SU0006921 - Laserfiche WebLink

Home Browse Search

Project Description— Report of Composting Site Information Tracy Material Recovery Facility and Transfer Station 30703 S. MacArthur Drive, Tracy, California 95377 material at a temperature of 55 degrees Celsius (131 degrees Fahrenheit), or higher, for a period of 15 days, or longer, which meets regulatory pathogen reduction requirements (14 CCR §17868.3). There will be a minimum of five turnings of the CCO windrows during a 15-day period during which readings such as temperature and oxygen content are monitored and documented. When the desired level of decomposition has been achieved, the CCO compost materials will be moved to the curing areas for a six-week period or left in place until shipment from the site • At the start of all CCO composting cycles, temperatures will be taken and recorded daily to confirm satisfactory results. Temperature measurements will be taken at 1.5 to 2 feet below surface for Elongated Windrow Method. This will be performed to allow for accurate temperature measurements deep within the windrow. The minimum frequency for temperature readings for all composting methods will be based on a 200 cubic yard volume per reading. Procedures for taking temperatures I • Temperature probes 2 feet long, with a dial on one end and a thermocouple on the other will be used for taking temperatures. j The probe will be inserted into the windrow at depths at which the temperatures will be taken as discussed above. • The same person taking the temperatures using the same technique each time will be utilized whenever possible to aid in ; eliminating variables. • Points for probe insertion shall be chosen to produce the most representative readings of internal temperatures. E l Sampling Requirements " Project compost product will be sampled at a frequency of one composite of twelve samples for each 5,000 cubic yards consistent with 14 CCR §17868.1. Samples will be analyzed for metals consistent with 14 CCR §17868.2 and pathogens consistent with 14 CCR §17858.3. The Site Manager shall maintain records of sample collection and analytical results. I The sample will also be tested for compost quality for the C:N ratio, NPK, and the amount of inert material that may be present in the compost. _Disposition of Material Exceeding Established Limits Tested material exceeding established limits for pathogens or metals shall be retested. If results show incomplete pathogen destruction, the material will be composted for another cycle of at least 15 days. If, after this period, failing results are found, the material will be legally disposed offsite. M r Tested material exceeding established limits for metals should be transported to an ;. appropriate waste disposal facility in accordance with all-applicable laws and regulations. 36 Edgar&Associates,Inc. Tracy Compost Fac ProjDesc121907 I _ - t