SITE INFORMATION AND CORRESPONDENCE FILE 2

Home Browse Search

\..� "NOW San Joaquin County DIRECTOR Donna Heran, REHS oP""'"' .� Environmental Health Department f' ASSISTANT DIRECTOR a• I,F 600 East Main Street Laurie Cotulla,REHS Ail X Stockton, California 95202-3029 PROGRAM COORDINATORS Mike Huggins, REHS,RDI O P Website: www.s ov.or /ehd Margaret Lagorio, REHS qGi i O60 19 9 Robert McClellon,REHS Phone: (209)468-3420 Jeff Carruesco,REHS,RDI Fax: (209)464-0138 Kasey Foley, REHS May 19, 2009 Mr. Stephen Valentine Steve & Genes Service 6232 Hemet Avenue Stockton, CA 95207 Subject: Steve & Genes Service 2315 N. EI Dorado St. Stockton, CA 95204 The San Joaquin County Environmental Health Department (EHD) has reviewed correspondence (the GTI letter) dated January 23, 2009, and Report Groundwater Monitoring 1st Quarter 2009 & Remediation System Status Report (QR), dated April 3, 2009, both submitted on your behalf by Geological Technics, Inc. (GTI). In the GTI letter, GTI recommended reduction of the number of additional monitoring wells to be installed for additional site assessment as was proposed in the Additional Site Characterization Workplan (WP) dated March 18, 2009 which was approved by the EHD by letter dated October 27, 2008, and to focus on remediation. To date, the CUF has reimbursed is $1,082,897.00. Please note the EHD requires that adequate measures, including additional site assessment and remediation, be taken to pursue site closure in accordance with state law regardless of availability of additional monies from the CUF. To reduce the scope of work noted in the WP, GTI proposed installing one borehole downgradient off-site, approximately 40 feet north of MW-8, and if contamination is encountered, monitoring well MW-110 would be installed in the borehole. The EHD concurs with GTI's recommendation to focus site activities on remediation and approves GTI's proposal to conduct additional site assessment as noted in the GTI letter. Submit to the EHD a well permit application and $89.00 permit fee, and $315.00 inspection fee for each parcel drilled and a copy of the encroachment permit for the boring(s) in the public right of way. Once the well permits have been approved, notify the EHD of the proposed schedule for the work. The EHD requires a minimum 48-hour notice prior to initiation of any field work on the site. This proposed work should be performed within 60 days of the date of this letter. In the QR, GTI indicated that the operation of the dual phase extraction (DPE) and ground water extraction (GWE) system has been shut down on numerous occasions due to operating problems including iron-carbonate scale buildup in the groundwater treatment system, a possible release of tert-butyl alcohol (TBA) exceeding the City of Stockton Waste Discharge Permit, bio-fouling of the groundwater extraction storage tank and level gauge, and high water limit alarms. During the first quarter 2009, the thermal oxidizer was estimated to be in operation for 42.95 days and the total soil vapor mass of total petroleum hydrocarbons quantified as gasoline (TPH-g) removed was 2.39 pounds