TagThird Runway(1098)

This legal declaration by stormwater engineer Paul S. Fendt, filed before Washington's Pollution Control Hearings Board, addresses the Port of Seattle's Master Plan Update and its potential impacts on local stream flows in Miller, Walker, and Des Moines Creeks near Sea-Tac Airport. Fendt explains the use of the HSPF hydrologic model and a 2-year, 7-day low flow standard to assess and mitigate summer streamflow impacts resulting from planned airport expansion projects. He concludes that revised analysis shows no significant changes to previously calculated low flow impacts.

A November 2001 letter from Northwest Hydraulic Consultants, written on behalf of the Airport Communities Coalition, raises serious technical objections to the Port of Seattle's proposed plan to manage low streamflow impacts from SeaTac Airport's third runway construction on Miller, Walker, and Des Moines Creeks. The letter argues that the Port's analysis contains critical flaws, including an incorrect assumption that virtually all runway runoff infiltrates into adjacent grassed filter strips, and that the use of hourly rather than shorter time intervals in hydrological modeling causes stream impacts to be underestimated and mitigation storage facilities to be undersized. The consultants also express concern that the Port was not adequately addressing outstanding public comments or certification requirements set by regulatory agencies such as the Washington Department of Ecology.

Port Of Seattle’s response to Airport Communities Coalition (ACC) motion to supplement the record in PCHB Case No. 01-160, filed November 26, 2001. Port argues ACC’s hearsay emails and Keith Smith letter regarding revisions to the Low Streamflow Analysis do not warrant supplementing the record on the motion to stay. Document addresses HSPF groundwater model

Declaration by Roger A. Pearce, attorney for Port Of Seattle, filed in Pollution Control Hearings Board (PCHB) Case No. 01-160, Airport Communities Coalition v. Department of Ecology and Port Of Seattle. Identifies four exhibits submitted to Washington Department of Ecology under amended §401 Certification on JARPA Application No. 1996-4-02325: Exhibit A (Wetland A17 Restoration Plan,

Second Pre-Hearing Order issued by the Pollution Control Hearings Board (PCHB) in case PCHB No. 01-160, Airport Communities Coalition (ACC) v. State of Washington Department of Ecology and Port Of Seattle. Accepts 21 stipulated legal issues and adds issue 22 regarding Ecology’s reasonable assurance under §401 and applicable water quality laws concerning a stormwater detention

Declaration by Andrea Grad, paralegal at Helsell Fetterman LLP representing Airport Communities Coalition (ACC), filed November 16, 2001, in PCHB Case No. 01-160. Describes Public Disclosure Act request submitted November 5, 2001 to Ecology’s Northwest Regional Office (NWRO), resulting in receipt of 651 pages of documents. Attaches Exhibits A-D: (A) October 24, 2001 letter from

Port Of Seattle letter dated November 16, 2001 from Elizabeth Leavitt, Manager of Aviation Environmental Programs, to Ann Kenny at the Washington Department of Ecology Northwest Regional Office, transmitting the Third Runway Embankment Seepage and Groundwater Monitoring Plan in satisfaction of § 401 Water Quality Certification Order #1998-4-02325, Condition E.3. The plan, AR 052417–052419, covers

In November 2001, the Port of Seattle submitted a Third Runway Embankment Seepage and Groundwater Monitoring Plan to the Washington Department of Ecology as required by a § 401 Water Quality Certification order. The plan was designed to detect any impacts of the runway fill embankment on nearby receiving waters and groundwater, both during and after fill placement. The Port requested written approval of the plan from the Department of Ecology's Northwest Regional Office.

ACC (Airport Communities Coalition) motion filed with the Pollution Control Hearings Board (PCHB No. 01-160) seeking to supplement the evidentiary record on its motion for stay of the Section 401 Certification issued by Ecology on September 21, 2001, for the Third Runway Project at Sea-Tac Airport. Documents obtained via public records request to Ecology on

Port Of Seattle’s objections filed November 15, 2001 to three issues proposed by Airport Communities Coalition (ACC) in Pollution Control Hearings Board (PCHB) Case No. 01-160, concerning §401 certification for the Third Runway project. Objects to ACC Proposed Issues 11, 18, and 19: Issue 11 concerns dam safety permit requirements under WAC 173-175 and reasonable