Nevada Administrative Code
Chapter 445C - Environmental Requirements
CLEANUP OF DISCHARGED PETROLEUM
Section 445C.250 - Testing and inspection of storage tanks

Universal Citation: NV Admin Code 445C.250

Current through December 12, 2024

1. Except as otherwise provided in this section, each operator of a registered underground storage tank shall comply with the provisions of NAC 459.994.

2. The operator of a registered storage tank that is above ground shall perform or cause to be performed an inspection of the storage tank at least once each month. The monthly inspection must include, without limitation:

(a) Visual inspection of the aboveground storage tank system to identify cracks or other defects in the secondary containment area and product transfer area;

(b) Visual inspection of the exterior surfaces of the storage tanks, piping, valves, pumps and other equipment for cracks, corrosion, releases and maintenance deficiencies and to identify malfunctioning equipment, needed maintenance and needed revisions to current operating practices;

(c) Visual inspection of the elevated storage tanks or storage tanks on concrete slabs; and

(d) Unless the secondary containment of the storage tank has a sound concrete floor or liner or is of a double-walled construction:
(1) Visual inspection of the area between the outer shell of the storage tank or the floor of the storage tank and the containment area; or

(2) Vapor monitoring of the soil directly beneath the storage tank bottom or perimeter and the water table.

3. The operator of a registered storage tank that is above ground and which has any portion of the distribution piping associated with the storage tank underground so that the distribution piping cannot be visually inspected shall, at least once each year, hire:

(a) A contractor who is certified by the Division to perform line tightness testing in accordance with 40 C.F.R. § 280.44(b); and

(b) If the underground portion of the distribution piping associated with the storage tank is constructed of metal and the metal is in contact with the ground, a qualified cathodic protection tester to verify that the distribution piping which is metal and which is in contact with the ground is adequately protected from corrosion in accordance with 40 C.F.R. § 280.31.

If the distribution piping which is metal and which is in contact with the ground is not adequately protected from corrosion, the operator must:

(1) Upgrade the distribution piping pursuant to 40 C.F.R. § 280.21(c); or

(2) Repair the existing cathodic protection system to ensure compliance with 40 C.F.R. § 280.21(c).

4. A registered portable storage tank must be inspected visually by the operator immediately before and after the portable storage tank is relocated.

5. A marina storage tank must be tested and inspected in accordance with the provisions of NAC 459.9938.

6. The operator of a registered storage tank shall maintain a record of each test or inspection conducted pursuant to this section on a form approved by the Division in the following manner:

(a) For at least 12 months after the date of the test or inspection for an underground storage tank with such records containing the information required by 40 C.F.R. § 280.45; or

(b) For at least 3 years after the date of the test or inspection for a storage tank that is above ground.

7. The operator of a registered storage tank that is above ground shall maintain a record of any maintenance or repairs for the storage tank that is made as a result of a test or inspection conducted pursuant to this section. Such a record must be maintained on a form approved by the Division for at least 3 years after the date of the maintenance or repair.

8. An operator who is required to maintain a record pursuant to subsection 6 or 7 shall provide to the Division a copy of the record when so requested by the Division.

(Added to NAC by Bd. to Review Claims, eff. 6-15-90; A 12-23-91; 1-22-96; A by Div. of Environmental Protec. by R226-05, 5-4-2006; A by Environmental Comm'n by R106-16, 11-2-2016) - (Substituted in revision for NAC 590.740); A by R049-21A, eff. 4/11/2022

NRS 445C.310, 445C.360, as amended by section 4 of Assembly Bill No. 40, chapter 314, Statutes of Nevada 2021, at page 1864.

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