TagDeicing(30)

Port of Seattle technical appendices (Volume 2) to the study examining effects of runway deicing on dissolved oxygen (DO) in receiving waters at Seattle-Tacoma International Airport, covering the 1999-2000 winter season. Includes QA/QC and field methods for Hydrolab instruments, Northwest Ponds DO profile data collection, continuous monitoring data assessment, tracer plots for each monitoring location,

Port Of Seattle report (AR 043696, Volume 1) examining effects of runway deicing chemicals on dissolved oxygen in receiving waters at Seattle-Tacoma International Airport for the 1999-2000 winter season. Documents ground deicing chemical applications including potassium acetate (PA, Cryotech E36 LRD), sodium acetate (SA), and calcium magnesium acetate (CMA) on airfield, ramp, and landside roadways.

Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport (STIA) covering the period July 1, 1999 through June 30, 2000, prepared by Scott Tobiason, Environmental Management Specialist, Aviation Environmental Programs, Port Of Seattle. Report AR 045668 documents stormwater sampling results from STIA storm drainage subbasins including total petroleum hydrocarbons (TPH), fecal coliforms, suspended solids, turbidity, biochemical

Annual stormwater monitoring report prepared by Scott Tobiason, Environmental Management Specialist, Aviation Environmental Programs, Port Of Seattle, covering Sea-Tac Airport (STIA) for the period July 1, 1999 through June 30, 2000. Report covers STIA storm drainage subbasins, sampling locations, grab and composite sample results for total petroleum hydrocarbons (TPH), fecal coliforms, suspended solids, turbidity, biochemical

EPA report (EPA 821-R-00-001, January 2000) presenting a preliminary data summary of airport deicing operations. Covers aircraft and pavement deicing/anti-icing fluids including ethylene glycol-based compounds, fluid types, fluid application methods, variables affecting fluid use, nonchemical deicing methods, and NPDES/Clean Water Act wastewater concerns. Data collected via 1993 screener questionnaire, airport/vendor/POTW mini-questionnaires, EPA site visits, EPA

Dissolved Oxygen Deicing Study prepared by Cosmopolitan Engineering Group for Port Of Seattle Sea-Tac International Airport (AR042698, August 1999), examining impacts of de-icing agents from airport stormwater runoff on Miller Creek and Des Moines Creek, including BOD5 discharges to NW Ponds and Lake Reba. Accompanied by Washington State Department of Ecology (NWRO) response letter dated

In this October 1999 letter, the Washington State Department of Ecology reviewed a study by the Port of Seattle examining how de-icing chemicals used at Sea-Tac International Airport affect water quality in Miller and Des Moines Creeks. Ecology found significant deficiencies in the study, including incorrect water quality classifications, too few de-icing events sampled, and inadequate monitoring methods, concluding that dissolved oxygen levels in both creeks frequently failed to meet applicable standards. The agency requested that the Port resubmit the study with corrections before a determination could be made about whether de-icing operations were being properly managed to protect local waterways.

Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport (STIA) covering the period July 1, 1998 through June 30, 1999, prepared by Port Of Seattle, September 1999. Report AR 042872 covers NPDES stormwater sampling at STIA storm drainage subbasins including grab and composite sample results for total petroleum hydrocarbons (TPH), fecal coliforms, suspended solids (TSS), turbidity,

This is the Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport, covering the period from July 1, 1998 through June 30, 1999, prepared by the Port of Seattle. The report documents water quality sampling results from airport storm drainage systems, including measurements of petroleum hydrocarbons, metals, fecal coliforms, and the effects of aircraft and ground deicing activities on runoff. It includes data summaries, outfall inspections, and source tracing studies aimed at tracking and managing stormwater pollution from airport operations.

Memorandum from Ken Ludwa of Parametrix, Inc. to Elizabeth Leavitt, dated June 29, 1999, reviewing the Draft De-Icing Dissolved Oxygen Report related to Sea-Tac Airport runway and taxiway acetate washoff. Comments address dissolved oxygen (DO) water quality standards (8 mg/L Class A, 9.5 mg/L Class AA) in Miller Creek and Des Moines Creek, NW Ponds,