3371, 0.9631, 7.3324 ], "spans": [ { "offset": 20758, "length": 2 } ] }, { "content": "Results and Findings to date:", "polygon": [ 1.2697, 7.2078, 3.7852, 7.2125, 3.7804, 7.3611, 1.2697, 7.3467 ], "spans": [ { "offset": 20761, "length": 29 } ] }, { "content": "We have completed analyses of our open lake atmospheric collections for", "polygon": [ 1.7249, 7.5528, 7.81, 7.5624, 7.81, 7.7205, 1.7249, 7.7062 ], "spans": [ { "offset": 20791, "length": 71 } ] }, { "content": "PCBs and related residues. 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Professor of Environmental", "polygon": [ 0.9918, 2.0032, 7.695, 2.0416, 7.695, 2.1997, 0.9918, 2.1614 ], "spans": [ { "offset": 23154, "length": 77 } ] }, { "content": "Chemistry", "polygon": [ 3.6846, 2.1949, 4.4656, 2.1997, 4.4656, 2.3579, 3.6846, 2.3579 ], "spans": [ { "offset": 23232, "length": 9 } ] }, { "content": "3.", "polygon": [ 0.6852, 2.5208, 0.8625, 2.5208, 0.8577, 2.655, 0.6804, 2.6502 ], "spans": [ { "offset": 23242, "length": 2 } ] }, { "content": "Amount of Sponsored Funds:", "polygon": [ 1.0158, 2.516, 3.2678, 2.5256, 3.2678, 2.6837, 1.0158, 2.6694 ], "spans": [ { "offset": 23245, "length": 26 } ] }, { "content": "$30,306", "polygon": [ 3.4355, 2.5304, 4.0392, 2.5352, 4.0392, 2.6885, 3.4307, 2.6837 ], "spans": [ { "offset": 23272, "length": 7 } ] }, { "content": "4.", "polygon": [ 0.6756, 2.8658, 0.8481, 2.8706, 0.8385, 2.9952, 0.6756, 2.9905 ], "spans": [ { "offset": 23280, "length": 2 } ] }, { "content": "Starting Date: 1 July 1979", "polygon": [ 1.0206, 2.8563, 3.3636, 2.8611, 3.3588, 3.0336, 1.0206, 3.024 ], "spans": [ { "offset": 23283, "length": 26 } ] }, { "content": "5.", "polygon": [ 0.6708, 3.2109, 0.8529, 3.2109, 0.8481, 3.3451, 0.666, 3.3403 ], "spans": [ { "offset": 23310, "length": 2 } ] }, { "content": "Project completion date: 30 June 1980 (first year)", "polygon": [ 1.0254, 3.2061, 5.3952, 3.2205, 5.3904, 3.393, 1.0206, 3.3691 ], "spans": [ { "offset": 23313, "length": 50 } ] }, { "content": "6.", "polygon": [ 0.6756, 3.556, 0.8385, 3.556, 0.8337, 3.6806, 0.6756, 3.6853 ], "spans": [ { "offset": 23364, "length": 2 } ] }, { "content": "Title:", "polygon": [ 0.987, 3.5512, 1.5955, 3.5512, 1.5955, 3.6901, 0.987, 3.6901 ], "spans": [ { "offset": 23367, "length": 6 } ] }, { "content": "Photochemical Degradation and Transformation Studies of Toxic", "polygon": [ 1.6962, 3.556, 6.9332, 3.5799, 6.9332, 3.7333, 1.6962, 3.7045 ], "spans": [ { "offset": 23374, "length": 61 } ] }, { "content": "Organics in the Great Lakes", "polygon": [ 1.701, 3.7285, 4.0248, 3.7333, 4.0248, 3.8818, 1.701, 3.8818 ], "spans": [ { "offset": 23436, "length": 27 } ] }, { "content": "7.", "polygon": [ 0.6708, 4.0639, 0.8385, 4.0687, 0.8385, 4.1981, 0.6708, 4.1981 ], "spans": [ { "offset": 23464, "length": 2 } ] }, { "content": "Project Summary:", "polygon": [ 1.0014, 4.0592, 2.3813, 4.0687, 2.3766, 4.2365, 1.0014, 4.2221 ], "spans": [ { "offset": 23467, "length": 16 } ] }, { "content": "The overall objective of this research proposal is to conduct studies", "polygon": [ 1.4326, 4.4042, 7.3501, 4.433, 7.3501, 4.5863, 1.4326, 4.5624 ], "spans": [ { "offset": 23484, "length": 69 } ] }, { "content": "on the photochemical degradation of toxic organics and to determine the role", "polygon": [ 1.0062, 4.5815, 7.5273, 4.5959, 7.5273, 4.7588, 1.0014, 4.7397 ], "spans": [ { "offset": 23554, "length": 76 } ] }, { "content": "of this process in their transformation and fate in the Great Lakes. Poly -.", "polygon": [ 1.011, 4.7541, 7.489, 4.7732, 7.489, 4.941, 1.011, 4.9074 ], "spans": [ { "offset": 23631, "length": 76 } ] }, { "content": "nuclear aromatics (PNA) and polychlorinated biphenyls (PCB) will be irradiated", "polygon": [ 0.9966, 4.9266, 7.7765, 4.9457, 7.7765, 5.1087, 0.9966, 5.0847 ], "spans": [ { "offset": 23708, "length": 78 } ] }, { "content": "under different UV sources (Fluorescent lamps, sunlamps, UV reactor, and", "polygon": [ 1.0014, 5.0895, 7.1919, 5.1279, 7.1919, 5.2812, 1.0014, 5.2477 ], "spans": [ { "offset": 23787, "length": 72 } ] }, { "content": "natural sunlight). Variations in the experimental design will include", "polygon": [ 0.9918, 5.2668, 7.0147, 5.286, 7.0147, 5.4537, 0.9918, 5.425 ], "spans": [ { "offset": 23860, "length": 69 } ] }, { "content": "studies of PNA and different pure isomers of PCB and the effects of suspended", "polygon": [ 0.9966, 5.4346, 7.6136, 5.4681, 7.6088, 5.6359, 0.9966, 5.5927 ], "spans": [ { "offset": 23930, "length": 77 } ] }, { "content": "particles on their photodegradation rates. The photolysis rates of these", "polygon": [ 0.9918, 5.6167, 7.2782, 5.6311, 7.2782, 5.7988, 0.9918, 5.7748 ], "spans": [ { "offset": 24008, "length": 72 } ] }, { "content": "compounds under different conditions will be calculated, their photolytic", "polygon": [ 1.0014, 5.7844, 7.259, 5.8036, 7.259, 5.9761, 1.0014, 5.9474 ], "spans": [ { "offset": 24081, "length": 73 } ] }, { "content": "products will be identified by gas chromatography/mass spectrometry techniques,", "polygon": [ 0.9918, 5.9569, 7.7621, 5.9857, 7.7621, 6.1534, 0.9918, 6.1151 ], "spans": [ { "offset": 24155, "length": 79 } ] }, { "content": "and estimates of their photolysis half-lives in natural waters will be determined.", "polygon": [ 0.9918, 6.1295, 8.0065, 6.1534, 8.0065, 6.3116, 0.9918, 6.2828 ], "spans": [ { "offset": 24235, "length": 82 } ] }, { "content": "8.", "polygon": [ 0.6612, 6.4745, 0.8193, 6.4697, 0.8193, 6.5943, 0.6612, 6.5943 ], "spans": [ { "offset": 24318, "length": 2 } ] }, { "content": "Results and Findings to date:", "polygon": [ 0.987, 6.4649, 3.5025, 6.4697, 3.5025, 6.6327, 0.987, 6.6183 ], "spans": [ { "offset": 24321, "length": 29 } ] }, { "content": "Experimental set-ups for the fluorescent, sunlamp, and natural sunlight", "polygon": [ 1.4326, 6.8148, 7.5992, 6.8339, 7.5944, 7.0017, 1.4326, 6.9729 ], "spans": [ { "offset": 24351, "length": 71 } ] }, { "content": "irradiations have been completed. A UV reactor system has been chosen and", "polygon": [ 1.0014, 6.9777, 7.3453, 7.0113, 7.3453, 7.1694, 1.0014, 7.1407 ], "spans": [ { "offset": 24423, "length": 73 } ] }, { "content": "tested to carry out the degradation experiments. The methodology for the", "polygon": [ 1.0014, 7.1598, 7.2638, 7.179, 7.2638, 7.3419, 1.0014, 7.3132 ], "spans": [ { "offset": 24497, "length": 72 } ] }, { "content": "kinetic experiments and the identification of photolytic products have been", "polygon": [ 0.9918, 7.3276, 7.4315, 7.3467, 7.4315, 7.5145, 0.9918, 7.4905 ], "spans": [ { "offset": 24570, "length": 75 } ] }, { "content": "established. Preliminary experiments using pure isomers of PCB in homogeneous", "polygon": [ 0.9966, 7.5049, 7.6759, 7.5241, 7.6759, 7.687, 0.9966, 7.6582 ], "spans": [ { "offset": 24646, "length": 77 } ] }, { "content": "systems have been conducted to evaluate the different UV irradiation set-ups.", "polygon": [ 0.9918, 7.6774, 7.58, 7.6918, 7.58, 7.8595, 0.9918, 7.8356 ], "spans": [ { "offset": 24724, "length": 77 } ] }, { "content": "In this preliminary study, no significant. degradation of PCB isomers was", "polygon": [ 0.9966, 7.8499, 7.1824, 7.8595, 7.1824, 8.0273, 0.9966, 8.0129 ], "spans": [ { "offset": 24802, "length": 73 } ] }, { "content": "observed when using the fluorescent light as the source of radiation compared", "polygon": [ 0.9966, 8.0225, 7.6088, 8.0368, 7.6088, 8.2046, 0.9966, 8.1806 ], "spans": [ { "offset": 24876, "length": 77 } ] }, { "content": "to using the sunlamps and the UV reactor.", "polygon": [ 0.9918, 8.195, 4.5231, 8.195, 4.5231, 8.3627, 0.9918, 8.3579 ], "spans": [ { "offset": 24954, "length": 41 } ] }, { "content": "Experiments using Arochlor 1254 (PCB) in water, irradiated under GE", "polygon": [ 1.4231, 8.5352, 7.1871, 8.5496, 7.1871, 8.7174, 1.4231, 8.703 ], "spans": [ { "offset": 24996, "length": 67 } ] }, { "content": "sunlamps were conducted. The results show that without stirring, disappearance", "polygon": [ 0.9918, 8.7174, 7.7765, 8.7317, 7.7765, 8.9043, 0.9918, 8.8755 ], "spans": [ { "offset": 25064, "length": 78 } ] }, { "content": "with time of the higher isomers was more pronounced than that of the lower", "polygon": [ 0.9918, 8.8851, 7.3501, 8.8995, 7.3501, 9.0576, 0.9918, 9.0432 ], "spans": [ { "offset": 25143, "length": 74 } ] }, { "content": "isomers. With stirring, the lower isomers disappeared at a fast rate. In", "polygon": [ 1.0014, 9.0624, 7.5225, 9.072, 7.5225, 9.2301, 1.0014, 9.2158 ], "spans": [ { "offset": 25218, "length": 72 } ] }, { "content": "both cases, a marked difference in the disappearance rate of the PCB in the light", "polygon": [ 0.9966, 9.2301, 7.8484, 9.2445, 7.8484, 9.4123, 0.9966, 9.3931 ], "spans": [ { "offset": 25291, "length": 81 } ] }, { "content": "flask vs. the dark flask (wrapped in foil) was observed. The bulk of the", "polygon": [ 1.0014, 9.4027, 7.2638, 9.4075, 7.2638, 9.5752, 1.0014, 9.5608 ], "spans": [ { "offset": 25373, "length": 72 } ] }, { "content": "remaining solution at the end of the experiments have been concentrated and", "polygon": [ 0.9966, 9.5752, 7.4411, 9.58, 7.4411, 9.7477, 0.9966, 9.7429 ], "spans": [ { "offset": 25446, "length": 75 } ] }, { "content": "submitted for GC-MS analysis of the photolytic products.", "polygon": [ 1.0014, 9.7477, 5.8024, 9.7573, 5.8024, 9.9346, 1.0014, 9.9202 ], "spans": [ { "offset": 25522, "length": 56 } ] }, { "content": "19", "polygon": [ 4.3027, 10.6151, 4.4656, 10.6151, 4.4608, 10.7397, 4.3027, 10.7397 ], "spans": [ { "offset": 25579, "length": 2 } ] } ], "spans": [ { "offset": 22981, "length": 2600 } ] }, { "pageNumber": 22, "angle": -0.13779999315738678, "width": 8.5, "height": 11.0556, "unit": "inch", "words": [ { "content": "Subsequent", "polygon": [ 1.4522, 0.469, 2.3036, 0.4624, 2.3036, 0.6238, 1.4522, 0.6238 ], 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7.9059, 9.7061, 7.9059, 9.8707, 6.9816, 9.8625 ], "confidence": 0.994, "span": { "offset": 28611, "length": 9 } }, { "content": "the", "polygon": [ 2.5676, 9.8365, 2.8711, 9.8378, 2.8682, 10.0057, 2.5646, 10.0022 ], "confidence": 0.993, "span": { "offset": 28621, "length": 3 } }, { "content": "development", "polygon": [ 2.9805, 9.8383, 4.1096, 9.8442, 4.1075, 10.0181, 2.9777, 10.007 ], "confidence": 0.995, "span": { "offset": 28625, "length": 11 } }, { "content": "of", "polygon": [ 4.2163, 9.845, 4.4104, 9.8463, 4.4085, 10.0203, 4.2142, 10.0188 ], "confidence": 0.998, "span": { "offset": 28637, "length": 2 } }, { "content": "a", "polygon": [ 4.5307, 9.8471, 4.6209, 9.8478, 4.6191, 10.0218, 4.5288, 10.0212 ], "confidence": 0.994, "span": { "offset": 28640, "length": 1 } }, { "content": "generalized", "polygon": [ 4.7302, 9.8485, 5.8539, 9.8584, 5.8529, 10.0276, 4.7285, 10.0226 ], "confidence": 0.993, "span": { "offset": 28642, "length": 11 } }, { "content": "transport", "polygon": [ 5.9633, 9.8595, 6.8737, 9.8693, 6.8733, 10.0292, 5.9623, 10.028 ], "confidence": 0.994, "span": { "offset": 28654, "length": 9 } }, { "content": "model.", "polygon": [ 6.9721, 9.8705, 7.5705, 9.8779, 7.5705, 10.0286, 6.9717, 10.0291 ], "confidence": 0.992, "span": { "offset": 28664, "length": 6 } }, { "content": "21", "polygon": [ 4.3554, 10.481, 4.5279, 10.481, 4.5279, 10.6056, 4.3554, 10.6056 ], "confidence": 0.998, "span": { "offset": 28671, "length": 2 } } ], "lines": [ { "content": "29 February, 1980", "polygon": [ 5.7928, 0.5655, 7.5369, 0.5799, 7.5321, 0.738, 5.7928, 0.7237 ], "spans": [ { "offset": 26647, "length": 17 } ] }, { "content": "BRIEF PROGRESS REPORT", "polygon": [ 3.3348, 0.9058, 5.4958, 0.9201, 5.4958, 1.0495, 3.3348, 1.0352 ], "spans": [ { "offset": 26665, "length": 21 } ] }, { "content": "1.", "polygon": [ 1.1883, 1.4042, 1.3608, 1.3994, 1.356, 1.5336, 1.1883, 1.5384 ], "spans": [ { "offset": 26687, "length": 2 } ] }, { "content": "Organization:", "polygon": [ 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}, { "content": "2.", "polygon": [ 1.1595, 2.4154, 1.3608, 2.4249, 1.356, 2.5783, 1.1499, 2.5783 ], "spans": [ { "offset": 26868, "length": 2 } ] }, { "content": "Principal Investigator:", "polygon": [ 1.5764, 2.4297, 3.9242, 2.4393, 3.9242, 2.6023, 1.5764, 2.5879 ], "spans": [ { "offset": 26871, "length": 23 } ] }, { "content": "Walter J. Weber, Jr., Prof. of", "polygon": [ 4.1254, 2.4489, 7.2255, 2.4633, 7.2207, 2.6071, 4.1254, 2.5975 ], "spans": [ { "offset": 26895, "length": 30 } ] }, { "content": "Environmental and Water Resources Engrg.,", "polygon": [ 4.2452, 2.6262, 8.4233, 2.655, 8.4233, 2.8179, 4.2452, 2.7748 ], "spans": [ { "offset": 26926, "length": 41 } ] }, { "content": "and Chairman, University Program", "polygon": [ 4.2356, 2.7988, 7.5321, 2.8179, 7.5321, 2.9809, 4.2356, 2.9473 ], "spans": [ { "offset": 26968, "length": 32 } ] }, { "content": "in Water Resources", "polygon": [ 4.2452, 2.9617, 6.0947, 2.9809, 6.0947, 3.1246, 4.2452, 3.1055 ], "spans": [ { "offset": 27001, "length": 18 } ] }, { "content": "3.", "polygon": [ 1.1691, 3.2972, 1.3416, 3.3067, 1.3368, 3.4314, 1.1643, 3.4266 ], "spans": [ { "offset": 27020, "length": 2 } ] }, { "content": "Amount:", "polygon": [ 1.562, 3.3067, 2.2663, 3.3067, 2.2663, 3.4361, 1.562, 3.4314 ], "spans": [ { "offset": 27023, "length": 7 } ] }, { "content": "$37,017 (first year)", "polygon": [ 2.4963, 3.2972, 4.5231, 3.3067, 4.5183, 3.4745, 2.4963, 3.4553 ], "spans": [ { "offset": 27031, "length": 20 } ] }, { "content": "4.", "polygon": [ 1.1643, 3.6374, 1.3368, 3.6422, 1.3272, 3.7716, 1.1595, 3.7668 ], "spans": [ { "offset": 27052, "length": 2 } ] }, { "content": "Starting Date:", "polygon": [ 1.562, 3.6326, 2.9946, 3.6422, 2.9946, 3.8004, 1.562, 3.7908 ], "spans": [ { "offset": 27055, "length": 14 } ] }, { "content": "1 July, 1979", "polygon": [ 3.2103, 3.6374, 4.4464, 3.6374, 4.4464, 3.8004, 3.2103, 3.8004 ], "spans": [ { "offset": 27070, "length": 12 } ] }, { "content": "5.", "polygon": [ 1.1547, 3.9585, 1.3512, 3.9681, 1.3416, 4.1262, 1.1452, 4.1215 ], "spans": [ { "offset": 27083, "length": 2 } ] }, { "content": "Projected Completion Date:", "polygon": [ 1.5572, 3.9729, 4.2356, 3.9777, 4.2356, 4.1454, 1.5572, 4.1406 ], "spans": [ { "offset": 27086, "length": 26 } ] }, { "content": "30 June, 1980 (first year)", "polygon": [ 4.4369, 3.9921, 7.0865, 4.0016, 7.0817, 4.179, 4.4369, 4.1502 ], "spans": [ { "offset": 27113, "length": 26 } ] }, { "content": "6.", "polygon": [ 1.1499, 4.3084, 1.3464, 4.3179, 1.3368, 4.4665, 1.1452, 4.4617 ], "spans": [ { "offset": 27140, "length": 2 } ] }, { "content": "Title:", "polygon": [ 1.5524, 4.3179, 2.1609, 4.3179, 2.1609, 4.4665, 1.5524, 4.4665 ], "spans": [ { "offset": 27143, "length": 6 } ] }, { "content": "Particle Dynamics and Related Pollutant Transport", "polygon": [ 2.3718, 4.3132, 7.4171, 4.3515, 7.4171, 4.524, 2.3718, 4.4905 ], "spans": [ { "offset": 27150, "length": 49 } ] }, { "content": "in Tributary River-Lake Systems", "polygon": [ 2.4628, 4.4857, 5.6874, 4.5144, 5.6826, 4.6822, 2.4628, 4.6534 ], "spans": [ { "offset": 27200, "length": 31 } ] }, { "content": "7.", "polygon": [ 1.1547, 4.8403, 1.3224, 4.8451, 1.3176, 4.9793, 1.1499, 4.9745 ], "spans": [ { "offset": 27232, "length": 2 } ] }, { "content": "Summary :", "polygon": [ 1.5572, 4.8499, 2.367, 4.8595, 2.3622, 5.0033, 1.5572, 4.9889 ], "spans": [ { "offset": 27235, "length": 9 } ] }, { "content": "Development of a modeling framework for description", "polygon": [ 2.5682, 4.8307, 7.8148, 4.8643, 7.8148, 5.032, 2.5634, 4.9985 ], "spans": [ { "offset": 27245, "length": 51 } ] }, { "content": "and prediction of the transport of solids and solids-", "polygon": [ 2.573, 5.008, 8.0209, 5.032, 8.0209, 5.1902, 2.573, 5.1758 ], "spans": [ { "offset": 27297, "length": 53 } ] }, { "content": ".associated pollutants from riverine to lacustrine", "polygon": [ 2.5155, 5.1854, 7.6184, 5.2045, 7.6136, 5.3627, 2.5155, 5.3435 ], "spans": [ { "offset": 27351, "length": 50 } ] }, { "content": "systems. Particle dynamics -- including aggregation", "polygon": [ 2.5778, 5.3579, 7.7142, 5.3771, 7.7142, 5.5448, 2.5778, 5.516 ], "spans": [ { "offset": 27402, "length": 51 } ] }, { "content": "and settling phenomena -- transport, and differential", "polygon": [ 2.5778, 5.5208, 7.7957, 5.5544, 7.7957, 5.7125, 2.5778, 5.6886 ], "spans": [ { "offset": 27454, "length": 53 } ] }, { "content": "accumulation in local shear planes will be described.", "polygon": [ 2.573, 5.6982, 7.9825, 5.7221, 7.9825, 5.8851, 2.573, 5.8563 ], "spans": [ { "offset": 27508, "length": 53 } ] }, { "content": "Laboratory and field data will be collected for model", "polygon": [ 2.5682, 5.8707, 8.0065, 5.8946, 8.0065, 6.0576, 2.5682, 6.0288 ], "spans": [ { "offset": 27562, "length": 53 } ] }, { "content": "calibration and verification.", "polygon": [ 2.573, 6.0384, 5.5389, 6.0576, 5.5341, 6.2157, 2.573, 6.2014 ], "spans": [ { "offset": 27616, "length": 29 } ] }, { "content": "8.", "polygon": [ 1.1499, 6.3835, 1.3272, 6.3835, 1.3224, 6.5177, 1.1452, 6.5081 ], "spans": [ { "offset": 27646, "length": 2 } ] }, { "content": "Results/Findings to. Date: Major findings to date on this project", "polygon": [ 1.5428, 6.3787, 8.2173, 6.417, 8.2173, 6.58, 1.5428, 6.532 ], "spans": [ { "offset": 27649, "length": 65 } ] }, { "content": "derive from the analysis of data obtained in the fall", "polygon": [ 2.5586, 6.556, 8.0017, 6.58, 7.9969, 6.7429, 2.5586, 6.7141 ], "spans": [ { "offset": 27715, "length": 53 } ] }, { "content": "sampling survey on the Huron River. These data appear", "polygon": [ 2.573, 6.7333, 8.1167, 6.7573, 8.1167, 6.9298, 2.573, 6.8962 ], "spans": [ { "offset": 27769, "length": 53 } ] }, { "content": "to reinforce earlier convictions regarding the role", "polygon": [ 2.5682, 6.8962, 7.81, 6.9298, 7.81, 7.0927, 2.5682, 7.0544 ], "spans": [ { "offset": 27823, "length": 51 } ] }, { "content": "of flocculation in effecting particle growth, especially", "polygon": [ 2.5634, 7.064, 8.3227, 7.1071, 8.3179, 7.2748, 2.5634, 7.2221 ], "spans": [ { "offset": 27875, "length": 56 } ] }, { "content": "within the cohesive fraction of suspended solids and", "polygon": [ 2.5682, 7.2413, 7.9154, 7.2701, 7.9154, 7.433, 2.5634, 7.3947 ], "spans": [ { "offset": 27932, "length": 52 } ] }, { "content": "sediment materials.", "polygon": [ 2.5682, 7.4042, 4.5375, 7.4138, 4.5375, 7.5768, 2.5634, 7.5672 ], "spans": [ { "offset": 27985, "length": 19 } ] }, { "content": "Since this fraction has been", "polygon": [ 4.7148, 7.4282, 7.6088, 7.4378, 7.6088, 7.6007, 4.7148, 7.5864 ], "spans": [ { "offset": 28005, "length": 28 } ] }, { "content": "previously identified as the predominant vector in", "polygon": [ 2.5634, 7.5864, 7.6998, 7.6103, 7.6998, 7.7733, 2.5634, 7.7493 ], "spans": [ { "offset": 28034, "length": 50 } ] }, { "content": "riverine to lacustrine transport of toxic substance,", "polygon": [ 2.5634, 7.7541, 7.8723, 7.7876, 7.8723, 7.9458, 2.5634, 7.9122 ], "spans": [ { "offset": 28085, "length": 52 } ] }, { "content": "this finding puts us one step closer to the ultimate", "polygon": [ 2.573, 7.9218, 7.9059, 7.9554, 7.9011, 8.1183, 2.573, 8.0943 ], "spans": [ { "offset": 28138, "length": 52 } ] }, { "content": "description of toxic pollutant transport in the Great", "polygon": [ 2.5586, 8.0991, 8.0017, 8.1375, 8.0017, 8.2956, 2.5586, 8.2669 ], "spans": [ { "offset": 28191, "length": 53 } ] }, { "content": "Lakes Basin (GLB) .", "polygon": [ 2.5586, 8.2812, 4.3985, 8.2812, 4.3985, 8.4442, 2.5586, 8.4346 ], "spans": [ { 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6.3822, 0.9968, 4.1494, 0.9537 ], "spans": [ { "offset": 29311, "length": 26 } ] }, { "content": "Organization:", "polygon": [ 1.0062, 1.1214, 2.1082, 1.131, 2.1082, 1.2796, 1.0062, 1.27 ], "spans": [ { "offset": 29338, "length": 13 } ] }, { "content": "Department of Atmospheric and Oceanic Science", "polygon": [ 1.4278, 1.3083, 5.2945, 1.3275, 5.2945, 1.4713, 1.4278, 1.4473 ], "spans": [ { "offset": 29352, "length": 45 } ] }, { "content": "The University of Michigan", "polygon": [ 1.4374, 1.4761, 3.6702, 1.4952, 3.6702, 1.639, 1.4374, 1.6102 ], "spans": [ { "offset": 29398, "length": 26 } ] }, { "content": "Ann Arbor, Michigan 48109", "polygon": [ 1.4231, 1.639, 3.5648, 1.6534, 3.5648, 1.8019, 1.4231, 1.7828 ], "spans": [ { "offset": 29425, "length": 25 } ] }, { "content": "Principal Investigators:", "polygon": [ 1.0014, 1.9745, 3.0474, 1.9984, 3.0474, 2.1422, 1.0014, 2.1182 ], "spans": [ { "offset": 29451, "length": 24 } ] }, { "content": "Professors Robert M. Owen, David K. Rea and Guy A. Meadows", "polygon": [ 1.4135, 2.1566, 6.3822, 2.2093, 6.3822, 2.3579, 1.4135, 2.286 ], "spans": [ { "offset": 29476, "length": 58 } ] }, { "content": "Amount and duration:", "polygon": [ 0.987, 2.492, 2.688, 2.5064, 2.688, 2.6406, 0.9822, 2.6262 ], "spans": [ { "offset": 29535, "length": 20 } ] }, { "content": "$49,953.00", "polygon": [ 1.4231, 2.6598, 2.2807, 2.6646, 2.2807, 2.8131, 1.4231, 2.8083 ], "spans": [ { "offset": 29556, "length": 10 } ] }, { "content": "7/1/79 to 6/30/80", "polygon": [ 2.9611, 2.6789, 4.4129, 2.6885, 4.4129, 2.8467, 2.9563, 2.8323 ], "spans": [ { "offset": 29567, "length": 17 } ] }, { "content": "Title:", "polygon": [ 0.9775, 3.0096, 1.4901, 3.0144, 1.4853, 3.1342, 0.9775, 3.1294 ], "spans": [ { "offset": 29585, "length": 6 } ] }, { "content": "\"A flux model for suspended particulates and associated chemical", "polygon": [ 1.4135, 3.1774, 6.8805, 3.2397, 6.8805, 3.3834, 1.4135, 3.3259 ], "spans": [ { "offset": 29592, "length": 64 } ] }, { "content": "substances in large lakes.\"", "polygon": [ 1.4087, 3.3547, 3.7325, 3.3643, 3.7325, 3.5224, 1.4039, 3.4984 ], "spans": [ { "offset": 29657, "length": 27 } ] }, { "content": "Summary of Project:", "polygon": [ 0.9679, 3.6758, 2.573, 3.6949, 2.573, 3.8627, 0.9631, 3.8483 ], "spans": [ { "offset": 29685, "length": 19 } ] }, { "content": "We intend to determine the physical and chemical nature, and spatial", "polygon": [ 1.3799, 3.8675, 7.2207, 3.9346, 7.2159, 4.0975, 1.3751, 4.0112 ], "spans": [ { "offset": 29705, "length": 68 } ] }, { "content": "and temporal distribution of suspended particulates in our region of study.", "polygon": [ 0.9679, 4.0352, 7.3596, 4.1119, 7.3596, 4.27, 0.9679, 4.1838 ], "spans": [ { "offset": 29774, "length": 75 } ] }, { "content": "Combining this information with seasonal and annual synoptic current data,", "polygon": [ 0.9727, 4.2029, 7.3644, 4.2844, 7.3596, 4.4473, 0.9727, 4.3515 ], "spans": [ { "offset": 29850, "length": 74 } ] }, { "content": "to be compiled by other research groups, will lead to an understanding of", "polygon": [ 0.9679, 4.3707, 7.2159, 4.4473, 7.2111, 4.6055, 0.9679, 4.524 ], "spans": [ { "offset": 29925, "length": 73 } ] }, { "content": "the tranpsort of the suspended materials and any toxic substances adsorbed", "polygon": [ 0.9631, 4.548, 7.2974, 4.6199, 7.2926, 4.7732, 0.9631, 4.7013 ], "spans": [ { "offset": 29999, "length": 74 } ] }, { "content": "onto them. To ascertain the long-term effects of anthropogenic compounds", "polygon": [ 0.9583, 4.7253, 7.2063, 4.7924, 7.2063, 4.9505, 0.9583, 4.8643 ], "spans": [ { "offset": 30074, "length": 72 } ] }, { "content": "we will also study, in conjunction with GLERL, the materials now accumulating", "polygon": [ 0.9535, 4.893, 7.5417, 4.9697, 7.5417, 5.1231, 0.9535, 5.0368 ], "spans": [ { "offset": 30147, "length": 77 } ] }, { "content": "on the lake floor and compare them to both the present suspended materials", "polygon": [ 0.9535, 5.0608, 7.2782, 5.1422, 7.2782, 5.2956, 0.9535, 5.2093 ], "spans": [ { "offset": 30225, "length": 74 } ] }, { "content": "and to the underlying, pre-settlement, sediments. Goals of the first year", "polygon": [ 0.9439, 5.2333, 7.2878, 5.3148, 7.283, 5.4633, 0.9439, 5.3819 ], "spans": [ { "offset": 30300, "length": 73 } ] }, { "content": "of the project are to: 1) establish operational shipboard and laboratory pro-", "polygon": [ 0.9487, 5.4058, 7.5369, 5.4825, 7.5321, 5.6406, 0.9439, 5.5544 ], "spans": [ { "offset": 30374, "length": 77 } ] }, { "content": "cedures for sampling and analyzing suspended materials; 2) determine the", "polygon": [ 0.9535, 5.5735, 7.1105, 5.6454, 7.1105, 5.794, 0.9535, 5.7317 ], "spans": [ { "offset": 30452, "length": 72 } ] }, { "content": "geological and geochemical nature of both the suspended materials and the top", "polygon": [ 0.9343, 5.7461, 7.5369, 5.8228, 7.5321, 5.9857, 0.9343, 5.8994 ], "spans": [ { "offset": 30525, "length": 77 } ] }, { "content": "few centimeters of bottom sediments; and 3) determine the various hydraulic", "polygon": [ 0.9391, 5.9138, 7.3644, 5.9905, 7.3644, 6.1486, 0.9343, 6.0672 ], "spans": [ { "offset": 30603, "length": 75 } ] }, { "content": "parameters (concentration, size, type of particles) to establish calibration", "polygon": [ 0.9343, 6.0959, 7.4459, 6.1582, 7.4459, 6.3116, 0.9343, 6.2493 ], "spans": [ { "offset": 30679, "length": 76 } ] }, { "content": "and correlation standards for existing and newly-constructed optical sensors.", "polygon": [ 0.9439, 6.2637, 7.5082, 6.3403, 7.5034, 6.4985, 0.9391, 6.4074 ], "spans": [ { "offset": 30756, "length": 77 } ] }, { "content": "Significant results/findings to date:", "polygon": [ 0.9295, 6.6135, 4.1158, 6.6423, 4.1158, 6.7956, 0.9295, 6.7573 ], "spans": [ { "offset": 30834, "length": 37 } ] }, { "content": "The Flux Model project which began August 1, 1979, has achieved several", "polygon": [ 1.3464, 6.7908, 7.4363, 6.8579, 7.4315, 7.0065, 1.3464, 6.9394 ], "spans": [ { "offset": 30872, "length": 71 } ] }, { "content": "important goals as of February 29, 1980. The first year's field work was", "polygon": [ 0.9295, 6.9681, 7.1824, 7.0209, 7.1776, 7.179, 0.9295, 7.1071 ], "spans": [ { "offset": 30944, "length": 72 } ] }, { "content": "carried out on board the NOAA Ship Shenehon in August. We occupied six", "polygon": [ 0.9295, 7.1311, 7.0242, 7.1982, 7.0242, 7.3563, 0.9295, 7.2748 ], "spans": [ { "offset": 31017, "length": 70 } ] }, { "content": "stations along a transect across Lake Michigan at approximately 43\u00b0N latitude.", "polygon": [ 0.9247, 7.3036, 7.5753, 7.3611, 7.5753, 7.5241, 0.9247, 7.457 ], "spans": [ { "offset": 31088, "length": 78 } ] }, { "content": "At each station transmissivity and temperature profiles were measured, and", "polygon": [ 0.9152, 7.4713, 7.2638, 7.5432, 7.2638, 7.7014, 0.9152, 7.6247 ], "spans": [ { "offset": 31167, "length": 74 } ] }, { "content": "large-volume, 12 liters, water samples, surface sediment samples, and where", "polygon": [ 0.9295, 7.6487, 7.3501, 7.7205, 7.3453, 7.8739, 0.9295, 7.7972 ], "spans": [ { "offset": 31242, "length": 75 } ] }, { "content": "possible, sediment core samples were taken. We encountered no undue diffi-", "polygon": [ 0.92, 7.826, 7.3453, 7.8883, 7.3453, 8.0416, 0.9152, 7.9697 ], "spans": [ { "offset": 31318, "length": 74 } ] }, { "content": "culties with using our sampling gear off the Shenehon.", "polygon": [ 0.9343, 7.9937, 5.5293, 8.0416, 5.5293, 8.1854, 0.9343, 8.1423 ], "spans": [ { "offset": 31393, "length": 54 } ] }, { "content": "All samples were returned to our laboratories for analysis. We have", "polygon": [ 1.332, 8.3436, 7.168, 8.4059, 7.168, 8.5592, 1.332, 8.4873 ], "spans": [ { "offset": 31448, "length": 67 } ] }, { "content": "established the necessary laboratory procedures and sample analysis is", "polygon": [ 0.9152, 8.5065, 6.9188, 8.5832, 6.914, 8.7365, 0.9152, 8.6551 ], "spans": [ { "offset": 31516, "length": 70 } ] }, { "content": "going smoothly. In the laboratory, one liter of each well-mixed, 12-liter", "polygon": [ 0.9104, 8.6886, 7.2542, 8.7509, 7.2542, 8.9091, 0.9104, 8.842 ], "spans": [ { "offset": 31587, "length": 73 } ] }, { "content": "sample was drawn off for use with the laser polar-nephelometer being de-", "polygon": [ 0.9152, 8.8659, 7.0865, 8.9234, 7.0817, 9.0912, 0.9152, 9.0097 ], "spans": [ { "offset": 31661, "length": 72 } ] }, { "content": "signed and built by Dr. Meadows. The remaining lake water was filtered", "polygon": [ 0.9152, 9.0289, 7.0051, 9.096, 7.0051, 9.2445, 0.9152, 9.1774 ], "spans": [ { "offset": 31734, "length": 70 } ] }, { "content": "through 0.45u Millipore filters and the total concentration of suspended", "polygon": [ 0.9247, 9.2014, 7.0769, 9.2781, 7.0769, 9.4362, 0.9247, 9.3595 ], "spans": [ { "offset": 31805, "length": 72 } ] }, { "content": "material determined.", "polygon": [ 0.9056, 9.3787, 2.6305, 9.3835, 2.6305, 9.5273, 0.9056, 9.5225 ], "spans": [ { "offset": 31878, "length": 20 } ] }, { "content": "Concentrations range from 1.05 to 2.40 mg/1 with one", "polygon": [ 2.7024, 9.3787, 7.2303, 9.441, 7.2303, 9.6039, 2.7024, 9.5416 ], "spans": [ { "offset": 31899, "length": 52 } ] }, { "content": "unusually low value of 0.31 mg/1. A trans-lake profile of concentrations shows", "polygon": [ 0.9056, 9.556, 7.6615, 9.6183, 7.6615, 9.7765, 0.9056, 9.695 ], "spans": [ { "offset": 31952, "length": 78 } ] }, { "content": "a maximum along the thermocline (1.74 to 2.40 mg/1), the clearest water at", "polygon": [ 0.9008, 9.7333, 7.3213, 9.7861, 7.3213, 9.9394, 0.9008, 9.8627 ], "spans": [ { "offset": 32031, "length": 74 } ] }, { "content": "mid-depth (1.05 to 1.42 mg/1) and moderate concentrations (1.80 to 2.09 mg/1)", "polygon": [ 0.8912, 9.8915, 7.4746, 9.9682, 7.4746, 10.1263, 0.8912, 10.0496 ], "spans": [ { "offset": 32106, "length": 77 } ] }, { "content": "23", "polygon": [ 4.3362, 10.4474, 4.5039, 10.4474, 4.5039, 10.5672, 4.3315, 10.5672 ], "spans": [ { "offset": 32184, "length": 2 } ] } ], "spans": [ { "offset": 29275, "length": 2911 } ] }, { "pageNumber": 26, "angle": 0.3669984042644501, "width": 8.5139, "height": 11.0417, "unit": "inch", "words": [ { "content": "along", "polygon": [ 1.0015, 0.7732, 1.4271, 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7.5234, 10.088, 6.7633, 10.0775 ], "confidence": 0.995, "span": { "offset": 35704, "length": 9 } }, { "content": "24", "polygon": [ 4.3025, 10.6679, 4.4768, 10.6679, 4.475, 10.7924, 4.3025, 10.7898 ], "confidence": 0.998, "span": { "offset": 35714, "length": 2 } } ], "lines": [ { "content": "along the bottom. This is the expected distribution of suspended material in", "polygon": [ 1.0014, 0.7716, 7.5844, 0.8195, 7.5844, 0.9633, 1.0014, 0.9106 ], "spans": [ { "offset": 32187, "length": 76 } ] }, { "content": "a large stratified lake.", "polygon": [ 0.9966, 0.9441, 3.0376, 0.9489, 3.0376, 1.0879, 0.9918, 1.0831 ], "spans": [ { "offset": 32264, "length": 24 } ] }, { "content": "At the University of Michigan the Flux Model project is subdivided into", "polygon": [ 1.4182, 1.2892, 7.4934, 1.3227, 7.4934, 1.4713, 1.4182, 1.4281 ], "spans": [ { "offset": 32289, "length": 71 } ] }, { "content": "three efforts: physical and optical limnology, chemical and geochemical", "polygon": [ 0.9966, 1.4521, 7.1532, 1.4952, 7.1532, 1.6438, 0.9966, 1.5959 ], "spans": [ { "offset": 32361, "length": 71 } ] }, { "content": "limnology, and geological limnology. A major effort of this year's work", "polygon": [ 0.9966, 1.6198, 7.1532, 1.663, 7.1532, 1.8115, 0.9966, 1.7684 ], "spans": [ { "offset": 32433, "length": 71 } ] }, { "content": "in physical and optical limnology is to design, build, and test a laser", "polygon": [ 0.9918, 1.7924, 7.0765, 1.8307, 7.0718, 1.984, 0.9918, 1.9361 ], "spans": [ { "offset": 32505, "length": 71 } ] }, { "content": "polar nephelometer for determining the in-situ nature of the suspended", "polygon": [ 0.9822, 1.9601, 6.9903, 2.0032, 6.9855, 2.1566, 0.9822, 2.1134 ], "spans": [ { "offset": 32577, "length": 70 } ] }, { "content": "particles. The design of this instrument is predicated upon the physics", "polygon": [ 0.9726, 2.1422, 7.1436, 2.1805, 7.1388, 2.3435, 0.9726, 2.286 ], "spans": [ { "offset": 32648, "length": 71 } ] }, { "content": "of electromagnetic, or Mie scattering of particles which are large in com-", "polygon": [ 0.9822, 2.3051, 7.2442, 2.3531, 7.2442, 2.5064, 0.9822, 2.4537 ], "spans": [ { "offset": 32720, "length": 74 } ] }, { "content": "parison to the wavelength of the incident radiation. Previous", "polygon": [ 0.9726, 2.4825, 6.3339, 2.5064, 6.3339, 2.6598, 0.9678, 2.6214 ], "spans": [ { "offset": 32795, "length": 61 } ] }, { "content": "studies of", "polygon": [ 6.401, 2.5064, 7.3065, 2.5112, 7.3065, 2.6694, 6.401, 2.6646 ], "spans": [ { "offset": 32857, "length": 10 } ] }, { "content": "the Mie scattering characteristics of particles have indicated that an", "polygon": [ 0.987, 2.6502, 6.9903, 2.6885, 6.9903, 2.8371, 0.987, 2.7988 ], "spans": [ { "offset": 32868, "length": 70 } ] }, { "content": "ensemble of randomly oriented, poly-dispersed particles scatter electromagnetic", "polygon": [ 0.9774, 2.8227, 7.7377, 2.8706, 7.7377, 3.0144, 0.9774, 2.9713 ], "spans": [ { "offset": 32939, "length": 79 } ] }, { "content": "radiation in a manner similar to that of spheres of the mean radius of the", "polygon": [ 0.9726, 2.9952, 7.3113, 3.0336, 7.3065, 3.1774, 0.9726, 3.139 ], "spans": [ { "offset": 33019, "length": 74 } ] }, { "content": "distribution. Our nephelometer is designed to image the scattered radiation", "polygon": [ 0.9774, 3.163, 7.4838, 3.2061, 7.479, 3.3499, 0.9774, 3.3115 ], "spans": [ { "offset": 33094, "length": 75 } ] }, { "content": "from a scattering volume of 1 mm3 which, for typical concentrations of", "polygon": [ 0.9726, 3.3403, 6.9616, 3.3691, 6.9568, 3.5224, 0.9726, 3.4793 ], "spans": [ { "offset": 33170, "length": 70 } ] }, { "content": "suspended particulates in the Great Lakes, should contain about one hundred", "polygon": [ 0.9726, 3.508, 7.3544, 3.5416, 7.3544, 3.6949, 0.9726, 3.6518 ], "spans": [ { "offset": 33241, "length": 75 } ] }, { "content": "particles. The nephelometer will sense and record scattered light at", "polygon": [ 0.963, 3.6806, 6.8897, 3.7141, 6.8897, 3.8723, 0.963, 3.8291 ], "spans": [ { "offset": 33317, "length": 68 } ] }, { "content": "5.0 increments from 0\u00b0 to 180\u00ba around the scattering volume.", "polygon": [ 0.9726, 3.8291, 6.0991, 3.8818, 6.0991, 4.0352, 0.9726, 3.9777 ], "spans": [ { "offset": 33386, "length": 60 } ] }, { "content": "Concurrent with the design and construction phase of the nephelometer,", "polygon": [ 1.399, 4.2029, 7.3832, 4.2365, 7.3832, 4.3946, 1.399, 4.3419 ], "spans": [ { "offset": 33447, "length": 70 } ] }, { "content": "theoretical calculations of Mie scattering intensity have been completed.", "polygon": [ 0.9678, 4.3659, 7.1963, 4.409, 7.1963, 4.5624, 0.9678, 4.5048 ], "spans": [ { "offset": 33518, "length": 73 } ] }, { "content": "Numerical simulations of the interaction of incident radiation with spherical", "polygon": [ 0.9486, 4.5336, 7.5557, 4.5767, 7.5557, 4.7349, 0.9439, 4.6726 ], "spans": [ { "offset": 33592, "length": 77 } ] }, { "content": "particles of various demensions and indices of refraction have been completed.", "polygon": [ 0.9534, 4.7061, 7.6227, 4.7493, 7.6179, 4.9074, 0.9534, 4.8547 ], "spans": [ { "offset": 33670, "length": 78 } ] }, { "content": "These calculations are based on an index. of refraction of water to the", "polygon": [ 0.9582, 4.8739, 7.134, 4.917, 7.134, 5.0656, 0.9582, 5.0176 ], "spans": [ { "offset": 33749, "length": 71 } ] }, { "content": "particulates of 1.100 and particle radii of 1, 10, and 27 u, respectively.", "polygon": [ 0.9534, 5.0512, 7.273, 5.0895, 7.273, 5.2525, 0.9534, 5.1997 ], "spans": [ { "offset": 33821, "length": 74 } ] }, { "content": "Through comparison of experimentally determined volume scattering functions", "polygon": [ 0.9534, 5.2237, 7.3832, 5.262, 7.3832, 5.4154, 0.9534, 5.3723 ], "spans": [ { "offset": 33896, "length": 75 } ] }, { "content": "from known Great Lake samples with theoretical distributions for the same", "polygon": [ 0.9534, 5.3866, 7.2155, 5.4346, 7.2155, 5.5783, 0.9534, 5.5352 ], "spans": [ { "offset": 33972, "length": 73 } ] }, { "content": "size particles the nephelometer will be calibrated.", "polygon": [ 0.963, 5.564, 5.323, 5.5783, 5.323, 5.7317, 0.963, 5.7173 ], "spans": [ { "offset": 34046, "length": 51 } ] }, { "content": "At present all design and machining of the nephelometer has been completed.", "polygon": [ 1.3799, 5.8994, 7.7808, 5.9521, 7.7808, 6.1055, 1.3751, 6.0576 ], "spans": [ { "offset": 34098, "length": 75 } ] }, { "content": "Assembly of the components is approximately 50% complete. Theoretical Mie", "polygon": [ 0.9391, 6.072, 7.2969, 6.1199, 7.2969, 6.2637, 0.9391, 6.2301 ], "spans": [ { "offset": 34174, "length": 73 } ] }, { "content": "scattering distributions for the size ranges of suspended particulates from", "polygon": [ 0.9439, 6.2493, 7.3832, 6.2924, 7.3784, 6.441, 0.9439, 6.3978 ], "spans": [ { "offset": 34248, "length": 75 } ] }, { "content": "our Lake Michigan samples are approximately 80% complete. Calibration of the", "polygon": [ 0.9534, 6.4218, 7.5461, 6.4601, 7.5461, 6.6039, 0.9534, 6.5704 ], "spans": [ { "offset": 34324, "length": 76 } ] }, { "content": "completed instrument is scheduled for early March, 1980 and analysis of test", "polygon": [ 0.9534, 6.5943, 7.455, 6.6327, 7.455, 6.786, 0.9534, 6.7381 ], "spans": [ { "offset": 34401, "length": 76 } ] }, { "content": "samples to begin in April, 1980.", "polygon": [ 0.9486, 6.7669, 3.6844, 6.7716, 3.6844, 6.9298, 0.9486, 6.925 ], "spans": [ { "offset": 34478, "length": 32 } ] }, { "content": "The chemical and geochemical analyses conducted for this project include", "polygon": [ 1.3703, 7.1119, 7.5413, 7.1502, 7.5413, 7.3036, 1.3703, 7.2557 ], "spans": [ { "offset": 34511, "length": 72 } ] }, { "content": "atomic-absorption spectrophotometry analyses of the lake water (filtrate) ,", "polygon": [ 0.9439, 7.2844, 7.2682, 7.3228, 7.2682, 7.4761, 0.9439, 7.4378 ], "spans": [ { "offset": 34584, "length": 75 } ] }, { "content": "suspended sediments (filtered residue), and bottom sediments. The filtrate", "polygon": [ 0.9343, 7.457, 7.3832, 7.4905, 7.3784, 7.6439, 0.9343, 7.6103 ], "spans": [ { "offset": 34660, "length": 74 } ] }, { "content": "was analyzed for Cr, Fe, Mn, Ca, K, Mg, and Na in all 34 samples and the", "polygon": [ 0.9343, 7.6295, 7.1101, 7.6582, 7.1101, 7.8164, 0.9343, 7.778 ], "spans": [ { "offset": 34735, "length": 72 } ] }, { "content": "available phase of these same elements, plus Ca, was determined in the residue.", "polygon": [ 0.9343, 7.7972, 7.685, 7.8356, 7.685, 7.9889, 0.9343, 7.9506 ], "spans": [ { "offset": 34808, "length": 79 } ] }, { "content": "Surface and near-surface sediment samples have been analyzed for available phase", "polygon": [ 0.9343, 7.9697, 7.7904, 8.0177, 7.7904, 8.171, 0.9343, 8.1183 ], "spans": [ { "offset": 34888, "length": 80 } ] }, { "content": "elements, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn as well as for", "polygon": [ 0.9391, 8.1471, 6.9424, 8.1758, 6.9376, 8.3292, 0.9391, 8.3052 ], "spans": [ { "offset": 34969, "length": 70 } ] }, { "content": "phosphorus, sulfide, and total organic carbon and inorganic carbon.", "polygon": [ 0.9343, 8.3244, 6.6693, 8.3483, 6.6693, 8.5113, 0.9343, 8.4777 ], "spans": [ { "offset": 35040, "length": 67 } ] }, { "content": "Analysis and interpretation of the chemical/geochemical data is still", "polygon": [ 1.3559, 8.6742, 7.2682, 8.7078, 7.2682, 8.8515, 1.3559, 8.8228 ], "spans": [ { "offset": 35108, "length": 69 } ] }, { "content": "in progress. Thus far the following significant findings have been noted:", "polygon": [ 0.9343, 8.8515, 7.2538, 8.8803, 7.249, 9.0337, 0.9343, 8.9905 ], "spans": [ { "offset": 35178, "length": 73 } ] }, { "content": "1) There is a significant depletion of Ca, Mg, Fe, and Mn and an enrichment", "polygon": [ 0.9343, 9.0193, 7.4503, 9.0576, 7.4455, 9.2014, 0.9343, 9.163 ], "spans": [ { "offset": 35252, "length": 75 } ] }, { "content": "of Cr in the suspended material relative to the surface sediments. This", "polygon": [ 0.9295, 9.1918, 7.1005, 9.2254, 7.1005, 9.3739, 0.9295, 9.3308 ], "spans": [ { "offset": 35328, "length": 71 } ] }, { "content": "suggests dilution of carbonates by biogenic material in the suspended matter", "polygon": [ 0.9343, 9.3691, 7.4455, 9.3979, 7.4455, 9.5512, 0.9343, 9.5081 ], "spans": [ { "offset": 35400, "length": 76 } ] }, { "content": "and mobilization of Fe, Mn, and Cr in the bottom sediments. 2) Concentrations", "polygon": [ 0.9295, 9.5321, 7.5988, 9.5704, 7.5988, 9.7238, 0.9295, 9.671 ], "spans": [ { "offset": 35477, "length": 77 } ] }, { "content": "of Mn in the particulate phase increase linearly with depth. This trend suggests", "polygon": [ 0.9343, 9.7094, 7.8623, 9.7525, 7.8623, 9.9059, 0.9295, 9.8484 ], "spans": [ { "offset": 35555, "length": 80 } ] }, { "content": "scavenging of dissolved Mn in surface (< 45 m) and relatively rapid transport", "polygon": [ 0.9343, 9.8819, 7.5221, 9.9155, 7.5173, 10.0832, 0.9343, 10.0353 ], "spans": [ { "offset": 35636, "length": 77 } ] }, { "content": "24", "polygon": [ 4.3025, 10.6679, 4.4749, 10.6679, 4.4654, 10.7925, 4.3025, 10.7877 ], "spans": [ { "offset": 35714, "length": 2 } ] } ], "spans": [ { "offset": 32187, "length": 3529 } ] }, { "pageNumber": 27, "angle": 0.5132901072502136, "width": 8.5139, "height": 11.0417, "unit": "inch", "words": [ { "content": "of", "polygon": [ 1.0004, 0.6447, 1.1679, 0.6461, 1.1649, 0.7965, 0.9974, 0.7943 ], "confidence": 0.996, "span": { "offset": 35717, "length": 2 } }, { "content": "fine-grained,", "polygon": [ 1.2684, 0.6469, 2.3499, 0.6566, 2.3468, 0.811, 1.2654, 0.7979 ], "confidence": 0.992, "span": { 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"length": 2 } }, { "content": "the", "polygon": [ 0.9355, 7.6748, 1.1923, 7.6768, 1.1923, 7.8131, 0.9355, 7.8164 ], "confidence": 0.999, "span": { "offset": 38376, "length": 3 } }, { "content": "sediments.", "polygon": [ 1.2859, 7.6775, 2.1129, 7.6858, 2.1129, 7.8138, 1.2859, 7.8122 ], "confidence": 0.992, "span": { "offset": 38380, "length": 10 } }, { "content": "25", "polygon": [ 4.4031, 10.5672, 4.5708, 10.5672, 4.5708, 10.6822, 4.4031, 10.6822 ], "confidence": 0.993, "span": { "offset": 38391, "length": 2 } } ], "lines": [ { "content": "of fine-grained, Mn-rich particles to subsurface waters.", "polygon": [ 0.9966, 0.6422, 5.9315, 0.6901, 5.9315, 0.8339, 0.9966, 0.7907 ], "spans": [ { "offset": 35717, "length": 56 } ] }, { "content": "The increase in", "polygon": [ 5.941, 0.6901, 7.249, 0.6949, 7.249, 0.853, 5.941, 0.8483 ], "spans": [ { "offset": 35774, "length": 15 } ] }, { "content": "particulate Mn concentrations is more pronounced than that observed for Fe.", "polygon": [ 0.9918, 0.8195, 7.4071, 0.8818, 7.4071, 1.016, 0.987, 0.9633 ], "spans": [ { "offset": 35790, "length": 75 } ] }, { "content": "As this trend is opposite that expected on the basis of the relative oxidation", "polygon": [ 0.987, 0.992, 7.6706, 1.0495, 7.6659, 1.1837, 0.987, 1.1358 ], "spans": [ { "offset": 35866, "length": 78 } ] }, { "content": "rates of these metals, it is probable that the removal of Mn from solution", "polygon": [ 0.987, 1.1646, 7.3257, 1.2173, 7.3209, 1.3562, 0.987, 1.3083 ], "spans": [ { "offset": 35945, "length": 74 } ] }, { "content": "involves a phase (MnCO3?) other than oxides. 3) An inverse relationship", "polygon": [ 0.9918, 1.3323, 7.1484, 1.385, 7.1484, 1.5336, 0.987, 1.4808 ], "spans": [ { "offset": 36020, "length": 71 } ] }, { "content": "exists between the Ca/Mg ratio of the suspended particulates and the dissolved", "polygon": [ 0.9966, 1.5, 7.6659, 1.5623, 7.6611, 1.7013, 0.9966, 1.6534 ], "spans": [ { "offset": 36092, "length": 78 } ] }, { "content": "Mg concentration. Moreover, Ca/Mg ratios of surface (< 45m) particulates", "polygon": [ 0.9774, 1.6725, 7.2442, 1.7253, 7.2442, 1.8786, 0.9774, 1.8163 ], "spans": [ { "offset": 36171, "length": 72 } ] }, { "content": "are significantly higher than for those in deeper water. These data suggest", "polygon": [ 0.9774, 1.8451, 7.4934, 1.9026, 7.4934, 2.0559, 0.9774, 1.9888 ], "spans": [ { "offset": 36244, "length": 75 } ] }, { "content": "either preferential removal of clay minerals by aggregates and/or formation", "polygon": [ 0.9822, 2.0128, 7.4071, 2.0703, 7.4071, 2.2237, 0.9774, 2.1566 ], "spans": [ { "offset": 36320, "length": 75 } ] }, { "content": "of a MgCO3 phase on the surface of the carbonates.", "polygon": [ 0.9774, 2.1805, 5.2559, 2.2093, 5.2559, 2.3626, 0.9774, 2.3435 ], "spans": [ { "offset": 36396, "length": 50 } ] }, { "content": "The geological effort has concentrated on analyses of the physical nature", "polygon": [ 1.399, 2.5304, 7.6515, 2.5927, 7.6467, 2.7412, 1.399, 2.6742 ], "spans": [ { "offset": 36447, "length": 73 } ] }, { "content": "of the suspended and bottom sediments. Materials recovered from suspension", "polygon": [ 0.9726, 2.6933, 7.4023, 2.7604, 7.4023, 2.9138, 0.9726, 2.8467 ], "spans": [ { "offset": 36521, "length": 74 } ] }, { "content": "on the filters were inspected by scanning electron microscopy and by optical", "polygon": [ 0.9678, 2.8706, 7.4886, 2.9282, 7.4886, 3.0863, 0.9678, 3.0144 ], "spans": [ { "offset": 36596, "length": 76 } ] }, { "content": "microscopy. These examinations show the suspended material in Lake Michigan", "polygon": [ 0.9582, 3.0432, 7.4838, 3.0959, 7.4838, 3.2492, 0.9582, 3.1869 ], "spans": [ { "offset": 36673, "length": 75 } ] }, { "content": "to be dominated by diatioms (perhaps 70-90%) with lesser amounts of mineral", "polygon": [ 0.9678, 3.2109, 7.3928, 3.2636, 7.388, 3.4074, 0.9678, 3.3595 ], "spans": [ { "offset": 36749, "length": 75 } ] }, { "content": "grains. Not enough of the mineral component was recovered on the filters", "polygon": [ 0.9678, 3.3834, 7.2203, 3.4361, 7.2155, 3.5799, 0.9678, 3.532 ], "spans": [ { "offset": 36825, "length": 72 } ] }, { "content": "to allow x-ray diffraction techniques to be used for quantitative mineral", "polygon": [ 0.963, 3.556, 7.2155, 3.6087, 7.2155, 3.7524, 0.963, 3.6997 ], "spans": [ { "offset": 36898, "length": 73 } ] }, { "content": "determinations.", "polygon": [ 0.9582, 3.7093, 2.2566, 3.7189, 2.2566, 3.8818, 0.9582, 3.8723 ], "spans": [ { "offset": 36972, "length": 15 } ] }, { "content": "We are planning to begin optical mineral identification .", "polygon": [ 2.362, 3.7333, 7.2203, 3.7764, 7.2203, 3.925, 2.362, 3.8914 ], "spans": [ { "offset": 36988, "length": 57 } ] }, { "content": "in March, 1980.", "polygon": [ 0.963, 3.8962, 2.2279, 3.901, 2.2279, 4.0448, 0.963, 4.04 ], "spans": [ { "offset": 37046, "length": 15 } ] }, { "content": "The lake-floor surface sediments we sampled fall into two categories,", "polygon": [ 1.3846, 4.2413, 7.2778, 4.3036, 7.2778, 4.4473, 1.3846, 4.3802 ], "spans": [ { "offset": 37062, "length": 69 } ] }, { "content": "those presently accumulating and outcrops of Pleistocene glacial clays.", "polygon": [ 0.9439, 4.4186, 7.019, 4.4665, 7.019, 4.6199, 0.9439, 4.5624 ], "spans": [ { "offset": 37132, "length": 71 } ] }, { "content": "Modern sediments are fine silts or silty clays (70 to 90 modal size) and", "polygon": [ 0.9391, 4.5863, 7.1245, 4.639, 7.1245, 4.7876, 0.9391, 4.7253 ], "spans": [ { "offset": 37204, "length": 72 } ] }, { "content": "have a mineralogy averaging 50% quartz, 22% dolomite, 10% calcite, 14% feld-", "polygon": [ 0.9343, 4.7541, 7.4742, 4.802, 7.4694, 4.9601, 0.9343, 4.9074 ], "spans": [ { "offset": 37277, "length": 76 } ] }, { "content": "spar, and 4% clay minerals. These sediments undergo a rapid reduction in", "polygon": [ 0.9534, 4.9266, 7.2107, 4.9793, 7.2059, 5.1326, 0.9486, 5.0751 ], "spans": [ { "offset": 37354, "length": 72 } ] }, { "content": "porosity from 85% at the surface to 55% at a depth of 7 cm. At a sedimentation", "polygon": [ 0.9391, 5.0991, 7.7138, 5.1566, 7.7138, 5.3052, 0.9391, 5.2381 ], "spans": [ { "offset": 37427, "length": 78 } ] }, { "content": "rate of 1 mm/y this corresponds to a dewatering rate of perhaps 50 g/cm -. y.", "polygon": [ 0.9439, 5.262, 7.3544, 5.3243, 7.3544, 5.4873, 0.9439, 5.4154 ], "spans": [ { "offset": 37506, "length": 77 } ] }, { "content": ":", "polygon": [ 7.8335, 4.3084, 7.8767, 4.3132, 7.8767, 4.3755, 7.8288, 4.3755 ], "spans": [ { "offset": 37584, "length": 1 } ] }, { "content": "\u00b7 The relict, periglacial deposits were encountered at stations 3 and 4 on", "polygon": [ 1.1978, 5.6119, 7.5413, 5.6694, 7.5413, 5.8132, 1.193, 5.7605 ], "spans": [ { "offset": 37586, "length": 74 } ] }, { "content": "the mid-lake high. They are clay sized (90 to 100) with a sandy lag deposit", "polygon": [ 0.9486, 5.7844, 7.4598, 5.8419, 7.4598, 5.9953, 0.9486, 5.9234 ], "spans": [ { "offset": 37661, "length": 75 } ] }, { "content": "on top. Mineralogy of the fine-grained fraction reveals about 85% quartz,", "polygon": [ 0.9391, 5.9617, 7.2634, 6.0049, 7.2634, 6.163, 0.9391, 6.1055 ], "spans": [ { "offset": 37737, "length": 73 } ] }, { "content": "7% feldspar, 5% clay minerals, and 3% dolomite. Porosity remains constant", "polygon": [ 0.9391, 6.1199, 7.2826, 6.1822, 7.2826, 6.3307, 0.9391, 6.2684 ], "spans": [ { "offset": 37811, "length": 73 } ] }, { "content": "throughout the top several cm of these sediments.", "polygon": [ 0.9486, 6.2972, 5.1217, 6.3212, 5.117, 6.4697, 0.9486, 6.441 ], "spans": [ { "offset": 37885, "length": 49 } ] }, { "content": "Piston cores of the lake-floor sediment recovered at stations 1,2, and", "polygon": [ 1.3559, 6.6423, 7.364, 6.6998, 7.3592, 6.8531, 1.3559, 6.786 ], "spans": [ { "offset": 37935, "length": 70 } ] }, { "content": "5 have been opened, described, and sampled for geological and geochemical", "polygon": [ 0.9439, 6.81, 7.1867, 6.8675, 7.1867, 7.0256, 0.9439, 6.9586 ], "spans": [ { "offset": 38006, "length": 73 } ] }, { "content": "analysis. These downcore samples will provide evidence upon the history of", "polygon": [ 0.9343, 6.9873, 7.4407, 7.04, 7.4407, 7.1982, 0.9343, 7.1263 ], "spans": [ { "offset": 38080, "length": 74 } ] }, { "content": "fluctuations in the limnological and geochemical nature of Lake Michigan.", "polygon": [ 0.9391, 7.1598, 7.1628, 7.2078, 7.158, 7.3659, 0.9391, 7.2988 ], "spans": [ { "offset": 38155, "length": 73 } ] }, { "content": "Samples sent off for C-14 age dating should be analyzed by Arpil, 1980,", "polygon": [ 0.9295, 7.3324, 7.0047, 7.3803, 7.0047, 7.5432, 0.9295, 7.4809 ], "spans": [ { "offset": 38229, "length": 71 } ] }, { "content": "and will allow us to determine the timing; and rates of events recorded in", "polygon": [ 0.9343, 7.5049, 7.2682, 7.5528, 7.2682, 7.711, 0.9343, 7.6391 ], "spans": [ { "offset": 38301, "length": 74 } ] }, { "content": "the sediments.", "polygon": [ 0.9343, 7.6726, 2.1129, 7.6774, 2.1081, 7.8164, 0.9343, 7.8116 ], "spans": [ { "offset": 38376, "length": 14 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"content": "Guy", "polygon": [ 3.9906, 1.8776, 4.3061, 1.8792, 4.3055, 2.032, 3.9906, 2.0294 ], "confidence": 0.993, "span": { "offset": 38558, "length": 3 } }, { "content": "A.", "polygon": [ 4.4057, 1.8797, 4.5828, 1.8803, 4.5816, 2.032, 4.4048, 2.032 ], "confidence": 0.992, "span": { "offset": 38562, "length": 2 } }, { "content": "Meadows", "polygon": [ 4.7091, 1.8807, 5.4335, 1.8819, 5.4335, 2.0186, 4.7075, 2.0317 ], "confidence": 0.997, "span": { "offset": 38565, "length": 7 } }, { "content": "Nathan", "polygon": [ 3.9857, 2.042, 4.6087, 2.0486, 4.6059, 2.1937, 3.9857, 2.1731 ], "confidence": 0.998, "span": { "offset": 38573, "length": 6 } }, { "content": "Hawley", "polygon": [ 4.719, 2.0497, 5.3377, 2.0555, 5.3377, 2.2141, 4.7157, 2.1972 ], "confidence": 0.995, "span": { "offset": 38580, "length": 6 } }, { "content": "3.", "polygon": [ 1.0206, 2.3674, 1.2026, 2.3674, 1.2015, 2.492, 1.0206, 2.4895 ], "confidence": 0.992, "span": { "offset": 38587, "length": 2 } }, { "content": 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In", "polygon": [ 0.9918, 4.2461, 7.6711, 4.294, 7.6711, 4.4473, 0.9918, 4.4042 ], "spans": [ { "offset": 38857, "length": 64 } ] }, { "content": "order to accurately predict the ultimate depositional site (s) of", "polygon": [ 0.9918, 4.4234, 7.5753, 4.4569, 7.5705, 4.6199, 0.9918, 4.5815 ], "spans": [ { "offset": 38922, "length": 65 } ] }, { "content": "these pollutants, the transport and depositional behavior of the", "polygon": [ 0.9918, 4.5911, 7.5705, 4.6294, 7.5705, 4.7876, 0.9918, 4.7541 ], "spans": [ { "offset": 38988, "length": 64 } ] }, { "content": "clay particles must be known. 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S. T. 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Bennett", "polygon": [ 3.4651, 2.6181, 4.7669, 2.6229, 4.7669, 2.7474, 3.4651, 2.7426 ], "spans": [ { "offset": 42407, "length": 15 } ] }, { "content": "3.", "polygon": [ 1.0338, 2.9245, 1.2157, 2.9293, 1.2109, 3.0872, 1.029, 3.0824 ], "spans": [ { "offset": 42423, "length": 2 } ] }, { "content": "Amount of Sponsored Funds:", "polygon": [ 1.364, 2.9484, 3.5704, 2.9484, 3.5704, 3.0872, 1.364, 3.0824 ], "spans": [ { "offset": 42426, "length": 26 } ] }, { "content": "FY 1979- $13.5 K (OMPA); $5 K (GLERL)", "polygon": [ 3.7235, 2.9532, 6.8632, 2.9532, 6.8632, 3.1063, 3.7235, 3.092 ], "spans": [ { "offset": 42453, "length": 37 } ] }, { "content": "FY 1980- $44.0 K (OMPA); $14.4 K (GLERL)", "polygon": [ 3.7379, 3.1255, 7.112, 3.1303, 7.1073, 3.2787, 3.7379, 3.2739 ], "spans": [ { "offset": 42491, "length": 40 } ] }, { "content": "4.", "polygon": [ 1.0434, 3.4653, 1.1965, 3.4701, 1.1869, 3.5802, 1.0386, 3.5802 ], "spans": [ { "offset": 42532, "length": 2 } ] }, { "content": "Starting Date: July 1, 1979", "polygon": [ 1.3497, 3.451, 3.757, 3.451, 3.757, 3.6137, 1.3497, 3.6089 ], "spans": [ { "offset": 42535, "length": 27 } ] }, { "content": "5.", "polygon": [ 1.0386, 3.7812, 1.2061, 3.786, 1.2061, 3.9344, 1.0338, 3.9344 ], "spans": [ { "offset": 42563, "length": 2 } ] }, { "content": "Project Completion Date:", "polygon": [ 1.3688, 3.8004, 3.3885, 3.8004, 3.3885, 3.9392, 1.3688, 3.9344 ], "spans": [ { "offset": 42566, "length": 24 } ] }, { "content": "6.", "polygon": [ 1.0481, 4.1354, 1.1869, 4.1354, 1.1869, 4.2599, 1.0481, 4.2551 ], "spans": [ { "offset": 42591, "length": 2 } ] }, { "content": "Title:", "polygon": [ 1.3736, 4.1306, 2.0149, 4.1306, 2.0149, 4.2599, 1.3736, 4.2599 ], "spans": [ { "offset": 42594, "length": 6 } ] }, { "content": "Modeling Particle Dynamics in the Great Lakes.", "polygon": [ 2.0389, 4.1402, 5.9347, 4.1402, 5.9347, 4.279, 2.0389, 4.279 ], "spans": [ { "offset": 42601, "length": 46 } ] }, { "content": "7.", "polygon": [ 1.0434, 4.4705, 1.1965, 4.4752, 1.1917, 4.5997, 1.0434, 4.5949 ], "spans": [ { "offset": 42648, "length": 2 } ] }, { "content": "Project Summary:", "polygon": [ 1.3592, 4.48, 2.7089, 4.4848, 2.7089, 4.6188, 1.3544, 4.6093 ], "spans": [ { "offset": 42651, "length": 16 } ] }, { "content": "The purpose of this project is to develop mathematical models describing", "polygon": [ 1.699, 4.6476, 7.8012, 4.6523, 7.8012, 4.8055, 1.699, 4.7911 ], "spans": [ { "offset": 42668, "length": 72 } ] }, { "content": "the transport of particles in the Great Lakes. This will be accomplished in", "polygon": [ 1.3736, 4.8151, 7.806, 4.8247, 7.806, 4.973, 1.3736, 4.9587 ], "spans": [ { "offset": 42741, "length": 75 } ] }, { "content": "three steps. First, a one-dimensional model describing the vertical distribu-", "polygon": [ 1.3736, 4.9826, 7.9735, 4.9922, 7.9735, 5.1358, 1.3736, 5.1214 ], "spans": [ { "offset": 42817, "length": 77 } ] }, { "content": "tion of particles of various size classes will be developed and verified", "polygon": [ 1.3688, 5.1453, 7.4614, 5.1597, 7.4614, 5.3033, 1.3688, 5.2889 ], "spans": [ { "offset": 42895, "length": 72 } ] }, { "content": "against field observations. 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"length": 26 } ] }, { "content": "First semiannual progress", "polygon": [ 3.811, 3.2663, 5.9283, 3.4828, 5.9138, 3.6415, 3.7966, 3.4251 ], "spans": [ { "offset": 43846, "length": 25 } ] }, { "content": "report.", "polygon": [ 3.8062, 3.4732, 4.3788, 3.5116, 4.3692, 3.6367, 3.8014, 3.5934 ], "spans": [ { "offset": 43872, "length": 7 } ] }, { "content": "DATE", "polygon": [ 3.1999, 3.6079, 3.4453, 3.6271, 3.4309, 3.7089, 3.1903, 3.6896 ], "spans": [ { "offset": 43880, "length": 4 } ] }, { "content": "ISSUED TO", "polygon": [ 4.5665, 3.7041, 5.0429, 3.7377, 5.0332, 3.8339, 4.5617, 3.8003 ], "spans": [ { "offset": 43885, "length": 9 } ] }, { "content": "GLERL LIBRARY", "polygon": [ 3.5656, 5.1472, 5.8465, 5.2578, 5.8368, 5.6186, 3.5464, 5.5176 ], "spans": [ { "offset": 43895, "length": 13 } ] } ], "spans": [ { "offset": 43711, "length": 197 } ] } ], "paragraphs": [ { "spans": [ { "offset": 0, "length": 20 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 0.7004, 0.5522, 1.2389, 0.5409, 1.2537, 1.2459, 0.7153, 1.2572 ] } ], "content": "TD 427 .07 G7 Apr 80" }, { "spans": [ { "offset": 21, "length": 125 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 2.0915, 1.1557, 6.6734, 1.1701, 6.6697, 2.3427, 2.0878, 2.3283 ] } ], "content": "FIRST SEMIANNUAL PROGRESS REPORT to The Office of Marine Pollution Assessment National Oceanic and Atmospheric Administration" }, { "spans": [ { "offset": 147, "length": 68 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 2.0933, 2.7227, 6.6312, 2.7227, 6.6312, 3.7281, 2.0933, 3.7281 ] } ], "content": "THE CYCLING OF TOXIC ORGANIC SUBSTANCES IN THE GREAT LAKES ECOSYSTEM" }, { "spans": [ { "offset": 216, "length": 13 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 3.1876, 4.3821, 3.9131, 4.4449, 3.8931, 4.6758, 3.1675, 4.6129 ] } ], "content": "LAKE SUPERIOR" }, { "spans": [ { "offset": 230, "length": 16 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 4.0374, 4.6373, 4.7208, 4.6373, 4.7208, 4.7431, 4.0374, 4.7431 ] } ], "content": "\u00bfSt. Marys River" }, { "spans": [ { "offset": 247, "length": 13 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 3.6769, 4.9622, 3.8257, 4.9837, 3.714, 5.7553, 3.5652, 5.7338 ] } ], "content": "LAKE MICHIGAN" }, { "spans": [ { "offset": 261, "length": 10 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 4.1962, 4.9355, 4.3347, 4.88, 4.5609, 5.4428, 4.4224, 5.4984 ] } ], "content": "LAKE HURON" }, { "spans": [ { "offset": 272, "length": 12 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 5.8272, 4.7812, 5.8757, 4.8393, 5.4137, 5.2242, 5.3652, 5.166 ] } ], "content": "St. Lawrence" }, { "spans": [ { "offset": 285, "length": 6 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 5.6928, 4.9981, 5.7421, 5.0499, 5.5533, 5.229, 5.504, 5.1771 ] } ], "content": "-River" }, { "spans": [ { "offset": 292, "length": 12 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 5.4751, 5.2773, 5.4907, 5.3589, 4.9133, 5.4695, 4.8976, 5.388 ] } ], "content": "LAKE ONTARIO" }, { "spans": [ { "offset": 305, "length": 13 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 4.9999, 5.4695, 5.5918, 5.4695, 5.5918, 5.5513, 4.9999, 5.5513 ] } ], "content": "Niagara River" }, { "spans": [ { "offset": 319, "length": 16 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 4.9085, 5.229, 4.9805, 5.331, 4.4415, 5.711, 4.3695, 5.609 ] } ], "content": "JSt. Clair River" }, { "spans": [ { "offset": 336, "length": 30 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 3.7829, 5.5195, 4.4637, 5.5388, 4.4561, 5.8062, 3.7753, 5.7869 ] } ], "content": "LAKE~3 ST. CLAIR Detroit River" }, { "spans": [ { "offset": 367, "length": 9 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 4.8019, 5.6499, 4.8363, 5.7293, 4.4128, 5.9121, 4.3784, 5.8327 ] } ], "content": "LAKE ERIE" }, { "spans": [ { "offset": 377, "length": 172 } ], "boundingRegions": [ { "pageNumber": 1, "polygon": [ 2.508, 7.2331, 6.0269, 7.2418, 6.0217, 9.3506, 2.5027, 9.3419 ] } ], "content": "April 1980 Cooperative Program Between Great Lakes Environmental Research Laboratory ERL/NOAA Ann Arbor, Michigan 48104 and University of Michigan Ann Arbor, Michigan 48109" }, { "spans": [ { "offset": 550, "length": 13 } ], "boundingRegions": [ { "pageNumber": 2, "polygon": [ 3.9322, 0.7715, 6.1793, 0.8195, 6.1714, 1.1933, 3.9242, 1.1454 ] } ], "content": "GLERI LIBRARY" }, { "spans": [ { "offset": 564, "length": 125 } ], "boundingRegions": [ { "pageNumber": 2, "polygon": [ 2.1359, 2.087, 6.1223, 2.1014, 6.1181, 3.2636, 2.1317, 3.2492 ] } ], "content": "First Semiannual Progress Report To The Office Of Marine Pollution Assessment National Oceanic and Atmospheric Administration" }, { "spans": [ { "offset": 690, "length": 68 } ], "boundingRegions": [ { "pageNumber": 2, "polygon": [ 2.5538, 3.786, 5.8603, 3.7956, 5.8594, 4.0915, 2.553, 4.0819 ] } ], "content": "THE CYCLING OF TOXIC ORGANIC SUBSTANCES IN THE GREAT LAKES ECOSYSTEM" }, { "spans": [ { "offset": 759, "length": 10 } ], "boundingRegions": [ { "pageNumber": 2, "polygon": [ 3.7277, 7.0975, 4.5758, 7.0975, 4.5758, 7.2365, 3.7277, 7.2365 ] } ], "content": "April 1980" }, { "spans": [ { "offset": 770, "length": 27 } ], "boundingRegions": [ { "pageNumber": 2, "polygon": [ 3.0569, 7.4378, 5.3427, 7.4426, 5.3424, 7.5864, 3.0566, 7.5816 ] } ], "content": "Cooperative Program Between" }, { "spans": [ { "offset": 798, "length": 84 } ], "boundingRegions": [ { "pageNumber": 2, "polygon": [ 2.2951, 7.7733, 6.105, 7.7924, 6.1009, 8.6108, 2.291, 8.5917 ] } ], "content": "Great Lakes Environmental Research Laboratory ERL/NOAA Ann Arbor, Michigan 48104 and" }, { "spans": [ { "offset": 883, "length": 22 } ], "boundingRegions": [ { "pageNumber": 2, "polygon": [ 3.2198, 8.7988, 5.0837, 8.8036, 5.0837, 8.9474, 3.2198, 8.9426 ] } ], "content": "University of Michigan" }, { "spans": [ { "offset": 906, "length": 19 } ], "boundingRegions": [ { "pageNumber": 2, "polygon": [ 3.124, 8.9714, 4.7675, 8.9761, 4.7675, 9.1199, 3.124, 9.1103 ] } ], "content": "Ann Arbor, Michigan" }, { "spans": [ { "offset": 926, "length": 5 } ], "boundingRegions": [ { "pageNumber": 2, "polygon": [ 4.9064, 8.9714, 5.3329, 8.9761, 5.3281, 9.1055, 4.9064, 9.1007 ] } ], "content": "48109" }, { "spans": [ { "offset": 932, "length": 12 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.2745, 1.2125, 2.3004, 1.2173, 2.2999, 1.3371, 1.274, 1.3323 ] } ], "content": "Introduction" }, { "spans": [ { "offset": 945, "length": 1017 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.2531, 1.556, 7.783, 1.5781, 7.7751, 3.9269, 1.2452, 3.9048 ] } ], "content": "The Great Lakes Environmental Research Laboratory (GLERL) , with the support of NOAA's Office of Marine Pollution Assessment (OMPA) has initiated a program on the cycling, transport and fate of toxic organic compounds in the Great Lakes. Our objective is to improve our knowledge of where selected contaminants are within the ecosystem, what their expected residence time in any location or phase will be, how rapidly and into what they will decompose and where they will finally reside under conditions of long-term low-level leakage into the environment or a major loading from some point source. This information is critical for toxicologists, ecologists and resource managers to evaluate the potential impacts of particular materials intro- duced into the Great Lakes region. In the final analysis environmental resource management comes down to a trade off between \"acceptable risks\" and \"unacceptable costs\" and best judgments leading to a suitable balance can only be achieved if the information base is sound." }, { "spans": [ { "offset": 1963, "length": 536 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.2371, 4.0856, 7.847, 4.1201, 7.8401, 5.4498, 1.2302, 5.4153 ] } ], "content": "The manner in which we address our objective has evolved through in- house discussion, participation in and recommendations of workshops, formal cooperative research planning with members of the University of Michigan staff and discussion with other outside investigators. A cooperative program was established between GLERL and the University of Michigan to bring the research planning to fruition. This has resulted in a program jointly directed by the two organizations to provide the types of expertise needed to attack the problem." }, { "spans": [ { "offset": 2500, "length": 79 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.2464, 5.6197, 7.2405, 5.6454, 7.2393, 5.9352, 1.2452, 5.9095 ] } ], "content": "The program management established for this cooperative program is shown below:" }, { "spans": [ { "offset": 2580, "length": 5 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.6578, 6.1295, 2.0795, 6.1295, 2.0795, 6.2397, 1.6578, 6.2397 ] } ], "content": "GLERL" }, { "spans": [ { "offset": 2586, "length": 4 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.9118, 6.2972, 2.2568, 6.2972, 2.2568, 6.4074, 1.9118, 6.4074 ] } ], "content": "COTR" }, { "spans": [ { "offset": 2591, "length": 85 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.9022, 6.4601, 3.5217, 6.4601, 3.5217, 7.2701, 1.9022, 7.2701 ] } ], "content": "Dr. E. J. Aubert Director, GLERL Program Coordinator Dr. B. J. Eadie Research Chemist" }, { "spans": [ { "offset": 2677, "length": 45 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.6435, 7.6438, 3.7677, 7.6547, 3.7661, 7.9697, 1.6419, 7.9589 ] } ], "content": "University of Michigan Principal Investigator" }, { "spans": [ { "offset": 2723, "length": 138 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.8989, 7.9915, 6.0433, 8.0096, 6.0398, 8.8302, 1.8954, 8.8121 ] } ], "content": "Dr. A. M. Beeton Director, Great Lakes and Marine Waters Center Program Coordinator Dr. C. P. Rice Assoc. Res. Sci., Great Lakes Res. Div." }, { "spans": [ { "offset": 2862, "length": 83 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.208, 9.0081, 7.2931, 9.0315, 7.292, 9.3302, 1.2069, 9.3068 ] } ], "content": "A number of projects have been established and available funds have been obligated." }, { "spans": [ { "offset": 2946, "length": 63 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.6387, 9.5225, 6.9486, 9.5608, 6.9476, 9.7046, 1.6376, 9.6662 ] } ], "content": "This first semi-annual progress report will cover the approach," }, { "spans": [ { "offset": 3010, "length": 74 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 1.2218, 9.6998, 7.4746, 9.7333, 7.4738, 9.8867, 1.221, 9.8532 ] } ], "content": "short-term goals and an outline of resources followed by a set of progress" }, { "spans": [ { "offset": 3085, "length": 1 } ], "boundingRegions": [ { "pageNumber": 3, "polygon": [ 4.3027, 10.4762, 4.3842, 10.4762, 4.3842, 10.5912, 4.3027, 10.5912 ] } ], "content": "1" }, { "spans": [ { "offset": 3087, "length": 61 } ], "boundingRegions": [ { "pageNumber": 4, "polygon": [ 1.3464, 1.1981, 6.4884, 1.2269, 6.4876, 1.3754, 1.3456, 1.3467 ] } ], "content": "reports on individual projects under the cooperative program." }, { "spans": [ { "offset": 3149, "length": 8 } ], "boundingRegions": [ { "pageNumber": 4, "polygon": [ 1.3033, 1.5288, 1.998, 1.5288, 1.998, 1.6725, 1.3033, 1.6725 ] } ], "content": "Approach" }, { "spans": [ { "offset": 3158, "length": 561 } ], "boundingRegions": [ { "pageNumber": 4, "polygon": [ 1.2999, 1.872, 7.7287, 1.8996, 7.723, 3.2396, 1.2942, 3.212 ] } ], "content": "Most persistent toxic organics behave similarly in the aquatic en- vironment; they are only slightly soluble and partition onto particulate material, they tend to photodecompose as a major removal pathway, they are generally resistant to microbial attack and they concentrate in the sediments. This similarity of behavior makes a modeling approach attractive and recently, toxic cycling models have begun to appear in the literature. These models require compound-specific experimental rate process information tailored for the ecosystem to which it is applied." }, { "spans": [ { "offset": 3720, "length": 804 } ], "boundingRegions": [ { "pageNumber": 4, "polygon": [ 1.2785, 3.387, 7.5414, 3.4018, 7.5366, 5.4111, 1.2738, 5.3962 ] } ], "content": "We propose to employ a systems analysis approach, in which a series of models will be developed. It is our intent to adapt currently avail- able models, which are primarily first order decay approximations or steady state simulations, as well as develop a time dependent ecosystem cycling model. Our models will be continuously upgraded through the results of our process research experiments, both in-house and under contract, along with other information entering the literature. Carrying our process research and modeling simultaneously will allow us to continually determine the weakest or most sensitive areas in our systems approach and define research necessary to address these specific problems. Ultimately our goal is to combine calibrated ecosystem cycling models with system transport models." }, { "spans": [ { "offset": 4525, "length": 16 } ], "boundingRegions": [ { "pageNumber": 4, "polygon": [ 1.2697, 5.5783, 2.6367, 5.5927, 2.6353, 5.7269, 1.2683, 5.7125 ] } ], "content": "Short Time Goals" }, { "spans": [ { "offset": 4542, "length": 691 } ], "boundingRegions": [ { "pageNumber": 4, "polygon": [ 1.2643, 5.9165, 7.7032, 5.9481, 7.695, 7.6227, 1.2561, 7.5911 ] } ], "content": "Within the time frame of the next 1-3 years we propose to work on two classes of toxic organic substances, polynuclear aromatic hydrocarbons (PAH) and polychlorinated biphenyls (PCB). Field and laboratory studies on the rates of process such as volatilization, photodecomposition, sorption onto particulates indigenous to the Great Lakes, aggregation and settling will be designed to support a toxic organic cycling model. Initial models will be adaptations of existing toxic organic cycling models based on a mass balance framework and known decomposition pathways. One and two dimensional transport will be simulated and evaluated first before consider- ing a three dimensional simulation." }, { "spans": [ { "offset": 5234, "length": 622 } ], "boundingRegions": [ { "pageNumber": 4, "polygon": [ 1.2514, 7.7916, 7.3456, 7.8018, 7.343, 9.341, 1.2488, 9.3308 ] } ], "content": "The polychlorinated biphenyls are a known major contaminant of the Great Lakes and are fairly well studied compounds while the polycyclic aromatic hydrocarbons, which are products of incomplete combustion, are perceived to be a problem near the industrialized regions of the Great Lakes. Very little is known about the environmental distribution and pathways of the latter family of compounds. Therefore, some fairly fundamental work may need to be done prior to developing a calibrated model. Calibration data will be supplied through the field and lab experimental programs conducted in-house, under contract or jointly." }, { "spans": [ { "offset": 5857, "length": 1 } ], "boundingRegions": [ { "pageNumber": 4, "polygon": [ 4.389, 10.4905, 4.4656, 10.4905, 4.4656, 10.6104, 4.389, 10.6104 ] } ], "content": "2" }, { "spans": [ { "offset": 5859, "length": 64 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 2.6019, 1.71, 7.6619, 1.6189, 7.6658, 1.8322, 2.6057, 1.9234 ] } ], "content": "Figure 1. Toxic Organic Cycling; Procoss Study/Modoling Strntogy" }, { "spans": [ { "offset": 5924, "length": 4 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.1996, 2.4462, 1.4587, 2.4462, 1.4587, 2.5566, 1.1996, 2.5566 ] } ], "content": "1982" }, { "spans": [ { "offset": 5929, "length": 67 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.8325, 2.1057, 4.51, 2.0961, 4.511, 2.3772, 1.8335, 2.3868 ] } ], "content": "Rovlow Stato of the Art In Transport and Particle Dynamics Modoling" }, { "spans": [ { "offset": 5997, "length": 55 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 6.6506, 2.0913, 9.8034, 2.0961, 9.803, 2.3436, 6.6502, 2.3388 ] } ], "content": "Rovlow State of the Art in Toxic Organic Cycling Moduls" }, { "spans": [ { "offset": 6053, "length": 151 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.8262, 2.6477, 4.7024, 2.6333, 4.7051, 3.1632, 1.8289, 3.1776 ] } ], "content": "Devolop and calibrato stato of the urt lako circulation, transport, particle dynamics and settling model hierarchy at appropriato timo and space scalos" }, { "spans": [ { "offset": 6205, "length": 88 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 6.6456, 2.6333, 9.5393, 2.6285, 9.5397, 2.8875, 6.646, 2.8923 ] } ], "content": "Dovolop and culibrato state of the art toxic cycling model hierarchy for the Great Lakes" }, { "spans": [ { "offset": 6294, "length": 95 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.0783, 3.4247, 7.879, 3.4199, 7.8793, 3.6933, 4.0787, 3.6981 ] } ], "content": "Combino models, run oxorcisos; host workshop for modolors, oxporimentalists and potential usors" }, { "spans": [ { "offset": 6390, "length": 106 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.0447, 3.9572, 7.7011, 3.9466, 7.7019, 4.2248, 4.0455, 4.2354 ] } ], "content": ".Identify arons of weakness in process simulations, potential user needs. Initiate process Research (e.g.)" }, { "spans": [ { "offset": 6497, "length": 18 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.1794, 4.3361, 5.4804, 4.3409, 5.4798, 4.4944, 4.1789, 4.4896 ] } ], "content": "Air-water exchange" }, { "spans": [ { "offset": 6516, "length": 44 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 8.3492, 4.3457, 9.8607, 4.3457, 9.8607, 4.6047, 8.3492, 4.6047 ] } ], "content": "Same for ecological- toxic cycling processes" }, { "spans": [ { "offset": 6561, "length": 107 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.8212, 4.3745, 3.6317, 4.3641, 3.6347, 4.8869, 1.8242, 4.8973 ] } ], "content": "Perform model experiments to develop and test hypoth- eses related to all'\"signif- icant physical processes" }, { "spans": [ { "offset": 6669, "length": 20 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.0883, 4.4896, 5.4798, 4.4896, 5.4798, 4.6143, 4.0883, 4.6143 ] } ], "content": ". Photodecomposition" }, { "spans": [ { "offset": 6690, "length": 25 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.0879, 4.6239, 5.8061, 4.6191, 5.8064, 4.7438, 4.0883, 4.7486 ] } ], "content": ". Bacterial decomposition" }, { "spans": [ { "offset": 6716, "length": 55 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.0782, 4.7438, 7.2504, 4.7342, 7.2512, 5.0096, 4.079, 5.0192 ] } ], "content": ". Sorption, particlo aggregation, transport and sinking" }, { "spans": [ { "offset": 6772, "length": 4 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.1612, 4.9692, 1.4299, 4.9692, 1.4299, 5.07, 1.1612, 5.07 ] } ], "content": "1983" }, { "spans": [ { "offset": 6777, "length": 1 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 2.7831, 4.9309, 2.8887, 4.9335, 2.8839, 5.1254, 2.7783, 5.1227 ] } ], "content": "$" }, { "spans": [ { "offset": 6779, "length": 32 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.1213, 5.022, 6.4011, 5.0124, 6.4016, 5.1419, 4.1218, 5.1515 ] } ], "content": "Biological uptake and motabolism" }, { "spans": [ { "offset": 6812, "length": 25 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.8359, 5.1755, 3.5057, 5.1515, 3.5076, 5.2858, 1.8378, 5.3098 ] } ], "content": "Improve process submodels" }, { "spans": [ { "offset": 6838, "length": 30 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.0787, 5.1515, 6.1228, 5.1515, 6.1228, 5.2858, 4.0787, 5.2858 ] } ], "content": ". Sediment-poro water exchange" }, { "spans": [ { "offset": 6869, "length": 25 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 8.3441, 5.1419, 9.9855, 5.1371, 9.9859, 5.2666, 8.3444, 5.2714 ] } ], "content": "Improve process submodels" }, { "spans": [ { "offset": 6895, "length": 34 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.0781, 5.2867, 6.3915, 5.2762, 6.3921, 5.4105, 4.0787, 5.421 ] } ], "content": ". Zooplankton grazing on particles" }, { "spans": [ { "offset": 6930, "length": 4 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.1612, 5.4297, 1.4203, 5.4297, 1.4203, 5.5304, 1.1612, 5.5304 ] } ], "content": "1984" }, { "spans": [ { "offset": 6935, "length": 21 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.8186, 5.7031, 3.2245, 5.7031, 3.2245, 5.8326, 1.8186, 5.8326 ] } ], "content": "Next Generation Model" }, { "spans": [ { "offset": 6957, "length": 21 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 8.3296, 5.6791, 9.7168, 5.6743, 9.7172, 5.799, 8.3301, 5.8038 ] } ], "content": "Next Generation Modol" }, { "spans": [ { "offset": 6979, "length": 4 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.1708, 5.9909, 1.4203, 5.9909, 1.4203, 6.1012, 1.1708, 6.1012 ] } ], "content": "1985" }, { "spans": [ { "offset": 6984, "length": 95 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.0691, 6.1012, 7.2792, 6.1012, 7.2792, 6.3554, 4.0691, 6.3554 ] } ], "content": "Combino models, exercise and test; host workshop, identify arons of interest and wouknoss, etc." }, { "spans": [ { "offset": 7080, "length": 4 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 1.1346, 6.432, 1.3963, 6.437, 1.3942, 6.5522, 1.1324, 6.5473 ] } ], "content": "1986" }, { "spans": [ { "offset": 7085, "length": 7 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 4.7936, 6.648, 5.2687, 6.648, 5.2687, 6.7631, 4.7936, 6.7631 ] } ], "content": "Itorato" }, { "spans": [ { "offset": 7093, "length": 21 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 6.5546, 6.6384, 7.3656, 6.6384, 7.3656, 6.8974, 6.5546, 6.8974 ] } ], "content": "Products Applications" }, { "spans": [ { "offset": 7115, "length": 1 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 0.2735, 4.0771, 0.3887, 4.0771, 0.3887, 4.1634, 0.2735, 4.1634 ] } ], "content": "3" }, { "spans": [ { "offset": 7117, "length": 1 } ], "boundingRegions": [ { "pageNumber": 5, "polygon": [ 0.7534, 6.0676, 0.7955, 6.0741, 0.7859, 6.1365, 0.7438, 6.13 ] } ], "content": ":" }, { "spans": [ { "offset": 7119, "length": 16 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 1.2184, 1.286, 2.5711, 1.286, 2.5711, 1.4059, 1.2184, 1.4059 ] } ], "content": "Resource Outline" }, { "spans": [ { "offset": 7136, "length": 16 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 1.2088, 1.6027, 2.5621, 1.6075, 2.5615, 1.7658, 1.2082, 1.761 ] } ], "content": "Fiscal Year 1979" }, { "spans": [ { "offset": 7153, "length": 10 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 1.6357, 1.9626, 2.38, 1.9674, 2.3792, 2.0873, 1.6349, 2.0825 ] } ], "content": "Resource :" }, { "spans": [ { "offset": 7164, "length": 4 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 4.1685, 1.9674, 4.5282, 1.9674, 4.5282, 2.0873, 4.1685, 2.0873 ] } ], "content": "OMPA" }, { "spans": [ { "offset": 7169, "length": 5 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 4.1637, 2.1401, 4.5906, 2.1401, 4.5906, 2.2505, 4.1637, 2.2505 ] } ], "content": "GLERL" }, { "spans": [ { "offset": 7175, "length": 38 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 5.3533, 1.9626, 7.94, 1.9833, 7.9375, 2.3027, 5.3507, 2.282 ] } ], "content": "$262.9K $ 9.8K (plus 5 days ship time)" }, { "spans": [ { "offset": 7214, "length": 5 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 4.1637, 2.6391, 4.5906, 2.6391, 4.5906, 2.7591, 4.1637, 2.7591 ] } ], "content": "Total" }, { "spans": [ { "offset": 7220, "length": 7 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 5.3485, 2.6343, 5.9481, 2.6343, 5.9481, 2.7831, 5.3485, 2.7831 ] } ], "content": "$272.7K" }, { "spans": [ { "offset": 7228, "length": 23 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 1.6309, 2.975, 3.5647, 2.9846, 3.5641, 3.1094, 1.6303, 3.0998 ] } ], "content": "Allocation of Resource:" }, { "spans": [ { "offset": 7252, "length": 27 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 4.1589, 3.2341, 5.9481, 3.2341, 5.9481, 3.5172, 4.1589, 3.5172 ] } ], "content": "Univ. of Mich $225.4K GLERL" }, { "spans": [ { "offset": 7280, "length": 7 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 5.3389, 3.3973, 5.9433, 3.3973, 5.9433, 3.5508, 5.3389, 3.5508 ] } ], "content": "$ 47.3K" }, { "spans": [ { "offset": 7288, "length": 16 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 1.204, 4.0739, 2.5567, 4.0739, 2.5567, 4.1986, 1.204, 4.1986 ] } ], "content": "Fiscal Year 1980" }, { "spans": [ { "offset": 7305, "length": 10 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 1.6213, 4.4193, 2.3751, 4.4241, 2.3744, 4.5345, 1.6206, 4.5297 ] } ], "content": "Resource :" }, { "spans": [ { "offset": 7316, "length": 4 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 4.1589, 4.4241, 4.5042, 4.4241, 4.5042, 4.5393, 4.1589, 4.5393 ] } ], "content": "OMPA" }, { "spans": [ { "offset": 7321, "length": 7 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 5.3448, 4.4193, 5.9396, 4.4241, 5.9385, 4.5585, 5.3437, 4.5537 ] } ], "content": "$271.9K" }, { "spans": [ { "offset": 7329, "length": 5 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 4.1589, 4.5969, 4.5906, 4.5969, 4.5906, 4.7072, 4.1589, 4.7072 ] } ], "content": "GLERL" }, { "spans": [ { "offset": 7335, "length": 36 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 5.3389, 4.5921, 7.8677, 4.6065, 7.8659, 4.9151, 5.3371, 4.9007 ] } ], "content": "$ 36.6K (plus substantial ship time)" }, { "spans": [ { "offset": 7372, "length": 5 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 4.1589, 5.0959, 4.581, 5.0959, 4.581, 5.2207, 4.1589, 5.2207 ] } ], "content": "Total" }, { "spans": [ { "offset": 7378, "length": 7 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 5.3341, 5.0959, 5.9337, 5.0959, 5.9337, 5.2399, 5.3341, 5.2399 ] } ], "content": "$308.5K" }, { "spans": [ { "offset": 7386, "length": 23 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 1.6213, 5.4222, 3.5548, 5.427, 3.5545, 5.5566, 1.621, 5.5518 ] } ], "content": "Allocation of Resource:" }, { "spans": [ { "offset": 7410, "length": 35 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 4.1541, 5.7725, 5.9393, 5.7773, 5.9385, 6.086, 4.1532, 6.0812 ] } ], "content": "Univ. of Mich.$149.4K GLERL $159.1K" }, { "spans": [ { "offset": 7446, "length": 1 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 7.8236, 4.3426, 7.8721, 4.3466, 7.8668, 4.4097, 7.8184, 4.4057 ] } ], "content": ":" }, { "spans": [ { "offset": 7448, "length": 15 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 1.1896, 6.6026, 2.4661, 6.6074, 2.4656, 6.7466, 1.1891, 6.7418 ] } ], "content": "Project Reports" }, { "spans": [ { "offset": 7464, "length": 108 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 1.1848, 6.9529, 7.272, 6.9529, 7.272, 7.26, 1.1848, 7.26 ] } ], "content": "Status reports on the projects under the cooperative program at the University of Michigan and GLERL follow." }, { "spans": [ { "offset": 7573, "length": 1 } ], "boundingRegions": [ { "pageNumber": 6, "polygon": [ 4.3411, 10.4174, 4.4227, 10.4206, 4.4179, 10.5421, 4.3363, 10.5389 ] } ], "content": "4" }, { "spans": [ { "offset": 7575, "length": 27 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 3.8564, 1.1804, 5.1526, 1.19, 5.1502, 1.515, 3.854, 1.5054 ] } ], "content": "Progress Report April, 1980" }, { "spans": [ { "offset": 7603, "length": 67 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.2952, 1.6708, 6.7688, 1.7034, 6.7669, 2.024, 1.2932, 1.9914 ] } ], "content": "1. Organization: Great Lakes Environmental Research Laboratory NOAA" }, { "spans": [ { "offset": 7671, "length": 47 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 2.9067, 2.0393, 5.1467, 2.0393, 5.1467, 2.356, 2.9067, 2.356 ] } ], "content": "2300 Washtenaw Avenue Ann Arbor, Michigan 48104" }, { "spans": [ { "offset": 7719, "length": 45 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.2762, 2.5423, 5.3197, 2.5528, 5.3193, 2.7108, 1.2758, 2.7003 ] } ], "content": "2. Principal Investigator: Dr. Brian J. Eadie" }, { "spans": [ { "offset": 7765, "length": 96 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.2811, 2.8747, 6.8602, 2.894, 6.8591, 3.2104, 1.28, 3.1911 ] } ], "content": "3. Amount of Sponsored Funds : FY 79 - OMPA $2.OK, GLERL $0.8K FY 80 - OMPA $26.5K, GLERL $10.0K" }, { "spans": [ { "offset": 7862, "length": 29 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.2762, 3.3917, 3.9335, 3.3973, 3.9332, 3.5604, 1.2758, 3.5549 ] } ], "content": "4. Starting Date: 1 July 1979" }, { "spans": [ { "offset": 7892, "length": 39 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.2521, 3.7284, 4.8016, 3.7332, 4.8014, 3.8915, 1.2519, 3.8867 ] } ], "content": "5. Project Completion Date: March, 1982" }, { "spans": [ { "offset": 7932, "length": 52 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.2667, 4.0759, 5.8282, 4.0883, 5.8278, 4.2562, 1.2663, 4.2438 ] } ], "content": "6. Title : Toxic Organic Modeling in the Great Lakes" }, { "spans": [ { "offset": 7985, "length": 19 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.2541, 4.4144, 2.976, 4.4386, 2.9737, 4.6016, 1.2518, 4.5775 ] } ], "content": "7. Project Summary:" }, { "spans": [ { "offset": 8005, "length": 655 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.5935, 4.7744, 7.5268, 4.7796, 7.5253, 6.4932, 1.592, 6.4881 ] } ], "content": "This project is the essence of the overall program, in which our objective is to develop a modeling hierarchy describing the cycling, transport and fate of toxic organic compounds. The limited objectives of this project deal with the development of our first models, to calibrate and test these initial simulations and to use them to further develop the research program. Initial models will be adaptations of existing or currently developing toxic organic cycling models based on a mass balance framework and known decomposition pathways. More comprehensive cycling, transport and fate models will be developed in subsequent projects within this program." }, { "spans": [ { "offset": 8661, "length": 32 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.2621, 6.6458, 4.0963, 6.6554, 4.0957, 6.8234, 1.2615, 6.8138 ] } ], "content": "8. Results and Findings to Date:" }, { "spans": [ { "offset": 8694, "length": 684 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.5834, 7.0057, 7.8628, 7.0108, 7.8614, 8.7246, 1.582, 8.7194 ] } ], "content": "A hierarchy of three levels of models are currently being calibrated for the Great Lakes. The first of these is a simple lake scale two dimensional transport model, incorporating a first order term for removal of contaminants to the sediments. This model was successfully used by Pickett and Dossett (1979) to describe the transport and fate of Mirex in Lake Ontario. If PCB and PAH distribution can be simulated by this simple approximation, then internal cycling processes are not important to the prediction of fate. This model is expected to fail; the magnitude of its inability to simulate the fate of these contaminants will be a measure of the importance of internal processes." }, { "spans": [ { "offset": 9379, "length": 273 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 1.5925, 8.9011, 7.5258, 8.9011, 7.5258, 9.592, 1.5925, 9.592 ] } ], "content": "The EPA (Athens, Ga. ) EXAMS model, which is a steady state simulation of toxic organics in a simple ecosystem, will be calibrated as a benchmark for our more complicated time dependent simulations. This model will provide insight into the most important internal processes" }, { "spans": [ { "offset": 9653, "length": 1 } ], "boundingRegions": [ { "pageNumber": 7, "polygon": [ 4.3746, 10.4863, 4.4512, 10.4893, 4.4463, 10.6124, 4.3697, 10.6093 ] } ], "content": "5" }, { "spans": [ { "offset": 9655, "length": 96 } ], "boundingRegions": [ { "pageNumber": 8, "polygon": [ 1.6357, 1.3388, 7.1233, 1.3388, 7.1233, 1.6603, 1.6357, 1.6603 ] } ], "content": "which will be necessary to realistically simulate the cycling of toxic organics within the lake." }, { "spans": [ { "offset": 9752, "length": 173 } ], "boundingRegions": [ { "pageNumber": 8, "polygon": [ 1.6357, 1.8474, 7.1953, 1.8474, 7.1953, 2.356, 1.6357, 2.356 ] } ], "content": "The last model to be considered in this project will incorporate time dependent inputs, forcing functions and responses. A figure conceptualizing this framework is included." }, { "spans": [ { "offset": 9926, "length": 360 } ], "boundingRegions": [ { "pageNumber": 8, "polygon": [ 1.6147, 2.5288, 7.3654, 2.5539, 7.3609, 3.5695, 1.6102, 3.5444 ] } ], "content": "To date, the first and second of these models have been obtained and initial runs performed. Calibration for the Great Lakes and compounds of interest will take several months. The time dependent model is at the stage where the equations are being programmed and appropriate process coefficients are being tabulated. Initial runs are still several months away." }, { "spans": [ { "offset": 10287, "length": 13 } ], "boundingRegions": [ { "pageNumber": 8, "polygon": [ 1.2616, 3.7582, 2.467, 3.7716, 2.4656, 3.8963, 1.2602, 3.883 ] } ], "content": "9. References" }, { "spans": [ { "offset": 10301, "length": 103 } ], "boundingRegions": [ { "pageNumber": 8, "polygon": [ 1.6129, 4.1026, 7.1914, 4.141, 7.1893, 4.4507, 1.6108, 4.4123 ] } ], "content": "Pickett, R. L. and Dossett, D. (1979) Mirex and the Circulation of Lake Ontario. J. 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"offset": 11975, "length": 10 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6621, 5.5352, 5.5397, 5.54, 5.5389, 5.6886, 4.6613, 5.6838 ] } ], "content": "Desorption" }, { "spans": [ { "offset": 11986, "length": 13 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 0.7043, 5.6598, 1.8413, 5.6694, 1.8399, 5.8323, 0.703, 5.8227 ] } ], "content": "Phytoplankton" }, { "spans": [ { "offset": 12000, "length": 17 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6621, 5.6934, 6.1378, 5.6934, 6.1378, 5.8563, 4.6621, 5.8563 ] } ], "content": "Aerosol formation" }, { "spans": [ { "offset": 12018, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9721, 5.8515, 4.2308, 5.8515, 4.2308, 6.0049, 3.9721, 6.0049 ] } ], "content": "K4P" }, { "spans": [ { "offset": 12022, "length": 10 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6621, 5.8659, 5.5341, 5.8707, 5.5333, 6.0193, 4.6612, 6.0145 ] } ], "content": "Photolysis" }, { "spans": [ { "offset": 12033, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.0378, 6.0288, 3.3061, 6.0288, 3.3061, 6.1534, 3.0378, 6.1534 ] } ], "content": "K47" }, { "spans": [ { "offset": 12037, "length": 7 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6573, 6.0336, 5.2766, 6.0384, 5.2754, 6.1966, 4.656, 6.1918 ] } ], "content": "Sinking" }, { "spans": [ { "offset": 12045, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.033, 6.2014, 3.3013, 6.2014, 3.3013, 6.326, 3.033, 6.326 ] } ], "content": "K4E" }, { "spans": [ { "offset": 12049, "length": 19 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6477, 6.2109, 6.3103, 6.2205, 6.3095, 6.3691, 4.6468, 6.3595 ] } ], "content": "Metabolic excretion" }, { "spans": [ { "offset": 12069, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 2.2501, 6.3499, 2.5155, 6.3547, 2.5126, 6.5129, 2.2472, 6.5081 ] } ], "content": "K45" }, { "spans": [ { "offset": 12073, "length": 17 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6525, 6.3883, 6.1336, 6.393, 6.133, 6.556, 4.652, 6.5512 ] } ], "content": "Uptake by grazers" }, { "spans": [ { "offset": 12091, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.0234, 6.7237, 3.2821, 6.7237, 3.2821, 6.8435, 3.0234, 6.8435 ] } ], "content": "K51" }, { "spans": [ { "offset": 12095, "length": 10 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.639, 6.7189, 5.5254, 6.7237, 5.5245, 6.8915, 4.6381, 6.8867 ] } ], "content": "Desorption" }, { "spans": [ { "offset": 12106, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9769, 6.901, 4.2356, 6.9058, 4.2333, 7.0305, 3.9746, 7.0257 ] } ], "content": "K52" }, { "spans": [ { "offset": 12110, "length": 19 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6525, 6.901, 6.2973, 6.9154, 6.2959, 7.0736, 4.6511, 7.0592 ] } ], "content": "Particle disruption" }, { "spans": [ { "offset": 12130, "length": 11 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 0.6987, 7.0448, 1.6578, 7.04, 1.6587, 7.203, 0.6995, 7.2078 ] } ], "content": "Zooplankton" }, { "spans": [ { "offset": 12142, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9721, 7.0736, 4.2356, 7.0784, 4.2334, 7.203, 3.9698, 7.1982 ] } ], "content": "K53" }, { "spans": [ { "offset": 12146, "length": 33 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6485, 7.0783, 6.5555, 7.0879, 6.5539, 7.3951, 4.647, 7.3854 ] } ], "content": "Fecal pellet formation Metabolism" }, { "spans": [ { "offset": 12180, "length": 7 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 0.6564, 7.7301, 1.2985, 7.7301, 1.2985, 7.8883, 0.6564, 7.8883 ] } ], "content": "Benthos" }, { "spans": [ { "offset": 12188, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9632, 7.7492, 4.236, 7.7589, 4.2305, 7.9124, 3.9577, 7.9027 ] } ], "content": "K68" }, { "spans": [ { "offset": 12192, "length": 32 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.639, 7.7636, 6.4885, 7.7738, 6.4868, 8.0901, 4.6373, 8.08 ] } ], "content": "Release to pore water Metabolism" }, { "spans": [ { "offset": 12225, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.0186, 8.2765, 3.2869, 8.2765, 3.2869, 8.4059, 3.0186, 8.4059 ] } ], "content": "K72" }, { "spans": [ { "offset": 12229, "length": 27 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6429, 8.2812, 6.9732, 8.3052, 6.9715, 8.4682, 4.6412, 8.4442 ] } ], "content": "Small particle resuspension" }, { "spans": [ { "offset": 12257, "length": 9 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 0.6852, 8.4346, 1.4758, 8.4442, 1.4742, 8.5736, 0.6836, 8.564 ] } ], "content": "Sediments" }, { "spans": [ { "offset": 12267, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.0162, 8.4489, 3.2821, 8.4538, 3.2798, 8.5832, 3.0138, 8.5784 ] } ], "content": "K73" }, { "spans": [ { "offset": 12271, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9673, 8.6042, 4.2308, 8.6119, 4.226, 8.7749, 3.9625, 8.7671 ] } ], "content": "K76" }, { "spans": [ { "offset": 12275, "length": 56 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6343, 8.4633, 6.9725, 8.4777, 6.9695, 8.9755, 4.6312, 8.9611 ] } ], "content": "Large particle resuspension Uptake by Benthos Desorption" }, { "spans": [ { "offset": 12332, "length": 10 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 0.6852, 9.1295, 1.562, 9.1343, 1.5613, 9.2637, 0.6845, 9.2589 ] } ], "content": "Pore Water" }, { "spans": [ { "offset": 12343, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9577, 9.1439, 4.2117, 9.1439, 4.2117, 9.2781, 3.9577, 9.2781 ] } ], "content": "K81" }, { "spans": [ { "offset": 12347, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9553, 9.3164, 4.2213, 9.3212, 4.2189, 9.4506, 3.9529, 9.4458 ] } ], "content": "K87" }, { "spans": [ { "offset": 12351, "length": 38 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6381, 9.1535, 7.1392, 9.1678, 7.1373, 9.4993, 4.6362, 9.4849 ] } ], "content": "Exchange with overlying water Sorption" }, { "spans": [ { "offset": 12390, "length": 37 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 0.6862, 9.6423, 3.8667, 9.6615, 3.8657, 9.8244, 0.6852, 9.8052 ] } ], "content": "K (from compartment) (to compartment)" }, { "spans": [ { "offset": 12428, "length": 49 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 0.8529, 9.8244, 5.0461, 9.8436, 5.0454, 10.0065, 0.8521, 9.9873 ] } ], "content": "letters indicate removal to a decomposition pool." }, { "spans": [ { "offset": 12478, "length": 2 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.0831, 10.5769, 4.2356, 10.572, 4.2396, 10.6965, 4.0871, 10.7014 ] } ], "content": "11" }, { "spans": [ { "offset": 12481, "length": 15 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 0.7157, 4.4569, 1.5974, 4.4666, 1.594, 4.777, 0.7123, 4.7674 ] } ], "content": "Large Particles" }, { "spans": [ { "offset": 12497, "length": 7 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6752, 4.8403, 5.2945, 4.8547, 5.291, 5.0081, 4.6716, 4.9937 ] } ], "content": "Sinking" }, { "spans": [ { "offset": 12505, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.0261, 5.5016, 3.3086, 5.5065, 3.3059, 5.6647, 3.0234, 5.6598 ] } ], "content": "K41" }, { "spans": [ { "offset": 12509, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.0378, 5.6886, 3.3157, 5.6886, 3.3157, 5.8132, 3.0378, 5.8132 ] } ], "content": "K4A" }, { "spans": [ { "offset": 12513, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9673, 7.2413, 4.2404, 7.2413, 4.2404, 7.3659, 3.9673, 7.3659 ] } ], "content": "K5M" }, { "spans": [ { "offset": 12517, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9607, 7.5719, 4.2288, 7.5768, 4.2259, 7.7398, 3.9577, 7.7349 ] } ], "content": "K61" }, { "spans": [ { "offset": 12521, "length": 16 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.6477, 7.5959, 6.0435, 7.6103, 6.042, 7.7541, 4.6462, 7.7397 ] } ], "content": "Release to water" }, { "spans": [ { "offset": 12538, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9625, 7.9362, 4.2404, 7.9362, 4.2404, 8.0656, 3.9625, 8.0656 ] } ], "content": "K6M" }, { "spans": [ { "offset": 12542, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.9577, 8.7988, 4.2213, 8.7988, 4.2213, 8.9282, 3.9577, 8.9282 ] } ], "content": "K78" }, { "spans": [ { "offset": 12546, "length": 6 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 0.7427, 3.0863, 1.1691, 3.0863, 1.1691, 3.2109, 0.7427, 3.2109 ] } ], "content": "Sma 11" }, { "spans": [ { "offset": 12553, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 3.0882, 1.5526, 3.354, 1.5575, 3.3515, 1.6918, 3.0857, 1.6869 ] } ], "content": "K13" }, { "spans": [ { "offset": 12557, "length": 8 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.7063, 1.5767, 5.4106, 1.5815, 5.4095, 1.7396, 4.7052, 1.7348 ] } ], "content": "Sorption" }, { "spans": [ { "offset": 12566, "length": 3 } ], "boundingRegions": [ { "pageNumber": 13, "polygon": [ 4.0248, 1.9122, 4.2931, 1.9122, 4.2931, 2.0368, 4.0248, 2.0368 ] } ], "content": "K15" }, { "spans": [ { "offset": 12570, "length": 27 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 3.67, 1.2269, 4.9588, 1.2412, 4.9551, 1.5749, 3.6663, 1.5606 ] } ], "content": "Progress Report April, 1980" }, { "spans": [ { "offset": 12598, "length": 67 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.2793, 1.7263, 6.7517, 1.7588, 6.7499, 2.0597, 1.2775, 2.0272 ] } ], "content": "1. Organization: Great Lakes Environmental Research Laboratory NOAA" }, { "spans": [ { "offset": 12666, "length": 47 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 2.8799, 2.0943, 5.1273, 2.1002, 5.1265, 2.4166, 2.8791, 2.4106 ] } ], "content": "2300 Washtenaw Avenue Ann Arbor, Michigan 48104" }, { "spans": [ { "offset": 12714, "length": 45 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.2516, 2.583, 5.2904, 2.6119, 5.2893, 2.7723, 1.2504, 2.7435 ] } ], "content": "2. Principal Investigator: Dr. Brian J. Eadie" }, { "spans": [ { "offset": 12760, "length": 94 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.2514, 2.9233, 6.7555, 2.9569, 6.7535, 3.2852, 1.2494, 3.2516 ] } ], "content": "3. Amount of Sponsored Funds: FY 79 - OMPA $22.OK, GLERL $4.0K FY 80 - OMPA $50K, GLERL $12.2K" }, { "spans": [ { "offset": 12855, "length": 30 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.2601, 3.4445, 4.0109, 3.4553, 4.0102, 3.623, 1.2595, 3.6122 ] } ], "content": "4. Starting Date: 1 July, 1980" }, { "spans": [ { "offset": 12886, "length": 41 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.2557, 3.7898, 4.9354, 3.8004, 4.9349, 3.9633, 1.2552, 3.9527 ] } ], "content": "5. Project Completion Date: October, 1981" }, { "spans": [ { "offset": 12928, "length": 72 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.251, 4.1278, 7.5946, 4.1502, 7.594, 4.3224, 1.2504, 4.3001 ] } ], "content": "6. Title: Polynuclear Aromatic Hydrocarbons in the Great Lakes Ecosystem" }, { "spans": [ { "offset": 13001, "length": 19 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.2509, 4.4844, 2.9567, 4.4905, 2.9561, 4.6438, 1.2504, 4.6378 ] } ], "content": "7. Project Summary:" }, { "spans": [ { "offset": 13021, "length": 30 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.5811, 4.8259, 4.1539, 4.8259, 4.1539, 4.9937, 1.5811, 4.9937 ] } ], "content": "This project has 2 objectives;" }, { "spans": [ { "offset": 13052, "length": 124 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.5859, 5.1662, 7.1584, 5.1806, 7.1576, 5.508, 1.585, 5.4936 ] } ], "content": "to develop analytical capability to accurately quantitate various PAH's in different parts of the Great Lakes ecosystem, and" }, { "spans": [ { "offset": 13177, "length": 77 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.5859, 5.679, 7.2442, 5.679, 7.2442, 6.0097, 1.5859, 6.0097 ] } ], "content": "to quantify the levels of selected PAH in parts of the Great Lakes ecosystem." }, { "spans": [ { "offset": 13255, "length": 624 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.5766, 6.1966, 7.7484, 6.2017, 7.7472, 7.7404, 1.5753, 7.7352 ] } ], "content": "The polycyclic or polynuclear aromatic hydrocarbons are a family of compounds composed of 2 or more condensed benzene rings with occasional incorporations of cyclopentene rings (fluorenes) or hetero atoms N or S. These compounds are products of incomplete combustion of fossil fuels and a large number of the class are known or suspected carcinogens. It is perceived that concentrations of these materials will be high in the industrialized regions of the Great Lakes such as southeastern Lake Michigan. Concentrations of the PAH's and their removal mechanisms are unavailable for virtually all of the Great Lakes ecosystem." }, { "spans": [ { "offset": 13880, "length": 375 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.5667, 7.9218, 7.4071, 7.9218, 7.4071, 8.9522, 1.5667, 8.9522 ] } ], "content": "Several published extraction and analytical techniques will be examined and evaluated for analyzing the PAH's in various ecological matrices. Intercalibration exercises with the NMFS/NOAA Seattle laboratory (Bill Macleod) and the University of Minnesota will be conducted. Those techniques selected as yielding best results will be employed to conduct the following analyses:" }, { "spans": [ { "offset": 14256, "length": 49 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 1.5763, 9.1295, 5.8548, 9.1295, 5.8548, 9.2972, 1.5763, 9.2972 ] } ], "content": ". Distribution of PAH's in Great Lakes sediments;" }, { "spans": [ { "offset": 14306, "length": 2 } ], "boundingRegions": [ { "pageNumber": 14, "polygon": [ 4.3408, 10.5528, 4.5085, 10.5528, 4.5085, 10.6679, 4.3408, 10.6679 ] } ], "content": "12" }, { "spans": [ { "offset": 14309, "length": 293 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 2.2899, 1.2412, 7.0825, 1.2652, 7.0774, 2.2893, 2.2847, 2.2653 ] } ], "content": "Samples of sediment from deposition zones in Lakes Erie, Huron and Michigan will be collected and analyzed. Sediments from Lake Superior will be supplied by Dr. Steve Eisenreich of Minnesota. These will be combined with existing analyses of Lake Ontario sediments to produce a first order map." }, { "spans": [ { "offset": 14603, "length": 46 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 1.6147, 2.4441, 5.6156, 2.4537, 5.6151, 2.631, 1.6143, 2.6214 ] } ], "content": ". Atmospheric loading of PAH to Lake Michigan;" }, { "spans": [ { "offset": 14650, "length": 190 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 2.2807, 2.7988, 7.0913, 2.7988, 7.0913, 3.4505, 2.2807, 3.4505 ] } ], "content": "Atmospheric particulates will be collected aboard the RV SHENEHON, by U of M investigators aboard their vessels and at selected land sites. These will be shared and analyzed for PAH and PCB." }, { "spans": [ { "offset": 14841, "length": 72 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 1.6051, 3.632, 6.9097, 3.647, 6.9088, 3.9872, 1.6042, 3.9722 ] } ], "content": ". Partitioning of PAH among selected compartments of the lake ecosystem;" }, { "spans": [ { "offset": 14914, "length": 85 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 2.2715, 4.1598, 7.4222, 4.1694, 7.4216, 4.4963, 2.2709, 4.4866 ] } ], "content": "Samples of plankton, benthic organisms, fish and particulate matter will be analyzed." }, { "spans": [ { "offset": 15000, "length": 1 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 7.8148, 4.3467, 7.8581, 4.35, 7.8532, 4.4138, 7.8099, 4.4105 ] } ], "content": ";" }, { "spans": [ { "offset": 15002, "length": 32 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 1.2554, 4.6713, 4.0685, 4.6822, 4.0679, 4.8355, 1.2548, 4.8246 ] } ], "content": "8. Results and Findings to Date:" }, { "spans": [ { "offset": 15035, "length": 461 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 1.5759, 5.008, 7.4767, 5.0326, 7.4717, 6.2274, 1.571, 6.2028 ] } ], "content": "Thus far we have set up and evaluated 2 extraction techniques which give us satisfactory yields. We are currently using a methelyene chloride soxhelet extraction followed by clean up on Sepehadex LH 20. Our samples are spiked with C-14 labelled benzo-a-pyrene and yields are calculated based on the measured extract. Another, simpler clean up procedure is currently being evaluated which employs a molecular size fractionation on a Waters micro particil column." }, { "spans": [ { "offset": 15497, "length": 337 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 1.5719, 6.3882, 7.7482, 6.3937, 7.7474, 7.2563, 1.5711, 7.2509 ] } ], "content": "The PAH compounds are being successfully analyzed by both glass capillary gas chromatography, which yields good results for the lower molecular weight compounds and on high performance liquid chromatography which yields best results with the high molecular weight analogs. Technique development and evaluation have been our major effort." }, { "spans": [ { "offset": 15835, "length": 150 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 1.572, 7.4234, 7.5757, 7.4378, 7.5744, 7.9506, 1.5708, 7.9362 ] } ], "content": "During the past field season, sediments, lake ecosystem and atmospheric particulate samples were collected in Lake Erie, Huron, Michigan and Superior." }, { "spans": [ { "offset": 15986, "length": 64 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 1.5716, 8.1135, 7.0483, 8.1183, 7.0482, 8.286, 1.5714, 8.2812 ] } ], "content": "A summary of the initial results from Western Lake Erie follows:" }, { "spans": [ { "offset": 16051, "length": 2 } ], "boundingRegions": [ { "pageNumber": 15, "polygon": [ 4.389, 10.5528, 4.5567, 10.5528, 4.5567, 10.6727, 4.389, 10.6727 ] } ], "content": "13" }, { "spans": [ { "offset": 16054, "length": 67 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 3.7285, 0.4648, 7.3757, 0.4696, 7.375, 0.9883, 3.7278, 0.9835 ] } ], "content": "CONCENTRATION OF PAH IN LAKE ERIE SEDIMENTS (Units: Microgram/gram)" }, { "spans": [ { "offset": 16122, "length": 23 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 4.3659, 1.2314, 6.3355, 1.2314, 6.3355, 1.3656, 4.3659, 1.3656 ] } ], "content": "1 Km offshore of Monroe" }, { "spans": [ { "offset": 16146, "length": 21 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.6295, 1.2218, 9.4123, 1.2218, 9.4123, 1.356, 7.6295, 1.356 ] } ], "content": "10 Km Offshore Monroe" }, { "spans": [ { "offset": 16168, "length": 15 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4521, 1.4231, 2.7269, 1.4231, 2.7269, 1.5764, 1.4521, 1.5764 ] } ], "content": "Compound (ugkg)" }, { "spans": [ { "offset": 16184, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 3.762, 1.4135, 4.548, 1.4135, 4.548, 1.5428, 3.762, 1.5428 ] } ], "content": "Sediments" }, { "spans": [ { "offset": 16194, "length": 11 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 5.564, 1.4087, 6.5224, 1.4087, 6.5224, 1.5428, 5.564, 1.5428 ] } ], "content": ">600 micron" }, { "spans": [ { "offset": 16206, "length": 3 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 6.5991, 1.4039, 6.8435, 1.4039, 6.8435, 1.5476, 6.5991, 1.5476 ] } ], "content": "(1)" }, { "spans": [ { "offset": 16210, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.2748, 1.3943, 8.052, 1.3991, 8.0512, 1.5285, 7.274, 1.5237 ] } ], "content": "Sediments" }, { "spans": [ { "offset": 16220, "length": 15 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 8.5544, 1.3751, 9.8394, 1.3799, 9.8388, 1.538, 8.5538, 1.5333 ] } ], "content": ">600 micron (1)" }, { "spans": [ { "offset": 16236, "length": 10 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4377, 1.768, 2.3195, 1.768, 2.3195, 1.9262, 1.4377, 1.9262 ] } ], "content": "Napthelene" }, { "spans": [ { "offset": 16247, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 4.0256, 1.7632, 4.1981, 1.7632, 4.1981, 1.883, 4.0256, 1.883 ] } ], "content": "60" }, { "spans": [ { "offset": 16250, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 5.5783, 1.7489, 5.7413, 1.7489, 5.7413, 1.8734, 5.5783, 1.8734 ] } ], "content": "16" }, { "spans": [ { "offset": 16253, "length": 3 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 6.6039, 1.7201, 6.8339, 1.7201, 6.8339, 1.8974, 6.6039, 1.8974 ] } ], "content": "(2)" }, { "spans": [ { "offset": 16257, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.2701, 1.7345, 8.0512, 1.7345, 8.0512, 1.8734, 7.2701, 1.8734 ] } ], "content": "213 + 152" }, { "spans": [ { "offset": 16267, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 9.072, 1.7393, 9.2493, 1.7345, 9.2527, 1.859, 9.0754, 1.8638 ] } ], "content": "17" }, { "spans": [ { "offset": 16270, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4617, 1.9357, 2.1326, 1.9357, 2.1326, 2.0939, 1.4617, 2.0939 ] } ], "content": "Bipheny 1" }, { "spans": [ { "offset": 16280, "length": 5 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 3.7656, 1.9405, 4.2736, 1.9357, 4.2748, 2.0603, 3.7668, 2.0651 ] } ], "content": "147 +" }, { "spans": [ { "offset": 16286, "length": 3 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 4.27, 1.9166, 4.5528, 1.9166, 4.5528, 2.0699, 4.27, 2.0699 ] } ], "content": "130" }, { "spans": [ { "offset": 16290, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 5.57, 1.9263, 5.7413, 1.9214, 5.7448, 2.0458, 5.5735, 2.0507 ] } ], "content": "18" }, { "spans": [ { "offset": 16293, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.2748, 1.9022, 8.0512, 1.9022, 8.0512, 2.0459, 7.2748, 2.0459 ] } ], "content": "50.4 + 62" }, { "spans": [ { "offset": 16303, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 9.0816, 1.907, 9.2445, 1.907, 9.2445, 2.0268, 9.0816, 2.0268 ] } ], "content": "18" }, { "spans": [ { "offset": 16306, "length": 8 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4569, 2.1226, 2.1422, 2.1226, 2.1422, 2.2472, 1.4569, 2.2472 ] } ], "content": "Fluorene" }, { "spans": [ { "offset": 16315, "length": 7 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 3.8291, 2.0891, 4.4521, 2.0891, 4.4521, 2.252, 3.8291, 2.252 ] } ], "content": "68 + 98" }, { "spans": [ { "offset": 16323, "length": 3 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 5.6598, 2.0939, 5.9138, 2.0939, 5.9138, 2.2232, 5.6598, 2.2232 ] } ], "content": "1.7" }, { "spans": [ { "offset": 16327, "length": 7 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.2785, 2.0747, 7.8787, 2.0699, 7.8798, 2.2088, 7.2796, 2.2136 ] } ], "content": "32 + 42" }, { "spans": [ { "offset": 16335, "length": 1 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 9.163, 2.0747, 9.2445, 2.0747, 9.2445, 2.1993, 9.163, 2.1993 ] } ], "content": "2" }, { "spans": [ { "offset": 16337, "length": 12 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4569, 2.2903, 2.4872, 2.2903, 2.4872, 2.4245, 1.4569, 2.4245 ] } ], "content": "Phenanthrene" }, { "spans": [ { "offset": 16350, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 3.7668, 2.252, 4.5528, 2.252, 4.5528, 2.4197, 3.7668, 2.4197 ] } ], "content": "460 + 620" }, { "spans": [ { "offset": 16360, "length": 7 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 5.5688, 2.2616, 6.1691, 2.2471, 6.1726, 2.3909, 5.5722, 2.4053 ] } ], "content": "31 + 25" }, { "spans": [ { "offset": 16368, "length": 7 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.2653, 2.2376, 7.8835, 2.2376, 7.8835, 2.4005, 7.2653, 2.4005 ] } ], "content": "30 + 46" }, { "spans": [ { "offset": 16376, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 9.0768, 2.2424, 9.2445, 2.2424, 9.2445, 2.3718, 9.0768, 2.3718 ] } ], "content": "33" }, { "spans": [ { "offset": 16379, "length": 11 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4521, 2.4628, 2.4058, 2.4628, 2.4058, 2.597, 1.4521, 2.597 ] } ], "content": "Anthrocenes" }, { "spans": [ { "offset": 16391, "length": 8 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 3.8387, 2.4245, 4.5528, 2.4245, 4.5528, 2.597, 3.8387, 2.597 ] } ], "content": "80 + 113" }, { "spans": [ { "offset": 16400, "length": 3 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 5.6694, 2.4293, 5.9234, 2.4293, 5.9234, 2.5682, 5.6694, 2.5682 ] } ], "content": "1.9" }, { "spans": [ { "offset": 16404, "length": 8 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.2692, 2.4293, 7.965, 2.4245, 7.9658, 2.5538, 7.2701, 2.5586 ] } ], "content": "8.3 + 12" }, { "spans": [ { "offset": 16413, "length": 1 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 9.163, 2.4245, 9.2493, 2.4245, 9.2493, 2.5395, 9.163, 2.5395 ] } ], "content": "2" }, { "spans": [ { "offset": 16415, "length": 13 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4569, 2.6305, 2.5783, 2.6305, 2.5783, 2.7694, 1.4569, 2.7694 ] } ], "content": "Fluoranthrene" }, { "spans": [ { "offset": 16429, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 3.7572, 2.6065, 4.5528, 2.6065, 4.5528, 2.7742, 3.7572, 2.7742 ] } ], "content": "674 + 974" }, { "spans": [ { "offset": 16439, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 5.5735, 2.6161, 5.7461, 2.6161, 5.7461, 2.7359, 5.5735, 2.7359 ] } ], "content": "20" }, { "spans": [ { "offset": 16442, "length": 7 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.2785, 2.6017, 7.8776, 2.5969, 7.8787, 2.7359, 7.2796, 2.7407 ] } ], "content": "31 + 35" }, { "spans": [ { "offset": 16450, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 9.0707, 2.592, 9.2493, 2.597, 9.2458, 2.7217, 9.0672, 2.7167 ] } ], "content": "20" }, { "spans": [ { "offset": 16453, "length": 6 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4617, 2.8126, 2.0032, 2.8126, 2.0032, 2.9515, 1.4617, 2.9515 ] } ], "content": "Pyrene" }, { "spans": [ { "offset": 16460, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 3.7572, 2.779, 4.5576, 2.779, 4.5576, 2.9419, 3.7572, 2.9419 ] } ], "content": "304 + 362" }, { "spans": [ { "offset": 16470, "length": 7 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 5.5615, 2.7791, 6.1845, 2.7695, 6.187, 2.9324, 5.564, 2.9419 ] } ], "content": "20 + 18" }, { "spans": [ { "offset": 16478, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.2836, 2.7742, 8.056, 2.7694, 8.0568, 2.9036, 7.2844, 2.9084 ] } ], "content": "105 + 175" }, { "spans": [ { "offset": 16488, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 9.0768, 2.7647, 9.2493, 2.7647, 9.2493, 2.8844, 9.0768, 2.8844 ] } ], "content": "20" }, { "spans": [ { "offset": 16491, "length": 14 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4569, 2.9851, 2.6652, 2.9899, 2.6646, 3.1384, 1.4563, 3.1336 ] } ], "content": "Benzo a pyrene" }, { "spans": [ { "offset": 16506, "length": 3 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 3.762, 2.9611, 4.0304, 2.9611, 4.0304, 3.1192, 3.762, 3.1192 ] } ], "content": "357" }, { "spans": [ { "offset": 16510, "length": 5 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 4.0304, 2.9515, 4.548, 2.9515, 4.548, 3.1144, 4.0304, 3.1144 ] } ], "content": "+ 457" }, { "spans": [ { "offset": 16516, "length": 3 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 5.5783, 2.9419, 5.909, 2.9419, 5.909, 3.1001, 5.5783, 3.1001 ] } ], "content": "35." }, { "spans": [ { "offset": 16520, "length": 9 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 7.2509, 2.9276, 8.056, 2.9276, 8.056, 3.0905, 7.2509, 3.0905 ] } ], "content": "88. + 145" }, { "spans": [ { "offset": 16530, "length": 3 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 9.0768, 2.9467, 9.3116, 2.9467, 9.3116, 3.0665, 9.0768, 3.0665 ] } ], "content": "35." }, { "spans": [ { "offset": 16534, "length": 98 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4801, 3.4834, 9.1678, 3.445, 9.1694, 3.7645, 1.4817, 3.8028 ] } ], "content": "(1) >600 micron fraction contains both benthos and debris, the fine sediments having been removed." }, { "spans": [ { "offset": 16633, "length": 106 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 1.4798, 4.0009, 9.4304, 3.9529, 9.4324, 4.2798, 1.4818, 4.3277 ] } ], "content": "(2) A third sample collected from the same location yielded microgram/gram quantities of the measured PAH." }, { "spans": [ { "offset": 16740, "length": 2 } ], "boundingRegions": [ { "pageNumber": 16, "polygon": [ 0.393, 4.3842, 0.5128, 4.3842, 0.5128, 4.5614, 0.393, 4.5614 ] } ], "content": "14" }, { "spans": [ { "offset": 16743, "length": 223 } ], "boundingRegions": [ { "pageNumber": 17, "polygon": [ 1.979, 1.2476, 7.3799, 1.2773, 7.3761, 1.9567, 1.9753, 1.9269 ] } ], "content": "The coefficients of variation for standards are below 10% for all compounds on both the GC and the LC. Results in the table indicate there is a large sampling plus handling error involved in the analysis of these compounds." }, { "spans": [ { "offset": 16967, "length": 276 } ], "boundingRegions": [ { "pageNumber": 17, "polygon": [ 1.9669, 2.1113, 7.3737, 2.1226, 7.372, 2.9719, 1.9652, 2.9606 ] } ], "content": "These samples were collected off the Monroe, Michigan power plant, one of the largest coal fired power plants in the world. Raw results presented indicate that concentrations nearshore are nearly an order of magnitude higher but the benthos are not accumulating the materials." }, { "spans": [ { "offset": 17244, "length": 2 } ], "boundingRegions": [ { "pageNumber": 17, "polygon": [ 4.3553, 10.5901, 4.5279, 10.5901, 4.5279, 10.7101, 4.3553, 10.7101 ] } ], "content": "15" }, { "spans": [ { "offset": 17247, "length": 29 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 3.7559, 0.5758, 5.0618, 0.5854, 5.0594, 0.9159, 3.7535, 0.9063 ] } ], "content": "Progress Report February 1980" }, { "spans": [ { "offset": 17277, "length": 123 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 0.9795, 1.4203, 5.757, 1.4491, 5.7529, 2.1254, 0.9754, 2.0966 ] } ], "content": "1. Organization: Great Lakes and Marine Waters Center University of Michigan 2200 Bonisteel Blvd. Ann Arbor, Michigan 48109" }, { "spans": [ { "offset": 17401, "length": 17 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 0.9893, 2.3032, 2.5388, 2.3176, 2.5375, 2.4538, 0.988, 2.4394 ] } ], "content": "2. Investigators:" }, { "spans": [ { "offset": 17419, "length": 37 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.4103, 2.6509, 4.9701, 2.6631, 4.9695, 2.8167, 1.4098, 2.8044 ] } ], "content": "Dr. Alfred M. Beeton Project Director" }, { "spans": [ { "offset": 17457, "length": 43 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.4103, 2.825, 5.4932, 2.8455, 5.4924, 2.999, 1.4096, 2.9785 ] } ], "content": "Dr. Clifford P. Rice Principal Investigator" }, { "spans": [ { "offset": 17501, "length": 40 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.4103, 3.1814, 5.7565, 3.1909, 5.7562, 3.3445, 1.4099, 3.3349 ] } ], "content": "Dr. W.J. Weber Co-Principal Investigator" }, { "spans": [ { "offset": 17542, "length": 43 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.4199, 3.3541, 5.7565, 3.3637, 5.7562, 3.5172, 1.4195, 3.5077 ] } ], "content": "Dr. M. S. Simmons Co-Principal Investigator" }, { "spans": [ { "offset": 17586, "length": 38 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.4103, 3.5268, 5.747, 3.5364, 5.7466, 3.69, 1.41, 3.6804 ] } ], "content": "Dr. D.K. Rea Co-Principal Investigator" }, { "spans": [ { "offset": 17625, "length": 39 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.4151, 3.6996, 5.7518, 3.7092, 5.7514, 3.8675, 1.4147, 3.8579 ] } ], "content": "Dr. R.M. Owen Co-Principal Investigator" }, { "spans": [ { "offset": 17665, "length": 42 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.4103, 3.8819, 5.7514, 3.8819, 5.7514, 4.0355, 1.4103, 4.0355 ] } ], "content": "Dr. G.A. Meadows Co-Principal Investigator" }, { "spans": [ { "offset": 17708, "length": 43 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.4103, 4.0307, 5.7274, 4.0307, 5.7274, 4.1746, 1.4103, 4.1746 ] } ], "content": "Dr. Nathan Hawley Co-Principal Investigator" }, { "spans": [ { "offset": 17752, "length": 38 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 0.9738, 4.2082, 4.4563, 4.2082, 4.4563, 4.3762, 0.9738, 4.3762 ] } ], "content": "3. Amount of Sponsored Funds: $259,311" }, { "spans": [ { "offset": 17791, "length": 29 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 0.9834, 4.5729, 3.6792, 4.5729, 3.6792, 4.7216, 0.9834, 4.7216 ] } ], "content": "4. Starting Date: 1 July 1979" }, { "spans": [ { "offset": 17821, "length": 53 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 0.9786, 4.9136, 5.737, 4.9136, 5.737, 5.0815, 0.9786, 5.0815 ] } ], "content": "5. Project completion date: 30 June 1979 (first year)" }, { "spans": [ { "offset": 17875, "length": 78 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 0.9884, 5.2622, 7.9055, 5.2735, 7.9052, 5.4366, 0.9881, 5.4253 ] } ], "content": "6. Title: The Cycling of Toxic Organic Substances in the Great Lakes Ecosystem" }, { "spans": [ { "offset": 17954, "length": 21 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 0.9786, 5.6094, 2.707, 5.6286, 2.7053, 5.7786, 0.9769, 5.7594 ] } ], "content": "7. . Project Summary:" }, { "spans": [ { "offset": 17976, "length": 1064 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.2913, 5.9745, 8.143, 5.8981, 8.1724, 8.5322, 1.3207, 8.6087 ] } ], "content": "This research project is the administrative structure for implementa- tion of the cooperative NOAA/University of Michigan study of the Cycling of Toxic Organic Substances in the Great Lakes Ecosystem. PCBs and PAHs are identified for initial emphasis in this study. The project has been divided into separate tasks. The tasks identify activities and individuals within both the NOAA/Great Lakes Environmental Laboratory and the University of Michigan. The specific activities involve model implementation and/or conceptualization on the movement of PCBs and PAHs with special consideration being given to the photodecomposition and sorption onto particulates. Specific studies on the movement within the Great Lakes stress the exchange of PCBs and PAHs at the air/water interface and their transport on particles in the water column. It is the purpose of this project to coordinate the University of Michigan tasks into a common purpose that complements the ongoing toxic organic cycling activities of the Great Lakes Environmental Research Labora- tory personnel." }, { "spans": [ { "offset": 19041, "length": 32 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 0.9881, 8.7859, 3.8471, 8.7859, 3.8471, 8.9347, 0.9881, 8.9347 ] } ], "content": "8. Results and Findings to date:" }, { "spans": [ { "offset": 19074, "length": 395 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 1.3238, 9.1404, 8.17, 9.0761, 8.1797, 10.1131, 1.3335, 10.1774 ] } ], "content": "By making use of the combined ship facilities of the two organizations this last sampling season it has been possible to sample the Great Lakes more extensively than might have been possible otherwise. The laboratory facilities and highly trained labor force available through the University has greatly expanded the capabilities for NOAA and the University to carry out a sophisti- cated study." }, { "spans": [ { "offset": 19470, "length": 2 } ], "boundingRegions": [ { "pageNumber": 18, "polygon": [ 4.2584, 10.4797, 4.4275, 10.4845, 4.4239, 10.6093, 4.2548, 10.6045 ] } ], "content": "16" }, { "spans": [ { "offset": 19473, "length": 31 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 3.6326, 0.8384, 5.0029, 0.8434, 5.0017, 1.1744, 3.6314, 1.1693 ] } ], "content": "Progress Report . February 1980" }, { "spans": [ { "offset": 19505, "length": 143 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 0.987, 1.6678, 5.0994, 1.7109, 5.0905, 2.5661, 0.9781, 2.523 ] } ], "content": "1. Organization: Great Lakes Research Division The University of Michigan I.S.T. Bldg. Room 3114 2200 Bonisteel Blvd. Ann Arbor, Michigan 48109" }, { "spans": [ { "offset": 19649, "length": 47 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 0.9775, 2.7157, 5.185, 2.7358, 5.1842, 2.894, 0.9768, 2.8739 ] } ], "content": "2. Principal Investigator: Dr. Clifford P. Rice" }, { "spans": [ { "offset": 19697, "length": 37 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 0.9776, 3.0719, 4.3173, 3.0767, 4.3171, 3.231, 0.9774, 3.2262 ] } ], "content": "3. Amount of Sponsored Funds: $65,971" }, { "spans": [ { "offset": 19735, "length": 29 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 0.9775, 3.4122, 3.6415, 3.4122, 3.6415, 3.5703, 0.9775, 3.5703 ] } ], "content": "4. Starting Date: 1 July 1979" }, { "spans": [ { "offset": 19765, "length": 53 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 0.9788, 3.7256, 5.6778, 3.7668, 5.6763, 3.9394, 0.9773, 3.8981 ] } ], "content": "5. Project completion date: 30 June 1980 (first year)" }, { "spans": [ { "offset": 19819, "length": 95 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 0.9736, 4.0808, 6.8853, 4.1215, 6.883, 4.4474, 0.9714, 4.4068 ] } ], "content": "6. Title: Atmospheric Transfer of Polynuclear Aromatic Hydrocarbons and PCBs to the Great Lakes" }, { "spans": [ { "offset": 19915, "length": 19 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 0.9688, 4.608, 2.6604, 4.6199, 2.6592, 4.7876, 0.9676, 4.7757 ] } ], "content": "7. Project Summary:" }, { "spans": [ { "offset": 19935, "length": 822 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 1.2988, 4.964, 7.7273, 4.9773, 7.7231, 7.015, 1.2946, 7.0017 ] } ], "content": "The purpose of this project is to describe the transfer of PCBs and PAHs at the air/water interface of the Great Lakes. Field sampling is being conducted to accurately measure their concentration and specific chemical makeup in this compartment. Special emphasis is being directed toward collecting the particulates in the samples so that the particulate associations of the PCBs and PAHs can be measured. Atmospheric fallout (rain, gaseous, and particulate) of PAHs and PCBs are also being measured in the field. Laboratory studies will be conducted using *C - labeled PAHs and PCBs to study the distillation/votalilization processes of these chemicals in a wind/wave tank system. A model will be developed which will allow prediction of the processes involved in the transfer of PCBs and PAHs at the air/water interface." }, { "spans": [ { "offset": 20758, "length": 32 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 0.9639, 7.1964, 3.7852, 7.2125, 3.7844, 7.3611, 0.963, 7.345 ] } ], "content": "8. Results and Findings to date:" }, { "spans": [ { "offset": 20791, "length": 852 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 1.2938, 7.5525, 8.3045, 7.5577, 8.303, 9.4463, 1.2924, 9.441 ] } ], "content": "We have completed analyses of our open lake atmospheric collections for PCBs and related residues. The average concentration of PCBs (Aroclor 1242 plus Aroglor 1254) for 8 Lake Michigan collections, Aug. 21 to Sept. 19 were 3.3 ng/m with the amount of A-1242 about 2.3 times higher than the A-1254 in the samples. Lake Superior was sampled in late October; the 3 samples averaged 0.15 ng/m with 2.8 times more A-1242 than A-1254. Other chlorinated hydrocar- bon residues were measured along with the PCBs; these included lindane, chlordane, dieldrin, Toxaphene, HCB and alpha-BHC. The overall average concentration of chlordane (cis plus trans isomer) was 0.17 ng/m for the 5 samples collected in Lake Michigan. 9.3% of the chlordane residues were retained on the prefilter in the collection system, however, none of the PCBs were found on the filters." }, { "spans": [ { "offset": 21644, "length": 154 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 1.3131, 9.6321, 8.1507, 9.6417, 8.1502, 9.9634, 1.3127, 9.9538 ] } ], "content": "Air and total fallout (rain plus dryfall) were collected from a fixed site on the southwestern shore of Lake Michigan. The samples were winter collections" }, { "spans": [ { "offset": 21799, "length": 2 } ], "boundingRegions": [ { "pageNumber": 19, "polygon": [ 4.3842, 10.8212, 4.5519, 10.8212, 4.5519, 10.9458, 4.3842, 10.9458 ] } ], "content": "17" }, { "spans": [ { "offset": 21802, "length": 31 } ], "boundingRegions": [ { "pageNumber": 20, "polygon": [ 5.1361, 0.1534, 7.8144, 0.1534, 7.8144, 0.3211, 5.1361, 0.3211 ] } ], "content": "page two - Progress Report/Rice" }, { "spans": [ { "offset": 21834, "length": 84 } ], "boundingRegions": [ { "pageNumber": 20, "polygon": [ 1.3636, 0.8339, 7.54, 0.7533, 7.5443, 1.0808, 1.3679, 1.1614 ] } ], "content": "which may account for their low values, e.g. air - 0.78 ng/m and rain - 3 49.0 ng/1." }, { "spans": [ { "offset": 21919, "length": 647 } ], "boundingRegions": [ { "pageNumber": 20, "polygon": [ 1.3696, 1.3446, 8.0524, 1.3767, 8.045, 2.902, 1.3623, 2.8699 ] } ], "content": "Surface micro-layer samples were collected with a metal screen sampler during August of 1979. The samples were filtered and separate PCB analyses carried out on the two fractions. The overall surface micro-layer concentra- tion of PCBs was 20.8 ng/1 for the 12 samples completed to date. The particu- late portion of these samples contained about 6 times more total PCB than the dissolved phase. The A-1242 to A-1254 ratio averaged 1:1. The concentration of PCBs on particulates in the subsurface water for this cruise averaged about 1 ng/1 therefore there is a significant enrichment of PCBs on the particles contained in the surface micro-layer." }, { "spans": [ { "offset": 22567, "length": 410 } ], "boundingRegions": [ { "pageNumber": 20, "polygon": [ 1.3517, 3.0658, 8.2951, 3.0876, 8.2919, 4.0987, 1.3485, 4.0769 ] } ], "content": "A framework for analyzing air/water mass transfer has been developed by reviewing the mechanisms of pollutant volatilization, dissolution and aero- solization. Preliminary relationships are being investigated to predict transfer rates in terms of pertinent properties of the pollutant and readily measurable indicators of environmental turbulence such as wind speed at 10 meters and air and water temperatures." }, { "spans": [ { "offset": 22978, "length": 2 } ], "boundingRegions": [ { "pageNumber": 20, "polygon": [ 4.3935, 10.5337, 4.566, 10.5289, 4.5693, 10.6487, 4.3968, 10.6535 ] } ], "content": "18" }, { "spans": [ { "offset": 22981, "length": 30 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 3.6826, 0.4747, 4.9283, 0.494, 4.9231, 0.8291, 3.6774, 0.8099 ] } ], "content": "Project Report (February 1980)" }, { "spans": [ { "offset": 23012, "length": 138 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.6955, 1.1337, 6.1105, 1.1568, 6.1076, 1.8521, 0.6925, 1.8289 ] } ], "content": "1. Organization: The University of Michigan Dept. of Environmental and Industrial Health School of Public Health Ann Arbor, Michigan 48109" }, { "spans": [ { "offset": 23151, "length": 90 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.69, 2.0015, 7.6959, 2.0416, 7.694, 2.3808, 0.6881, 2.3407 ] } ], "content": "2. Principal Investigator: Milagros S. Simmons, Asst. Professor of Environmental Chemistry" }, { "spans": [ { "offset": 23242, "length": 37 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.6813, 2.5091, 4.0402, 2.5305, 4.0392, 2.6887, 0.6803, 2.6672 ] } ], "content": "3. Amount of Sponsored Funds: $30,306" }, { "spans": [ { "offset": 23280, "length": 29 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.6756, 2.8556, 3.3636, 2.8611, 3.3632, 3.0336, 0.6753, 3.0281 ] } ], "content": "4. Starting Date: 1 July 1979" }, { "spans": [ { "offset": 23310, "length": 53 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.6668, 3.1946, 5.3952, 3.2205, 5.3942, 3.393, 0.6659, 3.3671 ] } ], "content": "5. Project completion date: 30 June 1980 (first year)" }, { "spans": [ { "offset": 23364, "length": 99 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.6756, 3.5462, 6.934, 3.5799, 6.9322, 3.91, 0.6739, 3.8763 ] } ], "content": "6. Title: Photochemical Degradation and Transformation Studies of Toxic Organics in the Great Lakes" }, { "spans": [ { "offset": 23464, "length": 19 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.6708, 4.0569, 2.3813, 4.0687, 2.3802, 4.2365, 0.6697, 4.2246 ] } ], "content": "7. Project Summary:" }, { "spans": [ { "offset": 23484, "length": 833 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.9954, 4.4024, 8.0142, 4.4312, 8.0065, 6.3116, 0.9877, 6.2828 ] } ], "content": "The overall objective of this research proposal is to conduct studies on the photochemical degradation of toxic organics and to determine the role of this process in their transformation and fate in the Great Lakes. Poly -. nuclear aromatics (PNA) and polychlorinated biphenyls (PCB) will be irradiated under different UV sources (Fluorescent lamps, sunlamps, UV reactor, and natural sunlight). Variations in the experimental design will include studies of PNA and different pure isomers of PCB and the effects of suspended particles on their photodegradation rates. The photolysis rates of these compounds under different conditions will be calculated, their photolytic products will be identified by gas chromatography/mass spectrometry techniques, and estimates of their photolysis half-lives in natural waters will be determined." }, { "spans": [ { "offset": 24318, "length": 32 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.6612, 6.4643, 3.5028, 6.4697, 3.5025, 6.6327, 0.6609, 6.6273 ] } ], "content": "8. Results and Findings to date:" }, { "spans": [ { "offset": 24351, "length": 644 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.9925, 6.8142, 7.677, 6.8233, 7.6749, 8.367, 0.9904, 8.3579 ] } ], "content": "Experimental set-ups for the fluorescent, sunlamp, and natural sunlight irradiations have been completed. A UV reactor system has been chosen and tested to carry out the degradation experiments. The methodology for the kinetic experiments and the identification of photolytic products have been established. Preliminary experiments using pure isomers of PCB in homogeneous systems have been conducted to evaluate the different UV irradiation set-ups. In this preliminary study, no significant. degradation of PCB isomers was observed when using the fluorescent light as the source of radiation compared to using the sunlamps and the UV reactor." }, { "spans": [ { "offset": 24996, "length": 582 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 0.9923, 8.5342, 7.8505, 8.5513, 7.8471, 9.9397, 0.9888, 9.9226 ] } ], "content": "Experiments using Arochlor 1254 (PCB) in water, irradiated under GE sunlamps were conducted. The results show that without stirring, disappearance with time of the higher isomers was more pronounced than that of the lower isomers. With stirring, the lower isomers disappeared at a fast rate. In both cases, a marked difference in the disappearance rate of the PCB in the light flask vs. the dark flask (wrapped in foil) was observed. The bulk of the remaining solution at the end of the experiments have been concentrated and submitted for GC-MS analysis of the photolytic products." }, { "spans": [ { "offset": 25579, "length": 2 } ], "boundingRegions": [ { "pageNumber": 21, "polygon": [ 4.3027, 10.6151, 4.4656, 10.6151, 4.4656, 10.7397, 4.3027, 10.7397 ] } ], "content": "19" }, { "spans": [ { "offset": 25582, "length": 310 } ], "boundingRegions": [ { "pageNumber": 22, "polygon": [ 0.9993, 0.466, 7.4296, 0.3892, 7.4396, 1.2284, 1.0093, 1.3052 ] } ], "content": "Subsequent photolysis experiments under sunlamp irradiation were con- ducted using 2,3,6,2',3',6' hexachlorobiphenyl (HCB) in water. Variation of temperature, light intensity (to simulate depth conditions in the lake) and the use of filtered and unfiltered Lake Michigan water are currently being investigated." }, { "spans": [ { "offset": 25893, "length": 750 } ], "boundingRegions": [ { "pageNumber": 22, "polygon": [ 1.0048, 1.4887, 7.6117, 1.4718, 7.6165, 3.3499, 1.0095, 3.3668 ] } ], "content": "Experiments using a photochemical reactor equipped with a 450-watt Hanovia immersion lamp, were also conducted. Variation in the rate of oxy- genation and the concentration level of the pure HCB isomer using distilled water were investigated. Likewise, photolysis experiments using the 2,3,6, 2',3',6' hexachlorobiphenyl in filtered and unfiltered Lake Michigan water have been conducted. Samples taken at time intervals are currenlty being analyzed by GC-EC and the concentrated samples of the remaining solution after each experiment (distilled water media only) have been submitted for GC-MS analysis of the photolytic products. A statistical analysis of the variation of these measurements have also been considered and included in these studies." }, { "spans": [ { "offset": 26644, "length": 2 } ], "boundingRegions": [ { "pageNumber": 22, "polygon": [ 4.46, 10.6045, 4.6194, 10.6093, 4.6156, 10.7341, 4.4563, 10.7293 ] } ], "content": "20" }, { "spans": [ { "offset": 26647, "length": 17 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 5.7928, 0.5655, 7.5369, 0.5799, 7.5356, 0.7381, 5.7915, 0.7237 ] } ], "content": "29 February, 1980" }, { "spans": [ { "offset": 26665, "length": 21 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 3.3348, 0.9058, 5.4966, 0.9201, 5.4958, 1.0495, 3.334, 1.0352 ] } ], "content": "BRIEF PROGRESS REPORT" }, { "spans": [ { "offset": 26687, "length": 180 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 1.1884, 1.3883, 7.3272, 1.4281, 7.3216, 2.2847, 1.1828, 2.2448 ] } ], "content": "1. Organization: Dept. of Civil Engineering, Environmental and Water Resources Engineering Program 181 Engineering 1-A Building The University of Michigan Ann Arbor, Michigan 48109" }, { "spans": [ { "offset": 26868, "length": 151 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 1.1512, 2.4153, 8.4261, 2.4728, 8.4208, 3.143, 1.1459, 3.0855 ] } ], "content": "2. Principal Investigator: Walter J. Weber, Jr., Prof. of Environmental and Water Resources Engrg., and Chairman, University Program in Water Resources" }, { "spans": [ { "offset": 27020, "length": 31 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 1.1658, 3.2749, 4.5231, 3.3067, 4.5215, 3.4745, 1.1642, 3.4427 ] } ], "content": "3. Amount: $37,017 (first year)" }, { "spans": [ { "offset": 27052, "length": 30 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 1.1598, 3.632, 4.4467, 3.6374, 4.4464, 3.8028, 1.1595, 3.7973 ] } ], "content": "4. Starting Date: 1 July, 1979" }, { "spans": [ { "offset": 27083, "length": 56 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 1.1463, 3.9562, 7.0866, 3.9975, 7.0853, 4.179, 1.145, 4.1378 ] } ], "content": "5. Projected Completion Date: 30 June, 1980 (first year)" }, { "spans": [ { "offset": 27140, "length": 91 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 1.1464, 4.3038, 7.4184, 4.3515, 7.4158, 4.6953, 1.1437, 4.6477 ] } ], "content": "6. Title: Particle Dynamics and Related Pollutant Transport in Tributary River-Lake Systems" }, { "spans": [ { "offset": 27232, "length": 413 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 1.1507, 4.8238, 8.0225, 4.8572, 8.0158, 6.2278, 1.144, 6.1944 ] } ], "content": "7. Summary : Development of a modeling framework for description and prediction of the transport of solids and solids- .associated pollutants from riverine to lacustrine systems. Particle dynamics -- including aggregation and settling phenomena -- transport, and differential accumulation in local shear planes will be described. Laboratory and field data will be collected for model calibration and verification." }, { "spans": [ { "offset": 27646, "length": 618 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 1.1459, 6.3764, 8.3267, 6.4176, 8.3149, 8.4677, 1.1341, 8.4264 ] } ], "content": "8. Results/Findings to. Date: Major findings to date on this project derive from the analysis of data obtained in the fall sampling survey on the Huron River. These data appear to reinforce earlier convictions regarding the role of flocculation in effecting particle growth, especially within the cohesive fraction of suspended solids and sediment materials. Since this fraction has been previously identified as the predominant vector in riverine to lacustrine transport of toxic substance, this finding puts us one step closer to the ultimate description of toxic pollutant transport in the Great Lakes Basin (GLB) ." }, { "spans": [ { "offset": 28265, "length": 405 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 2.5505, 8.6357, 8.3156, 8.652, 8.3117, 10.0326, 2.5466, 10.0162 ] } ], "content": "An ever more important conclusion drawn from this effort, however, is the ability to describe both flocculant energy and degree of turbulent mixing with some relatively simple field measurements. These measurements which will be coupled with laboratory data to be derived this summer, will enable us to circumvent a problem that has consistently prevented the development of a generalized transport model." }, { "spans": [ { "offset": 28671, "length": 2 } ], "boundingRegions": [ { "pageNumber": 23, "polygon": [ 4.3554, 10.481, 4.5231, 10.481, 4.5231, 10.6056, 4.3554, 10.6056 ] } ], "content": "21" }, { "spans": [ { "offset": 28674, "length": 597 } ], "boundingRegions": [ { "pageNumber": 24, "polygon": [ 2.5902, 1.0088, 8.149, 1.0316, 8.1406, 3.0771, 2.5818, 3.0543 ] } ], "content": "a total conservation approach is feasible. been missed in a larger system and convinced us that that they have identified forces which might have Our preliminary studies have been very valuable in and principles of conservation of momentum and mass. by studies which are solidly based upon the concepts and precepts. This task will only be brought about complete characterization of the controlling variables GLB will never be accomplished until there is a transport in the complex aquatic environment of the results is the realization that modeling of pollutant A corollary to the above mentioned" }, { "spans": [ { "offset": 29272, "length": 2 } ], "boundingRegions": [ { "pageNumber": 24, "polygon": [ 4.3842, 10.548, 4.5519, 10.548, 4.5519, 10.6679, 4.3842, 10.6679 ] } ], "content": "22" }, { "spans": [ { "offset": 29275, "length": 62 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 1.0112, 0.7671, 6.3871, 0.8321, 6.3851, 0.9969, 1.0092, 0.9318 ] } ], "content": "Summary of NOAA - LRERP subprogram. Six month progress report," }, { "spans": [ { "offset": 29338, "length": 13 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 1.0062, 1.1214, 2.1095, 1.131, 2.1082, 1.2796, 1.0049, 1.27 ] } ], "content": "Organization:" }, { "spans": [ { "offset": 29352, "length": 98 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 1.4247, 1.3083, 5.2952, 1.3275, 5.2929, 1.8105, 1.4223, 1.7913 ] } ], "content": "Department of Atmospheric and Oceanic Science The University of Michigan Ann Arbor, Michigan 48109" }, { "spans": [ { "offset": 29451, "length": 24 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 1.0014, 1.9745, 3.049, 1.9984, 3.0474, 2.1422, 0.9997, 2.1182 ] } ], "content": "Principal Investigators:" }, { "spans": [ { "offset": 29476, "length": 58 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 1.4135, 2.1566, 6.3838, 2.2093, 6.3822, 2.3579, 1.4119, 2.3051 ] } ], "content": "Professors Robert M. Owen, David K. Rea and Guy A. Meadows" }, { "spans": [ { "offset": 29535, "length": 49 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 0.9845, 2.4798, 4.4178, 2.5335, 4.4128, 2.8551, 0.9795, 2.8014 ] } ], "content": "Amount and duration: $49,953.00 7/1/79 to 6/30/80" }, { "spans": [ { "offset": 29585, "length": 6 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 0.9775, 3.0096, 1.4901, 3.0144, 1.489, 3.1343, 0.9763, 3.1295 ] } ], "content": "Title:" }, { "spans": [ { "offset": 29592, "length": 92 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 1.4075, 3.1773, 6.8821, 3.2397, 6.8785, 3.5608, 1.4039, 3.4984 ] } ], "content": "\"A flux model for suspended particulates and associated chemical substances in large lakes.\"" }, { "spans": [ { "offset": 29685, "length": 19 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 0.9646, 3.6757, 2.5745, 3.6901, 2.573, 3.8627, 0.9631, 3.8483 ] } ], "content": "Summary of Project:" }, { "spans": [ { "offset": 29705, "length": 1128 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 0.9607, 3.8477, 7.563, 3.9393, 7.5275, 6.4988, 0.9252, 6.4072 ] } ], "content": "We intend to determine the physical and chemical nature, and spatial and temporal distribution of suspended particulates in our region of study. Combining this information with seasonal and annual synoptic current data, to be compiled by other research groups, will lead to an understanding of the tranpsort of the suspended materials and any toxic substances adsorbed onto them. To ascertain the long-term effects of anthropogenic compounds we will also study, in conjunction with GLERL, the materials now accumulating on the lake floor and compare them to both the present suspended materials and to the underlying, pre-settlement, sediments. Goals of the first year of the project are to: 1) establish operational shipboard and laboratory pro- cedures for sampling and analyzing suspended materials; 2) determine the geological and geochemical nature of both the suspended materials and the top few centimeters of bottom sediments; and 3) determine the various hydraulic parameters (concentration, size, type of particles) to establish calibration and correlation standards for existing and newly-constructed optical sensors." }, { "spans": [ { "offset": 30834, "length": 37 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 0.9295, 6.6135, 4.1172, 6.6423, 4.1158, 6.7956, 0.9282, 6.7668 ] } ], "content": "Significant results/findings to date:" }, { "spans": [ { "offset": 30872, "length": 575 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 0.9216, 6.7868, 7.5816, 6.8493, 7.5689, 8.2045, 0.9089, 8.142 ] } ], "content": "The Flux Model project which began August 1, 1979, has achieved several important goals as of February 29, 1980. The first year's field work was carried out on board the NOAA Ship Shenehon in August. We occupied six stations along a transect across Lake Michigan at approximately 43\u00b0N latitude. At each station transmissivity and temperature profiles were measured, and large-volume, 12 liters, water samples, surface sediment samples, and where possible, sediment core samples were taken. We encountered no undue diffi- culties with using our sampling gear off the Shenehon." }, { "spans": [ { "offset": 31448, "length": 735 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 0.9094, 8.333, 7.6774, 8.4118, 7.6574, 10.1285, 0.8894, 10.0496 ] } ], "content": "All samples were returned to our laboratories for analysis. We have established the necessary laboratory procedures and sample analysis is going smoothly. In the laboratory, one liter of each well-mixed, 12-liter sample was drawn off for use with the laser polar-nephelometer being de- signed and built by Dr. Meadows. The remaining lake water was filtered through 0.45u Millipore filters and the total concentration of suspended material determined. Concentrations range from 1.05 to 2.40 mg/1 with one unusually low value of 0.31 mg/1. A trans-lake profile of concentrations shows a maximum along the thermocline (1.74 to 2.40 mg/1), the clearest water at mid-depth (1.05 to 1.42 mg/1) and moderate concentrations (1.80 to 2.09 mg/1)" }, { "spans": [ { "offset": 32184, "length": 2 } ], "boundingRegions": [ { "pageNumber": 25, "polygon": [ 4.3315, 10.4474, 4.5039, 10.4474, 4.5039, 10.5672, 4.3315, 10.5672 ] } ], "content": "23" }, { "spans": [ { "offset": 32187, "length": 101 } ], "boundingRegions": [ { "pageNumber": 26, "polygon": [ 0.9925, 0.7716, 7.5848, 0.787, 7.5841, 1.0985, 0.9918, 1.0831 ] } ], "content": "along the bottom. This is the expected distribution of suspended material in a large stratified lake." }, { "spans": [ { "offset": 32289, "length": 1157 } ], "boundingRegions": [ { "pageNumber": 26, "polygon": [ 0.9752, 1.2867, 7.7471, 1.3241, 7.732, 4.0442, 0.9602, 4.0068 ] } ], "content": "At the University of Michigan the Flux Model project is subdivided into three efforts: physical and optical limnology, chemical and geochemical limnology, and geological limnology. A major effort of this year's work in physical and optical limnology is to design, build, and test a laser polar nephelometer for determining the in-situ nature of the suspended particles. The design of this instrument is predicated upon the physics of electromagnetic, or Mie scattering of particles which are large in com- parison to the wavelength of the incident radiation. Previous studies of the Mie scattering characteristics of particles have indicated that an ensemble of randomly oriented, poly-dispersed particles scatter electromagnetic radiation in a manner similar to that of spheres of the mean radius of the distribution. Our nephelometer is designed to image the scattered radiation from a scattering volume of 1 mm3 which, for typical concentrations of suspended particulates in the Great Lakes, should contain about one hundred particles. The nephelometer will sense and record scattered light at 5.0 increments from 0\u00b0 to 180\u00ba around the scattering volume." }, { "spans": [ { "offset": 33447, "length": 650 } ], "boundingRegions": [ { "pageNumber": 26, "polygon": [ 0.9454, 4.2014, 7.6245, 4.2235, 7.6195, 5.7393, 0.9404, 5.7172 ] } ], "content": "Concurrent with the design and construction phase of the nephelometer, theoretical calculations of Mie scattering intensity have been completed. Numerical simulations of the interaction of incident radiation with spherical particles of various demensions and indices of refraction have been completed. These calculations are based on an index. of refraction of water to the particulates of 1.100 and particle radii of 1, 10, and 27 u, respectively. Through comparison of experimentally determined volume scattering functions from known Great Lake samples with theoretical distributions for the same size particles the nephelometer will be calibrated." }, { "spans": [ { "offset": 34098, "length": 412 } ], "boundingRegions": [ { "pageNumber": 26, "polygon": [ 0.9394, 5.8987, 7.7812, 5.9106, 7.7794, 6.937, 0.9376, 6.925 ] } ], "content": "At present all design and machining of the nephelometer has been completed. Assembly of the components is approximately 50% complete. Theoretical Mie scattering distributions for the size ranges of suspended particulates from our Lake Michigan samples are approximately 80% complete. Calibration of the completed instrument is scheduled for early March, 1980 and analysis of test samples to begin in April, 1980." }, { "spans": [ { "offset": 34511, "length": 596 } ], "boundingRegions": [ { "pageNumber": 26, "polygon": [ 0.9363, 7.1094, 7.7964, 7.1495, 7.7884, 8.5178, 0.9283, 8.4777 ] } ], "content": "The chemical and geochemical analyses conducted for this project include atomic-absorption spectrophotometry analyses of the lake water (filtrate) , suspended sediments (filtered residue), and bottom sediments. The filtrate was analyzed for Cr, Fe, Mn, Ca, K, Mg, and Na in all 34 samples and the available phase of these same elements, plus Ca, was determined in the residue. Surface and near-surface sediment samples have been analyzed for available phase elements, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn as well as for phosphorus, sulfide, and total organic carbon and inorganic carbon." }, { "spans": [ { "offset": 35108, "length": 605 } ], "boundingRegions": [ { "pageNumber": 26, "polygon": [ 0.9333, 8.6617, 7.871, 8.7122, 7.861, 10.0857, 0.9233, 10.0352 ] } ], "content": "Analysis and interpretation of the chemical/geochemical data is still in progress. Thus far the following significant findings have been noted: 1) There is a significant depletion of Ca, Mg, Fe, and Mn and an enrichment of Cr in the suspended material relative to the surface sediments. This suggests dilution of carbonates by biogenic material in the suspended matter and mobilization of Fe, Mn, and Cr in the bottom sediments. 2) Concentrations of Mn in the particulate phase increase linearly with depth. This trend suggests scavenging of dissolved Mn in surface (< 45 m) and relatively rapid transport" }, { "spans": [ { "offset": 35714, "length": 2 } ], "boundingRegions": [ { "pageNumber": 26, "polygon": [ 4.3025, 10.6679, 4.4749, 10.6679, 4.4749, 10.7925, 4.3025, 10.7925 ] } ], "content": "24" }, { "spans": [ { "offset": 35717, "length": 729 } ], "boundingRegions": [ { "pageNumber": 27, "polygon": [ 0.9861, 0.6421, 7.6736, 0.6985, 7.6593, 2.3998, 0.9717, 2.3434 ] } ], "content": "of fine-grained, Mn-rich particles to subsurface waters. The increase in particulate Mn concentrations is more pronounced than that observed for Fe. As this trend is opposite that expected on the basis of the relative oxidation rates of these metals, it is probable that the removal of Mn from solution involves a phase (MnCO3?) other than oxides. 3) An inverse relationship exists between the Ca/Mg ratio of the suspended particulates and the dissolved Mg concentration. Moreover, Ca/Mg ratios of surface (< 45m) particulates are significantly higher than for those in deeper water. These data suggest either preferential removal of clay minerals by aggregates and/or formation of a MgCO3 phase on the surface of the carbonates." }, { "spans": [ { "offset": 36447, "length": 614 } ], "boundingRegions": [ { "pageNumber": 27, "polygon": [ 0.9602, 2.5287, 7.6516, 2.5541, 7.6459, 4.0653, 0.9545, 4.04 ] } ], "content": "The geological effort has concentrated on analyses of the physical nature of the suspended and bottom sediments. Materials recovered from suspension on the filters were inspected by scanning electron microscopy and by optical microscopy. These examinations show the suspended material in Lake Michigan to be dominated by diatioms (perhaps 70-90%) with lesser amounts of mineral grains. Not enough of the mineral component was recovered on the filters to allow x-ray diffraction techniques to be used for quantitative mineral determinations. We are planning to begin optical mineral identification . in March, 1980." }, { "spans": [ { "offset": 37062, "length": 521 } ], "boundingRegions": [ { "pageNumber": 27, "polygon": [ 0.9401, 4.2325, 7.7249, 4.3086, 7.7117, 5.4913, 0.9269, 5.4152 ] } ], "content": "The lake-floor surface sediments we sampled fall into two categories, those presently accumulating and outcrops of Pleistocene glacial clays. Modern sediments are fine silts or silty clays (70 to 90 modal size) and have a mineralogy averaging 50% quartz, 22% dolomite, 10% calcite, 14% feld- spar, and 4% clay minerals. These sediments undergo a rapid reduction in porosity from 85% at the surface to 55% at a depth of 7 cm. At a sedimentation rate of 1 mm/y this corresponds to a dewatering rate of perhaps 50 g/cm -. y." }, { "spans": [ { "offset": 37584, "length": 1 } ], "boundingRegions": [ { "pageNumber": 27, "polygon": [ 7.8288, 4.3084, 7.8767, 4.3084, 7.8767, 4.3755, 7.8288, 4.3755 ] } ], "content": ":" }, { "spans": [ { "offset": 37586, "length": 348 } ], "boundingRegions": [ { "pageNumber": 27, "polygon": [ 0.9415, 5.6101, 7.5424, 5.6557, 7.5366, 6.4864, 0.9358, 6.4409 ] } ], "content": "\u00b7 The relict, periglacial deposits were encountered at stations 3 and 4 on the mid-lake high. They are clay sized (90 to 100) with a sandy lag deposit on top. Mineralogy of the fine-grained fraction reveals about 85% quartz, 7% feldspar, 5% clay minerals, and 3% dolomite. Porosity remains constant throughout the top several cm of these sediments." }, { "spans": [ { "offset": 37935, "length": 455 } ], "boundingRegions": [ { "pageNumber": 27, "polygon": [ 0.9323, 6.6405, 7.4428, 6.6671, 7.4381, 7.8381, 0.9275, 7.8116 ] } ], "content": "Piston cores of the lake-floor sediment recovered at stations 1,2, and 5 have been opened, described, and sampled for geological and geochemical analysis. These downcore samples will provide evidence upon the history of fluctuations in the limnological and geochemical nature of Lake Michigan. Samples sent off for C-14 age dating should be analyzed by Arpil, 1980, and will allow us to determine the timing; and rates of events recorded in the sediments." }, { "spans": [ { "offset": 38391, "length": 2 } ], "boundingRegions": [ { "pageNumber": 27, "polygon": [ 4.4031, 10.5672, 4.566, 10.5672, 4.566, 10.6822, 4.4031, 10.6822 ] } ], "content": "25" }, { "spans": [ { "offset": 38394, "length": 30 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 2.8605, 0.6613, 5.7506, 0.6757, 5.7486, 1.0803, 2.8585, 1.0659 ] } ], "content": "Project Report-February 1980 -" }, { "spans": [ { "offset": 38425, "length": 105 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 1.0254, 1.1406, 7.5863, 1.1981, 7.5818, 1.7131, 1.0209, 1.6556 ] } ], "content": "1. Organization: Department of Atmospheric and Oceanic Science University of Michigan Ann Arbor, MI 48109" }, { "spans": [ { "offset": 38531, "length": 55 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 1.0206, 1.8353, 5.4348, 1.8739, 5.4318, 2.215, 1.0176, 2.1763 ] } ], "content": "2. Principal Investigator: Guy A. Meadows Nathan Hawley" }, { "spans": [ { "offset": 38587, "length": 38 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 1.021, 2.3612, 5.0172, 2.3756, 5.0166, 2.5385, 1.0204, 2.5241 ] } ], "content": "3. Amount of Sponsored Funds : $33,911" }, { "spans": [ { "offset": 38626, "length": 33 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 1.0165, 2.6977, 4.6055, 2.7173, 4.6046, 2.8802, 1.0156, 2.8606 ] } ], "content": "4. Starting Date: October 1, 1979" }, { "spans": [ { "offset": 38660, "length": 46 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 0.9934, 3.026, 5.9428, 3.0719, 5.9412, 3.2473, 0.9917, 3.2014 ] } ], "content": "5. Project Completion Date: September 30, 1979" }, { "spans": [ { "offset": 38707, "length": 64 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 1.0071, 3.3757, 7.7728, 3.4218, 7.7716, 3.5931, 1.006, 3.547 ] } ], "content": "6. Project Title: Modelling Particle Dynamics in the Great Lakes" }, { "spans": [ { "offset": 38772, "length": 20 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 1.0022, 3.726, 3.034, 3.7381, 3.033, 3.9154, 1.0012, 3.9034 ] } ], "content": "7. Project Summary :" }, { "spans": [ { "offset": 38793, "length": 871 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 0.9805, 4.0707, 8.0816, 4.118, 8.0657, 6.5005, 0.9647, 6.4533 ] } ], "content": "Many lake pollutants absorb on clay mineral particles suspended in the water column and are transported with these particles. In order to accurately predict the ultimate depositional site (s) of these pollutants, the transport and depositional behavior of the clay particles must be known. Because of their small size and high electric charge, the clay particles tend to a) remain in the water column for considerable lengths of time and b) form into large porous aggregates. The presence of these aggregates makes a prediction of transport depositional characteristics based on simple particle parameters, such as grain size and density, impossible. We are attempting to develop a one-dimensional numerical model of sediment aggregation and disaggregation in a non-uniform shear flow in order to better predict the transport and depositional behavior of these sediments." }, { "spans": [ { "offset": 39665, "length": 32 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 0.974, 6.639, 4.3663, 6.6662, 4.365, 6.8339, 0.9726, 6.8067 ] } ], "content": "8. Results and Findings to Date:" }, { "spans": [ { "offset": 39698, "length": 1100 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 0.9673, 6.9947, 8.1796, 7.0214, 8.1688, 9.9613, 0.9564, 9.9346 ] } ], "content": "1) Examination of suspended particles by SEM reveals the presence of considerable numbers of aggregates, particularly near the bottom. in order to determine whether or not the particles behave as non-cohesive sediments (implying aggregation prior to reaching the lake) or as cohesive sediments (implying aggregation in the lake itself), an analysis of particle size distribution as a function of height above the bottom was performed. The results clearly indicate that the measured size distributions vary significantly from those predicted using a non-cohesive model. Many of the samples show a pattern that suggests aggregation within the bottom 2 meters, while other samples suggest disaggregation in this zone 2) An extensive literature review of particle aggregation and rupture has been completed. While the basic mechanisms of particle collision are well known, the efficiency of these collisions in producing larger particles is unclear, particularly in the present case, where the relative effects of hydrodynamic and electrical forces have not been accurately determined. Even less is known" }, { "spans": [ { "offset": 40799, "length": 2 } ], "boundingRegions": [ { "pageNumber": 28, "polygon": [ 4.2692, 10.5001, 4.4369, 10.5001, 4.4369, 10.6247, 4.2692, 10.6247 ] } ], "content": "26" }, { "spans": [ { "offset": 40802, "length": 90 } ], "boundingRegions": [ { "pageNumber": 29, "polygon": [ 1.0707, 0.6565, 7.5369, 0.738, 7.5328, 1.0688, 1.0666, 0.9872 ] } ], "content": "about the shear strength of the aggregates, which governs their susceptibility to rupture." }, { "spans": [ { "offset": 40893, "length": 328 } ], "boundingRegions": [ { "pageNumber": 29, "polygon": [ 1.0513, 0.9967, 7.6265, 1.0722, 7.6149, 2.0804, 1.0397, 2.005 ] } ], "content": "3) We have developed a one-dimensional numerical model of particle dynamics including terms for particle aggregation and rupture. Preliminary results suggest that the efficiency of particle collisions in producing new particles is considerably less than 100%, and that the shear strength of the particles has been overestimated." }, { "spans": [ { "offset": 41222, "length": 2 } ], "boundingRegions": [ { "pageNumber": 29, "polygon": [ 4.3689, 10.6007, 4.5279, 10.6056, 4.524, 10.735, 4.365, 10.7302 ] } ], "content": "27" }, { "spans": [ { "offset": 41225, "length": 29 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 3.6942, 0.7668, 5.0023, 0.7812, 4.9987, 1.1057, 3.6906, 1.0914 ] } ], "content": "Progress Report February 1980" }, { "spans": [ { "offset": 41255, "length": 145 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 0.9152, 1.6184, 5.0315, 1.6342, 5.0283, 2.4691, 0.912, 2.4533 ] } ], "content": "1. Organization: Great Lakes Research Division The University of Michigan I. S. T. Bldg. Room 3114 2200 Bonisteel Blvd. Ann Arbor, Michigan 48109" }, { "spans": [ { "offset": 41401, "length": 47 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 0.9014, 2.6454, 5.1036, 2.6694, 5.1028, 2.8096, 0.9006, 2.7856 ] } ], "content": "2. Principal Investigator: Dr. Clifford P. Rice" }, { "spans": [ { "offset": 41449, "length": 37 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 0.8873, 2.9664, 4.2318, 2.9856, 4.2308, 3.1486, 0.8864, 3.1294 ] } ], "content": "3. Amount of Sponsored Funds: $32,800" }, { "spans": [ { "offset": 41487, "length": 29 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 0.8917, 3.3197, 3.5511, 3.3307, 3.5505, 3.4889, 0.8911, 3.4778 ] } ], "content": "4. Starting Date: 1 July 1979" }, { "spans": [ { "offset": 41517, "length": 53 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 0.8827, 3.6448, 5.5927, 3.6758, 5.5916, 3.8435, 0.8816, 3.8125 ] } ], "content": "5. Project completion date: 30 June 1980 (first year)" }, { "spans": [ { "offset": 41571, "length": 80 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 0.9008, 4.003, 7.916, 4.0304, 7.9154, 4.1838, 0.9002, 4.1564 ] } ], "content": "6. Title: Sorption studies of Toxic Organics on Great Lakes Particulate Material" }, { "spans": [ { "offset": 41652, "length": 19 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 0.8937, 4.3419, 2.5826, 4.3707, 2.58, 4.5193, 0.8912, 4.4905 ] } ], "content": "7. Project Summary:" }, { "spans": [ { "offset": 41672, "length": 324 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 1.2188, 4.7098, 7.6584, 4.7264, 7.6563, 5.5441, 1.2167, 5.5275 ] } ], "content": "The objective of this project is to describe a range of partition coefficients for PAHs and PCBs for representative particulate materials found in Lake Michigan. Laboratory experimentation will be used to develop numerical formulations for partitioning of these materials as a function of measurable environmental variables." }, { "spans": [ { "offset": 41997, "length": 32 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 0.8773, 5.7255, 3.6942, 5.7365, 3.6937, 5.8755, 0.8768, 5.8645 ] } ], "content": "8. Results and Findings to date:" }, { "spans": [ { "offset": 42030, "length": 158 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 1.2203, 6.0836, 7.924, 6.0516, 7.9264, 6.5432, 1.2226, 6.5752 ] } ], "content": "None. We have been delayed in not being able to identify a suitable individual to carry out this study. We are now planning to fill this position in May 1980." }, { "spans": [ { "offset": 42189, "length": 2 } ], "boundingRegions": [ { "pageNumber": 30, "polygon": [ 4.3171, 10.6104, 4.4848, 10.6104, 4.4848, 10.7397, 4.3171, 10.7397 ] } ], "content": "28" }, { "spans": [ { "offset": 42192, "length": 15 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 3.6661, 0.7658, 4.944, 0.7658, 4.944, 0.8855, 3.6661, 0.8855 ] } ], "content": "PROGRESS REPORT" }, { "spans": [ { "offset": 42208, "length": 12 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 3.7618, 1.0961, 4.7573, 1.0961, 4.7573, 1.254, 3.7618, 1.254 ] } ], "content": "(April 1980)" }, { "spans": [ { "offset": 42221, "length": 1 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 0.359, 1.838, 0.4355, 1.8431, 0.4307, 1.9145, 0.3542, 1.9094 ] } ], "content": "1" }, { "spans": [ { "offset": 42223, "length": 156 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.0529, 1.771, 6.6343, 1.7858, 6.6326, 2.4277, 1.0512, 2.4129 ] } ], "content": "1. Organization: Great Lakes Environmental Research Laboratory National Oceanic and Atmospheric Administration 2300 Washtenaw Ave. Ann Arbor, Michigan 48104" }, { "spans": [ { "offset": 42380, "length": 42 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.0532, 2.6079, 4.7672, 2.6164, 4.7669, 2.7552, 1.0529, 2.7467 ] } ], "content": "2. Principle Investigator: John R. Bennett" }, { "spans": [ { "offset": 42423, "length": 108 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.0298, 2.9244, 7.1129, 2.9544, 7.1113, 3.2905, 1.0281, 3.2605 ] } ], "content": "3. Amount of Sponsored Funds: FY 1979- $13.5 K (OMPA); $5 K (GLERL) FY 1980- $44.0 K (OMPA); $14.4 K (GLERL)" }, { "spans": [ { "offset": 42532, "length": 30 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.0386, 3.451, 3.757, 3.451, 3.757, 3.6137, 1.0386, 3.6137 ] } ], "content": "4. Starting Date: July 1, 1979" }, { "spans": [ { "offset": 42563, "length": 27 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.0341, 3.7812, 3.3888, 3.786, 3.3885, 3.9392, 1.0338, 3.9344 ] } ], "content": "5. Project Completion Date:" }, { "spans": [ { "offset": 42591, "length": 56 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.0482, 4.1283, 5.935, 4.1402, 5.9347, 4.2885, 1.0478, 4.2766 ] } ], "content": "6. Title: Modeling Particle Dynamics in the Great Lakes." }, { "spans": [ { "offset": 42648, "length": 19 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.0434, 4.4705, 2.7101, 4.4848, 2.7089, 4.6209, 1.0422, 4.6066 ] } ], "content": "7. Project Summary:" }, { "spans": [ { "offset": 42668, "length": 606 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.32, 4.6284, 7.9753, 4.653, 7.9704, 5.9882, 1.315, 5.9636 ] } ], "content": "The purpose of this project is to develop mathematical models describing the transport of particles in the Great Lakes. This will be accomplished in three steps. First, a one-dimensional model describing the vertical distribu- tion of particles of various size classes will be developed and verified against field observations. Second, existing two- and three-dimensional mod- els of the currents and temperature distribution in lakes will be modified to predict sediment concentration also. Finally, the first two steps will be combined to give a model which can be used to simulate the fate of particles." }, { "spans": [ { "offset": 43275, "length": 32 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.0343, 6.1457, 3.8006, 6.1552, 3.8001, 6.3036, 1.0338, 6.2941 ] } ], "content": "8. Results and findings to date:" }, { "spans": [ { "offset": 43308, "length": 399 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 1.3512, 6.3363, 8.0556, 6.3519, 8.0534, 7.3226, 1.349, 7.307 ] } ], "content": "In collaboration with Nathan Hawley of the University of Michigan we have programmed a one-dimensional model which describes the effects of sinking, ver- tical diffusion, particle aggregation and particle rupture on the vertical pro- file of sediments. We are comparing the results with data collected by GLERL in Lake Michigan. We have also made progress in modifying the three-dimension- al model." }, { "spans": [ { "offset": 43708, "length": 2 } ], "boundingRegions": [ { "pageNumber": 31, "polygon": [ 4.2356, 10.4534, 4.4032, 10.4534, 4.4032, 10.5779, 4.2356, 10.5779 ] } ], "content": "29" }, { "spans": [ { "offset": 43711, "length": 25 } ], "boundingRegions": [ { "pageNumber": 32, "polygon": [ 6.8088, 0.2886, 7.8482, 0.2886, 7.8482, 0.38, 6.8088, 0.38 ] } ], "content": "GLERL LIBRARY - Ann Arbor" }, { "spans": [ { "offset": 43737, "length": 17 } ], "boundingRegions": [ { "pageNumber": 32, "polygon": [ 6.6067, 0.6783, 8.0503, 0.6783, 8.0503, 0.8178, 6.6067, 0.8178 ] } ], "content": "5 0778 01000188 1" }, { "spans": [ { "offset": 43755, "length": 31 } ], "boundingRegions": [ { "pageNumber": 32, "polygon": [ 3.2321, 2.5635, 5.3314, 2.7249, 5.2963, 3.1815, 3.1971, 3.02 ] } ], "content": "TD 427 .07 The cycling of toxic" }, { "spans": [ { "offset": 43787, "length": 24 } ], "boundingRegions": [ { "pageNumber": 32, "polygon": [ 3.1914, 2.9298, 5.5507, 2.987, 5.5445, 3.2425, 3.1852, 3.1854 ] } ], "content": "G7 organic substances in" }, { "spans": [ { "offset": 43812, "length": 33 } ], "boundingRegions": [ { "pageNumber": 32, "polygon": [ 3.1692, 3.0908, 5.9227, 3.1681, 5.9144, 3.4638, 3.1609, 3.3865 ] } ], "content": "Apr 80 the Great Lakes ecosystem." }, { "spans": [ { "offset": 43846, "length": 33 } ], "boundingRegions": [ { "pageNumber": 32, "polygon": [ 3.811, 3.2663, 5.9304, 3.4592, 5.9008, 3.7845, 3.7814, 3.5916 ] } ], "content": "First semiannual progress report." }, { "spans": [ { "offset": 43880, "length": 4 } ], "boundingRegions": [ { "pageNumber": 32, "polygon": [ 3.1969, 3.6072, 3.4453, 3.6271, 3.4387, 3.7095, 3.1903, 3.6896 ] } ], "content": "DATE" }, { "spans": [ { "offset": 43885, "length": 9 } ], "boundingRegions": [ { "pageNumber": 32, "polygon": [ 4.5665, 3.7041, 5.0429, 3.7377, 5.0361, 3.8341, 4.5597, 3.8005 ] } ], "content": "ISSUED TO" }, { "spans": [ { "offset": 43895, 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