Utah Administrative Code
Topic - Environmental Quality
Title R315 - Waste Management and Radiation Control, Waste Management
Rule R315-319 - Coal Combustion Residuals Requirements
Section R315-319-70 - Design Criteria for New CCR Landfills and Any Lateral Expansion of a CCR Landfill
Current through Bulletin 2024-06, March 15, 2024
(a)
(b) A composite liner shall consist of two components; the upper component consisting of, at a minimum, a 30-mil geomembrane liner (GM), and the lower component consisting of at least a two-foot layer of compacted soil with a hydraulic conductivity of no more than 1 x 10-7 centimeters per second (cm/sec). GM components consisting of high density polyethylene (HDPE) shall be at least 60-mil thick. The GM or upper liner component shall be installed in direct and uniform contact with the compacted soil or lower liner component. The composite liner shall be:
(c) If the owner or operator elects to install an alternative composite liner, all of the following requirements shall be met:
Equation 1
Q/A=q=k(h/t+1)
Where,
Q = flow rate, cubic centimeters/second;
A = surface area of the liner, squared centimeters;
q = flow rate per unit area, cubic centimeters/second/squared centimeter;
k = hydraulic conductivity of the liner, centimeters/second;
h = hydraulic head above the liner, centimeters; and
t = thickness of the liner, centimeters.
(d) The leachate collection and removal system shall be designed, constructed, operated, and maintained to collect and remove leachate from the landfill during the active life and post-closure care period. The leachate collection and removal system shall be:
(e) Prior to construction of the CCR landfill or any lateral expansion of a CCR landfill, the owner or operator shall obtain a certification from a qualified professional engineer that the design of the composite liner; or, if applicable, alternative composite liner; and the leachate collection and removal system meets the requirements of Section R315-319-70.
(f) Upon completion of construction of the CCR landfill or any lateral expansion of a CCR landfill, the owner or operator shall obtain a certification from a qualified professional engineer that the composite liner; or, if applicable, alternative composite liner; and the leachate collection and removal system has been constructed in accordance with the requirements of Section R315-319-70.
(g) The owner or operator of the CCR unit shall comply with the recordkeeping requirements specified in Subsection R315-319-105(f), the notification requirements specified in Subsection R315-319-106(f), and the Internet requirements specified in Subsection R315-319-107(f).