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, t Harvest-Lathrop Composting Facility -4- 7 February 2018 San Joaquin County The Facility will operate year round and uses a thermophilic, aerated windrow composting process. The Facility will recycle green waste, food waste and agricultural waste, obtained from urban residential sources and local agricultural facilities. After receiving, all incoming materials will be screened manually and stockpiled in an area reserved for grinding (Receiving Area) and then and placed into windrows for processing. All compostable material entering the site will be ground and incorporated within 36 hours of receipt. The windrows will be approximately 7 feet high, 18 feet wide, 250 feet long and situated 8 feet apart. The material will remain in the windrows until it is cured. This stage of creating mature compost lasts approximately 3 months. Water will be pumped from the wells and applied to piles using either sprinklers, which are placed atop the windrows and moved when the material covered by the radius becomes saturated, or a water truck that drives between the windrows and applies water directly to the piles vie high pressure injection nozzles. Watering will be done primarily during the 15 days of pathogen reduction. During this time, the piles will be turned five times by a windrow compost turner and watered before they are turned. The piles are monitored for temperature and moisture and turned to ensure they meet pathogen, vector attraction, and VOC reduction requirements. At the end of the curing phase, the material will be run through a trommel screen and material will be separated into fines and overs. There are no additives used in the composting process. The only amendments that will be used on site are new Gypsum (up to 25%) and lime mixed into some finished product on a small batch-by-batch basis. The fines will be sold as finished compost products. The overs will be recycled back into the compost process. The Process Flow diagram (Attachment C) shows movement of material from received to final product. The compost generated will be marketed to the landscaping and agricultural communities. Any wood waste coming into the Facility will be separated, ground, stored and taken to a facility to be used as energy. As outlined, in the Discharger's Solid Waste Facility Permit (39-AA- 0051), this activity is considered a small volume CDI debris processing. The Facility will not take in more than 25 tons per day of wood waste. Stormwater that forms leachate (wastewater) at the Facility will be directed using minimum 1% drainage slope on the working surfaces (operational areas) to drainage ditches which convey the wastewater to detention pond 1 (Pond 1) or detention pond 2 (Pond 2). The Facility will be designed to rely on gravity flow from the operational areas to Pond 1 and Pond 2. Wastewater will be periodically removed from Pond 1 and Pond 2 for moisture conditioning compost windrows and for dust control. The results of the Discharger's water balance analysis for wastewater storage capacity requirements in accordance with the General Order are shown below: Ponds 1 and 2 Wettest Season, Required Design Available Wastewater Storm Reserve Remaining Capacity' Storage in Ponds2 Capacity' capacity' Month (Gallons) (Gallons) (Gallons) (Gallons) October 3,528,189 - 1,196,369 2,331,820 November 3,528,189 278,035 1,196,369 2,053,785 December 3,528,189 909,216 1,196,369 1,422,604 January 3,528,189 2,037,871 1,196,369 293,949 CAtl'��E®