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. 0 <br /> 41 <br /> • '0*- <br /> Environmental Technology,Inc. <br /> • May 9, 1996 <br /> • • N r.Ron Rowe <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Ave., 3rd Floor <br /> Stockton, California 95201-0388 <br /> Re: Corrective Action Feasibility Study <br /> Shell Service Station <br /> 341 East Main <br /> Ripon, California <br /> WIC#204-6562-(j804=` "{ <br /> Dear Mr. Rowe: <br /> As you are aware,the tanks, dispensers, and piping were recently removed and replaced with new units at <br /> the site referenced above. During this work,we stockpiled sandy soil from the tank and piping excavations <br /> on the site. Our original intention was to replace as much of the soil in the excavations as possible to j <br /> minimize.costs. However, new pea gravel backfill was required for the new tanks and piping, which <br /> precluded the use of most of the excavated soil as backfill: The volume of soil that could have been replaced <br /> in the excavations after treatment was only about 20 cubic yards to cover the tops of the excavations. <br /> It did not appear practical to investigate on site treatment alternatives for the small volume of soil that could <br /> have been replaced in the excavations since this would have required us to prepare a plan for the treatment, <br /> implement the plan,report the results of the work and then backfill the soil. The cost-to treat the soil on site <br /> would have been significantly more than the cost to dispose of the 20 cubic yards of soil at a Class III landfill <br /> along with the remaining stockpiled soil. <br /> We apologize for any misunderstanding that may have occurred. Please call me at(510)420-9172 if you <br /> ._ .___ <br /> have any questions or comments. <br /> Sincerely, <br /> Cambria Envir0 mental Technology,Inc. <br /> N..Scott M cLeod, R.G. <br /> Principal Geologist <br /> cc:.R. Jeff Granberry, Shell Oil Products Company <br /> D:\PROJEC71SI3ELL\RIP00804\CAP4.W PD <br /> I <br /> 1144 Sixty-Fifth Street Suite C Oakland, CA 94608 Fax(510)420-9170 Phone(510)420-0700 <br />