Louisiana Administrative Code › Title 33 - ENVIRONMENTAL QUALITY › Part V - Hazardous Wastes and Hazardous Materials › Subpart 1 - Department of Environmental Quality-Hazardous Waste › Chapter 29 - Surface Impoundments › Section V-2903 - Design and Operating Requirements

Current through Register Vol. 50, No. 6, June 20, 2024
COMMENT: The permit applicant must submit detailed plans
					 and specifications accompanied by an engineering report that must collectively
					 include the information itemized and address the following in addition to the
					 design and operating requirements:
(1)
				  a description of the proposed maintenance and repair procedures;
(2) a description of the operating procedures
				  that will ensure compliance with this Section; and
(3) a certification by a qualified engineer
				  that states that the facilities comply with the applicable design requirements
				  in this Section. The owner or operator of a new facility must submit a
				  statement by a qualified engineer that he will provide such a certification
				  upon completion of construction in accordance with the plans and
				  specifications.
A. Any surface impoundment
				  that is not covered by LAC 33:V.2903.I must have a liner for all portions of
				  the impoundment (except for the portion of the surface impoundment in operation
				  prior to date of issuance of the hazardous waste permit) and must have a liner
				  designed, constructed, and installed to prevent any migration of wastes out of
				  the impoundment to the adjacent subsurface soil or groundwater or surface water
				  at any time during the active life (including the closure period) of the
				  impoundment. The liner, at a minimum, must consist of a synthetic liner laid on
				  top of a permanent barrier at the bottom and along the sides of the surface
				  impoundment that will cover all surrounding earth likely to be in contact with
				  the waste or leachate. The liner may be constructed of materials that may allow
				  wastes to migrate into the liner (but not into the adjacent subsurface soil or
				  groundwater or surface water) during the active life of the facility, provided
				  that the impoundment is closed in accordance with LAC 33:V.2911.A. For
				  impoundments that will be closed in accordance with LAC 33:V.2911.C.1, the
				  liner must be constructed of materials that can prevent wastes from migrating
				  into the liner during the active life of the facility. The liner must be:
1. constructed of materials that have
				  appropriate chemical properties and sufficient strength and thickness to
				  prevent failure due to pressure gradients (including static head and external
				  hydrogeologic forces), physical contact with the waste or leachate to which
				  they are exposed, climatic conditions, the stress of installation, and the
				  stress of daily operation;
2.
				  placed upon a foundation or base capable of providing support to the liner and
				  resistance to pressure gradients above and below the liner to prevent failure
				  of the liner due to settlement, compression, or uplift;
3. the permanent barrier shall be 3 feet of
				  clay with a permeability of 1 x 10-7 cm/sec or less
				  and so designed and operated as to prevent endangering any freshwater aquifer
				  by the migration of contaminants from the facility, or an equivalent system
				  acceptable to the administrative authority; and
4. the synthetic liner shall be resistant to
				  action of elements and the planned contents of the impoundment or the basin for
				  a period of time not less than the estimated life of the operation;
5. the synthetic liner must be installed to
				  cover all surrounding earth likely to be in contact with the waste or leachate.