SELECTED PROJECTS:

Paine Field Airport NPDES Permit Compliance and Monitoring

(Everett, WA)  Landau Associates has assisted Snohomish County in complying with the requirements of the Washington Industrial Stormwater General Permit (Permit) at the Snohomish County Airport (a.k.a. Paine Field) since 2003. Our services included preparation and implementation of a Stormwater Pollution Prevention Plan (SWPPP) for the airport, conducting quarterly stormwater monitoring, submittal of Discharge Monitoring Reports, and recommending and implementing stormwater best management practices (BMPs) to respond to exceedances of benchmark values. To clearly define the County’s role and responsibility under the Permit, the SWPPP distinguished between County-owned facilities that were required to obtain coverage under the Permit and the tenant-owned and/or -operated facilities that were either covered under separate permits or that did not require coverage under the Permit. Through our support to Snohomish County, the airport has remained in full compliance with the Permit and Permit benchmarks since 2003. Landau Associates also developed a Stormwater Management Implementation Plan to assist the Airport in meeting the requirements of the County’s Phase 1 Municipal Stormwater General Permit. The plan provides detailed procedures for the Airport to implement the municipal permit’s requirements for stormwater facility mapping, operations and maintenance, and for implementing an illicit connection/discharge, detection, and elimination program. 

Read about Landau Associates' design of zinc removal treatment bins to treat runoff from airport hangar buildings, part of Snohomish County Executive's Puget Sound Initiative Paine Field Stormwater Zinc Pilot Project, at http://www.snohomishcountywa.gov/DocumentCenter/View/42629