TagStormwater(64)

Cover page of the Washington State Department of Ecology Water Quality Program's Stormwater Management Manual for Western Washington, comprising five volumes covering minimum technical requirements, construction stormwater pollution prevention, hydrologic analysis, source control BMPs, and runoff treatment BMPs. Published August 2001, Publication Numbers 99-11 through 99-15, replacing Publication Number 91-75; document bears archive marking AR 053462.

Cover page of the Washington State Department of Ecology Water Quality Program's Stormwater Management Manual for Western Washington, published August 2001 (Publication Numbers 99-11 through 99-15). The manual comprises five volumes covering minimum technical requirements, construction stormwater pollution prevention, hydrologic analysis, source control BMPs, and runoff treatment BMPs, and carries archive reference number AR 053462.

Aerial photograph showing the southern or western perimeter of a major commercial airport, with runways, taxiways, and terminal gates visible alongside an industrial/warehouse district. A newly constructed stormwater retention pond with exposed sandy berms is prominent in the mid-ground, consistent with airport drainage or environmental mitigation infrastructure.

Aerial photograph showing Seattle-Tacoma International Airport infrastructure, including a runway threshold marked '34' visible in the lower right, active aircraft at gates on the right side, and a large stormwater retention pond under construction in the foreground with exposed sandy soil. The image likely documents environmental mitigation or drainage infrastructure development adjacent to airport operations.

Aerial photograph showing a large retention/detention pond under construction on the south or west perimeter of Seattle-Tacoma International Airport, with active earthmoving equipment and grading visible to the right. Airport runways, terminal buildings, and parked aircraft are visible in the background, consistent with Sea-Tac Airport infrastructure documentation.

Aerial photograph showing a large retention or stormwater pond under active construction adjacent to Sea-Tac Airport's runway and taxiway complex. Heavy equipment is visible on the eastern side of the pond, with the airport terminal and aircraft gates visible in the background; mountains are visible on the horizon.

Aerial photograph showing large-scale earthwork and grading activity adjacent to airport runways, with what appears to be a stormwater detention or treatment facility (rectangular basin) under construction in the foreground. Construction equipment is visible across the graded area, and the site borders a wooded residential neighborhood and a road intersection.

Aerial photograph showing a runway and taxiway system in the upper portion of the frame, with a retention or stormwater pond under apparent construction or remediation in the mid-ground. The foreground shows warehouse and distribution facilities with truck loading areas, parking lots, and a multi-story office building, consistent with an airport-adjacent industrial zone.

Aerial photograph showing a large airport's runway and taxiway system in the background, with a forested buffer zone and what appear to be stormwater retention or water treatment ponds in the foreground. The layout, scale, and Pacific Northwest landscape context (evergreen trees, mountain range, urban development) are consistent with a major regional airport facility.

Aerial photograph looking north toward Seattle-Tacoma International Airport, showing a runway and taxiway system in the mid-ground, a large retention/stormwater pond under construction in the middle distance, and commercial/industrial development in the foreground. The Boeing manufacturing facilities and Renton area are visible in the upper background, consistent with the airport's geography south of Seattle.