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California Regional Water Quality Control Board <br /> Central Valley Region <br /> Robert Schneider,Chair (a <br /> Winston H.Hickox Gray Davis <br /> Secretaryfor Sacramento Main Office Governor <br /> Environmental Internet Address: http://www.swrcb.ca.gov/rwqcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 F r 4 2003 <br /> .3 February 2003 'H <br /> C <br /> ivIESEALTH <br /> W. Michael Carroll <br /> San Joaquin County Dept. of Public Works <br /> Solid Waste Division <br /> P.O. Box 1810 <br /> Stockton, CA 95201 <br /> REVIEW OFFIRST,SECOND c&THIRD QUARTER2003MONIFORLIVGRETORTS, <br /> CORRAL HOLLOWSANITARYLAXDFILL,SANJOAQUINCOUNTY(CASENO <br /> 1"6- <br /> We have reviewed the Corral Hollow Sanitary Landfill, First, Second, and Third Quarter 2003, <br /> Groundwater and Surface Water Monitoring Reports. Based on our review,we find the report(s) <br /> incomplete. The reporting dates as stated in WDRs Order No. 5-01-176 and dates of receipt are as <br /> follows: <br /> First Quarter Due Date Date Received Comment <br /> 30 Aril 2002 10 May 2002 Late <br /> Second 31 July 2002 2 August 2002 Late <br /> Third 31 October 2002 10 December 2002 Late <br /> The County is required to address the following comments: <br /> First Quarter <br /> 1. Groundwater: Impacted well MW-5: Increasing trend in Electrical Conductivity, TDS, and <br /> Chloride; decreasing trend in pH; VOCs continue to impact well. Alkalinity and bicarbonate are <br /> also increasing over time. The attached time-series graphs show the trends. <br /> 2. Surface water: Transmittal letter states contractor was not notified of updated WDRs; therefore, <br /> first storm water event did not include the new monitoring parameters and field parameters listed <br /> in Table III of the WDRs. Table 2 shows quarterly monitoring and field parameters for SW-1 and <br /> SW-2 with a sampling date of 1/8/02. Please clarify. <br /> 3. Figure 1, Landfill Vicinity Map and Figure 2, Groundwater Contour and Sampling Location Map <br /> were not included in the report. Please ensure that all maps are included in subsequent monitoring <br /> reports. <br /> California Environmental Protection Agency <br /> Q?Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swrcb.ca.gov/rwqcb5 <br />