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WASTE DISCHARGE REQUIREMAS ORDER NO. • 15 CITY OF LATHROP AND METROPOLITAN LIFE INSURANCE COMPANY CROSSROADS TREATMENT PLANT NO. 1,SAN JOAQUIN COUNTY D. Land Disposal Specifications 1. Recycled wastewater used for irrigation shall meet the criteria contained in Title 22,Division 4, CCR(Section 60301 et seq.). 2. Public contact with wastewater shall be controlled through use of fences, cautionary signs, and/or other appropriate means. Perimeter warning signs indicating that recycled water is in use shall be posted at least every 500 feet along the property boundary and at each access road entrance to the properties. The contents of these signs shall be as described in Section 60310 of California Code of Regulations, Title 22. Each sign shall be in English and Spanish languages. 3. Recycled water controllers, valves, and similar appurtenances shall be affixed with recycled water warning signs, and shall be equipped with removable handles or locking mechanisms to prevent public access or tampering. Quick couplers and sprinkler heads, if used, shall be of a type, or secured in a manner, that permits operation only by authorized personnel. Hose bibbs that the public could use shall be eliminated. 4. Any connection between the recycled water conveyance system and any potable water conveyance system, groundwater supply well, or surface water supply source for the purpose of supplementing recycled water shall be equipped with an appropriate backflow prevention device. 5. Direct or windblown spray shall be confined to the designated disposal area and prevented from contacting outdoor eating areas, drinking water facilities,homes, or surface watercourses. 6. Spray irrigation with recycled water is prohibited when wind velocities exceed 30 mph. 7. No irrigation with, or impoundment of, undisinfected secondary recycled water shall take place within 150 feet of any domestic water supply as required by Title 22 Section 60310(d). i 8. Recycled water shall be used in compliance with CCR Title 22, Article 3, "Uses of Recycled Water." Recycled water shall not be used for irrigation food of crops for human consumption, nor shall it be used in recreational impoundments. 9. The perimeter of the land disposal areas shall be graded to control runoff and prevent ponding along public roads or other public areas. 10. Storm water runoff from land application areas shall be retained within the designated effluent recycling areas. 11. Irrigation with recycled effluent shall not be performed within 24 hours before, during, or within 24 hours after any precipitation event, nor shall it be performed when the ground is saturated.