§ 19B-8. Liner.

(a)

No person shall design, construct, operate, use, or maintain an engineered containment structure for impoundment of recycled water unless it has a liner, approved by the LEA and the Central Valley Regional Water Quality Control Board, that meets the following requirements:

(1)

The Recycled Water Pond shall have either a synthetic or a clay liner meeting the following criteria:

(i)

Synthetic Liner Criteria:

(A)

The liner shall be constructed of high density polyethylene (HDPE);

(B)

The liner shall have a minimum thickness of sixty (60) mil; and

(C)

The liner shall be ultraviolet light stabilized;

(ii)

Clay Liner Criteria:

(A)

The liner shall be constructed with a thickness of twelve (12) inches;

(B)

The liner shall have a permeability not to exceed 1 x 10 ^-6 centimeters per second; and

(C)

The liner shall be designed and maintained so as to remain full, subject to the Freeboard requirement herein, throughout the year;

(2)

The liner shall be installed over a foundation layer designed and constructed in such a manner as to provide a stable base;

(3)

The liner shall be installed under the supervision of a licensed professional geotechnical engineer and certified by that professional that the construction has been completed in substantial conformance with the design; and

(4)

The liner shall have an approved quality assurance/quality control plan and a Construction Quality Assurance Report.

(b)

Additional containment may be required by the Central Valley Regional Water Quality Control Board based on an assessment of the quality of wastewater effluent and risk to water quality.

(Ord. No. 4078, § 1, 4-22-14)