Source: https://ecode360.com/34861035
Timestamp: 2020-04-01 21:45:10
Document Index: 659498765

Matched Legal Cases: ['§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 1', '§ 1', '§ 1', '§ 2', '§ 3', '§ 4', '§ 5', '§ 6', '§ 7', '§ 8', '§ 9', '§ 10', '§ 11']

City of Wildwood, NJ Stormwater Management
§ 25-1 MUNICIPAL SEPARATE STORM SEWER SYSTEMS (MS4)
§ 25-1.1 Spilling, Dumping or Disposal of Materials Other Than Stormwater Prohibited.
§ 25-1.2 Illicit Connections Prohibited.
§ 25-2 STORMWATER CONTROL.
§ 25-2.1 Scope and Purpose.
§ 25-2.2 Definitions.
§ 25-2.3 General Standards.
§ 25-2.4 Stormwater Management Requirements for Major Development.
§ 25-2.5 Calculation of Stormwater Runoff and Groundwater Recharge.
§ 25-2.6 Standards for Structural Stormwater Management Measures.
§ 25-2.7 Sources for Technical Guidance.
§ 25-2.8 Safety Standards for Stormwater Management Basins.
§ 25-2.9 Requirements for a Site Development Stormwater Plan.
§ 25-2.10 Maintenance and Repair.
§ 25-2.11 Penalties.
Chapter 25 Stormwater Management
[Ord. No. 649-05, §§ 1—5]
Shall mean a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains) that is owned or operated by the City of Wildwood or other public body, and is designed and used for collecting and conveying stormwater. Note: In municipalities with combined sewer systems, which are sewer systems that are designed to carry sanitary sewage at all times and to collect and transport stormwater from streets and other sources.
Prohibited Conduct. The spilling, dumping, or disposal of materials other than stormwater to the municipal separate storm sewer system operated by the City of Wildwood is prohibited. The spilling, dumping, or disposal of materials other than stormwater in such a manner as to cause the discharge of pollutants to the municipal separate storm sewer system is also prohibited.
Enforcement. The provisions of this subsection shall be enforced by the Police Department of the City of Wildwood and other authorized enforcement officials of the City of Wildwood.
Violations and Penalties. Any person(s) who is found to be in violation of the provisions of this subsection shall be subject to a fine not to exceed five hundred ($500.00) dollars for each offense.
[Ord. No. 648-05, §§ 1—4]
Definitions. For the purpose of this subsection, the following terms, phrases, words and their derivations shall have the meanings stated herein unless their use in the text of this subsection clearly demonstrates a different meaning. When not inconsistent with the context, words used in the present tense include the future, words used in the plural number include the singular number, and words used in the singular number include the plural number. The word "shall" is always mandatory and not merely directory. The definitions below are the same as or based on corresponding definitions in the New Jersey Pollutant Discharge Elimination System (NJPDES) rules at N.J.A.C. 7:14A-1.2.
Shall mean any physical or nonphysical connection that discharges domestic sewage, non-contact cooling water, process wastewater, or other industrial waste (other than stormwater) to the municipal separate storm sewer system operated by the City of Wildwood, unless that discharge is authorized under a NJPDES permit other than the Tier A Municipal Stormwater General Permit (NJPDES Permit Number NJ0141852). Nonphysical connections may include, but are not limited to, leaks, flows, or overflows into the municipal separate storm sewer system.
Shall mean nondomestic waste, including, but not limited to, those pollutants regulated under Section 307(a), (b), or (c) of the Federal Clean Water Act (33 U.S.C. S1317(a), (b), or (c)).
Shall mean a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains) that is owned or operated by the City of Wildwood or other public body, and is designed and used for collecting and conveying stormwater. Note: In municipalities with combined sewer systems, add the following: "MS4s do not include combined sewer systems, which are sewer systems that are designed to carry sanitary sewage at all times and to collect and transport stormwater from streets and other sources."
Shall mean a permit issued by the New Jersey Department of Environmental Protection to implement the New Jersey Pollutant Discharge Elimination System (NJPDES rules at N.J.A.C. 7:14A).
Prohibited Conduct. No person shall discharge or cause to be discharged through an illicit connection to the municipal separate storm sewer system operated by the City of Wildwood any domestic sewage, non-contact cooling water, process wastewater, or other industrial waste (other than stormwater).
[Ord. No. 666-06, § 1]
Purpose. It is the purpose of this chapter to establish minimum stormwater management requirements and controls for "major development", as defined in subsection 25-2.2.
This chapter shall also be applicable to all major developments undertaken by the City of Wildwood.
Compatibility with Other Permit and Ordinance Requirements. Development approvals issued for subdivisions and site plans pursuant to this chapter are to be considered an integral part of development approvals under the subdivisions 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 chapter shall be held to be the minimum requirements for the promotion of the public health, safety, and general welfare. This chapter 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 chapter 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.
[Ord. No. 666-06, § 2]
Unless specifically defined below, words or phrases used in this chapter shall be interpreted so as to give them the meaning they have in common usage and to give this chapter 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, unless modified specifically for the City of Wildwood:
Shall mean the division of a parcel of land into two (2) 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.
Shall mean any "development" that provides for ultimately disturbing one (1) or more acres of land, or more than ten thousand (10,000) square feet of new impervious coverage. 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.
Shall mean the City of Wildwood.
Shall mean any individual, corporation, company, partnership, firm, association, the City of Wildwood, or political subdivision of this State subject to municipal jurisdiction pursuant to the Municipal Land Use Law, N.J.S.A. 40:55D-1 et seq.
Shall mean 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 discharge directly or indirectly to the land, ground waters, or surface waters of the state, or to a domestic treatment works. "Pollutant" includes both hazardous and nonhazardous pollutants.
Shall mean 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).
Shall mean 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 non-stormwater discharge into stormwater conveyances.
Shall mean a zone designated by the New Jersey Enterprises Zone Authority pursuant to the New Jersey Urban Enterprise Zone Act, N.J.S.A. 52:27H-60 et seq.
Designated as Urban Coordinating Council Empowerment Neighborhoods
[Ord. No. 666-06, § 3]
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 25-2.4. 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.
The standards in this chapter 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 stormwater management requirements within this chapter, as they relate to "major development" supersede other design requirements stipulated in the City Code, including but not limited to the following sections:
Section 502, Drainage.
Section 804, Submission of preliminary major subdivision plats and preliminary major site plans.
Section 805, Submission of final major subdivision plats and final major site plans.
[Ord. No. 666-06, § 4]
The development shall incorporate a maintenance plan for the stormwater management measures incorporated into the design of a major development in accordance with subsection 25-2.10.
The following linear development projects are exempt from the groundwater recharge, stormwater runoff quantity, and stormwater runoff quality requirements of subsection 25-2.4f and g.
The construction of a public pedestrian access, such as a sidewalk or trail with a maximum width of fourteen (14) feet, provided that the access is made of permeable material.
A waiver from strict compliance from the groundwater recharge, stormwater runoff quantity, and stormwater runoff quality requirements of subsection 25-2.4f 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:
The applicant demonstrates through an alternatives analysis, that through the use or nonstructural and structural stormwater management strategies and measures, the option selected complies with the requirements of subsection 25-2.4f and g to the maximum extent practicable;
The applicant demonstrates that, in order to meet the requirements of subsection 25-2.4f and g, existing structures currently in use, such as homes and buildings, would need to be condemned; and
The applicant demonstrates that it does not own or have other rights to area, including the potential to obtain through condemnation lands not falling under subsection 25-2.4d3 above within the upstream drainage area of the receiving stream, that would provide additional opportunities to mitigate the requirements of subsection 25-2.4f and g that were not achievable on-site.
To the maximum extent practicable, the standards in subsection 25-2.4f and g shall be met by incorporating nonstructural stormwater management strategies set forth at subsection 25-2.4e 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 paragraph 2 below into the design of a particular project, the applicant shall identify the strategy considered and provide a basis for the contention.
Site design features that help to prevent accumulation of trash and debris in drainage systems, including features that satisfy subsection 25-2.4e3 below;
Site design features identified under subsection 25-2.4e2(i)(2) 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 25-4.2e3(c) below.
A different grate, if each individual clear space in that grate has an area of no more than seven (7.0) square inches, or is no greater than one-half (0.5) inch 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.
Where flows from the water quality design storm as specified in subsection 25-2.4g1 are conveyed through any device (e.g., end of pipe netting facility, manufactured treatment device, or a catch basin hood) that is deigned, at a minimum, to prevent delivery of all solid and floatable materials that could not pass through one of the following:
A rectangular space four and five-eights (4 5/8) inches long and one and one-half (1 1/2) inches wide (this option does not apply for outfall netting facilities); or
A bar screen having a bar spacing of one-half (0.5) inch.
Where flows are conveyed through a trash rack that has parallel bars with one (1) inch spacing between the bars, to the elevation of the water quality design storm as specified in subsection 25-2.4g1; or
Any land area used as a nonstructural stormwater management measure to meet the performance standards in subsection 24-2.4f and g shall be dedicated to a government agency, subject 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.
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 25-2.7, or found on the Department's website at www.njstormwater.org.
The design engineer shall, using the assumptions and factors for stormwater runoff and groundwater recharge calculations at subsection 25-2.5, either:
Demonstrate through hydrologic and hydraulic analysis that the site and its stormwater management measures maintain one hundred (100%) percent of the average annual preconstruction groundwater recharge volume for the site; or
Demonstrate through hydrologic and hydraulic analysis that the increase of stormwater runoff volume from preconstruction to post-construction for the 2-year storm is infiltrated.
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
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.
In order to control stormwater runoff quantity impacts, the design engineer shall, using the assumptions and factors for stormwater runoff calculations at subsection 25-2.5, complete one (1) of the following:
Demonstrate through hydrologic and hydraulic analysis that for stormwater leaving the site, post-construction run-off hydrographs for the 2-, 10-, and 100-year storm events do not exceed, at any point in time, the preconstruction runoff hydrographs for the same storm events;
Demonstrate through hydrologic and 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 2-, 10-, and 100-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;
Design stormwater management measures so that the post-construction peak runoff rates for the 2-, 10-, and 100-year storm events are 50, 75 and 80 percent, respectively, of the pre-construction peak runoff rates. The percentages apply only to the post-construction 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 post-construction stormwater runoff into tidal flood hazard areas if the increased volume of stormwater runoff will not increase flood damage below the point of discharge; or
Any application for a new agricultural development that meets the definition of major development at subsection 25-2.2 shall be submitted to the appropriate Soil Conservation District for review and approval in accordance with the requirements of this section and any applicable Soil Conservation guidelines for stormwater runoff quantity and erosion control. For the purposes of this section, "agricultural development" means land uses normally associated with the production of food, fiber and livestock for sale. Such uses do not include the development of land for the processing or sale of food and the manufacturing of agriculturally related products.
Stormwater management measures shall be designed to reduce the post-construction load of total suspended solids (TSS) in stormwater runoff by eighty (80%) percent of the anticipated load from the development site, expressed as an annual average. Stormwater management measures shall only be required for water quality control if an additional one-quarter (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 NJPDES permit from this requirement. The water quality design storm is one and one-quarter (1.25) inches of rainfall in two (2) 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 measures.
For purposes of TSS reduction calculations, Table 2 below presents the presumed removal rates for certain BMPs designed in accordance with the New Jersey Stormwater Best Management Practices Manual. The BMP Manual may be obtained from the address identified in subsection 25-2.7, or found on the Department's website at www.njstormwater.org. The BMP Manual and other sources of technical guidance are listed in subsection 25-2.7. TSS reduction shall be calculated based on the removal rates for the BMPs in Table 2 below. Alternative removal rates and methods of calculating removal rates may be used if the design engineer provides documentation demonstrating the capability of these alternative rates and methods to the review agency. A copy of any approved alternative rate or method of calculating the removal rate shall be provided to the Department at the following address: Division of Watershed Management, New Jersey Department of Environmental Protection, PO Pox 418, Trenton, New Jersey, 08625-0418.
If more than one (1) BMP in series is necessary to achieve the required eighty (80%) percent TSS reduction for a site, the applicant shall utilize the following formula to calculate TSS reduction:
See subsection 25-2.6c
If there is more than one (1) on-site drainage area, the eighty (80%) percent TSS removal rate shall apply to each drainage area, unless the runoff from the subareas converge on site in which case the removal rate can be demonstrated through a calculation using a weighted average.
Stormwater management measures shall also be designed to reduce, to the maximum extent feasible, the post-construction nutrient load of the anticipated load from the developed site in stormwater runoff generated from the water quality design storm. In achieving reduction of nutrients to the maximum extent feasible, the design of the site shall include nonstructural strategies and structural measures that optimize nutrient removal while still achieving the performance standards in subsection 25-2.4f and g.
Additional information and examples are contained in the New Jersey Stormwater Best Management Practices Manual, which may be obtained from the address identified in subsection 25-2.7.
The applicant shall preserve and maintain a special water resource protection area in accordance with one (1) of the following:
Encroachment within the designated special water resource protection area under paragraph (1) above shall only be allowed where previous development or disturbance has occurred (for example, active agricultural use, parking area or maintained lawn area). The encroachment shall only be allowed where applicant demonstrates that the functional value and overall condition of the special water resource protection area will be maintained to the maximum extent practicable. In no case shall the remaining special water resource protection area be reduced to less than one hundred fifty (150) feet as measured perpendicular to the top of bank of the waterway or centerline of the waterway where the bank is undefined. All encroachments proposed under this paragraph shall be subject to review and approval by the Department.
If stormwater discharged outside of and flowing through the special water resource protection area cannot comply with the Standard for Off-Site Stability in the "Standards for Soil Erosion and Sediment Control in New Jersey." Established under the Soil Erosion and Sediment Control Act, N.J.S.A. 4:24-39 et seq., then the stabilization measures in accordance with the requirements of the above standards may be placed within the special water resource protection area, provided that:
Stabilization measures shall not be placed within one hundred fifty (150) feet of the Category One waterway;
Stormwater associated with discharges allowed by this section shall achieve a ninety-five (95%) percent TSS post-construction removal rate;
The encroachment shall only be allowed where the applicant demonstrates that the functional value and overall condition of the space water resource protection area will be maintained to the maximum extent practicable;
A stream corridor protection plan may be developed by a regional stormwater management planning committee as an element of a regional stormwater management plan, or by a municipality through an adopted municipal stormwater management plan. If a stream corridor protection plan for a waterway subject to subsection 25-2.4g8 has been approved by the Department of Environmental Protection, then the provisions of the plan shall be the applicable special water resource protection area requirements for that waterway. A stream corridor protection plan for a waterway subject to subsection 25-2.4g8 shall maintain or enhance the current functional value and overall condition of the special water resource protection area as defined in paragraph g8(a)(1) above. In no case shall a stream corridor protection plan allow the reduction of the Special Water Resource Protection Area to less than one hundred fifty (150) feet as measured perpendicular to the waterway subject to this subsection.
Paragraph g8 does not apply to the construction of one (1) individual single family dwelling that is not part of a larger development on a lot receiving preliminary or final subdivision approval on or before February 2, 2004, provided that the construction begins on or before February 2, 2009.
[Ord. No. 666-06, § 5]
The design engineer shall calculate runoff using one (1) of the following methods:
For the purpose of calculating runoff coefficients and groundwater recharge, there is a presumption that the preconstruction condition of a site or portion thereof is a wooded land use with good hydrologic condition. The term ''runoff coefficient" applies to both the NRCS methodology at subsection 25-2.5a1(a) and the Rational and Modified Rational Methods at subsection 25-2.5a1(b). A runoff coefficient or a groundwater recharge land cover for an existing condition may be used on all or a portion of the site if the design engineer verifies that the hydrologic condition has existed on the site or portion of the site for at least five (5) years without interruption prior to the time of application. If more than one (1) land cover have existed on the site during the five (5) years immediately prior to the time of application, the land cover with the lowest runoff potential shall be used for the computations. In addition, there is the presumption that the site is in good hydrologic condition (if the land use type is pasture, lawn, or park), with good cover (if the land use type is woods), or with good hydrologic condition and conservation treatment (if the land use type is cultivation).
The New Jersey Geological Survey Report GSR - 32 A Method for Evaluating Groundwater Recharge Areas in New Jersey, incorporated herein by reference as amended and supplemented. Information regarding the methodology is available from the New Jersey Stormwater Best Management Practices Manual; at http://www.state.nj.us/dep/njgs/; or at New Jersey Geological Survey, 29 Arctic Parkway, P.O. Box 427 Trenton, New Jersey 08625-0427; (609) 984-6587.
[Ord. No. 666-06, § 6]
Structural stormwater management measures shall be designed to take into account the existing site conditions, including, for example, environmentally critical areas, wetlands; flood-prone areas; slopes; depth to seasonal high water table; soil type; permeability and texture; drainage area and drainage patterns; and the presence of solution-prone carbonate rocks (limestone).
Structural stormwater management measures shall be designed to minimize maintenance, facilitate maintenance and repairs, and ensure proper functioning. Trash racks shall be installed at the intake to the outlet structure as appropriate, and shall have parallel bars with one (1) inch spacing between the bars to the elevation of the water quality design storm. For elevations higher than the water quality design storm, the parallel bars at the outlet structure shall be spaced no greater than one-third (1/3) the width of the diameter of the orifice or one-third (1/3) the width of the weir, with a minimum spacing between bars of one (1) inch and a maximum spacing between bars of six (6) inches. In addition, the design of trash racks must comply with the requirements of subsection 25-2.8d.
At the intake to the outlet from the stormwater management basin, the orifice size shall be a minimum of two and one-half (2 1/2) inches in diameter.
Stormwater management basins shall be designed to meet the minimum safety standards for stormwater management basins at subsection 25-2.8.
Stormwater management measure guidelines are available in the New Jersey Stormwater Best Management Practices Manual. Other stormwater management measures may be utilized provided the design engineer demonstrates that the proposed measure and its design will accomplish the required water quantity, groundwater recharge and water quality design and performance standards established by subsection 25-2.4 of this chapter.
Manufactured treatment devices may be used to meet the requirements of subsection 25-2.4 of this chapter, provided the pollutant removal rates are verified by the New Jersey Corporation for Advanced Technology and certified by the Department.
[Ord. No. 666-06, § 7]
Technical guidance for stormwater management measures can be found in the documents listed at paragraphs 1 and 2 below, which are available from Maps and Publications, New Jersey Department of Environmental Protection, 428 East State Street, P.O. Box 420, Trenton, New Jersey 08625; telephone (609) 777-1038.
[Ord. No. 666-06, § 8]
This section sets forth requirements to protect public safety though the proper design and operation of stormwater management basins. This section applies to any new stormwater management basin.
The trash rack shall have parallel bars, with no greater than six (6) inch spacing between the bars.
The average velocity of flow through a clean trash rack is not to exceed two and one-half (2.5) feet per second under the full range of stage and discharge. Velocity is to be computed on the basis of the net area of opening through the rack.
The trash rack shall be constructed and installed to be rigid, durable, and corrosion resistant, and shall be designed to withstand a perpendicular live loading of three hundred (300) lbs./ft. sq.
The overflow grate spacing shall be no less than two (2) inches across the smallest dimension.
The overflow grate shall be constructed and installed to be rigid, durable, and corrosion resistant, and shall be designed to withstand a perpendicular live loading of three hundred (300) lbs./ft. sq.
If a stormwater management basin has an outlet structure, escape provisions shall be incorporated in or on the structure. With the prior approval of the reviewing agency identified in subsection 25-2.8c a freestanding outlet structure may be exempted from this requirement.
Safety ledges shall be constructed on the slopes of all new stormwater management basins having a permanent pool of water deeper than two and one-half (2 1/2) feet. Such safety ledges shall be comprised of two (2) steps. Each step shall be four (4) to six (6) feet in width. One (1) step shall be located approximately two and one-half (2 1/2) feet below the permanent water surface, and the second step shall be located one (1) to one and one-half (1 1/2) feet above the permanent water surface. See subsection 25-2.8d for an illustration of safety ledges in a stormwater management basin.
A variance or exemption from the safety standards for stormwater management basins may be granted only upon written finding by the appropriate reviewing agency (municipality, County or Department) that the variance or exemption will not constitute a threat to public safety.
[Ord. No. 666-06, § 9]
Whenever an application seeks municipal approval of a development subject to this subsection, the applicant shall submit all of the required components of the Checklist for the Site Development Stormwater Plan at subsection 25-2.9c below as part of the submission of the applicant's application for subdivision or site plan approval.
The applicant shall submit four (4) copies of the materials listed in the checklist for site development stormwater plans in accordance with subsection 25-2.9c of this chapter.
Topographic Base Map. The reviewing engineer may require upstream tributary drainage system information as necessary. It is recommended that the topographic base map of the site be submitted which extends a minimum of two hundred (200) feet beyond the limits of the proposed development, at a scale of 1"=200' or greater, showing 2-foot contour intervals. The map as appropriate may indicate the following: existing surface water drainage, shorelines, steep slopes, soils, erodible soils, perennial or intermittent streams that drain into or upstream of the Category One waters, wetlands and flood plains along with their appropriate buffer strips, marshlands and other wetlands, pervious or vegetative surfaces, existing man-made structures, roads, bearing and distances of property lines, and significant natural and man-made features not otherwise shown.
Land Use Planning and Source Control Plan. This plan shall provide a demonstration of how the goals and standards of subsections 25-2.3 through 25-2.6 are being met. The focus of this plan shall be to describe how the site is being developed to meet the objective of controlling groundwater recharge, stormwater quality and stormwater quantity problems at the source by land management and source controls whenever possible.
Comprehensive hydrologic and hydraulic design calculations for the predevelopment and post-development conditions for the design storms specified in subsection 25-2.4 of this chapter.
When the proposed stormwater management control measures (e.g., infiltration basins) depends on the hydrologic properties of soils, then a soils report shall be submitted. The soils report shall be based on on-site boring logs or soil pit profiles. The number and location or required soil borings or soil pits shall be determined based on what is needed to determine the suitability and distribution of soils present at the location of the control measure.
Maintenance and Repair Plan. The design and planning of the stormwater management facility shall meet the maintenance requirements of subsection 25-2.10.
Waiver from Submission Requirements. The municipal official or board reviewing an application under this chapter may, in consultation with the municipal engineer, waive submission of any of the requirements in subsection 25-2.9c1-6 of this chapter when it can be demonstrated that the information requested is impossible to obtain or it would create a hardship on the applicant to obtain and its absence will not materially affect the review process.
[Ord. No. 666-06, § 10]
Projects subject to review as in subsection 25-2.1c of this chapter shall comply with the requirements of subsection 25-2.10b and c.
The maintenance plan shall contain specific preventative maintenance tasks and schedules; cost estimates, including estimated cost of sediment, debris, or trash removal; and the name, address, and telephone number of the person or persons responsible for preventative and corrective maintenance (including replacement). Maintenance guidelines for stormwater management measures are available in the New Jersey Stormwater Best Management Practices Manual. If the maintenance plan identifies a person other than the developer (for example, a public agency or homeowner's association) as having the responsibility for maintenance, the plan shall include documentation of such person's agreement to assume this responsibility, or of the developer's obligation to dedicate stormwater management facility to such person under an applicable ordinance or regulation.
If the person responsible for maintenance identified under subsection 25-2.10b2 above is not a public agency, the maintenance plan and any future revisions based on subsection 25-2.10b7 below shall be recorded upon the deed of record for each property on which the maintenance described in the maintenance plan must be undertaken.
The person responsible for maintenance identified under subsection 25-2.10b2 above shall maintain a detailed log of all preventative and corrective maintenance for the structural stormwater management measures incorporated into the design of the development, including a record of all inspections and copies of all maintenance-related work orders.
The person responsible for maintenance identified under subsection 25-2.10b2 above shall evaluate the effectiveness of the maintenance plan at least once per year and adjust the plan and the deed as needed.
The person responsible for maintenance identified under subsection 25-2.10b2 above shall retain and make available, upon request by any public entity with administrative, health, environmental, or safety authority over the site, the maintenance plan and the documentation required by subsection 25-2.10b6 and 7 above.
The requirements of subsection 25-2.10b3 and 4 do not apply to stormwater management facilities that are dedicated to and accepted by the municipality or another governmental agency.
[Ord. No. 666-06, § 11]
Any person, firm or corporation who violates this chapter shall, upon conviction of the violation, be subject to a fine not exceeding five hundred ($500.00) dollars or imprisonment in the County jail for a period not exceeding ninety (90) days, or both. Each day of continued operation after service of notice of violation upon the applicant, shall be considered a separate offense allowing the imposition of additional separate fines and penalties. In addition thereto, upon such conviction, the person, firm or corporation violating any provision of this chapter shall be subject to revocation of the license issued.