Science & Technology
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Improving Inspection and Maintenance Performance and On-board Diagnostics Monitor Readiness Memo
This EPA memorandum transmits an updated list of vehicles that exhibit issues related to OBD (on board diagnostics) monitor readiness and makes suggestions for how Inspection/Maintenance (I/M) programs can improve operational performance by addressing
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Guidance on Interim Approval of Inspection and Maintenance Plans
This document provides guidance on interim approval of I/M plans.
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PM Hot-spot Modeling: Lessons Learned in the Field
This TRB Sunday Workshop slide presentation presents PM HOt-spot Modeling: Lessons Learned in the Field.
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Overview of the PM Hot-spot Requirements and Guidance for Transportation Conformity
This slide presentation is an Overview of the PM Hot-spot Requirements and Guidance for Transportation Conformity.
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Description of the High and Low Emitter Profile Models
Letter from Radian International to U.S. EPA Describing the High and Low Emitter Profile Models.
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Roadside Inspection Program in California
This report summarizes the key aspects of the Bureau of Automotive Repair s (BAR) Roadside Inspection Program.
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Smog Check Station Performance
The report reviews the performance of different categories of inspection station in California and maintenance (I/M) program, also known as the Smog Check program.
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Methodology used for Calculating VMT
The report provides the estimation of the annual VMT in California to help evaluate the effectiveness of the California s inspection and maintenance (I/M) program, also known as the Smog Check program.
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Greeley Remote Sensing Pilot Program Final Report
This report evaluates how remote sensing technology can beused as a supplement or alternative to an inspection/maintenance (I/M) program.
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Table for Remote Sensing - Summary of RSD Studies
Remote Sensing - Summary of RSD Studies
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System Documentation for Onroad Heavy-Duty Vehicles in the Engines and Vehicles Compliance Information System (EV-CIS)
Use these files for the commercial trucks and buses module in EV-CIS.
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EPA's Bristol Bay Assessment
EPA's scientific assessment of the potential impact of large-scale mining operations on the Bristol Bay watershed ecosystem.
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Final National Level Listed Species Biological Evaluation for Methomyl
EPA has drafted Biological Evaluations (BEs) for two additional pilot chemicals: carbaryl, and methomyl. The draft BEs are based on interim methods developed in conjunction with FWS, NMFS and USDA in response to the National Academy of Science report.
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Final National Level Listed Species Biological Evaluation for Carbaryl
EPA has drafted Biological Evaluations (BEs) for two additional pilot chemicals: carbaryl, and methomyl. The draft BEs are based on interim methods developed in conjunction with FWS, NMFS and USDA in response to the National Academy of Science report.
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Virtual Beach 3.0.7 User Guide
Virtual Beach version 3 (VB3) is a decision support tool that constructs site-specific statistical models to predict fecal indicator bacteria (FIB) concentrations at recreational beaches.
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Tools for Source Water Protection Webcast
Learn more about tools for source water protection during our March 21st webcast.
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RFC: CHEMDAT8, RCRA, SCDM, SCDM Win, SIMS, STF, SPHEM, CHEM9, HHRAP, HHRAPCF, TreatDB, KowWin, PhysProp, Chemfate, Water9, and PBT Profiler Databases
Submitted by the U.S. Chamber of Commerce
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Analytical Tools Interface for Landscape Assessments (ATtILA) for landscape metrics
ATtILA is easy to use ArcView extension that calculates many commonly used landscape metrics. By providing an intuitive interface, the extension provides the ability to generate landscape metrics to a wide audience regardless of their GIS knowledge level.
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Recent Additions for Provisional Peer-Reviewed Toxicity Values (PPRTVs)
The PPRTV recent additions page includes the dates and announcements of the addition and removal of PPRTV assessments over the years. Archived assessments can be obtained by contacting the STSC support center via the contact us link.