U.S. Environmental Protection Agency

Biological evaluation for the general NPDES permit for offshore seafood processing discharge within federal waters off the coasts of Washington and Oregon

Columbia River Basin toxics reduction action plan

Cordero and McDermitt Mercury Mine sites, Humboldt County, Nevada interim removal assessment report

Draft ocean discharge criteria evaluation for the general NPDES permit for offshore seafood processing discharge in federal waters off the Washington and Oregon coast

EPA Clean Water Act 303(c) determinations on Oregon's new and revised aquatic life toxic criteria submitted on July 8, 2004, and as amended by Oregon's April 23, 2007 and July 21, 2011 submissions

EPA Review Cover Letter The EPA's review of portions of Oregon's March 2001 antidegradation policy implementation internal management directive for NPDES permits and section 401 water quality certifications

EPA Review Document The EPA's review of portions of Oregon's March 2001 antidegradation policy implementation internal management directive for NPDES permits and section 401 water quality certifications

EPA approval letter The EPA's review of portions of Oregon's March 2001 antidegradation policy implementation internal management directive for NPDES permits and section 401 water quality certifications

EPA's BEACH report: Oregon 2008 swimming season

Evaluation of applied decision systems study of Oregon bottle bill

Fact sheet: offshore seafood processors in federal waters off the coast of Washington and Oregon (WAG520000)

Figure 1-1. Site Vicinity Map Alkali Lake disposal site expanded site inspection report, Alkali Lake, Oregon

Figure 2-1. Site Map Alkali Lake disposal site expanded site inspection report, Alkali Lake, Oregon

Final federal aquatic life criteria for aluminum in Oregon fresh waters

Final listing of Bradford Island on the national priorities list

Final report on the State of Oregon's proposed assumption of Clean Water Act §404 permit authority and integration of Endangered Species Act requirements

Jeopardy and destruction or adverse modification of Critical Habitat Endangered Species Act biological opinion for Environmental Protection Agency's proposed approval of certain Oregon Administrative Rules related to revised water quality criteria for tox

Mine waste removal assessment at properties of release or threatened release, McDermitt, Humboldt County, Nevada, and Malheur County, Oregon

Oregon's bottle bill: the first six months

Portland Harbor human health risk assessment summary

Preliminary report of assessment of a field investigation of six-year spontaneous abortion rates in three Oregon areas in relation to forest 2,4,5-T spray practices

Preliminary report of assessment of field investigation of six-year spontaneous abortion rates in three Oregon areas in relation to forest 2,4,5-T spray practices

Remediation system evaluation McCormick and Baxter Superfund site, Portland, Oregon

2018-06 (Version 1.0) A scientific rationale in support of the stream function assessment method for Oregon

2018-06 (Version 1.0) Stream function assessment method for Oregon

2024-09 (Version 2.0) A scientific rationale in support of the stream function assessment method for Oregon

2024-09 (Version 2.0) Stream function assessment method for Oregon user manual

An environmental history of the Tillamook Bay Estuary and Watershed

Olalla/Lookingglass watershed assessment and action plan

Oregon wildfires: impacts on drinking water systems and water quality

Part 1: Rapid Assessment Method Hydrogeomorphic (HGM) assessment guidebook for tidal wetlands of the Oregon coast

Part 2 Science Review and Data Analysis Hydrogeomorphic (HGM) assessment guidebook for tidal wetlands of the Oregon coast

Part 3 Wetland Profiles of Oregon's Coastal Watersheds and Estuaries Hydrogeomorphic (HGM) assessment guidebook for tidal wetlands of the Oregon coast

Preliminary assessments, West Salem, Salem, Oregon

A scientific rationale in support of the stream function assessment method for Oregon

Annual state capacity development program implementation report

Clean Water State Revolving Fund loan program annual report

Clean Water State Revolving Fund, Oregon program evaluation report, state fiscal year

Drinking Water State Revolving Fund (DWSRF) annual report

Hydrogeomorphic (HGM) assessment guidebook for tidal wetlands of the Oregon coast

Mercury TMDL development for the Willamette River Basin (Oregon) - technical support document

Revised Willamette Basin mercury TMDL

Stream function assessment method for Oregon user manual

Water quality/drinking water supply resource report

Alkali Lake disposal site expanded site inspection report, Alkali Lake, Oregon

Oceanography of the nearshore coastal waters of the Pacific Northwest relating to possible pollution

Portland Harbor RI/FS final remedial investigation report [Appendix F Baseline human health risk assessment]

The EPA's review of portions of Oregon's March 2001 antidegradation policy implementation internal management directive for NPDES permits and section 401 water quality certifications

Pesticidas en la industria forestal: una quía para trabajadores para las prácticas seguras

Pesticides in forestry: a workers' guide to safe practices

Spreadsheet needed for using Part I Rapid Assessment Method Hydrogeomorphic (HGM) assessment guidebook for tidal wetlands of the Oregon coast