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1 I <br /> FIELD WORK PERFORMED <br /> ' GENERAL DATA AND ENVIRONMENTAL CONTROL PROCEDURES <br /> Spectrum Drilling Co. , Stockton, CA, drilled and completed <br /> ' all three monitor wells under the direction of Dennis R. <br /> Allen (DRA) . The San Joaquin County Department of Health <br /> Services, Environmental Health Division, (EHD) was notified <br /> ' for all required inspections . The inspector' s presence on <br /> the site will be noted below. <br /> Spectrum Drilling Co. brought to site, steam cleaned augers, <br /> sample spoons, and buckets for washing small equipment if <br /> needed. Shop cleaned bailers and all PVC pipe, gravel , <br /> cement, surface well vaults and other equipment used were <br /> ' brought to the site by Spectrum Drilling Co . Separate auger <br /> flights were used for MW # 1 than in MW' s 2 & 3 owing to <br /> different sized holes . The auger flights were steam cleaned <br /> ' between MW' s 2 & 3 . <br /> All samples were collected either by or under the <br /> supervision of DRA 2" X 3" and 2" X 6" new brass sample <br /> ' tubes were used, along with 2" x 6" spacers in the split <br /> spoon sampler. Samples were normally taken at the bottom of <br /> the 1- 1/2 ' long sample . All samples were capped with Teflon <br /> patches, plastic end caps, sealed with duct tape, labeled <br /> on both ends and the side, and placed in an ice chest with <br /> crushed ice . Samples from the first days work were held over <br /> t night by DRA; all samples were delivered to FGL Laboratory, <br /> Stockton, CA, a Cal . certified lab, at the end of the second <br /> days work. Chain-of-Custody forms were filled out and the <br /> samples were signed for at FOL. FGL had been notified that <br /> ' all samples were to be tested to Tri-Regional WQCB <br /> standards . All samples were tested for BTEX, TPH(G) and <br /> TPH(D) owing to the uncertainty of the fuel types that had <br /> ' been stored in the tanks . <br /> Samples were collected at the depths as per the work plan, <br /> with some small adjustments as to depth in order to try and <br /> ' get samples just above the water table Tghe,{ wit-er table was <br /> not lo-cat�e�dt du�in`g tbfdring opera8 ion�s�at exactly OW same. <br /> elevation: The was owing toy the existenceof aA c1a'\y5{ a'qu�i°gird <br /> ' above the water bearing str`at"a. ead in the <br /> aquifer caused the water to rise about as muYi as<6 ' after <br /> the water table was ,genet-rated. This writer (DRA) believes <br /> that no water bearing strata were penetrated that might ever <br /> ' produce water in useful quantities . <br /> All borehole cuttings and water bailed from the wells during <br /> ' completion are stored temporarily on site at each well in 55 <br /> • gallon lock-tight drums . The contents of each drum will be <br /> disposed of at a proper site after the quality of the <br /> ' contents are known from testing the soil and water samples . <br /> ' 2 <br />