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' 3 SCOPE OF WORK <br /> 1 <br /> ' Western Oil & Spreading Inc proposes the following tasks leading to closure of the <br /> contaminated site <br /> (1) Characterize contaminated soil zone <br /> (2) Characterize the shallow groundwater zone and any contamination <br /> (3) Evaluate applicability and necessity of various remediation schemes <br /> ' (4) Carry out remediation or leave in place options <br /> (5) Apply for and achieve closure status of the site <br /> ' 31 Charactenze Soil Contamination Zone <br /> ' Exploratory borings utilizing either a continuous flight , hollow-stem auger drilling equipment <br /> or Direct Push Technology (DPT) such as a Geoprobe® may be utilized Both methods are <br /> briefly described in Appendix B, EXPLORATORY BORING AND WELL INSTALLATION <br /> PROCEDURES Cost, speed and flexibility in the field favor DPT A Model 5600 <br /> Geoprobe®, Heavy Truck Mounted Probe is planned to be employed This size and type of <br /> ' unit has achieved penetration to depths greater than 100 feet in similar formations The <br /> groundwater surface is thought to be 50 to 60 feet bgs <br /> 31.1 Site Specific Soil Sampling <br /> P 9 <br /> ' Site specific boring directions are also included in Appendix B Location of initial boreholes <br /> is described in the Figure 3, Site Plan Hopefully, three DPT borings will allow definition of <br /> the petroleum hydrocarbon contaminated mass limits In the event the three are not <br /> r' sufficient, additional borings will be placed at the discretion of the Project Manager or <br /> delegated responsible professional In the event additional holes are required beyond the <br /> ' site's boundary (parcel boundary), additional holes may be bored with consent of the <br /> receiving landowner and with well drilling permitting from San Joaquin County PHSIEHD <br /> ' Lithological recording, leading to a presentation depictingthe cross section of each hole, <br /> , <br /> t will be performed as sampling is performed <br /> 3-1 <br /> 1 <br /> t <br />