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By September 24, 2013 the extension of the closure cap was complete, with the exception of <br /> hydroseeding. <br /> On September 30, 2013, the County submitted the Certification Report for the Closure Cap <br /> .Extension project. <br /> On or about October 24, 2013,hydroseeding was completed,thereby concluding construction <br /> activities. <br /> MONITORING PROGRAM <br /> Water quality is monitored in accordance with WDR Order No. R5-2013-0013 and the monitoring <br /> program approved by the Regional Water Quality Control Board. <br /> Water purged from wells prior to sampling is disposed of to the ground around the wells, away <br /> from surface drainage features. This is a common practice when the water sampled is non-toxic, <br /> as at CHSL. <br /> Progress of Corrective Action Measures is submitted twice yearly (during 1s'and 3rd quarters), <br /> documenting the effectiveness of current corrective action measures. <br /> Groundwater <br /> The groundwater monitoring network consists of nine monitoring wells: seven monitoring the <br /> shallow aquifer perched on the Corcoran clay layer east of the CHSL, and two monitoring the <br /> deep aquifer. <br /> Groundwater samples are analyzed for the following quarterly field and monitoring parameters as <br /> specified in WDR Order No. R5-2013-13: <br /> Groundwater Elevation Total dissolved solids(TDS) <br /> Temperature Chloride <br /> Electrical conductivity(EC) Sulfate <br /> pg Nitrate-nitrogen <br /> Turbidity Volatile organic compounds(VOCs) <br /> Groundwater samples are analyzed semi-annually for these additional parameters: <br /> Carbonate Magnesium <br /> Bicarbonate Potassium <br /> Calcium Sodium <br /> Corral Hollow Sanitary Landfill 9 Department of Public Works/Solid Waste <br /> 1 St Quarter 2014 Groundwater Monitoring County of San Joaquin—March 15,2014 <br />