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• Development will be performed using a surge block and submersible pump until the water produced will be relatively sediment-free All water produced from the wells during development will be placed in drums on site for later disposal 4.3 Ground Water Samolina Each newly installed monitoring well at the site will be purged using a submersible pump until at least four well casing volumes of water are removed or the well is pumped dry Wells that are pumped dry will be allowed to recover to approximately 85 percent of the static water level prior to sampling After purging, a water sample will be collected from each well with a clean disposable bailer Each sample will be appropriately labeled and stored on ice from the time of collection through the time of delivery to the laboratory Ground water samples will be transported to the laboratory and analyzed within the EPA-specified holding times for the requested analyses 5.0 ANALYTICAL PROCEDURES Samples collected from the site will be submitted to state certified laboratory for analysis Samples will be analyzed for BTEX using EPA Method 802113, TPH as gasoline using EPA lie Method 8015 Modified, and oxygenate compounds using EPA Method 82608 6.0 QUALITY ASSURANCE PLAN This section described the field and analytical procedures to be followed by ENSR throughout the investigation 6 1 General Sample Collection and Handling Procedures Proper collection and handling are essential to ensure thequality of a sample Each sample will be collected in the appropriate container, preserved correctly for the intended analysis and stored prior to analysis for no longer than the maximum allowable holding time Details on the procedures for collection and handling of soil samples form this project can be found in previous sections 6.2 Sample Identification and Chain-of-Custody Procedures Sample identification and chain-of-custody procedures ensure sample integrity and document sample possession from the time of collection to its ultimate disposal Each sample container submitted-for analysis-will-have-a-label-affixed-to-identify--the-job-number,-sampler,-date-and- 0 time of sample collection, and a sample number unique to that sample During soil sampling,