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CENTRAL VALL REGIONAL WATER QUALITY C TROL BOARD 3 December 2014 DISCHARGER: Foothill Sanitary Landfill, Inc.; San Joaquin Co. Dept. of Public Works LOCATION & COUNTY: Linden, San Joaquin County CONTACT(S): Taj Bahadori & Michael Carroll — San Joaquin Co. DPW INSPECTION DATE: 21 November 2014, 10:00 a.m. INSPECTED BY: John Moody and Marty Hartzell, Central Valley RWQCB ACCOMPANIED BY: Taj Bahadori, Michael Carroll, Bill Baier, and Joyesh Chandra — San Joaquin Co. DPW; Robert McClellan, San Joaquin Co. Dept. of Environmental Health Title 27 Permitting Unit staff conducted an inspection of the Foothill Landfill to identify issues relevant to updating the facility's waste discharge requirements (currently in progress) and to view an area where the Discharger plans to construct the next landfill expansion module (Module 2). The landfill is currently regulated under WDR Order No. R5-2003-0020 and Cleanup and Abatement Order (CAO) No. R5-2004-0706. The inspection also included various areas of the site where the Discharger implemented a 2006 Site Improvement Program under the CAO to address historical groundwater impacts from Module I. OBSERVATIONS AND COMMENTS: The weather at the site was overcast and cool, about 52 degrees and breezy. Site conditions were dry. Module 1 We first visited the top of Module 1 to observe active landfill operations and get a view of the site. The top of the module was at an elevation of about 410 feet MSL, corresponding to about 14 months of remaining capacity. Waste was being tipped on the north face of the module at the time of the inspection—The-lop-of the module (i.e., winter pad) appeared to be in good condition and consisted of a brownish gray sand. The pad was designed for wet weather conditions using soil from the onsite borrow area west of M-1 and recycled wood debris stockpiled near the white goods tipping area. Other winterization controls implemented in the active area included construction of a soil diversionary berm upslope of the active face and placement of tarp in adjacent areas as alternative daily cover. See Photos 1 and 2. All of the module's intermediate cover slopes appeared to be vegetated, except for the upper slopes on the east side of the module where broken up sod clumps had already been applied. The Discharger indicated that the clumps had not been rolled yet and that vegetation would not start growing until it rains. I did not see any exposed waste or erosion rills in these areas. Drainage from the module is directed to an unlined storm water pond immediately east of the unit. See Photos 3 through 5. 1 also viewed the area where Module 1's northern side slope partially overlaps the southern slope of adjacent Module I. An access road had been constructed on a bench between the two - 1 -