TagKing County(412)

King County Department of Natural Resources draft review comments (AR034844-034846) on the Port Of Seattle / Parametrix Inc. December 2001 Low Streamflow Analysis – Summer Low Flow Impact Offset Facility Proposal. Review evaluates HSPF hydrologic modeling, impact assessment, and conceptual design of low-flow offset facilities for Miller Creek and Walker Creek against Washington State Department

In December 2001, Hart Crowser, Inc. submitted Washington State Department of Revenue forms to the Department of Ecology certifying an environmental remedial action at a property located at the corner of NE 4th Street and 108th Avenue in Bellevue, King County. The Professional Certification was signed by Matthew F. Schultz, P.E., confirming that the cleanup was conducted independently and in a manner consistent with Washington's Model Toxics Control Act (MTCA). The filing sought a Washington State sales tax exemption and business and occupation tax credit for the environmental remedial action project (J-7600000).

These draft meeting notes from October 30, 2001 document a technical review session in which Port of Seattle consultants disclosed and explained several errors found in the low streamflow modeling for the Sea-Tac Airport Third Runway project. The key errors included a 1/24th magnitude conversion factor mistake in embankment fill data input, incorrect input files used for embankment modeling, and an overlap in which approximately 8 acres of the Walker Creek embankment appeared to be counted in both the Hydrus embankment model and the HSPF stream model. The meeting outlined corrective steps to be taken by the Port's consulting team to fix these errors before finalizing the revised Low Streamflow Analysis required under 401 Permit conditions.

Meeting notes from an October 30, 2001 technical session addressing errors discovered in the low streamflow modeling for Sea-Tac International Airport's Third Runway project. Consultants identified six modeling errors, including a conversion factor mistake that caused embankment flow contributions to be understated by a factor of 24, along with incorrect input files and improper groundwater routing. Representatives from the Port of Seattle, King County, the Department of Ecology, and the Army Corps of Engineers agreed on corrective revisions to be incorporated into a revised Low Streamflow Analysis and Summer Low Flow Impact Offset Facility Proposal required under the 401 Permit.

Email from Kelly Whiting (King County Department of Natural Resources, Water and Land Resources Division) to Ann Kenny and Raymond Hellwig, dated October 25, 2001, summarizing a pre-meeting briefing on revised low flow hydrologic modeling related to Port Of Seattle airport embankment impacts. Discusses Hydrocomp (Norm Crawford) independent review findings, HSPF modeling errors including incorrect

Email chain dated October 19, 2001 among Kathryn Snider (Floyd Snider McCarthy, Inc.), Kelly Whiting (Metro King County), Ann Kenny, Keith Smith (Port Of Seattle Water Resources Manager), and David Masters regarding a proposed Low Flow Meeting scheduled for October 30, 2001 at Kate Snider’s office (8:30–11:30 AM). Kelly Whiting requests a meeting agenda or

PCHB case No. 01-133, Volume 3 of 3 of Port Of Seattle’s memorandum opposing Airport Communities Coalition (ACC) motion for stay, containing Declaration of Paul S. Fendt. Includes August 3, 2001 letter from King County Department of Natural Resources to Ann Kenny, Senior Permit Specialist, Washington Department of Ecology Northwest Regional Office, Bellevue WA 98008-54552,

Declaration of Edward O’Brien, Washington Department of Ecology Water Quality Program employee since 1979, filed in PCHB No. 01-133 (Airport Communities Coalition v. State of Washington Department of Ecology and Port Of Seattle). O’Brien describes his familiarity with the 1992 Stormwater Management Manual for Puget Sound, the 1999 Draft Manual, and the final September 27,

This document is an email chain from September 2001 in which King County's David Masters notifies Ann Kenny that spending on a contract for technical review services provided to the Washington State Department of Ecology has exceeded its $95,000 limit by $23,695. Masters proposes amending the contract to increase the budget by $170,000 to a new total of $265,000, covering anticipated work such as low-flow analysis, preparation of appeal materials, and potential expert witness testimony. Ann Kenny forwarded the information to Michael Cheyne to facilitate the contract amendment process.

Letter dated August 3, 2001 from Pam Bissonnette, Director of King County Department of Natural Resources, to Ann Kenny, Senior Permit Specialist at Washington Department of Ecology Northwest Regional Office, conveying King County’s technical review findings on the Port Of Seattle’s Comprehensive Stormwater Management Plan (SMP) for Master Plan Update (MPU) Improvements at Seattle-Tacoma International