Borough of Riverdale, NJ Design Standards

Extension of streets. The arrangement of streets not shown on the Master Plan or Official Map shall be such as to provide for the appropriate extension of existing streets with a minimum right-of-way of 50 feet.

Local streets. Local streets shall be so designed as to discourage through traffic.

Property abutting major collector streets. Property abutting major collector streets may be required to provide reverse frontage with a buffer strip for planting or some other means of separation of local and through traffic as the approving authority may determine to be appropriate.

Minimum rights-of-way, pavement widths and shoulders.

The right-of-way width shall be measured from street line to street line.

The right-of-way pavement and shoulder width for all streets shall be determined on an individual basis and shall in all cases be of sufficient width and design to safely accommodate the maximum traffic, parking and loading needs and maximum access for fire-fighting equipment.

When a street is shown at a greater width on the Master Plan or Official Map or said street constitutes an extension of an existing street with a greater width than 50 feet, the approving authority may require the dedication or reservation of more than 50 feet.

Substandard street right-of-way and pavement width. In connection with site plans or subdivisions that adjoin or include existing streets that do not conform to widths specified in this chapter, the applicant shall be required to grant, by dedication, easement or reservation, additional width along either one or both sides of said road. If the property is along one side only, 1/2 of the required difference in roadway width shall be granted by dedication, easement or reservations.

Street orientation. Streets shall be so oriented as to permit, within limits of practicability and feasibility, the buildings constructed thereon to maximize solar gain; however, horizontal and vertical alignments for roads shall relate to the natural contours of the site, wherever practical, in order to minimize grading and land disturbances, while being consistent with other design criteria.

Street grades.

Streets shall follow the natural contour of the land wherever possible to avoid excessive land disturbance.

Grades of major and minor collector streets shall not exceed 8%. Grades on other streets shall not exceed 10%. No street shall have a minimum grade of less than 1/2%.

Intersections of any street with a major or minor collector street shall have a maximum grade of 3% within 100 feet of the street intersection.

The street grade for local street intersections with one another shall not exceed 4% within 100 feet of the street intersection.

All changes in grade shall be connected by vertical curves of sufficient radius to provide a smooth transition and proper sight distance.

(8)

Street intersections. Street intersections shall be as nearly at right angles as is possible and in no case shall be less than 80º. At intersections, curbs shall have a radius of not less than 25 feet for local streets and 30 feet for minor and major collector streets. For complex intersections, traffic islands may be required and such islands shall be landscaped and mountable curbs shall be utilized and may be required to be provided with reflective coating.

(9)

Reserve strips. No subdivision that shows reserve strips controlling access to streets shall be approved except where control and disposal of land comprising such strips has been deeded and dedicated to the Borough or county.

(10)

Street jogs. Street jogs shall have center-line offsets of not less than 150 feet.

(11)

Reverse curve tangents. A tangent at least 100 feet in length shall be introduced between reverse curves on major and minor collector streets and a tangent at least 50 feet in length shall be introduced between reverse curves on local streets.

(12)

Street line deflection. When connecting street lines deflect from each other at any one point by more than 10º and not more than 45º, they shall be connected by a curve with a radius of not less than 100 feet for local streets and 300 feet for collector streets.

(13)

Acceleration and deceleration lanes. Acceleration and deceleration lanes shall be provided where major collector streets intersect with other major collector streets and may be required when any other street or driveway intersects with a major collector street where there is a significant amount of traffic or specific safety factors govern the matter. These lanes shall be designed in accordance with American Association of State Highway Officials guidelines as defined in A Policy on Geometric Design of Rural Highways, 1965.

(14)

Cul-de-sac streets.

Dead-end streets (culs-de-sac) shall be no longer than 800 feet and shall provide a turnaround at the end. Cul-de-sac turnarounds shall conform with either the standard or tear drop culs-de-sac as shown on Plat 10-1[1] and described below. Where special conditions warrant and are justified by the applicant, greater center islands may be considered by the approving authority.

Editor's Note: Plat 10-1 is on file in the Borough offices.

Types.

Standard. Right-of-way shall have a radius of 50 feet and be tangent to the right side of the street. Outside curb radius shall be 38 feet, and inside curb radius shall be 12 feet. The center island shall be landscaped to provide minimum maintenance.

Teardrop. Right-of-way shall have a radius of 73 feet. Outside curb radius shall be 61 feet, and inside curb radius shall be 35 feet. The center island shall remain in its natural state.

Utilities shall not be permitted within the center islands of culs-de-sac.

(15)

Street names. No street shall have a name which will duplicate or so nearly duplicate a name as to be confused with the names of existing streets. The continuation of an existing street shall have the same name as the existing street. The approving authority shall approve all street names.

(16)

Street name signs.

Street name signs shall be located at the intersections of all streets.

Street name signposts shall be constructed of two-inch outside diameter galvanized steel with 1 5/8 inches inside diameter. They shall have a height of eight feet above adjacent grade and shall be constructed so as to form a strong junction between the nameplate and the post. The nameplate portion shall measure 24 inches in length by three inches wide by 0.08 inch thick of 6061-T6 aluminum and shall be centered on the post and shall be clearly marked with white reflective letters upon a medium green dull background. Alternately, the approving authority may approve a variation of these standards if it can be demonstrated by the applicant that the alternative proposal shall, in regard to the health, safety, welfare and aesthetic interest of the municipality, meet or exceed the standards described above.

Street name signs shall be installed prior to the issuance of the first building permit.

(17)

Street curbs. Concrete or Belgian block curbs shall be constructed along all streets in accordance with the standards provided in Subsection B herein.

(18)

Streetlights. Streetlights shall be installed at intersections of major and minor collector streets in accordance with the provisions of this chapter.

(19)

Land disturbance. All roadways shall be designed to minimize land disturbance to the maximum practical extent. These roadways shall avoid, wherever possible, critical areas such as steep slopes, buffer areas, waterways and the area immediately adjacent thereto, wetlands, floodways and flood hazard areas.

(20)

Cross sections for streets. Cross sections for streets shall be provided at fifty-foot intervals along the length of the street where the proposed road center line differs from the existing grades by four or more feet. Where the proposed street center-line elevation is less than four feet, a standard cross section for the street shall be provided to indicate the methods of construction for the development. Cross sections shall extend 50 feet beyond top of slope or toe of slope on each side of the proposed street.

(21)

Sight distances and sight triangles. Site distances shall be provided in each direction at an intersecting street and driveway to provide a driver with clear, visible sight along the intersected street to safely cross or enter the intersection or driveway. See Zoning Ordinance for further standards.[2]

Editor's Note: See Ch. 168, Zoning.

(22)

Street trees. Street trees shall be planted along all new streets in accordance with § 149-52H herein.

(23)

Street locations. No street shall be located so as to create a three-sided lot.

Street construction standards. All new streets in the Borough shall be constructed in accordance with the following provisions:

Local street construction shall contain a total thickness of 8 1/2 inches consisting of a four-inch subbase course, a three-inch base course and a one-and-one-half-inch surface course. Major and minor collector street construction shall contain a total thickness of 11 1/2 inches consisting of a six-inch subbase course, a four-inch base course and a one-and-one-half-inch surface course.

The quality of materials and performance of work specified herein shall be in accordance with the 1961 Standard Specifications for Road and Bridge Construction of the State Highway Department, and amendments thereto, to include Addenda A. All reference to "Standard Specifications" shall refer to these specifications and amendments.

Subbase. The street subbase shall be constructed to the thickness noted in Subsection B(1) herein and shall contain quarry process stone, Type 5A, as defined in Article 2.92 of the Standard Specifications. All topsoil shall be stripped from the proposed limits of the roadway and placed outside the limits for use as final grading of landscaped or grassed areas. The subgrade shall be excavated to the limits and grades as indicated on the approved plans. Preparation of subgrade shall be in conformance with Article 2.10.3 of the Standard Specifications. Installation of the subbase shall be in conformance with Article 2.9.3 of the Standard Specifications.

Base course. The street base course shall be constructed to the thickness noted in Subsection B(1) herein and shall contain course aggregate bituminous concrete (CA-BC) mix No. I-2 as detailed in Articles 3.2A.2 and 3.10.2 (Table 3) of the Standard Specifications. Construction of the base course shall be by a self-contained power-propelled bituminous concrete paver meeting the requirements of Article 3.10.3 of the Standard Specifications.

Surface course.

The street surface course shall be constructed to the thickness noted in Subsection B(1) herein and shall contain fine aggregate bituminous concrete (FA-BC) mix No. I-5 as detailed in Article 3.10.2 of the Standard Specifications. Installation shall conform with Article 3.10.3 of the Standard Specifications.

Where five days or greater has elapsed before installation of the surface course, a tack coat shall be applied to the base course prior to construction of the surface course to ensure proper bond.

The tack coat material shall be cutback asphalt, grade RC-70, conforming to Article 3.10.2 of the Standard Specifications. The tack coat shall be applied at a rate of 0.07 gallon per square yard of street surface.

Street curbing.

Street curbing shall be required for all new street construction and shall consist of concrete or Belgian block. All curbs shall have an exposed face of six inches.

Belgian block curbing shall be constructed of solid granite blocks with the following minimum dimensions: five inches wide, nine inches long and five inches thick. These shall be set in a bed of 3,000 pounds per square inch concrete, 15 inches deep and 12 inches wide.

Concrete curbing shall be constructed of 3,000 pounds per square inch concrete, 20 inches deep, six inches wide at the top and seven inches wide at the bottom, and shall be in accordance with the Standard Specifications.

Shoulders. Shoulders shall be graded to provide positive drainage to the street between 1% and 5%.

Sidewalks.

Each land development requiring approval may be required to provide a sidewalk within the right-of-way or in the development.

Sidewalks shall be required for any development of 50 or more parking spaces within said parking area to provide convenient and safe access for pedestrian circulation.

Sidewalks shall be constructed of concrete, brick or other material deemed appropriate by the approving authority and shall be at least four feet in width. Where concrete is used, four-inch-thick reinforced concrete shall be utilized.

Sidewalks between parking areas and principal structures, along aisles and driveways and wherever pedestrian traffic shall occur shall be raised six inches or more above the parking area, except when crossing streets or driveways. Sidewalks, when constructed along the side or rear of a building, shall be located not less than three feet from the building.

Where applicable, the design and placement of sidewalks shall conform to the standards of this chapter and of New Jersey law regarding use by physically handicapped persons.

Trails.

Any marked hiking trail which is located within a subdivision or site plan as provided in the Borough Master Plan shall be duly noted and preserved wherever possible.

When the original location cannot be maintained, trails shall be relocated to provide a continuous scenic path through the subdivision or site plan and shall continue to rejoin to the original trail.

Guardrails. Guardrails shall be provided in appropriate locations where required for safety purposes. Guardrails shall be provided in all locations where slopes exceed 1:4 and the horizontal deflection exceeds two feet, along all streets, driveways and parking areas.

Block patterns.

Block length and width or acreage within bounding streets shall be such as to accommodate the size of the lot required by the Zoning Ordinance[3] and to provide for convenient access, circulation control and safety of street traffic.

Editor's Note: See Ch. 168, Zoning.

In blocks of 1,000 feet or more in length, walkways interconnecting between streets may be required in locations deemed necessary by the approving authority. Such walkways shall have a right-of-way width of 10 feet and a six-foot-wide improved surface, the construction of which shall be as provided in Subsection H herein. Such walkway may also be required to include other improvements such as lighting.

For all uses, block sizes shall be sufficient to accommodate the proposed uses and to permit reasonable circulation and access for fire-fighting and emergency services.

Lots.

Lot dimensions, areas and setbacks shall not be less than the requirements of the Zoning Ordinance.[4]

Editor's Note: See Ch. 168, Zoning.

Insofar as is practical, side lot lines shall be at right angles to straight streets and radial to curved streets.

Each lot must front upon an approved and improved street with a right-of-way width of at least 50 feet, except as provided herein.

Where extra width has been dedicated or reserved for widening of existing streets, lots shall begin at such extra width line for determination of compliance with lot width, depth and setback requirements.

Where there is a question as to the suitability of a lot or lots for their intended use due to such factors such as rock formations, drainage conditions, watercourses, historic sites, flood conditions, steep topography or similar circumstances, the applicant shall demonstrate the suitability of these lots to accommodate such development or the approving authority may withhold approval of such lots.

No development shall take place where the ground surface slope exceeds 20% except that in the MF-1 Zone such ground surface slopes may be disturbed provided that no more than 60% of the land area having a surface with a slope in excess of 20% shall be disturbed subject to the approval of the reviewing authority and based on comments from the reviewing authority engineer and other professionals. The reviewing authority's approval shall be exercised in connection with its site plan review and shall not necessitate a waiver except where the 60% limitation is exceeded.

[Amended 12-17-2001 by Ord. No. 17-2001]

Corner lots shall have property lines that have rounded corners.

(8)

The approving authority may require that the minimum lot area of a corner lot be increased by 5%.

(9)

No lot shall front along three streets unless the area of said lot shall be 100% in excess of the minimum lot size in the zone in which it is located.

Bikeways or walkways. Where bikeways or walkways are developed, they shall be constructed of three-inch-thick CA-BC base material as provided in Subsection B herein for roadway construction. Bikeways or walkways shall have a minimum width of six feet.

Building accessibility. Access is required around the entire building or structure, where terrain permits, due to firesafety requirements.

§ 149-52 Landscaping and buffers.

All site plan and subdivision applicants, where appropriate, shall be required to file a landscaping plan with the application.

The landscaping plan shall adhere to the following design principles:

Landscaping shall be designed to provide for climate control, to accent and complement buildings, to visually break up expansive walls and parking areas, to screen parking, storage and loading areas, to control erosion, to shield different types of land uses from one another and to lessen deleterious noise and other adverse effects.

Provisions shall be made for a variety of landscaping. Landscaping should reflect local soil conditions, water availability, mature growth characteristics, sight distance requirements, seasonal changes and other related factors.

Shade and flowering decorative trees and upright shrubs shall be balled with burlap and shall conform to the following:

Shade trees shall be of a deciduous type and shall not be less than one-and-one-half-inch caliper, measured 18 inches above the ground, nor less than 10 feet high. They shall be well branched, the branches to start not less than six feet from the crown to the root system.

Flowering decorative trees shall not be less than one-and-one-eighth-inch caliper, measured 18 inches above the ground, nor less than six feet high. They must be well branched, the branches to start not less than three feet from the crown to the root system.

Upright shrubs shall not be less than two feet tall at planting. Spreading shrubs shall have at least a two-foot spread.

Shade trees shall be planted at intervals from 40 feet to 60 feet. Flowering decorative trees shall be planted at intervals from 25 feet to 40 feet. Trees shall not be planted closer than 30 feet from two intersecting streets or from any streetlight.

Evergreens and earthen berms used as screening devices shall conform to the following:

Evergreens shall be planted in at least two staggered rows. The rows shall be four feet apart with trees planted at four-foot intervals in each row. Plants shall be at least four feet tall, balled and burlapped.

Earthen berms shall be maintained with a minimum height of four feet and a maximum slope of two feet horizontal to one foot vertical. The slopes shall be suitably stabilized with vegetation to prevent erosion.

Landscaped buffer areas, where required between abutting properties, shall include evergreens such as white pine, Austrian pine, Canadian hemlock or Serbian spruce. The buffer shall be planted to a depth of 10 feet. Buffer zone area landscaping may include screening devices identified in Subsection C(1) and (2) herein. The screen area can be supplemented by deciduous trees and plants and may include fencing and/or walls, if deemed necessary by the approving authority.

Existing trees to remain shall be preserved by not varying the grade around the trees by more than 12 inches, by construction of tree wells and by erecting protective fences.

In parking lots, at least 5% of the area within the perimeter of the paved surface shall be covered by landscaping. The landscaping shall be located along walkways, in center islands and at the end of bays and placed or protected from damage by vehicles overhanging the edge of the pavement.

Where outdoor storage is permitted, it shall be suitably screened and landscaped in accordance with Subsection C herein.

Street trees shall be of a deciduous variety and conform to the standards of shade trees as provided in Subsection B herein. Street trees shall be planted two feet from the curbline or edge of the pavement. They shall be hard maple, ash or a variety as approved by the approving authority.

§ 149-53 Soil erosion, sediment control and stormwater management. [1]

Design principles.

Provisions shall be made for the drainage of surface runoff waters in and from the premises so that flooding and erosion of the property and the property of others shall be prevented.

Soil erosion and sediment control and stormwater management plans must coordinate with all other applicable ordinances, statutes and governmental agency requirements, including but not limited to Soil Conservation Service, Army Corps of Engineers, the New Jersey Department of Environmental Protection and the United States Environmental Protection Agency.

The following principles shall govern the preparation of all applications and guide the approving authority in its consideration of same:

Vegetation.

The practical philosophy regarding sediment control is to arrest it at the earliest possible stage and retain it on the construction site. The susceptibility of the land to erosion shall be minimized during and after development.

The smallest practical area of soil shall be exposed at any one time. As the use of natural cover is an effective method of limiting erosion and stormwater runoff, existing natural vegetation shall be protected and preserved to the maximum extent possible.

Temporary plant cover and/or effective mulching shall be used to protect critical erosion areas during development. Temporary vegetative cover shall be such as to perpetuate itself until permanent vegetation is provided. Vegetative cover shall be established as early during development as possible.

Specifications for both temporary and permanent seeding shall be prepared and submitted. Permanent measures for soil erosion and stormwater management, including seeding and/or sodding of grass waterways, shall be completed before beginning any other land disturbance or construction.

Nonvegetation. To intercept sediment and debris in runoff water during development, nonvegetative measures such as stone filter berms, brush barriers, staked straw bale barriers, sediment basins or silt traps shall be installed and maintained. Maintenance for all nonvegetation shall be subject to § 149-49 herein.

Excavation.

The manner and sequence in which excavation takes place can strongly affect the success of the soil erosion and sediment control plan.

Excavated material shall not be spilled or dumped into streams, watercourses, wetlands or stream buffers or placed in such a manner that it will easily erode into them.

Stream buffers shall remain in their natural vegetative state, undisturbed, except as provided herein, and shall not be used for storage or parking of equipment and automobiles.

Depressions and pits shall not be created. Lateral support of abutting roads and properties shall be provided.

Except for excessive amounts of topsoil, no topsoil shall be removed from the site. No topsoil shall be used as spoil.

Topsoil moved during the course of development shall be redistributed so as to provide at least six inches of cover to all disturbed areas of the development and shall be stabilized by seeding or plantings.

Drainage patterns.

Wherever possible, streams, watercourses and wetlands and their stream buffers shall be preserved, and interruption or impediment of natural drainage entering or leaving the property shall be minimized.

Maximum use shall be made of presently existing surface water runoff control devices, mechanisms or areas such as existing berms, terraces, streams, grass waterways, favorable hydrologic soils, swales, watercourses, woodlands, floodplains and wetlands as well as any proposed retention/detention structures.

Due consideration shall be given to the relationship of the subject property to the natural or established drainage pattern of the subwatershed of which it is a part.

Surface water runoff shall not be transferred from one watershed to another by artificial means.

Evaluation shall be made of the characteristics of the subwatershed of which the development is a part and the receiving stream capacities.

Streams, watercourses and wetlands which normally carry or receive surface water runoff shall not be overloaded with increased runoff, sediment or other pollution during or after development.

[7]

Any changes in the contours of the land from its natural state or any structures, diversions or other improvement shall not introduce into any stream, watercourse, wetland or aquifer recharge area any pollutant, whether from a point or nonpoint source, discharge or sediment load which would affect the stability or ecological balance of the streams, watercourses, wetlands or aquifer recharge areas by either pollution or any increase or decrease of the natural flows.

Groundwater recharge. The ability to retain and maximize the groundwater recharge capacity of the area being developed is encouraged. Design of the stormwater runoff control system shall give consideration to providing groundwater recharge to compensate for the reduction in the percolation that occurs due to the increase in impervious surface areas.

(f)

Drainage facilities.

All water-carrying structures and/or retention/detention areas shall be completed and stabilized prior to diversion of water to them.

Temporary drainage facilities shall be provided to accommodate water runoff during the construction of permanent drainage facilities.

Where development of a property presents the threat of flooding or damage by flash runoff to downstream areas, the facilities for stormwater runoff control shall be constructed prior to any earthmoving or drainage construction of the development.

To the greatest possible extent, the plan shall avoid the concentration of flow and shall provide for dissipation of velocities at all concentrated discharge points.

Stormwater runoff from roads and structures shall have suitable retention or pollution controls to minimize pollution and runoff entering a stream, watercourse, wetland or aquifer recharge area.

Where drainage swales are provided, they shall be constructed to afford a minimum amount of land disturbance. They should be placed between trees with a minimum side clearance of disturbance. They should follow natural drainage courses and contours.

Drainage design standards.

The drainage systems shall be designed in conformance with accepted engineering standards. A report on storm drainage calculations shall be prepared, signed and sealed by a licensed professional engineer in the State of New Jersey, in sufficient detail for a review of these calculations. Includes shall be maps, plats or other materials necessary to establish areas tributary to the site as well as areas within the site tributary to a specific drainage structure, methodology for selection of various variables and capacity of proposed systems.

The design considerations shall include and not be limited to drainage areas, runoff calculations, flow velocities, storm drains, pipelines, inlet designs and manholes.

All stormwater drainage facilities shall be designed using a twenty-five-year-design storm. Detention or retention facilities shall be designed utilizing a one-hundred-year-design storm. A twenty-five-year storm shall have a one-hour intensity of 2.6 inches of rainfall and a one-hundred-year storm shall have a one-hour intensity of 3.3 inches of rainfall.

Stormwater facilities include, but are not limited to, dry wells, swales, basins, porous pavement, drainage pipes or a combination of these, or other methods.

All applications for subdivision and site plan approval shall be required to maintain the rate of stormwater runoff for the property to no more than the rate of runoff from the lands in its present state, both during and after construction.

Methodology for determining runoff shall conform to one of the following:

Soil Conservation Service runoff equation, runoff curve numbers and dimensionless unit hydrograph as described in National Engineering Handbook Section 4, Hydrology, United States Department of Agriculture, Soil Conservation Service, August 1972, and Technical Release Number 55 - Urban Hydrology for Small Watersheds, United States Department of Agriculture, Soil Conservation Service, Engineering Division, January 1975.

The rational formula and runoff coefficients, published in the Handbook of Applied Hydrology, Ven Te Chow, Editor, McGraw-Hill, 1964.

Interceptor ditches shall be established above all cut/fill slopes and the intercepted water shall be conveyed to a stable channel or watercourse with adequate capacity.

(f)

Stormwater retention/detention basins may be depressions in parking areas, excavated basins, basins created through use of curbs, stabilized earth berms or dikes or any other form of grading which serves to temporarily impound and store water. The following standards shall apply:

Where retention ponds are to be provided, dual purpose controls for storing excess water runoff and a settling period for particulate matter shall be provided.

A routing study shall be provided and shall conform to Technical Release Number 55 - Urban Hydrology for Small Watersheds, United States Department of Agriculture, Soil Conservation Service, Engineering Division, January 1975, or any other acceptable method.

Detention and retention areas.

[a]

Detention areas shall be designed to contain stormwater discharge. Peak discharge from a one-hundred-year design storm after development shall be controlled to a rate of discharge equal to the peak discharge of a twenty-five-year design storm prior to development.

[b]

Retention areas shall accept all surface waters from a one-hundred-year design storm and absorb these waters within a seven-day period.

If earth berms or dikes are used to create the impounding area, they shall be provided with an emergency spillway or outlet to pass the one-hundred-year storm and be adequately stabilized and the slopes protected with vegetative cover, paving or riprap to protect against failure or breaching.

Outlet pipes shall be at least six inches in diameter to facilitate cleaning. Trash racks shall be installed to prevent clogging of the outlet pipe. Maximum bar spacing shall be 75% of outlet pipe size. Trash racks shall have area openings totaling five times the area openings of the outlet pipe.

Suitable linings shall be placed upstream and downstream from principal inlets or outlets to prevent scour and erosion.

[7]

Embankments shall have side slopes not steeper than 3:1.

[8]

Safety ledges shall be constructed when side slopes steeper than 3:1 have been specifically allowed and where basins have a permanent pool of water. These ledges shall be at least four feet in width with one located one to l 1/2 feet above and the other located 2 1/2 to three feet below the permanent water surface.

[9]

Basin bottoms shall be designed to protect against residual water periods to prevent mosquito breeding.

[10]

Fencing and/or vegetative screening may be required around basins.

[11]

Basins shall be vegetated with suitable plant and natural materials consistent with the environment.

[12]

A percolation test and soil log is required per 1/2 acre of surface area of a proposed retention basin.

(g)

Ground absorption systems. Ground absorption systems such as dry wells, porous pavement, porous piping systems or the like shall be used only where the infiltration rate of the receiving soil is acceptable as determined by percolation tests and soil logs. One percolation test and soil log is required per absorption unit.

(h)

Drainage channels.

Drainage channels shall be designed utilizing Manning's formula. One foot of freeboard above the design storm flow line shall be provided. Channel lining shall be suitable for the design velocity in accordance with Standards for Soil Erosion and Sediment Control in New Jersey, adopted by the New Jersey State Soil Conservation Committee, as may be amended.

Where velocities exceed five feet per second, the tributary area exceeds 10 acres or where the channel has side slopes of greater than one vertical to three horizontal, channels shall be riprap lined.

(i)

Pipe sizes.

The minimum pipe size shall be 15 inches, and pipes shall be of reinforced concrete. Pipe strength shall be adequate to withstand external loading, but in no case shall it be less than Class III strength.

Slopes shall be designed for all pipes so that a minimum velocity of two feet per second shall be obtained when the pipe is flowing 1/2 full.

Where pipe sizes are increased, the invert of the larger pipe shall be dropped so that the tops of the pipes shall be at the same elevations. All storm sewers shall have a minimum cover of two feet.

(j)

Inlets.

Inlets, or catch basins, shall be spaced so that the run of water does not exceed 350 feet and so that flow to any inlet does not exceed 4.5 cubic feet per second for the design storm. Manholes or inlets shall be placed wherever a change in grade or alignment of a storm drain occurs, but in any case not more than 350 feet apart.

Inlets shall be Type B unless no adjoining curb exists or is proposed, in which case inlets may be Type A, if approved by the approving authority.

The outlet pipe shall be six inches above the bottom of the inlet to catch sand and gravel.

(k)

Headwalls. Headwalls shall be provided at all pipe inlets and outlets. Headwalls shall be constructed of minimum 3,000 pounds per square inch concrete. Minimum wall thickness shall be 12 inches. Minimum height above pipe invert shall be l 1/2 times the pipe diameter. Minimum overall width shall be three times the pipe diameter. The apron shall extend past the outlet l 1/2 times the pipe diameter.

(l)

Drainage easements.

Where a subdivision or site is traversed by a natural stream, watercourse or drainageway, there shall be provided a public drainageway conforming substantially with the lines of such watercourse and such further width or construction, or both, as will be adequate for the purpose.

Easements shall contain the drainageway and be sufficiently wide enough to contain the flow from the design storm as detailed in Subsection B herein. Minimum easement width shall be 20 feet; 10 feet on each side of the center line of the watercourse.

The approving authority, where it deems advisable, may require the conveyance of such right-of-way in fee simple to the Borough.

Sediment control design standards.

All applications not meeting the minimum requirement for filing of a soil mining permit or submission of a soil erosion and sedimentation control plan with the Local Conservation District of the Soil Conservation Service shall be required to prepare a plan to control soil erosion and sedimentation. This plan shall be included in all site plan and subdivision applications and shall be reviewed by the approving authority based upon Standards for Soil Erosion and Sediment Control in New Jersey, adopted by the New Jersey State Soil Conservation Committee.

All applications meeting the minimum requirements for soil mining shall submit an application for soil mining in accordance with the Riverdale Soil Mining Ordinance.[2]

Editor's Note: See Ch. 140, Soil Removal.

All applications meeting the minimum requirements for submission of a soil erosion and sedimentation control plan shall apply and obtain approval from the Local Conservation District of the Soil Conservation Service.

Grading standards. The following grading standards shall apply to all development controlled by this chapter except that development within the MF-1 District shall be subject to the approval of the reviewing authority and based on comments from the reviewing authority's engineer and other professionals in order to accommodate development on steeper grades and to accommodate deeper excavation cuts and specialized structures such as retaining walls associated with such development.

[Amended 12-17-2001 by Ord. No. 17-2001]

All applications shall be subject to the provisions of Subsection C herein and the United States Army Corps of Engineers, where applicable.

Cut or fill slopes for embankments outside of the graded portion of the street shall make use of rubble walls, wherever possible.

Cut or fill slopes exceeding a ratio of one foot vertical to three feet horizontal require special methods of embankment stabilization. These include seedbed preparation, adjusted fertilization levels, supplemented irrigation, adapted seedlings or plants and site protection until vegetative cover is established. A detailed outline of procedures and specifications shall be submitted by the applicant.

Except as provided in Subsection D(6) herein, cut slopes shall be no steeper than one vertical to two horizontal; subsurface drainage shall be provided as necessary for stability.

Except as provided in Subsection D(6) herein, fill slopes shall be no steeper than one vertical to two horizontal.

Cut or fill slopes exceeding a ratio of one vertical to two horizontal shall be considered by the approving authority only in special situations. The applicant must establish that a physical hardship condition exists with the land and must also indicate the special methods of embankment stabilization to be utilized. These may include hand-placed riprap, existence of exposed bedrock or other approved methods.

Retaining walls.

All retaining walls or facings with a total vertical projection in excess of four feet shall be designed as structural members keyed into stable foundations and capable of sustaining the design loads. Structural calculations and details shall be prepared by a licensed professional engineer of the State of New Jersey and submitted for all such retaining walls and facings.

Whenever two or more retaining walls are proposed where the average slope from the toe of the lowest wall to the top of the highest wall has an average slope equal to or greater than one vertical to two horizontal, an engineering analysis of the entire sloped area shall be submitted.

(8)

Where grading is proposed over an existing utility line, a minimum of four feet of soil covering shall be required above all such pipelines.

Editor's Note: See Ch. 104, Flood Hazard Control, and Ch. 140, Soil Removal.

§ 149-54 Utility improvements.

Gas, electric, telephone and cable television service.

Gas, electric, telephone and cable television service shall be provided by the applicant in concert with the appropriate public utility providing such service. Said service on the site shall be provided as a part of an underground system.

If such facilities cannot be reasonably provided due to topographic or geologic conditions of the land or due to technological circumstances, and where the applicant can adequately demonstrate the lack of feasibility of same to the satisfaction of the approving authority, exemption of this requirement may be granted.

Where existing utility lines such as electric and telephone poles exist off-tract and require relocation as a result of the proposed development, the approving authority shall be assured that said relocation shall not create or continue any hazardous conditions.

Water supply and sanitary sewage disposal.

Adequate provisions for water supply and sanitary sewage disposal shall be indicated. Said facilities shall include and not be limited to approvals, where appropriate, of the serving utility, Department of Health and Fire Prevention Bureau. The locations of all proposed fire hydrants or similar facilities shall be indicated on the plan, and said areas shall provide for appropriate fire lanes or protective areas, which shall not be impeded by parking areas or standing vehicles or other obstructions. Water mains shall be adequately sized to handle anticipated service, and street lines shall be looped, unless specifically otherwise approved.

Water mains and services shall conform to the following standards:

Mains: ductile iron, Class 5, minimum six-inch diameter service connection; copper, Type K, three-fourths-inch minimum, or plastic, ASTM D-2581, Type II, three-fourths-inch minimum.

Depth: minimum 48 inches to top of pipe, except where plastic pipe is utilized, which shall have 60 inches' depth. A wire sensor shall be installed with plastic pipe for magnetic detection.

Hydrants. Hydrants shall have a maximum spacing of 500 feet. Hydrants shall be installed at all high points, at intersections, and at the end of streets where length of water main exceeds 200 feet from nearest hydrant.

Valves. Full size line valves for shut off shall be located at a maximum spacing of 1,000 feet. Any branch of a main, one valve shall be installed on the main line, plus one on the branch line.

Utility locations in culs-de-sac. Utilities shall not be permitted within the center islands of culs-de-sac.

Utility easements.

For access to and maintenance of utilities within or crossing private property, utility easements shall be provided to the Borough. For pipelines or buried utilities, easements shall be a minimum of 10 feet wide, centered above the buried utility.

For watercourses, easements shall contain the drainageway and be sufficiently wide enough to contain the flow from the design storm as detailed in § 149-53B(2)(a) herein.

§ 149-55 Additional design standards.

Design standards for physically handicapped persons.

When required.

All plans and specifications for the construction or remodeling of any public building in accordance with Chapters 220, 221 and 224 of the 1975 Laws of New Jersey, and amendments thereto, shall provide facilities for the physically handicapped in accordance with Chapters 220, 221 and 224 of the 1975 Laws of New Jersey and amendments thereto.

The Construction Official should be contacted for detailed information on the applicability and requirement of these laws.

Design of facilities and buildings.

All public buildings shall contain at least one principal entrance accessible to and usable by physically handicapped persons, which shall be either ramped or at ground level.

Elevators of sufficient size to accommodate a wheelchair may be required in multistory public buildings as provided by law.

Parking lot design for handicapped persons.

The following shall be the minimum number of required parking spaces designed for handicapped persons:

	Number of Required Parking Spaces	Number of Required Handicapped Persons Parking Spaces
	2 to 50	1
	51 to 200	2
	200 or more	1% of the total number of required parking spaces

Said spaces shall be most accessible and approximate to the building or buildings which the parking spaces serve.

Each space or group of spaces shall be identified with a clearly visible sign displaying the international symbol of access along with the following wording: "These spaces reserved for physically handicapped drivers."

Each space shall be 12 feet wide to allow room for persons in wheelchairs or on braces or crutches to get in and out of either side of an automobile onto level, paved surface suitable for wheeling and walking.

Where possible, such spaces shall be located so that persons in wheelchairs or using braces or crutches are not compelled to wheel or walk behind parked cars.

(f)

Where applicable, curb ramps shall be provided to permit handicapped people access from parking areas to sidewalks.

Surface slope. No development shall take place where the ground surface slope exceeds 20%; except that in the MF-1 Zone, such ground surface slopes may be disturbed, provided that no more than 60% of the land area having a surface with a slope in excess of 20% shall be disturbed, subject to the approval of the reviewing authority and based on comments from the reviewing authority's engineer and other professionals. In the MF-1 Zone, all slopes in excess of 20% which are to be disturbed shall be clearly delineated in a separate submission as part of all site plans. The reviewing authority's approval shall be exercised in connection with its site plan review and shall not necessitate a waiver except where the 60% limitation is exceeded.

[Amended 12-17-2001 by Ord. No. 17-2001]

Monuments. Monuments shall be provided as required in N.J.S.A. 46:23-9.11 and shall be of such size, shape and location as provided by said statute. The location of all existing and proposed monuments shall be reviewed by the approving authority's engineer.

Street furniture. Street furniture shall include, but is not limited to, the following: benches, street planters, bicycle racks, wastepaper containers, mailboxes, phone booths, etc. Where applicable, said facilities shall be constructed in accordance with the appropriate agency requirements as well as standards published in the following: Site Planning Standards, Joseph DeChiara and Lee Koppelman, McGraw-Hill Company, 1978.

Performance standards.

General application. All uses shall be subject to the following performance standards and procedures. A sworn statement by the applicant that said use shall be operated in accordance with the performance standards set forth herein shall be submitted.

Determination where performance standards are to be measured. The locations where determinations are to be made for measurement of performance standards shall be made as follows:

At property lines of the use creating such element, for vibration, glare, air pollution, odor, dust, water pollution or noise.

At the point of emission for smoke.

Recycling of recyclable materials in multifamily housing.

[Added 3-17-2008 by Ord. No. 2-2008]

MULTIFAMILY HOUSING DEVELOPMENT

For purposes of this subsection, the following terms shall have the following meanings:

A building containing three or more dwelling units occupied or intended to be occupied by persons living independently of each other, or a group of such buildings.

RECYCLING AREA

Space allocated for collection and storage of source-separated recyclable materials.

There shall be included in any new multifamily housing development that requires subdivision or site plan approval indoor and/or outdoor recycling areas for the collection and storage of residentially generated recyclable materials. The number of sites and dimensions of the recycling areas shall be sufficient to accommodate recycling bins or containers which are of adequate size and number and which are consistent with anticipated usage and with current methods of collection in the area in which the project is located. The number of sites and dimensions of the recycling areas and the bins or containers shall be determined in consultation with the Municipal Recycling Coordinator and shall be consistent with the district recycling plan adopted pursuant to Section 3 of P.L. 1987, c. 102 (N.J.S.A. 13:1E-99.13) and any applicable requirements of the Municipal Master Plan adopted pursuant to Section 26 of P.L. 1987, c. 102.

The recycling areas shall be conveniently located for the residential disposition of source-separated recyclable materials, preferably near, but clearly separated from, a refuse dumpster.

The recycling areas shall be well lit and shall be safely and easily accessible by recycling personnel and vehicles. Collection vehicles shall be able to access the recycling areas without interference from parked cars or other obstacles. Reasonable measures shall be taken to protect the recycling areas and the bins or containers.

The recycling areas or the bins or containers placed therein shall be designed so as to provide protection against adverse environmental conditions which might render the collected materials unmarketable. Any bins or containers which are used for the collection of recyclable paper or cardboard and which are located in an outdoor recycling area shall be equipped with a lid or otherwise covered so as to keep the paper or cardboard dry.

Signs clearly identifying the recycling areas and the materials accepted therein shall be posted adjacent to all points of access to the recycling areas. Individual bins or containers shall be equipped with signs indicating the materials to be placed therein.