Laserfiche WebLink
I <br /> • • • <br /> A A S6111NC. <br /> August 21, 2002 <br /> San Joaquin County <br /> Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> li <br /> Attention: Mr. Michael J. Infurna Jr. <br /> Senior REHS, LOP/Site Mitigation Unit IV <br /> Subject: Work Plan to Complete Closure Requirements for Former Underground <br /> Storage Tanks, Stockton Army Aviation Support Facility <br /> 2000 Stimson Road, Stockton, California <br /> Site Code: 1732, RO#: 000052 <br /> Dear Mr. Infurna: <br /> Versar, Inc. has prepared this work plan to address the requirements of the San Joaquin County <br /> Public Health Services, Environmental Health Department (PHS-EHD) in soliciting closure of <br /> the subject underground storage tank (UST) case. This work plan has been prepared on behalf of <br /> the California Army National Guard (LANG), Army Aviation Support Facility (AASF); <br /> management of this work is being performed for the CARNG by the Army Corps of Engineers; <br /> Sacramento Division (Army COE). The requirements of the PHS-EHD were presented to the <br /> CANG in a letter dated August 03, 2000, and were subsequently amended in April 2002. The <br /> location of the fueling area at the AASF at 2000 Stimson Road (Site) is shown in Figure 1, Site <br /> Vicinity Map. <br /> BACKGROUND <br /> Two 20,000-gallon UST's containing jet fuel were removed from the AASF fueling area in May <br /> 1998. Three soil samples per UST were collected beneath the two underlying concrete hold <br /> down slabs. Soil sample S=6 contained 0.31 milligrams per kilogram (mg/kg) benzene, 0.91 <br /> a mg/kg toluene, 2.76 mg/kg ethylbenzene, 17..33 mg/kg total xylene isomers, and 184 mg/kg total <br />' petroleum hydrocarbons as jet fuel (TPH j); TPH as kerosene was not detected. The remaining <br /> five soil samples did not contain detected concentrations of petroleum and aromatic <br /> hydrocarbons. During the UST removal soil staining was observed in the southeast corner of the <br /> excavation. The area of impacted soil appeared to be limited, and the UST excavation was <br />{ backfilled. The location of the former USTs and layout of the AASF fueling area is shown in <br /> Figure 2 . <br /> • SACRAMENTO AREA OFFICE • <br /> 7844 MADISON AVENUE, SUITE 167 • FAIR OAKS, CA 95628• TELEPHONE (916) 962-1612 FAX(916)962-2678 <br />