A. For electric and telephone utilities, applicants for all major subdivisions shall arrange with the serving utility for front lot underground installation of the utilities' distribution supply lines and service connections and appurtenances, in accordance with the provisions of the applicable standard terms and conditions incorporated as a part of its tariff as the same are then on file with the State of New Jersey Board of Public Utility Commissioners, and shall submit to the Planning Board for its approval a map of the proposed location of the installation, together with a written instrument from each serving utility which evidences full compliance with the provisions of this subsection prior to obtaining preliminary approval. Where overhead electric or telephone distribution supply lines are present on existing streets abutting such subdivisions, approval may be granted to the applicant to supply electric and telephone service to the lots abutting the existing streets from such overhead lines or extensions. However, such connections from the utilities' overhead lines shall be installed underground.
B. In all zones, the installation of water mains, hydrants and all other appurtenances throughout the subdivision shall be as required by the Director of Public Works and the Township Engineer and shall be at the expense of the subdivider, in accordance with the terms agreed upon, in writing, between the subdivider and the Township.
C. Each two lots to which access is given by an access lane shall be served from the nearest available street water main, all to be installed in accordance with the regulations of the Water Department. Such service lines shall be laid in advance of the lane-surfacing improvements and shall be at the expense of the developer.
D. Any individual private water supply or sewage disposal system shall conform to the requirements of the Sanitary Code and the Health Administrator. The Health Administrator may require any additional tests or data that he deems necessary.
E. All the improvements required by this chapter and the matters covered by any regulations set forth in the aforesaid specifications shall be subject to the approval of the Township official having jurisdiction thereof and which official shall be notified by the developer at least 24 hours prior to the start of construction. No underground installation shall be covered until it has been inspected and approved. For subdivisions or site plans, the developer shall be required to pay to the Township inspection fees totaling 200% of the hourly base salary of the Township Engineer and professional staff multiplied by the number of hours spent by them in inspecting the project. [Amended 9-19-1980 by Ord. No. 80:30; 5-10-1988 by Ord. No. 88:22; 12-27-1995 by Ord. No. 95:45]
F. All streets which furnish access to more than two building lots shall be controlled or owned by the Township pursuant to effective dedication or conveyance, except such streets as are under the control and jurisdiction of Morris County, the State of New Jersey or an owners' association established in accordance with law. Upon completion of work of installing the required utilities and the street improvements herein specified to the satisfaction of the governing body and upon certification of such completion by the Township Engineer and Township Manager, the streets (except access lanes or private streets) shall be accepted as public streets and become a part of the official street and highway system of the Township, provided that no street shall be accepted until all construction and temporary maintenance requirements established by this chapter have been met.
G. The developer shall install or guarantee the installation of surveyor's monuments of a size and shape required by the provisions of N.J.S.A. 46:23-9.9 et seq. Such monuments shall be placed in accordance with such provisions and shall be subject to approval by the Township Engineer.
H. Performance guaranties shall be required in lieu of installation of all improvements in accordance with the procedures established in § 225-49. The performance guaranty shall include an amount equal to the estimated cost to cover the planting of shade trees to conform to the standards set forth in this chapter. The form and sufficiency of the bond shall be subject to the approval of the Planning Board Attorney, and the term shall be for the life of the developer's agreement and any extension thereof. Performance bonds shall be expressly conditioned upon the subdivider's full compliance with all Township ordinances and regulations governing the installation of improvements and utilities and faithful performance of the terms of the agreement with the Township. [Amended 5-24-1983 by Ord. No. 83:39]
I. Maintenance guaranties shall be required in a sum equal to 10% of the amount of the original bond for installation of improvements. The guaranties shall be in a form and sufficiency approved by the Planning Board Attorney. The maintenance bond shall be posted upon final release of the performance bond by the Township and shall be expressly conditioned upon the maintenance by the developer of all such improvements for a period of two years, and particularly shall guarantee the remedy of any defects in such improvements which occur during that period. The maintenance bond shall further guarantee the replacement of any shade trees found not healthy two years after planting.
J. Prior to the release of a performance guaranty, the developer shall submit as-built drawings to the Township Engineer.
(1) The as-built drawings shall contain the following:
(a) Profile elevations of the center line of roads to hundredths of a foot, at one-hundred-foot stations, clearly defining the as-built elevations versus the approved tentative elevations.
(b) Invert and rim elevations of all storm, sanitary and water lines to the nearest hundredth of a foot, clearly defining the as-built elevations versus the approved tentative elevations.
(c) Any changes which deviate from the approved tentative drawings.
(d) The as-built lengths of storm and sanitary sewer lines.
(e) A typical as-built roadway section shall be provided.
(f) Symbols denoting location of sanitary cleanouts and water valve boxes shall be provided. Also, house numbers shall be denoted.
(2) The title block shall be clearly labeled "as-built plans and profiles." The scale shall be not greater than 50 feet per inch in plan and not greater than five feet per inch in profile, unless approved by the Township Engineer.
K. Construction plans.
(1) Prior to any construction on the subdivision and subsequent to preliminary approval, construction drawings must be submitted to the Township Engineer. These drawings shall contain sufficient information to proceed with construction of utilities and layout of road systems and more specifically as follows:
(a) Center line of road data, including all bearings, distances, radii and central angles for road layout.
(b) Plan and profiles of all road systems on a scale of not greater than 50 feet to the inch horizontally and not greater than five feet to the inch vertically.
(c) Water, sanitary and storm sewers must be shown in plan and profile with accurate lengths of pipes, grades, invert elevations, rim elevations, pipe sizes, manholes, catch basins, energy dissipators and headwalls as required for construction.
(d) All construction details must be shown, including typical sections of roads, manholes, catch basins, headwalls, etc., as necessary for construction.
(e) All easements must be shown on the drawings, together with plan and profile of any utilities located within them.
(2) Construction can commence upon proper notice and receipt of construction plans signed and approved by the Township Engineer.
L. Storm drainage. [Amended 9-18-2007 by Ord. No. 2007:27]
(1) Scope and purpose.
(a) Policy statement. Flood control, groundwater recharge, and pollutant reduction through nonstructural or low-impact techniques shall be explored before relying on structural BMPs. Structural BMPs should be integrated with nonstructural stormwater management strategies and proper maintenance plans. Nonstructural strategies include both environmentally sensitive site design and source controls that prevent pollutants from being placed on the site or from being exposed to stormwater. Source control plans should be developed based upon physical site conditions and the origin, nature, and the anticipated quantity or amount of potential pollutants. Multiple stormwater management BMPs may be necessary to achieve the established performance standards for water quality, quantity, and groundwater recharge.
(b) Purpose. It is the purpose of this subsection to establish minimum stormwater management requirements and controls for major development, as defined in Subsection L(2), below.
(c) Applicability.
[1] This subsection shall be applicable to all site plans and subdivisions for the following major developments that require preliminary or final site plan or subdivision review:This subsection shall be applicable to all site plans and subdivisions for the following major developments that require preliminary or final site plan or subdivision review:
[a] Nonresidential major developments; and
[b] Aspects of residential major developments that are not preempted by the Residential Site Improvement Standards, N.J.A.C. 5:21.
[2] This subsection shall also be applicable to all major developments undertaken by the Township of Parsippany-Troy Hills.This subsection shall also be applicable to all major developments undertaken by the Township of Parsippany-Troy Hills.
(d) Compatibility with other permit and ordinance requirements. Development approvals issued for subdivisions and site plans pursuant to this subsection are to be considered an integral part of development approvals under the subdivision and site plan review process and do not relieve the applicant of the responsibility to secure required permits or approvals for activities regulated by any other applicable code, rule, act, or ordinance. In their interpretation and application, the provisions of this subsection shall be held to be the minimum requirements for the promotion of the public health, safety, and general welfare. This subsection is not intended to interfere with, abrogate, or annul any other ordinances, rule or regulation, statute, or other provision of law except that, where any provision of this subsection imposes restrictions different from those imposed by any other ordinance, rule or regulation, or other provision of law, the more restrictive provisions or higher standards shall control.Compatibility with other permit and ordinance requirements. Development approvals issued for subdivisions and site plans pursuant to this subsection are to be considered an integral part of development approvals under the subdivision and site plan review process and do not relieve the applicant of the responsibility to secure required permits or approvals for activities regulated by any other applicable code, rule, act, or ordinance. In their interpretation and application, the provisions of this subsection shall be held to be the minimum requirements for the promotion of the public health, safety, and general welfare. This subsection is not intended to interfere with, abrogate, or annul any other ordinances, rule or regulation, statute, or other provision of law except that, where any provision of this subsection imposes restrictions different from those imposed by any other ordinance, rule or regulation, or other provision of law, the more restrictive provisions or higher standards shall control.
(2) Definitions. Unless specifically defined below, words or phrases used in this subsection shall be interpreted so as to give them the meaning they have in common usage and to give this subsection its most reasonable application. The definitions below are the same as or based on the corresponding definitions in the Stormwater Management Rules at N.J.A.C. 7:8-1.2.Definitions. Unless specifically defined below, words or phrases used in this subsection shall be interpreted so as to give them the meaning they have in common usage and to give this subsection its most reasonable application. The definitions below are the same as or based on the corresponding definitions in the Stormwater Management Rules at N.J.A.C. 7:8-1.2.
COMPACTION The increase in soil bulk density.
CORE A pedestrian-oriented area of commercial and civic uses serving the surrounding municipality, generally including housing and access to public transportation.
COUNTY REVIEW AGENCY An agency designated by the County Board of Chosen Freeholders to review municipal stormwater management plans and implementing ordinance(s). The county review agency may either be:
(a) A county planning agency; or
(b) A county water resource association created under N.J.S.A. 58:16A-55.5, if the ordinance or resolution delegates authority to approve, conditionally approve, or disapprove municipal stormwater management plans and implementing ordinances.
DEPARTMENT The New Jersey Department of Environmental Protection.
DESIGNATED CENTER A State Development and Redevelopment Plan Center as designated by the State Planning Commission, such as urban, regional, town, village, or hamlet.
DESIGN ENGINEER A person professionally qualified and duly licensed in New Jersey to perform engineering services that may include, but not necessarily be limited to, development of project requirements, creation and development of project design and preparation of drawings and specifications.
DEVELOPMENT The division of a parcel of land into two or more parcels, the construction, reconstruction, conversion, structural alteration, relocation or enlargement of any building or structure, any mining excavation or landfill, and any use or change in the use of any building or other structure, or land or extension of use of land, by any person, for which permission is required under the Municipal Land Use Law, N.J.S.A. 40:55D-1 et seq. In the case of development of agricultural lands, development means: any activity that requires a state permit; any activity reviewed by the County Agricultural Board (CAB) and the State Agricultural Development Committee (SADC), and municipal review of any activity not exempted by the Right to Farm Act, N.J.S.A. 4:1C-1 et seq.
DRAINAGE AREA A geographic area within which stormwater, sediments, or dissolved materials drain to a particular receiving water body or to a particular point along a receiving water body.
ENVIRONMENTALLY CRITICAL AREAS An area or feature which is/are of significant environmental value, including but not limited to: stream corridors; natural heritage priority sites; habitat of endangered or threatened species; large areas of contiguous open space or upland forest; steep slopes; and wellhead protection and groundwater recharge areas. Habitats of endangered or threatened species are identified using the Department's Landscape Project as approved by the Department's Endangered and Nongame Species Program.
EROSION The detachment and movement of soil or rock fragments by water, wind, ice or gravity.
IMPERVIOUS SURFACE A surface that has been covered with a layer of material so that it is highly resistant to infiltration by water.
INFILTRATION The process by which water seeps into the soil from precipitation.
MAJOR DEVELOPMENT Any development that provides for ultimately disturbing one or more acres of land. Disturbance for the purpose of this rule is the placement of impervious surface or exposure and/or movement of soil or bedrock or clearing, cutting, or removing of vegetation.
MUNICIPALITY Any city, borough, town, township, or village.
NODE An area designated by the State Planning Commission concentrating facilities and activities which are not organized in a compact form.
NUTRIENT A chemical element or compound, such as nitrogen or phosphorus, which is essential to and promotes the development of organisms.
PERSON Any individual, corporation, company, partnership, firm, subdivision of this state subject to municipal jurisdiction pursuant to the Municipal Land Use Law, N.J.S.A. 40:55D-1 et seq.
POLLUTANT Any dredged spoil, solid waste, incinerator residue, filter backwash, sewage, garbage, refuse, oil, grease, sewage sludge, munitions, chemical wastes, biological materials, medical wastes, radioactive substance [except those regulated under the Atomic Energy Act of 1954, as amended (42 U.S.C. 2011 et seq.)], thermal waste, wrecked or discarded equipment, rock, sand, cellar dirt, industrial, municipal, agricultural, and construction waste or runoff, or other residue discharged directly or indirectly to the land, groundwaters or surface waters of the state, or to a domestic treatment works. "Pollutant" includes both hazardous and nonhazardous pollutants.
RECHARGE The amount of water from precipitation that infiltrates into the ground and is not evapotranspired.
SEDIMENT Solid material, mineral or organic, that is in suspension, is being transported, or has been moved from its site of origin by air, water or gravity as a product of erosion.
SITE The lot or lots upon which a major development is to occur or has occurred.
SOIL All unconsolidated mineral and organic material of any origin.
STATE DEVELOPMENT AND REDEVELOPMENT PLAN METROPOLITAN PLANNING AREA (PA1) An area delineated on the State Plan Policy Map and adopted by the State Planning Commission that is intended to be the focus for much of the state's future redevelopment and revitalization efforts.
STATE PLAN POLICY MAP The geographic application of the State Development and Redevelopment Plan's goals and statewide policies, and the official map of these goals and policies.
STORMWATER Water resulting from precipitation (including rain and snow) that runs off the land's surface, is transmitted to the subsurface, or is captured by separate storm sewers or other sewage or drainage facilities, or conveyed by snow removal equipment.
STORMWATER RUNOFF Water flow on the surface of the ground or in the storm sewers, resulting from precipitation.
STORMWATER MANAGEMENT BASIN An excavation or embankment and related areas designed to retain stormwater runoff. A stormwater management basin may either be normally dry (that is, a detention basin or infiltration basin), retain water in a permanent pool (a retention basin), or be planted mainly with wetland vegetation (most constructed stormwater wetlands).
STORMWATER MANAGEMENT MEASURE Any structural or nonstructural strategy, practice, technology, process, program, or other method intended to control or reduce stormwater runoff and associated pollutants, or to induce or control the infiltration or groundwater recharge of stormwater or to eliminate illicit or illegal nonstormwater discharges into stormwater conveyances.
WATERS OF THE STATE The ocean and its estuaries, all springs, streams, wetlands, and bodies of surface water or groundwater, whether natural or artificial, within the boundaries of the State of New Jersey or subject to its jurisdiction.
WETLANDS OR WETLAND An area that is inundated or saturated by surface water or groundwater at a frequency and duration sufficient to support, and that under normal circumstances does support, a prevalence of vegetation typically adapted for life in saturated soil conditions, commonly known as hydrophytic vegetation.
(3) General standards.
(a) Design and performance standards for stormwater management measures.
[1] Stormwater management measures for major development shall be developed to meet the erosion control, groundwater recharge, stormwater runoff quantity, and stormwater runoff quality standards in Subsection L(4). To the maximum extent practicable, these standards shall be met by incorporating nonstructural stormwater management strategies into the design. If these strategies alone are not sufficient to meet these standards, structural stormwater management measures necessary to meet these standards shall be incorporated into the design.
[2] The standards in this subsection apply only to new major development and are intended to minimize the impact of stormwater runoff on water quality and water quantity in receiving water bodies and maintain groundwater recharge. The standards do not apply to new major development to the extent that alternative design and performance standards are applicable under a regional stormwater management plan or water quality management plan adopted in accordance with Department rules.The standards in this subsection apply only to new major development and are intended to minimize the impact of stormwater runoff on water quality and water quantity in receiving water bodies and maintain groundwater recharge. The standards do not apply to new major development to the extent that alternative design and performance standards are applicable under a regional stormwater management plan or water quality management plan adopted in accordance with Department rules.
(4) Stormwater management requirements for major development.
(a) The development shall incorporate a maintenance plan for the stormwater management measures incorporated into the design of a major development in accordance with Subsection L(10), below.
(b) Stormwater management measures shall avoid adverse impacts of concentrated flow on habitat for threatened and endangered species as documented in the Department's Landscape Project or Natural Heritage Database established under N.J.S.A. 13:1B-15.147 through 15.150, particularly Helonias bullata (swamp pink) and/or Clemmys muhlnebergi (bog turtle).
(c) The following linear development projects are exempt from the groundwater recharge, stormwater runoff quantity, and stormwater runoff quality requirements of Subsection L(4)(f) and (g):
[1] The construction of an underground utility line, provided that the disturbed areas are revegetated upon completion;
[2] The construction of an aboveground utility line, provided that the existing conditions are maintained to the maximum extent practicable; and
[3] The construction of a public pedestrian access, such as a sidewalk or trail with a maximum width of 14 feet, provided that the access is made of permeable material.
(d) A waiver from strict compliance from the groundwater recharge, stormwater runoff quantity, and stormwater runoff quality requirements of Subsection L(4)(f) and (g) may be obtained for the enlargement of an existing public roadway or railroad or the construction or enlargement of a public pedestrian access, provided that the following conditions are met:
[1] The applicant demonstrates that there is a public need for the project that cannot be accomplished by any other means;
[2] The applicant demonstrates through an alternatives analysis that, through the use of nonstructural and structural stormwater management strategies and measures, the option selected complies with the requirements of Subsection L(4)(f) and (g) to the maximum extent practicable;
[3] The applicant demonstrates that, in order to meet the requirements of Subsection L(4)(f) and (g) existing structures currently in use, such as homes and buildings, would need to be condemned; and
[4] The applicant demonstrates that it does not own or have other rights to the areas, including the potential to obtain through condemnation lands not falling under Subsection L(4)(d)[3] above within the upstream drainage area of the receiving stream, that would provide additional opportunities to mitigate the requirements of Subsection L(4)(f) and (g) that were not achievable on site.
(e) Nonstructural stormwater management strategies.
[1] To the maximum extent practicable, the standards in Subsection L(4)(f) and (g) shall be met by incorporating nonstructural stormwater management strategies set forth in Subsection L(4)(e) into the design. The applicant shall identify the nonstructural measures incorporated into the design of the project. If the applicant contends that it is not feasible for engineering, environmental, or safety reasons to incorporate any nonstructural stormwater management measures identified in Subsection L(4)(e)[2] below into the design of a particular project, the applicant shall identify the strategy considered and provide a basis for the contention.
[2] Nonstructural stormwater management strategies incorporated into site design shall:
[a] Protect areas that provide water quality benefits or areas particularly susceptible to erosion and sediment loss;
[b] Minimize impervious surfaces and break up or disconnect the flow of runoff over impervious surfaces;
[c] Maximize the protection of natural drainage features and vegetation;
[d] Minimize the decrease in the time of concentration from preconstruction to postconstruction. "Time of concentration" is defined as the time it takes for runoff to travel from the hydraulically most distant point of the watershed to the point of interest within a watershed;
[e] Minimize land disturbance including clearing and grading;
[f] Minimize soil compaction;
[g] Provide low-maintenance landscaping that encourages retention and planting of native vegetation and minimizes the use of lawns, fertilizers and pesticides;
[h] Provide vegetated open-channel conveyance systems discharging into and through stable vegetated areas;
[i] Provide other source controls to prevent or minimize the use or exposure of pollutants at the site, in order to prevent or minimize the release of those pollutants into stormwater runoff. Such source controls include, but are not limited to:
[i] Site design features that help to prevent accumulation of trash and debris in drainage systems, including features that satisfy Subsection L(4)(e)[3] below;
[ii] Site design features that help to prevent discharge of trash and debris from drainage systems;
[iii] Site design features that help to prevent and/or contain spills or other harmful accumulations of pollutants at industrial or commercial developments; and
[iv] When establishing vegetation after land disturbance, applying fertilizer in accordance with the requirements established under the Soil Erosion and Sediment Control Act, N.J.S.A. 4:24-39 et seq., and implementing rules.
[3] Site design features identified under Subsection L(4)(e)[2][i][ii], above shall comply with the following standard to control passage of solid and floatable materials through storm drain inlets. For purposes of this paragraph, "solid and floatable materials" means sediment, debris, trash, and other floating, suspended, or settleable solids. For exemptions to this standard see Subsection F(4)(e)[3][c], below.
[a] Design engineers shall use either of the following grates whenever they use a grate in pavement or another ground surface to collect stormwater from that surface into a storm drain or surface water body under that grate: the New Jersey Department of Transportation (NJDOT) bicycle safe grate, which is described in Chapter 2.4 of the NJDOT Bicycle Compatible Roadways and Bikeways Planning and Design Guidelines (April 1996); or a different grate, if each individual clear space in that grate has an area of no more than seven square inches, or is no greater than two inches across the smallest dimension. Examples of grates subject to this standard include grates in grate inlets, the grate portion (non-curb-opening portion) of combination inlets, grates on storm sewer manholes, ditch grates, trench grates, and grates of spacer bars in slotted drains. Examples of ground surfaces include surfaces of roads (including bridges), driveways, parking areas, bikeways, plazas, sidewalks, lawns, fields, open channels, and stormwater basin floors.
[b] Whenever design engineers use a curb-opening inlet, the clear space in that curb opening (or each individual clear space, if the curb opening has two or more clear spaces) shall have an area of no more than seven square inches, or be no greater than two inches across the smallest dimension.
[c] This standard does not apply:
[i] Where the review agency determines that this standard would cause inadequate hydraulic performance that could not practicably be overcome by using additional or larger storm drain inlets that meet these standards;
[ii] Where flows from the water quality design storm as specified in Subsection L(4)(g)[1] are conveyed through any device (e.g., end-of-pipe netting facility, manufactured treatment device, or a catch basin hood) that is designed, at a minimum, to prevent delivery of all solid and floatable materials that could not pass through one of the following:
[A] A rectangular space 4 5/8 inches long and 1 1/2 inches wide (this option does not apply for outfall netting facilities); or
[B] A bar screen having a bar spacing of 0.5 inches.
[iii] Where flows are conveyed through a trash rack that has parallel bars with one-inch spacing between the bars, to the elevation of the water quality design storm as specified in Subsection L(4)(g)[1], below; or
[iv] Where the New Jersey Department of Environmental Protection determines, pursuant to the New Jersey Register of Historic Places Rules at N.J.A.C. 7:4-7.20, that action to meet this standard is an undertaking that constitutes an encroachment or will damage or destroy the New Jersey Register listed historic property.
[4] Any land area used as a nonstructural stormwater management measure to meet the performance standards in Subsection L(4)(f) and (g) shall be dedicated to a government agency, subjected to a conservation restriction filed with the appropriate county clerk's office, or subject to an approved equivalent restriction that ensures that measure or an equivalent stormwater management measure approved by the reviewing agency is maintained in perpetuity.
[5] Guidance for nonstructural stormwater management strategies is available in the New Jersey Stormwater Best Management Practices Manual. The BMP Manual may be obtained from the address identified in Subsection L(7), or found on the Department's Web site at www.njstormwater.com.
(f) Erosion control, groundwater recharge and runoff quality standards.
[1] This subsection contains minimum design and performance standards to control erosion, encourage and control infiltration and groundwater recharge, and control stormwater runoff quantity impacts of major development.This subsection contains minimum design and performance standards to control erosion, encourage and control infiltration and groundwater recharge, and control stormwater runoff quantity impacts of major development.
[a] The minimum design and performance standards for erosion control are those established under the Soil Erosion and Sediment Control Act, N.J.S.A. 4:24-39 et seq., and implementing rules.
[b] The minimum design and performance standards for groundwater recharge are as follows:
[i] The design engineer shall, using the assumptions and factors for stormwater runoff and groundwater recharge calculations at Subsection L(5), below, either:
[A] Demonstrate through hydrologic and hydraulic analysis that the site and its stormwater management measures maintain 100% of the average annual preconstruction groundwater recharge volume for the site; or
[B] Demonstrate through hydrologic and hydraulic analysis that the increase of stormwater runoff volume from preconstruction for the two-year storm is infiltrated.
[ii] This groundwater recharge requirement does not apply to projects within the urban redevelopment area, or to projects subject to Subsection L(4)(f)[1][a][iii] below.
[iii] The following types of stormwater shall not be recharged:
[A] 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-approved remedial action work plan or landfill closure plan and areas with high risks for spills of toxic materials, such as gas stations and vehicle maintenance facilities; and
[B] 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.
[iv] The design engineer shall assess the hydraulic impact on the groundwater table and design the site so as to avoid adverse hydraulic impacts. Potential adverse hydraulic impacts include, but are not limited to, exacerbating a naturally or seasonally high water table so as to cause surficial 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.
[c] In order to control stormwater runoff quantity impacts, the design engineer shall, using the assumptions and factors for stormwater runoff calculations at Subsection F(5), below, complete one of the following:
[i] Demonstrate through hydrologic or hydraulic analysis that for stormwater leaving the site, postconstruction runoff hydrographs for the two-, ten-, and one-hundred-year storm events do not exceed, at any point in time, the preconstruction runoff hydrographs for the same storm events;
[ii] Demonstrate through hydrologic or hydraulic analysis that there is no increase, as compared to the preconstruction condition, in the peak runoff rates of stormwater leaving the site for the two-, ten-, and one-hundred-year storm events and that the increased volume or change in timing of stormwater runoff will not increase flood damage at or downstream of the site. This analysis shall include the analysis of impacts of existing land uses and projected land uses assuming full development under existing zoning and land use ordinances in the drainage area;
[iii] Design stormwater management measure so that the postconstruction peak runoff rates for the two-, ten-, and one-hundred-year storm events are 50%, 75%, and 80%, respectively, of the preconstruction peak runoff rates. The percentages apply only to the postconstruction stormwater runoff that is attributable to the portion of the site on which the proposed development or project is to be constructed. The percentages shall not be applied to postconstruction stormwater runoff into tidal flood hazard areas if the increased volume of stormwater runoff will not increase flood damages below the point of discharge.
(g) Stormwater runoff quality standards.
[1] Stormwater management measures shall be designed to reduce the postconstruction load of total suspended solids (TSS) in stormwater runoff by 80% of the anticipated load from the developed site, expressed as an annual average. Stormwater management measures shall only be required for water quality control if an additional 1/4 acre of impervious surface is being proposed on a development site. The requirement to reduce TSS does not apply to any stormwater runoff in a discharge regulated under a numeric effluent limitation for TSS imposed under the New Jersey Pollution Discharge Elimination System (NJPDES) rules, N.J.A.C. 7:14A, or in a discharge specifically exempt under a NJDES permit from this requirement. The water quality design storm is 1.25 inches of rainfall in two hours. Water quality calculations shall take into account the distribution of rain from the water quality design storm, as reflected in Table 1. The calculation of the volume of runoff may take into account the implementation of nonstructural and structural stormwater management.
