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• B \WO -21AN DOC <br /> 60-70 feet below sea level (75-85, below the surface) and should <br /> be flowing in a east to Sot :heasterly direction, see figures 1, 2, <br /> 3and 4 <br /> INTRODUCTION: <br /> Regal Station 604 has had the underground storage tanks and <br /> product dispensing piping removed All excavated soil has been <br /> stockpiled on site and covered with polyethylene liners to prevent <br /> uncontrolled areation and leaching of contaminants from the soil, <br /> in case of rain <br /> WEGE obtained the required soil samples from the tank excavation <br /> and from the product line trenches, under the direct supervision <br /> of Carol Oz of San Joaquin County Public Health Services, figure <br /> 3B Samples have also been obained from the excavated soil piles <br /> (per 25 cubic yards) in order to profile the soil for treatment <br /> (aeration if appropriate), figure 5 The samples obtained from <br /> the tank excavation and product line trenches were frozen on dry <br /> ice and chain of custody hand delivered to ChemTech (State <br /> Certified Laboratory #359) for analysis using EPA and DOHS methods <br /> 5030 (Purge and Trap Sample Preparation). 8015 (Total Extractable <br /> Petroleum Hydrocarbons-TPH), 8020 (BTEX-Benzene, Toluene, Ethyl <br /> Benzene and Xylenes), TEL (DOHS-LUFT-Tetraethyl Lead) and EAB <br /> (DOHS-AB 1803-Ethylene Dibromide) The excavated soil samples <br /> were analyzed using EPA methods 5030 and 8015. See Table 1 for <br /> . sample results of the excavation and trench samples and Table 2 <br /> for the excavated soil piles samples, Appendix C <br /> Wickland Properties (Regal Service Station parent company) has <br /> contracted WEGE to perform the required site assessment WEGE is <br /> a registered Geologist/Environmental Consulting Co, and is also a <br /> licensed C57 drilling contractor This site will be assessed <br /> under Calif Reg. Geol # 3037 and C-57 licence #513857 <br /> WEGE will assess the site under the guidelines outlined in the May <br /> 1988 "Leaking Underground Fuel Tank Field Manual Guidelines for <br /> Site Assessment, Cleanup, and Underground Storage Tank Closure" by <br /> the State of California Leaking Underground Fuel Tank Task Force <br /> All samples will be obtained by a trained geologist working <br /> directly under the supervision of the above mentioned registered <br /> geologist The samples will be collected, preserved, labeled and <br /> chain of custoay hand delivered to ChemTech Analytical <br /> Laboratories, 3017 Kilgore Road #110, Rancho Cordova, CA 95742 <br /> (916-635-3962) ChemTech is a State of California certified lab <br /> (#359) All soil samples obtained from borings and/or excavtions <br /> will be analyzed using the following EPA and DONS methods 5030 <br /> for extractio►., 8015-TPH, 8020-BTEX, DOHS-TEL and EDB-DOHS-AB <br /> 1803 Ir ii.ttial sampling indicates that TEL and EDB dues not <br /> exist at this site these analyses will not be carried on to the <br /> next samples <br /> 2 <br />