As used in this article, the following terms
shall have the meanings indicated:
AQUIFER
A geologic formation, group of formations, or part of a formation
that is capable of yielding a significant amount of water to a well
or a spring under ordinary hydraulic gradients.
DISCHARGE
The spilling, leaking, pumping, pouring, emitting, emptying,
or dumping of toxic or hazardous materials upon or into any land or
waters in the Town of Derry. Discharge includes, without limitation,
leakage of such materials from failed or discarded containers or underground
or aboveground storage systems and disposal of such materials into
any on-site sewage disposal system, dry well, catch basin, or unapproved
landfill.
GROUNDWATER
Water below the land surface in the zone of saturation of
the soil or rock and includes perched water separated from the main
body of groundwater by an unsaturated zone.
HAZARDOUS OR TOXIC MATERIALS AND WASTE
Any substance or mixture of such physical, chemical, or infectious
characteristics as to pose a significant, actual or potential hazard
to water supplies, or other hazard to human health, if such substance
or mixture were discharged to land or waters of this Town, as referenced
below. Toxic or hazardous materials include, without limitation, volatile
organic chemicals, heavy metals, radioactive or infectious wastes,
acids and alkalis and include products such as pesticides, herbicides,
solvents and thinners and such other substances as defined in New
Hampshire Water Supply and Pollution Control Division Rules, Env-Wm
102.73, in New Hampshire Solid Waste Rules Document 5172, or as amended,
as listed in New Hampshire Waste Management Division Hazardous Waste
Rules, Env-Wm 100 through Env-Wm 1000, as specified in Env-Wm Part
402 through Env-Wm Part 404.
IMPERVIOUS SURFACE
A.
Created as a result of human activity, such
as driveways, parking lots, roads, access drives, rooftops, compacted
lawns and other features at or above the soil surface that impede
infiltration of water into the soil to provide groundwater recharge.
[Amended 6-5-2007]
B.
Naturally occurring, relatively impervious conditions
such as bedrock outcrops and soil with restrictive layers within 18
inches from below the natural soil surface.
LEACHABLE WASTES
Waste materials, including solid wastes, sludge and agricultural
wastes, that are capable of releasing waterborne contaminants to the
surrounding environment.
MINING
The removal of geological materials such as topsoil, sand,
gravel, or bedrock.
NONCONFORMING USE
Any lawful use of buildings, structures, premises, land or
parts thereof existing as of the effective date of this article, or
amendment thereto, and not in conformance with provisions of this
article shall be considered to be a nonconforming use.
PRIMARY RECHARGE AREA
Areas that collect precipitation or surface water and transmit
it into the area of contribution to existing or potential water supply
wells. Primary recharge areas are stratified drift aquifer areas surrounding
existing or potential water supply well sites.
SANITARY WASTEWATER
Wastewater arising from ordinary domestic water use as from
toilets, sinks, bathing facilities, etc., and containing such concentrations
and types of pollutants as to be considered normal household wastes.
SATURATED ZONE
The zone beneath the land surface in which all open spaces
are filled with water.
SLUDGE
Residual materials produced by the sewage treatment process.
SOLID WASTE
Any discarded or abandoned material, including refuse, putrescible
material, septage, or sludge, as defined by New Hampshire Solid Waste
Rules Env-Wm 100-2800, or as amended. Solid waste includes solid,
liquid, semisolid, or certain gaseous waste material resulting from
residential, industrial, commercial, mining, and agricultural operations
and from community activities.
STRATIFIED DRIFT
Sorted and layered unconsolidated deposits formed in streams
flowing from glaciers or settled from suspension in quiet water bodies
fed by such streams.
STRUCTURE
Anything constructed or erected, except a boundary wall or
fence, the use of which requires location on the ground or attachment
to something on the ground. For the purpose of this article, buildings
are structures.
The following uses shall not be permitted within
the GRCD:
B. Underground storage of hazardous or toxic materials
and waste.
C. Industrial uses which discharge contact-type process
waters on site. Noncontact cooling water is permitted.
D. Dumping of snow containing de-icing chemicals brought
from outside the GRCD.
F. All on-site treatment, disposal, or recycling of hazardous
or toxic materials as a principal business operation.
G. Any other use or activity that, based upon the following
findings of fact:
(1) Will have a detrimental effect on the quality of the
groundwater contained in the aquifer by directly contributing to pollution
or by increasing the long-term susceptibility of the aquifer to potential
pollutants.
(2) Will cause a significant reduction in the long-term
volume of water contained in the aquifer or in the storage capacity
of the aquifer.
(3) Will discharge wastewater on site other than that
which is permitted under the provisions of this article.
In all cases where the GRCD is superimposed
over another zoning district in the Town of Derry, that district whose
regulations are the more restrictive shall apply.