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Three B's Truck Stop Page 2 of 2 <br /> 14749 N. Thornton Road December 9, 2011 <br /> Lodi, California <br /> Based on the recently collected soil and soil-vapor data and the declining groundwater <br /> dissolved petroleum hydrocarbon concentration trend noted from the samples collected from the <br /> many monitoring wells at this site, your consultant has concluded "asymptotic levels appear to <br /> have been approached, and further SVE and IAS remediation is no longer cost effective <br /> compared to the mass of contamination remaining at the site" and "further SVE and /AS <br /> remediation is not warranted for this site" Additionally, your consultant has recommended that <br /> no further investigation is warranted, additional remediation is not needed, and the site should <br /> be considered for no further action status. <br /> After evaluating your closure request, the EHD has determined that the site is not ready for <br /> closure at this time. Although the SVE and IAS remediation system appears to have been <br /> initially effective at removing petroleum mass and reducing the dissolved petroleum <br /> hydrocarbon concentrations, it may need to be continued if the results of the rebound testing <br /> indicate that significant contamination is still present at the site. Please conduct rebound testing <br /> by collecting ground water samples from the shallow ground water monitoring wells,jpw and <br /> again in six months. If the laboratory data indicates there is no rebound occurring, then a no <br /> further action report (NFAR) should be submitted. If rebound is occurring, then the SVE-IAS <br /> system should be re-activated. After the additional remediation and acquisition of data to <br /> support the site qualifies for no further action, you may submit an NFAR. <br /> You may contact Michael Infurna, Senior REHS at (209) 468-3454 if you have any questions or <br /> wish to discuss the site. <br /> 4� �/O�1(7_ � __5 <br /> Michael J. Infurna Jr., REHS Nuel C. Henderson Jr., PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> c: Mr. James L. Barton, CVRWQCB, Underground Storage Tank Unit, 11020 Sun Center <br /> Drive, #200, Rancho Cordova, CA 95670-6114 <br /> Mr. Kirk Larson, Underground Storage Tank Cleanup Fund, State Water Resources <br /> Control Board, P.O. Box 944212, Sacramento, CA 94244-2120 <br /> Mr. Tim Cuellar, AGE, 837 Shaw Rd., Stockton, CA 95215 <br />