A. 
The purpose of this article is to establish and define the public improvements which will be required by Newtown Borough Council to be constructed or cause to be constructed by the applicant. Inspection of improvements will be the responsibility of the Newtown Borough Engineer.
B. 
All improvements will be constructed in accordance with the specifications of Newtown Borough and this chapter.
A. 
The improvements required by this chapter are minimum requirements. Newtown Borough reserves the right in any case to increase the same if conditions so warrant in order to protect the health, safety, and welfare of Borough residents.
B. 
Before the Borough Council shall cause its approval to be endorsed on the final plans of any subdivision or land development and as a requirement for the approval thereof, the developer shall enter into a written agreement with the Borough in the manner and form set forth by the Borough Solicitor, to guarantee the construction and installation of all improvements at the developer's expense required by this chapter. When requested by the developer, in order to facilitate financing, the Borough Council shall furnish the developer with a signed copy of a resolution indicating approval of the final plan contingent upon the developer obtaining satisfactory financial security. The final plan or record plan shall not be signed nor recorded until the financial improvements agreement is executed. The resolution or letter of contingent approval shall expire and be deemed to be revoked if the financial security agreement is not executed within 90 days, unless a written extension is granted by the Borough Council.
C. 
No plan shall receive final approval unless the streets shown have been improved to a permanently passable condition, or improved as may be required by this chapter and any walkways, bikeways, curbs, gutters, streetlights, fire hydrants, shade trees, water mains, sanitary sewers, storm drains and other improvements as may be required by this chapter have been installed. In lieu of the completion of any improvements, the developer shall furnish to the Borough a bond with such surety as the Borough Council shall approve, in an amount sufficient to cover the costs of any improvements which may be required. Such bond, or other security, shall provide for and secure to the public the completion of any improvements which may be required on or before the date fixed in the formal action of approval or accompanying agreement for completion of improvements. The amount of financial security to be posted for completion of the required improvements shall be equal to 110% of the cost of completion estimated as of 90 days following the date of scheduled for completion by the developer. Annually the Borough may adjust the amount of the financial security by comparing the actual cost of the improvements which have been completed and the estimated cost for the completion of the remaining improvements as of the expiration of the 90th day after either the original date scheduled of completion or a rescheduled date of completion. Subsequent to said adjustment, the Borough may require the developer to post additional security in order to assure that the financial security equals said 110%. Any additional security shall be posted by the developer in accordance with this section.
D. 
The amount of financial security required shall be based upon an estimate of the cost of completion of the required improvements, submitted by an applicant and prepared by a professional engineer licensed as such in the Commonwealth of Pennsylvania and certified by such engineer to be a fair and reasonable estimate of such cost. The Borough, upon recommendation of the Borough Engineer, may refuse to accept such estimate for good cause shown. If the applicant or developer and the Borough are unable to agree upon an estimate, the procedures set forth in the Pennsylvania Municipalities Planning Code, Article V, Section 509(g)[1] shall be followed. If the developer requires more than one year from the date of posting of the financial security to complete the required improvements, the amount of financial security may be increased by an additional 10% for each one-year period beyond the first anniversary date from posting of financial security or to an amount not exceeding 110% of the cost of completing the required improvements as reestablished on or about the expiration of the preceding one-year period by using the above bidding procedure.
[1]
Editors Note: See 53 P.S. § 10509(g).
E. 
In the case where development is projected over a period of years, the Borough Council may authorize submission of final plans by section or stages of development subject to such requirements or guarantees as to improvements in future stages of development as it finds essential for the protection of any finally approved section of the development. As the work of installing the required improvements proceeds, the developer may request the Borough to release, from time to time, portions of the escrow fund, necessary for payment to the contractor performing the work. Any such request shall be in writing, addressed to the Borough Council, and the Council shall have 45 days from receipt of such request within which to allow the Borough Engineer to certify, in writing, to the Council that the improvements have been completed in accordance with the approved plan. If the Borough Council fails to act within the forty-five-day period, the Council shall be deemed to have approved the release of funds as requested. The Council may, prior to final release at the time of completion and certification by the Borough Engineer, require retention of 10% of the estimated cost of the aforesaid improvements.
F. 
Where the Borough accepts dedication of all or some of the required improvements following completion, the Borough may require the posting of financial security to secure structural integrity of the improvements in accordance with the design and specifications as depicted on the final plan for a term not to exceed 18 months from the date of acceptance of dedication. The amount of this financial security shall not exceed 15% of the actual cost of installation of the improvements.
G. 
If financial security has been provided in lieu of the completion of improvements required as a condition for the final approval of a plan as set forth in this section, the Borough shall not condition the issuance of building, grading or other permits relating to the construction of the improvement, including buildings, upon lots or land as depicted upon the final plan. Moreover, if an escrow fund has been established, occupancy permits for any building or buildings to be erected shall not be withheld following: the improvement of the streets providing access to and from existing public roads to such building or buildings to a permanently passable condition as well as the completion of all other improvements as depicted upon the approved plan, either upon the lot or lots or beyond the lot or lots in question if such improvements are necessary for the reasonable use of or occupancy of the building or buildings.
H. 
Release from improvement bond.
(1) 
When the developer has completed all of the necessary and appropriate improvements, the developer shall notify the Borough by certified or registered mail of the completion of the improvements and shall send a copy to the Borough Engineer. The Borough shall, within 10 days after receipt of such notice, direct and authorize the Borough Engineer to inspect all of the improvements. The Borough Engineer shall file a report with the Borough and shall mail a copy of the report to the developer. The report shall be made within 30 days after receipt by the Borough Engineer of the authorization from the Borough. This report shall indicate approval or rejection of the improvements, and if the improvements, or any portion thereof, shall not be approved by the Borough Engineer, this report shall contain a statement of reasons for such nonapproval.
(2) 
The Borough shall notify the developer, within 15 days of receipt of the engineer's report, in writing, by certified or registered mail, of its actions in response to the Borough Engineer's review of improvements.
(3) 
If the Borough or the Borough Engineer fails to comply with the time limitation provisions, all improvements will be deemed to have been approved and the developer shall be released from all liability, pursuant to its performance guarantee bond or other security agreement.
(4) 
If any portion of the improvements shall not be approved or shall be rejected by the Borough, the developer shall proceed to complete the improvements and, upon completion, the same procedure of notification, as outlined, shall be followed.
(5) 
The applicant shall reimburse the Borough for the reasonable and necessary expense incurred for the inspection of such improvements. Such reimbursement shall be based upon a schedule adopted by resolution and shall be reasonable and in accordance with the ordinary and customary fees charged by the Borough Engineer or consultant for work performed for similar services in the Borough, and in no event shall the fees exceed the rate or cost charged by the Borough Engineer or consultant to the Borough when fees are not reimbursed or otherwise imposed on applicants. In the event that the applicant disputes the amount of such expense in connection with inspection of improvements, the procedure set forth in the Pennsylvania Municipalities Planning Code (Act 247, as amended), Section 510(g), subsections (1) through (5),[2] shall be adhered to.
[2]
Editors Note: See 53 P.S. § 10510(g)(1) through (5).
I. 
Remedies for completion of improvements. In the event that any improvements which may be required have not been installed as provided in this chapter or in accord with the approved final plan, the Borough shall enforce any corporate bond, or other security by appropriate legal and equitable remedies. If proceeds of such bond or other security are insufficient to pay the cost of installing or making repairs to all the improvements covered by the security, the Borough may, at its option, install part of such improvements in all or part of the subdivision or land development and may institute appropriate legal or equitable action to recover the moneys necessary to complete the remainder of the improvements. All of the proceeds whether resulting from the security or from any legal or equitable action brought against the developer or both, shall be used solely for the installation of the improvements covered by such security, and not for any other Borough purposes.
A. 
The construction of streets, roads, lanes and driveways as shown upon final plans and as contained in contract agreements shall in every respect conform to such requirements as Newtown Borough may, by this chapter or other resolution, require for the construction of streets.
B. 
Specifications. The performance and material specifications for improvements shall be those contained in Pennsylvania Department of Transportation's Specifications Form 408, as last revised. The design and construction requirements shall be those indicated in the typical street cross section in the Appendix of this chapter.[1]
[1]
Editor's Note: Said Appendix is included as an attachment to this chapter..
C. 
All streets shall be graded to:
(1) 
The grades shown on the street profiles and cross-section plan submitted and approved with the final plan;
(2) 
The full width of the right-of-way.
D. 
Along the existing street on which a subdivision or land development abuts (hereinafter called a boundary street) improvements shall be made to the street. The improvements to the boundary street shall be determined by the width of the required cartway and built to the specifications established by Newtown Borough.
The developer shall erect at every street intersection a street sign or street signs, having thereon the names of the intersecting streets, and traffic control signs as specified by the Borough Engineer. At intersections where streets cross, there shall be at least two such street signs, and at the intersections where one street ends or joins another street, there shall be at least one such street sign. Street signs shall be of the size, design, materials, and colors required by the Borough and shall be installed prior to the issuance of an occupancy permit for the properties which are part of the subdivision or land development.
A. 
Where appropriate, the applicant shall install or cause to be installed, at the applicant's expense, streetlights serviced by underground conduit in accordance with a plan to be prepared by the applicant's engineer and approved by the Philadelphia Electric Company and Borough Council. Provisions shall be made for energizing said lights prior to the issuance of an occupancy permit for the properties which are part of the subdivision or land development. The owner shall be responsible for all costs involved in lighting the street until such time that the streets are accepted or condemned as public street by Borough Council.
B. 
Streetlights shall be of the size, design, materials, and colors required by the Borough.
A. 
Monuments shall be placed at each change in direction of boundary; two to be placed at each street intersection and one on one side of each street at angle points and at the beginning and end of curves. Utility easements shall be monumented at their beginning and their end; and areas to be conveyed for public use shall be fully monumented at their external boundaries.
B. 
Monuments shall be placed in the ground after final grading is completed at a time specified by the Borough Engineer. The monument shall be precast concrete with a reinforced steel rod. The monument shall be at least four inches square at top and six inches at bottom and at least 24 inches in depth, with surface edges beveled.
C. 
The Borough Engineer shall check all monuments for accuracy or their accuracy shall be verified by the applicant's engineer. Accuracy shall be within three 3/100 of a foot.
A. 
General. The applicant shall construct and/or install such drainage structures, on-site and off-site, as necessary to:
(1) 
Prevent erosion damage and to satisfactorily carry off or detain and control the rate of release of surface waters.
(2) 
Encourage all runoff control measures to infiltrate the stormwater into the ground to aid in the recharge of groundwater.
[Amended 4-10-2012 by Ord. No. 725]
(3) 
Carry surface water to the nearest adequate street, storm drain, detention basin, natural watercourse or drainage facility.
(4) 
Take surface water from the bottom of vertical grades, to lead water away from springs, and to avoid excessive use of cross gutters at street intersections and elsewhere.
(5) 
Handle the anticipated peak discharge from the property being subdivided or developed and the existing runoff being contributed from all land at a higher elevation in the same watershed.
(6) 
Maintain the adequacy of the natural stream channels. Accelerated bank erosion shall be prevented by controlling the rate and velocity of runoff discharge to these watercourses, so as to avoid increasing the occurrence of stream bank overflow.
(7) 
Preserve the adequacy of existing culverts. Bridges and similar structures shall be preserved by suppressing the new flood peaks created by new land development.
B. 
Retention of existing watercourses and natural drainage features.
(1) 
Whenever a watercourse stream or intermittent stream is located within a development site, it shall remain open in its natural state and location and shall not be piped.
(2) 
The existing points of natural discharge onto adjacent property shall not be altered without the written approval by the affected landowners.
(3) 
No stormwater runoff or natural drainage shall be so diverted as to overload existing drainage systems, or create flooding or the need for additional drainage structures on private properties or public lands.
(4) 
The Borough Council may require the developer to provide a permanent easement along any watercourse located within or along the boundary of any property being subdivided or developed. The purpose of such easement shall be for the maintenance and/or relocation of the channel of any watercourse. The required width of such easement shall be determined by the Borough Engineer, U.S. Army Corps of Engineers, Pennsylvania Department of Environmental Protection or public agency having jurisdiction but, in no case, shall such easement be less than 50 feet in width.
C. 
Design criteria - stormwater management.
[Amended 6-14-2005 by Ord. No. 663; 4-10-2012 by Ord. No. 725]
(1) 
The provisions of the Newtown Borough Neshaminy Creek Watershed Act 167 Stormwater Management Ordinance (Ordinance 712, as amended), a true and correct copy of which is available from Newtown Borough, are incorporated into this Newtown Borough Subdivision and Land Development Ordinance by reference.[1] Where the provisions of this chapter conflict with provisions of the Newtown Borough Neshaminy Creek Watershed Act 167 Stormwater Management Ordinance, the strictest provisions, as determined by the Newtown Borough Engineer, shall apply.
[1]
Editor's Note: The Neshaminy Creek Watershed Act 167 Stormwater Management Ordinance is in Ch. 473, Stormwater Management, of this Code.
(2) 
No regulated activities, as identified in § 473-5 of the Newtown Borough Neshaminy Creek Watershed Act 167 Stormwater Management Ordinance, shall be approved unless approval has been obtained for a stormwater management plan which complies with the provisions of this chapter and the Newtown Borough Neshaminy Creek Watershed Act 167 Stormwater Management Ordinance.
(3) 
This section and the applicable provisions of the Newtown Borough Neshaminy Creek Watershed Act 167 Stormwater Management Ordinance shall apply to all areas of Newtown Borough within the Neshaminy Creek and Little Neshaminy Creek Watershed.
D. 
Design criteria - detention and retention basins.
(1) 
A flow system with capacity for the 100-year storm shall be provided to carry runoff to a detention basin. When the capacity of the storm drain pipe is exceeded, an overflow system shall be of sufficient capacity to carry the runoff difference between the 100-year storm peak flow rate and the capacity of the storm drain pipe system. The 100-year storm peak shall be calculated by the Soil Cover Complex Method.
(2) 
Unless permitted as a special exception by the Zoning Hearing Board, detention basins shall not be located within floodplains, nor within areas of floodplain soils, with the exception that areas of alluvial soils may be utilized if proof is accepted by the Borough Council that the area is not subject to flooding.
(3) 
Detention basins shall be designed to facilitate regular maintenance, mowing and periodic desilting and reseeding.
(4) 
Whenever possible, the side slopes and basin shape shall conform to the natural topography. When such design is impractical, the construction of the basin shall utilize slopes as flat as possible to blend the structure into the terrain.
(5) 
In residential development, shallow broad basins shall be provided.
(6) 
The maximum slope of the earthen detention basin embankments shall be four horizontal to one vertical.
(7) 
The top or toe of any slope shall be located a minimum of five feet from any property line.
(8) 
The minimum top width of the detention basin berm shall be 10 feet.
(9) 
In order to insure proper drainage to the basin bottom, a minimum grade of 2% shall be maintained for areas of sheet flow. For channel flow, a minimum grade of 1% shall be maintained.
(10) 
A collecting swale shall be provided to drain basins.
[Amended 4-10-2012 by Ord. No. 725]
(11) 
If permanent ponds are used, the developer shall demonstrate that such ponds are design to protect the public health and safety.
(12) 
Emergency spillways.
(a) 
Emergency overflow facilities shall be provided for detention facilities to handle runoff in excess of design flows.
(b) 
Whenever possible, the emergency spillway for detention basins shall be constructed on undisturbed ground.
(c) 
Emergency spillways shall be constructed of grass pavers or other material approved by the Borough Engineer.
(d) 
All emergency spillways shall be constructed so that the detention basin berm is protected against erosion.
(e) 
The minimum capacity of all emergency spillways shall be the peak flow rate from the 100-year design storm after development.
(f) 
The construction material of the emergency spillways shall extend along the upstream and downstream berm embankment slopes.
(g) 
The upstream edge of the emergency spillway shall be a minimum of three feet below the spillway crest elevation.
(h) 
The downstream slope of the spillway shall, as a minimum, extend to the toe of the berm embankment.
(i) 
The emergency spillway shall not discharge over earthen fill and/or easily eroded material.
(j) 
The minimum freeboard shall be one foot. Freeboard is the difference between the design flow elevations in the emergency spillway and the top of the settled detention basin embankment.
[Amended 6-14-2005 by Ord. No. 663]
(13) 
Antiseep collars.
(a) 
Antiseep collars shall be installed around the pipe barrel within the normal saturation zone of the detention basin berms and shall be poured in place.
(b) 
The antiseep collars and their connections to the pipe barrel shall be watertight.
(c) 
The antiseep collars shall extend a minimum of two feet beyond the outside of the principal pipe barrel.
(d) 
The maximum spacing between the collars shall be 14 times the minimum projection of the collar measured perpendicular to the pipe.
(e) 
A minimum of two antiseep collars shall be installed on each outlet pipe.
(14) 
Outlet pipes.
(a) 
All outlet pipes through the basin berm shall be reinforced concrete pipe with watertight joints;
(b) 
Energy-dissipating devices (riprap, end sills, etc.) shall be placed at all basin outlets.
(c) 
Outlet pipes shall discharge to a defined watercourse having a capacity to carry proposed discharge flows.
(15) 
Perforated risers.
(a) 
A perforated riser shall be provided at each outlet of all detention basins during construction for sediment control.
(b) 
The riser shall extend to a maximum elevation of two feet below the crest elevation of the emergency spillway.
(c) 
The perforated riser shall be designed so that the rate of outflow is controlled by the pipe barrel through the basin berm when the depth of water within the basin exceeds the height of the riser.
(d) 
Circular perforations with a maximum diameter of one inch shall be spaced eight inches vertically and 12 inches horizontally.
(e) 
The perforations shall be clearly cut and shall not be susceptible to enlargement.
(f) 
All metal risers shall be suitably coated to prevent corrosion and wrapped with geotextile fabric to filter sediment.
(g) 
A trash rack or similar appurtenances shall be provided to prevent debris from entering the riser.
(h) 
All risers shall have a concrete base attached with a watertight connection.
(i) 
The base shall be sufficient weight to prevent flotation of the riser.
(j) 
An antivortex device, consisting of a thin vertical plate normal to the basin berm, shall be provided on the top of the riser.
(k) 
Any proposed alternative to the temporary perforated riser must be approved by the Borough Engineer and Bucks County Conservation District.
[Added 4-10-2012 by Ord. No. 725]
Table I
Maximum Permissible Velocities (feet/second) for Channels Lined with Vegetation
NOTE: These values subject to the 7 limitations below
[Amended 4-10-2012 by Ord. No. 725]
Cover
Slope Range
(percent)
Erosion-Resistant Soil1
Easily Eroded Soil2
Bermuda grass
0 to 5%
6.03
5.0
Kentucky bluegrass
5.53
4.5
Tall fescue (endophyte-free)
5.53
4.5
Grass legume mixture
4.5
3.5
Bermuda grass
5 to 10%
5.53
4.5
Kentucky bluegrass
5.0
4.0
Tall fescue (endophyte-free)
5.0
4.0
Grass legume mixture
3.5
3.0
Modified from USDA-NRCS
1
Cohesive (clayey) fine grain soils and coarse grain soils with a plasticity index of 10 to 40 (CL, CH, SC and GC). Soils with K values equal to or less than 0.37.
2
Soils with K values greater than 0.37.
3
Use velocities exceeding 5 feet per second only where good cover and proper maintenance can be obtained.
Additional notes regarding the use of table.
1.
A velocity of 3.0 feet per second should be the maximum if, because of shade, soils or climate, only a sparse cover can be established or maintained.
2.
A velocity of 3.0 to 4.0 feet per second should be used under normal conditions if the vegetation is to be established by seeding.
3.
A velocity of 4.0 to 5.0 feet per second should be used only in areas if a dense, vigorous sod is obtained quickly or if water can be diverted out of the waterway while vegetation is being established.
4.
A velocity of 5.0 to 6.0 feet per second may be used on well-established, good quality sod. Special maintenance may be required.
5.
A velocity of 6.0 to 7.0 feet per second may be used only on established, excellent quality sod, and only under special circumstances in which flow cannot be handled at a lower velocity. Under these conditions, special maintenance and appurtenant structures will be required.
6.
If stone centers, or other erosion resistant materials supplement the vegetative lining, the velocities in the above table may be increased by 2.0 feet per second.
7.
When base flow exists, a rock-lined low-flow channel should be designed and incorporated into the vegetative lined channel section.
Wherever vegetative linings are proposed, a suitable temporary liner should be provided unless the channel is sodded.
E. 
Design criteria. Drainage channels and swales.
(1) 
All drainage channels shall be designed to prevent erosion of the bed and banks.
(2) 
The maximum permissible flow velocity shall not exceed those outlined in Table 1.1
(3) 
Suitable stabilization shall be provided where required to prevent erosion of the drainage channels.
(4) 
Any vegetated drainage channel requiring mowing of the vegetation shall have a maximum grade of four horizontal to one vertical on those areas to be mowed.
F. 
Design criteria. Stormwater collection and pipe system.
(1) 
Storm sewers, culverts and related installations shall be provided:
(a) 
To permit the unimpeded flow of natural watercourses in such a manner as to protect the natural character of said watercourses and to provide regulated discharge.
(b) 
To insure adequate drainage of all low points along the line of streets.
(c) 
To intercept stormwater runoff along streets at intervals reasonably related to the extent and grade of the area drainage and to prevent substantial flow of water across intersections.
(2) 
The design discharge from drainage areas contributing to the system may be determined by use of the Rational Equation (Q=CIA) when the total drainage area does not exceed 100 acres.
(a) 
The runoff coefficients to be utilized for the Rational Equation are those set forth in Appendix B, Table B-7, of Chapter 473, Stormwater Management.
[Amended 4-10-2012 by Ord. No. 725]
(b) 
The coefficients in the above tabulations are applicable for storms of ten-year frequency and less. The coefficients are based on the assumption that the design storm does not occur when the ground is frozen. Less frequent, higher intensity storms will required the use of higher coefficients.
(c) 
For less frequent storms, the coefficients can be used if they are multiplied by the following factors for the return frequency required:
[Amended 4-10-2012 by Ord. No. 725]
Storm Frequency
(years)
Factors
10 and less
1.0
25
1.1
50
1.2
100
1.25
(d) 
The rainfall intensity "I" curves presented in the Pennsylvania Department of Transportation Publication 584, PennDOT Drainage Manual, Chapter 7, Appendix A, as amended, shall be used in determining stormwater runoff.
[Amended 4-10-2012 by Ord. No. 725][2]
[2]
Editor's Note: This ordinance also repealed former Figure I, Storm Intensity-Duration-Frequency Curves, and Table of Figure I.
(e) 
Storm frequency.
[1] 
A twenty-five-year storm frequency shall be used for the design of all stormwater systems.
[2] 
In all cases where storm drainage is picked up by means of a headwall or inlet structure and hydraulic inlet or outlet conditions control, the pipe shall be designed as a culvert for a fifty-year storm.
(f) 
Storm duration.
[1] 
A five-minute storm duration shall be used if this duration does not result in a maximum expected discharge that exceeds the capacity of a thirty-inch pipe.
[2] 
If a five-minute storm duration results in a pipe size exceeding 30 inches, the time-of-concentration approach shall be used in determining storm duration.
[3] 
If a five-minute storm duration results in a pipe size exceeding 30 inches, within any run of pipe, the time-of-concentration approach may be used for sizing of pipes from that point on by adjusting the time of concentration.
(3) 
Pipes.
(a) 
Pipes shall be sized by use of Manning's Equation with the pipes flowing full. The design shall be based on gravity (nonpressure) flow.
(b) 
The roughness coefficient (n) shall be in compliance with Appendix B, Table B-8, of Chapter 473, Stormwater Management.
[Amended 4-10-2012 by Ord. No. 725]
(c) 
The minimum diameter of all storm drainage pipe shall be 18 inches or an equivalent thereto. Where headroom is restricted, equivalent pipe arches may be used in lieu of circular pipe.
(d) 
Abrupt changes in direction or slope of storm drainage pipe shall be avoided. Where such abrupt changes are required, an inlet or manhole shall be placed at the point of change.
(e) 
The minimum grade of piping shall provide a minimum velocity of 2.5 feet per second and shall have a minimum slope of 0.5%.
(f) 
Storm sewers shall be placed within a street right-of-way, parallel to the cartway, and shall be designed as a combination storm sewer and underdrain. When located outside of a right-of-way, they shall be placed within an easement having a width of not less than 20 feet, if required by the Borough.
(g) 
The top of storm drainage pipes beneath cartways shall be at least six inches below subgrade elevation. Outside of cartways, all pipes shall have a minimum cover of two feet.
(4) 
Manholes.
(a) 
Manholes shall neither be more than 300 feet apart on sizes up to 24 inches nor more than 450 feet apart on greater sizes.
(b) 
Inlets may be substituted for manholes, on approval of the Borough Engineer, at the same spacing as required for manholes.
(c) 
Manhole covers and frames shall conform to Pennsylvania Department of Transportation specifications.
(5) 
Inlets.
(a) 
At street intersections, inlets shall be placed in the tangent portion rather than the curbed portion of the curbing.
(b) 
Where there is a change in pipe size in an inlet, the elevation for the top of the pipes shall be the same or the smaller pipes shall be higher. A minimum drop of two inches shall be provided in the inlet between the lowest inlet pipe invert elevation and the outlet pipe invert elevation.
(c) 
If the capacity of the shoulder, swale, curb section or depressed median section exceeds the assumed inlet capacity, the inlet capacities shall govern the spacing of inlets.
(d) 
If the capacity of the shoulder, swale, curb section or depressed median section is less than the inlet capacities, the shoulder, swale curb section or depressed section capacity shall govern the spacing of inlets.
(e) 
Type C inlets.
[1] 
Type C inlets shall be installed in uncountable curbs.
[2] 
In order to achieve greater efficiency, Type C inlets shall be spaced so as to permit 5% of the gutter flow to bypass the inlet.
[3] 
Inlet capacities shall be based on the Pennsylvania Department of Transportation Design Manual, Part 2, Publication 13M, Chapter 10, as amended.
[Amended 4-10-2012 by Ord. No. 725][3]
[3]
Editor's Note: This ordinance also repealed Subsection (F)(5)(e)(4), regarding Figure 2, Inlet Capacity and Gutter Flow Curves, and Figure 2, Inlet Capacity and Gutter Flow Curves.
(f) 
Type M and S inlets.
[1] 
Type S inlets shall be installed in shoulder swale areas with back slopes of six horizontal to one vertical and steeper.
[2] 
Type M Inlets shall be installed in swale areas where the back slope is flatter than six horizontal to one vertical.
[3] 
Inlet capacities shall be based on Table 2, Type M and S Inlet Capacities (in swale), as well as the Pennsylvania Department of Transportation Design Manual, Part 2, Publication 13M, Chapter 10, as amended.
[Amended 4-10-2012 by Ord. No. 725]
[4] 
All field inlets shall be put in swales.
Table 2
Type M or S Inlet Capacities
(in swale)
Grade
Back Slope
2:1
4:1
6:1
12:1
Dike
1.0
3.2
3.6
3.9
4.1
9.1
2.0
3.5
3.5
3.5
3.7
8.3
3.0
2.5
2.8
3.5
2.5
7.4
4.0
1.6
2.0
3.4
3.2
6.4
5.0
1.6
2.0
3.5
3.0
6.3
6.0
1.6
2.0
3.3
2.8
6.1
7.0
1.5
2.0
3.0
2.6
6.0
8.0
1.5
2.0
2.8
2.4
5.8
[5] 
Where a drainage dike is used, the side slope of the dike shall be eight horizontal to one vertical or flatter.[4]
[4]
Editor's Note: Original Subsection (F)(5)(f)(6), regarding the capacity of an inlet at a low point in a swale, which immediately followed this subsection, was repealed 4-10-2012 by Ord. No. 725.
(g) 
Inlets shall conform to Pennsylvania Department of Transportation specifications with the exception that the use of red brick for inlet construction is not permitted.
(h) 
Shoulders in cut areas (without swales).
[1] 
Water flowing in the shoulder shall not encroach more than 2/3 the shoulder width during a ten-year frequency storm of five-minute duration.[5]
[5]
Editor's Note: Original Subsection (F)(5)(h)(2), regarding the maximum velocity, as determined by Manning's Equation, which immediately followed this subsection, was repealed 4-10-2012 by Ord. No. 725.
[2] 
Inlets shall be provided to control the shoulder encroachment and water velocity.
Figure 2 Inlet Capacity and Gutter Flow Curves
(i) 
Swales adjacent to shoulders.
[Amended 4-10-2012 by Ord. No. 725]
[1] 
Swales in cut area shall be designed to prevent the passage of water onto the roadway during a ten-year frequency storm of five minute duration.
[2] 
The maximum velocity, as determined by Manning's Equation, shall not exceed the allowable velocity for the swale material as specified in the Pennsylvania Department of Transportation Publication 584, PennDOT Drainage Manual, Chapter 8, as amended.
(j) 
Curbed sections.
[Amended 4-10-2012 by Ord. No. 725]
[1] 
The maximum encroachment of water on the roadway shall not exceed two inches in depth at the curb during a ten-year frequency storm of five minute duration, and shall also not exceed half of a through lane.
[2] 
Inlets shall be provided to control the encroachment of water on the roadway.
A. 
The applicant shall enter into an agreement with the Newtown Artesian Water Company to construct water mains in such a manner as to make adequate water service available to each lot or building within the subdivision or land development. A minimum pressure of 20 pounds per square inch shall be provided at each house or other building to be connected to the water supply main. The water supply must comply with the regulations and standards of the Pennsylvania Department of Environmental Protection.
B. 
The system shall be designed with adequate capacity and appropriately spaced fire hydrants for firefighting purposes. Review and approval by the Newtown Fire Association and the Newtown Artesian Water Company shall be required in order to insure that adequate fire protection is provided.
A. 
The applicant shall enter into an agreement with the Newtown Joint Municipal Authority for the installation of the sanitary sewer facilities within the subdivision or land development.
B. 
All public sanitary sewers shall be designed and constructed in accordance with the standard specifications of the Newtown Joint Municipal Authority and in accordance with such other terms and conditions as may be set forth in the agreement mentioned in § 486-37A above.
C. 
No public sanitary sewer line or connection shall be constructed until plans and specifications have been submitted to the Pennsylvania Department of Environmental Resources, the Newtown Joint Municipal Authority, the Bucks County Department of Health, the Bucks County Planning Commission, and any other agency having jurisdiction.
D. 
No final plan shall be approved without certification that the sewage to be generated by the proposed subdivision or land development can be conveyed and treated by the Newtown Joint Municipal Authority.
A. 
All electric, telephone, and communication service facilities, both main and service lines, shall be provided by underground cables, installed in accordance with the prevailing standards and practices of the utility and other companies providing such services, except where it is demonstrated to the satisfaction of the Borough Council that the underground installation required is not feasible because of existing conditions.
B. 
Where possible, all utilities shall be located within the street right-of-way; otherwise, easements or rights-of-way of sufficient width for installation and maintenance shall be provided.
C. 
Final plans shall show locations of all utilities and shall be coordinated with required street tree planting.