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b <br />r � <br />PUBUt HEALTH SERdICES <br />SAN JOAQUIN COUNTY <br />J061 KHANNA 1f.D D. M.P.H. <br />Health Officer <br />P.O. Box 2009 • (1601 East Hazelton Avenue) + Stockton, California 95201 <br />( 209) 468-3400 <br />SEP 2 7 1991 <br />GLEN DEMBROFF C(ap <br />ULTRAMAR INC <br />ENVIRONMENTAL DEPARTMENT <br />P O BOX 466 <br />HANFORD CA 93232-0466 <br />OPQU�'.0 <br />RE: Beacon Cardlock #610 IN REPLY REFER TO SITE CODE: 1765 <br />3300 Waterloo Road <br />Stockton, CA <br />As stated in previous correspondence (November 28, 1990 and January <br />31, 1991) and in a meeting held at the San Joaquin Public Health <br />Services, Environmental Health Division (PHS/EHD), on June 26, <br />1991, groundwater contamination is present beneath the above <br />referenced site,. Benzene (1.2 parts per billion (ppb)), toluene <br />(5.1 ppb), total xylenes (1.6 ppb), and total petroleum <br />hydrocarbons (59.9 ppb) were found in the groundwater via <br />monitoring well 14. <br />Pursuant to Section 2652(d) of the Underground Storage Tank <br />Regulations (California Administrative Code, Title 23, Subchapter <br />16) quarterly monitoring reports shall be submitted to PHS/EHD and <br />Central Valley Regional Water Quality Control Board (CVRWQCB) until <br />the investigation and cleanup is deemed adequate. The reports are <br />to show the following: <br />-status of investigation and cleanup activities including <br />the results of all investigations completed to date; <br />-proposed continuing or next phase of investigation; <br />-method of cleanup proposed or implemented, schedules for <br />the completion of the investigation of the site and <br />remediation; <br />-method and location of disposal of the released <br />hazardous substance and any contaminated soil, <br />groundwater or surface water; <br />-manifest required for transport of hazardous substances; <br />-monitoring well data including groundwater elevation, <br />pH, conductivity, gradient; <br />-analytical results of groundwater or soil sampling; and <br />-site map showing the "zero line" of contamination, if <br />known, and changes in the above measurements over the <br />last quarter. <br />A Division of San Joaquin Comm Health Care Services <br />