15A NCAC 02N .0304. IMPLEMENTATION SCHEDULE FOR PERFOMANCE STANDARDS FOR NEW UST SYSTEMS AND UPGRADING REQUIREMENTS FOR EXISTING UST SYSTEMS LOCATED IN AREAS DEFINED IN RULE .0301(D)

(a)  The following implementation schedule shall apply only to owners and operators of UST systems located within areas defined in Rule .0301(d) of this Section. This implementation schedule shall be used by the Department for tank owners and operators to comply with the secondary containment requirements contained in Rule .0301(d) for new UST systems and the secondary containment requirements contained in Rule .0302(a) for existing UST systems.

(1)           All new UST systems and replacements to an UST system shall be provided with secondary containment as of April 1, 2001.

(2)           All steel or metal connected piping and ancillary equipment of an UST regardless of date of installation, shall be provided with secondary containment as of January 1, 2005.

(3)           All fiberglass or non-metal connected piping and ancillary equipment of an UST regardless of date of installation, shall be provided with secondary containment as of January 1, 2008.

(4)           All UST systems installed on or before January 1, 1991 shall be provided with secondary containment as of January 1, 2008.

(5)           All UST systems installed after January 1, 1991 shall be provided with secondary containment as of January 1, 2016.

(b)  All owners and operators of UST systems shall implement the following enhanced leak detection monitoring as of April 1, 2001.  The enhanced leak detection monitoring must consist of the following:

(1)           Install an automatic tank gauging system (ATG) for each UST;

(2)           Install an electronic line leak detector (ELLD) for each pressurized piping system;

(3)           Conduct at least one 0.1 gallon per hour (gph) test per month or at least one 0.2 gph test per week on each UST system;

(4)           Conduct a line tightness test capable of detecting a leak rate of 0.1 gph, at least once per year for each suction piping system. No release detection is required for suction piping that is designed and constructed in accordance with 40 CFR 280.41(b)(2)(i) through (iv);

(5)           If the UST system is located within 500 feet of a public water supply well or within 100 feet of any other well supplying water for human consumption, sample the supply well at least once per year. The sample collected from the well must be analyzed for the constituents of petroleum using the following methods:

(A)          EPA Methods 601 and 602, including methyl tertiary butyl ether, isopropyl ether and xylenes;

(B)          EPA Method 625; and

(C)          If a waste oil UST system is present which does not meet the requirements for secondary containment in accordance with 40 CFR 280.42(b)(1) through (4), the sample shall also be analyzed for lead and chromium using Standard Method 3030C preparation.

(6)           The first sample collected in accordance with Subparagraph (b)(5) of this Rule shall be collected and the results received by the Division by October 1, 2000 and yearly thereafter.

(c)  An UST system or UST system component installation completed on or after November 1, 2007 to upgrade or replace an UST system or UST system component described in Paragraph (a) of this Rule shall meet the performance standards of Section .0900 of this Subchapter.

 

History Note:        Authority G.S. 143-215.3(a)(15); 143B-282(a)(2)(h);

Temporary Adoption Eff. May 1, 2000;

Eff. April 1, 2001;

Amended Eff. November 1, 2007.