Okla. Admin. Code § 252:641-12-7

Current through Vol. 42, No. 7, December 16, 2024

Section 252:641-12-7 - Spray irrigation fields

(a)Location. All spray irrigation fields shall:

(1) be preceded by an aerobic treatment unit;

(2) be located in the identified dispersal site, when a soil profile test is used to size the irrigation field;

(3) utilize at least two sprinkler heads to disperse the treated effluent; and

(4) be vegetated and landscaped, and/or terraced to prevent runoff.

(b)Sizing. The spray irrigation field shall be sized according to Appendix H, Figures 14-19. When calculating the overall area of the spray irrigation field, areas of overlap may only be counted once.

(c)Sprinklers. The sprinklers shall be designed to:

(1) provide uniform distribution of treated effluent over the entire spray irrigation field without misting; and

(2) have a trajectory of no more than fifteen-degrees (15°) to keep the spray stream low to the ground surface.

(d)Spray irrigation. The spray irrigation shall be:

(1) adjusted and maintained at a rate to prevent runoff; and

(2) controlled by a timing device to take place daily between 1:00 a.m. and 6:00 a.m.

Okla. Admin. Code § 252:641-12-7

Added at 25 Ok Reg 2318, eff 7-11-08

Amended by Oklahoma Register, Volume 37, Issue 24, September 1, 2020, eff. 9/15/2020

Amended by Oklahoma Register, Volume 38, Issue 10, February 1, 2021, eff. 1/4/2021

Amended by Oklahoma Register, Volume 38, Issue 24, September 1, 2021, eff. 9/15/2021