Statutes, codes, and regulations
Wyoming Administrative Code
Agency 020 - Environmental Quality, Dept. ofSubagency 0014 - Storage TanksChapter 1 - STORAGE TANKS
Part E - RELEASE REPORTING, INVESTIGATION, CONFIRMATION AND RESPONSE
Section 1-20 - Release Investigation and Confirmation for Eligible Owners and/or Operators

020-1 Wyo. Code R. § 1-20

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Current through April 27, 2019
Section 1-20 - Release Investigation and Confirmation for Eligible Owners and/or Operators

Storage tank owners and/or operators who are eligible for cleanup under the Corrective Action Account shall comply with Section 25 and immediately investigate and confirm all suspected releases of regulated substances requiring reporting under Section 19 within 7 days of detection as follows:

(a) System Test. Owners and/or operators shall conduct tests according to the requirements for tightness testing in Sections 14(g) and 16(b) or, as appropriate, secondary containment testing described in Section 8(a)(v) that determine if a release has occurred from any portion of the storage tank system that routinely contains a regulated substance or a breach of either wall of the secondary containment has occurred. If the primary wall of a double-wall tank or double-wall/secondarily contained pipe fails, an integrity test of the outer wall and/or secondary containment shall be conducted. Owners and/or operators of all storage tanks shall also audit inventory control required by Section 16(a) or 36(e) for 12 months prior to the suspected release.

  • (i) Owners and/or operators shall repair, replace, or permanently close the storage tank system if the test results for the system, tank, or delivery piping indicate that a release exists.
  • (ii) Owners and/or operators shall conduct a thorough audit of their leak detection methods for the preceding year. This audit shall be performed by a qualified third party employed for this purpose by the owner and/or operator. In the event that the audit indicates a pattern of releases over several months, the department will complete the site check as described in Section 20(c).
  • (iii) Further investigation is not required if the test results for the system, tank, and delivery piping and the audit do not indicate that a release exists and if environmental contamination is not the basis for suspecting a release.

(b) Further Action. If the test results required under Section 20(a) do not indicate a release, but environmental contamination is the basis for suspecting a release, the department will complete the site check required under Section 20(c) and other Part E activities determined by the Solid and Hazardous Waste Division Administrator.

(c) Site Check. The department shall test for the presence of a release where contamination is most likely to be present at the storage tank site. In selecting sample types, sample locations, and measurement methods, the department shall consider the nature of the stored regulated substance, the type of initial alarm or cause for suspicion, the type of backfill, the depth of groundwater, and other factors appropriate for identifying the presence and source of the release. If the test results for the site check do not indicate that a release has occurred, further investigation is not required.

(d) Plans and Specifications. All plans, specifications and reports submitted to the department under this Section shall be signed and sealed by a Wyoming Registered Professional Engineer and/or a Wyoming Registered Professional Geologist, as applicable and required by state statute.

020-1 Wyo. Code R. § 1-20

Adopted, Eff. 6/29/2018.