A list of Washington businesses licensed to store and/or transport waste tires.

Design requirements for infiltration trenches with soils considered a treatment BMP

Read the online open house for the Goldendale Energy Storage Project draft Environmental Impact Statement.

Cowlitz County Permit SL 16-0975 Port of Kalama and Northwest Innovation Works – Applicants Incomplete Shoreline Conditional Use Permit #1056

Copy of letter and permit document for dam construction for BioRecycling's North Ranch septage lagoon.

Transcript of the second hearing on the Goldendale Energy Storage Project draft EIS

Transcript of the third hearing on the Goldendale Energy Storage Project draft EIS

Decision to approve hazardous waste delisting and treatment variance petitions

This document explains that Frog Creek Partners Gutter Bin is determined to be functionally equivalent to the Storm Drain Inlet Protection as described in BMP C220 in the 2019 SWMMWW and BMP C105E in the 2019 SWMMEW.

This is an excel file to help permittees organize the summary report for the LID and track their efforts.

This spreadsheet helps individual water quality permittees to develop local discharge limitations.

We issued the Industrial Stormwater General Permit in 2014. This is a National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit for stormwater discharges associated with industrial activities.

Gravity Acquisition and Depth to Basement Modeling of the Spokane Valley and Rathdrum Prairie Aquifer, Northeastern Washington and Northwestern Idaho, John S. Oldow and Kenneth F. Sprenke, Idaho Department of Water Resources, WA Ecology, October 31, 2006 WAC 173-557; 173-555 rulemaking.

Ground-Water Flow Model for the Spokane valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho, United States Geological Survey, Scientific Investigations Report 2007–5044 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

Hydrogeologic Framework and Ground-Water Budget of the Spokane Valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, United States Geological Survey, Scientific Investigations Report 2007 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

Instream Flow and Fish Habitat Assessment, FERC Project No. 2545, Avista Corporation, Northwest Hydraulic Consultants and Hardin-Davis, Inc, June 2004 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

Instream Flow Recommendations Memorandum for WRIA Planning Units 54 and 55/57, WRIA 54/57 Spokane River Instream Flow Workgroup Memorandum, June 9, 2008 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

Lower Spokane River Redband Trout Spawning Habitat: Monroe Street Dam to Nine Mile Dam Pool, Spokane River Hydroelectric Project, FERC Project No. 2545, Dr. R. Craig Addley and Mr. N. Phil Peterson, February 2011 WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

Sites covered under the Construction Stormwater General Permit (Permit) must take specific reporting and adaptive management actions in order to comply with permit requirements when obtaining high turbidity results (greater than or equal to 250 Nephelometric Turbidity Units (NTUs)) or low transparency results (less than or equal to 6 centimeters).

All Permittees must inspect the construction site and monitor water discharging from the construction site. Inspections must be summarized in an Inspection Report or Checklist and kept with the Site Log Book. These requirements are listed in the CSWGP - S4. Monitoring Requirements, Benchmarks and Reporting Triggers.