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,1j Aik PETE WILSON, Governor <br /> STATE�', LIFORNIA-Environmental Protec gency . <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD �G <br /> CENTRAL VALLEY REGION <br /> 3443 Routier Road,Suite A <br /> Sacramento,CA 95827-3098 <br /> PHONE:(916)255-3000 <br /> FAX:(916)255-3015 <br /> 19 June 1995 JL"J 2 O 1S-, <br /> Mr. Chris Prescott EN✓(RONMENTA ,q rH <br /> US Army Corps of Engineers PERMITISERy;�� <br /> Sacramento District <br /> 1325 J Street <br /> Sacramento, CA 95814-2922 <br /> REVIEW COMMENTS ON THE PROJECT WORK PLAN FOR THE UNDERGROUND STORAGE <br /> TANK REMOVAL AT THE TRACYAUXILL4RY FIELD NO. 51 TRACY, SAN JOAQUIN COUNTY <br /> We have reviewed the Project Work Plan (PWP), dated April 25, 1995, for the work at the Tracy Auxiliary <br /> Field No. 5 site near Tracy, in San Joaquin County. The PWP, which was prepared by CKY Inc. on behalf of <br /> the US Army Corps of Engineers (USACE), was forwarded to our office by the USACE on May 15, 1995. In <br /> general,the PWP adequately describes the procedures to be used during the planned removal of one 10,000 <br /> gallon underground fuel storage tank. The USACE must also obtain concurrence with the PWP from the San <br /> Joaquin County Environmental Health Division to ensure that the proposed procedures follow its guidelines and <br /> requirements. <br /> The PWP references a General Management Plan(GMP),which was not included as part of the submittal. The <br /> USACE should submit a copy of the GMP, as well as any other pertinent reports on the site that have been <br /> prepared,to our office to complete our files. At the present time, <br /> the PWP and the INPR are the only reports <br /> that we have on file concerning this site. The PWP only addresses work related to the removal of this one <br /> 10,000 gallon tank. According to the Inventory Project Report (INPR) for this site, dated January 1990,there is <br /> also an 8,000 gallon underground fuel storage tank at the site that may have been used by the Department of <br /> Defense. An explanation of why the removal of this tank is not addressed in the PWP should be provided. <br /> It is our understanding that the San Joaquin County Public Health Services Department will be the lead <br /> regulatory agency for the actual tank removal. Since this is a formerly used defense facility,the Regional Water <br /> Quality Control Board, Central Valley Region will be the lead regulatory agency on the site for water quality <br /> concerns, including underground storage tanks, if evidence collected during the tank removal indicates therelease a <br /> threat to water quality, or any soil contamination extends beyond the depth of overexcavation. As such, p <br /> forward a copy of the Tank Closure Report to our office for review. The Technical Report should also contain <br /> recommendations for further site investigation and remediation, if required, in addition to summarizing the <br /> results of the fieldwork conducted during the tank removal, as described in the PWP. Also,please submit a <br /> copy of the proposed schedule for the site work to our office. If you have any questions or comments, please <br /> call me at (916) 2��5pp5-3066. <br /> K <br /> J HN RUSSELL <br /> Associate Engineering Geologist <br /> cc: San Joaquin County Environmental Health Division <br />