CORRESPONDENCE_1994-1999 - Laserfiche WebLink

Home Browse Search

WASTE DISCHARGE REQUIREMENTS -15- FORWARD INC.,FORWARD LANDFILL SAN JOAQUIN COUNTY 19. New landfill units and lateral expansions shall not be located in wetlands unless the discharger has successfully completed, and the Board has approved, all demonstrations required for such discharge under 40 CFR 258.12(a). 20. Dewatered sewage or water treatment sludge may be accepted for disposal if the sludge contains at least 20 percent solids (primary sludge) or 15 percent solids (secondary sludge), is mixed with refuse at a minimum solids-to-liquid ratio of 5:1 by weight and shall not exceed the initial moisture holding capacity of the solid waste. 21. Dewatered sewage or water treatment sludges shall only be landfilled in units equipped with composite liners. 22. The sump pump shall have a minimum design capacity equivalent to 120% of the leachate flow rate from a landfill unit LCRS. If leachate flow rates exceed the capacity of the pump, additional pumps may be added or the Discharger shall cease the discharge of sludges and other high-moisture wastes to the landfill unit. The Discharger shall notify the Board in writing within seven days and work with the Board towards an acceptable solution. Notification shall include a timetable for corrective action necessary to reduce leachate production. SURFACE IMPOUNDMENT SPECIFICATIONS 23. New containment systems constructed for surface impoundments (WMUs F) shall meet Class H standards. The use of a GCL and a synthetic liner_as a composite system is an approved Engineered Alternative to the prescriptive outer clay liner component in the double liner option. 24. Design and construction plans and specifications shall be submitted to the Board for approval before construction of any surface impoundment. After surface impoundment construction, a construction quality assurance report shall be submitted to the Board and approved by Board staff prior to operation of the surface impoundment. 25. The sump pump shall have a minimum design capacity equivalent to 120% of the leachate flow rate from the surface impoundment LCRS. If leachate flow rates exceed the capacity of the pump, additional pumps may be added or the Discharger shall cease the discharge of waste, excluding leachate, to the impoundment. The Discharger shall notify the Board in writing within seven days and work with the Board towards an acceptable solution. Notification shall include a timetable for remedial action to repair the upper liner of the impoundment or other action necessary to reduce leachate production.