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CLASS I <br />CLASS II <br />SYSTEM STATISTICS BY CLASS <br />- INDIVIDUAL CONVENTIONAL SYSTEMS <br />— APPROXIMATELY 14,000 IN ORANGE COUNTY <br />-- 1 1 T LESS THAN 5 YEARS OLD (1 540 ) <br />— 13% 5 -10 YEARS OLD (1820 ) <br />— 7657o OLDER THAN 10 YEARS ( 10,640) <br />1 1 % FAILING — BASED ON OCHD FILE INFORMATION AND <br />1981 SEPTAGE STUDY (1 540 ) <br />INDIVIDUAL PUMP SYSTEMS <br />— APPROXIMATELY 1, 5 50 IN COUNTY (5 50 LPP SYSTEMS, <br />1,000 PUMP CONVENTIONAL) <br />-- <br />APPROXIMATELY 60% LESS THAN 5 YEARS OLD (9 3 0 ) <br />— APPROXIMATELY 35% 5 -10 YEARS OLD ( 542 ) <br />APPROXIMATELY 5� OLDER THAN 10 YEARS (76) <br />— 24� OF LPP SYSTEMS FAILING (132) — 75% IN SOME <br />SORT OF MECHANICAL NON — COMPLIANCE ( 413) — BASED <br />ON OCHD FILE INFORMATION <br />— NO FAILURE ESTIMATES ARE AVAILABLE FOR PUMP <br />CONVENTIONAL DUE TO LACK OF RE— INSPECTIONS <br />CLASS III - INDIVIDUAL SPRAY IRRIGATION AND <br />DISCHARGING SYSTEMS <br />— 37 IN ORANGE COUNTY (1 5 SPRAY SYSTEMS AND 22 <br />SUBSURFACE SAND FILTERS) <br />— ALL 15 SPRAY SYSTEMS ARE LESS THAN 10 YEARS OLD <br />— MOST SAND FILTERS ARE OLDER THAN 10 YEARS <br />PERCENT FAILING IS NOT KNOWN BECAUSE OF LACK OF <br />INSPECTIONS. SYSTEMS ARE REPERMITTED AT 5 YEAR <br />INTERVALS AND ARE GENERALLY INSPECTED ONLY WHEN <br />COMPLAINTS ARE RECEIVED CONCERNING THEIR <br />OPERATION <br />