New Jersey Administrative Code
Title 7 - ENVIRONMENTAL PROTECTION
Chapter 45 - RULES FOR THE REVIEW ZONE OF THE DELAWARE AND RARITAN CANAL STATE PARK
Subchapter 8 - STORMWATER RUNOFF AND WATER QUALITY IMPACT REVIEW
Section 7:45-8.5 - Specific recharge standards
Universal Citation: NJ Admin Code 7:45-8.5
Current through Register Vol. 56, No. 24, December 18, 2024
(a) The minimum design and performance standards for groundwater recharge are as follows:
1. The design engineer shall either:
i. Demonstrate through hydrologic and
hydraulic analysis that the site and its stormwater management measures
maintain 100 percent of the average annual preconstruction groundwater recharge
volume for the site; or
ii.
Demonstrate through hydrologic and hydraulic analyses that any increase of
stormwater runoff volume from pre-construction to post-construction for the
two-year storm is infiltrated.
2. The groundwater recharge requirement does
not apply to redevelopment projects that are subject to the following types of
existing stormwater:
i. Stormwater from areas
of high pollutant loading. High pollutant loading areas are areas in industrial
and commercial developments where solvents and/or petroleum products are
loaded/unloaded, stored, or applied, areas where pesticides are loaded/unloaded
or stored; areas where hazardous materials are expected to be present in
greater than "reportable quantities" as defined by the United States
Environmental Protection Agency (EPA) at
40 CFR
302.4; areas where recharge would be
inconsistent with Department or licensed site remediation professional approved
remedial action work plans or landfill closure plans and areas with high risks
for spills of toxic materials, such as gas stations and vehicle maintenance
facilities; and
ii. Industrial
stormwater exposed to "source material." "Source material" means any
material(s) or machinery, located at an industrial facility that is directly or
indirectly related to process, manufacturing or other industrial activities,
that could be a source of pollutants in any industrial stormwater discharge to
groundwater. Source materials include, but are not limited to, raw materials;
intermediate products; final products; waste materials; by-products; industrial
machinery and fuels, and lubricants, solvents, and detergents that are related
to process, manufacturing, or other industrial activities that are exposed to
stormwater.
3. The
design engineer shall assess the hydraulic impact on the groundwater table and
design the site so as to avoid all material, measurable adverse hydraulic
impacts to the maximum extent possible. Potential adverse hydraulic impacts
include, but are not limited to, exacerbating a naturally or seasonally high
water table so as to cause surface ponding, flooding of basements, or
interference with the proper operation of subsurface sewage disposal systems
and other subsurface structures in the vicinity or downgradient of the
groundwater recharge area.
(b) Guidance on the analyses in (a)1 above is provided in the New Jersey Stormwater Best Practices Manual for stormwater runoff and groundwater recharge calculations.
Disclaimer: These regulations may not be the most recent version. New Jersey may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google
Privacy Policy and
Terms of Service apply.
