Md. Code Regs. 26.10.07.04

Current through Register Vol. 51, No. 25, December 13, 2024

Section 26.10.07.04 - Existing Gasoline UST System

A. An owner of an existing gasoline UST system in a HRGUA, except for an existing gasoline UST system located in Anne Arundel County, shall:

(1) Not later than July 25, 2005, implement the following release detection methods:

(a) Sample each site supply well and any existing groundwater monitoring wells located on the oil storage facility;

(b) Install a minimum of three groundwater monitoring wells that are:

(i) Constructed in accordance with COMAR 26.04.04 and Department specifications;

(ii) 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;

(c) Sample each groundwater monitoring well installed pursuant to §A(1)(b) of this regulation; and

(d) Analyze each water sample collected pursuant to §A(1)(a) and (c) of this regulation in accordance with Regulation .05 of this chapter;

(2) On an annual basis, collect and analyze water samples from each site supply well and groundwater monitoring well in accordance with §A(1)(a), (c) and (d) of this regulation;

(3) Within 60 days after conducting a sample collection pursuant to §A(1) or (2) 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 on the oil storage facility; and

(4) Except for a UST system with Stage II piping decommissioned using a method approved by the Department, not later than January 26, 2006, and on a 24-month basis thereafter, test the UST system in accordance with the following procedures:

(a) 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;

(b) If leaks or deficiencies are found during the testing, make necessary repairs in accordance with COMAR 26.10.04.04; and

(c) Upon completion of a repair, retest the UST system in accordance with §A(4)(a) of this regulation to ensure the UST system does not leak.

B. An owner of an existing gasoline UST system in a WHPA shall:

(1) Not later than January 1, 2010, implement the following release detection methods:

(a) Sample any existing groundwater monitoring well, and if present, site supply well located on the oil storage facility;

(b) Install a minimum of three groundwater monitoring wells that are:

(i) Constructed in accordance with COMAR 26.04.04 and Department specifications;

(ii) 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;

(c) Sample each groundwater monitoring well installed pursuant to §B(1)(b) of this regulation; and

(d) Analyze each water sample collected pursuant to §B(1)(a) and (c) of this regulation in accordance with Regulation .05 of this chapter;

(2) On an annual basis, collect and analyze water samples from each groundwater monitoring well, and if present, site supply well in accordance with §B(1)(a), (c) and (d) of this regulation;

(3) Within 60 days after conducting a sample collection pursuant to §B(1) or (2) 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 groundwater monitoring well, and if present, site supply well located on the oil storage facility; and

(4) Except for a UST system with Stage II piping decommissioned using a method approved by the Department, not later than January 1, 2010, and on a 24-month basis thereafter test the UST system in accordance with the following procedures:

(a) 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;

(b) If leaks or deficiencies are found during the testing, make necessary repairs in accordance with COMAR 26.10.04.04; and

(c) Upon completion of a repair, retest the UST system in accordance with §B(4)(a) of this regulation to ensure the UST system does not leak.

Md. Code Regs. 26.10.07.04

Regulation .04 adopted effective 49:12 Md. R. 642, eff. 6/13/2022