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Kennedy/Jenks/Chilton WP-2 and to determine the extent and concentration of DDT that may be present in the warehouse yard. Twelve discrete samples will be collected from the warehouse storage yard and from the facility perimeter. Four discrete samples will be collected from the area near the southern boun- dary of the site where three pesticide storage containers are located. Task 4 - Surface Wipe Sampling Surface wipe samples will be collected from the floor, walls and shelves of the warehouse for pesticide analysis. Samples will be collected using the following procedure: 1) Samples will be collected in locations suspected of pesticide storage or in locations where staining is visible, if any. A clean 100 - cm2 tem- plate will be placed over the area. The area will not be cleaned of par- ticulate matter or oily films before wiping so that the sample will repre- sent the gross conditions of the surface. 2) An appropriate solvent will be applied to a piece of 11-cm filter paper (eg. Whatman 40 ashless, Whatman 50 smear tabs, or equivalent) . The moistened filter paper will be held with a pair of stainless steel forceps and used to thoroughly swab the 100 - cm2 templated area. 3) For floor areas or walls, wipes from several locations on the given floor or wall area will be collected and placed in the same sample bottle for composite analysis. Sample collection in each location of the room will be performed with a clean filter paper swab and template. Approximately 2 to 4 wiped areas on the floor of a room or on the walls will be col- lected for a composite sample. 4) The wipe samples will be collected in precleaned glass bottles and stored in a cooled ice chest. A chain-of-custody form will be completed and included with the samples upon shipment to the Kennedy/Jenks/Chilton Laboratory Division in San Francisco, California. Task 5 - Laboratory Analysis of Soil , Groundwater, and Wipe Samples The twelve samples collected from the storage yard will be shipped to the Kennedy/Jenks/Chilton Laboratory Division for analysis. Laboratory analyses will be performed in a normal two-week turnaround period, except for pesticide analyses, which require three to four weeks. The proposed laboratory analysis plan is shown in Table 3. Analyses of soil and groundwater samples collected from the soil borings and monitoring wells include the gasoline constituents benzene, toluene, and xylenes (BXT) ; diesel and gasoline hydrocarbon scans (TPH); and nitrate. All surface samples will be analyzed for nitrates and pesticides. Wipe samples will be analyzed for a variety of possible pesti- cides. Determination of analyses for the wipe samples will be made upon research of the pesticides stored in the warehouse. The four surface soil samples collected from the vicinity of the storage trailers will be sent to a state certified laboratory for Dioxin analysis. 5