[Ord. 1988-2, 3/7/1988, § 11.6(a); as amended by Ord. 91-2, 11/4/1991]
The applicant shall provide all improvements required by these regulations. The specifications for the improvements contained herein, or in the Township Engineer's Specifications, shall apply.
[Ord. 1988-2, 3/7/1988, § 11.6(b)]
1. 
Monuments must be set:
A. 
At the intersections of all street right-of-way lines.
B. 
At the intersections of lines forming angles in the boundaries of the subdivision.
C. 
At the intermediate points as may be required by the Engineer.
D. 
Perimeter monuments must be set prior to preliminary plan approval. Prior to approval of the final plat, all monuments and markers, except as provided in § 22-505 relating to monuments in locations to be affected by street construction and final grading operations, must be set.
2. 
Markers must be set:
A. 
At all corners except those monumented.
B. 
By the time the property is offered for sale.
3. 
Monuments and markers shall be made of the following size and material:
A. 
Monuments shall be six inches square or four inches in diameter and shall be 30 inches long. Monuments shall be made of concrete, stone, or by setting a four-inch cast iron or steel pipe filled with concrete.
B. 
Markers shall be 5/8 of an inch square or 5/8 of an inch in diameter, 25 inches long. Markers shall be made of iron pipes or iron or steel bars.
4. 
Monuments and markers must be placed so that the scored or marked point coincides exactly with the point of intersection of lines being monumented. They must be set so that the top of the monument or marker is level with the finished grade of the surrounding ground. Monuments must be marked on top with a copper or brass plate or dowel set in the concrete.
5. 
In locations to be affected by street construction and final grading operations, the permanent monuments must be established prior to final acceptance by the Township of the proposed roadway within the subdivision. However, before approval of the final plat and to further guarantee the placement of permanent monuments in the above stated areas, the developer shall comply with the financial security provisions of this chapter.
[Ord. 1988-2, 3/7/1988, § 11.6(c); as amended by Ord. 91-2, 11/4/1991; and by Ord. 2002-2, 6/3/2002, § 1]
1. 
Pavements and Construction. Streets must be surfaced to the grades and dimensions drawn on the plans, profiles, and cross-sections submitted by the applicant and approved by the Board of Supervisors. Before paving the street surface, the applicant must install the required utilities and provide, where necessary, adequate stormwater drainage for the street acceptable to the Board of Supervisors. The pavement base and wearing surface must be constructed in accordance with the current Pennsylvania Department of Transportation specifications.
A. 
Minor Streets. The base course shall consist of 10 inches of compacted aggregate constructed in accordance with the specifications set forth in Section 350, Subbase, in the Pennsylvania Department of Transportation, Form 408, "Specifications," as amended. Construction of the surface course shall be five inches of ID-2 binder (placed in two equal lifts) and 1 1/2 inches of ID-2 wearing course, in accordance with the requirements of the Pennsylvania Department of Transportation Publication, Form 408, "Specifications," as amended.
B. 
Collector Streets. The base course shall consist of 10 inches of compacted aggregate constructed according to the specifications set forth in Section 350, Subbase, in the Pennsylvania Department of Transportation, Form 408, "Specifications," as amended. Construction of the surface course shall be the same as specified above for minor streets.
C. 
Arterial Streets. For the construction of arterial roads or highways, the applicant shall consult the Commission and be governed by the Pennsylvania Department of Transportation for the method of construction to be used. The Board of Supervisors, on recommendation of the Commission, shall decide if a collector or arterial street is required as a direct result of the construction of the subdivision or land development.
D. 
Shoulders. The base course, binder course and wearing course shall meet the same requirements as minor street surfacing.
E. 
Driveway Entrances. Driveway entrances or aprons within the street right-of-way shall be paved to their full width, and, in no case, shall be less than 10 feet wide nor greater than 20 feet wide for residential developments and, in no case, shall be less than 20 feet wide, nor greater than 40 feet wide for commercial or industrial developments. The type of paving to be the same for shoulders. Where sidewalks are installed, the required driveway surfacing shall end at the street side of the sidewalk.
(1) 
Driveway entrances along streets, where curbs are not required, shall be constructed to provide proper drainage along the streets and from the streets by the continuation of gutters, swales, or ditches. Such continuation may be provided by having an approved pipe of not less than 18 inches in diameter across such driveway entrance.
(2) 
Driveway entrances along streets, where curbs are not required, shall be constructed so that the driveway meets the edge of the cartway as a continuation of the slope from the crown of the street for not less than five feet.
(3) 
Where proposed driveways provide access onto a state highway (Legislative Route, Pennsylvania Route or United States Route), the design of such driveway access and drainage shall be prepared in accordance with the requirements of the Pennsylvania Department of Transportation and shall be subject to the approval and issuance of permits by the Department.
(4) 
Where a driveway or access road gives access to a municipal street, approval by the Board of Supervisors shall be required, and a Highway Occupancy Permit shall be obtained.
(5) 
The curb height at driveway entrances may be reduced to a minimum of one inch for driveway entrances along streets where curbs are required. The maximum width of reduced curb height shall be 20 feet for residential driveways and 40 feet for commercial or industrial driveways. Sidewalks across driveway entrances, where required, shall be constructed in accordance with the requirements in this chapter.
(6) 
Where a lot has frontage on a minor street and a collector or arterial street, the driveway entrance shall be from the minor street and not from the collector or arterial street. The driveway entrance shall be not less than 55 feet from the curbline or cartway paving of the collector or arterial street.
F. 
Handicapped Accessibility. When deemed necessary by the Board of Supervisors, on recommendation of the Planning Commission, intersection curb cuts shall be provided where sidewalks and curbs are required.
[Ord. 1988-2, 3/7/1988, § 11.6(d); amended by Ord. 2011-2, 9/6/2011; and by Ord. 2016-1, 4/4/2016]
1. 
Public Sewers.
A. 
Where a public sanitary sewer system is available, or if such system is not available but will, in the option of the Board of Supervisors, become available within a reasonable time, the developer must install a complete sanitary sewer system including a collector main installed in the street bed or approved right-of-way; lateral installations to the rights-of-way lines of streets, lot or parcel property lines or sewer easement rights-of-way lines, whichever pertains to the individual situation. All termini shall be capped in a manner that will insure that all collector mains, laterals, and house connections shall be watertight pending connections with the public sanitary sewer system. The system shall be designed by a registered engineer and approved by the Township Engineer. The Township Engineer shall inspect construction of all sanitary sewers to assure that said sewers will coordinate and have congruity with the Township's overall comprehensive sewer plan. All sewage pumping stations, interceptors and treatment plants to be installed by the developer at the developer's expense shall be reviewed and approved by the Township Engineer, who shall inspect the construction thereof.
B. 
When trunk sewers are not available but will become available within a reasonable time, the collection system and the required laterals extending from the main to the curb shall be installed and capped by the developer. The developer may also install on-site sewage disposal facilities provided that the system is designed to provide connection to the public sewer when it becomes operable.
2. 
Except as provided in § 22-504, Subsection 3, design, approval of design, supervision and inspection fees for services rendered on behalf of the developer by the Township Engineer shall be paid by the developer in accordance with the fee schedule attached hereto and made a part of this chapter by reference thereto, which schedule shall be available for review by any developer, at the Township Office. Said fee schedule shall be amended from time to time by resolution of the Board of Supervisors of Londonderry Township.
3. 
In the case of sewer facilities to be owned or operated by the Derry Township Municipal Authority, such facilities must meet all of the requirements of the Derry Township Municipal Authority, including, without limitation, its rates, rules and regulations and its Standard Construction and Material Specifications for the Design and Construction of Sanitary Sewer Collection and Conveyance System Facilities, and any other applicable requirements.
4. 
Sanitary sewers and sewage disposal systems shall not be combined with stormwater sewers and shall not be constructed to receive effluent from any stormwater collection system.
5. 
All fees for permits shall be at the developer's expense.
6. 
The developer shall provide an adequate and potable water supply and distribution system to service the proposed subdivision or land development through one of the following methods, listed in their order of preference:
A. 
Connection to a public water supply system where such a system can feasibly be provided to the proposed development tract and where the capacity of such a system can adequately fulfill the water supply demands of the proposed development. A distribution system shall be designed to furnish an adequate supply of water to each lot. A copy of the approval of such a system by the appropriate public authority or utility company shall be submitted with the final plan.
B. 
Where a public water supply system cannot feasibly be provided to the proposed development, as evidenced by an evaluation study, the feasibility of constructing a separate water supply system shall be investigated and a report submitted setting forth the findings. If such a system is provided, it shall be reviewed and approved by the Pennsylvania Department of Environmental Protection, and suitable agreements, including financial guarantees, shall be established for the ownership and maintenance of the system. Also, such a system shall be designed and constructed in a manner that would permit adequate connection to a public water supply system in the future.
C. 
Where neither of the above alternatives is possible or feasible, either an individual on-lot or community water system may be permitted pursuant to compliance with § 22-504, Subsection 9, below. Such individual community system shall also meet the criteria of the Pennsylvania Department of Environmental Protection.
D. 
All water systems located in flood-prone areas, whether public or private, shall be floodproofed to a point 1 1/2 feet above the one-hundred-year flood elevation.
7. 
Individual On-lot Wells or Community Water Systems.
A. 
In subdivisions or land developments proposing to utilize individual on-lot wells or a community water supply, the Board of Supervisors reserves the right to require the applicant to drill and test a well(s) and have a report prepared on the quantity and quality of groundwater at the site in accordance with § 22-305, Subsection 1F, of this chapter.
B. 
Such requirement for a test well(s) and report might be invoked at the discretion of the Board of Supervisors in situations where: (1) the area is known to have actual water yield or quality problems; or (2) the Pennsylvania State Water Plan or United States Geological Survey Water Resource Reports or other technical study indicates a potential low-yield area or inadequate water quality area; or (3) the development consists of 25 proposed lots or units with an average density of less than one unit per acre or involves a withdrawal of 10,000 or more gallons per day. The requirement may also be invoked when the 26th or subsequent lots or units are proposed to be developed from the original or parent tract.
C. 
The contents of the report or study of the proposed community water supply shall include those specific items as described in the Public Water Supply Manual of the Pennsylvania Department of Environmental Protection (DEP). Where the water supply system occurs under the jurisdiction of the Pennsylvania Public Utilities Commission (PUC), the water supply study shall also incorporate those items of information required by the PUC.
D. 
When individual on-lot wells are proposed, the subdivider shall either install such facilities or put a restriction in the deed of each lot indicating that no building intended for residential, commercial, or industrial use shall take place on said lot until such time that a satisfactory well is provided or, as a condition of the sale of each lot or parcel within the same subdivision or land development, that the facilities can be installed by the purchaser of such lot and have minimum yield of potable water of 500 GPD prior to sale. The owner or subdivider shall provide the Board of Supervisors with proof of compliance with this section. Construction of wells for individual small water supplies shall conform to DEP's Construction Standards for Individual Water Supplies, as revised 7/83 or later. Individual on-site wells shall be subject to the following standards:
(1) 
Location:
(a) 
The source of supply shall be from a water-bearing formation not less than 25 feet from the ground surface.
(b) 
Cap wells shall be located at a point free from flooding and at a higher elevation and at the following minimum distances to existing or potential sources of pollution:
Minimum Isolation Distances From the Proposed Well to the Facilities Listed Below
Source of Pollution
Minimum Distance
(feet)
Lakes, ponds, streams or other surface waters
25
Storm drains, retention basins, stormwater stabilization ponds
25
Preparation area or storage area of hazardous spray materials, fertilizers or chemicals; salt piles
300
Gravity sewer lines and drains carrying domestic sewage or industrial waste [except when the sewer line is cast-iron pipe with either watertight lead-caulked joints or joints filled with neoprene gaskets, or if solvent-welded Schedule 40 (or SDR equivalent) or better polyvinylchloride (PVC) pipe]
50
10
Sewage drains carrying domestic sewage or industrial waste under pressure (except welded steel pipe or concrete-encased pipe)
50
10
Septic tanks or aerobic tanks
50
Subsurface sewage disposal systems, elevated sand mounds, etc.
100
Sewage seepage pits, cesspools
100
Farm silos, barnyards
100
Rainwater pits
25
Spray irrigation site; sewage sludge and septage disposal sites
300
Property lines or rights-of-way
5
Dedicated road right-of-way
15
Building foundations (except for building enclosing just water wells and/or water well pumps)
10
Any other source of pollution
As approved
8. 
Sources of Groundwater for Community Water Systems. It is recommended that two sources of groundwater be provided for each public or community water system. Each should be capable of supplying the average daily demand of the proposed dwelling units. Although a two-well system is ideal, there are alternatives which would ensure an adequate water supply:
A. 
A single well capable of providing twice the ultimate daily average demand as demonstrated by a pumping test of at least 48 hours' duration producing a stabilized drawdown of unchanging water level for at least five hours' duration.
B. 
A single well capable of supplying the average daily demand with an additional reliable surface water source.
C. 
A single well capable of supplying the average daily demand plus a dependable connection to another satisfactory public water supply system.
D. 
A second well is recommended for use as a monitor of the aquifer and as a standby in the event of emergency.
9. 
Fire Hydrants. Wherever a public or community water system is provided, fire hydrants suitable for the coupling of equipment serving the Township shall be installed as specified by the Insurance Services Office of Pennsylvania and the local fire companies. Location of hydrants shall be approved by the Township.
A. 
Generally, all fire hydrants will be located on an eight-inch line or a looped six-inch line. Where a dead-end line is required to contain a fire hydrant, the portion of the line between the main loop and the hydrant shall be an eight-inch minimum diameter.
B. 
Fire hydrants shall be spaced in a development so that all proposed buildings will be no more than 600 feet from the hydrant, measured along traveled ways.
C. 
All community water systems must provide a minimum of 500 GPM at a residual pressure of 20 psi for a two-hour period.
D. 
For additional fire protection, a standpipe may be required to be incorporated into existing and proposed ponds or reservoirs and an access easement provided for emergency use.
E. 
Hydrants shall be located in a manner to provide complete accessibility and so that the possibility of damage from vehicles or injury to pedestrians will be minimized. When placed behind the curb, the hydrant barrel shall be set so that no portion of the pumper or hose nozzle cap will be less than 24 inches from the gutter face of the curb. When set in the lawn space between the curb and the sidewalk or between the curb and the property line, no portion of the hydrant or nozzle cap shall be within six inches of the sidewalk.
[Ord. 1988-2, 3/7/1988, § 11.6(e)]
Whenever the evidence available to the Board of Supervisors, or recommendation by the Planning Commission, indicates that the existing natural surface drainage is inadequate, the applicant shall provide an adequate surface water management system in accordance with the standards set forth in Part 4 of this chapter.
[Ord. 1988-2, 3/7/1988, § 11.6(f); as amended by Ord. 91-2, 11/4/1991]
The Board of Supervisors shall require the installation of curbs and gutters in every subdivision or land development in the Township.
A. 
Curbs and gutters shall be constructed according to specifications set forth in the current edition of "Pennsylvania Department of Highways Specifications," Form 408, of the Pennsylvania Department of Transportation, as amended.
B. 
Where vertical curbs are provided, they shall, not be less than six inches wide at the top and eight inches wide at the bottom. The overall depth of the curb shall be not less than 18 inches. The curb shall rest on a six-inch crushed stone base, or concrete footings at the joints if, in the opinion of the Township Engineer, conditions warrant.
C. 
The cross-sections of curbs and gutters shall be constructed in accordance with the details shown on approved drawings.
D. 
Curbs and gutters shall be set and finished to the lines and grades given on the approved drawings.
[Ord. 1988-2, 3/7/1988, § 11.6(j); as amended by Ord. 91-2, 11/4/1991]
The Board of Supervisors shall require the installation of sidewalks in all subdivisions or land developments.
A. 
Sidewalks shall be within the right-of-way of the street and shall extend in width from the right-of-way line toward the curbline.
B. 
Sidewalks must be at least four feet wide. In the vicinity of shopping centers, schools, recreation areas, and other such facilities, sidewalks must be at least five feet wide and located within the street right-of-way.
C. 
Sidewalks shall be constructed according to the current specifications as set forth in "Cement Concrete Sidewalks in the Pennsylvania Department of Highway Specifications," Form 408, as amended, of the Pennsylvania Department of Transportation.
D. 
In order to provide for the drainage of surface water, sidewalks shall slope from the right-of-way line toward the curb. Such slope shall be 3/8 inch per foot.
[Ord. 1988-2, 3/7/1988, § 11.6(h)]
Reasonable efforts should be made by the applicant to preserve existing shade trees and, in addition, deciduous hardwood trees with a minimum caliber of 1-1/2 inches should be provided in accordance with conditions recommended by the Planning Commission and agreed upon by the Board of Supervisors, and, if applicable, any municipal authority and/or appropriate public utility. Where provided, such trees should be planted between the sidewalk and the building setback line at least five feet from the sidewalk or between the curb and sidewalk; provided, the planting strip is a minimum of six feet wide.
[Ord. 1988-2, 3/7/1988, § 11.6(i); as amended by Ord. 91-2, 11/4/1991]
Street name signs and regulatory signs shall be installed at all street intersections at the owner's or developer's expense. The design and placement of such signs shall be subject to approval by the Board of Supervisors.