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• <br />TABLE 19-1 <br />COMPARISON OF PERCOLATED WATER WITH <br />THE COLORADO PRIMARY DRINKING WATER REGULATIONS <br />AND NPDES REGULATIONS <br />• <br /> <br /> <br /> <br />ONSTITUENT <br /> <br />PERCOLATED <br />WATER CO PRIMARY <br />DRINKING <br />WATER <br />REGULATIONS <br /> <br />NPDES <br />REGULATIONS <br />pH Su 7.74 --- 6.0 - 9.0 <br />Oil & Grease mg/I <1 --- 10 <br />Fe mg/I 1.4 --- 3.5 <br />Mn mg/I 0.3 --- --- <br />Pb mg/I 0.0 0.05 --- <br />B mg/I 0.4 --- --- <br />As mg/I <0.1 0.05 --- <br />Se mg/I <0:1 0.01 --- <br />Hg mg/I <0.1 0.002 --- <br />Mo mg/I <0.1 --- --- <br />Total <br />Suspended <br />Solid mg/I 9 --- 35" <br />Limit for 30 day average. <br /> <br />