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9. <br />Chromium - shall not exceed 0.50 mg/1 hexavalent <br />C. Collection System Infiltration <br />or 1.0 mg/1 total chromium. <br />L iltraaon in the County Collection System shall be <br />10. <br />Phenolic type compounds calculated or reported as <br />limited •:o an amount so that the average per capita <br />phenol --shall not exceed 0.001 mg/1. <br />• <br />dischargo into the plant on any one day shall not ex - <br />11. <br />Lead - shall not exceed 0.05 mg/1.. <br />ceed 150 gallons. For purposes of obtaining per capita <br />flow, thir five day BOD per capita is defined as 0.17 <br />12. <br />Iran - shall not exceed 0.30 mg/1. <br />pounds pur day. <br />13. <br />Arsenic - shall not exceed 0.05 mg/1. <br />• 14. <br />Chlorides - shall not exceed 600 mg/1. <br />r <br />15. <br />Sand - shall not exceed 0.01 mg/1 at any time. <br />B. <br />Prohibited Discharges <br />The following discharges into any collection system <br />shall be prohibited: <br />1. <br />Any indc•':rial waster that exceeds the requirements <br />of Paragraph A or as defined by the Environmental <br />Protection Agency, without written approval of the <br />City's Director of Utilities. <br />2. <br />Storm water, yard drains, roof drains or catch basins. <br />3. <br />The discharge of coolant water of air conditioning <br />units. <br />4. <br />Machinery and motor vehicle lubricants. <br />5. <br />Gasoline, benzene, naptha, mineral spirits or other <br />flammable or explosive liquid, solid or gas. <br />6. <br />Any ashes, sand, mud. metal, glass, rags or any solid <br />, <br />or viscous substance capable of causing obstruction <br />t <br />to the flow in sewers or interference with the proper <br />operation of the treatment plant. <br />-12- ' <br />-11- <br />. <br />