Statutes, codes, and regulations
Alabama Administrative Code
Title 420 - ALABAMA STATE BOARD OF HEALTHChapter 420-3-1 - ONSITE SEWAGE TREATMENT AND DISPOSAL
Tanks, Advanced Treatment, And Pumps
Section 420-3-1-.25 - Advanced Treatment Required

Ala. Admin. Code r. 420-3-1-.25

Download
PDF
Current through Register Vol. 43, No. 1, October 31, 2024
Section 420-3-1-.25 - Advanced Treatment Required
(1) The following systems, sites, and/or conditions shall require advanced treatment:
(a) Any system with a design flow of over 4,000 gpd of sewage.
(b) Any system that is producing high strength sewage of over 1,800 gpd shall treat to secondary effluent standards under a Performance Permit. If the average strength is 3,000 mg/1 Biological Oxygen Demand (BOD) or greater, ADPH may consider treating to primary effluent standards under a Performance Permit if:
1. There are no environmental or health ramifications.
2. The field shall be sized in accordance with 420-3-1-.55 Gravel Field Standard EDF Sizing for Establishments except that the treated BOD loading shall be used.
(c) Sites where depth to ASHES from the natural ground surface is less than 6 inches.
(d) Sites where depth from natural ground surface to hard bedrock is less than 12 inches.
(e) Soils with an estimated or actual percolation rate of less than 5 MPI.
(f) Soils where the estimated or actual percolation rate is greater than 240 MPI.
(g) Sites containing mine spoil at the natural ground surface to a depth of at least 48 inches within the proposed EDF area at the time of the site evaluation.
(h) When a pad or bed is used as described in 420-3-1-.59 Pad and Bed Construction Specifications.
(i) When drip irrigation is used as described in 420-3-1-.62 Drip Irrigation Requirements.

Ala. Admin. Code r. 420-3-1-.25

Filed July 20, 1988. Amended: Filed June 19, 1992. Repealed and New Rule: Filed December 16, 1999; effective January 20, 2000. Repealed and New Rule: October 20, 2005; effective November 24, 2005; operative March 19, 2006.
Adopted by Alabama Administrative Monthly Volume XXXV, Issue No. 04, January 31, 2017, eff. 3/5/2017.
Adopted by Alabama Administrative Monthly Volume XLI, Issue No. 03, December 30, 2022, eff. 2/13/2023.

Previous Rule .36 was renumbered .25 per certification published December 30, 2022; effective February 13, 2023.

Authors: 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.