U.S. Environmental Protection Agency (EPA)

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  • 2017 Potable Reuse Compendium

    2017 Potable Reuse Compendium

    U.S. Environmental Protection Agency | January 11, 2018...
    Summary

    Appropriate and necessary treatment and reuse of wastewater to augment existing water resources is a rapidly expanding approach for both non-potable and potable...

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  • Advancement of Salinity and Flow Monitoring in the San Francisco Bay Delta, San Francisco Bay Delta Action Plan Implementation Support, FINAL REPORT

    Advancement of Salinity and Flow Monitoring in the San Francisco Bay Delta, San Francisco Bay Delta Action Plan Implementation Support, FINAL REPORT

    U.S. Geological Survey, U.S. Environmental Protection Agency | February 1, 2017...
    Summary

    This report evaluates the cost and utility of adding coupled surface and near-bottom salinity monitors along the axis of the San Francisco Estuary,...

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  • Clean Water Act Jurisdiction Following the U.S. Supreme Court’s Decision in Rapanos v. United States & Carabell v. United States

    Clean Water Act Jurisdiction Following the U.S. Supreme Court’s Decision in Rapanos v. United States & Carabell v. United States

    U.S. Environmental Protection Agency | December 2, 2008...
    Summary

    Congress enacted the Clean Water Act ("CWA" or "the Act") "to restore and maintain the chemical, physical, and biological integrity of the Nation's...

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  • Ecological Condition Assessments of California’s Perennial Wadeable Streams (2000 through 2006)

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    Ecological Condition Assessments of California’s Perennial Wadeable Streams (2000 through 2006)

    California State Water Resources Control Board | October 15, 2007...
    Summary

    The struggle to adequately monitor the condition of waterbodies with limited financial resources is a challenge faced by water resource agencies worldwide. For...

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  • Evaluation of the California State Water Resource Control Board’s Bioassessment Program

    Evaluation of the California State Water Resource Control Board’s Bioassessment Program

    California State Water Resources Control Board | May 15, 2009...
    Summary

    The State of California’s bioassessment, monitoring and assessment (M&A), and water quality standards (WQS) programs were reviewed in January 2008 using the U.S....

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  • Hydrologic Modeling of the Santa Clara River Watershed with the U.S. EPA Hydrologic Simulation Program – FORTRAN (HSPF)

    Hydrologic Modeling of the Santa Clara River Watershed with the U.S. EPA Hydrologic Simulation Program – FORTRAN (HSPF)

    Ventura County Watershed Protection District | January 24, 2009...
    Summary

    The purpose of the Santa Clara River (SCR) Watershed Feasibility Study as described in the PMP (October, 2003) is to determine the impact of...

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  • Salinas River Watershed Area Salt Modeling

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    Salinas River Watershed Area Salt Modeling

    California Central Coast Regional Water Quality Control Board, U.S. Environmental Protection Agency Region 9 – Pacific Southwest Region | November 13, 2015...
    Summary

    Tetra Tech supported EPA Region 9 and the Central Coast Regional Water Quality Control Board (CCRWQCB) for an assessment of salt impairments and...

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  • Technical Workshop on Estuarine Habitat in the Bay Delta Estuary

    Technical Workshop on Estuarine Habitat in the Bay Delta Estuary

    San Francisco Estuary Institute | March 27, 2012...
    Summary

    The Technical Workshop on Estuarine Habitat in the Bay Delta Estuary was initiated by U.S. Environmental Protection Agency (EPA), with support from the...

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  • The Development of Nutrient Criteria For Ecoregions Within: California, Arizona, and Nevada

    The Development of Nutrient Criteria For Ecoregions Within: California, Arizona, and Nevada

    U.S. Environmental Protection Agency Region 9 – Pacific Southwest Region, California State Water Resources Control Board | January 1, 2002...
    Summary

    Development of regional nutrient criteria is one component of a larger strategy to address water quality problems associated with nutrient over-enrichment and culturally-induced...

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  • Thermal performance in juvenile hatchery Oncorhynchus tshawytscha: aerobic scope tests over a range of environmental temperatures

    Thermal performance in juvenile hatchery Oncorhynchus tshawytscha: aerobic scope tests over a range of environmental temperatures

    U.S. Environmental Protection Agency Region 9 – Pacific Southwest Region | March 15, 2016...
    Summary

    In heavily-altered ecosystems, anthropogenic factors coupled with global climate change have drastically changed available habitats for many native fishes (Cloern and Jassby 2012,...

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  • Vulnerability Assessments in Support of the Climate Ready Estuaries Program: A Novel Approach Using Expert Judgment, Volume I

    Vulnerability Assessments in Support of the Climate Ready Estuaries Program: A Novel Approach Using Expert Judgment, Volume I

    U.S. Environmental Protection Agency, San Francisco Estuary Partnership, National Estuary Program, San Francisco Bay Conservation and Development Commission | January 1, 2012...
    Summary

    The San Francisco Bay estuary is highly vulnerable to climate - related changes including increased water temperatures, changes in precipitation and winds, and...

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  • Water Quality Assessment of the Condition of California Coastal Waters and Wadeable Streams: Clean Water Act Section 305b Report 2006

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    Water Quality Assessment of the Condition of California Coastal Waters and Wadeable Streams: Clean Water Act Section 305b Report 2006

    State Water Resources Control Board | July 25, 2006...
    Summary

    One of the first steps in managing our environmental resources is to determine their current condition by answering the key question, “What is...

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  • Water Quality Challenges in the San Francisco Bay/ Sacramento-San Joaquin Delta Estuary: EPA’s Action Plan

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    Water Quality Challenges in the San Francisco Bay/ Sacramento-San Joaquin Delta Estuary: EPA’s Action Plan

    U.S. Environmental Protection Agency (EPA) | August 22, 2012...
    Summary

    The U.S. Environmental Protection Agency (EPA) developed this Action Plan after assessing the effectiveness of current regulatory mechanisms designed to protect water quality...

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