Agencies | Governor
Virginia Regulatory Town Hall
Department of Conservation and Recreation
Virginia Soil and Water Conservation Board
Impounding Structure Regulations [4 VAC 50 ‑ 20]
This action is exempt from the executive branch review process.
Amendments to conform the Virginia Impounding Structure Regulations to legislative changes made duri
General Information
Action Summary Legislation enacted by the 2010 General Assembly Session resulted in modifications to certain technical elements of the Virginia Dam Safety Act that require amendments to the Virginia Impounding Structure Regulations. From Chapter 270 (HB438), this action incorporates the incremental damage analysis floor of the 100-yr flood for high hazard dams (per §10.1-605 B) and language allowing the dam owner to submit his or her own plan to address impounding structure deficiencies (per §10.1-609 A). From Chapter 249 (SB276), this action incorporates most of §10.1-605 B to address the revised 0.9 PMP standard for dams in existence or under construction as of July 1, 2010 as well as the certification requirements associated with the opportunity for certain dams to come into compliance with a 0.6 PMP standard.
Chapters Affected Only affects this chapter.
Exempt from APA Yes, this action is exempt from Article II of the APA and executive branch review.
Exempt Citation: § 2.2-4006 4.(a)
RIS Project Yes  [002417]
New Periodic Review This action will not be used to conduct a new periodic review.
Stages associated with this regulatory action.
Stage ID Stage Type Status
5708 Final Stage complete. This regulation became effective on 12/22/2010.
Contact Information
Name / Title: Lisa McGee  / Policy and Planning Director
Address: 600 East Main Street, 24th Floor
Richmond, VA 23219
Email Address:
Phone: (804)786-4378    FAX: (804)786-6141    TDD: ()-

This person is the primary contact for this agency.