1. (1) EDFs requiring more than 1,400 linear feet of EDF pipe, as determined by the Gravel Field Standard, shall be divided into separate and equal EDFs containing less than or equal to 1,000 linear feet of EDF trench in each field and shall comply with the following requirements:

   1. (a) Each EDF shall be dosed a minimum of six times a day. If the effluent is treated to secondary effluent standards or better, dosing shall not be required.
   2. (b) Each dose shall not be greater than·70 percent of the volume of the perforated pipe or other disposal product of the EDF into which the pumping tank is to discharge.
   3. (c) Dosing shall be accomplished through the use of effluent pumps from a properly sized and designed dosing tank.
   4. (d) Effluent pumps shall comply with the requirements of 420-3-1-.27 OSS/EDS Requiring Pumping of Effluent.
2. (2) The use of LPP below the natural ground surface may be used as a means of equalizing the distribution of effluent over the EDF and shall require engineer design, using a published manual. The minimum size of the EDF shall be based on Table 14.

Author: Thad Pittman, Matthew Conner, Ken Stephens, Bob Bright

Statutory Authority: Code of Ala. 1975, §§22-2-2(4); 22-2-2(6); 22-10-1, et seq.; 22-26-1 et seq.

Editor’s Note: Previous Rule .92 was renumbered .63 per certification published December 30, 2022; effective February 13, 2023.

History: New Rule: Filed October 20, 2005; effective November 24, 2005; operative March 19, 2006. Repealed and New Rule: Filed January 19, 2017; effective March 5, 2017. Repealed and New Rule: Published December 30, 2022; effective February 13, 2023.