(a) Use of regulated substances in conjunction with Municipal water supply and treatment activities shall not be restricted by this section. Storage of regulated substances in conjunction with municipal water supply and treatment activities shall not be restricted by this section. The use and storage of regulated substances in conjunction with public wastewater treatment, conveyance and operation facilities owned, operated and maintained by Montgomery County or the public water supply purveyor which these standards are designed to protect shall not be restricted by this section.
(b) Use of regulated substances in conjunction with special uses in this district shall be limited, per special use, to:
(1) The aggregate of regulated substances in use may not exceed twenty (20) gallons or 160 pounds at any time.
(2) The total use of regulated substances may not exceed fifty-five (55) gallons or 450 pounds in any twelve (12) month period.
(c) A limited exclusion from the provisions of subsection (b) hereof is authorized for nonroutine maintenance or repair of property or equipment. The use of regulated substances under this exclusion shall be limited, per special use, to:
(1) The aggregate of regulated substances in use may not exceed fifty-five (55) gallons or 450 pounds at any time.
(2) The total use of regulated substances may not exceed 110 gallons or 900 pounds in any twelve (12) month period.
(d) Storage of fuel and lubricants for vehicle operations in conjunction with permitted and conditional uses in this District shall be in tanks placed above the floor surface of a below grade vault. Such vault shall allow access for physical inspection of the tank for leakage and the interior of the vault shall be continuously monitored and alarmed to provide for automatic and immediate detection of any release from the tank.
(e) Notwithstanding other provisions of this section, nonconforming uses in this District presently utilizing underground storage tanks for fuel and lubricants for vehicle operations shall be permitted to replace existing tanks with those constructed as per the specifications of subsection (d) hereof and not exceeding the capacity of existing tanks. Replacement of underground tanks for regulated substances other than fuel and lubricants for vehicle operations is not permitted.
(f) Storage of regulated substances other than fuel and lubricants for vehicle operations in conjunction with permitted and special uses in this district is prohibited.
(g) As part of the findings required under Section 1123.05(d), the Zoning Officer shall utilize the Hazard Potential Ranking System, in Section 1179.05 to assist in the determination of intensity of use within this District. No substitutions of a nonconforming use shall be permitted which result in an increase of the hazard potential ranking on a parcel within this District.
(h) All uses within this District shall be connected to the public wastewater disposal system or have a City-approved wastewater disposal plan within a three (3) year period of the establishment of the District. (Ord. 1203-97. Passed 7-10-97.)