New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wq - Water Quality and Quantity Programs
Chapter Env-Wq 1500 - ALTERATION OF TERRAIN
Part Env-Wq 1502 - DEFINITIONS
Section Env-Wq 1502.30 - High-load area

Universal Citation: NH Admin Rules Env-Wq 1502.30

Current through Register No. 13, March 27, 2025

"High-load area" means a land use or activity listed in (a) or (b), below, unless a source control plan for the site on which the use or activity occurs demonstrates that there will be no exposure of regulated substances to precipitation or runoff and no release of regulated substances from any portion of the site:

(a) Any land use or activity in which regulated substances are exposed to rainfall or runoff with the exception of areas where the only regulated substance exposed to rainfall or runoff is road salt that has been applied for deicing of pavement on the site; or

(b) Any land use or activity that typically generates higher concentrations of hydrocarbons, metals, or suspended solids than are found in typical stormwater runoff, including but not limited to the following:

(1) Industrial facilities subject to the NPDES Multi-Sector General Permit, not including areas where industrial activities do not occur, such as at office buildings and their associated parking facilities or in drainage areas at the facility where a certification of no exposure pursuant to 40 CFR § 122.26(g) will always be possible;

(2) Petroleum storage facilities;

(3) Petroleum dispensing facilities;

(4) Vehicle fueling facilities;

(5) Vehicle service, maintenance and equipment cleaning facilities;

(6) Fleet storage areas;

(7) Public works storage areas;

(8) Road salt facilities;

(9) Commercial nurseries;

(10) Non-residential facilities having uncoated metal roofs with a slope flatter than 20%;

(11) Facilities with outdoor storage, loading, or unloading of hazardous substances, regardless of the primary use of the facility; and

(12) Facilities subject to chemical inventory under Section 312 of the Superfund Amendments and Reauthorization Act of 1986 (SARA).

(See Revision Note #1 at chapter heading for Env-Wq 1500) #9343, eff 1-1-09

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