| Study ID | SRUW-LibertyLake |
| Study Name | Spokane River Urban Waters-Liberty Lake Pilot Project |
| EIM Data Entry Review Status | Reviewed |
| Study Type | Source control - identifying and managing sources of contamination |
| Study Purpose | Begin to determine "background" concentrations of PCB, PBDE, dioxin/furan, and metals (lead, cadmium, zinc) from sanitary sewer and storm systems with no direct source. Begin to identify and distinguish between sanitary sewer and stormwater contributions of the above contaminants. Evaluate the feasibility of this pilot as an approach for further source tracing in the Spokane Basin. |
| Field Collection Date Range | 10/30/2008 - 2/19/2009 |
| Data First/Last Loaded Date |  |
| Data Last Updated Date | |
| Ecology Program or Other Responsible Entity | Ecy Water Quality Program, Eastern Region |
| Ecology Contact | Ted Hamlin |
| Ecology Monitoring Program | |
| Submitting Organization | |
| Study QA Planning Level | LEVEL 4: Approved QAPP or SAP. |
| Study QA Project Plan Description | Fernandez, A. and T. Hamlin. 2008. Sampling and Analysis Plan (SAP) and Quality Assurance Project Plan (QAPP) for the Liberty Lake Source Trace Study Regarding PCB, PBDE, Metals, and Dioxin/Furan. Washington Department of Ecology, Olympia, WA. The goals of this study include:
1. Determining the urban “background” concentration range of CoC from wastewater and storm systems with no apparent industrial point source. For the purpose of this study, background is defined as the urban concentrations of CoC where no known point source exists.
2. Beginning to identify and distinguish between point and non-point sources that contribute CoC to the Spokane River and Spokane Valley-Rathdrum Prairie Aquifer.
3. Evaluating the pilot study?s feasibility as an approach for further source tracing in the Spokane basin. |
| Study QA Assessment Level | Level 4: Data Verified and Assessed for Usability in a Formal Study Report |
| Study Result Description | Our sample size and localized area allowed us to tentatively identify urban background concentrations from wastewater and storm systems. It did not, however, allow us to make a statistical determination. The results of this study helped Ecology understand the movement of the contaminants of concern within wastewater and stormwater systems and confirmed the studies feasibility. |
| Study Comment | This project was conducted in 2008-2009 but the data was not loaded to EIM until 2015. Data from report tables was entered into EIM Study - did not have access to original raw lab data files for loading. |
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