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r <br /> THRIFTY C 1L- CO - <br /> July 27, 1999 1� <br /> �dgs <br /> Mr Mike Infurna, Jr <br /> Senior REHS <br /> County of San Joaquin <br /> Public Health Services/Environmental Health Division <br /> 304 East Weber Avenue, 3rd Floor <br /> Stockton, CA 95202 <br /> RE Former Thrifty Oil Co. Station #172 <br /> 7647 Pacific Avenue <br /> Stockton, CA 95207 <br /> 2nd Quarter 1999, Status Report <br /> Dear Mr Infurna <br /> Presented herein is the Second Quarterly 1999, Status Report prepared for the above mentioned <br /> service station (Figure 1) Presented in this rOii Co has retained Earth Mrt are the results of the anagementte ring efforts <br /> Co {EMC) <br /> ' conducted during the 2nd Quarter 1999 Thrifty <br /> to conduct quarterly monitoring and sampling activities at this site <br /> GROUNDWATER MONITORING <br /> Depth to groundwater is measured in each monitoring <br /> Gauging <br /> obtained from June 1991 through May 1999 is presented in Table 1 and the Field Status Reports are <br /> presented in Appendix A This report covers the period <br /> from a�����go��a P�rangy ng from <br /> groundwater possibly occurs under water table conditions <br /> 29 75 feet below surface grade(bsg)in monitoring well MW-10 to 34 40 feet bsg in momtoring well <br /> MW-6 A groundwater elevation contour map baseQnpo May 04 ftlftOo the southeast to 0 08 ft/ft tdata is presented as oure <br /> the <br /> 2 Groundwater flow direction beneath the site is <br /> southwest <br /> Quarterly Groundwater Sampling <br /> As part of the groundwater monitoring program, groundwater samples were obtained from <br /> monitoring wells MW-3,MW-4,MW-5,MW-6,MW-7,MW-9, <br /> MW-10,MW-11 and VW-2B The <br /> remaining vapor wells ("VW" series) were in they d thtructonphase <br /> h Groundwater sampleoted on the ls were Project <br /> Status Reports, and could not be gauged or same quarter <br /> obtained by Earth Management Company (EMC) and delivered in a chilled state, in an ice chest, <br /> IQ�� <br /> 13539 E Foster Rd , Santa Fe Springs,CA 90670-0138•(562)923-9876 <br />