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Advanced <br /> GeoEnvironmental, Inc . <br /> _ ufN�)f-tlrc�)-�t Ccrlrfr)t-�rrcr <br /> 26 February 1996 <br /> AGE-NC Project No. 95-0167 <br /> Mr. Dave Guardino <br /> GAURDfNO & CRAWFORD <br /> 517 West Fremont Street <br /> Stockton, CA 95205 <br /> Subject: Soil Probing Installation - September 1995 <br /> GAURDINO AND CRAWFORD <br /> 517 West Fremont Sheet, Stockton, California <br /> Dear Mr. Guardino: <br /> In accordance with your request, AaYancetl GeoEnvironmental, Inc. (AGE) advanced three soil <br /> ' probings at 517 West Fremont Street in Stockton, California. The location of the site is illustrated <br /> in Figure 1 - Location Hap. A plan of the site is illustrated on Figure 2 - Site Plan. <br /> BACKGROUND <br /> In September 1989, one 1,000-gallon underground storage tank (UST), dispenser and piping was <br /> removed from the site. Petroleurn hydrocarbons were detected in soil samples collected from the <br /> UST excavation and dispenser areas at concentrations up to 700 parts per million (ppm). <br /> PROCEDURES <br /> Probings were advanced on 19 September 1995, using AGES Geoprobe 5400 probing unit equipped <br /> with 1.125-inch probe rods. Probing P1 was advanced north of the former UST area; probing P2 was <br /> advanced through near the center of the former UST excavation; and probing P3 was advanced near <br /> the former dispenser location. Each probing was advanced to a depth of 25 feet below surface grade <br /> (bsg). <br /> Soil samples were collected frorn each probing at 5-foot intervals beginning at a depth of 5 feet (P 1 <br /> and P3) or 10 feet (1`2) using a Geoprobe soil sampling assembly and four brass sleeves. After <br /> collection, the ends of the second brass sleeve were covered with Teflon sheets, capped and sealed <br /> AArith tape. Samples were placed in a chilled container and transported to McCampbell Analytical, Inc. <br /> ]` " Wc,,t Nlaruh ],:tnc. Sun tt�. A. Sloc:klo n. Cal iI'OrniLi 9�?07 <br /> FA f 01)) Q) 16-0700 <br />