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Table 2.4 <br /> Minimum Temperature and Process Time <br /> Requirements for Pathogen Reduction <br /> Minimum Temperature Minimum Duration <br /> Facility (CO) (Days) <br /> Enclosed or within-vessel 55 3 <br /> Windrow' 55 15 <br /> Aerated Static Pile2 155 3 <br /> 'Must maintain aerobic conditions and be turned at least five times. <br /> 2A 6- to 12-inch cover is required. <br /> Daily temperature measurements shall be measured for pathogen reduction as follows: <br /> • Windrow composting processes and agitated bays shall be monitored twelve <br /> (12) inches below the pile surface <br /> • Aerated static pile composting processes shall be monitored twelve (12) to eighteen <br /> (18) inches below the insulation cover. <br /> The temperature reading will be taken per either 150 feet of Windrow, or fraction thereof, <br /> or for every 200 cubic yards of active compost. <br /> Sewage Sludge. If sewage sludge is composted, monitoring for metals, pathogen density, <br /> and active compost temperatures will be performed at the frequency listed in Table 2.5. <br /> Table 2.5 <br /> Frequency of Compost Product Monitoring <br /> Amount of Sewage Sludge <br /> Compost Feedstock (metric <br /> tons per 365-day period) Frequency <br /> Greater than zero but fewer than 290 Annually <br /> Equal to or greater than 290 but fewer than 1,500 Quarterly <br /> Equal to or greater than 1,500 but fewer than 15,000 Bimonthly <br /> Equal to or greater than 15,000 Monthly <br /> To meet the requirements of Sections 17868.2 and 17868.3, at least one composite sample <br /> Ishall be analyzed for every 5,000 cubic yards of compost produced. <br /> aea1OM9N4.wp5/44 <br /> 9/28/94 44 <br />