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r=x <br /> � The analytical suite re <br /> volatile organics by EPAested M thodfor 80201,e samtotaplles was for aromatic <br /> r bons (light and heavy fractions) by Method 8015etroleum organo-lead. <br /> Instructions were provided to the Laboratory that d f raano-lead, <br /> analytical result was obtained for organolead on any sample, tve <br /> hp <br /> sample was to be analyzed for total soluble lead. <br /> j <br /> 3.0 Well Installation <br /> Well drilling was initiated on December 12, 1988 at the location <br /> for monitor well Mwl. Monitor wells MW2 and MW3 <br /> December 14 and December 15, 1988, respective) were drilled on <br /> e for each of these wells occurred the da Y• Construction <br /> i-; (References: schedule of work completed y Table Ithey were drilled <br /> drill rig using to inch outer diameter, g, )) • An Aciameter <br /> �.. hollow stere augers was used to drill all monitor hwell eboreholesr <br /> The cuttings returned to the surface by the auger flights <br /> containerized in 55 gallon drums and left on site <br /> of the soil analytical results. pnwerecwere <br /> Construction ofeach ll topk <br /> eit <br /> place inside the augers, with the screen and casing first lowered <br /> k.� into place and the construction materials (sand and bentonite) <br /> introduced through the annulus. As the construction materials <br /> filled the borehole, the augers were <br /> d <br /> bentonite-cement gx'aut was then mixed at the lsurfacer nd• A ed <br /> into place through the augers. The grout was allowed to harden <br /> overnight, at which time sufficient standpipe was added to t <br /> top of the wells to elevate oe them abohe <br /> ve the project _ <br /> -"� tion surface. Construction materia <br /> same type as follows: Is for all wells were of rthe <br /> t <br /> screen - Schedule 40-flush threaded PVC <br /> slot size; r 0.010 inch <br /> casing - Schedule 40-flush threaded PVC; <br /> caps - Schedule 40-flush threaded PVC for bottom caps <br /> and PVC slip over top caps; <br /> F <br /> gravel pack - Monterey #2-16 sand, washed, kilned and <br /> bagged; <br /> seal - 0.5 inch bentonite tablets; <br /> great - Potable water, Quik Gel bentonite <br /> Portland Type I-II cement, powder and <br /> All augers, screens, casing and bottom caps were steam cleaned <br /> prior to use in the wells. All grout was placed under the <br /> supervision of a San Joaquin Local Health District - Environmen- <br /> tal Health Division representative. The attached Monitor Well <br /> logs present the lithologies encountered, including first occur- <br /> rence of saturated materials and well construction <br /> specific to each well. details <br /> d <br />