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D. WELL DEVELOPMENT Well development will be scheduled a minimum of 48 hours after well construction completion. Development will consist of pumping with a bladder pump at a rate of about 1 liter/min together with bailing and surging until groundwater turbidity is reduced. Well development will be documented on the well development log. (A sample log is shown in Figure 9.) Development water will be stored in labeled drums and kept on site until laboratory results have been received, at which time the groundwater and drums will be disposed in conformance with appropriate regulations. E. SOIL SAMPLING FOR CHEMICAL ANALYSES Four soil matrix borings are planned for two interior areas of the warehouse: the "concrete patch" area in the southeastern corner, and the "trench drain/concrete patch area" in the northeastern quadrant of the warehouse. These areas are shown in Figure 7. Area details are shown in Appendix A. Nominally, five samples will be collected from each borehole(Le., samples at 5, 10, 15, 20 and 25 ft bgs). PID readings and physical characteristics will be used to select samples for VOC and TPH-cc laboratory analyses (identified in Paragraph 4 of this section). If the uppermost soil sample selected for VOC and/or TPH analysis demonstrates detectable concentrations, the next lower sample will likewise be analyzed until there is no detectable concentration or until groundwater is reached. The 5-ft-deep samples will be analyzed for arsenic and mercury. The same collection and analysis procedure will be followed for the exterior monitoring well boreholes, plus one soil sample will be collected in the silt stratum 5 ft below the bottom of the water-bearing zone. This sample will be submitted to the laboratory and will be held for potential analysis pending analytical data from soil and groundwater samples in the same boring. One duplicate soil sample will be collected and analyzed for every ten submitted for analysis. Selected soil matrix samples will be analyzed for • Volatile organic compounds (VOCs) • Total petroleum hydrocarbons by carbon chain length (TPH-cc) • Total arsenic and mercury • Semi-volatile organic compounds (SVOCs) including polycyclic/polynuclear aromatic hydrocarbons (PAHs/PNAs), pending TPH-cc analysis The soil samples will be collected in 6-inch-long brass liners or a polyethylene sleeve inside the split-spoon sampler of the HSA. The liners/sleeve sections will be sealed with TeflonTM film, capped and taped, labeled and placed on ice (4C) for transport to the laboratory. All soil sampling procedures and collection details will be recorded on the boring logs and field data sheets. Standard chain-of-custody protocols will be employed for sample identification and transfer of possession.