Source: https://ecode360.com/10142558
Timestamp: 2018-03-21 20:44:47
Document Index: 779434021

Matched Legal Cases: ['§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', 'art 630', '§ 200', 'art 630', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200', '§ 200']

Township of Mullica, NJ Stormwater Management
§ 200-1 Scope and purpose.
§ 200-2 Requirements for site development stormwater plan.
§ 200-3 Methodologies for calculation of stormwater runoff rate and volume, stormwater runoff quality, and Groundwater Recharge.
§ 200-4 Stormwater management performance standards for major development.
§ 200-5 Design, construction and safety standards for structural stormwater management measures.
§ 200-6 Inspection, maintenance and repair of stormwater management measures.
§ 200-7 Definitions.
§ 200-9 Effective date.
§ 200-10 Appendices.
§ 200-11 Additional sources for technical guidance.
Chapter 200: Stormwater Management
[HISTORY: Adopted by the Township Committee of the Township of Mullica 3-28-2006 by Ord. No. 7-2006; amended in its entirety 12-12-2006 by Ord. No. 15-2006. Amendments noted where applicable.]
Chapter 200 : Stormwater Management
Increases of stormwater runoff, soil erosion and nonpoint source pollutants have occurred in the past as a result of land development, and contribute to the degradation of the water resources of Mullica Township and downstream municipalities.
Certain lands of Mullica Township lie within the Pinelands Area, and, therefore, development in this portion of Mullica Township is subject to the requirements of the Pinelands Protection Act (N.J.S.A. 13:18A-1 et seq.) and the implementing regulations and minimum standards contained in the Pinelands Comprehensive Management Plan (N.J.A.C. 7:50-1.1 et seq.) (CMP). The purpose and intent of these regulations and standards is to promote orderly development of the Pinelands so as to preserve and protect the significant and unique natural, ecological, agricultural, archaeological, historical, scenic, cultural and recreational resources of the Pinelands.
Increased stormwater rates and volumes and the sediments and pollutants associated with stormwater runoff from future development projects within the Pinelands Area have the potential to adversely affect Mullica Township's streams and water resources and the streams and water resources of downstream municipalities.
It is in the public interest to regulate the discharge of stormwater runoff from "major development" projects, as defined in § 200-7 of this chapter, conducted within the Pinelands Area, as provided in this chapter, in order to control and minimize increases in stormwater runoff rates and volumes, to maintain groundwater recharge, and to control and minimize soil erosion, stream channel erosion and nonpoint source pollution associated with stormwater runoff.
Therefore, it is the purpose of this chapter to establish minimum stormwater management requirements and controls for major development, consistent with the statewide stormwater requirements at N.J.A.C. 7:8, the regulations and standards contained in the Pinelands CMP, and the provisions of the adopted Master Plan and land use ordinances of Mullica Township.
Through this chapter, Mullica Township has established the following goals for stormwater control:
To restore, protect, maintain and enhance the quality of the streams and water resources of Mullica Township and the ecological character and quality of the Pinelands Area;
To minimize pollutants in stormwater runoff from new and existing development in order to restore, protect, enhance and maintain the chemical, physical and biological integrity of the surface and groundwaters of Mullica Township, to protect public health and to enhance the domestic, municipal, recreational, industrial and other uses of water; and
In order to achieve the goals for stormwater control set forth in this chapter, Mullica Township has identified the following management techniques:
All major development projects undertaken by Mullica Township shall comply with this chapter. (NOTE: This clause is intended to provide consistency with DEP's stormwater management requirements. As per normal practice, all development within the Pinelands Area which is undertaken by a Pinelands Area municipality shall comply with all of the requirements of the CMP.)
Procedures. In addition to other development review procedures set forth in the Code of Mullica Township, major developments located within the Pinelands Area shall comply with the stormwater management requirements and specifications set forth in this chapter. New agricultural development that meets the definition of major development in § 200-7 of this chapter shall be submitted to the appropriate soil conservation district for review and approval in accordance with the requirements of N.J.A.C. 5.4(b) 7:8.
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 ordinance, 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 or stringent provisions or higher standards shall control.
Whenever an applicant seeks municipal approval of a site development that is subject to this chapter, the applicant shall submit all of the required components of the checklist for the site development stormwater plan at Subsection C below as part of the applicant's application for subdivision or site plan approval. These required components are in addition to any other information required under any provisions of Mullica Township's Land Use Ordinance[1] or by the Pinelands Commission pursuant to N.J.A.C. 7:50-1.1 et seq.
The applicant shall submit three copies of the materials listed in the checklist for site development stormwater plans in accordance with § 200-2C of this chapter.
Site development stormwater plan approval. The applicant's site development stormwater plan shall be reviewed as a part of the subdivision or site plan review process by the municipal board or official from which municipal approval is sought. That municipal board or official shall consult the engineer retained by the Planning and/or Zoning Board (as appropriate) to determine if all of the checklist requirements have been satisfied and to determine if the project meets the standards set forth in this chapter.
Checklist requirements. Any application for approval of a major development shall include at least the following information, at the discretion of the Township Engineer. All required engineering plans shall be submitted to the Mullica Township and the Pinelands Commission in CAD Format 15 or higher, registered and rectified to New Jersey State Plane Feet NAD 83 or Shape Format New Jersey State Plan Feet NAD 83, and all other documents shall be submitted in both paper and commonly used electronic file formats such as .pdf, word processing, database or spreadsheet files. Three copies of each item shall be submitted. (NOTE: Mullica Township may select a different number, if appropriate.)
Topographic base map. The applicant shall submit a topographic base map of the site which extends a minimum of 300 feet beyond the limits of the proposed development, at a scale of one inch equals 200 feet or greater, showing one-foot contour intervals. The map shall indicate the following: existing surface water drainage, shorelines, steep slopes, soils, highly erodible soils, perennial or intermittent streams that drain into or upstream of any Category One or Pinelands Waters, wetlands and floodplains along with their appropriate buffer strips, marshlands and other wetlands, pervious or vegetative surfaces, existing surface and subsurface human-made structures, roads, bearing and distances of property lines, and significant natural and man-made features not otherwise shown. Mullica Township or the Pinelands Commission may require upstream tributary drainage system information as necessary.
Detailed soil and other environmental conditions on the portion of the site proposed for installation of any stormwater BMPs, including, at a minimum: soils report based on on-site soil tests; locations and spot elevations in plan view of test pits and permeability tests; permeability test data and calculations; any other required soil data (e.g., mounding analyses results) correlated with location and elevation of each test site; cross-section of proposed stormwater BMP with side-by-side depiction of soil profile drawn to scale and seasonal high water table elevation identified; and any other information necessary to demonstrate the suitability of the specific proposed structural and nonstructural stormwater management measures relative to the environmental conditions on the portion(s) of the site proposed for implementation of those measures.
The applicant shall submit a detailed land use planning and source control plan which provides a description of how the site will be developed to meet the erosion control, groundwater recharge and stormwater runoff quantity and quality standards at § 200-4 through use of nonstructural or low-impact development techniques and source controls to the maximum extent practicable before relying on structural BMPs. The land use planning and source control plan shall include a detailed narrative and associated illustrative maps and/or plans that specifically address how each of the following nine nonstructural strategies identified in Subchapter 5 of the NJDEP Stormwater Management Rules (N.J.A.C. 7:8-5) and set forth below (Subsection C(4)(a)[1] through [9]) will be implemented to the maximum extent practicable to meet the standards at § 200-4 of this chapter on the site. If one or more of the nine nonstructural strategies will not be implemented on the site, the applicant shall provide a detailed rationale establishing a basis for the contention that use of the strategy is not practicable on the site.
For sites where stormwater will be generated from "high pollutant loading areas" or where stormwater will be exposed to "source material," as defined in § 200-7 of this chapter, the applicant shall also demonstrate in the land use planning and source control plan that the requirements of § 200-4 have been met.
The use of nonstructural strategies to meet the performance standards in § 200-4 of this chapter is not required for development sites creating less than one acre of disturbance. However, each application for major development and any other application where Mullica Township otherwise requires a landscaping plan shall contain a landscaping or revegetation plan in accordance with the CMP standards at N.J.A.C. 7:50-6.24(c). In addition, the applicant shall demonstrate that, at a minimum, existing trees and vegetation on the development site will be preserved and protected according to the minimum standards established by provisions of the Mullica Township Land Use Ordinance,[2] Zoning Ordinance or by conditions of zoning or variance approval.
Calculations (groundwater recharge and stormwater runoff rate, volume and quality). The applicant shall submit comprehensive hydrologic and hydraulic design calculations for the predevelopment and postdevelopment conditions for the design storms specified in § 200-3. The standards for groundwater recharge and stormwater runoff rate, volume and quality required by § 200-4 shall be met using the methods, calculations and assumptions provided in § 200-3.
Inspection, maintenance and repair plan. The applicant shall submit a detailed plan describing how the proposed stormwater management measure(s) shall meet the maintenance and repair requirements of § 200-6 of this chapter. Said plan shall include, at a minimum, the following elements:
Exception from submission requirements. An exception may be granted from submission of any of these required components (except Subsection C(7), above, Inspection, maintenance and repair plan) if its absence will not materially affect the review process. However, items required pursuant to the application requirements in the Mullica Township Land Development Ordinance (Article 9, 144-68.3) shall be submitted to the New Jersey Pinelands Commission unless the Executive Director waives or modifies the application requirements.
In complying with the stormwater runoff quantity and rate standards in § 200-4B, the design engineer shall calculate the stormwater runoff rate and volume using the USDA Natural Resources Conservation Service (NRCS) Runoff Equation, Runoff Curve Numbers, and Dimensionless Unit Hydrograph, as described in the NRCS National Engineering Handbook Part 630 — Hydrology and Technical Release 55 — Urban Hydrology for Small Watersheds, as amended and supplemented. Alternative methods of calculation may be utilized, provided such alternative methods are at least as protective as the NRCS methodology when considered on a regional stormwater management basis.
In complying with the stormwater runoff quality standards in § 200-4F(1), the design engineer shall calculate the stormwater runoff rate and volume using the USDA Natural Resources Conservation Service (NRCS) Runoff Equation, Runoff Curve Numbers, and Dimensionless Unit Hydrograph, as described in the NRCS National Engineering Handbook Part 630 — Hydrology and Technical Release 55 — Urban Hydrology for Small Watersheds, as amended and supplemented.
Table 1: Water Quality Design Storm Standards
For purposes of TSS reduction calculations, Table 2 presents the presumed removal rates for certain BMPs designed in accordance with the New Jersey BMP Manual. The BMP Manual may be obtained from the address identified in § 200-11A or found on the NJDEP's website at www.njstormwater.org. TSS reduction shall be calculated based on the removal rates for the BMPs in Table 2.
Alternative stormwater management measures, 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 Mullica Township. Any alternative stormwater management measure, removal rate or method of calculating the removal rate shall be subject to approval by Mullica Township and a copy shall be provided to the following:
The Division of Watershed Management, New Jersey Department of Environmental Protection, PO Box 418 Trenton, New Jersey 08625-0418; and
The New Jersey Pinelands Commission, PO Box 7, New Lisbon, New Jersey 08064.
40-60 (final rate based upon detention time; see New Jersey BMP Manual, Ch. 9)
Pollutant removal rates as certified by NJDEP; see § 200-3.
0 — volume reduction only (permeable pavers without storage bed)
NOTE: Source: N.J.A.C. 7:8-5.5(c) and New Jersey BMP Manual Chapter 4.
Nutrient removal rates for stormwater BMPs. For purposes of postdevelopment nutrient load reduction calculations, Table 2 presents the presumed removal rates for certain BMPs designed in accordance with the New Jersey BMP Manual. If alternative stormwater BMPs are proposed, the applicant shall demonstrate that the selected BMPs will achieve the nutrient removal standard required in § 200-4F.
In complying with the groundwater recharge requirements in § 200-4C(1)(a), the design engineer may calculate groundwater recharge in accordance with the New Jersey Groundwater Recharge Spreadsheet (NJGRS) computer program incorporated herein by reference, as amended and supplemented. Information regarding the methodology is available in § 200-10A or from the New Jersey BMP Manual.
In complying with the groundwater recharge requirements in § 200-4C(1)(b), the design engineer shall:
To the maximum extent practicable, the performance standards in § 200-4 for major development shall be met by incorporating the nine nonstructural strategies identified in Subchapter 5 of the New Jersey Stormwater Management Rules (N.J.A.C. 7:8-5), and set forth in § 200-2C(4)(a), into the design. The applicant shall identify within the land use planning and source control plan required by § 200-2C(4) of this chapter how each of the nine nonstructural measures will be incorporated into the design of the project to the maximum extent practicable.
If the applicant contends that it is not practical for engineering, environmental or safety reasons to incorporate any of the nine nonstructural strategies into the design of a particular project, the applicant shall provide a detailed rationale establishing a basis for the contention that use of the strategy is not practical on the site. This rationale shall be submitted in accordance with the checklist requirements established by § 200-2 to Mullica Township. A determination by Mullica Township that this rationale is inadequate or without merit shall result in a denial of the application unless one of the following conditions are met:
The land use planning and source control plan is amended to include a description of how all nine nonstructural measures will be implemented on the development site, and the amended plan is approved by Mullica Township;
The land use planning and source control plan is amended to provide an alternative nonstructural strategy or measure that is not included in the list of nine nonstructural measures, but still meets the performance standards in § 200-4, and the amended plan is approved by Mullica Township; or
The land use planning and source control plan is amended to provide an adequate rationale for the contention that use of the particular strategy is not practical on the site, and the amended plan is approved by Mullica Township.
In addition to all other requirements of this section, each applicant shall demonstrate that, at a minimum, existing trees and vegetation on the development site will be preserved, protected and maintained according to the minimum standards established by provisions of the Mullica Township Land Use Ordinance,[1] Zoning Ordinance or by conditions of zoning or variance approval. Existing trees and vegetation shall be protected during construction activities in accordance with the Standard for Tree Protection During Construction provided in the New Jersey State Soil Conservation Committee Standards for Soil Erosion and Sediment Control in New Jersey, which is incorporated herein by reference, as amended and supplemented.
In addition to all other requirements of this section, each application for major development, and any other application where Mullica Township otherwise requires a landscaping plan, shall contain a landscaping or revegetation plan in accordance with the Pinelands CMP standards at N.J.A.C. 7:50-6.24(c).
Any land area used as a nonstructural stormwater management measure to meet the performance standards in § 200-4 shall be dedicated to a government entity; shall be subjected to a conservation easement filed with the appropriate county clerk's office; or shall be subjected to an equivalent form of restriction approved by Mullica Township that ensures that that measure, or equivalent stormwater management measure, is maintained in perpetuity, as detailed in § 200-6 of this chapter.
Guidance for nonstructural stormwater management strategies is available in the New Jersey BMP Manual, which may be obtained from the address identified in § 200-11A or found on the NJDEP's website at www.njstormwater.org.
Exception for major development sites creating less than one acre of disturbance. The use of nonstructural strategies to meet the performance standards in § 200-4 of this chapter is not required for major development creating less than one acre of disturbance. However, the following requirements shall be met:
Each application for major development and any other application where Mullica Township otherwise requires a landscaping plan shall contain a landscaping or revegetation plan prepared in accordance with the Pinelands CMP standards [N.J.A.C. 7:50-6.24(c)];
Each applicant shall demonstrate that, at a minimum, existing trees and vegetation on the development site will be preserved and protected according to the minimum standards established by provisions of the Mullica Township Land Use Ordinance,[2] Zoning Ordinance or by conditions of zoning or variance approval; and
In addition, the design engineer, using the assumptions and factors for stormwater runoff and groundwater recharge calculations contained in § 200-3, shall:
Demonstrate, through hydrologic and hydraulic analysis, that the postdeveloped stormwater runoff hydrographs from the project site for the two-, ten-, and one-hundred-year storms do not exceed, at any point in time, the site's predeveloped runoff hydrographs for the same storms;
Demonstrate, through hydrologic and hydraulic analysis, that under postdeveloped site conditions:
Any increased stormwater runoff volume or change in stormwater runoff timing for the two-, ten-, and one-hundred-year storms will not increase flood damage at or downstream of the project site. When performing this analysis for predeveloped site conditions, all off-site development levels shall reflect existing conditions. When performing this analysis for postdeveloped site conditions, all off-site development levels shall reflect full development in accordance with current zoning and land use ordinances; or
Demonstrate that the peak postdeveloped stormwater runoff rates from the project site for the two-, ten-, and one-hundred-year storms are 50%, 75% and 80%, respectively, of the site's peak predeveloped stormwater runoff rates for the same storms. Peak outflow rates from on-site stormwater measures for these storms shall be adjusted, where necessary, to account for the discharge of increased stormwater runoff rates and/or volumes from project site areas not controlled by the onsite measures. These percentages do not have to be applied to those portions of the project site that are not proposed for development at the time of application, provided that such areas are:
In tidal flood hazard areas, a stormwater runoff quantity analysis in accordance with Subsection B(4)(a),(b) and (c) above shall only be applied if the increased volume of stormwater runoff could increase flood damages below the point of discharge.
The standards for stormwater runoff quantity and rate required by this section shall be met using the methods, calculations and assumptions provided in § 200-3.
For all major developments, with the exception of those described in § 200-4C(4) below, the design engineer, using the assumptions and factors for stormwater runoff and groundwater recharge calculations contained in § 200-3, shall either:
Demonstrate, through hydrologic and hydraulic analysis, that the postdeveloped project site maintains 100% of the site's predeveloped average annual groundwater recharge volume; or
Demonstrate, through hydrologic and hydraulic analysis, that any increase in the project site's stormwater runoff volume for the two-year, twenty-four-hour storm from predeveloped to postdeveloped conditions is infiltrated on site.
The standards for groundwater recharge required by this section shall be met using the methods, calculations and assumptions provided in § 200-3.
The standards for stormwater runoff quality required by this section shall be met using the methods, calculations, assumptions and pollutant removal rates provided in § 200-3.
The TSS reduction requirement in § 200-4F(2) shall not apply to any stormwater runoff in a discharge regulated under a numeric effluent limitation for TSS imposed under the NJPDES rules (N.J.A.C. 7:14A) or in a discharge specifically exempt under a NJPDES permit from this requirement.
The stormwater runoff quantity and rate standards in § 200-4B shall still be met for all major development sites.
This subsection applies to the following areas of a major development as defined in § 200-7 of this chapter:
For a major development in areas described in Subsection F(1)(a) or (b) above, in addition to the infiltration requirements specified in Section § 200-4B(2) and the groundwater recharge requirements specified in § 200-4C, the applicant shall demonstrate in the land use planning and source control plan required in § 200-2C(4) that the following requirements have been met:
The extent of the areas described in Subsection F(1)(a) or (b) above have been minimized on the development site to the maximum extent practicable;
The stormwater runoff from the areas described in Subsection F(1)(a) or (b) above is segregated to the maximum extent practicable from the stormwater runoff generated from the remainder of the site such that comingling of the stormwater runoff from the areas described in Subsection F(1)(a) or (b) above and the remainder of the site will be minimized;
The amount of precipitation falling directly on the areas described in Subsection F(1)(a) or (b) above is minimized to the maximum extent practicable by means of a canopy, roof or other similar structure that reduces the generation of stormwater runoff; and
The stormwater runoff from or comingled with the areas described in Subsection F(1)(a) or (b) above for the water quality design storm, defined in § 200-3B Table 1 shall be subject to pretreatment by one or more of the following stormwater BMPs, designed in accordance with the New Jersey BMP Manual to provide ninety-percent TSS removal:
Wet ponds, which shall be hydraulically disconnected by a minimum of two feet of vertical separation from the seasonal high water table and shall be designed to achieve a minimum eighty-percent TSS removal rate;
If the potential for contamination of stormwater runoff by petroleum products exists onsite, prior to being conveyed to the pretreatment BMP required in § 200-4D(2)(d) above, the stormwater runoff from the areas described in Subsection F(1) and (2) above shall be conveyed through an oil/grease separator or other equivalent manufactured filtering device to remove the petroleum hydrocarbons. The applicant shall provide the reviewing agency with sufficient data to demonstrate acceptable performance of the device.
Exceptions from strict compliance from the groundwater recharge, stormwater runoff quantity, and stormwater runoff quality requirements established by this chapter may be granted, at the discretion of Mullica Township, and subject to approval by the Pinelands Commission, provided that all of the following conditions are met:
The exception is consistent with that allowed by Mullica Township;
Mullica Township has an adopted and effective municipal stormwater management plan in accordance with N.J.A.C. 7:8-4.4, which includes a mitigation plan in accordance with N.J.A.C. 7:8-4.2(c)11, and is also certified by the Pinelands Commission. The mitigation plan shall identify what measures are necessary to offset the deficit created by granting the exception and the Mullica Township shall submit a written report to the county review agency and the NJDEP describing the exception and the required mitigation. Guidance for developing municipal stormwater management plans, including mitigation plans, is available from the NJDEP, Division of Watershed Management and the New Jersey BMP Manual.
In lieu of the required mitigation, a monetary in lieu contribution may be provided by the applicant to Mullica Township in accordance with the following:
The amount of the in lieu contribution shall be determined by Mullica Township, but the maximum in lieu contribution required shall be equivalent to the cost of implementing and maintaining the stormwater management measure(s) for which the exception is granted;
The in lieu contribution shall be used to fund an off-site stormwater control mitigation project(s) located within the Pinelands Area, within the same drainage area as the development site, and shall meet or exceed the equivalent recharge, quality or quantity performance standards which are lacking on the development site. Such mitigation project shall be identified by Mullica Township in Mullica Township's adopted municipal stormwater management plan. The Stormwater control project to which the monetary contribution will be applied shall be identified by Mullica Township at the time the exception is granted. The applicant shall amend the project description and site plan required in § 200-2C(3) to incorporate a description of both the standards for which an on-site exception is being granted and of the selected off-site mitigation project.
Mullica Township shall expend the in lieu contribution to implement the selected off-site mitigation project within five years from the date that payment is received. Should Mullica Township fail to expend the in lieu contribution within the required timeframe, the mitigation option provided in § 200-4H(1)(c)[2] of this chapter shall be void and Mullica Township shall be prohibited from collecting in lieu contributions.
Structural stormwater management measures shall be designed to meet the standards established in this section. These standards have been developed to protect public safety, conserve natural features, create an aesthetically pleasing site and promote proper on-site stormwater management. (NOTE: Though not required by N.J.A.C. 7:8, pursuant to their authority, municipalities may have the option to require existing basins that pose a public health or safety hazard to be retrofitted to comply with the standards in this subsection.)
Structural stormwater management measures shall be designed and constructed to be strong, durable, and corrosion resistant (Measures that are consistent with the relevant portions of the Residential Site Improvement Standards at N.J.A.C. 5:21-7.3, 7.4, and 7.8 shall be deemed to meet this requirement.); to minimize and facilitate maintenance and repairs; and to ensure proper functioning.
For all stormwater management measures at a development site, each applicant shall submit a detailed inspection, maintenance and repair plan consistent with the requirements of § 200-5 of this chapter.
After all construction activities and required field testing have been completed on the development site, as-built plans depicting design and as-built elevations of all stormwater management measures shall be prepared by a licensed land surveyor and submitted to the Municipal Engineer. Based upon the Municipal Engineer's review of the as-built plans, all corrections or remedial actions deemed by the Municipal Engineer to be necessary due to the failure to comply with the standards established by this chapter and/or any reasons of public health or safety shall be completed by the applicant. In lieu of review by the Municipal Engineer, Mullica Township reserves the right to engage a professional engineer to review the as-built plans. The applicant shall pay all costs associated with such review.
Stormwater infiltration BMPs, such as bioretention systems with infiltration, dry wells, infiltration basins, pervious paving systems with storage beds, and sand filters with infiltration shall be designed, constructed and maintained to completely drain the total runoff volume generated by the basin's maximum design storm within 72 hours after a storm event. Runoff storage for greater times can render the BMP ineffective and may result in anaerobic conditions, odor and both water quality and mosquito breeding problems.
The predevelopment field test permeability rate shall be determined according to the methodologies provided in § 200-10C(3) of this chapter;
After all construction activities have been completed on the site and the finished grade has been established in the infiltration BMP, postdevelopment field permeability tests shall also be conducted according to the methodologies provided in § 200-10C(3) of this chapter;
The design engineer shall conduct a mounding analysis, as defined in § 200-7, of all stormwater infiltration BMPs. The mounding analysis shall be conducted in accordance with the requirements in § 200-10C(3)(l). Where the mounding analysis identifies adverse impacts, the stormwater infiltration BMP shall be redesigned or relocated, as appropriate.
If the design engineer determines that, for engineering, environmental or safety reasons, temporary stormwater management facilities and sediment basins cannot be constructed on the site, the stormwater infiltration basin may be placed into operation prior to the complete stabilization of its drainage area, provided that the basin's bottom during this period is constructed at a depth at least two feet higher than its final design elevation. All other infiltration BMP construction requirements in this section shall be followed. When the drainage area is completely stabilized, all accumulated sediment shall be removed from the infiltration BMP, which shall then be excavated to its final design elevation in accordance with the construction requirements of this section and the performance standards in § 200-4.
If a structural stormwater management measure has an outlet structure, escape provisions shall be incorporated in or on the structure. Escape provisions mean the permanent installation of ladders, steps, rungs, or other features that provide readily accessible means of ingress and egress from the outlet structure.
Safety ledges shall be constructed on the slopes of all new structural stormwater management measures having a permanent pool of water deeper than 2 1/2 feet. Such safety ledges shall be comprised of two steps. Each step shall be four to six feet in width. One step shall be located approximately 2 1/2 feet below the permanent water surface, and the second step shall be located one to 1 1/2 feet above the permanent water surface. See Subsection C(5)(a) below for an illustration of safety ledges in a stormwater management basin.
Applicability. Projects subject to review pursuant to § 200-1C of this chapter shall comply with the requirements of § 200-6B and C below.
The design engineer shall prepare an inspection, maintenance and repair plan for the stormwater management measures, including both structural and nonstructural measures incorporated into the design of a major development. This plan shall be submitted as part of the checklist requirements established in § 200-2C. Inspection and maintenance guidelines for stormwater management measures are available in the New Jersey BMP Manual.
The name, address and telephone number of the person or persons responsible for regular inspections and preventative and corrective maintenance (including repair and replacement). If the responsible person or persons is a corporation, company, partnership, firm, association, Mullica Township or political subdivision of this state, the name and telephone number of an appropriate contact person shall also be included.
The person responsible for inspection, maintenance and repair identified under § 200-6B(2) above shall maintain a detailed log of all preventative and corrective maintenance performed for the site's stormwater management measures, including a record of all inspections and copies of all maintenance-related work orders in the inspection, maintenance and repair plan. Said records and inspection reports shall be retained for a minimum of five years.
If the person responsible for inspection, maintenance and repair identified under § 200-6B(2) above is not a public agency, the maintenance plan and any future revisions based on § 200-6B(6) below shall be recorded upon the deed of record for each property on which the maintenance described in the maintenance plan shall be undertaken.
The person responsible for inspection, maintenance and repair identified under § 200-6B(2) above shall evaluate the effectiveness of the inspection, maintenance and repair plan at least once per year and update the plan and the deed as needed.
The person responsible for inspection, maintenance and repair identified under § 200-6B(2) above shall submit the updated inspection, maintenance and repair plan and the documentation required by § 200-6B(2) and (3) above to Mullica Township once per year.
The person responsible for inspection, maintenance and repair identified under § 200-6B(2) above shall retain and make available, upon request by any public entity with administrative, health, environmental or safety authority over the site, the inspection, maintenance and repair plan and the documentation required by § 200-6B(2) and (3) above.
In the event that the stormwater management measure becomes a public health nuisance or danger to public safety or public health, or if it is in need of maintenance or repair, Mullica Township shall so notify the responsible person in writing. Upon receipt of that notice, the responsible person shall have 14 days to effect maintenance and repair of the facility in a manner that is approved by the Municipal Engineer or the Municipal Engineer's designee. Mullica Township, at its discretion, may extend the time allowed for effecting maintenance and repair for good cause. If the responsible person fails or refuses to perform such maintenance and repair within the allowable time, Mullica Township may immediately proceed to do so with its own forces and equipment and/or through contractors. The costs and expenses of such maintenance and repair by Mullica Township shall be entered on the tax roll as a special charge against the property and collected with any other taxes levied thereon for the year in which the maintenance and repair was performed.
Financing of inspection, maintenance and repair of stormwater BMPs.[1] An adequate means of ensuring permanent financing of the inspection, maintenance and repair of stormwater BMPs shall be implemented and detailed in the inspection, maintenance and repair plan. Permanent financing of the inspection, maintenance and repair of stormwater BMPs shall be accomplished by:
The required payment of fees to a municipal stormwater fund in an amount equivalent to the cost of both ongoing maintenance activities and necessary structural replacements.
Editor's Note: See also Subsection I below.
Establishment and maintenance of funds required for nonpublic ownerships.
[Added 2-12-2008 by Ord. No. 3-2008]
For all stormwater management measures to be inspected, maintained and repaired by homeowner associations, condominium associations or any other form of nonpublic ownership, the ownership entity shall establish and maintain a fund for the annual inspection and testing program, annual maintenance and repair program and annual contribution to a contingency fund for long-term reinspection, and/or any other stormwater maintenance, and/or inspection guarantees, and/or programs as required by its site plan approval or any other portion of the Stormwater Management Ordinance.
The initial costs agreed to for the annual inspection and testing program and annual maintenance and repair program shall be based upon actual itemized proposals offered to the applicant by prospective vendors. The annual cost expended on inspection, testing and maintenance shall be reported to the Township of Mullica to verify that maintenance is not being deferred and to inform the Township of Mullica on the magnitude of those services.
The contingency fund shall require sufficient funds to be committed for long-term reconstruction of the stormwater management measure(s). Major reconstruction activities will necessitate proper financial planning. After an agreed number of years, depending on the type of measure(s), the measure(s) will need to be reconstructed. The contingency fund in the financial schedule shall be based on the future value of the measure being reconstructed. Both inflation rates and bank interest rates shall be based on the ten-year average published in the Wall Street Journal or other approved publication. Interest accruing in the account must also be accounted for at an agreed-upon interest rate to arrive at an annual contribution amount.
The ownership entity shall file with the Clerk of the Township of Mullica annually, on or before January 1, an accounting of the aforesaid contingency fund for the previous calendar year, the name and account number of the financial institution where the contingency fund is maintained, and a brief statement of the anticipated uses of the contingency fund for the next calendar year.
The owner or ownership entity shall be responsible for all stormwater drainage facilities not officially dedicated and accepted by the Township.
The Township shall notify the owner of the stormwater drainage facility of the existence of a maintenance problem when the Township has received a complaint and/or has been notified of a problem by its engineer.
The Township Engineer is authorized to investigate any such complaint and to make any recommendations to remedy any conditions, including maintenance, which may be required to bring the property into compliance with the stormwater management requirements set forth in this section.
If, after notification and a reasonable time, the owner fails to properly maintain the stormwater drainage facility, the Township may institute legal action to abate or enjoin the violation. The Township may also authorize its employees to enter the stormwater drainage facility to make it fully operative and compliant with the Stormwater Management Ordinance. The Township shall be reimbursed for such repairs by the ownership entity. In the event that reimbursement is not made within 60 days of notification to the ownership entity, then and in that event, any such costs shall become a lien on the property in favor of the Township of Mullica until such time as the Township is reimbursed.
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. When used in this chapter, the following terms shall have the meanings herein ascribed to them.
The propagation, rearing and subsequent harvesting of aquatic organisms in controlled or selected environments, and their subsequent processing, packaging and marketing, including but not limited to activities to intervene in the rearing process to increase production such as stocking, feeding, transplanting and providing for protection from predators.
Any division of land into five or more lots; any construction or expansion of any housing development of five or more dwelling units; any construction or expansion of any commercial or industrial use or structure on a site of more than three acres; or any development, grading, clearing or disturbance of an area in excess of 5,000 square feet. Disturbance, for the purpose of this chapter, is the placement of impervious surface or exposure and/or movement of soil or bedrock or clearing, cutting or removing of vegetation. Excludes single-family dwellings.
A geographic area within which stormwater, sediments, or dissolved materials drain to a BMP, a stormwater management system, a particular receiving waterbody or a particular point along a receiving waterbody.
An area or feature which is of significant environmental value, including but not limited to: stream corridors; natural heritage priority sites; habitat of endangered or threatened animal species; threatened or endangered plants of the Pinelands pursuant to N.J.A.C. 7:5-6.27(a); large areas of contiguous open space or upland forest; steep slopes; and wellhead protection and groundwater recharge areas. Threatened and endangered habitat constitutes habitat that is critical for the survival of a local population of threatened and endangered species or habitat that is identified using the Department's Landscape Project, as approved by the Department's Endangered and Nongame Species Program, whichever is more inclusive. Threatened and endangered wildlife shall be protected in conformance with N.J.A.C. 7:50-6.33.
A test performed to demonstrate that the groundwater below a stormwater infiltration basin will not mound up, encroach on the unsaturated zone, break the surface of the ground at the infiltration area or downslope, and create an overland flow situation.
An area in an industrial or commercial development site: where solvents and/or petroleum products are loaded/unloaded, stored, or applied; where pesticides are loaded/unloaded or stored; 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; where recharge would be inconsistent with NJDEP-approved remedial action work plan or landfill closure plan; and/or where a high risk exists for spills of toxic materials, such as gas stations and vehicle maintenance facilities. The term "HPLA" shall have the same meaning as high pollutant loading area.
A monetary fee collected by Mullica Township in lieu of requiring strict on-site compliance with the groundwater recharge, stormwater runoff quantity and/or stormwater runoff quality standards established in this chapter.
Acts necessary to prevent, limit, remedy or compensate for conditions that may result from those cases where an applicant has demonstrated the inability or impracticality of strict compliance with the stormwater management requirements set forth in N.J.A.C. 7:8, in an adopted regional stormwater management plan, or in a local ordinance which is as protective as N.J.A.C. 7:8, and an exception from strict compliance is granted by Mullica Township and the Pinelands Commission.
The Planning Board, Zoning Board of Adjustment or other board, agency or official of Mullica Township with authority to approve or disapprove subdivisions, site plans, construction permits, building permits or other applications for development approval. For the purposes of reviewing development applications and ensuring compliance with the requirements of this chapter, Mullica Township may designate the Municipal Engineer or other qualified designee to act on behalf of Mullica Township.
Guidance developed by the New Jersey Department of Environmental Protection, in coordination with the New Jersey Department of Agriculture, the New Jersey Department of Community Affairs, the New Jersey Department of Transportation, Municipal Engineers, county engineers, consulting firms, contractors, and environmental organizations to address the standards in the New Jersey Stormwater Management Rules, N.J.A.C. 7:8. The BMP manual provides examples of ways to meet the standards contained in the rule. An applicant may demonstrate that other proposed management practices will also achieve the standards established in the rules. The manual, and notices regarding future versions of the manual, are available from the Division of Watershed Management, NJDEP, PO Box 418, Trenton, New Jersey 08625, and on the NJDEP's website, www.njstormwater.org. The term "New Jersey BMP Manual" shall have the same meaning as New Jersey Stormwater Best Management Practices Manual.
Any individual, corporation, company, partnership, firm, association, Mullica Township 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.
Any dredged spoil, solid waste, incinerator residue, filter backwash, sewage, garbage, refuse, oil, grease, sewage sludge, munitions, chemical wastes, biological materials, medical wastes, radioactive substances [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, suspended solids, 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.
A particle size category consisting of mineral particles which are between 0.05 and 2.0 millimeters in equivalent spherical diameter. Also, a soil textural class having 85% or more of sand and a content of silt and clay such that the percentage of silt plus 1.5 times the percentage of clay does not exceed 15, as shown in § 200-10C(1) (USDA Soil Textural Triangle).
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.
A basin or other facility constructed within permeable soils that provides temporary storage of stormwater runoff. An infiltration BMP does not normally have a structural outlet to discharge runoff from the stormwater quality design storm. Instead, outflow from an infiltration BMP is through the surrounding soil. The terms "infiltration measure" and "infiltration practice" shall have the same meaning as stormwater infiltration BMP.
The insoluble solid matter suspended in water and stormwater that is separable by laboratory filtration in accordance with the procedure contained in the "Standard Methods for the Examination of Water and Wastewater," prepared and published jointly by the American Public Health Association, American Water Works Association and the Water Pollution Control Federation. The term "TSS" shall have the same meaning as total suspended solids.
Any person who erects, constructs, alters, repairs, converts, maintains, or uses any building, structure or land in violation of this chapter shall be subject to the following penalties:
A fine not to exceed $1,250 or imprisonment not to exceed 90 days. Each day that a violation shall continue shall constitute a separate violation.
Nothing in this chapter shall be construed to limit the Township's right to institute and maintain a civil action, from seeking active injunctive relief, or to set aside or invalidate any conveyance made pursuant to a contract of sale.
The New Jersey Geological Survey Report GSR-32: A Method for Evaluating Groundwater Recharge Areas in New Jersey, available at http://www.njgeology.org/geodata/dgs99-2.htm.
The New Jersey Groundwater Recharge Spreadsheet (NJGRS), available in the New Jersey BMP Manual, Chapter 6, at http://www.njstormwater.org/bmp_manual2.htm.
NJDEP nonstructural strategies point system. The New Jersey Stormwater Management Rules at N.J.A.C. 7:8-5.2(a), and § 200-4A of this chapter, require nonstructural stormwater strategies to be incorporated into the site design of a major development. A total of nine strategies are to be to the maximum extent practical to meet the groundwater recharge, stormwater quality and stormwater quantity requirements of the rules prior to utilizing structural stormwater management measures. The New Jersey Nonstructural Stormwater Management Strategies Point System (NPS) provides a tool to assist planners, designers and regulators in determining that the strategies have been used to the maximum extent practical at a major development as required by the rules. Refer online to http://www.njstormwater.org. for information on the NSPS. [Note: Refer to NJDEP for information on development of the nonstructural point system.]
Definitions. For the purposes of this section, the following terms shall have the meanings herein ascribed to them.
A particle size category consisting of mineral particles which are smaller than 0.002 millimeters in equivalent spherical diameter. Also, a soil textural class having more than 40% clay, less than 45% sand, and less than 40% silt, as shown in § 200-10C(1) (USDA Soil Textural Triangle).
A soil textural class having 27% to 40% clay and 20% to 45% sand, as shown in § 200-10C(1) (USDA Soil Textural Triangle).
The diameter of a sphere which has a volume equal to the volume of a particle.
A soil textural class, as shown in § 200-10C(1) (USDA Soil Textural Triangle), that has a maximum of 85% to 90% sand with a percentage of silt plus 1.5 times the percentage of clay not in excess of 15, or a minimum of 70% to 85% sand with a percentage of silt plus 1.5 times the percentage of clay not in excess of 30.
Characterized by a soil aggregate which has one axis distinctly shorter than the other two and are oriented with the short axis vertical.
A soil textural class having 35% or more of clay and 45% or more of sand, as shown in § 200-10C(1) (USDA Soil Textural Triangle).
A soil textural class, as shown in § 200-10C(1) (USDA Soil Textural Triangle), that has a maximum of 20% clay, and the percentage of silt plus twice the percentage of clay exceeds 30, and contains 52% or more sand; or less than 7% clay, less than 50% silt, and between 43% and 52% sand.
A particle size category consisting of mineral particles which are between 0.002 and 0.05 millimeters in equivalent spherical diameter. It also means a soil textural class having 80% or more of silt and 12% or less of clay, as shown in § 200-10C(1) (USDA Soil Textural Triangle).
A soil textural class having 50% or more of silt and 12% to 27% of clay; or 50% to 80% of silt and less than 12% of clay, as shown in § 200-10C(1) (USDA Soil Textural Triangle).
A soil textural class having 40% or more of clay and 40% or more of silt, as shown in § 200-10C(1) (USDA Soil Textural Triangle).
A soil textural class having 27% to 40% of clay and less than 20% of sand, as shown in § 200-10C(1) (USDA Soil Textural Triangle).
One of the classes of soil texture defined within the USDA system of classification (Soil Survey Manual, Agricultural Handbook No. 18, USDA Soil Conservation Service, 1962).
The system of classifying soil texture used by the United States Department of Agriculture which defines 12 soil textural classes based upon the weight percentages of sand, silt and clay in that portion of the soil which passes through a sieve with two-millimeter openings. The soil textural classes are shown graphically on the USDA Soil Textural Triangle, as shown in § 200-10C(1).
All soil test pits and soil permeability results shall be performed under the direct supervision of a professional engineer. All soil logs and permeability test data shall be accompanied by a certification by a professional engineer. The results and location (horizontal and vertical) of all soil test pits and soil permeability tests, both passing and failing, shall be reported to Mullica Township.
A minimum of two soil test pits shall be excavated within the footprint of any proposed infiltration BMP to determine the suitability and distribution of soil types present at the site. Placement of the test pits shall be within 20 feet of the basin perimeter, located along the longest axis bisecting the BMP. For BMPs larger than 10,000 square feet in area, a minimum of one additional soil test pit shall be conducted within each additional area of 10,000 square feet. The additional test pit(s) shall be placed approximately equidistant to other test pits, so as to provide adequate characterization of the subsurface material. In all cases where soil and/or groundwater properties vary significantly, additional test pits shall be excavated in order to accurately characterize the subsurface conditions below the proposed infiltration BMP. Soil test pits shall extend to a minimum depth of eight feet below the lowest elevation of the basin bottom or to a depth that is at least two times the maximum potential water depth in the proposed infiltration BMP, whichever is greater.
Soil permeability tests shall be conducted on the most hydraulically restrictive horizon or substratum to be left in place below the basin as follows. Where no soil replacement is proposed, the permeability tests shall be conducted on the most hydraulically restrictive horizon or substratum within four feet of the lowest elevation of the basin bottom or to a depth equal to two times the maximum potential water depth within the basin, whichever is greater. Where soil replacement is proposed, the permeability tests shall be conducted within the soil immediately below the depth of proposed soil replacement or within the most hydraulically restrictive horizon or substratum to a depth equal to two times the maximum potential water depth within the basin, whichever is greater. Permeability tests may be performed on the most hydraulically restrictive soil horizons or substrata at depths greater than those identified above based upon the discretion of the design or testing engineer. The tested infiltration rate should then be divided by two to establish the soil's design permeability rate. Such division will provide a one-hundred-percent safety factor to the tested rate.
A groundwater mounding analysis shall be provided for each stormwater infiltration BMP. The groundwater mounding analysis shall calculate the maximum height of the groundwater mound based upon the volume of the maximum design storm. The professional engineer conducting the analysis shall provide the Municipal Engineer with the methodology and supporting documentation for the mounding analysis used and shall certify to Mullica Township, based upon the analysis, that the groundwater mound will not cause stormwater or groundwater to breakout to the land surface or cause adverse impact to adjacent surface water bodies, wetlands or subsurface structures, including but not limited to basements and septic systems. If there is more than one infiltration BMP proposed, the model shall indicate if and how the mounds will interact. The mounding analysis shall be calculated using the most restrictive soil horizon that will remain in place within the explored aquifer thickness unless alternative analyses is authorized by the Municipal Engineer. The mounding analysis shall be accompanied by a cross section of the infiltration BMP and surrounding topography and the mound analysis shall extend out to the point(s) at which the mound intersects with the preexisting maximum water table elevation.
The applicant shall demonstrate that stormwater infiltration BMPs meet the seventy-two-hour drain time requirement established in § 200-5B(1) of this chapter.
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 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 § 200-3 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:
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 § 200-3 of this chapter; or
New Jersey BMP Manual, available from the Division of Watershed Management, New Jersey Department of Environmental Protection, PO Box 418, Trenton, New Jersey 08625; or online at http://www.njstormwater.org.
NJDEP Stormwater Management Facilities Maintenance Manual, available from the Division of Watershed Management, New Jersey Department of Environmental Protection, PO Box 418, Trenton, New Jersey 08625; or online at http://njedl.rutgers.edu/ftp/PDFs/1188.pdf.
New Jersey Pinelands Commission, PO Box 7, 15 Springfield Road, New Lisbon, New Jersey 08064; Phone: 609-894-7300; Website: http://www.state.nj.us/pinelands.
State Soil Conservation Committee Standards for Soil Erosion and Sediment Control in New Jersey, available from all state soil conservation districts, including Burlington County Soil Conservation District, Tiffany Square, Suite 100, 1289 Route 38, Hainesport, New Jersey 08036; Phone: 609-267-7410; Fax: 609-267-3347; Website: http://bscd.org.
Cape Atlantic Conservation District, 6260 Old Harding Highway, Mays Landing, New Jersey 08330; Phone: 609-625-3144; Fax: 609-624-7360; Website: http://www.capeatlantic.org.
New Jersey Department of Transportation, PO Box 600, Trenton, New Jersey 08625-0600; Phone: 609-530-3536; Website: http://www.state.nj.us/transportation.