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5. If visual examination or field screening indicates the presence of petroleum components, one <br /> of the following options will be followed: (a)the soil boring will be completed as a groundwater <br /> monitoring well as shown on the attached schematic diagram, (PLATE III;) or(b) augers will <br /> be left in the hole and preserved samples will be analyzed on 24 hour TAT for BTEX, TPHg, & <br /> TPHd. While waiting for the results of the lab analyses,the rig will be moved to the location for <br /> the next well and the above procedure repeated. <br /> 1 6. Drill solids will be placed on plastic and properly covered. The soil will be sampled and <br /> analyzed as required for transport to an approved disposal facility. <br /> 7. Depending upon the results of soil and water analyses, the soil borings will either be <br /> i <br /> completed as monitoring wells, or thoroughly grouted from total depth to the surface. <br /> 8. If one or both soil borings are converted to monitoring wells, they will be developed and <br /> sampled within 36 to 48 hours after completion. Water samples will be analyzed for BTEX, <br /> 'i TPHg, and TPHd using San Joaquin Co. EHD approved tests and detection limits. Depth to <br /> water in all wells will be determined during this work, and water samples will also be collected <br /> { from MW-1 &MW-4 & analyzed for the same constituents as the new wells. l <br /> ' 1 <br /> 9. If appropriate, the elevation and surface coordinates of each well will be determined by a <br /> licensed surveyor. <br /> { 10. All field operations will be supervised by a qualified geologist under the direction of a <br /> representative of the San Joaquin Co. EHD. <br /> i <br /> Upon completion of the work, and receipt and analysis of the laboratory results, a report will be <br /> submitted to the San Joaquin County EHD for review and response. <br /> OM. . u er&Associates r 1, 1998 �D GEWQCB -Mark List � Wj�jg j.riUMER <br /> John Marcicprrrs�•/r`� <br /> Garrison Law Corp. K0.660 <br /> OF CAS-1F���`? <br /> 1 <br /> 4 IL <br /> 3 <br />