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_ y <br /> 1. -rPRO NO <br /> 'Y Be <br /> I <br /> °Y <br /> Y pli f •. VS Y. 5� W IR'- LI 1 i <br /> a111� (.i <br /> Exxon Company USA <br /> 202/225-2745.02 <br /> August 21. 1987 <br /> MONITORING WELL INSTALLATION <br /> E The two soil borings were converted to groundwater <br /> monitoring wells to provide access for long term monitoring and <br /> water sampling. Figure 2 , Site Plan , shows the location of <br /> 1 the monitoring wells (MW4 anJ MW5) and the three previously <br /> existing wells (MW1 , AfW2 and MW3) . <br /> S <br /> The wells were constructed of 4-inch diameter PVC casing and <br /> " 0..020-inch machine slotted well screen and were installed to a <br /> total depth of 60 feet below the ground surface. . The wells were IE <br /> r <br /> each constructed with a 30-foot screened interval from 60 feet to <br /> FT <br /> 30 feet below grade, and with solid PVC casing to complete the <br /> za <br /> well to: the surface. <br /> A sand pack consisting of clean *2 Monterey sand was placed <br /> in the .well boring annulus from the bottom of the well to a point <br /> approximately 1. foot above the screened interval. Each .well <br /> was then ' completed with a ', bentonite sea! and cement <br /> � grout to the <br /> surface. except for a lock.lng .::e`11 `:.^ap and a. traffic rated street <br /> M box to ,provideaccess access ( see Appendix 1 , Drill Logs , for well <br /> construction details) . j <br /> GROUNDWATER MONITORING <br /> The-wells on site viere monitored on Jun , 26, .1987 to obtain F <br /> deptb to viater measurements and . to insgec* for the presence of <br /> `r- <br /> a <br /> free floating product". The monitoring was condt►cted. in <br /> accordance with Groundwater Technology's SOP 8 (see Appendix II ) . <br /> 7 <br /> �N C� <br /> r <br />