Search Results for the EPA National Library Catalog

Items Found: 5260

Showing: Items 5101 - 5150

Your Search: (SUBJECT=Concentration Composition)

 
 
 

Select Item Title Year Published
User's guide for the gas chromatography automation system / 1979
User's guide for the photochemical box model (PBM) / 1984
User's guide for the urban airshed model / 1990
User's guide for the urban airshed model : volume VI : user's manual for the postprocessing system / 1991
User's guide for the urban airshed model : volume VI : user's manual for the postprocessing system / 1991
User's Guide for the Urban Airshed Model. Volume 1. User's Manual for UAM (CB-IV). 1990
User's Guide for the Urban Airshed Model. Volume 2. User's Manual for the UAM (CB-IV) Modeling System. 1990
User's Guide for the Urban Airshed Model. Volume 3. User's Manual for the Diagnostic Wind Model. 1990
User's Guide for the Urban Airshed Model. Volume 4. User's Manual for the Emissions Preprocessor System. 1990
User's Guide for the Urban Airshed Model. Volume 5. Description and Operation of the ROM - UAM Interface Program System. 1990
User's Guide to the Rough Terrain Diffusion Model (RTDM) (Rev. 3.20). 1987
User's Guide to the Texas Climatological Model. 1980
User's guide to TSCREEN : a model for screening toxic air pollutant concentrations (revised). 1994
User's guide to TSCREEN : a model for screening toxic air pollutant concentrations / 1990
User's Guides to the Interactive Version of Three Point Source Dispersion Programs: PTMAX, PTDIS, and PTMTP. 1973
User's instructions for the SHORTZ and LONGZ computer program (volume II) / 1982
User's Instructions for the SHORTZ and LONGZ Computer Programs: Volume I 1982
User's manual for chemical mass balance model / 1983
User's manual for OZIPM-2 : ozone isopleth plotting with optional mechamisms / 1984
User's Manual for Single-Source (CRSTER) Model (Addendum). 1987
User's manual for single-source (CRSTER) model. 1977
User's Manual for the APRAC-1A Urban Diffusion Model Computer Program. 1972
Users' Manual for the APRAC-2 Emissions and Diffusion Model. 1977
Uses, limitations and technical basis of procedures for quantifying relationships between photochemical oxidants and precursors. 1977
Using a Flame Ionization Detector (FID) Continuously Measure Toxic Organic Vapors in a Paint Spray Booth. 1992
Using Chlorine Dioxide for Trihalomethane Control. 1986
UTIL-1. EPA/ORD (Environmental Protection Agency/Office of Research and Development) Air Quality Simulation Model. 1989
Utility of Buoyant Plume Models in Predicting the Initial Dilution of Drilling Fluids. Chapter 13. 1990
Utility of reactivity criteria in organic control strategies : application to the Los Angeles atmosphere / 1976
Utilization of natural ecosystems for wastewater renovation / 1979
UV-Sensitive Complex Phosphorus: Association with Dissolved Humic Materials and Iron in a Bog Lake. 1982
Validation and Sensitivity Analysis of the Gaussian Plume Multiple-Source Urban Diffusion Model. 1971
Validation of a method for estimating pollution emission rates using open-path FTIR spectroscopy and modeling techniques / 1993
Validation of air monitoring data. 1980
Validation of the EKMA Model Using Historical Air Quality Data. 1982
Validation of the Semi-Volatile Organic Sampling Train Method for Measuring Emissions from Hazardous Waste Incinerators. 1985
Validation of VOC Emissions Inventories by Source Apportionment and (14)C Dating Methods. Part 1. 1994
Validation Study of an Approach for Evaluating the Impact of a Shopping Center on Ambient Carbon Monoxide Concentrations. 1974
Validation Testing of New Mechanisms with Outdoor Chamber Data. Volume 1: Comparison of CB4 and CAL Mechanisms. 1989
Validation Testing of New Mechanisms with Outdoor Chamber Data. Volume 2: Analysis of VOC Data for the CB4 and CAL Photochemical Mechanisms. 1989
Validation Testing of New Mechanisms with Outdoor Chamber Data. Volume 4: Appendixes to Photochemical Reaction Photolysis Rates in the UNC Outdoor Chamber. 1989
Validity of laboratory tests for predicting copper toxicity in streams / 1976
Valley Model Computer Program. 1977
Valley Model user's guide / 1977
Vapor sampling device for interface with microtox assay for screening toxic industrial chemicals / 2004
Variability and correlation in raw and clean coal : measurement and analysis / 1983
Variability of I/M Test Scores over Time. 1988
Variation in Elemental Content of Lettuce Grown Under Base-Line Conditions in Five Controlled-Environment Facilities. 1982
Variation of Urban Runoff with Duration and Intensity of Storms. 1970
Variations of Coliform Bacteria and Other Pollution Indices in Surface Waters. 1965

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