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i It If ( I ii 1 11 c <br />PHG IMPORTED GROUNDWATER <br />PARAMETER <br />MCL <br />09 <br />WATER <br />PHG <br />erosion of natural deposits <br />9.86 <br />(MCLG) <br />MCL (MCLG) <br />use; leaching from septic tanks and <br />Sites pofSites <br />sewage; erosion of natural deposits <br />2.23 <br />Range Average <br />Range <br />Average <br />Range <br />INORGANIC CHEMICALS <br />(continued) <br />contamination from historic <br />aerospace orother industrial <br />Fluoride Tpm) <br />",s <br />1 <br />0.6 -1.0 <br />0.8 <br />NA <br />(Treatment - related) <br />^otosi' <br />natural deposits; leaching from <br />Hexavalent Chromium <br />10 <br />0.02 <br />NO <br />NO <br />ND -21 <br />(ii <br />plumbing systems; erosion of <br />AL= 15 0.2 <br />ND ND <br />ND 0 84 <br />Nitrate a <br />44 <br />45 <br />NO <br />NO <br />NO, 28.18 <br />(as NOS ppm) <br />Nitrate and Nitrite <br />10 <br />10 <br />ND <br />NO <br />ND -6.37 <br />(as N cam) <br />Perchlorate (ppb)° <br />Selenium (ppb) <br />PARAMETER <br />Copper prim) <br />Lead 1ppb) <br />6 6 ND ND ND -4.00 <br />50 (50) ND ND NR <br />TYPICAL SOURCE <br />OF CONTAMINANT <br />NA <br />Water additive for dental health <br />09 <br />Discharge from steel and pulp mills; <br />PHG <br />erosion of natural deposits <br />9.86 <br />Runoff and leaching from fertilizer <br />MCL (MCLG) <br />use; leaching from septic tanks and <br />Sites pofSites <br />sewage; erosion of natural deposits <br />2.23 <br />Range Average <br />Peron, <br />Above Sampled <br />It usually gets into drinking water <br />as a result of environmental <br />0.03 <br />contamination from historic <br />aerospace orother industrial <br />operations that used or use, store, or <br />dispose of Perchlorate and its salts <br />NR <br />Refineries, mines, and chemical <br />Ali 03 <br />waste discharges; runoff <br />Primary Sfondnm, contmund on naxt page <br />I SANTA ANA WATER QUALITY REPORT <br />EXHIBIT 5 <br />75C -52 <br />10 <br />IMPORTED WATER <br />GROUNDWATER <br />'.. <br />PHG <br />pat <br />TYPICAL SOURCE <br />MCL (MCLG) <br />Sites pofSites <br />OF CONTAMINANT <br />Range Average <br />Peron, <br />Above Sampled <br />the At <br />Internal corrosion of household <br />plumbing systems; erasion of <br />Ali 03 <br />NO NO <br />0.14. 0 84 <br />natural deposits; leaching from <br />wood preservatives <br />Internal corrosion of household <br />plumbing systems; erosion of <br />AL= 15 0.2 <br />ND ND <br />ND 0 84 <br />natural deposits: discharges from <br />industrial manufacturers <br />Primary Sfondnm, contmund on naxt page <br />I SANTA ANA WATER QUALITY REPORT <br />EXHIBIT 5 <br />75C -52 <br />10 <br />