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` 161./ 1*40 A WESTON sample label will be affixed to every sample container and will include the following information: project ID or project number, sample ID, date, time of sample collection, sampler's initials, analytes requester) and preservatives used, if any. A Chain-of-Custody document will be initiated at the time of sampling and will accompany the sample until it is received by the laboratory. The Chain-of-Custody form shall be protected by '-' sealing it into a water tight plastic ziplock bag, placed with the samples during sample shipment. 3.2 Sampling Technique 3.2.1 Soil Sample Screening and Selection ` Each soil sample from the soil borings will be screened for the presence of hydrocarbon vapor using a FID or a PID. The two samples with the highest readings above background will be analyzed for BTEX and TPH-D. If no significant readings are observed, the two samples closest ` to the water table will be analyzed. Metal sleeves will be used to collect the soil samples will be capped with Teflon lined plastic end caps secured with tape. The sleeves will be labeled and placed into ziplock plastic bags for temporary storage in a cooler pending transport to the laboratory. 3.2.2 Monitor Well Groundwater Sampling Before sampling, the groundwater elevation will be measured and recorded and the well will be purged of three to five casing volumes in order to obtain a representative groundwater sample. As a routine part of the monitoring program, the groundwater physical parameters of �. temperature, electrical conductivity and pH will be measured and recorded. The samples will be collected using a teflon bailer equipped with a thin nylon line. Groundwater .. collected in the bailer will be poured into the sample containers to minimize aeration of the sample. Containers will be completely filled and then tightly capped. The sample containers will then be labeled, sealed into individual ziplock baggies and placed into an insulated cooler i- with ice. 3.3 Eauil2ment Decontamination All non-disposable equipment used will be decontaminated prior to sampling and between sample points. A solution of tap water and a laboratory grade cleaning detergent will be used to clean the equipment and deionized water of known quality will be used for rinsing. 3.4 Sample Storage and Shi in V Immediately after collection, labeling and Iogging, the groundwater samples will be placed in an insulated chest along with sealed bags of ice for temporary storage in the field and subsequent transportation to the Iaboratory. The samples will be transported to the laboratory by WESTON personnel. SM\RffSWCMVCD.WM 7 03114M W