Source: https://ecode360.com/10010194
Timestamp: 2020-07-10 23:23:02
Document Index: 607754218

Matched Legal Cases: ['§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444', '§ 444']

Township of Cinnaminson, NJ Stormwater Control
§ 444-1 Scope and purpose.
§ 444-2 Definitions.
§ 444-3 Design and performance standards for stormwater management measures.
§ 444-4 Stormwater management requirements for major development.
§ 444-5 Calculation of stormwater runoff and groundwater recharge.
§ 444-6 Standards for structural stormwater management measures.
§ 444-7 Sources for technical guidance.
§ 444-8 Safety standards for stormwater management basins.
§ 444-9 Requirements for site development stormwater plan.
§ 444-10 Maintenance and repair.
§ 444-11 Violations and penalties.
Chapter 444 Stormwater Control
[HISTORY: Adopted by the Township Committee of the Township of Cinnaminson 3-15-2006 by Ord. No. 2006-6. Amendments noted where applicable.]
Flood hazard areas — See Ch. 290.
Purpose. It is the purpose of this chapter to establish minimum stormwater management requirements and controls for major development, as defined in § 444-2.
This chapter shall be applicable to all site plans and subdivisions for the following major developments that require preliminary or final site plan or subdivision review: Nonresidential major developments; and aspects of residential major developments that are not preempted by the Residential Site Improvement Standards at N.J.A.C. 5:21.
This chapter shall also be applicable to all major developments undertaken by the Township of Cinnaminson.
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 Township of Cinnaminson:
Any development that provides for ultimately disturbing one or more acres of land or more than 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.
Any individual, corporation, company, partnership, firm, association, the Township of Cinnaminson, 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.
As previously developed portions of areas:
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 § 444-4. 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 Township Code, including but not limited to the following sections:
Section 525-109, Site plans.
Section 525-110, Submission requirements and design standards for site plans.
The development shall incorporate a maintenance plan for the stormwater management measures incorporated into the design of a major development in accordance with § 444-10.
Stormwater management measures shall avoid adverse impacts of concentrated flow on habitat for threatened and endangered species as documented in the Department Landscape Project or Natural Heritage Database established under N.J.S.A. 13:1B-15.147 through 13:1B-15.150, particularly Helonias bullata (swamp pink) and/or Clemmys muhlnebergi (bog turtle).
The following linear development projects are exempt from the groundwater recharge, stormwater runoff quantity, and stormwater runoff quality requirements of § 444-4F and G:
A waiver from strict compliance from the groundwater recharge, stormwater runoff quantity, and stormwater runoff quality requirements of § 444-4F 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 of nonstructural and structural stormwater management strategies and measures, the option selected complies with the requirements of § 444-4F and G to the maximum extent practicable;
The applicant demonstrates that, in order to meet the requirements of § 444-4F 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 areas, including the potential to obtain through condemnation lands not falling under Subsection D(3) above within the upstream drainage area of the receiving stream, that would provide additional opportunities to mitigate the requirements of § 444-4F and G that were not achievable on site.
To the maximum extent practicable, the standards in § 444-4F and G shall be met by incorporating nonstructural stormwater management strategies set forth at § 444-4E 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 Subsection E(2) below into the design of a particular project, the applicant shall identify the strategy considered and provide a basis for the contention.
Minimize the decrease in the time of concentration from pre-construction to post-construction. "Time of concentration" is defined as the time it takes for runoff to travel from the hydraulically most distant point of the watershed to the point of interest within a watershed;
Site design features that help to prevent accumulation of trash and debris in drainage systems, including features that satisfy § 444-4E(3) below;
Site design features that help to prevent and/or contain spills or other harmful accumulations of pollutants at industrial or commercial developments; and when establishing vegetation after land disturbance, applying fertilizer in accordance with the requirements established under the Soil Erosion and Sediment Control Act, N.J.S.A. 4:24-39 et seq., and implementing rules.
Site design features identified under § 444-4E(2)(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 subsection, "solid and floatable materials" means sediment, debris, trash, and other floating, suspended, or settleable solids. For exemptions to this standard see § 444-4E(3)(c) below.
Where flows from the water quality design storm as specified in § 444-4G(1) are conveyed through any device (e.g., end-of-pipe netting facility, manufactured treatment device, or a catch basin hood) that is designed, at a minimum, to prevent delivery of all solid and floatable materials that could not pass through one of the following:
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 § 444-4G(1); or
Any land area used as a nonstructural stormwater management measure to meet the performance standards in § 444-4F and G shall be dedicated to a government agency, subjected to a conservation restriction filed with the appropriate County Clerk's office, or subject to an approved equivalent restriction that ensures that measure or an equivalent stormwater management measure approved by the reviewing agency is maintained in perpetuity.
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 § 444-7, 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 § 444-5, either:
This groundwater recharge requirement does not apply to projects within the urban redevelopment area, or to projects subject to F(1)(b)[3] below.
In order to control stormwater runoff quantity impacts, the design engineer shall, using the assumptions and factors for stormwater runoff calculations at § 444-5, complete one of the following:
Demonstrate through hydrologic and hydraulic analysis that for stormwater leaving the site, post-construction runoff hydrographs for the two- , ten- , and one-hundred-year storm events do not exceed, at any point in time, the pre-construction runoff hydrographs for the same storm events;
Demonstrate through hydrologic and hydraulic analysis that there is no increase, as compared to the pre-construction condition, in the peak runoff rates of stormwater leaving the site for the two- , ten- , and one-hundred-year storm events and that the increased volume or change in timing of stormwater runoff will not increase flood damage at or downstream of the site. This analysis shall include the analysis of impacts of existing land uses and projected land uses assuming full development under existing zoning and land use ordinances in the drainage area;
Design stormwater management measures so that the post-construction peak runoff rates for the two- , ten- , and one-hundred-year storm events are 50%, 75% and 80%, 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 damages below the point of discharge; or
Any application for a new agricultural development that meets the definition of major development at § 444-2 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 District 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.
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 § 444-7, or found on the Department's website at www.njstormwater.org. The BMP Manual and other sources of technical guidance are listed in § 444-7. 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 Box 418 Trenton, New Jersey, 08625-0418.
= Total TSS percent load removal from application of both BMPs
= TSS percent removal rate applicable to the first BMP
= TSS percent removal rate applicable to the second BMP
See § 444-6C.
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 § 444-4F 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 § 444-7.
Encroachment within the designated special water resource protection area under Subsection (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 the 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 150 feet as measured perpendicular to the top of bank of the waterway or center line of the waterway where the bank is undefined.
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 § 444-4G(8) 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 G(8) shall maintain or enhance the current functional value and overall condition of the special water resource protection area as defined in Subsection G(8)(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 150 feet as measured perpendicular to the waterway subject to this subsection.
For the purpose of calculating runoff coefficients and groundwater recharge, there is a presumption that the pre-construction 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 § 444-5A(1)(a) and the Rational and Modified Rational Methods at § 444-5A(1)(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 years without interruption prior to the time of application. If more than one land cover has existed on the site during the five 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).
Groundwater recharge may be calculated in accordance with the following: The New Jersey Geological Survey Report GSR-32, A Method for Evaluating Ground-Water 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.
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-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 1/3 the width of the diameter of the orifice or 1/3 the width of the weir, with a minimum spacing between bars of one inch and a maximum spacing between bars of six inches. In addition, the design of trash racks must comply with the requirements of § 444-8D.
Stormwater management basins shall be designed to meet the minimum safety standards for stormwater management basins at § 444-8.
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 § 444-4 of this chapter.
Manufactured treatment devices may be used to meet the requirements of § 444-4 of this chapter, provided that the pollutant removal rates are verified by the New Jersey Corporation for Advanced Technology and certified by the Department.
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 § 444-8C 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 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 § 444-8D for an illustration of safety ledges in a stormwater management basin.
Variance or exemption form safety standards. A variance or exemption from the safety standards for stormwater management basins may be granted only upon a written finding by the appropriate reviewing agency (municipality, county or Department) that the variance or exemption will not constitute a threat to public safety.
Whenever an applicant seeks municipal approval of a development subject to this chapter, the applicant shall submit all of the required components of the checklist for the site development stormwater plan at § 444-9C below as part of the submission of the applicant's application for subdivision or site plan approval.
The applicant shall submit three copies of the materials listed in the checklist for site development stormwater plans in accordance with § 444-9C of this chapter.
[Amended 12-19-2007 by Ord. No. 2007-25]
Land use planning and source control plan. This plan shall provide a demonstration of how the goals and standards of §§ 444-3 through 444-6 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 pre-development and post-development conditions for the design storms specified in § 444-4 of this chapter.
Maintenance and repair plan. The design and planning of the stormwater management facility shall meet the maintenance requirements of § 444-10.
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 § 444-9C(1) through (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.
Applicability. Projects subject to review as in § 444-1C of this chapter shall comply with the requirements of § 444-10B and C.
If the person responsible for maintenance identified under § 444-10B(2) above is not a public agency, the maintenance plan and any future revisions based on § 444-10B(7) 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 § 444-10B(2) 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 § 444-10B(2) 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 § 444-10B(2) 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 § 444-10B(6) and (7) above.
The requirements of § 444-10B(3) and (4) do not apply to stormwater management facilities that are dedicated to and accepted by the municipality or another governmental agency.
Any person(s) who is found to be in violation of the provisions of this chapter shall be subject to a fine not to exceed $100. Each and every incident, and each and every day of violation, shall constitute a separate offense under this chapter. 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: Upon conviction by a court of competent jurisdiction for a violation of this chapter, the court shall assess a penalty for said violation by one or more of the following: imprisonment in the county jail or in any place provided by the municipality for the detention of prisoners, for any term not exceeding 90 days; or by a fine not exceeding $2,000; or by a period of community service not exceeding 90 days.