Laserfiche WebLink
3.0 SCOPE OF WORK <br /> Based on an evaluation of available soil sample analytical results obtained during previous <br /> investigations at the site(Appendix A), the vicinity of the former underground storage tanks appeared <br /> to be the area greatest impacted by petroleum hydrocarbons Hydrocarbon concentrations ranged <br /> between non-detect to 33,000 mg/kg TPHg in this area Soil samples collected from this area would <br /> show how effective past remedial efforts have been The following scope of work is proposed <br /> 3 1 Health and Safety Plan <br /> Prior to conducting any site activities, SECOR will implement a site-specific health and safety plan <br /> for drilling activities as required by 29 CFR 1910 120 The health and safety plan details field <br /> procedures regarding various potential health and safety hazards that may be encountered during site <br /> activities A copy of the Health and Safety Plan is provided in Appendix B <br /> 32 Permitting <br /> SECOR will obtain the necessary permit required by the San Joaquin County Public Health Services, <br /> Environmental Health Division for the drilling of soil borings <br /> 33 Utility Clearance <br /> Prior to any field work, SECOR will conduct a utility clearance of the drilling area to ensure that <br /> subsurface utilities are not intercepted during drilling activities Additionally, Underground Service <br /> Alert (USA) is to be notified by SECOR prior to drilling <br /> 34 Soil Sam lin <br /> Two soil borings will be advanced at the site at the locations depicted on Figure 2 The soil borings <br /> will be drilled with a truck-mounted drill ng utilizing 8-inch outside diameter hollow-stem augers <br /> Each boring will be advanced to a depth of approximately 75 feet below ground surface Samples will <br /> be collected every 5 feet or at obvious changes in lithology using a split spoon sampler Soil samples <br /> will be collected from the sampler in brass tubes and sealed with Teflon tape, plastic caps and tape <br /> The soil samples will be labeled with the appropriate borehole location, time and date of collection, <br /> and placed in ice-cooled storage for subsequent transport and analysis at a California certified <br /> analytical laboratory Chain-of-custody procedures will be followed at all times Selected soil <br /> samples(approximately 4 soil samples per boring) will be analyzed using EPA Methods 8015/8020 <br /> for TPHg, BTEX and MTBE The completed boreholes will be backfilled to ground surface with a <br /> bentonite cement slurry <br /> JOb N <br /> 01 Oc 0701 SECOR <br /> Jab Na!0700.014-02 <br /> December 2,19% <br /> 2 <br />