Laserfiche WebLink
4../ <br /> Advanced <br /> �r <br /> GeoEnvironmentaig --� <br /> 07 <br /> 10 March 2000 <br /> AGE-NC Project No. 95-0137 <br /> Mr. Ron Rowe <br /> San Joaquin County Public Health Services <br /> Environmental Health Division(PHS-EHD) <br /> 304 East Weber Avenue, P Floor <br /> Stockton, CA 95202 <br /> Suaicct, Remedial Action Work Plan Addendum <br /> RIPON FARM SERVICE <br /> 22871 South Highway 99, Ripon, California. <br /> Dear Mr. Rowe: <br /> At your direction, Advanced GeoEnvironmental, Inc. (AGE) has prepared this Remedial Action <br /> Work Plan Addendum to supplement the Remedial Action Work Plan (RAWP) dated 20 January <br /> 2000, prepared for the Ripon Farm Service located at the above referenced address. <br /> The RAWP detailed the design of a soil vapor extraction/in-situ air sparging(SVE/IAS)remediation <br /> system for the petroleum hydrocarbon-impacted soil and ground water at the site. <br /> Clean Up Goals: <br /> Clean up goals for the beneficial use of the ground water should be applied to ground water at the <br /> RFS site. A domestic water well is located within the plume of impacted ground water and several <br /> other wells are located within 200 feet to 2,000 feet of the unauthorized release area, therefore, the <br /> highest and best use of the water at the RFS site is for human consumption. Clean up standards for <br /> ground water are set forth in the plan for the Central Valley Basin. 'f lie standards are based on&,c <br /> Maximum Contaminate Level (MCL) for the constituents of concern in drinking water. The <br /> constituents of concern and the associated MCLS are: <br /> • TPH-d and TPH-g, have no MCL, however a general odor/taste threshold of 100 milligram <br /> per liter (mg/l) should be suitable for the RFS site. <br /> • Benzene with an MCL of 0.001 mg/l <br /> • Toluene with an MCL of 0.15 mg/l <br /> • Ethylbenzene with an MCL of 0.7 mg/l <br /> • Xylene with an MCL of 1.75 mg/l <br /> • MTBE with an MCL of 0.01 mg/l <br /> 4005 North Wilson Way, SLocicton,California 95205 <br /> Telephone(209)467-1006 FAX(209)467-1 1 1 R <br />