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Monitoring Well Sampling <br /> All new monitoring wells will be developed and purged. After purging, each well will be sampled <br /> by the dedicated tube method. Samples will be transported under ice and chain of custody to a State- <br /> certified laboratory. The static groundwater elevation will be determined before purging. <br /> Sample Analysis <br /> Soil samples will be analyzed by EPA methods 8020 (BETX), 5030/8015(M) (TPH Gasoline)and <br /> 8260(oxygenates). Water samples will be analyzed by EPA methods 602 (BETX), 5030/8015(M) <br /> (TPH Gasoline) and 8260(oxygenates). Soil sample analysis by EPA method 8260 for oxygenates <br /> will be limited to selected samples to conserve resources. <br /> WORK PLAN FOR INSTALLING THREE CPTS <br /> CPT Placement <br /> This plan is to place three CPTs in the Caltrans Right of Way to the northeast of the site to a depth <br /> of one hundred feet. CPT#4 will be located 150' directly down gradient from the UST location. <br /> CPT#5 will be placed to the north of CPT#4 and 200' northeast of the UST location. CPT#6 will <br /> be placed east of existing CPT#3 at a distance of 200'from the UST location(see a site map attached <br /> for actual location of CPTs). <br /> CPT Sampling and Analysis <br /> Soil samples from the CPTs will be extracted at approximately 30', 55', and 100'feet of depth from <br /> each CPT. Groundwater samples will be extracted from the most permeable strata as shown by the <br /> CPT log. Samples for both soil and groundwater may be extracted at depths lower than 100' if <br /> conditions indicate that action.Samples will be transported under ice and chair:of custody to a State- <br /> certified laboratory. <br /> Soil samples will be analyzed by EPA methods 8020 (BETX), 5030/8015(M) (TPH Gasoline)and <br /> 8260(oxygenates). Water samples will be analyzed by EPA methods 602 (BETX), 5030/8015(M) <br /> (TPH Gasoline) and 8260(oxygenates). <br /> REPORTS AND FUTURE ACTION <br /> Report of Findings <br /> An engineering report of the findings for each soil bore and CPT with soil and water sample analysis <br /> will be issued after the work is completed. The report covering only the CPT work may be separate <br /> from the report on soil borings due to delays is obtaining a Caltrans permit for Right-of-Way access. <br /> Recommendations for any future action will be contained in the latest report. <br /> Future Quarterly Monitoring Well Sampling <br /> After all new monitoring well construction has been completed,quarterly monitoring of all wells will <br /> begin and continue until terminated by PHS/EHD. <br /> Use of Available Funds <br /> The Underground Storage Tank Cleanup Fund Program has not allocated the funds to this site to <br /> complete this Work Plan. The owner will complete portions of this Work Plan as funds become <br /> available from the Underground Storage Tank Cleanup Fund Program and from the owner's site <br /> Page 3 of 4 <br />