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09/08/2005 10 :24 FAX 916679290 URS-SACRAMENTO-GO a 005/005 <br /> DD]C-Sharpe Groundwater Monitoring Well Installation/Abandonment Work Plan <br /> presented in the MC-SharpelTracy Comprehensive Field Work Plan Field Procedures(URS.2004b). <br /> The installation of the MW528 well cluster has been scheduled to begin on 12 September 2005;the <br /> MW527 wells and wells to be abandoned that are also described in this work plan have not yet been <br /> scheduled. <br /> Table 1.1. Estimated Well Specifications, Well Installations, DDJC-Sharpe' <br /> Estimated Estimated <br /> Estimated Casing, Casing Well Slot Length of <br /> Well Depth Diameter Material Screen Material Size Inches Well Screen <br /> MW AR 40ftb 2-in S 40P <br /> V SCH4 PVC 0.010 0feet <br /> 527B 80f gs 2 ch SCH 40 C SC 40 PVC 0.0 10 feet <br /> 527 R 16 ft bgs 4-inch SCH PVC CH 80 PV 10 10 t <br /> MW5 DR O ft bgs 4-in S 80 PVC S 0 feet <br /> MW528B 130 ft bgs 4-inch SCH 80 PVC SCH 80 PVC 0.010 10 feet <br /> MW521C 150 ft bgs 4-inch SCH 80 PVC SCH 8o PVC 0.010 <br /> r 10 feet <br /> MW528 <br /> '1 CD 190 ft bgs 4-inch SCH 80 PVC SCH 8o PVC 0.010 to feet <br /> + MW528D 220 ft bgs 4-inch SCH 80 PVC SCH 80 PVC 0-010 10 feet <br /> 4 ° Well/piezometcr specifications are dependent upon the lithology encountered during drilling. <br /> Note: Well numbers MW527APJBR and MW527CRlDR will be assigned new unique numbers due to the distance from the <br /> existing MW527 cluster;MW527BlC/D will remain in tact for water level measurements only. <br /> it bgs = feet below ground surface <br /> MW = monitoring well <br /> PMW = proposcdmonitoring well <br /> PVC � pulyvinylchlonde <br /> ` SCH = Schedule <br /> { 2.0 WELL INSTALLATION ACTIVITIES <br /> 2.1 Pre-Well Installation Activities <br /> Before any drilling is initiated,well installation and abandonment permits will be obtained from San <br /> I Joaquin County Environmental Health Department (SJCEHD),as well as clearance of aboveground and <br /> below ground utility hazards at all the locations. <br /> 2.2 Field Documentation <br /> 2.2.1 The URS field geologist will maintain an accurate log for all the borings. At a minimum,the log <br /> shall include: <br /> • Name of project and site; <br /> • Boring number; <br /> 2 August 2005 <br />