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0 • -DRAFT - OPERATING DRAFT- OPERATING PROCEDURES TO MINIMIZE ODOR (5) a description of operating and design procedures for minimizing odor, including aeration, moisture management, feedstock quality, drainage controls, pad maintenance, wastewater pond controls, storage practices (e.g., storage time and pile geometry), contingency plans (i.e., equipment, water, power, and personnel) weather impacts, biofiltration, and tarping. Harvest operates its compost facility to manage all odor -producing areas of the facility so as to minimize the development of conditions that could lead to off-site odor problems. Major processing steps of each operation are described below: Feedstock Receiving Area. Some incoming feedstocks can generate odors if they are stored for excessive periods of time prior to being collected and transported to the site (green material, food scraps). Feedstocks left unprocessed (green material, food scraps) at the site can also generate significant odors, particularly during the rainy season. In order to minimize these potential odors, The Facility will process material regularly and within regulatory limits (as described in the RCSI). Most feedstock requiring processing (predominantly the wood and green material) will be processed within 48 hours of receipt. Food scraps will be mixed, and placed in a windrow within 24 hours of receipt. Aisles between Windrows. Windrow aisles can be sources of odor if raw, uncomposted material is left for excessive amounts of time without being exposed to the high temperatures of composting. The facility will practice good housekeeping methods which include regular patrolling of windrow aisles to clean any spilled materials. Windrow aisles can also be a source of odor if storm water or process water is allowed to pond in potholes or other pad depressions. Any standing water that is discovered will be absorbed with chipped material (or other absorbent) and the depression will be filled with pad material (typically dirt or clay). Windrows. Odors emanating from windrows typically indicate problems in the initial mixing, turning frequency, pile porosity and/or moisture content of the pile. Harvest strives to manage its windrows with appropriate carbon to nitrogen level, assure adequate initial mixing, and maintain adequate moisture within the piles. Piles will be turned regularly on a prescribed schedule. Any odors detected from the windrows will be corrected using the techniques described in Table 1 or Table 2. Curing piles. Curing piles have the potential to create odors if material that is not stable is moved to curing too soon, or if the pile is made too high (above 12 feet). Harvest plans to only cure compost that has undergone thorough decomposition and is ready for curing. 11 Integrated Waste Management Consulting, LLC Odor Impact Minimization Plan November 2016 Harvest — Lathrop Composting Facility ; j- k