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Barium 6103 118 ppb 77-170 1000 2000 '6ischarge of ail drilling wastes and from <br /> ppb ppb ppb metal refineries;erosion of natural <br /> II deposits <br /> i <br /> Dibromochloropropane t2/03 40 ppt 0-40 ppt 200 1.7 ppb Banned nematocide that my still be <br /> (E)BCP) plot present in solids due to runoff/leaching <br /> ;'1 from former use on soybeans,cattan, i <br /> vineyards,tomatoes,and tree fruit: - <br /> Cis-1,2.Nchloroethyler 10/03 1.37 ppb 0-3.7 ppb 6 ppb 70 ppb Discharge from industrial chemical <br /> 'factories <br /> Trichloroethylene(TC£) 8/03 ,71 ppb 0-71 ppb 5 ppb A ppb D+schorge from metal degreasing sites <br /> and other factories <br /> i <br /> i <br /> Nitrate 12/03 18.77 7.6-33 45 ppm 45 ppm Runoff and leaching from fertilizer user <br /> PPM :,PH6 leaching from septic tanks,sewage, <br /> erosion of natural deposits <br /> TABLE 5 - DETECTION OF CONTAMINANTS WITH A SECONDARY DRINKING WATER STANDARD <br /> Chemical or Constituent Sample Level Range of MGLPHG Typical Source of Contaminant <br /> (and re rtin units) Date Detected Detections ;1 (MCLG) <br /> NO 5ECONDARY <br /> CONTAMINANT DETECTED <br /> I <br /> TABLE 6 - DETECTION OF UNREGULATED CONTAMINANTS <br /> Chemical or Constituent Sample Level Action I Health.Effects Language <br /> (and re rtln units) Hate Detected Level i <br /> Vanadium* 8/03 44 avg 50 ppb The babies of some pregnant women who drink water contaihing <br /> 28-57 vanadium in excess of the action level may have on increased risk <br /> of developmental effects,based on studies in laboratory animals. <br /> 'Any violation of an MCL or AL is asterisked- Additional information regarding the violation is provided on the next page. <br /> � l I <br /> Water Well Protection;The City of Ripon encourages the abandonment of all non-used residential M <br /> Wells. On all existing City water Wells,the following protection measures are used;5anitary Seals <br /> at a minimum of 150'in depth,Well head is set up 2'above ground level,and daily visual inspections ; f <br /> are made. During construction of new Wells,we ensure that there are no sewer lines within 100'. <br /> Water Treatments Granulate Activated Carbon(GAC) is used an Well#9 to remove TCE,Cis 1, <br /> 2-DCE,and DBCP from the raw water before it enters into the water distribution system and <br /> delivered to our residents.These Wells and its treatment.process are monitored on a monthly basis 1 <br /> to ensure the quality of the water. <br /> } <br /> ,z <br />