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Y r <br /> Groundwater samples were collected on October 3, 1995 from wells MW2, MW3, and MW6. <br /> { No groundwater samples were collected from MW4 due to the presence of free product. Prior <br /> f to sample collection, each sampled well was purged of a minimum of three well casing <br /> volumes of water. Purged water was contained in labeled 55 gallon drums (DOT H), and <br /> stored on-site. <br /> Groundwater samples were collected after physical parameters (pH, temperature, and <br /> conductivity) were monitored and had stabilized. Dedicated disposable bailers with bottom- <br /> emptying devices were used to collect samples from the wells. All field activities were <br /> performed in accordance with the Field Methods included in Attachment 1. Field purge logs <br /> are presented in Attachment 2. <br /> LABORATORY ANALYSES <br /> Collected groundwater samples were analyzed for benzene, toluene, ethylbenzene, xylenes <br /> (BTEX) and total petroleum hydrocarbons as diesel (TPHd) by Sequoia Analytical, a State- <br /> certified laboratory, utilizing EPA methods 8020 and modified 8015, respectively. Analytical <br /> results are summarized in Table 3. Laboratory data sheets and chain-of-custody documentation <br /> are included in Attachment 3. <br /> Laboratory results indicate that BTEX was not present above method detection limits in <br /> collected groundwater samples. Total petroleum hydrocarbons as diesel (TPHd) were present <br /> in samples collected from each well at concentrations ranging from 160 parts per billion (ppb) <br /> t{ f in MW3 to 350 ppb in well MW6. <br /> WORK IN PROGRESS <br /> The next groundwater monitoring episode is scheduled to be performed in late December 1995 <br /> and will include sample collection from wells MW3, MW6, and MW4 (if free of petroleum <br /> product sheen). <br /> .. 943691QR'CBRLYL3QMR L995.doc 2 <br /> F11 <br /> 11) • <br /> SMTH <br />