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r Each soil sample will be sealed with Teflon® film and plastic end caps, labeled, packaged in an ' iced cooler and transported with chain-of-custody documentation to a state of California-certified hazardous waste testing laboratory for analysis The lab will analyze each of the soil samples on a standard turn-around time for TPH-as-het fuel, TPH-as-gasoline and BTEX by EPA Method 8020/8015M, and for MTBE, DIPS, ETBE, TAME, and TBA by EPA Method 82608 3 2 3 _Groundwater Monitoring, Sampling and Analysis After the new monitoring well seals have set, and on a quarterly basis thereafter, the new wells and the existing wells will be monitored and sampled Depth-to-groundwater and free product thickness (if necessary) will be monitored using a water level indicator capable of measurements to within 0 01 foot Following groundwater level measurements, the wells will be purged and sampled The wells will be purged with decontaminated pumps and dedicated disposable tubing until at least three well casing volumes have been removed and/or after groundwater temperature, pH and electrical conductivity values have stabilized Groundwater will be sampled from the wells using disposable polyethylene bailers and laboratory-supplied containers Each sample container will be labeled, packaged in an iced cooler and transported for analysis with chain-of-custody documentation to a state of California certified hazardous waste testing laboratory The lab will analyze each groundwater sample on a standard turn-around for TPH-as-tet fuel, TPH-as- gasoline and BTEX by EPA Method 8020/8015M, and for MTBE, DIPE, ETBE, TAME, and TBA ' by EPA Method 8260B 33 Cone Penetration Testing To delineate the soil stratigraphy and define the vertical extent of petroleum hydrocarbons below r65 feet, CPT data and depth-discrete groundwater samples will be collected from one location near the northeast corner of the former UST complex (Figure 2) This CPT location is proposed because it is on the downgradient site of the former UST complex, and it is in the area where the highest concentrations of petroleum hydrocarbons have been detected in subsurface soil The proposed CPT boring will be extended to a depth of approximately 95 feet bgs, However, the actual depth of the boring will be based on field observations and the performance of the CPT rig r 10 1