Oklahoma Administrative Code › Title 165 - Corporation Commission › Chapter 25 - Underground Storage Tanks › Subchapter 3 - Release Prevention and Detection Requirements › Part 3 - RELEASE INVESTIGATION REQUIREMENTS › Section 165:25-3-7.1 - Release reporting

Current through Vol. 41, No. 20, July 1, 2024
(a) The
				  reporting requirements of this Part do not relieve the owner/operator of the
				  responsibility to take necessary corrective action pursuant to OAC 165:29, to
				  protect the public health, safety and the environment, including the
				  containment and cleanup of spills and overfills that are not required to be
				  reported by this Chapter.
(b) All
				  underground storage tank system owners, operators, their employees or agents,
				  or transporters must report to PSTD within twenty-four (24) hours of
				  discovering any substances, conditions or monitoring results that indicate a
				  release may have occurred using the link provided on the release reporting tab
				  on PSTD's webpage on the Commission website; by email at
				  PSTReleaseReporting@occ.ok.gov; or by telephone at (405) 521-4683 or
				  1-888-621-5878. If after hours, or on weekends or holidays, call the PSTD
				  emergency phone number at (405) 823-0994. Owners or operators must provide
				  written confirmation to follow within twenty (20) days in accordance with the
				  requirements established in this Chapter. Events indicating a release include,
				  but are not limited to, the following:
(1)
				  The discovery of released regulated substances at the facility or in the
				  surrounding area (such as the presence of free product or vapors in soils,
				  basements, crawlspaces, sewer and utility lines, and nearby surface water)
				  whether on-site or off-site.
(2)
				  Any unusual operating conditions observed, such as the unexplained erratic
				  behavior of product dispensing equipment, the sudden loss of product from the
				  underground storage tank system, an unexplained presence of water in the tank,
				  or liquid in the interstitial space of secondarily contained systems, unless
				  the system equipment or component is found not to be releasing regulated
				  substances to the environment; any defective system equipment or component is
				  immediately repaired or replaced; for secondarily contained systems any liquid
				  in the interstitial space not used as part of the interstitial monitoring
				  method (for example brine filled) is immediately removed.
(A) In the case of inventory control, two
				  consecutive thirty (30) day periods where the Total Gallons Over/Short is
				  greater than the "Leak Check" (one percent (1%) of product sales plus 130
				  gallons) must be reported to PSTD within twenty-four (24) hours of the
				  owner/operator discovering the inventory control results.
(B) Any UST system failure from a third
				  party-certified Statistical Inventory Reconciliation (SIR) analysis must be
				  reported to PSTD by the owner, operator, or agent within twenty-four (24) hours
				  of discovering the failure. An immediate investigation into the cause of the
				  failed report must be conducted and results reported to PSTD within seven (7)
				  days.
(C) An "Inconclusive" report
				  from an SIR analysis must be reported by the owner, operator, or agent within
				  twenty-four (24) hours of report generation. An Inconclusive means that the UST
				  system has failed to meet leak detection requirements for that month thirty
				  (30) day period.
(3) An
				  unusual level of vapors on the site that is of unknown origin. A vapor
				  observation well reading in excess of 4,000 units/ppm from a pit containing
				  gasoline tanks, and in excess of 1,500 units/ppm for a pit containing diesel or
				  both gasoline and diesel, must be reported to PSTD within twenty-four (24)
				  hours by the owner/operator, their employees, or agents discovering the
				  monitoring results. Within ten (10) days, the owner/operator must submit to
				  PSTD all vapor monitoring well data for the last twelve (12) thirty (30) day
				  periods. Upon examination of the submitted data, PSTD will advise the
				  owner/operator what action, if any, is needed.
(4) An increase in vapor levels of 500
				  units/ppm above background or historical levels detected by thirty (30) day
				  monitoring, even though below the twenty-four (24)-hour reporting level, must
				  be reported if the increase does not correct itself in the second thirty (30)
				  day period of monitoring and it must be reported to PSTD within twenty-four
				  (24) hours of the owner, operator, their employees, or agents discovering the
				  monitoring results.
(5) Monitoring
				  results, including investigation of an alarm, from a release detection method
				  required by this Chapter that indicate a release may have occurred unless:
(A) The monitoring device is found to be
				  defective, and is immediately repaired, recalibrated, or replaced, and
				  additional monitoring does not confirm the initial result;
(B) The leak is contained in the secondary
				  containment and;
(i) Any liquid in the
				  interstitial space not used as the interstitial monitoring method is
				  immediately removed.
(ii) Any
				  defective system equipment or component is immediately repaired or
				  replaced.
(C) The alarm
				  was investigated and determined to be a non-release event (for example, from a
				  power surge or caused by filling the tank during release detection
				  testing.