A. 
By the authority granted under RSA 674:21, I(j), Environmental characteristics zoning, and RSA 674:16, Grant of power, as amended, and in the interest of the public health, safety and the general welfare, the Groundwater Resource Conservation District (GRCD) is established to protect, preserve and maintain existing and potential groundwater resources and primary groundwater recharge areas within this district, known as "aquifers," from adverse development, land use practices or depletion. Derry's Master Plan, 1994 update, adopted June 1994, and the Water Resource Management and Protection Plan, adopted 1989, propose such protection.
B. 
This is to be accomplished by regulating land uses which would contribute polluted water and pollutants to designated aquifers identified as being needed for present and future public and private water supply.
A. 
The GRCD is identified as those areas designated as stratified drift by blue shading which appears on maps prepared by the United States Geological Survey in cooperation with the State of New Hampshire Department of Environmental Services Water Resources Division identified as United States Geological Survey, Water Resources Investigations Report (WRIR) 91-4025, Bow, New Hampshire, 1992, or as amended.
B. 
These areas are subject to any additional standards which apply to the underlying zoning classification.
C. 
The GRCD map may be seen at the Planning Board office during its business hours.
A. 
Planning Board. During Planning Board review, when the actual boundary of the GRCD is disputed by any owner or abutter affected by said boundary, the Planning Board, at the owner/abutter's expense and request, may engage the services of a professional hydrologist, certified geologist, or soil scientist, or registered professional engineer, to determine the site-specific boundary of said district. Based upon the site-specific, documented, scientific and technical information submitted by the qualified professional, in these cases, the Planning Board shall have the authority to make the final determination as to the location of a disputed boundary.
B. 
Code Enforcement Officer (CEO). Approved building lots shall be under the authority of the CEO, who many use the same professionals listed in Subsection A. Based upon the site-specific, documented, scientific and technical information submitted by the qualified professional, in these cases, the CEO shall have the authority to make the final determination as to the location of a disputed boundary.
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.
A. 
The Conservation Commission shall be notified by the Code Enforcement Officer upon receipt of any permit application in the GRCD.
B. 
Rulings of the Code Enforcement Officer may be appealed to the Zoning Board of Adjustment (ZBA).
C. 
The ZBA may require that the applicant for a special exception provide data or reports by a professional hydrologist, certified geologist or soil scientist or registered professional engineer to certify with appropriate evidence that conditions in § 165-67B(1), (2), (3) and (4) are true. The ZBA may engage such professional assistance as it requires to adequately evaluate such reports and to assess the proposed use in accordance with the above-mentioned criteria. Said services shall be paid by the applicant.
D. 
All development proposals shall be subject to review in accordance with the provisions of Chapter 170, Land Development Control Regulations.
E. 
Residential. Nothing in this article shall be deemed to prohibit the storage and handling of products for normal household use.
F. 
Manure, agricultural compost and chemical fertilizer shall be handled in accordance with RSA 431:33 to 431:35, or as amended. See Manual of Best Management Practices for Agriculture in New Hampshire as prepared by the New Hampshire Department of Agriculture, August 1993, or as amended.
A. 
Any use permitted in the underlying district shall be permitted within the GRCD except those which are expressly prohibited in § 165-66, with the following additional conditions:
(1) 
Coverage. No more than 30% of a lot shall be rendered impervious by building and pavement, unless the applicant demonstrates in the site plan application that he/she has incorporated engineering technology in the drainage design to allow recharge of the aquifer.
(2) 
Aboveground storage. Commercial and industrial chemicals, road salt, fertilizers, herbicides, pesticides, and other hazardous or toxic materials and waste shall be stored within a fully enclosed structure, with an impermeable floor, designed to contain any spill within the structure.
(3) 
Location. Where the premises are partially outside of the GRCD, potential pollution sources such as on-site waste disposal systems shall be located outside the GRCD to the extent feasible.
(4) 
Drainage. All construction and/or development activities shall incorporate drainage design standards for stormwater management and erosion and sedimentation control which, at a minimum, reflect the recommendations of the publication Stormwater Management and Erosion and Sediment Control Handbook for Urban and Developing Areas in New Hampshire, prepared by the Rockingham County Conservation District, prepared for the Department of Environmental Services in cooperation with the United States Department of Agriculture, Soil Conservation Service, August 1992, or as amended.
(5) 
Septic system design and installation. In addition to meeting all local and state septic system requirements, all new on-lot sanitary wastewater disposal systems installed in the GRCD shall be designed by a septic system designer and installer licensed in New Hampshire. These systems shall be installed under the supervision of the Health Officer, who shall perform a basic area inspection, in person, as part of said supervision.
B. 
The Health Officer or qualified agent of the Town shall inspect the installation of each new system prior to covering and shall certify that the system has been installed as designed.
C. 
Septic systems are to be constructed in accordance with the most recent edition of Chapter Env-Ws 1000, Subdivision and Individual Sewage Disposal System Design Rules, as published by the New Hampshire Water Supply and Pollution Control Division, or as amended.
The following uses shall not be permitted within the GRCD:
A. 
Disposal of solid waste.
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.
E. 
Junk and salvage yards.
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.
A. 
Hazardous or toxic material and waste. Waste generated by, but not limited to, the following commercial activities is presumed to be toxic or hazardous, unless and except to the extent that anyone engaging in such an activity can demonstrate the contrary:
Airplane, boat and motor vehicle service and repair
Chemical and bacteriological laboratory operation
Dry cleaning
Electronic circuit manufacturing
Metal plating, finishing and polishing
Motor and machinery service and assembly
Painting, wood preserving and furniture stripping
Pesticide and herbicide application
Photographic processing and printing
B. 
Procedures. The hearing for a special exception shall be held by the Zoning Board of Adjustment with mandatory attendance of the Planning Board and Conservation Commission to provide advice. In the case of any use which may be allowed by special exception in the underlying zoning district, it must be found by the ZBA, in written findings of fact, that all of the following are true:
(1) 
The proposed use will not 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) 
The proposed use will not cause a significant reduction in the long-term volume of water contained in the aquifer or in the storage capacity of the aquifer.
(3) 
The proposed use will discharge no wastewater on site other than that which is permitted under the provisions of this article.
(4) 
The proposed use complies with all other applicable sections of this article.
A. 
Any nonconforming use may continue and may be maintained, repaired, replaced, and improved, unless such use is determined to be an imminent hazard to the public health and safety by the Town Council, Health Officer or Code Enforcement Officer.
B. 
No nonconforming use may be expanded or changed to another nonconforming use. No nonconforming use may be renewed after it has been discontinued for a period of 12 months or more.
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.