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San J ©aguon County <br /> o P. . <br /> WN. <br /> . . .�, ( DIRECTOR <br /> Lo % I�� ctO : V� L� � � U� � <br /> Donna Heran, RENS <br /> 600 East I@daun Stuee <br /> [ Stockton , Gaiifofl"nia 952023029 PROGRAM COORDINATORS <br /> Robert McClellan, REFS <br /> . ' ° Jeff Carruesco, REFS,. RDI <br /> �Cq' • .-"" ��P Website: www.Sjgov. emrg1ohd Kasey Foley, REFS <br /> Linda Turkatte, RENS <br /> Phone: (209) 4683420 <br /> Fax: (209) 464-0138 <br /> October 28, 2010 <br /> Messrs, Kirk Larson, PG, and Robert Trommer, CHG <br /> State Water Resources Control Board <br /> Division of Financial Assistance <br /> 1001 1 Street <br /> Sacramento CA 95814 <br /> Subject: 715 Hunter Street N , Stockton , CA <br /> Annual Five-Year Review Update Recommendations September 2010 <br /> San Joaquin County Environmental Health Department (EHD) has received and reviewed the <br /> annual five-year review update letter dated 27 September 2010 from Kirk Larson of the State <br /> Water Quality Control Board (SWQCB) Cleanup Fund (CUF) for above referenced site. The <br /> CUF recommends that the EHD direct the responsible Party (RP) to consider a more aggressive <br /> remedial technology that will more rapidly achieve water quality objectives (WQOs). <br /> The site is undergoing dual phase extraction (DPE) at this time. The CUF estimated the mass <br /> recovery rate at 2 pounds per day; the EHD estimates it at slightly over 20 pounds per day. <br /> Considering site conditions and plume distribution , the EHD is of the opinion that not much more <br /> can reasonably be implemented at the site; however, the EHD will direct the RP to evaluate the <br /> effectiveness of the current remedial technology, the potential benefit of installing additional <br /> DPE wells, or implementing additional remediation technologies . Questions or comments should <br /> be directed to Harlin Knoll at (209) 468-3442 or to Nuel Henderson at (209) 468-3436 . <br /> Sincerely, <br /> 7411 <br /> Harlin Knoll , REHS Nuel Henderson , PG <br /> Senior Registered Environmental Engineering Geologist <br /> Health Specialist <br /> Annual 5-Year Review Update Response 2010. doc <br />