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Orange County Santa Ana Region <br />Spill Reporting Guidelines <br />Type of Spill <br />Notification <br />Monitoring <br />Reporting <br />Agency to Notify <br />Category 1 - <br />Within two (2) hours <br />Spill -specific monitoring <br />-Draft Report within 3 business days of <br />-COES <br />Spills to Surface <br />of knowledge of a <br />knowledge of spill <br />Waters <br />Category 1 spill of <br />Water quality sampling <br />-OCHCA <br />1,000 gallons or <br />of receiving water within <br />-Certified Report within 15 calendar days of <br />greater, discharging <br />18 hours of initial <br />spill end date <br />-OC Public Works <br />or threatening to <br />knowledge of spill of <br />discharge to surface <br />50,000 gallons or <br />-Technical Report: certify within 45 calendar <br />-City <br />waters: <br />greater to surface <br />days after end date for any spill 50,000 gal or <br />waters <br />greater discharging to surface waters <br />-CIWQS Sanitary <br />Notify COES and <br />Sewer System <br />obtain a Notification <br />-Amended Report within 90 calendar days <br />Database <br />Control Number <br />after spill end date <br />Category 2 - <br />As soon as practical <br />Spill -specific monitoring <br />-Draft Report within 3 business days of <br />-OCHCA <br />Spills of 1,000 <br />knowledge of spill <br />Gallons or Greater <br />-CIWQS Sanitary <br />That Do Not <br />-Certified Report within 15 calendar days of <br />Sewer System <br />Discharge to <br />spill end date <br />Database <br />Surface Waters <br />-Amended Report within 90 calendar days <br />after spill end date <br />Category 3 - <br />As soon as practical <br />Spill -specific monitoring <br />-Certified Monthly Report within 30 calendar <br />-OCHCA <br />Spills of 50 Gallons <br />days of the end of the month in which the <br />or Greater and Less <br />spills occur <br />-CIWQS Sanitary <br />than 1,000 Gallons <br />Sewer System <br />That Do Not <br />-Amended Report within 90 calendar days <br />Database <br />Discharge to <br />after the Certified Spill Report due date <br />Surface Waters <br />Category 4 - <br />As soon as practical <br />Spill -specific monitoring <br />-Certified "Category 4 Spills" Statement with <br />-OCHCA <br />Spills of Less than <br />an estimate of number and total volume of all <br />50 Gallons That Do <br />Category 4 spills per month within 30 <br />-CIWQS Sanitary <br />Not Discharge to <br />calendar days of the end of the month in <br />Sewer System <br />Surface Waters <br />which the spills occurred <br />Database <br />-Certified Report of all Category 4 spills by <br />February 1 st after the end of the calendar <br />year in which the spills occur. <br />Lateral Spill - <br />As soon as practical <br />Spill -specific monitoring <br />-Certified "Non -Category 1 Lateral Spills" <br />-OCHA <br />Spills from Privately <br />Statement within 30 calendar days of the end <br />Owned and/or <br />of the month in which the spills occurred <br />-Public Works <br />Operated Laterals <br />That Do Not <br />-Certified Report of all private Lateral spills <br />-CIWQS Sanitary <br />Discharge to <br />by February 1 st after the end of the calendar <br />Sewer System <br />Surface Waters <br />year in which the spills occur. <br />Database <br />No Spills <br />N/A <br />N/A <br />-Certified "No Spill" Statement within 30 <br />-CIWQS Sanitary <br />calendar days of the end of the month <br />Sewer System <br />Database <br />REVISION 2.0 (4/23) 22 <br />