SOURCE WATER ASSESSMENT SUMMARY BROCHURE

Transcription

1 SOURCE WATER ASSESSMENT SUMMARY BROCHURE PGE BEAVER GENERATING STATION PWS # WHAT IS A SOURCE WATER ASSESSMENT? The Source Water Assessment was recently completed by the Department of Environmental Quality (DEQ) and the Oregon Health Division (OHD) to identify the surface areas (and/or subsurface areas) that supply water to PGE Beaver Generating Station s public water system intake and to inventory the potential contaminant sources that may impact the water supply. WHY WAS IT COMPLETED? The Source Water Assessment was completed to provide information so that PGE Beaver Generating Station s public water system staff/operator, consumers, and community citizens can begin developing strategies to protect the source of their drinking water, and to minimize future public expenditures for drinking water treatment. The assessment was prepared under the requirements and guidelines of the Federal Safe Drinking Water Act (SDWA). WHAT AREAS ARE INCLUDED IN PGE BEAVER GENERATING STATION S DRINKING WATER PROTECTION AREA? The drinking water for PGE Beaver Generating Station is supplied by an intake on the Columbia River. This public water system serves approximately 65 citizens. The intake is located in the Beaver Creek - Columbia River Watershed in the Lower Columbia - Clatskanie Sub-Basin of the Lower Columbia Basin. The geographic area providing water to PGE Beaver Generating Station s intake (the drinking water protection area) extends upstream approximately 13 miles in an easterly direction and encompasses a total area of 89 square miles. The boundaries of the Drinking Water Protection Area are illustrated on the figure attached to this summary. WHAT ARE THE POTENTIAL SOURCES OF CONTAMINATION TO PGE BEAVER GENERATING STATION S PUBLIC DRINKING WATER SUPPLY? The primary intent of this inventory was to identify and locate significant potential sources of contaminants of concern The delineated drinking water protection area is primarily dominated by rural residential and agricultural land uses. The inventory focused on the area near the intake and in the sensitive areas near the sloughs. The potential contaminant sources identified include the PGE facility, grazing areas, several gas stations and vehicle maintenance shops, a boat servicing facility, various farming operations, some managed forest land, and the transmission line and transportation corridors. This provides a quick look at the existing potential sources of contamination that could, if improperly managed or released, impact the water quality in the watershed. WHAT ARE THE RISKS FOR OUR SYSTEM? A total of 21 potential contamination sources were identified within PGE Beaver Generating Station s drinking water protection area, all of which are high- to moderate-risk sources within sensitive areas. The sensitive areas within the PGE Beaver Generating Station drinking water protection area include areas with high soil permeability, high soil erosion potential, high runoff potential and areas within 1000 from the river/streams. The sensitive areas are those where the potential contamination sources, if present, have a greater potential to impact the water supply. The information in this assessment provides a basis for prioritizing areas in and around our community that are most vulnerable to potential impacts and can be used by the PGE Beaver Generating Station community to develop a voluntary Drinking Water Protection Plan. NEED MORE INFORMATION? PGE Beaver Generating Station s Source Water Assessment Report provides additional details on the methodology and results of this assessment. The full report is available for review at: If you would like additional information on our Source Water Assessment results, contact:

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3 1 Wells/Abandoned Abandoned Well - Inside building just Clatskanie Interview Within Moderate Improperly installed or maintained wells Wells PGE Property southwest of intake pier sensitive and abandoned wells may provide a direct conduit for contamination to groundwater and drinking water source. 2 Machine Shops Vehicle building immediately Clatskanie Interview Within Higher Spills, leaks, or improper handling of maintenance shop south of intake pier sensitive solvents, metals, and other chemicals or materials during transportation, use, storage and disposal may impact the 2/14/2003 Page 1 of 7

4 3 Drinking Water PGE Beaver Due west of intake point Clatskanie Database (2) Within Moderate Treatment chemicals and equipment Treatment Plants Facility Field- sensitive maintenance materials may impact Observation groundwater or surface water source. Interview Wastewater Higher Improper management of wastewater, Treatment treatment chemicals, or equipment Plants/Collection maintenance materials may impact Stations Above Ground Moderate Spills, leaks, or improper handling of stored Storage Tanks - materials may impact the drinking water Excluding Water supply. Parking Lots/Malls Higher Spills and leaks of automotive fluids in (> 50 Spaces) parking lots may impact the drinking water supply. Electrical/Electronic Manufacturing Moderate Spills, leaks, or improper handling of chemicals and other materials during transportation, use, storage, and disposal may impact the Chemical/Petroleum Higher Spills, leaks, or improper handling of Processing/Storage chemicals and other materials during transportation, use, storage and disposal may impact the Pesticide/Fertilizer/ Higher Leaks, spills and improper handling of Petroleum Storage, pesticides, fertilizers and petroleum Handling, Mixing, & products may impact drinking water Cleaning Areas Lagoons/Liquid Higher Improper seepage or overflows of liquid Wastes wastes may impact the drinking water 4 Grazing Animals (> Cattle Farm(s) - Area east of John Dist. Clatskanie Field- Within Higher Improper storage and management of 5 large animals or Private and Kallunki Rds. Observation sensitive animal wastes may impact drinking water equivalent/acre) supply. Concentrated livestock may contribute to erosion and sedimentation of surface water bodies. 2/14/2003 Page 2 of 7

5 5 Transmission Lines Natural Gas Just southwest of Clatskanie Field- Within Higher Construction and corridor maintenance - Right-of-Ways Pipeline Right of Kallunki and Mayger Rd. Observation sensitive may contribute to increased erosion and Way Interview turbidity in Overapplication or improper handling of pesticides or fertilizers may impact 6 Boat Beaver Valley Mayger Rd., just north of Clatskanie Field- Within Higher Spills, leaks, or improper handling of fuels, Services/Repair/Re Marine Hermo Rd. Observation sensitive septage, maintenance chemicals, finishing sandblasting wastes, paints, and other materials during transportation, use, storage and disposal may impact the 7 Automobiles - Gas Qunicy Store Mayger Rd. at Hermo Rd. Clatskanie Database (2) Within Moderate Spills, leaks, or improper handling of fuels Stations Field- sensitive and other materials during transportation, Observation transfer, and storage may impact the No similar location address or site name listed on Underground Storage Tank database. PWS may want to Above Ground Moderate Spills, leaks, or improper handling of stored Storage Tanks - materials may impact the drinking water Excluding Water supply. No similar location address or site name listed on Underground Storage Tank database. PWS may want to UST - Status Moderate Spills, leaks, or improper handling of stored Unknown materials may impact the drinking water supply. No similar location address or site name listed on Underground Storage Tank database. PWS may want to 2/14/2003 Page 3 of 7

6 8 Above Ground Unknown farming West side of Hermo Rd. Clatskanie Field- Within Moderate Spills, leaks, or improper handling of stored Storage Tanks - operation just north of McLean Observation sensitive materials may impact the drinking water Excluding Water Slough supply. Several large AST's (greater than 4,000 L). Farm Machinery Repair Moderate Spills, leaks, or improper handling of solvents and petroleum products during transportation, use, storage and disposal may impact the Several large AST's (greater than 4,000 L). 9 Managed Forest Fort James Co., All along Hermo Rd. on Clatskanie Field- Within Moderate Over-application or improper handling of Land - Broadcast Cottonwood both sides Observation sensitive pesticides or fertilizers may impact the Fertilized Areas Plantation drinking water source. Very large operation throughout floodplain. Numerous listings for "Fort James Operating Co." in the State Fire Marshall's database, yet none with addresses similar to this Managed Forest Higher Cutting and yarding of trees may Land - Partial contribute to increased erosion, resulting in Harvest (< 10 yrs.) turbidity and chemical changes (ex: Very large operation throughout floodplain. Numerous listings nitrates) in Over- for "Fort James Operating Co." application or improper handling of in the State Fire Marshall's pesticides or fertilizers may impact database, yet none with addresses similar to this 10 Crops - Irrigated Poysky End of Hermo Rd. Clatskanie Field- Within Higher Over-application or improper handling of (inc. orchards, Blueberries - (private gate) Observation sensitive pesticides/fertilizers may impact drinking vineyards, Private Farm water. Excessive irrigation may transport nurseries, contaminants or sediments to groundwater/surface water through runoff. Drip-irrigated crops are considered to be a low risk. 2/14/2003 Page 4 of 7

7 11 Automobiles - Fort James Co. - South end of Lewis Rd. at Clatskanie Field- Within Moderate Spills, leaks, or improper handling of Repair Shops Shop and Offices Collins Rd. Observation sensitive automotive fluids, solvents, and repair materials during transportation, use, storage and disposal may impact the Fleet/Trucking/Bus Moderate Spills, leaks, or improper handling of fuels, Terminals grease, solvents, and other materials from vehicle service, fueling, and parking areas may impact the drinking water Numerous listings for "Fort James Operating Co." in the State Fire Marshall's database, yet none with addresses similar to this location. Numerous listings for "Fort James Operating Co." in the State Fire Marshall's database, yet none with addresses similar to this location. Office Lower Spills, leaks, or improper handling of Buildings/Complexe chemicals and other materials stored and s used in maintenance or from parking areas Numerous listings for "Fort James Operating Co." in the may impact the State Fire Marshall's database, yet none with addresses similar to this location. 12 Crops - Irrigated Ken and Patsy's West side of Collins Rd. Clatskanie Field- Within Higher Over-application or improper handling of (inc. orchards, Blueberries Observation sensitive pesticides/fertilizers may impact drinking vineyards, water. Excessive irrigation may transport nurseries, contaminants or sediments to groundwater/surface water through runoff. Drip-irrigated crops are considered to be a low risk. 13 Grazing Animals (> R & K Farms - East side of Collins Rd. Clatskanie Field- Within Higher Improper storage and management of 5 large animals or Cattle at Beaver Slough Observation sensitive animal wastes may impact drinking water equivalent/acre) supply. Concentrated livestock may contribute to erosion and sedimentation of surface water bodies. 2/14/2003 Page 5 of 7

8 14 Grazing Animals (> Private Cattle Farm Erickson Dike/Beaver Clatskanie Field- Within Higher Improper storage and management of 5 large animals or Dike Rds. Observation sensitive animal wastes may impact drinking water equivalent/acre) supply. Concentrated livestock may contribute to erosion and sedimentation of surface water bodies. 15 Automobiles - Body PPG Collision East side of Mayger Rd., Clatskanie Field- Within Moderate Improper management of vehicle paints, Shops Repair Service south of Beaver Dike Rd. Observation sensitive thinners, and primer products may impact the 16 Automobiles - Body Qunicy Collision East side of Mayger Rd., Clatskanie Field- Within Moderate Improper management of vehicle paints, Shops Repair Service south of Beaver Dike Rd. Observation sensitive thinners, and primer products may impact (Chrysler) the 17 Transportation - Columbia River Northern boundary of Clatskanie Field- Within Higher Heavy river usage may contribute to River Traffic - DWPA Observation sensitive riverbank erosion and increased turbidity in Fuel and other chemical leaks, spills and emissions may also contribute to drinking water Upstream Reservoirs/Dams Moderate During major storm events, reservoirs may contribute to prolonged turbidity for downstream intakes for drinking water. Construction, fluctuating water levels, and heavy waterside use can increase erosion and turbidity in reservoir/drinking water source. 18 Transportation - Burlington Along base of hillside at Clatskanie Field- Within Higher Rail transport elevates the risk for Railroads Northern Railway floodplain level Observation sensitive leaks/spills of fuel & other haz. materials. Installation/maintenance of tracks may increase erosion & slope failure causing turbidity. Over-application/improper handling of pesticides may impact the 2/14/2003 Page 6 of 7

9 19 Transmission Lines High tension North of the town of Alston Alston Field- Within Higher Construction and corridor maintenance - Right-of-Ways power lines Observation sensitive may contribute to increased erosion and turbidity in Overapplication or improper handling of pesticides or fertilizers may impact 20 Transportation - State Highway 30 Across Beaver and Clatskanie Field- Within Higher Vehicle use increases the risk for leaks or Freeways/State Palmer Creek basins Observation sensitive spills of fuel & other haz. materials. Road Highways/Other building, maintenance & use can increase Heavy Use Roads erosion/slope failure causing turbidity. Over-application or improper handling of pesticides/fertilizers may impact water. 21 Septic Systems - Rural residential Throughout and along Clatskanie Field- Within Moderate If not properly sited, designed, installed, High Density ( > 1 properties Beaver Creek Observation sensitive and maintained, septic systems can system/acre) impact drinking water. Cumulative effects Numerous properties of varying density. of multiple systems in an area may impact Homesteads - Rural Lower If not properly sited, designed, installed, - Septic Systems and maintained, septic systems can (< 1/acre) impact drinking water. Use of drain Numerous properties of varying density. cleaners and dumping household hazardous wastes can result in groundwater Wells/Abandoned Wells Moderate Improperly installed or maintained wells and abandoned wells may provide a direct conduit for contamination to groundwater and drinking water source. Numerous properties of varying density. 2/14/2003 Page 7 of 7