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F. WELL SAMPLING <br />• Monitoring wells will not be sampled until 48 -hours after the wells have been <br />developed. <br />• Well purging method and amount of purge water: low flow in accordance with US <br />EPA document titled Low -Flow (Minimal Drawdown) Ground -Water Sampling <br />Procedures (EPA/540/S-95/504). <br />• Monitoring wells will be sampled and analyzed for TPH and VOCs as identified in the <br />Final COPC Evaluation in the Feasibility Study (Miller Brooks, 2010). Information <br />regarding sample volumes, sample containers, preservation agents, and hold times is <br />provided in Table 1. <br />• QA/QC procedures: trip blanks, temperature blanks, laboratory QA/QC samples <br />G. WATER LEVEL MEASUREMENT <br />• The elevation reference point at each location will be surveyed within 0.01 foot and <br />ground surface elevation at each location will be within 0.01 foot. <br />• Method and time of water level measurement will be recorded in the daily field logs. <br />H. PROPOSED SCHEDULE FOR WORK <br />• Submittal of Work Plan - 7/30/10 <br />• Approval of Work Plan (RWQCB) -8/31/10 <br />• Approval of Work Plan/Access granted to Union Pacific Property- 9/30/10 <br />• Installation of monitoring wells - October 2010 <br />• Monitor and sample monitoring wells - December 2010 <br />• Monitoring Well Installation Report- 1/31/11 <br />• Quarterly/Semi-Annual Monitoring Report - 1/31 /11 <br />3 M/LEER BROOKS <br />P:\707 Cove Contractors\Groundwater\Well Installation Workplans\Work Plan MW-12_MW-13_FINAL.doc <br />