Sec. 26.10.02.03. High Risk Groundwater Use Area — Definitions

A. In Regulations .03-1-.03-6 of this chapter, the following terms have the meanings indicated.

B. Terms Defined.

(1) "Existing gasoline UST system" means an underground tank system:

(a) Installed before January 26, 2005;

(b) Used to fuel motor vehicles;

(c) That has a storage capacity greater than 2,000 gallons; and

(d) That is equipped with Stage II vapor recovery.

(2) "High risk groundwater use area" means all areas served by individual water supply systems, as defined in COMAR 26.04.03.01-1B(8), in:

(a) Baltimore, Carroll, Cecil, Frederick, and Harford counties;

(b) Anne Arundel, Baltimore, Carroll, Cecil, Frederick, and Harford counties for groundwater contamination notification requirements of Environment Article, §4-411.2, Annotated Code of Maryland.

(3) "Levels of concern" means:

(a) Benzene at (=) 5 parts per billion;

(b) Toluene at (=) 1,000 parts per billion;

(c) Ethylbenzene at (=) 700 parts per billion;

(d) Xylenes at (=) 10,000 parts per billion; and

(e) Methyl tertiary Butyl Ether (MtBE) at (=) 20 parts per billion.

(4) "Local government" means a county, municipal corporation, or sanitary district.

(5) "New gasoline UST system" means an underground tank system, including a replacement tank system, installed after January 26, 2005 and used to fuel motor vehicles.

(6) "Well" means a hole made in the ground to obtain or monitor ground water.

(7) "Well head protection area" in this chapter means an area in Baltimore, Carroll, Cecil, Frederick, and Harford counties identified and regulated by a local government:

(a) Surrounding one or more wells serving a community water system as defined by COMAR 26.04.01.01B(5); or

(b) Surrounding one or more wells serving a public water system as defined by COMAR 26.04.01.01B(34).