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v <br />California Regional Water Quality Control Board <br />Central Valley Region <br />Wimston H. Hickoa <br />Serretaryfor <br />Environmental <br />Protection <br />15 October 2001 <br />Mr. Jim Lancaster <br />Woolsey Oil, Inc. <br />166 Frank West Circle <br />Stockton, CA 95206 <br />Robert Schneider, Chair <br />Sacramento Main Office <br />Intcmet Address: htip://www.swrcb.ca.gov/-rwgcb5 <br />3443 Routier Road. Suite A. Sacramento, California 95827-3003 <br />Phone (916) 255-3000 • FAX (916) 255-3015 <br />Gray Davis <br />Governor <br />WORKPLAN FOR DEEP MONITORING WELL INSTALLATION, WOOLSEY OIL, INC., 930 <br />VICTOR ROAD, LODI, SAN JOAQUIN COUNTY <br />We have reviewed the Workplan for Deep Monitoring Well Installation, Woolsey Oil, Inc., 930 Victor <br />Road, Lodi, San Joaquin County, CA (Work Plan), received 1 October 2001, submitted on your behalf <br />by Ground Zero Analysis, Inc (GZA). The Work Plan details the drilling, well construction, and <br />groundwater sampling of one monitoring well (MW -1D). The screened interval will be between 85 and <br />100 feet below ground surface (bgs). Soil samples will be taken by split spoon at five-foot intervals only <br />between 60 and 70 feet to locate a clay layer previously identified in soil boring SB -1. A 6.25 -inch <br />diameter steel conductor casing will be set down to the clay layer, and grouted in place. Drilling will <br />continue through the grout plug down to 101 feet bgs. A two-inch diameter polyvinyl chloride <br />monitoring well will be constructed inside of the conductor casing, using a centralizer at approximately <br />every 20 feet of casing. The drilling method will be mud rotary. <br />The Work Plan states that all samples (water and soil) will be analyzed for Total Petroleum <br />Hydrocarbons, Diesel and Gasoline by EPA Method 8015M; Benzene/Toluene/Ethylbenzene/Xylenes by <br />EPA Method 8020; and fuel oxygenates by EPA Method 8260. <br />Comments <br />1. Please specify the grain size/type of filter pack for the pre -packed monitoring well filters <br />2. Please provide an explanation of the disposal options that GZA will evaluate, prior to proper disposal <br />of the drill cuttings. <br />3. Deep Boring 1 (DB 1) from the previous investigation is not shown on Figure 2. Please add DB 1 and <br />label the boring. <br />4. Since there will be no soil cores taken with the mud rotary method, please show the lithology in the <br />drilling logs from the cuttings, and compare the cuttings to the DB 1 lithology, in the next report. <br />California Environmental Protection Agency <br />�a4 Recycled Paper <br />