Brief Records : EPA National Library Catalog

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Showing Items: 426 - 450
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Document Number: 426 Full Record
Main Title Development and Evaluation of a Transportation Control Plan for the Massachusetts Portion of the Hartford-New Haven-Springfield Air Quality Control Region. Volume I. Proposed Transportation Control Plan.
Author Midurski, Theodore P. ; Bryand, David A. ; Kincannon, III, Benjamin F. ; Mills, Michael T. ; Weinstein., Sharon M. ;
CORP Author GCA Corp., Bedford, Mass. GCA Technology Div.;Environmental Protection Agency, Boston, Mass. Region 1.
Year Published 1975
Report Number GCA-TR-75-9-G-Vol-1; EPA-68-02-1376; EPA/901/9-75/002a;
Stock Number PB-252 697
Additional Subjects Air pollution abatement ; Urban areas ; Massachusetts ; Urban transportation ; Transportation management ; Exhaust emissions ; Carbon monoxide ; Hydrocarbons ; Traffic engineering ; Methodology ; Project planning ; Technology ; Air pollution standards ; Springfield(Massachusetts) ; Standard metropolitan statistical areas ; Air quality maintenance ; Air quality control regions
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NTIS  PB-252 697 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 325p

Document Number: 427 Full Record
Main Title Development and Evaluation of the Regional Oxidant Model for the Northeastern United States.
Author Schere, K. L. ; Wayland, R. A. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. ;Computer Sciences Corp., Research Triangle Park, NC. ;National Oceanic and Atmospheric Administration, Rockville, MD.
Year Published 1988
Report Number EPA/600/D-88/169;
Stock Number PB88-239157
Additional Subjects Air pollution control ; Ozone ; Smog ; Photochemical reactions ; Urban areas ; Emission ; Evaluation ; Nitrogen oxides ; Regional Oxidant Model ; Northeast Region(United States) ; Toxic substances
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NTIS  PB88-239157 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p

Document Number: 428 Full Record
Main Title Development and Implementation of a Homology Mapping Technique to Aid the Selection of Cities for Modeling of the Effects of Urban Heat Island Mitigation Measures on Ozone Air Quality.
Author S. G. DOUGLAS ; A. B. HUDISCHEWSKYJ ; J. R. Lundgren
CORP Author ICF Consulting/Sustems Applications International, Inc., San Rafael, CA.; Environmental Protection Agency, Washington, DC.
Year Published 2001
Report Number SYSAPP-01-008
Stock Number PB2008-108916
Additional Subjects Air quality ; Mapping ; Cities ; Urban areas ; Climates ; Ozone ; Mitigation ; Modeling ; Temperature effects ; Photochemical reactions ; Emission ; Methodology ; Implementation
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NTIS  PB2008-108916 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 28p

Document Number: 429 Full Record
Main Title Development and Implementation of the EPA's Models-3 Initial Operating Version: Community Multi-Scale Air Quality (CMAQ) Model.
Author Byun, D. W. ; Ching, J. K. S. ; Novak, J. ; Young, J. ;
CORP Author National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div.;Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
Publisher 1997
Year Published 1997
Report Number EPA/600/A-97/040;
Stock Number PB97-193668
Additional Subjects Three-dimensional models ; Emissions ; Environmental transport ; Computer systems design ; Systems engineering ; Acid rain ; Regional analysis ; Ozone ; Urban areas ; Atmospheric transport ; Meteorological data ; Objected-oriented programming ; Computer architecture ; Implementation ; Algorithms ; Mathematical models ; Community Multi-Scale Air Quality Model ; MODELS-3 modeling system
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NTIS  PB97-193668 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p

Document Number: 430 Full Record
Main Title Development and Validation of Methods for Real-Time Measurement of Pollutant Transport from an Urbanized Estuary.
Author Tracey, G. A. ; James, C. ; Hatcher, G. ; Nelson, W. ;
CORP Author Science Applications International Corp., Narragansett, RI.;Environmental Research Lab., Narragansett, RI.
Publisher c1991
Year Published 1991
Report Number EPA-68-C1-0005; EPA/600/A-93/212 ; CONTRIB-1326
Stock Number PB93-228518
Additional Subjects Water pollution sampling ; Environmental transport ; Estuaries ; New Bedford Harbor ; Chemical analysis ; Polychlorinated biphenyls ; Suspended solids ; Dredging ; Tidal currents ; Sediments ; Urban areas ; Reprints ;
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NTIS  PB93-228518 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p

Document Number: 431 Full Record
Main Title Development of a Chemical Kinetic Mechanism for the U.S. EPA (Environmental Protection Agency) Regional Oxidant Model.
Author Whitten, G. Z. ; Johnson, R. G. ; Killus, J. P. ;
CORP Author Systems Applications, Inc., San Rafael, CA.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1985
Report Number EPA-68-02-3738; EPA/600/3-85/026;
Stock Number PB85-185858
Additional Subjects Mathematical models ; Photochemistry ; Smog ; Reaction kinetics ; Oxidizers ; Urban areas ; Test chambers ; Experimental design ; Transport properties ; Tables(Data) ; Graphs(Charts) ; Concentration(Composition) ; Chemical reaction mechanisms ; Expanded carbon bond mechanism ; Air quality ; Atmospheric chemistry ; Computer applications ; Expanded carbon bond mechanism for regional oxidants ; Expanded carbon bond mechanism for urban oxidants
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NTIS  PB85-185858 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 266p

Document Number: 432 Full Record
Main Title Development of a Rapid Survey Method of Sampling and Analysis for Asbestos in Ambient Air.
Author Henr, W. M. ; Heffelfinge, R. E. ; Melto, C. W. ; Kiefe, D. L. ;
CORP Author Battelle Columbus Labs., Ohio.
Year Published 1972
Report Number CPA-22-69-110; APTD-0965;
Stock Number PB-209 477
Additional Subjects ( Asbestos ; Gas sampling) ; ( Air pollution ; Asbestos) ; Particles ; Electron microscopy ; Urban areas ; Rural areas ; Ash content ; Impactors ; Separation ; Air filters ; Air pollution detection ; Transmission electron microscopy
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NTIS  PB-209 477 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 43p

Document Number: 433 Full Record
Main Title Development of a Simulation Model for Estimating Ground Level Concentrations of Photochemical Pollutants.
Author Rot, Philip M. ; Reynold, Steven D. ; Robert, Philip J. W. ; Seinfel, John H. ;
CORP Author Systems Applications, Inc., Beverly Hills, Calif.
Year Published 1971
Report Number 71SAI-21; CPA-70-148; 0914;
Stock Number PB-206 415
Additional Subjects ( Air pollution ; Atmospheric models) ; ( Smog ; Atmosphic models) ; Carbon monoxide ; Urban areas ; Photochemistry ; Mathematical models ; Atmospheric motion ; Reaction kinetics ; Meteorological data ; Temperature inversions ; Mapping ; Atmospheric composition ; California ; Finite difference theory ; Los Angeles(California)
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NTIS  PB-206 415 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 60p

Document Number: 434 Full Record
Main Title Development of a Simulation Model for Estimating Ground Level Concentrations of Photochemical Pollutants. Appendix B. A Kinetic Mechanism for Atmospheric Photochemical Reactions.
Author Seinfel, John H. ; Hech, Thomas A. ; Rot, Philip M. ;
CORP Author Systems Applications, Inc., Beverly Hills, Calif.
Year Published 1971
Report Number 71SAI-9; CPA-70-148; 0909;
Stock Number PB-206 410
Additional Subjects ( Air pollution ; Atmospheric models) ; ( Smog ; Atmospheric models) ; ( Photochemical reactions ; Smog) ; Urban areas ; Reaction kinetics ; Mathematical models ; Nitrogen oxides ; Hydrocarbons ; Carbon monoxide ; Ozone ; Oxidation ; California ; Chemical reaction mechanisms ; Los Angeles(California)
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NTIS  PB-206 410 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 57p

Document Number: 435 Full Record
Main Title Development of a Simulation Model for Estimating Ground Level Concentrations of Photochemical Pollutants. Appendix C. The Treatment of Meteorological Variables.
Author Rot, Philip M. ; Reynold, Steven D. ; Robert, Philip J. W. ;
CORP Author Systems Applications, Inc., Beverly Hills, Calif.
Year Published 1971
Report Number 71SAI-17; CPA-70-148; 0910;
Stock Number PB-206 411
Additional Subjects ( Air pollution ; Atmospheric models) ; ( Smog ; Atmospheric models) ; ( Atmospheric motion ; Air pollution) ; Urban areas ; Meteorological data ; Wind(Meteorology) ; Temperature ; Mapping ; Temperature inversions ; California ; Los Angeles(California)
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NTIS  PB-206 411 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 51p

Document Number: 436 Full Record
Main Title Development of a Simulation Model for Estimating Ground Level Concentrations of Photochemical Pollutants. Appendix D. Numerical Integration of the Continuity Equations.
Author Reynold, Steven D. ;
CORP Author Systems Applications, Inc., Beverly Hills, Calif.
Year Published 1971
Report Number 71SAI-21; CPA-70-148; 0911;
Stock Number PB-206 412
Additional Subjects ( Air pollution ; Atmospheric models) ; ( Smog ; Atmospheric models) ; ( Atmospheric motion ; Air pollution) ; Atmospheric composition ; Urban areas ; Mathematical models ; Carbon monoxide ; Applications of mathematics ; California ; Numerical integration ; Finite difference theory ; Los Angeles(California)
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NTIS  PB-206 412 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 28p

Document Number: 437 Full Record
Main Title Development of a Simulation Model for Estimating Ground Level Concentrations of Photochemical Pollutants. Appendix E. Air Quality Data Used in Model Validation.
Author Robert, Philip J. W. ; Rot, Philip M. ;
CORP Author System Applications, Inc., Beverly Hills, Calif.
Year Published 1971
Report Number 71SAI-7; CPA-70-148; 0912;
Stock Number PB-206 413
Additional Subjects ( Air pollution ; Atmospheric models) ; ( Smog ; Atmospheric models) ; Urban areas ; California ; Monitors ; Oxidizers ; Carbon monoxide ; Nitrogen oxides ; Hydrocarbons ; Ozone ; Tables(Data) ; Air quality data ; Los Angeles(California)
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NTIS  PB-206 413 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 29p

Document Number: 438 Full Record
Main Title Development of a Simulation Model for Estimating Ground Level Concentrations of Photochemical Pollutants. Appendix F. Description of the Computer Program.
Author Reynold, Steven D. ;
CORP Author Systems Applications, Inc., Beverly Hills, Calif.
Year Published 1971
Report Number 71SAI-26; CPA-70-148; 0913;
Stock Number PB-206 414
Additional Subjects ( Air pollution ; Atmospheric models) ; ( Smog ; Atmospheric models) ; Urban areas ; Computer programming ; Mathematical models ; Meteorological data ; Sources ; Atmospheric composition ; Atmospheric motion ; Computerized simulation ; California ; Los Angeles(California)
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NTIS  PB-206 414 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 27p

Document Number: 439 Full Record
Main Title Development of a Transportation Demonstration Project in a Military Community. Part I. Report and Action Plan.
Author Duffey-Armstrong, Marilyn ; Roddin, Marc ; Skidmore, Sarita ; Milbergs., Egils ;
CORP Author Stanford Research Inst Menlo Park Calif
Year Published 1975
Report Number N00014-75-C-0568; NR-364-157 ;SRI-3935;
Stock Number AD-A023 421/1
Additional Subjects Transportation ; Urban planning ; Passenger vehicles ; Navy ; Cooperation ; Virginia ; Municipalities ; Tidewater ; Integrated systems ; Community relations ; Land use ; Energy conservation ; Land transportation ; Military facilities ; Urban areas ; Mass transportation ; Local government ; Public transportation
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NTIS  AD-A023 421/1 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 88p

Document Number: 440 Full Record
Main Title Development of a Transportation Demonstration Project in a Military Community. Part II. The Transportation Action Program for Tidewater Virginia.
Author Duffey-Armstrong, Marilyn ; Roddin, Marc ; Milbergs, Egils ; Skidmore., Sarita ;
CORP Author Stanford Research Inst Menlo Park Calif
Year Published 1975
Report Number N00014-75-C-0568; NR-364-157 ;SRI-3935;
Stock Number AD-A023 422/9
Additional Subjects Transportation ; Urban planning ; Passenger vehicles ; Cooperation ; Navy ; Virginia ; Tidewater ; Municipalities ; Commerce ; Water traffic ; Parking facilities ; Urban areas ; Military facilities ; Naval personnel ; Civilian personnel ; Military dependents ; Mass transportation ; Public transportation ; Local government
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NTIS  AD-A023 422/9 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 84p

Document Number: 441 Full Record
Main Title Development of a User Charge and Cost Monitoring System for Wastewater Collection and Treatment: A Case Study.
Author Clark, Robert M. ; Gillean, James I. ;
CORP Author Municipal Environmental Research Lab., Cincinnati, OH. ;ACT Systems, Inc., Winter Park, FL.
Year Published 1983
Report Number EPA-600/D-83-109;
Stock Number PB83-246140
Additional Subjects Sewage treatment ; Urban areas ; Cost analysis ; Water treatment devices ; Capitalized costs ; Collection ; Water pollution control ; Kentucky ; Florida ; Water costs ; Kenton County(Kentucky) ; Tampa(Florida) ; Cost sharing
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NTIS  PB83-246140 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 32p

Document Number: 442 Full Record
Main Title Development of an Improved Urban Airshed Modeling System.
Author Godowitch, J. M. ; Tang, R. T. ; Newsom, J. S. ;
CORP Author Computer Sciences Corp., Research Triangle Park, NC. ;National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div. ;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 1992
Year Published 1992
Report Number EPA/600/A-92/232;
Stock Number PB93-120889
Additional Subjects Research and development ; Computerized simulation ; Air pollution ; Atmospheric chemistry ; Meteorology ; Ozone ; Urban areas ; Deposition ; Three-dimensional calculations ; Atmospheric models ; Photochemical reactions ; Revisions ; Air quality ; Comparison ; Urban Airshed Model ; Eulerian photochemical grid model
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NTIS  PB93-120889 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 17p

Document Number: 443 Full Record
Main Title Development of an urban air quality simulation model with compatible RAPS data. /
Author Shir, C. C. ; Shieh., L. J.
Other Authors
Author Title of a Work
Shieh, L. J.
Eskridge, Robert E.
CORP Author IBM Research Lab., San Jose, Calif.;Environmental Protection Agency, Washington, D.C. Office of Research and Development.
Publisher Chemistry and Physics Laboratory, Office of Research and Development,
Year Published 1975
Report Number EPA-600/4-75-005-a; EPA-600/4-75-005-b; EPA-68-02-1833; EPA-ROAP-26AAI-23
Stock Number PB-256 652
OCLC Number 768850766
Subjects Air--Pollution--United States--Mathematical models ; Air quality--United States ; Urban pollution--United States ; Air--Pollution--Mathematical models
Additional Subjects Air pollution ; Mathematical models ; Sulfur dioxide ; Urban areas ; Atmospheric diffusion ; Computer programs ; FORTRAN ; Atmospheric diffusion models ; Urban area ; Concentration(Composition) ; Saint Louis(Missouri) ; Regional Air Monitoring System ; IBMAQ-2 computer program
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9100JWA3.PDF
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9100J9QC.PDF
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ELBD ARCHIVE EPA 600-4-75-005b Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB-256 652 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ii, 180 p. : ill., maps ; 28 cm.

Document Number: 444 Full Record
Main Title Development of CBM-X Mechanisms for Urban and Regional AQSMs.
Author Whitten, G. Z. ; Gery., M. W. ;
CORP Author Systems Applications, Inc., San Rafael, CA.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Publisher Feb 86
Year Published 1986
Report Number EPA-68-02-3738; EPA/600/3-86/012;
Stock Number PB86-155033
Additional Subjects Urban areas ; Reaction kinetics ; Air pollution ; Photochemical reactions ; Smog ; Chemical bonds ; Condensation reactions ; Mathematical models ; Test chambers ; Experimental design ; Error analysis ; Chemical reaction mechanisms ; Regional analysis ; Air quality simulation models
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NTIS  PB86-155033 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 170p

Document Number: 445 Full Record
Main Title Development of Guidelines for Identification and Evaluation of Localized Violations of Carbon Monoxide Standards.
Author Castaline, Alan H. ; Midurski, Theodore P. ; Patterson, Robert M. ; Soolman., Arnold J. ;
CORP Author GCA Corp., Bedford, Mass. GCA Technology Div.;Environmental Protection Agency, Boston, Mass. Region 1.
Year Published 1976
Report Number GCA-TR-75-35-G-Vol-2; EPA-68-02-1337; EPA/901/9-76/002;
Stock Number PB-252 701
Additional Subjects Highway transportation ; Air pollution ; Exhaust emissions ; Urban transportation ; Carbon monoxide ; Standards ; Guidelines ; Management planning ; Traffic engineering ; Methodology ; Surveys ; Urban areas ; Identifying ; Evaluation ; Massachusetts ; Intersections ; Roads ; Data acquisition ; Statistical data ; Mathematical models ; Law enforcement ; Automobile exhaust ; Air pollution standards ; Violations ; Air quality maintenance ; Waltham(Massachusetts)
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NTIS  PB-252 701 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 213p

Document Number: 446 Full Record
Main Title Development of Hazardous Air Pollutant Emission Factors from State Source Test Programs.
Author Jones, D. L. ; Blackley, C. ; Pring, M. ; Self, P. ; Sutton, L. ;
CORP Author Radian Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher 1994
Year Published 1994
Report Number EPA-68-D1-0031; EPA/600/A-95/023;
Stock Number PB95-174652
Additional Subjects Air pollution monitoring ; Emission factors ; Air pollution sources ; Sectoral analysis ; Databases ; Stationary sources ; Air pollution sampling ; Toxicity ; Chemical analysis ; Test methods ; Urban areas ; Reprints ; Hazardous air pollutants ; Clean Air Act Amendments
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NTIS  PB95-174652 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 13p

Document Number: 447 Full Record
Main Title Development of Methods to Define Water Quality Effects of Urban Runoff.
Author Mancini, J. L. ;
CORP Author Manhattan Coll., Bronx, NY.;Municipal Environmental Research Lab., Cincinnati, OH.
Year Published 1983
Report Number EPA-R-806828; EPA-600/2-83-125;
Stock Number PB84-122928
Additional Subjects Runoff ; Water pollution ; Urban areas ; Storms ; Combined sewers ; Overflows ; Environmental impacts ; Oxygen ; Dissolved gases ; Response ; Fishes ; Mortality ; Concentration(Composiition) ; Lead(Metal) ; Zinc ; Toxicity ; Droughts ; Mathematical models ; Storm water runoff ; Water pollution effects(Animals)
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NTIS  PB84-122928 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 162p

Document Number: 448 Full Record
Main Title Development of Representative Driving Patterns at Various Average Route Speeds.
Author Smith., Malcom ;
CORP Author Scott Research Labs., Inc., San Bernardino, Calif.;Environmental Protection Agency, Research Triangle Park, N.C. Monitoring and Data Analysis Div.
Year Published 1974
Report Number EPA-68-02-1301; EPA/450/3-76/023;
Stock Number PB-257 970
Additional Subjects Exhaust emissions ; Curve fitting ; Automobiles ; Velocity ; Urban areas ; Diurnal variations ; Highways ; Statistical analysis ; Pattern recognition ; Regression analysis ; Logarithmic functions ; Linear systems ; Computer programming ; Hydrocarbons ; Carbon monoxide ; Nitrogen oxides ; Estimating ; Changes ; Light duty vehicles
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NTIS  PB-257 970 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 85p

Document Number: 449 Full Record
Main Title Development of the regional oxidant model version 2.1 : interim report, January 1988 - April 1989 /
Author Young, J. O. ; Aissa, M. ; Boehm, T. L. ; Coats, C. J. ; Eichinger, J. R.
CORP Author Computer Sciences Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher Atmospheric Research and Exposure Assessment Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1989
Report Number EPA/600/3-89/044; EPA-68-01-7365
Stock Number PB89-194252
Subjects Air--Pollution--Mathematical models ; Air quality--Mathematical models ; Atmospheric ozone--Mathematical models ; Photochemical smog--Mathematical models ; Photochemical oxidants--Mathematical models
Additional Subjects Mathematical models ; Oxidation ; Ozone ; Air pollution ; Meteorological data ; Urban areas ; Forecasting ; Sources ; Photochemical reactions ; Data processing ; Land use ; Computer programming ; Regional analysis ; Air quality ; Atmospheric chemistry ; Environmental transport
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9100J8TD.PDF
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NTIS  PB89-194252 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 64 pages : illustrations ; 28 cm

Document Number: 450 Full Record
Main Title Development of Toxic Screening Models for Surface Water Supplies.
Author Grayman, W. M. ; Goodrich, J. A. ; Clark, R. M. ;
CORP Author Municipal Environmental Research Lab., Cincinnati, OH. ;Grayman (Walter M.), Cincinnati, OH.
Year Published 1984
Report Number EPA/600/D-84/197;
Stock Number PB84-225010
Additional Subjects Surface waters ; Water quality ; Mathematical models ; Water supply ; Industrial wastes ; Runoff ; Urban areas ; Agricultural products ; Mississippi River ; Ohio River ; Assessments ; Kanawha River ; Potable water ; Water consumption ; Water pollution control ; Concentration(Composition) ; Toxic substances ; Case studies
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NTIS  PB84-225010 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p

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