Pumping Chambers: Elevated Sand Mound

Pumping Chambers: Elevated Sand Mound. 1. The pumping chamber shall have a minimum capacity of 750 gallons or twice the daily flow, whichever is the largest. 2. The pumping chamber shall be equipped with an audible and/or visual high-water alarm. 3. The high-water alarm must be set to allow a reserve capacity of 50% in the chamber when activated. 4. The pumping chamber shall have a grade level access large enough to allow servicing and/or removal of the largest component in the chamber. Access ports shall be protected against unauthorized entrance or removal. 5. The pumping chamber shall be vented through the grade level access or by means of a separate vent. In either case, the vent shall be equal to or greater than two times the diameter of the inlet port of the pump. 6. The pumping chamber shall be made of material resistant to the corrosive effects of wastewater and designed to withstand the lateral and bearing loads to which it is subjected. 7. All openings shall be sealed with a mastic, butyl rubber, or other pliable sealant that is waterproof, corrosion resistant and approved for use in contact with wastewater, in a manner to prevent the entrance of surface and groundwater.