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DRAFT 1219 . 4203 <br /> Drainage from the building, unloading, packaging, and tank <br /> farm areas flows through drains to underground sewers <br /> connecting to four earthen ponds equipped with double <br /> synthetic liners and an approximate capacity of 160, 000 <br /> gallons. <br /> The pond water system operates in a closed cycle with no <br /> discharge. The pond water is maintained at a neutral pH by <br /> the addition of caustic or acid then is recycled through a <br /> sand filter back to the process. The State Water Quality <br /> Control Board makes periodic inspections and samples the <br /> ponds. There is no indication of any problems with the <br /> operation. <br /> SCOPE OF WORK <br /> Provide all equipment, accessories, personnel, labor and <br /> materials to perform the tasks described below: <br /> 1. Drill four hollow-stem auger borings to <br /> first encountered groundwater and collect <br /> soil samples at the surface and at <br /> five-foot intervals thereafter until <br /> groundwater is encountered. <br /> -7- <br />