Okla. Admin. Code § 252:616-7-7

Current through Vol. 41, No. 19, June 17, 2024

Section 252:616-7-7 - Concrete liners

(a)Suitability. A liner system constructed with a soil subbase, a specially prepared subgrade, and reinforced concrete is a highly protective liner system and may be used for Class I, II, III, and V wastewater.

(b)Pre-construction requirements. Before construction, classify and test all liner material and submit the following with the industrial wastewater treatment permit application:

(1) test the concrete liner material for both chemical and physical properties that show the concrete is compatible with the wastewater by using actual or synthetic wastewater; and

(2) determine an appropriate water-cement ratio based on maximum strength requirements and operational conditions.

(c)Construction requirements. Construct a concrete liner as follows:

(1) prepare the subgrade to prevent differential settling under maximum operational conditions;

(2) mix the concrete with water free of oil, grease, acids and alkalis, and under 2000 ppm turbidity with minimal sulfates;

(3) pour concrete liners monolithically, at least six inches thick and reinforced for impoundment stability and to prevent cracking or fracturing during maximum operating conditions; and

(4) construct concrete liners with 3000 pounds per square inch compressive strength concrete as determined after 28 days curing time by standard concrete compression test.

Okla. Admin. Code § 252:616-7-7

Added at 17 Ok Reg 1925, eff 6-12-00