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i <br /> A Date July 18, 2006 <br /> C A M E R <br /> . Quarter 2"d Quarter 2006 <br /> OLYMPIAN QUARTERLY GROUNDWATER MONITORING REPORT <br /> Fund Claim No 12820 Address 1022 Frontage Road, Ripon, California <br /> Consulting Co/Project Manager Cambria Environmental Technology Inc/Brandon Wilken <br /> Consulting Co Project No 165-1556 Y)440 <br /> Primary Agency/Regulatory ID No San Joaquin County Environmental Health D1 1 <br /> Site Code 1604 <br /> WORK PERFORMED THIS QUARTER (SECOND - 2006) ` <br /> 1 Performed second quarter groundwater monitoring and sampling activities on May 15, 2007 � 11141 <br /> 2 Submitted quarterly groundwater monitoring report for second quarter 2006 <br /> WORK PROPOSED FOR NEXT QUARTER (THIRD — 2006) <br /> 1 Perform quarterly groundwater monitoring and sampling for third quarter 2006 <br /> 2 Prepare and submit quarterly groundwater monitoring report for third quarter 2006 <br /> 3 Prepare and submit a workplan proposing additional subsurface investigation activities <br /> QUARTERLY MONITORING <br /> . Current Phase of Piolect Monitoring and assessment <br /> Frequency of Groundwater Monitoring Quarterly <br /> Is Free Product (FP) Present on Site No <br /> Cuirent Remediation Techniques Natural Attenuation <br /> Average Depth to Groundwater 22 11 feet below ground surface <br /> Groundwater Flow Direction and <br /> Gradient Northwest, 0 0003 ft/ft <br /> • DISCUSSION 6 <br /> ',+- <br /> od Groundwater levels measured on May 15, 200 indicate that groundwater beneath the site flows <br /> towards the northwest at a gradient of approximately 0 0003 ft/ft Groundwater flow direction <br /> has fluctuated since groundwater monitoring began in August 1999, however the overall trend is <br /> toward the northwest Groundwater elevation contours are shown on Figure 2 <br /> Cambria directed groundwater sampling for monttonng wells MW-1 through MW-3, MW-9 and <br /> MW-10 and commercial supply well DW-1 Wells MW-4 and MW-5 are sampled annually <br /> during the first quarter and, therefore, were not sampled this quarter Advanced <br /> GeoEnviionmental (AGE), of Stockton, California sampled monitoring wells MW-6, MW-7, <br /> MW-8, MW-9 and MW-10, which are owned by Ripon Farm Service (RFS) Table 1 presents <br /> i <br /> H l01ymptast122502 South Hwy 99 Ripon\QM1200612Q0612Q 06 QMR doc 1 <br />