A. 
Placement; marking. Monuments and markers must be placed that the scored or marked point coincides exactly with the point of intersection of the lines being monumented. They must be set so that the top of the monument or marker is level with the surface of the surrounding ground. Concrete monuments shall be marked on top with a copper or brass dowel. Cut-stone monuments shall have a point marking.
B. 
Specifications.
(1) 
Monuments shall be of concrete or stone and a minimum of six inches by six inches by 30 inches.
(2) 
Markers shall be set at all lot comers or at points of curvature.
C. 
Removal. Any monuments or markers that are removed shall be replaced by a surveyor at the expense of the person moving them.
[Amended 10-20-2025 by Ord. No. 301]
A. 
Residential streets shall be graded, surfaced, and improved in accordance with this section and as per Exhibit 2. Commercial and industrial streets shall be graded, surfaced and improved in accordance with this section and as per Exhibit 3.[1]
[1]
Editor's Note: Exhibits 2 and 3 are included at the end of this chapter.
B. 
The following standards shall apply to the road base:
(1) 
Road base shall be placed on well-compacted subbase.
(2) 
Geogrids (Tensar® BX1100 or equivalent) shall be placed on the well-compacted subbase.
(3) 
Road base shall consist of one of the following materials:
(a) 
Eight inches of compacted limestone consisting of a mix of sized stone ranging in size from AASHTO No. 1 to No. 57.
(b) 
Eight inches of compacted shale acceptable to the Township.
(c) 
Eight inches of other compacted stone acceptable to the Township.
(4) 
Leveling course. On top of the road base outlined above shall be placed two inches of crusher-run leveling course acceptable to the Township.
C. 
Shoulders. Shoulders shall consist of four inches of compacted shale or stone, four feet long, both sides of cartway. The outside three feet of compacted shale or stone shall then be covered with topsoil and seeded. The remaining one foot next to the cartway shall have stone placed to grade with the edge of the cartway.
D. 
Street paving.
(1) 
Residential streets shall be paved with 4 1/2 inches of ID-2A macadam consisting of three inches of BCBC and 1 1/2 inches of wearing course.
(2) 
Arterial commercial and/or industrial streets shall be paved with 6 1/2 inches of ID-2A macadam consisting of five inches BCBC and 1 1/2 inches of wearing course.
(3) 
The macadam shall meet the Pennsylvania Department of Transportation (PennDOT) specifications.
E. 
All utilities installed under the cartway of the streets shall be backfilled with crusher run or other stone material acceptable to the Township. Utilities shall be completely installed no less than 90 days before the paving of the street.
F. 
After all streets are completed, such completion shall be certified as satisfactory by the Township.
G. 
Inspection. The Township Inspector shall approve in steps; first, the subbase; then the road base, geogrid; then the leveling course; and finally, the paving. The developer may not proceed to the next step without first obtaining approval of the step just completed by the Township Inspector.
H. 
Whenever it appears to the Township that development may result in or has resulted in damage to a roadway, the developer shall be required to repair the roadway and repave it to Township specifications if necessary to repair the damage, and a bond for that work may be required as determined by the Township Engineer. When, during the course of development, construction, or maintenance, three or more cuts are made in 200 feet of roadway, the entire section of roadway must be paved or repaved. If two or more entities make a series of cuts, responsibility for repaving shall be joint and several, with the Township Engineer proposing an equitable allocation of responsibility for repaving that the parties may choose to accept or contest privately between themselves.
I. 
Utilities installed under existing streets shall be backfilled with crusher run or other stone materials acceptable to the Township and as per Exhibit 4.[2]
[2]
Editor's Note: Exhibit 4 is included at the end of this chapter.
A. 
Sewer systems.
(1) 
The minimum sewage facility that shall be provided for any dwelling, building, or commercial or industrial enterprise shall be of materials, designs, and functions in accordance with standards and regulations as determined by Act 537, commonly referred to as the Pennsylvania Sewage Facilities Act, as amended,[1] and its regulations, and/or the Washington Township Municipal Authority rules and regulations.
[1]
Editor's Note: See 35 P.S. § 750.1 et. seq.
(2) 
If an existing public sanitary sewer system is within 1,000 feet of a proposed subdivision, manufactured home park, or land development, the developer shall provide the subdivision, manufactured home park, or land development with a complete sanitary sewer system, which shall be connected to the public system and which shall serve every property within the proposed project. All plans and installations shall be subject to the approval of the Municipal Authority. Upon proper cause shown, the Supervisors, at an open meeting, may waive, modify, alter or suspend the requirements of this subsection.
[Amended 12-21-2020 by Ord. No. 280]
(3) 
Where a public sanitary sewer system is not accessible but is planned for extension to the subdivision, manufactured home park or land development or to within 1,000 feet of any part of same, or land development with a complete sanitary sewer system to be connected to the planned public sanitary sewer system, the developer's sewer system shall include a collector main installed in the street bed or approved sewer right-of-way and laterals installed from the collector main to the line of the street right-of-way or other approved sewer right-of-way. All plans and installations shall be subject to the approval of the Municipal Authority. Upon proper cause shown, the Supervisors, at an open meeting, may waive, modify, alter or suspend the requirements of this subsection.
[Amended 12-21-2020 by Ord. No. 280]
(4) 
Collector mains shall be designed as per the Washington Township Municipal Authority (WTMA) standards and requirements. All sewage collector mains shall be inspected by the WTMA at the cost of the developer.
(5) 
Following the construction of the collection system, the subdivider shall provide the Municipal Authority with as-built plans prepared by an engineer or surveyor and bearing his seal, showing the size, location and length of all lines. All descriptions shall include bearings and distances.
(6) 
Following completion of the collection system by the developer and inspection and approval by the Municipal Authority Engineer, the developer shall dedicate same to the Municipal Authority.
B. 
Water.
(1) 
Where a public water main supply is within 1,000 feet of, or where plans approved by the Board of Supervisors provide for the installation of such public water facilities to within 1,000 feet of a proposed subdivision or land development, the developer shall provide the subdivision or land development with a complete water main supply system, together with fire hydrants, to serve the subdivision or land development in accordance with specifications provided by the provider of water to the subdivision or land development, to be connected to the existing or proposed water main supply system. Under proper cause shown, the Supervisors, at an open meeting, may waive, modify, alter or suspend the requirements of this subsection. The public water system shall be used by the residents of the lot, and no type of private water system such as a well or cistern shall be interconnected to the public water system. No private water system such as a well or cistern shall be used for human consumption where public water is available.
(2) 
Following the construction of the water system, the subdivider shall provide the provider of public water with as-built plans, prepared by an engineer or surveyor and bearing his seal, showing the size, location, and length of all lines. All descriptions shall include bearings and distances.
(3) 
Following completion of the water system by the developer and inspection and approval by the provider of public water, the developer shall dedicate same to the provider of public water.
(4) 
Where installation of a public water main supply system is not required, the developer or owner of the lot shall provide for each lot at the time improvements are erected thereon, an individual water supply acceptable to the Department of Environmental Protection.
A. 
Each subdivision or land development shall conform to the provisions of Chapter 295, Stormwater Management, Article II, Antietam Creek Watershed, Appendix A, for stormwater management if located in the Antietam Watershed, or the provisions of Chapter 295, Article I, General Requirements, if located outside of the Antietam Watershed.
[Amended 12-29-2004 by Ord. No. 182]
B. 
Lots shall be laid out and graded to provide positive drainage away from new and existing buildings.
C. 
Whenever the evidence available indicates that natural surface drainage is inadequate, the subdivider or developer shall install storm sewers, culverts, retention basins and/or related facilities in accordance with plans and profiles designed by a registered engineer, approved by the Municipal Engineer, reviewed by the Planning Committee and approved by the Board of Supervisors. The developer shall submit his engineer's calculations upon which the size of conduits, culverts, and other portions of the proposed storm sewer system have been based. Such storm drainage systems shall further provide the adequate drainage of streets and the interception of stormwater runoff along streets at intervals reasonably related to the extent and grade of the area drained, and provide off-site improvements if needed.
[Amended 12-16-2019 by Ord. No. 271]
D. 
For any structure in, along or across any stream having a drainage area of 1/2 mile square or more, which may be subject to the rules and regulations promulgated under the Clean Streams Law, the subdivider or developer shall submit to the Township a copy of the approved permit for a structure issued under the Clean Streams Law.
Wherever the lots in a proposed subdivision or land development will result in a density of five or more families per net residential acre, or where multifamily dwellings are provided, curbs shall be installed within the proposed development along the required parking areas. The Board of Supervisors may require installation of curbs and/or gutters in any subdivision where the evidence indicates that such improvements are necessary for proper drainage. All completed curbs and gutters shall be certified as satisfactory by the Municipal Engineer.
Wherever the lots in a proposed subdivision or land development will result in a density of five or more families per net residential acre, or where multifamily dwellings are provided, sidewalks shall be installed from the required parking area to the residential units and to the required playground(s), when applicable. The Board of Supervisors may require installation of sidewalks in any subdivision or land development where the evidence indicates that sidewalks are necessary for the public safety. All completed sidewalks shall be certified as satisfactory by the Municipal Engineer.
A. 
Streets dedicated to Township. Streets constructed since the first subdivision ordinance in 1976 were dedicated to the Township with deeds for what is normally a fifty-foot wide piece of ground the length of the street, with paving more or less centered on it. Inasmuch as the Township is deeded ownership to this fifty-foot wide strip of ground, certain restrictions apply to any encroachment by any lot owner on this property. Any shrub, bush, tree, structure, mailbox, post, log, vehicle or other object placed on this property by a lot owner is done so at the lot owner's risk. Washington Township refuses any responsibility to replace, remove or repair any such objects damaged by the Township. Further, any such object that hinders sight vision from driveways or intersections must be removed by the owner within 14 days of receiving written notice by the Township. If the object is not removed after the prescribed time by the owner, the Township will remove the object and dispose of it in accordance with laws. The Township would be under no requirement to return the object to its previous owner after the expiration of the prescribed time.
B. 
Streets on which the Township has a right-of-way. Inasmuch as the lot owner continues to own the property over which the right-of-way exists, a lot owner may place objects such as mailboxes, shrubs, posts, and similar items on his property over which the Township has a right-of-way as long as those objects do not interfere with normal safety of the traveling public, normal maintenance of the roadway, or sight vision from any intersection or driveway. Any property owner notified regarding required removal of an object from the right-of-way must do so within 14 days of receiving written notice. Failure to remove the object will result in the Township removing the object and replacing it on the lot owner's property off the right-of-way. Any object on a right-of-way damaged by Township equipment hitting the object will not be replaced by the Township. If the object is hit by snow or stones in normal course of work by the Township, the Township is not responsible for replacing it.
C. 
State roads. Any objects on state road rights-of-way damaged by Township equipment will be handled on a case-by-case basis.
[Added 4-21-2004 by Ord. No. 175]
An applicant or developer of a subdivision or land development plan shall plan for, provide and dedicate to Washington Township a suitable and adequate park or recreation area to serve the needs of future residents or occupants of the subdivision or land development or, in the alternative, upon agreement with Washington Township, pay a fee in lieu of dedicating park or recreational areas, guarantee the private reservation of land and maintenance of park or recreation areas, construct recreational facilities, or provide for any combination of the foregoing, all in accordance with the provisions of this section.
A. 
Criteria for proposed park or recreation areas.
(1) 
General criteria. The proposed park or recreation areas, whether offered for dedication to Washington Township or proposed to become part of a private reservation of land, shall comply with and be subject to the following criteria:
(a) 
Proposed park or recreation areas shall:
[1] 
Be easily and safely accessible, have good ingress and egress and have direct access to a public roadway, a minimum of 50 feet wide.
[2] 
Be contiguous and regular in shape.
[3] 
Be suitable for park and recreational purposes by reasons of size, shape, location, topography and soil conditions for use and development as a park or recreation area.
[4] 
A minimum of 75% of the required area shall have a maximum slope of 7%.
[5] 
No more than 25% of the required area may be within floodplain or wetland areas, unless agreed to by the Township.
[6] 
Be served by all essential utilities, such as water, sewer and electric.
[7] 
Be compatible with the objectives, guidelines, and recommendations as set forth in the latest Washington Township Comprehensive Park, Recreation, and Open Space Plan.
(2) 
Specific criteria applicable to the private reservation of land. Proposed park or recreation areas proposed by the applicant or developer as part of the private reservation of land shall be subject to the following requirements:
(a) 
Final subdivision and/or development plans shall indicate the location and specifications of all park and recreation areas to be constructed and set forth metes, bounds and acreage(s) of the park and recreation area(s).
(b) 
Park and recreation areas shall be bonded and have improvement guarantees posted or deposited with the Township as with any other subdivision or land development improvements.
(c) 
A property owners association, or other entity acceptable to the Township, shall be established to own and maintain any private reservations of land.
(3) 
Mandatory dedication.
(a) 
Any proposal that would result in the creation of one or more new dwelling units shall be required to dedicate a minimum of 0.06 acre of park and/or open space per dwelling unit to the Township, prior to final plan approval.
(b) 
As an alternative to dedication, and upon agreement with the Board of Supervisors, the applicant may agree to provide the following:
[1] 
Pay a fee in lieu of dedication.
[2] 
Guarantee the private reservation and maintenance of parkland or open space. The parkland or open space to be reserved shall be 0.06 acre of open space and/or parkland.
(4) 
Dedication of land to Washington Township.
(a) 
All or part of park or recreation areas may be offered for dedication to Washington Township, but the Township shall not be obligated to accept same.
(b) 
The Board of Supervisors or the Planning Committee may determine dedication or private reservation to be impractical because of the size, shape, location, access, topography, drainage or other physical features of the land, or that such dedication or private reservation would adversely affect the subdivision or land development and its future residents or occupants, or that there is no other land area within the proposed subdivision or land development which is practical for dedication to the public or for a private reservation of land for park purposes because of size, access, topography, or other physical characteristics. In such event, the applicant or developer, upon agreement with the Township, shall pay a fee in lieu of dedication, in accordance with the requirements of this section.
[Amended 12-16-2019 by Ord. No. 271]
(c) 
When the Board of Supervisors deems it to be in the public interest to accept title to dedicated land, such acceptance shall be by means of a signed resolution to which the property description, lot plan with metes, bounds and acreage, and a fee simple title deed with general warranty free of any liens, encumbrances or easements on and to the dedicated recreation area, shall be attached.
(5) 
Private reservation of land for park or recreation purposes.
(a) 
All park and recreation areas proposed to be a private reservation of land as park and recreation area for use of the residents or occupants of the land subject of the subdivision or land development, shall upon agreement with the developer or applicant and the Board of Supervisors, be irrevocably conveyed to a duly incorporated property owner's association, or other entity acceptable to the Township, which shall be responsible to properly maintain perpetually all of such park and recreation areas, pay all taxes assessed to the land as well as any improvements thereon and supervise all activities conducted thereon. The Township shall have no obligation whatsoever in connection with such park or recreation areas other than the normal municipal services provided to the public in general.
(b) 
The deed of conveyance of such park and recreation areas shall contain a restrictive covenant limiting such land and improvements to the common use of the property owners within the development for the purposes initially approved by the Township. Said deeds shall also contain a restriction that said lands and improvements may not be sold or disposed of by the association, except to another organization formed to own and maintain said recreation areas, without first offering to dedicate the land and improvements to the Township.
(6) 
Fee in lieu of dedication.
(a) 
In lieu of dedicating park or recreation land to the Township, the applicant or developer may pay to the Township the after-developed fair market value of the land which would have been otherwise required for dedication. The after-developed fair market value shall be determined on the basis that the land has access to a public roadway and the availability of all utilities and shall not reflect a value of the land in a raw condition or state.
(b) 
This fair market value shall be submitted as part of the preliminary plan submission by the applicant or developer at the applicant's or developer's expense and shall be determined by a member of the Appraisal Institute of the American Institute of Real Estate Appraisers (MAI) and shall include any documentation used to derive the land's after-developed fair market value.
(c) 
The Board of Supervisors shall have the right to reject any appraisal and select another appraiser at the expense of the applicant or developer, which will establish the fee to be paid based upon the after-developed fair market value of the land.
(d) 
The Board of Supervisors may, from time to time, establish, by resolution, a fixed per dwelling unit fee, which fee shall be in place of the above described fair market value fee and shall remain in effect until a succeeding resolution establishing other fees is adopted.
(7) 
All fees paid hereunder shall be due and payable in full upon approval of the final subdivision or land development plan or phase or section thereof and shall be paid prior to the release of any plan for recording.
(8) 
All monies paid to the Township pursuant to this section shall be deposited and utilized in accordance with the provisions and requirements of the Pennsylvania Municipalities Planning Code.[1]
[1]
Editor's Note: See 53 P.S. § 10101 et seq.
A. 
All utilities including electric, telephone, TV cable and natural gas installed under any street cartway shall either be placed in the street subbase prior to the street being compacted as per § 310-38B or the developer/utility shall place conduit in the street subbase for the future installation of the utilities.
B. 
No utilities shall be installed under the cartway after a new street has been accepted by the Township for a minimum of five years unless specifically approved by the Board of Supervisors after receiving a written request. Bonding shall be provided to provide for the complete restoration of the cartway in the event that the cartway boring should fail.
A. 
Street name signs. The subdivision or land development shall be provided with street name signs at all intersections. Such signs shall conform to Township specifications and shall be installed by the Township at the developer's expense.
B. 
Other street signs. Street signs, such as stop signs, warning signs, speed signs or any other signs required by the development shall conform to Pennsylvania Department of Transportation regulations. These signs shall be installed at the developer's expense prior to dedication of the street to the Township.
Construction of all facilities and utilities shall be subject to inspection by appropriate Township officials during the progress of the work. The developer shall give 48 hours' notice to the Township prior to the installation or performance of any work requiring Township inspection and will be billed at the current rate.
In cases where any of the foregoing requirements are not deemed appropriate by the Board of Supervisors to serve in the public interest, the Board of Supervisors reserve the right to increase, change, alter, or substitute materials, manner and specification for any utility or street improvement.
No plat shall be finally approved unless the streets shown have been improved to a mud-free or otherwise permanently passable condition or improved as may be required by this chapter, and any walkways, curbs, gutters, streetlights, fire hydrants, recreational facilities, shade trees, water mains, sanitary sewers, storm drains, and other improvements as may be required by this chapter have been installed in accordance with this chapter. In lieu of the completion of any improvements required as a condition for the final approval of a plat, a deposit with the municipality of financial security may be required in an amount sufficient to cover the costs of any improvements or common amenities, including but not limited to roads, stormwater detention and/or retention basins and other related drainage facilities, recreational facilities, open space improvements, or buffer or screen plantings. Without limitation as to other types of financial security which the municipality may approve, which approval shall not be reasonably withheld, federal or commonwealth lending institution irrevocable letters of credit and restrictive or escrow accounts in such lending institutions shall be deemed acceptable financial security for the purpose of this section. Such financial security shall be posted with a bonding company or federal or commonwealth chartered lending institution chosen by the party posting the financial security, provided said bonding company or lending institution is authorized to conduct such business within the commonwealth. Such bond or other security shall provide for and secure to the public, the completion of any improvements which may be required within one year of the date fixed in the subdivision plat for completion of such improvements. The amount of financial security shall be equal to 110% of the cost of the required improvements, estimated as of 90 days following the date scheduled for completion by the developer for which financial security is to be posted. The cost of the improvements shall be established by submission to the Township Supervisors of bona fide bid or bids from the contractor or contractors chosen by the party posting the financial security to complete the improvements; or, in the absence of such bona fide bids, the costs shall be established by estimate prepared by the municipality's engineer. If the party posting the financial security 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 procedures. In the case where development is projected over a period of years, the Township Supervisors may authorize submission of final plats by section or stages of development subject to such requirements or guarantees as to improvements of future sections or 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 party posting the financial security may request the Township Supervisors to release or authorize the release of, from time to time, such portions of the financial security necessary for payment to the contractor or contractors performing the work. Any such requests shall be in writing addressed to the Township Supervisors, and the Township Supervisors shall have 45 days from receipt of such request within which to allow the Municipal Engineer to certify, in writing, to the Township Supervisors that such portion of the work upon the improvements has been completed in accordance with the approved plat. Upon such certification, the Township Supervisors shall authorize release by the bonding company or lending institution of an amount as estimated by the Municipal Engineer fairly representing the value of the improvements completed; or, if the Township Supervisors fall to act within said forty-five-day period, the Township Supervisors shall be deemed to have approved the release of funds as requested. The Township Supervisors may, prior to final release at the time of completion and certification by its engineer, require retention of 10% of the estimated cost of the aforesaid improvements. Where the governing body accepts dedication of all or some of the required improvements following completion, the governing body may require the posting of financial security to secure structural integrity of said improvements as well as the functioning of said improvements in accordance with the design and specifications as depicted on the final plat for a term not to exceed 18 months from the date of acceptance of dedication. Said financial security shall be of the same type as otherwise required in this section with regard to installation of such improvements; and the amount of the financial security shall not exceed 15% of the actual cost of installation of said improvements. If water mains or sanitary sewer lines, or both, along with apparatus of facilities related thereto are to be installed under the jurisdiction and pursuant to the rules and regulations of a public utility or municipal authority separate and distinct from the municipality, financial security to assure proper completion and maintenance thereof shall be posed in accordance with the regulations of the controlling public utility or municipal authority and shall not be included within the financial security as otherwise required by this section. If financial security has been provided in lieu of the completion of improvements required as a condition for the final approval of a plat as set forth in this section, the municipality shall not condition the issuance of building, grading or other permits relating to the erection or placement of improvements, including buildings, upon the lots or land as depicted upon the final plat upon actual completion of the improvements depicted upon the approved final plat. Moreover, if said financial security has been provided, 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 mud-free or otherwise permanently passable condition, as well as the completion of all other improvements as depicted upon the approved plat, either upon the lot or lots or beyond the lots in question if such improvements are necessary for the reasonable use of or occupancy of the building or buildings.
Two sets of as-built drawings shall be submitted to the Township upon completion of the streets, stormwater facilities, or other improvements associated with the approved final plat.
A. 
When the developer has completed all of the necessary and appropriate improvements, the developer shall submit two sets of as-built drawings and shall notify the Board of Supervisors in writing, by certified or registered mail, of the completion of the aforesaid improvements and shall send a copy thereof to the Municipal Engineer. The Board of Supervisors shall, within 10 days after receipt of such notice, direct and authorize the Municipal Engineer to inspect all of the aforesaid improvements. The Municipal Engineer shall thereupon file a written report with the Board of Supervisors and shall promptly mail a copy of the same to the developer by certified or registered mail. The report shall be made and mailed within 30 days after receipt by the Municipal Engineer of the aforesaid authorization from the Board of Supervisors; said report shall be detailed and shall indicate approval or rejection of said improvements, either in whole or in part; and if said improvements, or any portion thereof, shall not be approved or shall be rejected by the Municipal Engineer, said report shall contain a statement of reasons for such nonapproval or rejection.
B. 
The Board of Supervisors shall notify the developer in writing; by certified or registered mail, of the action of said Board of Supervisors with relation thereto.
C. 
If the Board of Supervisors or the Municipal Engineer fail to comply with the time limitation provisions contained herein, all improvements will be deemed to have been approved, and the developer shall be released from all liability pursuant to its performance guaranty bond.
D. 
If any portion of the said improvements shall not be approved or shall be rejected by the Board of Supervisors, the developer shall proceed to complete the same; and upon completion, the same procedure of notification, as outlined herein, shall be followed.
E. 
Nothing herein, however, shall be construed in limitation of the developer's right to contest or question, by legal proceeding or otherwise, and determination of the Board of Supervisors or the Municipal Engineer.
F. 
Where herein reference is made to the Municipal Engineer, he shall be as a consultant thereto.
G. 
The municipality may prescribe that the applicant shall reimburse the municipality for the reasonable and necessary expense incurred for the inspection of improvements.
In the event that any improvements which are required have not been installed as provided in this chapter or in accord with the approved final plat, the Board of Supervisors may 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 the installing or making repairs or corrections to all the improvements covered by said security, the Board of Supervisors 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 municipal purpose.