[Code of Federal Regulations]
[Title 40, Volume 26]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR280.50]

[Page 516-517]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 280_TECHNICAL STANDARDS AND CORRECTIVE ACTION REQUIREMENTS FOR OWNERS AND 
 
      Subpart E_Release Reporting, Investigation, and Confirmation
 
Sec. 280.50  Reporting of suspected releases.


    Owners and operators of UST systems must report to the implementing 
agency within 24 hours, or another reasonable time period specified by 
the implementing agency, and follow the procedures in Sec. 280.52 for 
any of the following conditions:
    (a) The discovery by owners and operators or others of released 
regulated substances at the UST site or in the surrounding area (such as 
the presence of free product or vapors in soils, basements, sewer and 
utility lines, and nearby surface water).
    (b) Unusual operating conditions observed by owners and operators 
(such as the erratic behavior of product dispensing equipment, the 
sudden loss of product from the UST system, or an unexplained presence 
of water in the tank), unless system equipment is found to be defective 
but not leaking, and is immediately repaired or replaced; and,
    (c) Monitoring results from a release detection method required 
under Sec. 280.41 and Sec. 280.42 that indicate a release may have 
occurred unless:

[[Page 517]]

    (1) The monitoring device is found to be defective, and is 
immediately repaired, recalibrated or replaced, and additional 
monitoring does not confirm the initial result; or
    (2) In the case of inventory control, a second month of data does 
not confirm the initial result.