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1 <br /> 1 <br /> ' During the period May 17 and 18, 2005, three Phase 1 monitoring wells were <br /> installed at the MBR WWTP site. Figure 3 is a scaled site map showing the <br /> wastewater treatment plant storage facilities, new and previously existing <br /> ' monitoring wells, and major physical and man-made features. Table 2 lists the <br /> new and previously existing MBR WWTP Phase 1 monitoring wells plotted in <br /> Figure 3 and reports their current status. <br /> ' Table 2. MBR WWTP Well Inventory, July 2005. <br /> ' <br /> Well ID Previous Date ___DateStatus <br /> ID Drilled Replaced <br /> KMW-4 KMW-4 01/02/01 --- Previously existing monitoring well. <br /> ' MBRMW-1 5/18/2005 == New monitoring well. <br /> MBRMW-2 5/18/2005 New monitoring well. <br /> MBRMW-3 — —&/1—7/2o05 New—monitoring well. <br /> ' 2.1 Drilling Details <br /> ' Supervision of Borehole Drilling and Monitoring Well Installation <br /> ' Monitoring wells were constructed by Woodward Drillings, Cascade Drilling10, and <br /> Water Development Company11 under the supervision of Kleinfelder personnel. <br /> Prior to construction, permits were obtained from the San Joaquin County <br /> ' Environmental Health Department (Appendix B), and Underground Services Alert <br /> visibly marked all subsurface utilities, pipelines, tanks, septic systems or other <br /> structures. During all phases of well construction and development, inspections <br /> ' were made as required by the County. <br /> Drilling Equipment and Techniques <br /> ' All wells were drilled employing a 10-inch hollow-stem auger. The boreholes <br /> were drilled to a depth of about 21 feet below land surface, with the exception of <br /> the following four wells. <br /> The borehole for MWM-9 was drilled to 31 feet in an attempt to intercept <br /> thigher yielding sediments and improve potential well yield. <br /> ' 9 Woodward Drilling, Rio Vista, CA, 707-374-4300 (Driller's name was Amador); installed <br /> monitoring wells MW-12, 14, 15, 16, 17, 18, 20, 21, 23, 24, and 25. <br /> 10 Cascade Drilling, Rancho Cordova, CA, 916-638-1169 (Driller's name was Tony); installed <br /> MWM-1, 2, 3, 4, 5, 6, 7, 8, 11, and 19. <br /> 11 Water Development Company(WDC), Zamora, CA, 1-800-873-1169 (Driller's name was <br /> ' Jared); installed MWM-9 and MBR-1, 2, and 3. <br /> 1 <br />