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Sarre JoagWn County <br /> OP4U'tN• C <br /> Environmental Heafth Department ent DIRECTOR <br /> Linda Turkalte,REHS <br /> r.' 186E East Hazelton Avenue <br /> I •-1 PROGRAM COORDINATORS <br /> y: Stockton, California 95205-6232 Robert McClellon,REHS <br /> Jeff Carruesco.REHS,RDI <br /> Website: www.s� 1ehd Kasey Foley, REHS <br /> callFoa��P g ov.or 8 Rodney Estrada,REHS <br /> Phone: (209)468-3420 Adrienne Ellsaesser.REHS <br /> Fax: (209)464-0138 <br /> January 21, 2015 <br /> Paula Levand <br /> Levand-Bright Family Trust <br /> 24692 Sand Wedge Lane <br /> Valencia, CA, 91355 <br /> Subject: Preliminary Site Assessment Work Plan Site Cade: 9403 <br /> Levand-Bright Property <br /> 3 East Eleventh Street <br /> Tracy, California <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed Preliminary <br /> Site Assessment Work Plan (Work Plan), dated 02 January 2015, prepared by Advanced <br /> GeoEnvironmental (AGE). The Work Plan was submitted in response to EHD letter dated 13 <br /> November 2014, directing the assessment of the lateral and vertical extent of contamination that <br /> resulted from the unauthorized release from a former underground storage tank (UST) system. <br /> In the Work Plan, AGE proposes to: <br /> v Advance a total of eight soil borings using direct push drilling technology up to 50 feet <br /> below surface grade (bsg); <br /> • Collect soil and groundwater samples during advancement of the borings; <br /> m Analyze samples utilizing a certified laboratory. <br /> The EHD approves the scope of work proposed in the Work Plan with the following conditions: <br /> ® As depth to water in the subject site's area is approximately 10 feet bsg, limit the total <br /> depths of lateral borings to the proposed 20 feet bsg and tank pit boring to the proposed <br /> 40 feet bsg; <br /> ® As the UST possibly contained waste fuel, add EPA 8270 (semivolatile organic <br /> compounds) to the analytical regimen for a shallow tank pit soil sample; <br /> • Neat cement (grout) shall be mixed at a ratio of one 94-pound sack of portland cement <br /> with 5 to 6 gallons of'clean' potable water; <br /> ® Boreholes deeper than 30 feet bsg and/or containing groundwater shall be filled with <br /> grout, pumped from the bottom of the borehole up to at least 3 feet bsg through a tremie <br /> pipe that extends to within 5 feet of the borehole's total depth; <br /> • The EHD requires that work begin no sooner than 5 working days after the EHD permits <br /> have been issued; and <br /> e The EHD requires inspections to be scheduled with Johnny Yoakum, REHS at least 5 <br /> workdays prior to implementing fieldwork, Mr. Yoakum may be contacted via email at <br /> JYoakum0slcehd.com or (209) 468-3147. <br />