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Virginia Administrative Code
Title 9. Environment
Agency 25. State Water Control Board
Chapter 580. Underground Storage Tanks: Technical Standards and Corrective Action Requirements
7/5/2025

9VAC25-580-330. Assessing the site at closure or change-in-service.

A. Before permanent closure or a change-in-service is completed, owners and operators must measure for the presence of a release where contamination is most likely to be present at the UST site. In selecting sample type or types (soil or water) and sample location or locations, and measurement methods, owners and operators must consider the method of closure, the nature of the stored substance, the type of backfill, the depth to groundwater and other factors appropriate for identifying the presence of a release. Samples shall be tested according to established EPA analytical methods or methods approved by the department. Where the suspected release is a petroleum product, the samples shall be analyzed for total petroleum hydrocarbons (TPH). The requirements of this section are satisfied if one of the external release detection methods allowed in subdivisions 5 and 6 of 9VAC25-580-160 is operating in accordance with the requirements in 9VAC25-580-160 at the time of closure, and indicates no release has occurred.

B. In all cases where a sample or samples are analyzed, the owner and operator shall submit, along with the amended UST notification form as required in subdivision 1 of 9VAC25-580-320, a copy of the laboratory results (including a statement as to the test method used), a description of the area sampled, and a site map depicting tanks, piping, and sample location or locations.

C. If contaminated soils, contaminated groundwater or free product as a liquid or vapor is discovered under subsection A of this section, or by any other manner, owners and operators must begin corrective action in accordance with Part VI (9VAC25-580-230 et seq.) of this chapter.

Statutory Authority

§§ 62.1-44.15 and 62.1-44.34:9 of the Code of Virginia; 42 USC § 6901 et seq.; 40 CFR Parts 280 and 281.

Historical Notes

Derived from VR680-13-02 § 7.3, eff. October 25, 1989; amended, Virginia Register Volume 34, Issue 1, eff. January 1, 2018; Errata, 34:4 VA.R. 504 October 16, 2017; amended, Virginia Register Volume 39, Issue 5, eff. November 23, 2022.

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