Laserfiche WebLink
Corral Hollow Sanitary Landfill Page 1 of 2 21 December 2012 <br /> San Joaquin County <br /> INSPECTION T <br /> CENTRAL VALLEY REGIONAL WATER QUALITYCONTROL BOARD <br /> REPORT DATE: 21 December 2012 <br /> DISCHARGER: San Joaquin County Department of Public Works <br /> DID NUMBER(S): 513390307001 (WDR) <br /> FACILITY NAME: Corral Hollow Sanitary Landfill (CHSL) <br /> FACILITY LOCATION &COUNTY: 31130 Corral Hollow Rd, San Joaquin County <br /> CONTACT(S): Mike Carroll, San Joaquin County Department of Public Works (209)468-8504 <br /> INSPECTION DATE: 29 November 2012 <br /> INSPECTED BY: Vinoo Jain, P.E. WRCE, Title 27 Permitting and Mining <br /> ACCOMPANIED BY: Mike Carroll, Joyesh Chandra, San Joaquin County Department of Public Works <br /> OBSERVATIONS AND COMMENTS: <br /> 1.Background: <br /> Central Valley Regional Water Board staff("Board Staff)on 29 November 2012 conducted a site inspection of <br /> CHSL as part of the Waste Discharge Requirements (WDRs) Order R5-2001-176 revision process. <br /> The inspection was conducted to inspect the northeast area of the landfill where the existing closure cover is <br /> to be extended over approximately 1.6 acres of previously uncovered landfill refuse. The closure cover <br /> extension is part of corrective action being performed by the Discharger to limit the release of Volatile Organic <br /> Compounds (VOCs) to underlying shallow groundwater. The inspection primarily focused on storm water <br /> drainage in the northeast corner and its potential contribution to shallow groundwater mounding at <br /> Groundwater Monitoring Well (GMW) S13-1. <br /> 2. Site Inspection: <br /> During the inspection, Board Staff observed several storm water drainage issues at the northeast corner of <br /> CHSL that may be contributing to groundwater mounding at GMW SBA(See Attachment 1). Attachment 1 <br /> shows a culvert (See Photo#1 of Attachment 3)that crosses under Corral Hollow Road. A Hydrologic Report <br /> dated 19 April 2012 prepared by Shaw Environmental, Inc. (Shaw Report)states that this culvert drains <br /> approximately 4.33 acres. During a 24-hour 1-in-100-year storm event the report states that the hydraulic <br /> volume through the culvert could reach 38,918 cubic feet of storm water. All of this discharger currently drains <br /> in an area where there exists uncovered refuse. This refuse is scheduled to be covered in 2013. However, in <br /> Approved:` Inspection ID# 10680856 WDID# 5133.90307001 <br />