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San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> °.. c Donna Heran,REHS <br /> 600 East MainStreet <br /> .. < Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Robert McGlellon,RENS <br /> Jeff Carruesco,REH5, RDI <br /> �r Kasey Foley, RENS <br /> website: WW <br /> w.sjgov.org/ehd <br /> Phone: (209) 468.3420 <br /> Fax: (209) 464-0138 <br /> January 8, 2010 <br /> City of Ripon Robert & Carol Madsen Trust <br /> c/o Kevin Werner 20020 North Ripon Road <br /> 259 North Wilma Avenue Ripon, CA 95366 <br /> Ripon, CA 95366 <br /> Subject: City of Ripon/Madsen Sunrise Dairy <br /> 239 South Stockton Street <br /> Ripon, CA 95366 <br /> In correspondence dated January 5, 2010 you were notified that the above referenced site <br /> has been assigned to the San Joaquin County Environmental Health Department's Local <br /> Oversight Program for oversight of assessment and clean up activities at contaminated <br /> underground storage tank (UST) sites. <br /> On November 12, 2009, one three-compartment underground storage tank was removed <br /> from this site. Soil samples for laboratory analysis were collected from beneath the tank <br /> following its removal, and two composite samples were collected from the soil stockpile. <br /> Analytical results reported 2,000 milligrams per kilogram (mg/kg) total petroleum <br /> hydrocarbons (TPH) as diesel and 77 mg/kg TPH as gasoline in sample TW-13 collected <br /> from the west end of the tank pit at 13 feet below surface grade, 35 mg/kg TPHd in <br /> stockpile sample SP1-A,B,C,D and 27 mg/kg TPHd in stockpile sample SP2-A,B,C,D. It is <br /> the understanding of the EHD that the stockpile was returned to the tank excavation. <br /> Per California Code of Regulations Title 23, Division 3, Chapter 16 Section 2722, please <br /> proceed with submittal of a work plan to being the investigation of the vertical and lateral <br /> extent of the documented contamination in both soil and groundwater. All work and <br /> reports which require geological or engineering evaluations must be performed under the <br /> direction of an appropriately California registered or certified professional. The work plan <br /> is due for submittal to the EHD no later than March 5, 2010. <br /> If you have any questions please contact Lori Duncan at (209) 468-0337 or by email at <br /> Iduncan s'cehd.com. <br /> Sincerely, <br /> Lori Duncan, REHS Nuel C. Henderson, Jr., PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> c: James Barton, CVRWQCB, 10020 Sun Center Drive #200, Rancho Cordova, CA 95670 <br />