North Dakota Administrative Code › Title 33.1 - Department of Environmental Quality › Article 33.1-24 - Hazardous Waste Management › Chapter 33.1-24-08 - Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks › Section 33.1-24-08-30 - General release detection requirements for all underground storage tank systems

Current through Supplement No. 393, July, 2024
1. Owners and
				operators of underground storage tank systems must provide a method, or
				combination of methods, of release detection that:
a. Can detect a release from any portion of
				the tank and the connected underground piping that routinely contains
				product;
b. Is installed and
				calibrated in accordance with the manufacturer's instructions;
c. Beginning on April 1, 2021, is operated
				and maintained, and electronic and mechanical components are tested for proper
				operation, in accordance with one of the following: manufacturer's
				instructions, a code of practice developed by a nationally recognized
				association or independent testing laboratory, or requirements determined by
				the department to be no less protective of human health and the environment
				than the two options listed above. A test of the proper operation must be
				performed at least annually and, at a minimum, as applicable to the facility,
				cover the following components and criteria:
(1) Automatic tank gauge and other
				controllers: test alarm, verify system configuration, and test battery
				backup;
(2) Probes and sensors:
				inspect for residual buildup, ensure floats move freely, ensure shaft is not
				damaged, ensure cables are free of kinks and breaks, and test alarm operability
				and communication with controller;
(3) Automatic line leak detector: test
				operation to meet criteria in subsection 1 of section
				33.1-24-08-34 by simulating a
				leak;
(4) Vacuum pumps and pressure
				gauges: ensure proper communication with sensors and controller; and
(5) Hand-held electronic sampling equipment
				associated with groundwater and vapor monitoring: ensure proper operation.
NOTE: The following code of practice may be used to comply
				  with subdivision c of subsection 1: Petroleum Equipment Institute Publication
				  RP1200, "Recommended Practices for the Testing and Verification of Spill,
				  Overfill, Leak Detection and Secondary Containment Equipment at UST
				  Facilities".
d.
				Meets the performance requirements in sections
				33.1-24-08-33,
				33.1-24-08-34,
				33.1-24-08-70,
				33.1-24-08-71, or
				33.1-24-08-72, as applicable,
				with any performance claims and their manner of determination described in
				writing by the equipment manufacturer or installer. In addition, the methods
				listed in subsections 2, 3, and 4 of section
				33.1-24-08-33; subsections 1 and
				2 of section
				33.1-24-08-34; and sections
				33.1-24-08-70,
				33.1-24-08-71, or
				33.1-24-08-72, must be capable
				of detecting the leak rate or quantity specified for that method in the
				corresponding section of the rule with a probability of detection of
				ninety-five hundredths and a probability of false alarm of five
				hundredths.