Glossary¶
This glossary is now limited to source-backed core terms that are actively used across the enrolled green-guides pages. The goal is portability and citation discipline, not a long narrative dictionary with unsupported shorthand.
Structured citation evidence for this page lives in the sibling claim manifest.
Core Terms¶
Major Development : Under the live N.J.A.C. 7:8 source set, major development keeps the one-acre land-disturbance threshold and the one-quarter-acre impervious-surface threshold, with the updated rule text also clarifying reconstruction and phased-development handling. : Appears in: Regulatory Explorer, Design Workflow
Green Infrastructure (GI) : In the live rule text, green infrastructure means a stormwater management measure that manages stormwater close to its source by infiltration into subsoil, filtration by vegetation or soil, or storage for reuse. : Appears in: Regulatory Explorer, BMP Library, Design Workflow
Water Quality Design Storm (WQDS) : The Water Quality Design Storm remains 1.25 inches of rainfall in two hours. : Appears in: Regulatory Explorer, Design Workflow, BMP Library
Water Quality Volume (WQV) : WQV is the runoff-quality design volume derived from the Water Quality Design Storm and the contributing drainage area. : Appears in: Regulatory Explorer, Design Workflow, BMP Library
Volumetric Reduction : In the live 2026 source set, volumetric reduction is the codified retention-based standard in N.J.A.C. 7:8-5.6(d), supported by BMP Manual Chapter 14. : Appears in: Regulatory Explorer, Design Workflow, BMP Library
Hydrologic Soil Group (HSG) : HSG remains one of the screening inputs used to evaluate runoff and infiltration behavior, but the enrolled source set does not treat mapping alone as final design evidence for infiltration BMPs. : Appears in: Engineering Constraints, Design Workflow
Ksat / Design Permeability : Field-tested hydraulic conductivity supports infiltration design, and the credited design permeability is governed by the Chapter 12 framework rather than by raw field values alone. : Appears in: Engineering Constraints, Design Workflow, BMP Library
Seasonal High Water Table (SHWT) : SHWT is a design control for infiltration-based BMPs and stays tied to the field investigation record rather than desktop-only mapping. : Appears in: Engineering Constraints, BMP Library, Design Workflow
Groundwater Mounding : Groundwater mounding is the temporary hydraulic response that must be checked when the design infiltrates stormwater into subsoil. : Appears in: Engineering Constraints, Design Workflow, BMP Library
Underdrain : The presence or absence of an underdrain changes how several BMP chapters can be used for recharge and other infiltration-dependent claims. : Appears in: BMP Library, Engineering Constraints
This glossary should grow only when the term can be anchored to the live Sources/ evidence layer and an enrolled claim manifest.