COMPLIANCE INFO_2013-2014 - Laserfiche WebLink

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contamination by weight is mixed solid waste. After the initial inspection, any remaining, smaller material is picked out by hand. For these incidental materials such as metal, plastic or tucks, or treated wood, the materials separated and placed in a covered roll -off container or similar containers. Any non-compostable material will be separated into labeled roll off containers or dumpsters differentiated between and labeled as regular trash, treated wood waste, other recyclables (plastic, metal, etc) and hazardous waste. This material will be taken to the Forward Landfill in San Joaquin County on a weekly basis, or more often if required. If pre-processed material (i.e., ground) is delivered to the facility, it will be directly off-loaded to a designated location and placed into windrows for processing within 72 hours. Unloading and Grinding After the initial receiving process, the trucks are directed to the off-loading area and divided by size and type of material. Any loads containing food scraps are immediately covered by green material, or other high carbon material such as overs, wood chips or curing compost, to remove the possibility of odor, vectors or birds, before incorporation into the composting process. Grinding will occur to the west of a 14 foot berm/wall located in this area for noise management purposes. The material is then immediately ground, processed and formed into rows for composting. No material will remain in this staging area for more than 72hours, and is usually ground and incorporated within the same day. Composting The facility uses a thermophillic, aerated windrow composting process. This process allows materials to be blended to provide aeration and proper moisture content. The materials form windrows which will be approximately 7 feet high, 18 feet wide and 250-450 feet long. Windrow composting is efficient; it produces high quality product with relatively low technological input, and achieves high temperatures insuring that pathogen reduction, seed inactivation, vector attraction reduction, and odor control are accomplished. Once the thermophillic environment is established, the process is maintained by monitoring the temperature, moisture, and oxygen in the windrows. The moisture and temperature monitoring program are developed and maintained by the turning and water schedule of the windrows. This process is key to creating and maintaining the aerobic thermophillic environment essential for microbial respiration requiring high temperatures in the presence of oxygen. It is important in that the micro-organisms that thrive at these temperatures contribute to the composting process Compost pile internal temperatures are monitored by readings taken with a long stemmed windrow thermometer at various depths along the formed windrows. The readings will begin two days after the formation of a new windrow. Initially, they are made daily and taken at a minimum of 100 feet along the windrow at various depths. Once the minimum windrow temperature reaches 131 degrees F, the five turnings during the required 15 day period are taken to complete pathogen reduction requirements. Once requirements are met, daily temperature monitoring is conducted. The watering regimen, also dictated by the air district, 4