An owner of a new gasoline UST system, except for a new gasoline UST system in a HRGUA located in Anne Arundel County, shall: Comply with the following release prevention and detection requirements for a newly installed UST system: If installing Stage II vapor recovery piping, install the Stage II vapor recovery piping in accordance with COMAR 26.10.03.02; Install and utilize an interstitial release detection system for the UST system piping approved by the National Work Group on Leak Detection Evaluations; 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: 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 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 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 minimum of three monitoring wells that are: Constructed in accordance with COMAR 26.04.04 and Department specifications; Located outside of the excavation zone; In locations that will allow for the determination of groundwater flow; and Placed in areas that are most likely to detect a spill, release, or discharge from the UST system; A pressure control system that: Is continuously operated; Continuously monitors storage tank pressure; Maintains storage tank pressure at an average negative pressure; and Prevents the release of gasoline vapors to the environment; 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: Connected to the monitoring pipes and piping system required under §A(3) of this regulation; and Operated continuously to maintain active ventilation of the excavation zone; or An alternative method that will detect a spill, release, or discharge of gasoline liquid and vapors from the UST system; Within 30 days of installing a UST system, and annually thereafter: Sample each site supply well and groundwater monitoring well located at the oil storage facility using a method approved by the Department; and Analyze each collected water sample in accordance with Regulation .05 of this chapter; Within 60 days after conducting a sample collection in accordance with §B of this regulation, submit the following documents to the Department: A complete laboratory report that includes a copy of the laboratory sample acceptance form, sample chain-of-custody, and laboratory analytical results; and A site map identifying each site supply well and groundwater monitoring well located at the oil storage facility; and Upon completing the installation, replacement, repair, or upgrade of a UST system and before placing the UST system in operation: 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; If leaks or deficiencies are found during the testing, make necessary repairs in accordance with COMAR 26.10.04.04; and 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.