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resistance data to provide USCS-type soil classification. This data will also be collected at intervals of approximately every 5 cm. The CPT -derived soil classification data will be interpreted within the context of existing data and interpretations for the property and nearby sites. UVIF-CPT borings will be abandoned by tremmie-filling with a mechanically -mixed cement - bentonite grout. The grout will be introduced via pipe as casing is removed from each hole. Thee surface finish of each boring will be made according to requirements of the owner of each property. 3.2 Sampling of Soil and Groundwater and Lithologic Logging Proposal analytes and sample numbers are shown in Table 1. Direct -Push ("Geoprobe" and "HydroPunch®") methods (DP) will be used to collect groundwater and soil samples for laboratory analysis of contaminant constituents, lithologic logging, and analysis for chemical parameters germane to the success of remediation. DP will be performed using the same truck -mounted equipment used for UVIF-CPT. DP is typically performed more quickly and with less disturbance than auger or other drilling method and produces less waste. DP will be used to collect samples for analysis of contaminants as follows (see also Section 3.5): • The TPH-g, TPH-d and benzene, toluene, ethylbenzene, and xylenes (BTEX) concentrations in 5 to 8 soil samples from zones indicated to be TPH-impacted by UVIF-CPT. Analysis will be by Methods 8015M and 8260. This will facilitate estimation of the total -phase hydrocarbon concentrations, the overall contaminant mass, and whether gasoline hydrocarbon contamination is present as SPH. The presence or absence of SPH is considered a key issue in the selection and design of a successful remediation method. • The TPH-g, TPH-d and BTEX concentrations in 6 to 10 groundwater samples from several locations indicated to be TPH-impacted by UVIF-CPT. Analysis will be by Methods 8015M and 8260. These results will help evaluate the lateral and vertical extents of impact and concentrations within the area of impact. These results will supplement and compliment the results of soil sample analysis mentioned above. • The TPH-g, TPH-d and BTEX concentrations of 5 to 15 groundwater and soil samples from depths and locations indicated to be unimpacted by TPH, to provide laboratory confirmation (to complement UVIF-CPT indications) thate extent of impact has been determined. (Methods 8015M, and 8021 and/or, 8060B. Analysis will be by M ds 8015M and 8260. Several samples will be analyzed for a fuller suite of OCs using Metho 8060B. 2 UserNaw or ftartment-Z.1sacDPIZ0051Pg188018800391A.5ad.doc 3-2