N.J. Admin. Code § 7:8-5.4

Current through Register Vol. 56, No. 23, December 2, 2024

Section 7:8-5.4 - Groundwater recharge standards

(a) This section contains minimum design and performance standards for groundwater recharge.

(b) The minimum design and performance standards for groundwater recharge, are as follows:

1. The design engineer shall, using the assumptions and factors for stormwater runoff and groundwater recharge calculations at N.J.A.C. 7:8-5.7, either:

i. Demonstrate through hydrologic and hydraulic analysis that the site and its stormwater management measures maintain 100 percent of the average annual pre-construction groundwater recharge volume for the site; or

ii. Demonstrate through hydrologic and hydraulic analysis that the increase of stormwater runoff volume from pre-construction to post-construction for the projected two-year storm, as defined and determined pursuant to N.J.A.C. 7:8-5.7(d), is infiltrated.

2. This groundwater recharge requirement does not apply to projects within the "urban redevelopment area," or to projects subject to (b)3 below.

3. The following types of stormwater shall not be recharged:

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 a remedial action work plan approved pursuant to the Administrative Requirements for the Remediation of Contaminated Sites rules, N.J.A.C. 7:26C, or a Department approved landfill closure plan; 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, which 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.

N.J. Admin. Code § 7:8-5.4

Special amendment, R.2009 d.361, effective 11/4/2009 (to expire May 4, 2011).
See: 41 N.J.R. 4467(a).
In (a)2iii(1), substituted a semicolon for a comma following "applied", double quotation marks for single quotation marks around "reportable quantities" and "a" for "Department approved" preceding "remedial", and inserted "approved pursuant to the Administrative Requirements for the Remediation of Contaminated Sites rules, N.J.A.C. 7:26C,".
Administrative correction.
See: 42 N.J.R. 778(a).
Readoption of special amendment, R.2011 d.251, effective 9/8/2011.
See: 43 N.J.R. 1077(a), 43 N.J.R. 2581(b).
Provisions of R.2009 d.361 readopted with changes incorporated at 42 N.J.R. 778(a).
Amended by R.2020 d.003, effective 3/2/2020 (operative March 2, 2021).
See: 50 N.J.R. 2375(a), 52 N.J.R. 402(a).
Section was "Erosion control, groundwater recharge and runoff quantity standards". Rewrote the section.

Amended by 55 N.J.R. 1385(b), effective 7/17/2023