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'M7M_E_ <br /> g. <br /> The 2 inch PVC pipe connected together from the wells prior to the <br /> intake of, the blower (1 horse power Rotron Blower) . A. sample port <br /> was installed :.at the intake,-.(vacuum.side) of . the blower for <br /> obtaining vacuum' afid:vapor .readings and also. samples. The blower <br /> exhausted . into . a. condensate drum (a`saaled 55 gallon. drum) _and <br /> then' .into . 4.' BS gallon activated charcoal.tub scrubs placed'.`. ir <br /> series. sample ports were placed on the exhausts of the blower <br /> and activated charcoal drums, see Figures 3C and 9B: <br /> SOIL SAMPLE RESULTS <br /> Soil samples of the tank excavation and nearby monitor wells <br /> indicate that gasoline range hydrocarbons are found between the 30 <br /> and 40 foot depths southeast of the excavation. Soil samples <br /> taken from the base of the three pump island excavations, <br /> indicated that contaminated soil remains beneath the eastern and <br /> western pump island areas at the 40 foot depth but for the most <br /> part has been removed by the excavation, see Figures 3B, 3C, 8 and <br /> Table I. <br /> To remediate the aged gasoline range contaminated soil beneath the <br /> pump island area and the area southeast of the tank excavation, <br /> three vapor recovery wells were installed for vapor recovery, P1, <br /> P2, and EX, see Figures 3B, 3C, 8 and Table 1. <br /> SOIL AND GROUND WATER SAMPLING PROCEDURES <br /> All samples were obtained by a California Qualified Geologist <br /> working directly under the supervision of California Registered <br /> Geologist #3037. The samples were collected, preserved, labeled <br /> and chain of custody 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 samples obtained from the borings for the monitor <br /> wells were analyzed using the following EPA and DOHS methods: <br /> 5030 for extraction, 8015-TPH, and 8020/602-BTEX. Since initial <br /> sampling showed that TEL and EDB did not exist at this site these <br /> analyses were not carried out for this sampling. <br /> Prior to obtaLaing a ground water sample from each monitor well, a <br /> water interface probe was lowered into each well to obtain a depth <br /> to ground water measurement. Then the wells were purged <br /> (approximately 2-3 gallons) until temperature, pH, and <br /> ----conductivity : tabiliz_ed,_ ind_acating that fresh ground water would <br /> be sampled. A dedicated sterile disposable PVC bailer was-than _T <br /> lowered into the well to collect the ground water sample. The <br /> ground water was then slowly decanted into EPA series 200 clean <br /> glass sample containers (4-40 ml VOA vials per well) . The sample <br /> containers were then labeled (site designation, well number, date, <br /> page 6 <br /> >: <br />