SOURCE WATER ASSESSMENT SUMMARY BROCHURE

Transcription

1 SOURCE WATER ASSESSMENT SUMMARY BROCHURE WINSTON-DILLARD WATER DISTRICT PWS # WHAT IS A SOURCE WATER ASSESSMENT? The Source Water Assessment was recently completed by the Department of Environmental Quality (DEQ) and the Oregon Department of Human Services (DHS) to identify the surface areas (and/or subsurface areas) that supply water to Winston-Dillard Water District 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 Winston-Dillard Water District 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 WINSTON- DILLARD S DRINKING WATER PROTECTION AREA? The drinking water for Winston-Dillard is supplied by an intake on the South Umpqua River. This public water system serves approximately 5,500 citizens. The intake is located in the Olalla Creek/Lookingglass Creek Watershed in the South Umpqua Sub-Basin of the Southern Oregon Coastal Basin. There are eleven other public water systems located upstream of the Winston-Dillard intake that obtain their drinking water from the South Umpqua River or its tributaries. This source water assessment addresses the geographic area providing water to Winston-Dillard s intake (Winston-Dillard s portion of the drinking water protection area) between Winston-Dillard s intake and the next upstream intake for Roseburg Forest Products. The boundaries of the Drinking Water Protection Area are illustrated on the figure attached to this summary. Information on Winston-Dillard s protection area upstream of the Roseburg Forest Products intakes (including the areas upstream of the other South Umpqua Sub-Basin intakes) is summarized in Winston- Dillard s assessment report. In addition, the drinking water intake for Roberts Creek Water District is located on the South Umpqua River downstream of Winston-Dillard s intake. Activities and impacts in the Winston-Dillard drinking water protection area have the potential to also impact downstream users. A schematic of South Umpqua Basin Drinking Water Protection Areas is attached. The geographic area providing water to Winston-Dillard s intake (Winston-Dillard s portion of the drinking water protection area) extends upstream approximately 182 miles (1,799 stream miles including the area upstream of the Roseburg Forest Products intake) and encompasses a total area of 174 square miles (1,629 square miles including the area upstream of the Roseburg Forest Products intake). Included in this area are a number of tributaries, including Lookingglass Creek (and its numerous tributaries including Olalla, Berry, Tenmile, and Morgan Creeks), Brockway Creek, Squaw Creek, and Kent Creek. The protection area within an 8-hour travel time from the intake extends approximately 16 miles upstream of the Winston-Dillard intake. It is recommended that the water systems and community consider increased protection within an 8-hour travel time from the intake since eight hours should provide adequate response time to protect the integrity of the public water system intake should a spill or release occur at any crossing or discharge point to the stream. The South Umpqua River intake is located at an approximate elevation of 520 feet and the upper edge of the watershed is located at an elevation of approximately 3,546 feet at Nickel Mountain feet.

2 WHAT ARE THE POTENTIAL SOURCES OF CONTAMINATION TO WINSTON-DILLARD S PUBLIC DRINKING WATER SUPPLY? The primary intent of this inventory was to identify and locate significant potential sources of contaminants of concern. Multiple land uses including residential/municipal, commercial/ industrial, and agricultural/forest land uses are present within the delineated drinking water protection area. The potential contaminant sources identified include high density housing, schools, city sewer lines, cemeteries, a drinking water treatment plant, substations, a former landfill, campgrounds, rural fire departments, rural homesteads, high density septic systems, a timber and wood processing company, store/gasoline stations, vehicle repair shops, trucking companies, a veterinary clinic, a former nickel mine, irrigated crops, non-irrigated crops, grazing animals, ponds and lagoons, confined animal feeding operations, managed forest lands, transportation corridors, storm water outfalls, large capacity septic systems, historic gas stations, boarding kennels, an upstream reservoir, and above ground storage tank locations. 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 36 potential contaminant sources were identified in Winston-Dillard s drinking water protection area. Of these, 34 are located in the sensitive areas and 29 are high- to moderate-risk sources within sensitive areas. The sensitive areas within the Winston-Dillard 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 Winston-Dillard community to develop a voluntary Drinking Water Protection Plan. NEED MORE INFORMATION? Winston-Dillard s Source Water Assessment Report provides additional details on the methodology and results of this assessment. The full report is available for review at: Contact the Winston-Dillard Water District staff if you would like additional information on these Source Water Assessment results.

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4 1 Housing - High High Density Winston and Dillard Winston Field- Within Moderate Improper use, storage, and disposal of Density (> 1 Housing Observation sensitive household chemicals may impact the House/0.5 acres) drinking water supply. Stormwater run-off Housing in Winston and Dillard. or infiltration may carry contaminants to drinking water supply. 2 Transportation - Highway 42 Runs E-W Through the Winston Field- Within Higher Vehicle use increases the risk for leaks or Freeways/State DWPA Observation sensitive spills of fuel & other haz. materials. Road Highways/Other building, maintenance & use can increase Highway 99 also runs through Heavy Use Roads erosion/slope failure causing turbidity. the DWPA. Over-application or improper handling of pesticides/fertilizers may impact water. 3 Crops - Irrigated Irrigated Crops West of Intake Winston Field- Within Higher Over-application or improper handling of (inc. orchards, Observation sensitive pesticides/fertilizers may impact drinking vineyards, water. Excessive irrigation may transport Other irrigated crops throughout nurseries, contaminants or sediments to the DWPA. groundwater/surface water through runoff. Drip-irrigated crops are considered to be a low risk. 4 Crops - Nonirrigated Non-Irrigated Throughout the DWPA Winston Field- Within Lower Over-application or improper handling of (inc. Christmas Crops Observation sensitive pesticides/fertilizers may impact drinking trees, grains, grass water. Some agricultural practices may seed, pasture) result in excess sediments discharging to surface waters, but non-irrigated crops are generally considered to be a low risk. 5 Transportation - Southern Pacific Runs Through Dillard Dillard Field- Within Higher Rail transport elevates the risk for Railroads Railroad 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 3/12/2003 Page 1 of 8

5 6 Schools Civil Bend School Elwood Drive Winston Field- Within Moderate Over-application or improper handling of Observation sensitive cleaning products, pesticides or fertilizers used on the school grounds may impact There are other schools throughout the DWPA. drinking water. Vehicle maintenance wastes may contribute contaminants. 7 Sewer Lines - Close City Sewer Lines Winston and Dillard Winston Field- Within Moderate If not properly designed, installed, and Proximity to PWS Observation sensitive maintained, sewer lines can impact drinking water, especially adjacent to a waterbody or within the 2-year time-of-travel zone for drinking water wells. 8 Stormwater Outfalls Stormwater Into S. Umpqua River Winston Within Higher Stormwater run-off may contain Just Above Intake sensitive contaminants from residential (homesites and roads), commercial/industrial, and agricultural use areas. A 3 foot diameter pipe discharges into the South 9 Large Capacity Large Capacity Throughout the DWPA Winston Field- Within Moderate If not properly sited, designed, installed, Septic Systems Septic Systems Observation sensitive and maintained, septic systems can (serves > 20 impact drinking water. Several large capacity septic people) - Class V UICs systems within the DWPA that are associated with rural schools and mobile home 10 Homesteads - Rural Rural Throughout the DWPA Winston Field- Within Lower If not properly sited, designed, installed, - Septic Systems Observation sensitive and maintained, septic systems can (< 1/acre) impact drinking water. Use of drain With associated heating oil cleaners and dumping household hazardous wastes can result in groundwater 11 Cemeteries - Pre- Cemetery West of Intake Winston Field- Within Lower Embalming fluids (for example, arsenic) 1945 Observation sensitive and decomposition by-products may impact drinking water supply. There are other cemeteries within the DWPA. 3/12/2003 Page 2 of 8

6 12 Historic Gas Brockway Store Highway 42 Brockway Database (2) Within Higher Historic spills, leaks, or improper handling Stations Field- sensitive of solvents and petroleum products may Observation impact the drinking water supply. There are other historic gas Abandoned underground storage tanks stations within the DWPA. 13 Grazing Animals (> Grazing Animals Throughout the DWPA Winston Field- Within Higher Improper storage and management of 5 large animals or Observation sensitive animal wastes may impact drinking water equivalent/acre) supply. Concentrated livestock may contribute to erosion and sedimentation of surface water bodies. 14 Wood Roseburg Forest HWY 99, Mile Post 3 Dillard Database (2) Within Higher Spills, leaks, or improper handling of Preserving/Treating Products Field- sensitive chemicals and other materials during Observation transportation, use, storage and disposal The ECSI site is NFA. may impact the drinking water supply. Wood/Pulp/Paper Higher Spills, leaks, or improper handling of wood Processing and preservatives and other chemicals during transportation, use, storage and disposal may impact the drinking water supply. The ECSI site is NFA. Above Ground Moderate Spills, leaks, or improper handling of stored Storage Tanks - materials may impact the drinking water Excluding Water supply. The ECSI site is NFA. UST - Lower Spills or improper handling during tank Upgraded/Registere filling or product distribution may impact d - Active the drinking water supply. The ECSI site is NFA. UST - Status Moderate Spills, leaks, or improper handling of stored Unknown materials may impact the drinking water supply. The ECSI site is NFA. 3/12/2003 Page 3 of 8

7 15 Mines/Gravel Pits Roseburg Forest HWY 99 Dillard Database (2) Within Higher Spills, leaks, or improper handling of Products - Quarry Field- sensitive chemicals and wastes generated in mining and Disposal Site Observation operations or from heavy equipment may impact the drinking water supply. Landfill/Dumps Higher Water percolating through the landfill waste material may transport contaminants to groundwater or surface water supply. 16 Lagoons/Liquid Roseburg Forest HWY 99 Dillard Field- Within Higher Improper seepage or overflows of liquid Wastes Products - Observation sensitive wastes may impact the drinking water Lagoons and Lagoons and ponds are Ponds associated with the lumber mill. 17 Drinking Water Roseburg Forest HWY 9, Mile Post 3 Dillard Field- Within Moderate Treatment chemicals and equipment Treatment Plants Products - Observation sensitive maintenance materials may impact Drinking Water groundwater or surface water source. Treatment Plant 18 Kennels (> 20 Pens) Glen Ivy Boarding HWY 42 West of Intake Brockway Field- Within Moderate Improper storage, management, and Kennels Observation sensitive disposal of animal wastes and wastewater in areas of concentrated animals may impact drinking water. 19 Upstream Ben Irving Berry Creek Ollala Field- Within Moderate During major storm events, reservoirs Reservoirs/Dams Reservoir and Park Observation sensitive 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. Parks Moderate Over-application or improper handling of pesticides/fertilizers may impact drinking water. Excessive irrigation may cause transport of contaminants through runoff. Heavy use along edge of waterbody may contribute to erosion, causing turbidity. 3/12/2003 Page 4 of 8

8 20 Confined Animal North Craft Dairy Near Ollala Creek Ollala Field- Within Higher Improper storage and management of Feeding Operations Observation sensitive animal wastes and wastewater in areas of (CAFOs) concentrated livestock may impact drinking water. 21 Utility Stations - Substation HWY 42 Near Porter Porter Field- Within Higher Spills, leaks, or improper handling of Maintenance Observation sensitive chemicals and other materials including Transformer PCBs during transportation, use, storage and disposal may impact the drinking water 22 Automobiles - Gas Porter Creek Haven Lane Porter Database (2) Outside Moderate Spills, leaks, or improper handling of fuels Stations Field- sensitive and other materials during transportation, Observation areas. transfer, and storage may impact the Also Ten Mile Store and Gas drinking water supply. Station. UST - Status Moderate Spills, leaks, or improper handling of stored Unknown materials may impact the drinking water supply. Also Ten Mile Store and Gas Station. 23 Landfill/Dumps Former Landfill North of Lookingglass Lookingglas Within Higher Water percolating through the landfill waste sensitive material may transport contaminants to groundwater or surface water supply. No visual observation of site - site location is based on 24 Automobiles - Gas Mr. J's HWY 99 Dillard Field- Within Moderate Spills, leaks, or improper handling of fuels Stations Observation sensitive and other materials during transportation, transfer, and storage may impact the drinking water supply. 3/12/2003 Page 5 of 8

9 25 Fleet/Trucking/Bus School Bus Shop - Hult Avenue Dillard Database (2) Within Moderate Spills, leaks, or improper handling of fuels, Terminals Douglas County Field- sensitive grease, solvents, and other materials School District Observation from vehicle service, fueling, and parking LUST site is NFA. areas may impact the drinking water Above Ground Moderate Spills, leaks, or improper handling of stored Storage Tanks - materials may impact the drinking water Excluding Water supply. LUST site is NFA. Automobiles - Repair Shops Moderate Spills, leaks, or improper handling of automotive fluids, solvents, and repair materials during transportation, use, storage and disposal may impact the drinking water supply. LUST site is NFA. 26 Fleet/Trucking/Bus Terrain Tamers Dyke Avenue Dillard Field- Within Moderate Spills, leaks, or improper handling of fuels, Terminals Trucking Observation sensitive grease, solvents, and other materials from vehicle service, fueling, and parking areas may impact the drinking water 27 Medical/Vet Offices River Valley HWY 99 Dillard Database (2) Within Lower Spills, leaks, or improper handling of x-ray, Veterinary Center Field- sensitive biological, chemical, and radioactive Observation wastes and other materials during transportation, use, storage and disposal may impact the drinking water supply. 28 Campgrounds/RV Mooney Boy HWY 42 Tenmile Field- Within Moderate Leaks or spills of automotive fluids or Parks Scout Campground Observation sensitive improperly managed septic systems and wastewater disposal may impact drinking There are other campgrounds within the DWPA. water supply. Heavy usage along edge of waterbody may contribute to erosion, causing turbidity. 29 Fire Station Rural Fire Tenmile Tenmile Within Lower Spills, leaks, or improper handling of Departments sensitive chemicals and other materials during transportation, use, storage and disposal may impact the drinking water supply. Rural fire departments are found in Dillard, Tenmile and Lookingglass. 3/12/2003 Page 6 of 8

10 30 Septic Systems - High Density Throughout Porter Creek, Porter Field- Within Moderate If not properly sited, designed, installed, High Density ( > 1 Septic Systems Tenmile and Lookingglass Observation sensitive and maintained, septic systems can system/acre) impact drinking water. Cumulative effects of multiple systems in an area may impact drinking water supply. 31 Managed Forest Fertilized Forest Throughout the DWPA Winston Field- Within Moderate Over-application or improper handling of Land - Broadcast Lands Observation sensitive pesticides or fertilizers may impact the Fertilized Areas drinking water source. 32 Managed Forest Clearcut Forest Throughout the DWPA Winston Field- Within Higher Cutting and yarding of trees may Land - Clearcut Lands Observation sensitive contribute to increased erosion, resulting in Harvest (< 35 yrs.) turbidity and chemical changes in drinking water supply. Over-application or improper handling of pesticides or fertilizers may impact drinking water source. 33 Managed Forest Partially Throughout the DWPA Winston Field- Within Higher Cutting and yarding of trees may Land - Partial Harvested Forest Observation sensitive contribute to increased erosion, resulting in Harvest (< 10 yrs.) turbidity and chemical changes (ex: nitrates) in drinking water supply. Overapplication or improper handling of pesticides or fertilizers may impact 34 Managed Forest High Road Throughout the DWPA Winston Field- Within Higher Road building, maintenance, and usage Land - Road Density Areas Observation sensitive may contribute to erosion and slope failure Density ( > 2 causing turbidity in drinking water supply. Vehicle usage increases the risks of leaks or spills of petroleum products and other hazardous materials. 35 Above Ground Doug's Diesel Inc. Stanford Road Dillard Database (2) Within Moderate Spills, leaks, or improper handling of stored Storage Tanks - Field- sensitive materials may impact the drinking water Excluding Water Observation supply. 3/12/2003 Page 7 of 8

11 36 Mines/Gravel Pits Hanna Nickel Nickel Mine Road Riddle Database (2) Outside Higher Spills, leaks, or improper handling of Field- sensitive chemicals and wastes generated in mining Observation areas. operations or from heavy equipment may Former nickel mine. impact the drinking water supply. 3/12/2003 Page 8 of 8