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The following technologies have been approved by Ecology as equivalent to existing water quality treatment technologies that are currently listed in the 2005 Stormwater Management Manual for Western Washington and/or the 2004 Stormwater Management Manual for Eastern Washington. These technologies did not pass through the Technology Assessment Protocol – Ecology (TAPE) process.
Determined to be functionally equivalent to a Rain Garden
DeepRoot Partners
530 Washington Street
San Francisco, CA 94111
(415) 781-9700
Determined to be functionally equivalent to BMP C120 Temporary and Permanent Seeding
Terra Nova, Inc.
14716 Harvest Crest Ave.
Bakersfield, CA 93314
Determined to be
functionally equivalent to BMP C235 Straw Wattles
American Erosion Control, LLC
4145 Appalachian Way
Knoxville, TN 37918-6961
(865) 357-4335
Determined to be
functionally equivalent to Sand Bags as referenced in BMP C123 Plastic Covering
Climacover
44128 Nisqually Ridge Drive E
Eatonville, WA 98328
(888) 848-3827
Determined to be
functionally equivalent to BMP C105: Stabilized Construction Entrance,
The Bag Lady, Inc.
11124 Valley Avenue East
Puyallup, WA, 98372
(253) 770-8606
Determined to be functionally equivalent to BMP C233: Silt Fence
Filtrexx®
35481 Grafton Eastern Rd
Grafton, Oh 44044
(440) 926-2607
Disregard contact information in each letter and contact Douglas Howie at 360-407-6444 with questions.
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.html.
