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San Joaquin County
<br /> p u i
<br /> DIRECTOR
<br /> Environmental
<br /> Environmental Health Department Donna Heran, REHS
<br /> ' 0� 600 East Main Street
<br /> PROGRAM COORDINATORS
<br /> v < Stockton, California 95202-3029 Robert McClellon,REHS
<br /> Jeff Carruesco,REHS,RDI
<br /> -- — Kasey Foley,REHS
<br /> cq..=.: P • Website: www.sjgov.org/ehd
<br /> <iFOR" Phone: (209) 468-3420
<br /> Fax: (209) 464.0138
<br /> March 1, 2010
<br /> Mr. Paul Zumberge
<br /> Frontier Transportation, Incorporated
<br /> 3577 West Philadelphia
<br /> Chino Hills, California 91710
<br /> Subject: Frontier Transportation, Incorporated
<br /> 425 Larch Road
<br /> Tracy, California 95376
<br /> Dear Mr. Zumberge:
<br /> The San Joaquin County Environmental Health Department (EHD) is extending the date for
<br /> submitting a site conceptual model, a work plan for the installation of an additional
<br /> monitoring well/s, and a work plan for sampling domestic wells down-gradient of the above-
<br /> referenced site from January 31, 2010, to March 15, 2010. Mr. Andrew Payne, Professional
<br /> Geologist of Ami Adini & Associates, Inc., requested this extension by telephone on
<br /> February 16, 2010.
<br /> The EHD directs that the following monitoring wells be monitored and sampled during the
<br /> second and fourth quarters of each year: MW-1, MW-2, MW-3R, MW-4, MW-8, MW-9,
<br /> MW-17, MW-19, MW-20 through MW-25, and MW-27. Analyze groundwater samples
<br /> collected from these wells for total petroleum hydrocarbons quantified as gasoline (TPHg);
<br /> benzene, toluene, ethyl benzene, and total xylenes (BTEX); methyl tertiary-butyl ether
<br /> (MTBE), ethyl tertiary-butyl ether (ETBE), tertiary-butyl alcohol (TBA), tertiary-amyl methyl
<br /> ether (TAME) and di-isopropyl ether (DIPE); and omit the analyses for 1,2-dichloroethane
<br /> (1,2-DCA) and 1,2-dibromoethane (EDB). Biennially monitor and sample monitoring wells:
<br /> MW-5, MW-6, MW-7, MW-10 through MW-16, MW-18, and MW-26; analyze these wells for
<br /> TPHg and MTBE, only.
<br /> If you have any questions, please contact Vicki McCartney at (209) 468-9852, or by e-mail
<br /> at vmccartney@sjcehd.com.
<br /> Sincerely, ?- /
<br /> Victoria L. McCartney, REHS Nuel C. Henderson, Jr., PG
<br /> Senior Registered Environmental Health Specialist Engineering Geologist
<br /> c: Mr. Andrew Payne, PG, Ami Adini & Associates, Inc., 4609 Russell Avenue, Los
<br /> Angeles, California 90027
<br /> Mr. James L.L. Barton, PG, California Regional Water Quality Control Board Central
<br /> Valley Region, 11020 Sun Center Drive, Suite 200, Rancho Cordova, California 95670
<br />
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