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Foothill Landfill <br />Monitoring Implementation Plan <br /> <br /> <br /> <br />MIP Page 6 <br />Outfall ST-5 <br />Outfall ST-5 is the overflow of the northeast retention <br />basin which receives storm water runoff from <br />landfills LF-1 and LF-2. Industrial activities include <br />unloading of waste materials; load checking; earth <br />moving and heavy equipment traffic; handling of <br />trash and debris; equipment fueling and maintenance; <br />operation and maintenance of the leachate, landfill <br />gas, and gas condensate collection and conveyance <br />systems. Because this area handles landfill wastes, <br />the 40 CFR Part 445 ELGs apply to this outfall. <br /> <br /> <br />The names of the outfalls / discharge monitoring points were changed to avoid confusion <br />with the names used in the facility’s WDR. “SW” numbers apply to WDR sampling. <br />Because of adjustments with the IGP required sampling program, it was thought best to <br />disassociate the two permits and utilize unique sample location identification references. <br />They were changed as shown in the following table. <br />Table MIP-2.0 <br />SWPPP Reference Names <br />New SWPPP <br />Reference Name <br />Old SWPPP <br />Reference Name <br />ST-2 SW-2 <br />ST-3 SW-3 <br />ST-4 SW-4 <br />ST-5 SW-5 <br /> <br />Sample overflow from <br />the settling basin <br />Figure 30 – Discharge / <br />Monitoring Point ST-5