Virginia Administrative Code › Title 9 - ENVIRONMENT › Agency 20 - VIRGINIA WASTE MANAGEMENT BOARD › Chapter 85 - COAL COMBUSTION BYPRODUCT REGULATIONS › Part III - Management Standards › Article 2 - Design and Construction › Section 9VAC20-85-80 - Design and construction

Current through Register Vol. 40, No. 24, July 15, 2024
This section prescribes design and construction standards
						for fossil fuel combustion products sites. The owner or operator of such a site
						shall submit appropriate design plans, specifications and a design report that
						address, at a minimum, the requirements contained in this section.
1. A survey benchmark shall be identified and
					 its location referenced on drawings and maps of the site.
2. During construction and filling, off-site
					 runoff shall be diverted around the use, reuse or reclamation areas. The
					 uncovered active fossil fuel combustion products fill areas shall be graded to
					 a maximum slope of 5.0% and a smooth surface maintained to provide for sheet
					 flow runoff and to prevent dusting. Runoff from the use, reuse or reclamation
					 area shall be controlled and contained by use of diversion ditches, sediment
					 traps, berms or collection ponds in accordance with the site erosion control
					 plan. The use, reuse, or reclamation projects shall be designed to divert
					 surface water run on from a 25-year, 24-hour storm event. For projects
					 permitted by the Virginia Department of Energy, the standards for runon,
					 grading, and runoff shall be in accordance with the Coal Surface Mining
					 Reclamation Regulations (4VAC25-130).
3. Finished side slopes shall be stable and
					 be configured to adequately control erosion and runoff. Side slopes of 33% will
					 be allowed provided that adequate runoff controls are established. Steeper side
					 slopes may be considered if supported by necessary stability calculations and
					 appropriate erosion and runoff control features. All finished slopes and runoff
					 management units shall be supported by necessary calculations and included in
					 the design report.
4. The finished
					 top slope shall be at least 2.0% to prevent ponding of water, except where
					 covered by a building, a paved roadway, a paved parking surface, paved walkways
					 or sidewalks, or similar structures.
5. Specifications prepared by a registered
					 professional engineer shall be provided that indicate the criteria for the
					 placement of the fossil fuel combustion products based on the intended use of
					 the site. Specifications will include lab and field testing to be performed,
					 testing frequency based on the nature and source of the materials, and the
					 required performance of the material based on the intended use of the site. All
					 test methods will be in accordance with the Standard Guide for Design and
					 Construction of Coal Ash Structural Fills, American Standard Test Method
					 E2277-03 et seq., where applicable.
6. Upon reaching the final grade, the placed
					 material shall be covered in accordance with the requirements of Article 4 of
					 this part.
Statutory Authority: § 10.1-1402 of the Code of
						  Virginia;
						  42 USC §
														6941; 40 CFR Part
						  257.