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' 0 0 KOPPEL-STOCKrON TERMINAL <br /> MONITORING WELL INSTALLATION WORK PLAN <br /> with the property owner before well installation. For this work plan,it is assumed the <br /> surface completion will consist of a 12-inch diameter,traffic-rated flush mount sealed with <br /> ' concrete. The well will be locked with standard Master locks. Following completion,the top <br /> of casing and ground surface elevations will be surveyed to the 1988 North American <br /> Vertical Datum. <br /> 4.0 Well Development <br /> ' The surge-and-bail method will be used for initial development of the monitoring well until <br /> water quality characteristics stabilized. The well will be surged for at least 15 minutes and <br /> then bailed for 30 minutes. Once bailing is complete,the well will be pumped until <br /> ' successive samples show stabilization of pH within 0.5 unit,temperature within 1 degree <br /> Celsius and conductivity within 10 percent.Field parameters,purge volume,and water <br /> levels will be recorded on well development logs. <br /> 5.0 Schedule for Well Installation and Sampling <br /> ' The area north of Sonora Avenue is seasonally wet,and the location will be difficult to <br /> access during the winter and early spring.Therefore,monitoring well KP-10S will be <br /> installed in early summer 2005 once the area has dried and the location is accessible by a <br /> ' drill rig. <br /> Well KP-10S will be monitored semi-annually for one year in accordance with RWQCB <br /> ' Monitoring and Reporting Program(MRP)Number R5-20040835, dated November 10, <br /> 2004. Following one year of semi-annual monitoring,the monitoring frequency will be <br /> reduced to an annual basis.The schedule for well installation and sampling is presented in <br /> ' Table 1.Commencing with the 2006 annual monitoring event,well KP-10S will be sampled <br /> on an annual basis concurrent with the annual sampling at other site wells. <br /> As required by the MRP, groundwater samples collected from KP-10S will be analyzed for <br /> ' nitrate as nitrogen and ammonia/ammonium. Field parameters will also be recorded <br /> during semi-annual and annual sampling events at this well. <br /> TABLE 1 <br /> Schedule for Drilling,Installing,and Sampling Monitoring Well KP-10S <br /> Monitoring Well Installation Work Plan,Koppel Stockton Terminal,Stockton,California <br /> ' Month and Year Activity <br /> June 2005 Install KP-10S <br /> ' October 2005 Sample KP-10S as part of the 2005 annual sampling event <br /> April 2006 Sample KP-1 OS <br /> October 2006 Sample KP-1 OS as part of the 2006 annual sampling event <br /> RDDW:ICREVROII 21184\REPORTS\2004_MONnORINGWELLWP2004_MWELLWP.000 3 <br />