Presentation on theme: "Spokane River Urban Waters Progress"— Presentation transcript:
1Spokane River Urban Waters Progress By Arianne FernandezWA Dept of EcologyMarch 2013
2Urban Waters Objectives Find and eliminate sources of contaminants of concernPolychlorinated Biphenyls (PCB): 303(d) listedPolybrominated Diphenyl Ethers (PBDE)Dioxin/FuranLeadCadmiumZinc
3Urban Waters Initiative Spokane Regional Health District ResourcesTCPResearchCleanupWQPreventionRegulationHWTRLocal Source Control Specialist PartnershipUrban Waters InitiativeIncrease efforts to clean up what we know about.Find and prevent point and nonpoint source contamination to prevent recontamination as they had happen in the Duwamish Waterway.Spokane Regional Health District
5Source Tracking Plan Start in city of Spokane Up-the-pipe stormwater and CSO tracing.Union basinCombined sewer overflow #34Erie basinBusiness visits by SRHD Local Source Control Specialist, Sandy Phillips.Historical analysisOutfall samplingSewer tracingRoad data provided by Bing Maps
6Stormwater Source Tracking Union BasinErie BasinCSO 34Cochran
7ppq (pg/L) X 1000 = ppt (ng/L) X 1000 = ppb (ug/L) X 1000 = ppm (mg/L) PCB Problem FactorsLow-level tracingSmall sourcesHistorical contaminationNot all data is comparableAir deposition“PCB-free” mythContaminant in everyday productsRegulatory limitsStormwaterHuman dimensionppq (pg/L) X 1000 = ppt (ng/L) X 1000 = ppb (ug/L) X 1000 = ppm (mg/L)
8Union Basin Sample Locations Parameter Stormwater (ng/L) Sample IDCollection DateMatrixTotal PCB-8082 (ng/Kg or ng/L)Total PCB-1668 (ng/L)SeasonStorm event Precip. from Felts Field (in)Sample TypeUpstream Trent Ave BranchTrent_ ST1/24/2011sw--188WINTER0.49Grab5/16/201186.5SPRING0.29Crestline-Springfield Ave BranchCOOK - SPRG6/25/2009sed980,000SUMMERnaComp. scoopCR/ADM8/12/20092260.27CRSPADM2/16/2010324.7No data6/4/201014.10.567/2/20101142230.281/13/201133.40.333/28/2011 QA/QC in progressNapa St-Springfield Ave. BranchNAPA-SPRG9/9/2010285FALL0.061037457/29/201117,000Union OutfallUNIONLPT6/8/200973.010/2/200958.20.114600.124/29/201060.60.482551/7/201155.30.197/13/2011QA/QC in progress 0.42Sample LocationsParameterStormwater (ng/L)Storm-drain Sediment (ng/Kg)MinMaxPCB (ppt)0.45828.4154.7813.6
9PCB Hot Spots Aroclor 1260: Transformers Hydraulic fluid Synthetic resinDedusting agentAlso metals and dioxin/furan sources
10City Parcel Area Progress Over 8,000 tons of heavily PCB-contaminated soils and waste materials were dug up and removed from this site. The cleanup action is now complete at this property.
11Additional Work and Findings Mapping tool enhanced source tracing and spatial analysis.Inadvertent production in everyday products significantly above local limits (ug/L and mg/L vs. pg/L).Air Deposition Literature Review – Air deposition may contribute to local stormwater load.NE Lakes Background Study - Refined knowledge of air deposition influence to sediment and fish.ppq (pg/L) X 1000 = ppt (ng/L) X 1000 = ppb (ug/L) X 1000 = ppm (mg/L)
12General ConclusionsBusiness visits have limited effectiveness for finding most CoC sources, but good for metals.Source tracing contamination at low concentrations presented unforeseen challenges for regulators and the regulated community. These include:Lack of knowledge for clean, ultra trace sampling techniques.Lack of knowledge regarding how to perform quality control on results.Current regulations do not recognize the low-level, full congener analytical method (1668) for compliance.
13General ConclusionsSources of CoC to the Spokane river are more diffusethan originally suspected.The Spokane River watershed is unique and maybe compounding the issue of elevated CoC in fishtissue. Unique properties include:Low total suspended solids to bind contaminantsLarge urban watershed discharging to small waterbodyReady aquifer exchange that modifies PCB congener behaviorHighly porous soil over fast moving aquifer
14Urban Waters Tools Collaboration is key! SourceTracingTool DevelopmentCollaboration is key!Spokane River Regional Toxics Task Force-Tribe-Local government-Citizen groups-State government-Federal government-IndustryFacilitationBMPImplementationRegulationTrainingSite CleanupsSource tracingData integrationModeling – aquifer transport modelSampling up the pipeMulti-media source control checklist inspections based off of a similar checklist used by Seattle Public UtilitiesContamination does not compartmentalize itself into neat packets of regulations.IncentivesEducationClean Water
15On-the-ground Next Steps Out of the pipe and onto the groundFollow the fishAssist SRRTTF and other source control effortsCross boundary workAir depositionIn-river work
16Next Steps Fate and transport model Air deposition data Mapping tool for faster source tracing and organizing large amounts of data for spatial analysisData consolidation across agencies and facilitiesLong-term in-river monitoring with additional sites and techniques tailored to our unique systemPattern identificationGeneral product listsRegulation and sample method updates