|
Interstate Shell Page 2
<br /> 620 West Charter Way July 13, 2009
<br /> Stockton, California 95206
<br /> To comply with the State Water Resources Control Board Resolution No. 2009-0042, the
<br /> EHD approves the following monitoring and sampling schedule:
<br /> • Collect groundwater samples semi-annually from monitoring wells: MW-2, MW-4,
<br /> MW-8, MW-9, MW-13-50, MW-14-77, MW-16-50, -MW-16-77, MW-16-90, and
<br /> MW-17-50.
<br /> • Collect groundwater samples annually from monitoring wells: MW-1, MW-3, MW-5,
<br /> MW-6, MW-7, MW-10, MW-11, MW-13-77, MW-14-50, and MW-15-77.
<br /> Analyze all samples for TPHG, BTEX, methyl tertiary-butyl ether (MTBE), and tertiary-
<br /> butyl alcohol (TBA). . In addition to the above, include the analysis for 1,2-dichloroethane
<br /> (1,2-DCA) when analyzing samples from MW-13-50, MW-14-77, MW-16-50, MW-16-90,
<br /> and MW-17-50.
<br /> Please contact Vicki McCartney at (209) 468-9852 or by email at vmccartney(a-)sicehd.com
<br /> if you have any questions regarding this letter.
<br /> Sincerely,
<br /> Victoria L. McCartney, RENS Nuel C. Henderson, Jr., PG
<br /> Senior Registered Environmental Health Specialist Engineering Geologist
<br /> c: Ms. Aubrey Cool, PG, Conestoga-Rovers & Associates, 5900 Hollis Street, Suite A,
<br /> Emeryville, California 94608
<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 />
|