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Virginia Administrative Code
Title 9. Environment
Agency 25. State Water Control Board
Chapter 91. Facility and Aboveground Storage Tank (AST) Regulation
11/23/2024

9VAC25-91-20. Applicability.

A. The operator shall comply with all applicable requirements pursuant to this chapter. The operator as defined in this chapter can be more than one person and each operator shares joint responsibility for compliance.

B. The requirements of this chapter apply as follows:

1. The provisions of Part II (9VAC25-91-100 et seq., Registration, Notification and Closure Requirements) of this chapter apply to: (i) an individual AST located within the Commonwealth of Virginia with an aboveground storage capacity greater than 660 gallons of oil, unless otherwise specified within this chapter; and (ii) all facilities in the Commonwealth of Virginia with an aggregate aboveground storage capacity greater than 1,320 gallons of oil, unless otherwise specified within this chapter. Storage of oil that is excluded from regulation in 9VAC25-91-30 A is not included when calculating the aggregate aboveground storage capacity.

2. The provisions of Part III (9VAC25-91-130 et seq., Pollution Prevention Requirements) of this chapter apply to: (i) an individual AST located within the Commonwealth of Virginia with an aboveground storage capacity of 25,000 gallons or greater of oil, unless otherwise specified within this chapter; and (ii) all facilities in the Commonwealth of Virginia with an aggregate aboveground storage capacity of 25,000 gallons or greater of oil, unless otherwise specified within this chapter. Storage of oil that is excluded from regulation in 9VAC25-91-30 A is not included when calculating the aggregate aboveground storage capacity.

3. The provisions of Part IV (9VAC25-91-170, Oil Discharge Contingency Plan (ODCP) Requirements) of this chapter apply to: (i) an individual AST located within the Commonwealth of Virginia with an aboveground storage capacity of 25,000 gallons or greater of oil, unless otherwise specified within this chapter; and (ii) all facilities in the Commonwealth of Virginia with an aggregate aboveground storage capacity of 25,000 gallons or greater of oil, unless otherwise specified within this chapter. Storage of oil that is excluded from regulation in 9VAC25-91-30 A is not included when calculating the aggregate aboveground storage capacity.

4. The provisions of Part V (9VAC25-91-180 et seq., Groundwater Characterization Study (GCS) and GCS Well Monitoring Requirements) of this chapter apply to: (i) an individual AST located within the Commonwealth of Virginia with an aboveground storage capacity of one million gallons or greater of oil, unless otherwise specified within this regulation; and (ii) all facilities in the Commonwealth of Virginia with an aggregate aboveground storage capacity of one million gallons or greater of oil, unless otherwise specified within this chapter. Storage of oil that is excluded from regulation in 9VAC25-91-30 A is not included when calculating the aggregate aboveground storage capacity.

Statutory Authority

§§ 62.1-44.15, 62.1-44.34:15, 62.1-44.34:15.1 and 62.1-44.34:19.1 of the Code of Virginia.

Historical Notes

Derived from Virginia Register Volume 14, Issue 18, eff. June 24, 1998; Errata, 14:23 VA.R 3682 August 3, 1998; amended, Virginia Register Volume 31, Issue 26, eff. November 1, 2015.

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