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" page 3 Project No. 90161a <br /> 19 June 1990 <br /> SITE RECONNAISSANCE <br /> On 1 June 1990 a representative from YOUNGDAHL & ASSOCIATES, INC. <br /> conducted a site reconnaissance and subsurface exploration <br /> program consisting of drilling, jogging, and sampling of 13 test- <br /> borings (see Figure No. 1 Appendix A and Field Study Appendix C) . <br /> The site was occupied by 2 buildings and a paved parking lot. <br /> The Yellow Submarine Sandwich Shop was opefor <br /> unoccupieei,drin <br /> tlsmall <br /> our field study. The second building appeared <br /> hand tools and cut lumber were visible inside. <br /> Two apparent asphalt patches were present over the former <br /> underground tank locations, as shown by the tank removal permit <br /> (see App <br /> endix B) . Borings 4, 5, and 6 were drilled in the fuel <br /> tank area. Borings 4 and 5 were terminated after encountering <br /> pipes. Sample 6-2A was collected at a depth of 3.5.5 feet near <br /> the base of the fill material. <br /> The waste oil tank area was tested by borings 3.0 and 11. Three <br /> borings described on boring log no. 11 terminated after hitting <br /> pipes. Sample 10-1A was collected at 5.5 feet at the base of the <br /> fill material. <br /> -y Concrete foundations and patterns in asphalt patches suggest the <br /> locations of 3 gasoline pump islands. These islands were testa <br /> Samples 1-1A and 2-2A were analyzed to <br /> by borings 1, 2, and 3. <br /> t.;.y <br /> test for potential hydrocarbon contamination. <br /> No free ground water was encountered in the test borings at the <br /> f " time of drilling. A more detailed description of the soils <br /> encountered is presented graphically on the "Logs of Test <br /> Barings," Figure Nos. 2 through 13, Appendix B. <br /> � z <br /> LABORATORY ANALYSIS <br /> Laboratory analysis was conducted on 4 soil samples to test <br /> f on contamination. Indicator analysis <br /> potential for hydrocarb <br /> chosen for the fuel tank and pump island areas were Total <br /> Petroleum Hydrocarbons (TPH) Gasoline, TPH Diesel, and <br /> Toluene, Ethyl-benzene, Xylene, (BTXE) . The waste oil tank area <br /> .., was tested for Oil & Grease in addition to TPH Gasoline, TPH <br /> Diesel, and BTXE. <br /> ollected from borings nos. 1, 2, and 6, to test the <br /> Samples were c <br /> fuel tank and pump island areas. A sample was collected from <br /> l0 to test the waste oil tank area. <br /> --..._ <br /> E'er <br /> 3 <br />