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Reissued Waste Discharge Requirements General Order R5-2013-0122 19 Existing Milk Cow Dairies construction quality assurance testing and observations; (2) certification that the pond was constructed as designed; and (3) as-built diagrams. D. PRODUCTION AREA SPECIFICATIONS The Production area includes, but is not limited to, barns, milk houses, corrals, milk parlors, manure and feed storage areas, process water conveyances and any other area of the dairy facility that is not the land application area or the ponds. 1. All dirt or unpaved corrals shall be graded to promote drainage. Cow washing areas shall be paved (concrete or equivalent) and sloped to a drain. Water troughs, permanent feed racks, and mangers shall have paved access, and water troughs shall have a drain to carry water away from the corrals. (Cal Code Regs., title 3, § 646.1.) 2. All milk rooms and milk barns shall be floored with concrete or other low permeability suitable material and be properly drained. (Cal Code Regs., title 3, §§ 648(c) & 649(a).) All drainage that comes in contact with waste (as defined in Finding 13) shall be directed to the wastewater retention ponds. 3. All drainage that has contacted feed is a waste in accordance with Finding 13 and shall be directed to the wastewater retention ponds. 4. All roofs, buildings, and non-manured areas located in the production area of the existing milk cow dairy shall be constructed or otherwise designed so that clean rainwater is diverted away from manured areas and waste containment facilities, unless such drainage is fully contained in the wastewater retention ponds. (Title 27, § 22562(b).) 5. Roof drainage from barns, milk houses, or shelters shall not drain into the corrals unless the corrals are properly graded and drained. (Cal Code Regs., title 3, § 661.) 6. The animal confinement area (including corrals), and manure and feed storage areas shall be designed and maintained to convey all water that has contacted animal wastes or feed to the wastewater retention ponds and to minimize standing water as of 72 hours after the last rainfall and the infiltration of water into the underlying soils. 7. For Dischargers conducting individual groundwater monitoring, if the monitoring data in the Summary Report indicate that the Dischargers Production Area may have discharges that violate Groundwater Limitation F.1 of this Order or that such discharges may cause degradation to high quality waters, the Dischargers are required to implement management practices/activities (BPTC for high quality waters or best efforts for waters that