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e <br /> San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> Donna Heran,REHS <br /> Q: ���—• za 1868 East Hazelton Avenue <br /> Stockton, California 95205-6232 PROGRAM COORDINATORS <br /> 1. Robert rvlcCleIIon,REHS <br /> Jeff Carruesco, RENS,RDI <br /> cq' •..... �i�P Website:www.sjgov.org/ehd Kasey Foley,RENS <br /> Linda Turkatte,REHS <br /> Phone: (209)468-3420 Rodney Estrada,REHS <br /> Fax: 209)464-0138 Adrienne Ellsaesser,REHS <br /> July 22, 2014 <br /> Southgroup Acquisition Company LLC <br /> 15 Atkinson Road <br /> Rockville Center, NY 11570 <br /> Subject: 7-Eleven Store#14117 <br /> 2725 Country Club Blvd <br /> Stockton, CA 95204-3937 <br /> The San Joaquin County Environmental Health Department (EHD) has received and reviewed <br /> Work Plan for Well Destruction, dated 30 May 2014, prepared and submitted by your consulting <br /> firm, Stantec Consulting Services, Inc. (Stantec), on your behalf for the above-referenced site. <br /> In Work Plan for Well Destruction, Stantec proposed destruction of a total of 12 wells. Based on <br /> recent groundwater data and residual soil impact, Stantec proposed to destroy monitoring wells <br /> MW-3, MW-4, MW-8 and oxygen injection wells, 1-4 and 1-5 by over drilling and removing all well <br /> contents (conductor casing, well casing, screen, filter pack, grout sealant). Stantec proposed to <br /> destroy the remaining wells, MW-1, MW-5, MW-6, and MW-7 and oxygen injection wells 1-1, 1-2, <br /> and 1-3 by pressure grouting. The pressure grouting method briefly consists of filling the well and <br /> filter pack with neat cement grout through a tremie pipe from total depth to top of well casing. <br /> Grout will settle and then topped off before pressure is applied to the wells at 25 pounds per <br /> square inch for ten minutes. The proposed well destruction through pressure grouting is approved <br /> by EHD except for monitoring well MW-6, due to residual methyl-t-butyl-ether (MTBE) in <br /> groundwater. Monitoring well MW-6 must be over drilled along with the wells previously proposed <br /> for over drilling. In the work plan, Stantec proposed to submit a Well Destruction Report after all <br /> wells have been destroyed summarizing the field activities. In addition to the relevant data, <br /> include properly signed manifests for all disposed water/soil waste related to the destruction of the <br /> wells at this site. <br /> Stantec proposed to use neat portland cement as the sealing material for the wells. All water <br /> used for the purpose of sealing a well must be potable water and not water that has been <br /> displaced from a well that is to be destroyed. With these conditions, the EHD approves the work <br /> plan. Please submit a completed Mel t r``�E� �ile Record form, a Well and Borin�.Per�}. Application <br /> form, and a permit/inspection fee of 75 (permit fee will increase to , ,- 15b- s of August <br /> 1, 2014). Notify the EHD for inspection of all destruction of wells at least two weeks prior to <br /> destruction activities. The EHD will issue a closure letter once and all wells have been properly <br /> destroyed and appropriately signed waste manifests have been submitted to this agency. <br /> Please contact Angelica Sandoval Marin (209) 468-2807 or amarin@sjcelid.com if you have any <br /> questions. <br /> Sjncerely, <br /> Angelica S. Marin, REHS Nuel C. Henderson, Jr., PG <br /> Registered Environmental Health Specialist Senior Engineering Geologist <br /> RECEIVED JUL 2 x 2913 <br />