Regulation .03 New Gasoline UST System.
Regulation .03 New Gasoline UST System.LinkCopy Citation
An owner of a new gasoline UST system, except for a new gasoline UST system in a HRGUA located in Anne Arundel County, shall:
A.
Comply with the following release prevention and detection requirements for a newly installed UST system:
(1)
If installing Stage II vapor recovery piping, install the Stage II vapor recovery piping in accordance with COMAR 26.10.03.02;
(2)
Install and utilize an interstitial release detection system for the UST system piping approved by the National Work Group on Leak Detection Evaluations;
(3)
If the UST system has a storage capacity of greater than 2,000 gallons or there are multiple USTs installed in a shared excavation zone:
(a)
Install four monitoring pipes in accordance with the specifications in COMAR 26.10.03.04B, with one monitoring pipe located in each corner of the excavation zone; and
(b)
In conjunction with the monitoring pipes required under §A(3)(a) of this regulation, install a piping system that is designed to allow for active ventilation of the excavation zone; and
(4)
Select and, upon receipt of Department approval, install one of the following systems to detect a spill, release, or discharge of gasoline liquid and vapors from the UST system:
(a)
A minimum of three monitoring wells that are:
(i)
Constructed in accordance with COMAR 26.04.04 and Department specifications;
(ii)
Located outside of the excavation zone;
(iii)
In locations that will allow for the determination of groundwater flow; and
(iv)
Placed in areas that are most likely to detect a spill, release, or discharge from the UST system;
(b)
A pressure control system that:
(i)
Is continuously operated;
(ii)
Continuously monitors storage tank pressure;
(iii)
Maintains storage tank pressure at an average negative pressure; and
(iv)
Prevents the release of gasoline vapors to the environment;
(c)
If the UST system excavation zone meets the conditions of §A(3) of this regulation by either having a storage capacity of greater than 2,000 gallons or multiple USTs installed in a shared excavation zone, a soil vapor extraction system that is:
(i)
Connected to the monitoring pipes and piping system required under §A(3) of this regulation; and
(ii)
Operated continuously to maintain active ventilation of the excavation zone; or
(d)
An alternative method that will detect a spill, release, or discharge of gasoline liquid and vapors from the UST system;
B.
Within 30 days of installing a UST system, and annually thereafter:
(1)
Sample each site supply well and groundwater monitoring well located at the oil storage facility using a method approved by the Department; and
(2)
Analyze each collected water sample in accordance with Regulation .05 of this chapter;
C.
Within 60 days after conducting a sample collection in accordance with §B of this regulation, submit the following documents to the Department:
(a)
A complete laboratory report that includes a copy of the laboratory sample acceptance form, sample chain-of-custody, and laboratory analytical results; and
(b)
A site map identifying each site supply well and groundwater monitoring well located at the oil storage facility; and
D.
Upon completing the installation, replacement, repair, or upgrade of a UST system and before placing the UST system in operation:
(1)
Test all primary piping that does not contain liquid gasoline, tank top fittings, Stage II piping, riser pipes, and vent piping using a helium pressure test, or other test approved by the Department, in accordance with procedures prescribed by the Department;
(2)
If leaks or deficiencies are found during the testing, make necessary repairs in accordance with COMAR 26.10.04.04; and
(3)
Upon completion of a repair, retest the UST system in accordance with §D(1) of this regulation to ensure the UST system does not leak.