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readings indicated that contamination was present in the soil and possibly <br /> groundwater. After reviewing the workplan and discussing options with Jeff Wong of <br /> the SJCEHD , it was decided to convert the soil boring into a monitoring well. Mr <br /> Wong then left the site at 1055. <br /> After completion of coring operations, 2", blank & slotted PVC casing was run in the <br /> hole. Perforations extended from 30' to 5'; from 5' to the surface was blank. Details <br /> of the well construction are shown on PLATE VI. <br /> While augers & coring equipment were being decontaminated, the drill rig was <br /> located at the north end of the property on MW-6 at 1155 - (see PLATE I for its <br /> location.) The hole was hand-augered to 4' below grade, and then 8" augers were <br /> run to 5' below grade, and the first core taken. Augers were advanced, and <br /> additional cores taken at 10', 15', 20', & 25' using the same field protocol described <br /> above. Refer to PLATE IV for blow counts, lithology, odors & PID readings. <br /> The well was completed in the same manner as MW-4 & MW-5, as shown on PLATE <br /> VII. After completion of MW-6, all wells were grouted from the top of the bentonite <br /> seal to the surface with a cement/bentonite slurry. Well boxes were installed and <br /> concreted to the surface. The tops of the casings were fitted with a screw cap and <br /> traffic covers. Jeff Wong returned to the site at 1400 to authorize the testing of all <br /> 15 soil samples for BTEX, TPH-g, 5 oxygenates, 1,2 DCA & EDB by EPA 8260B. <br /> Unused soil samples and drill solids were placed in metal drums and stored on site <br /> for later disposal. The rig and crew left the site at 1500. Mark Jerpbak transported <br /> the preserved soil samples to JJW, Inc. office where they were securely stored until <br /> August 18, when they were transfered under chain of custody to Kiff Analytical <br /> laboratory for analysis. A copy of the custody chain, transmittal letter, and soil <br /> sample results are included as EXHIBIT D. <br /> On July 27, 2000, Don Light of Del-Tech Geotechnical Support Services performed <br /> the semi-annual sampling of MW-1, MW-2, & MW-3. Details of that work is included <br /> in EXHIBIT E. On August 18, Mr. Light developed, purged, and sampled MW-4, <br /> MW-5, & MW-6. The field reports, laboratory analyses & chain of custody for that <br /> work will be discussed below, and is also included in EXHIBIT E. <br /> i <br /> The surface coordinates and wellhead elevations were measured by Wong Engineers, <br /> licensed surveyors; a copy of that survey plat is included as EXHIBIT F. <br /> ANALYSIS & DISCUSSION OF THE RESULTS OF THE ABOVE WORK: <br /> PLATE I shows the depths to groundwater and the hydraulic gradient based upon <br /> the July &August sampling events. The gradient is very consistently to the <br /> Wm. I Hunter&Associates 4 <br />