[Amended 7-27-2016 by Ord. No. 16-16]
When an area of land for public use (in addition to streets, alleys, pedestrianways, and utility easements) is recommended by the Planning Commission and required by the Village Board to be located in whole or in part in a subdivision, the subdivider shall designate on the preliminary plat and final plat that such land is reserved for public use. If such land is not acquired or arrangements made for acquisition by the Village, a school board, or other governmental body within one year after the date of recordation of the final plat, such land may thereafter be used by the subdivider for a use permitted at its location by zoning regulations or, if possible, in accordance with more restrictive protective covenant requirements.
If any plat of subdivision contains public streets or thoroughfares which are herein dedicated as such, whether located within the corporate limits of the Village or in part outside thereof, or contains streets located outside of said corporate limits, the approval of the plat by the Village Board or the subsequent annexation of the property to the Village shall not constitute an acceptance thereon or therein, for maintenance purposes, irrespective of any act or acts by an officer, agent, or employee of the Village with respect to such streets or improvements. The acceptance of such streets or thoroughfares for maintenance shall be made only by the adoption of a resolution by the Village Board after there has been filed with the Village Clerk a certificate by the Village Engineer certifying that all improvements required to be constructed or installed in or upon such streets or thoroughfares, in connection with the approval of the final plat of subdivision by the Village Board, have been fully completed and the construction or installation thereof has been approved by him or her.
[Amended 4-12-2004 by Ord. No. 04-07; 2-13-2006 by Ord. No. 06-04; 8-14-2006 by Ord. No. 06-21]
Before a final plat of subdivision is approved by the Village Board, the owner or subdivider shall submit to the Village Engineer completed plans and specifications, prepared by a registered engineer, covering the improvements and utilities described in the subdivider's plat, and the Village Engineer shall certify in writing to the Village Board that such improvements and utilities meet the minimum requirements of the Village, county, state, and other authorities having jurisdiction, and comply with the following:
A. 
Standards and specifications of design for required land improvements. Design, dimensions, materials, and methods of construction of improvements shall conform to the following general requirements:
(1) 
All storm sewers shall be designed by the Rational Method on the basis of a minimum ten-year storm frequency and shall be sized to adequately carry all tributary areas. Copies of the design computations, together with a drawing defining each drainage area, shall be submitted to the Village.
(2) 
Sewer mains shall be designed according to the latest edition of the Standard Specifications for Water and Sewer Main Construction in Illinois, or according to the Illinois Environmental Protection Agency's Recommended Standards for Sewage Works. The more stringent requirements of either shall apply.
(3) 
All street pavements within the Village shall be constructed in accordance with the following:
(a) 
Standard Specifications for Road and Bridge Construction, State of Illinois, Department of Transportation, Current Edition.
(b) 
The current edition of the Illinois Department of Transportation's Design Manual.
(c) 
In no case shall design thicknesses and materials be less than those specified in Subsection F of this section.
(4) 
Concrete.
(a) 
All concrete used in roadways, sidewalks and driveways shall be portland cement concrete and shall be proportioned according to the applicable sections of the state specifications and shall be designed for a minimum twenty-eight-day compressive strength of 3,500 psi.
(b) 
Air entrainment shall be 4% through 7% and slump between two inches and four inches.
(c) 
Concrete pavement shall be constructed on a minimum four-inch crushed aggregate subbase having a gradation of CA-7.
B. 
Sanitary sewerage system.
(1) 
Subdivisions or lot divisions containing no lots less than one acre in area and located in the unincorporated areas within 1 1/2 miles of the corporate limits of the Village may, with specific approval of the Village Board, be served with individual sewage disposal systems, except that individual sewage disposal systems shall be permitted in subdivisions annexed to the Village after the effective date of this chapter only after the Village Board shall find that connection with a public or community system is not practicable, or there is an agreement between the subdivider and the Village and a guarantee by the subdivider that all lots in the subdivision will be served with a public or community sewerage system within a specified period of time.
(2) 
Except as otherwise provided herein, no residential, commercial or industrial subdivision or development shall be approved unless it is served by sanitary sewers connected to the Village's sewer system.
(3) 
In the case of any structures, whether residential, commercial or industrial, constructed prior to the adoption of this chapter and served by a septic system, the following shall apply:
(a) 
As soon as a public sanitary sewer main is contiguous to and available to service a structure or a septic system, said owner or owners must properly abandon the septic system and connect to the Village's public sanitary sewer system within six months.
(b) 
All sanitary sewers which are installed in the public ways or in easements shall be deemed to be dedicated to the Village upon the acceptance of the public improvements within the subdivision by the Village.
(4) 
Sewer mains shall be of adequate size and shall serve the entire development.
(a) 
Sewer mains shall be designed according to the latest edition of the Standard Specifications for Water and Sewer Main Construction in Illinois and according to the Illinois Environmental Protection Agency's Recommended Standards for Sewage Works. The more stringent requirements of either shall apply.
(b) 
Before commencing the sewer layout, the developer shall confer with the Village to determine the required size and grades for any trunk sewers traversing the subdivision. The Village shall have the ultimate authority to designate trunk sewer and sewer main sizes through any development.
(c) 
All sanitary sewers shall be constructed in accordance with the provisions of the latest edition of the Standard Specifications for Water and Sewer Main Construction in Illinois, as modified and/or more specifically defined in these subsections and sections. In case of conflict, the provisions of the following subsections shall apply.
(d) 
All materials shall be made in the U.S.A.
(5) 
Installation.
(a) 
Said mains shall, in general, be installed in the street right-of-way or in an easement adjacent thereto. In no case shall mains be installed within 10 feet of a building.
(b) 
Sanitary sewers shall be extended to the edge of the development along public rights-of-way and at other points indicated by the Village Engineer.
(6) 
Size. The minimum size of mains shall be eight inches, internal diameter.
(7) 
Sewer services. Sanitary sewer service laterals of a minimum of six-inch internal diameter shall be provided for each lot, parcel, or tract prior to the construction of street pavements. Services shall extend to the property line or to the limit of the easement on which they are placed.
(a) 
Service connections shall consist of a manufactured tee, placed in the sewer line and pitched just above horizontal up to a maximum of 45° to horizontal, a sewer pipe bend as may be required to bring the service back to a near horizontal condition, the necessary lengths of pipe, and a watertight terminus plug.
(b) 
Service sewers shall have a minimum cover of 30 inches on private property and a mandatory 48 inches in public rights-of-way. In all cases where sewer services are within 10 feet of water mains or water services, the sewer service must be 18 inches lower than the water line, or special provisions shall be made to protect the water mains or service lines from contamination in accordance with EPA and State of Illinois standards.
(c) 
Two or more properties, parcels, or lots are not permitted to use a joint building service sewer.
(d) 
A minimum velocity of two feet per second shall be maintained.
(e) 
Service connections shall be marked by a treated lumber board, two inches by four inches, buried to the depth of the service and extending four feet above the ground surface.
(8) 
Sewer alignment. Alignment shall be straight between manholes and follow the layout of the streets or easements.
(9) 
Manholes. Manholes shall be installed not more than 400 feet apart.
(a) 
Manhole diameter. Manhole diameter shall be four feet for sewer diameter of 21 inches and smaller, and five feet for sewer diameter of 24 inches and larger.
(b) 
Inspection manholes. An inspection manhole having a minimum diameter of 48 inches is required for all industrial buildings.
[1] 
The manhole shall be constructed on the building service sewer before it connects to the sewer main and, preferably, shall not be closer than five feet to the building.
[2] 
There shall be no flow into the inspection manhole except the flow from the building for which the inspection manhole is intended.
(10) 
Lift stations. If a lift station is part of the engineering design, it shall be shown in the plan elevation, and the specifications for such lift station shall be submitted with engineering plans.
(a) 
Lift stations shall be of the wet well type with submersible pumps and shall conform in all respect to the standards established by the State of Illinois Environmental Protection Agency and the Village.
(b) 
A trailer-mounted, engine-driven sewage pump of adequate capacity shall be given to the Village for use during power outages.
(c) 
An alarm indicating failure of the lift station pumps or high water shall be installed. It shall have a red-light warning at the lift station and shall have an electronic connection to a visible and audible alarm at the Village's master panel at a location designated by the Village.
(d) 
Lift stations and force mains are not desirable nor recommended and shall be used to serve a development only after all other means to serve the development by gravity sewers have been exhausted and with approval by the Village Board and Village Engineer.
(11) 
Sewer pipe and fittings shall be either semi-rigid composite pipe (truss pipe) (ASTM Spec. D-2680) with solvent weld or gasketed joints, or PVC sewer pipe, DR-35, meeting the requirements of ASTM Spec. D-3034 and ASTM Spec. F-679. Joints shall be flexible elastomeric seals per ASTM Spec. D-3212.
(12) 
Manholes shall be precast concrete and in accordance with the appropriate provisions of Section 32 of the referenced Standard Specifications for Water and Main Construction in Illinois. Frames and closed lids in roadways shall be Illinois Department of Transportation designation "TYPE 1 FRAME AND CLOSED LID." Closed lids shall have a concealed pick hole which does not extend through the lid, and must have rubber O-ring gasket seals. Frames shall be installed with rubber chimney gaskets.
(13) 
Where sanitary sewer mains or lift stations of larger capacity or depth than required to serve only the subdivision as delineated in the preliminary plat are required by the Board to serve future growth in the vicinity of the subdivision, the subdivider shall pay the total cost of installation. The Village will pay the difference in cost between the size required for the subdivision and the larger size required by these regulations and the Village Board, pursuant to an agreement entered into between the subdivider and the Village prior to initiation of the subdivision improvement.
C. 
Stormwater drainage system.
(1) 
General. An adequate system of stormwater drainage shall be constructed and installed consisting of pipes, tiles, manholes, inlets, and other necessary facilities that will adequately drain the development and protect roadway pavements and will prevent the accumulation of stormwater at any place under normal conditions.
(a) 
Any existing drain tiles encountered during construction must be left undisturbed or shall be attached to the proposed storm drainage system at locations indicated by the Village inspector.
(b) 
Drain tile located under roadways shall be replaced with concrete tile.
(2) 
Design. The following shall govern the design of any improvement with respect to the drainage and detention of stormwater runoff:
(a) 
Layout. The subdivision shall be designed in such a manner as to preserve and utilize natural streams, channels, and detention basins.
(b) 
Stormwater release rate. The allowable release rate of stormwater for a one-hundred-year storm from developments shall not exceed historic/predevelopment discharge rates for a ten-year storm or the capacity of the receiving stream or drainage system, whichever is less.
(c) 
Stormwater storage. Excess runoff from a one-hundred-year/twenty-four-hour storm with an SCS Type II distribution shall be stored on site within appropriately designed detention facilities such that the allowable release rate is not exceeded and there is no ponding in streets or on buildable lot areas, except parking lots.
(d) 
Bypass flow. Drainage systems shall have adequate capacity to pass through the development the runoff from all upstream areas for a ten-year storm.
(e) 
Backyard swales. Backyard swales are permitted in residential areas subject to the following regulations:
[1] 
Maximum and minimum slopes and general design criteria of the Federal Housing Administration's Minimum Property Requirements shall be acceptable except as herein modified.
[2] 
No continuous swale shall have a length exceeding 300 feet before discharging into a storm sewer system.
[3] 
The minimum grade of the flow line shall be 0.5%.
[4] 
A site grading plat showing proposed finished yard elevations and proposed top of foundation elevations shall be submitted with the final plat and improvement construction drawings.
(f) 
Storm sewer outfalls. Storm sewer outfalls shall be so designed that when the receiving stream or drainage system is at full capacity, the storm sewer will continue to discharge at its design flow rate.
(g) 
Crown of street pavements. The crown of street pavements hereafter built adjoining or near streams, floodwater runoff channels, or basins shall be not lower than the established high-water elevation plus two feet in the case of major streets, and plus one foot in the case of other streets.
(h) 
Bridges and culverts; drainage into ditches and watercourses.
[1] 
Waterway openings of bridges and culverts. Waterway openings of bridges and culverts hereafter built over streams of floodwater runoff channels shall be designed with a waterway opening large enough to handle the flow from a one-hundred-year frequency storm.
[2] 
Any outfall storm sewer drains into an existing open ditch or natural watercourse shall have reinforced concrete headwall and a concrete apron at least 10 feet in radius from the center point of the outfall.
(3) 
Drainage plan. A comprehensive drainage plan must be submitted to the Village Engineer which incorporates the aforementioned rules and shall be accompanied by maps or other descriptive material showing the following:
(a) 
The extent and area of each watershed tributary to the drainage channels in the subdivision.
(b) 
The street storm sewers and other storm drains to be built, the basis of their design, the outfall and outlet locations and elevations, the receiving stream or channel and its high-water elevation, and the functioning of the drains during high-water elevations.
(c) 
Existing streams and floodwater runoff channels to be maintained and new channels to be constructed, their location, cross-sections, and profiles.
(d) 
Existing culverts and bridges, drainage areas, elevation and adequacy of waterway openings, new culverts and bridges to be built, their materials, elevations, waterway openings, and basis of design.
(e) 
Existing detention ponds and basins to be maintained, enlarged, or otherwise altered and new ponds or basins to be built with dams and their design.
(4) 
Construction requirements for detention ponds.
(a) 
Detention ponds containing permanent water.
[1] 
Detention reservoirs containing permanent lakes must have a water area of at least 1/2 acre and a minimum depth of 10 feet over at least 25% of the total area. The remaining lake area must have an average depth of at least three feet and should have no extensive shallow areas.
[2] 
In excavated lakes, the underwater side slopes in the lakes must be stable. In the case of valley storage, natural slopes may be considered to be stable.
[3] 
A safety ledge four feet to six feet in width is required and must be installed in all lakes approximately 36 inches below the permanent water level.
[a] 
In addition, a ledge 12 inches to 18 inches above the permanent water line must be provided.
[b] 
The slope between the two ledges must be stable and of a material which will prevent erosion due to wave action, such as stone or rip-rap.
[4] 
The reservoir must be designed to provide for the easy removal of sediment which will accumulate in the lake during periods of reservoir operations.
[5] 
Dikes shall be a minimum of four feet wide with 3:1 side slopes or flatter. The top of the dike must be a minimum of one foot above the peak stage for a one-hundred-year storm. An emergency spillway shall be provided for storm runoff volume in excess of a one-hundred-year/twenty-four-hour storm.
(b) 
Dry detention ponds. The dry detention ponds should be designed to serve multi-purposed functions. Recreational facilities, aesthetic qualities, etc., as well as floodwater storage must be considered in planning the reservoir.
(c) 
Other detention storage.
[1] 
Underground storage. All or a portion of the detention storage may be provided in underground or surface detention facilities to include basins, tanks, swales or oversized storm sewers.
[2] 
Parking lot storage. Paved parking lots may be designed to provide temporary detention storage of stormwater on all or a portion of their surfaces.
[a] 
Outlets shall be designed so as to slowly empty the stored waters, and depths of storage must be limited to a maximum of nine inches.
[b] 
Inlets shall be located in driving aisles whenever possible.
(d) 
Safety features. The design of detention storage facilities shall incorporate safety features, particularly at outlets, on steep slopes, and at any attractive nuisances to include, as necessary, fencing, hand rails, lighting, steps, grills, signs and other protective or warning devices to restrict access during critical periods and to afford some measure of safety to both authorized and unauthorized persons.
[1] 
Safety screens must be provided for any pipe or opening to prevent children or large animals from crawling into the structures. A maximum opening of six inches is required.
[2] 
"Danger" signs must be mounted at appropriate locations to warn of deep water, possible flood conditions during storm periods, and other dangers that exist. Fencing may be required if deemed necessary by the Village Engineer.
[3] 
All slopes and the bottom of dry detention ponds are to be sodded. All other areas are to be seeded.
[4] 
The bottom of all dry detention areas shall contain a four-foot-wide concrete paved ditch at the line of flow, from the basin inlet to the outlet.
(e) 
Responsibility of maintenance of detention ponds. The responsibility for maintenance during construction and thereafter shall be the responsibility of the developer/owner.
[1] 
Maintenance shall consist of, but shall not be limited to, the clean up of accumulated debris, flotsam, or other materials and also the control of the growth of obnoxious weeds or the creation of conditions which support the growth of mosquitoes or other insects.
[2] 
Maintenance shall also consist of proper repairs to such items as inlet structures, outlet structures, side slopes, or other elements of the facility.
(5) 
Stormwater storage basins. The Village shall maintain a complete listing of all storage basins for the storage and detention of stormwater in the Village, whether required under this chapter or otherwise, and may require each basin to be inspected periodically.
(a) 
Such inspection shall be performed at the owner's expense within 90 days and shall be performed by an engineer registered in the state.
(b) 
A report shall be submitted to the Village Engineer, including supporting calculations, stipulating the existing capacity of the storage basins.
(c) 
The Village Engineer may serve notice upon the record owner thereof to restore, repair, or properly maintain any such basin which does not retain its original storage capacity.
(d) 
In the event such notice has not been complied with on or before 90 days after service thereof (unless such time period shall be extended by the President and Village Board), the Village may perform such restoration, repair, or maintenance work as may be necessary to return such stormwater storage basin to its original storage capacity; and the cost thereof shall be a lien in favor of the Village upon the lots, tracts, or parcels benefitted by the stormwater storage basin and the Village may file with the Recorder of Deeds of Grundy County, Illinois, a notice of lien citing this subsection describing the necessary work performed and the reasonable cost thereof to the Village. The lien may be foreclosed pursuant to the Illinois Compiled Statutes. The owner of the stormwater storage basin may also be fined as set forth in this chapter.
(e) 
These regulations shall apply to all stormwater storage basins existing on the date of the adoption of this chapter, as well as all future stormwater storage basins.
(6) 
Storm sewers. Storm sewers shall be constructed throughout the entire subdivision to carry off water from all inlets and catch basins and shall be connected to an adequate outfall.
(a) 
Design.
[1] 
The storm sewer system shall be separate and independent of the sanitary sewer system.
[2] 
All storm sewers shall be designed by the Rational Method on the basis of a minimum ten-year storm frequency and shall be sized to adequately carry all tributary areas. Copies of the design computations, together with a drawing defining each drainage area, shall be submitted to the Village Engineer.
(b) 
Velocity. Minimum velocity shall be three feet per second and maximum velocity shall be 10 feet per second for all storm sewer installations.
(c) 
Spacing for surface collectors. Maximum spacing for surface collectors shall be 400 feet or as directed by the Village Engineer.
(d) 
Inlets. Inlets shall be provided at all low areas and shall be provided so that surface water is not carried across or around any intersection of streets.
(e) 
Allowable materials for storm sewers.
[1] 
Pipe materials shall be concrete pipe or reinforced concrete pipe.
[2] 
Other materials for storm sewer construction may be used in special cases only upon approval by the Village Engineer and the Village Board.
[3] 
All materials shall be made in the U.S.A. and approved by the Village Engineer.
[Amended 7-27-2016 by Ord. No. 16-16]
(f) 
The minimum size for all storm sewers shall be 12 inches.
(7) 
Storm sewer structures.
(a) 
Manholes.
[1] 
Location.
[a] 
Manholes are utilized to provide access to continuous underground storm sewers for the purpose of inspection and clean-out and to permit a change in direction, grade and size of sewer. Typical locations where manholes should be specified are:
[i] 
Where two or more storm sewers converge.
[ii] 
At intermediate points along tangent sections.
[iii] 
Where pipe size changes.
[iv] 
Where an abrupt change in alignment occurs.
[v] 
Where an abrupt change of the grade occurs.
[b] 
Manholes should not be located in traffic lanes; however, when it is impossible to avoid locating manholes in a traffic lane, care should be taken to ensure they are not in the normal vehicle path.
[2] 
Spacing. The spacing of manholes should be in accordance with the following:
Size of Pipe
(inches)
Maximum Distance
(feet)
12 to 54
400
Over 54
600
[3] 
Types. A manhole, Type A (Highway Standard 1527) with appropriate frame and lid should be provided for the following sewer sizes when the depth exceeds four feet:
[a] 
When the sewer pipe diameter is 18 inches or less, a four-foot-diameter manhole should be provided.
[b] 
When the sewer pipe diameter is 21 inches to 42 inches inclusive, a five-foot-diameter manhole should be provided.
[c] 
When the sewer pipe diameter is 48 inches or larger, a six-foot-diameter manhole (Standard 2395) or a reinforced concrete pipe tee (Standard 2263) or a special design manhole should be provided.
[4] 
Hydraulic losses. The following criteria should be used to estimate hydraulic losses in storm sewer manholes:
[a] 
Allow a drop of 0.1 foot in a through manhole where there is no change in the diameter of the sewer pipe.
[b] 
Allow a drop of 0.2 foot in the presence of one lateral or bend.
[c] 
Allow a drop of 0.3 foot when two laterals are present.
[d] 
In a through manhole where there is a change in the diameter of the sewer pipe, no loss should be allowed if 0.8 foot depth in each sewer pipe is attained by lowering the larger pipe.
[5] 
Pipe connections. The pipe tee and wye connections are permitted for connecting lateral lines from pavement inlets to main storm sewer lines, provided the following conditions are met:
[a] 
Manholes are provided at the required intervals.
[b] 
The minimum lateral size is 12 inches or larger. Precast connections are required.
[6] 
Junction chambers. The junction of small sewers is made in manholes. On occasion, junction chambers of special design are required to joint two or more converging large-size storm sewers. In design, a smooth transition is essential to prevent turbulence in flow which would cause eddies and deposition of solids. Normally, junction chambers should not be utilized when the trunk sewer is less than 42 inches in diameter.
(b) 
Inlets and catch basins.
[1] 
Types.
[a] 
Catch basins are drainage structures utilized to collect surface water through grate or curb openings and convey it to storm sewers or direct outlet to culverts and ditches. Grate inlets should be provided with appropriate frames and grates as provided in Section B of the Highway Standards.
[b] 
A Catch Basin Type C should be utilized when the sewer pipe diameter is 15 inches or less and the depth of pipe is not more than four feet. For larger diameter pipes or where there is both an incoming and outgoing pipe in the inlet, a larger diameter inlet structure, such as Inlet Type B (Standard 2349) or a three-, four-, and five-foot-diameter catch basin or manhole should be specified. When such a structure is used in a shallow pipe situation, a precast reinforced concrete flat slab top, shown on Standard 2354, should be used in lieu of the standard conically tapered top.
[2] 
Catch basins used for the drainage of roadway surfaces shall be combination catch basins. These catch basins consist of both a curb opening and a grate inlet acting as a unit.
(c) 
Service connections. A four-inch PVC storm sewer service line shall be provided for each lot within the subdivision. All residential stormwater sump discharge lines shall be attached to this service line. At locations where it is not practical to connect these storm sewer service lines directly to the storm sewer in the parkway, minimum eight-inch PVC storm sewer service laterals shall be placed in a five-foot easement parallel to and behind the sidewalk. Said laterals should be connected to the storm sewer system at inlets or catch basins. Service connections directly to the storm sewer pipe are permitted only with precast connections in order to preserve the structural and hydraulic integrity of the mainline sewer.
D. 
Water supply system.
(1) 
General.
(a) 
No residential, commercial or industrial subdivision, or PUD shall be approved unless it is served by the Village's water supply system.
(b) 
In the case of any structures, whether residential, commercial or industrial, constructed prior to the adoption of this chapter and served by a private well system, the following shall apply:
[Amended 7-27-2016 by Ord. No. 16-16]
[1] 
As soon as a Village water main is contiguous to and available to serve a structure or an area on a private well system, the owner must properly abandon the private well system and connect to the Village's public water supply system within one year of the availability of the public water supply system.
[2] 
All water supply systems which are installed in the public ways or easements shall be deemed to be dedicated to the Village upon acceptance of the subdivision.
(c) 
Consideration shall be given to water reclamation and reuse in commercial and industrial tracts for the purpose of conservation and relief of demands on existing residential supply.
(d) 
Evidence shall be presented by the subdivider that the local utilities can satisfactorily serve the area by the utility easements shown.
(e) 
There shall be no physical connection between a potable and a nonpotable water supply.
(2) 
Design. Water distribution mains shall be of adequate size and shall serve the entire development.
(a) 
Design. Water mains shall be designed according to the Standard Specifications for Water and Sewer Main Construction in Illinois (current edition) or according to the Recommended Standard for Water Works, adopted by the Great Lakes Mississippi River Board of State Public Health and Environmental Managers. The more stringent requirements of either shall apply.
(b) 
Installation.
[1] 
Said mains shall, in general, be installed in the street right-of-way, but in no case shall mains be installed within 15 feet of a building.
[2] 
All water mains shall be installed with a minimum depth of cover of 4 1/2 feet, measured from final grade to the top of the pipe.
[3] 
Mains shall be extended to the property line of the development along public rights-of-way and at any other location indicated by the Village Engineer.
[4] 
All excavation, backfilling, restoration of surfaces, and all related work shall be completed in accordance with this chapter.
(c) 
Size. The minimum size shall be 10 inches, internal diameter, in residential areas and 12 inches, internal diameter, in all other areas. The size of water mains may be reduced with the recommendation of the Village Engineer, the Coal City Fire Department, the Planning Commission and the approval of the Village Board.
(d) 
Gridiron or looping of mains.
[1] 
Each six-inch water main, if approved, shall be looped (except culs-de-sac or stubbed streets, unless deemed necessary by the Village Engineer) so that runs between connections to six-inch or larger size mains shall not be greater than 1,200 feet.
[2] 
Each eight-inch water main, if approved, shall be looped so that runs between connections to mains eight inches or larger shall not be greater than 1,400 feet in a commercial area or 1,800 feet in residential areas.
[3] 
Each ten-inch water main shall be looped so that runs between connections to mains 10 inches or larger shall not be greater than 2,200 feet.
[4] 
Each twelve-inch and larger water main shall be looped so that runs between connections to mains 12 inches or larger shall not be greater than 3,000 feet.
(e) 
Valves. Valves shall be located on water mains in such a manner as to effectively isolate the sections from the system with minimum disruption.
[1] 
Valves shall be installed so that not over 900 feet of main will be shut off at any given time.
[2] 
If a tee is installed, three valves shall be used.
[3] 
The design engineer shall, by diagrams and/or written reports, set forth his or her basis for location of water main valves.
[4] 
No more than 30 single-family dwelling units shall be without water with the shutting off of any three-valve locations.
(f) 
Valve boxes. Valve boxes shall be used on all main valves and auxiliary valves.
[1] 
Valve boxes shall have a base compatible with the size and type of valve to be operated and shall extend to finished grade ground level.
[2] 
Valve box covers shall be marked "WATER."
(g) 
Thrust blocks. Thrust blocks and retainer glands are required at all valves, hydrants, tees and bends. Retainer glands must be "Mega-Lug" brand or approved equal. All retainer glands shall have one retainer bolt per flange bolt.
[1] 
Engineering drawings shall indicate the location of each thrust block and retainer gland to be installed.
[2] 
Where undisturbed earth is not available or not likely to be available to back up pressure-type thrust blocks, the Village Engineer shall specify stainless steel (#316) tie rods and hex nuts with or without anchor-type concrete thrust blocks and retainer glands.
(3) 
Fire hydrants.
(a) 
Fire hydrants shall match the hydrants generally installed in the Village's water system and shall be furnished by a manufacturer considered standard by the Village. The brand and model of fire hydrants must be approved by the Village Water Department.
(b) 
Each hydrant shall be provided with a six-inch auxiliary gate valve.
[1] 
Two three-fourths-inch threaded stainless steel rods (#316) with stainless steel hex nuts shall be installed to tie the auxiliary gate valve to the water main and connecting tee. All material used to construct these ties shall be stainless steel.
[2] 
Auxiliary valves shall be provided with valve boxes having covers marked "WATER."
[3] 
Location.
[a] 
Fire hydrants shall be located at intervals of no more than 300 feet in commercial and industrial areas, and no more than 500 feet in residential areas, and at each cross street with the subdivision or as approved by the Coal City Fire Department and Village Board.
[b] 
If the location or configuration of a commercial building requires it, then private fire hydrants shall be installed.
[c] 
Hydrants shall be located for easy access by the Fire Department.
(4) 
Water services. The plans, except for residential developments with individual services for each unit, shall show the calculated static water pressure at the lowest and highest ground elevations on the site. Calculations shall be presented showing that the proposed water services are of a large enough size to supply an adequate flow of water at the outlet of the meter.
(5) 
Materials. Water system materials shall be as follows:
[Amended 7-27-2016 by Ord. No. 16-16]
(a) 
Water mains shall be either AWWA C-900 PVC, having a minimum DR of 18 or the type of pipe shall have rubber ring gasket push-on joints. All plastic water mains and services shall utilize tracer wire.
(b) 
Water main fitting shall be cement-lined ductile iron with mechanical joints. Fittings shall be capable of withstanding the same system pressures as the adjacent pipe.
(c) 
Valves for the mains or for auxiliary fire hydrant valves shall be mechanical joint cast iron bodied, resilient seat gate valves, Clow or equal, with arising stem and two rubber O-ring packing. Each valve shall be furnished with a cast iron road box with a cover marked "WATER."
(d) 
Fire hydrants shall be approved hydrants with mechanical joints. All hydrants shall have a ground-level breakaway flange feature and safety stem coupling. Hydrants shall have six-inch inlet connections, 5 1/4-inch compression-type main valve openings, 2 1/2 inch hose connections, and one 4 1/2-inch pump nozzle, all with National Standard Threads.
(e) 
Water service pipe shall be Type K or one-inch polypipe soft copper tubing, with a minimum size of one inch in diameter.
(f) 
Corporation cocks shall be A.Y. McDonald or equal, with a minimum size of one inch.
(g) 
Curb stops shall be A.Y. McDonald or equal, with a minimum size of one inch. Each stop shall be furnished with a cast iron Buffalo screw-type box with Minneapolis pattern base and cover marked "WATER."
(h) 
All materials must be made in the U.S.A. and approved by the Village Water Department.
E. 
Water and sewer main testing.
(1) 
Sewers. Testing and inspecting of sanitary sewers for acceptability shall be conducted by:
(a) 
Air pressure test; and
(b) 
Deflection for flexible thermoplastic pipe; and
(c) 
Television (providing videotape to Village upon completion) inspection in accordance with the Standard Specifications for Water and Sewer Main Construction in Illinois. Tapes shall contain audio and visual information regarding the location and distances of the camera. A written report by the television inspection company shall accompany the tape report.
(2) 
Water.
(a) 
Hydrostatic test. After the pipe has been laid and partly backfilled as specified below, all newly laid pipe or any valved sections of it shall, unless otherwise expressly specified, be subjected to a hydrostatic pressure of 100 pounds per square inch. Duration of each pressure test shall be for a period of not less than one hour for pipes with uncovered joints and not less than 24 hours for pipes which have been backfilled before tests are made.
[1] 
Procedure for test. After all fittings, service connections and service pipe (to the Buffalo Box) are installed, each valved section of pipe shall be slowly filled with water and the specified test pressure shall be applied by means of a pump connected to the pipe in a satisfactory manner. The pump pipe connection and all necessary apparatus, including gauges and meters, shall be furnished by the contractor. Before applying the specified test pressure, all air shall be expelled from the pipe. To accomplish this, taps shall be made, if necessary, at points of highest elevation and afterwards tightly plugged. All exposed pipes, fittings, valves, hydrants and joints shall be carefully examined during the open trench test. All joints showing visible leaks shall be repaired until tight. Any cracked or defective pipes, fittings, valves, or hydrants discovered in consequence of this pressure test shall be removed and replaced by the contractor with sound material and the test shall be repeated until satisfactory to the Village Engineer.
[2] 
Permissible leakage.
[a] 
Suitable means shall be provided by the contractor for determining the quantity of water lost by leakage under the specified test pressure.
[b] 
Allowable leakage shall be not greater than computed by the following table. (Allowable leakage is shown in gallons/hour 1,000 feet).
Diameter of Pipe
(inches)
Allowable Leakage
Diameter of Pipe
(inches)
Allowable Leakage
2
0.30
18
2.70
3
0.45
20
3.00
4
0.60
24
3.60
6
0.90
30
4.50
8
1.20
36
5.40
10
1.50
42
6.31
12
1.80
48
7.21
14
2.10
54
8.10
16
2.40
60
9.00
[c] 
"Leakage" is defined as the quantity of water to be supplied in the newly laid pipe or any valved section of it necessary to maintain the specified leakage test pressure after the pipe has been filled with water and the air expelled.
[d] 
Flanged pipe shall be "bottle tight."
(b) 
Disinfection of water main.
[1] 
Flushing.
[a] 
Sections of pipe to be disinfected shall first be flushed to remove any solids or contaminated material that may have become lodged in the pipe. If no hydrant is installed at the end of the main, then a tap should be provided large enough to develop a velocity of at least 2.5 feet per second in the main. One 2 1/2-inch hydrant opening will, under normal pressures, provide this velocity in pipe sizes up to and including twelve-inch.
[b] 
All taps required by the contractor for chlorination or flushing purposes or for temporary or permanent release of air shall be provided by him or her as a part of the construction of water mains.
[2] 
Requirement of chlorine. Before being placed into service, all new mains and repaired portions of, or extensions to, existing mains shall be chlorinated so that a chlorine residual of not less than 10 parts per million remains in the water after standing 24 hours in the pipe.
[3] 
Form of applied chlorine. Chlorine shall be applied by one of the methods which follow, subject to approval by the Village Engineer:
[a] 
Liquid chlorine. A chlorine gas-water mixture shall be applied by means of a solution-feed chlorinating device, or the dry gas may be fed directly through proper devices for regulating the rate of flow and providing effective diffusion of the gas into the water within the pipe being treated. Chlorinating devices for feeding solutions of the chlorine gas, or the gas itself, must provide means for preventing the backflow of water into the chlorine.
[b] 
Chlorine-bearing compounds in water. A mixture of water and high-test calcium hypochlorite (65% to 70% CI) may be substituted for the chlorine gas-water mixture. The dry powder shall first be mixed as a paste and then thinned to a one-percent chlorine solution by adding water to give a total quantity of 7.5 gallons of water per pound of dry powder. This solution shall be injected in one end of the section of main to be disinfected while filling the main with water in the amounts as shown in the table which follows.
Chlorine Requirements for 100-Foot Lengths of Various Sizes of Pipe
Amount Required to Give 25 ppm Cl.
Pipe Size
(inches)
Volume of 100-Foot Length
(gallons)
100% Chlorine
(pounds)
1% Chlorine-Water Solution
(gallons)
4
265.3
0.0135
1/6
6
146.5
0.0305
3/8
8
261.0
0.054
2/3
10
408.0
0.085
1
12
588.7
0.120
1 1/2
[c] 
During the construction of said water main, the contractor shall, during the installation, place at each joint approximately one teaspoonful of HTH 6% chlorine compound, or equal.
[4] 
Point of application. The preferred point of application of the chlorinating agent is at the beginning of the pipe line extension of any valved section of it, and through a corporation stop inserted in the pipe. The water injector for delivering the chlorine-bearing water into the pipe should be supplied from a tap made on the pressure side of the gate valve controlling the flow into the pipe line extension. Alternate points of application may be used when approved or directed by the Village Engineer.
[5] 
Rate of application. Water from the existing distribution system, or other source of supply as approved by the Village Engineer, shall be controlled to flow very slowly into the newly laid pipe line during application of the chlorine. The rate of chlorine mixture flow shall be in such proportion to the rate of water entering the newly laid pipe that the dosage applied to the water will be at least 25 parts per million unless otherwise directed by the Village Engineer.
[6] 
Preventing reverse flow. Valves shall be manipulated so that the strong chlorine solution in the line being treated will not flow back into the line supplying the water. Check valves may be used if desired.
[7] 
Retention period. Treated water shall be retained in the pipe at least 24 hours. After this period, the chlorine residual at pipe extremities and at other representative points shall be at least 10 parts per million.
[8] 
Chlorinating valves and hydrants. In the process of chlorinating newly laid pipe, all valves or other appurtenances shall be operated while the pipe line is filled with the chlorinating agent and under normal operating pressure.
[9] 
Final flushing and testing.
[a] 
Following chlorination, all treated water shall be thoroughly flushed from the newly laid pipe at its extremity until the replacement water throughout its length shows, upon test, the absence of chlorine. In the event chlorine is normally used in the source of supply, then the tests shall show a residual not in excess of that carried in the system.
[b] 
After flushing, water samples collected on two successive days from the treated piping system, as directed by the Village Engineer, shall show satisfactory bacteriological results. Bacteriological analysis must be performed by a laboratory designated and furnished by the owner and approved by the Director of the Illinois Department of Public Health.
[10] 
Repetition of flushing and testing. Should the initial treatment result in an unsatisfactory bacterial test, the original chlorination procedure shall be repeated by the contractor until satisfactory results are obtained.
(3) 
Upon completion of the construction of all sewer and water service connections with the utility mains, three accurate maps showing the exact location of all such sewer and water mains, together with manholes, shutoff valves, and similar facilities being part thereof, by distances in feet from street lines, and of all such service connections in distances in feet from side lot lines approved by the Village Engineer of the Village of Coal City, shall be filed with the Village Clerk.
F. 
Streets and alleys.
(1) 
Street grading.
(a) 
All stumps, trees that cannot be saved, boulders, and similar items in the street right-of-way shall be removed.
(b) 
Before any paving work is commenced, all street and alley grading shall be properly completed as shown on the grading plan approved by the Village Engineer.
[Amended 7-27-2016 by Ord. No. 16-16]
(c) 
After grading of streets and alleys is completed and approved, and before any base course of the roadway pavement is laid, all of the underground work, such as water, sewer, and gas mains, house service connections therewith, and all underground conduits for electric and telephone lines, shall be completely installed in place and approved.
(d) 
When considered necessary by the Village Engineer, settlement of all trench backfill shall be accelerated by means of water introduced through holes jetted into backfilled trenches to a point approximately two feet above the top of the sewer pipe. The holes shall be jetted not greater than six feet apart unless otherwise directed by the Village Engineer. The jetting process shall conform to the standards set forth in the State of Illinois Standard Specifications for Road and Bridge Construction, Section 66.7. Any depressions which develop within the street right-of-way due to settlement of backfilling material shall be refilled and repaved at the subdivider's expense, in a manner approved by the Village Engineer.
(e) 
The binder course of the roadway pavement shall not be laid until backfilling of all trenches across the roadway have been completely settled or compacted to the satisfaction of the Village Engineer. Said trenches shall be backfilled with trench backfill material, mechanically tamped in twelve-inch lifts, and brought to the required grade. The surface course shall be placed in accordance with the requirements set forth in Subsection F(2)(d) of this section.
(f) 
Corings, at least three per block, on request of the Village Engineer, shall be taken under Village supervision after the paving has been completed and after the subdivider has requested acceptance of the street.
(2) 
Roadway pavement.
(a) 
All streets and alleys within the subdivision shall be improved with a durable all-weather bituminous concrete or concrete surface roadway. The pavement shall be equal to or superior to a pavement consisting of a base course of a total thickness of not less than that shown in the following table in Subsection F(2)(c) of this section when thoroughly compacted. Materials and method of construction shall be in compliance with the Standard Specifications for Road and Bridge Construction, State of Illinois Department of Transportation, current edition and the current edition of the Illinois Department of Transportation Design Manual, and shall be sufficient, in the opinion of the Village Engineer, to withstand the traffic that the roadways will presumably be subjected to.
(b) 
All streets shall be improved with roadway pavements to an overall width in accordance with the following minimum dimensions:
Pavement Width (Between Back of Curbs)
Type of Street
Residential Subdivision
(feet)
Manufacturing or Business Subdivision
(feet)
Arterial streets
36
66
Collector streets
36
50
Minor streets
36
40
Cul-de-sac streets*
36
40
Frontage roads
26
36
Thoroughfares
In accordance with federal, state, county, and local requirements
Half streets
1/2 the width of proposed street but not less than 20
Not permitted
Alleys
14
20
NOTES:
Roadway pavements in a cul-de-sac street terminus shall have a minimum diameter, measured from backs of the outside curb, of 110 feet for residential subdivisions and 120 feet for manufacturing and business subdivisions. Roadway pavements in "T" type or other types of terminus shall be as required by the Village Board.
*
No islands or curbs will be allowed in the interior of any cul-de-sac roadways.
(c) 
Installation requirements.
[Amended 7-27-2016 by Ord. No. 16-16]
[1] 
Roadway pavements shall be installed in accordance with the following minimum requirements.
[2] 
All flexible pavements shall utilize a roadway stabilization fabric (four ounces per square yard), below the base course material, as approved by the Public Works Director and/or his or her designee.
Type of Subdivision
Base Course
Residential
Manufacturing or Business
Crushed stone
9 inches
10 inches
or
Bituminous aggregate mixture
8 inches (over 4 inches CA-6)
8 inches (over 4 inches CA-6)
Type of Subdivision
Type of Surface
Residential
Manufacturing or Business
Bituminous
Bituminous material prime (MC-30)
0.35 gallon/square yard
0.35 gallon/square yard
Binder course
1 1/2 inches
2 inches
Surface course
1 1/2 inches
2 inches
or
Portland cement concrete
Pavement
6 inches (over 4 inches CA-7)
8 inches (over 4 inches CA-7)
(d) 
Placement of bituminous concrete binder course.
[1] 
Bituminous concrete binder course shall be placed during the construction season in which the aggregate base course has been placed. Bituminous concrete surface course shall not be placed until the construction season following the season in which the binder course was placed. The developer shall be responsible for repairs to the binder course that may be required prior to the placement of the surface course. The Village Engineer must give written approval for the surface course to be placed. In no case shall the surface course be placed without the binder course being cleaned to the satisfaction of the Village Engineer, and without a tack coat of RC-70 bituminous material prime coat (0.1 gallon/square yard) being applied to the binder course.
[2] 
In no case shall building permits be issued within the subdivision until the bituminous concrete binder course has been placed and accepted by the Village.
(3) 
Curbs and gutters. Concrete curbs and gutters shall be constructed along the outside edges of all street pavements of the type designated by the Village Engineer and installed in accordance with Village standards and specifications; in no case shall the total width of the combination curb and gutter be less than 24 inches and the gutter flag thickness be less than eight inches. The curb and gutter proposed typical section shall be approved by the Village Engineer prior to final plans being approved.
(4) 
Access driveways. A paved access driveway from the street lot line to the street pavement shall be provided. Pavement shall be of concrete (six-inch thickness with W.W.M.) construction installed in accordance with Village standards and specifications.
(5) 
Side-strips (parkways). Side-strips shall be required on both sides of all streets. They shall be graded by the subdivider with at least four inches of topsoil. Median strips shall be considered as side-strips unless paved.
(6) 
Public sidewalks. (See also Chapter 150, Building Regulations, Article II.)
[Amended 7-27-2016 by Ord. No. 16-16]
(a) 
Sidewalks shall be installed on both sides of the street in residential subdivisions. The sidewalks shall not be constructed by the developer with the other required subdivision improvements, but shall be placed by the lot owner after construction of the residence.
(b) 
Sidewalks shall be located 12 inches from the street right-of-way lines and shall be constructed in accordance with the following:
[1] 
All sidewalks shall be constructed of portland cement concrete (Class X, 6.4 bags/cubic yard) with a twenty-eight-day compressive strength of 3,500 pounds. Minimum slump: three inches; maximum slump: six inches. All concrete shall be air-entrained. Other admixtures shall be approved by the Village Engineer.
[2] 
Residential districts:
[a] 
Minimum width: four feet.
[b] 
Minimum thickness: four inches, over a compacted three-inch granular base.
[3] 
Commercial districts:
[a] 
Minimum width: five feet.
[b] 
Minimum thickness: five inches, over a compacted three-inch granular base.
[4] 
In residential areas and commercial areas, at locations where sidewalks are constructed through a driveway, the sidewalk thickness shall be increased to six inches and a welded wire mesh shall be placed in the concrete placement.
(c) 
Grade.
[1] 
Sidewalk grades must be approved by the Village Building Inspector or Village Engineer and sidewalks, which are the construction responsibility of the lot owner, shall not be constructed with the subdivision improvements, but shall be constructed upon completion of the building on individual lots prior to occupancy.
[2] 
In general, the grade of the residence edge of the sidewalk shall be five inches above the top of curb. The sidewalk shall have one-inch slope toward the curb. The Building and Zoning Official may approve sidewalks to be placed at grades above or below this recommended grade.
(7) 
Streetlighting. A streetlighting system shall be installed in business and manufacturing subdivisions and at street intersections and special problem locations in residential subdivisions. Such streetlighting system shall be installed with the subdivision improvements. In no case shall building permits be allowed to be issued until the streetlights have been installed in the approved subdivision. The total cost of lighting and installation shall be the responsibility of the developer.
(8) 
Trees. The type of species, location and spacing of all trees must be approved by the Village prior to planting within the street right-of-way.
G. 
Pedestrianways. Paved walks having a width of not less than five feet shall be installed in accordance with the Village sidewalk specifications.
H. 
Public utilities.
(1) 
All utility lines for telephone, electric, cable TV and gas service and distribution in the subdivision shall be placed underground or, when approved by the Village Board, may be overhead when located in easements along rear lot lines or side lot lines at locations of extensions of utility installations between blocks. Installation of such facilities shall be made in compliance with the applicable orders, rules and regulations of the Illinois Commerce Commission now or hereafter effective and the subdivider shall be responsible for compliance with rules and regulations, now and hereafter effective and filed with said Commission pursuant to the Illinois Public Utilities Act, of any public utility whose service will be required for the subdivision with respect to the provision of such facilities.
(2) 
Underground telephone, cable television, electric and gas service shall be placed within easements or dedicated public ways in a manner which will not conflict with other underground services. Further, all transformer boxes shall be located so as not to be unsightly or hazardous to the public. In no case shall building permits be issued within the subdivision until all utilities are in place and functional without specific recommendation from the Planning Commission and approval of the Village Board.
I. 
As-built plans. Upon completion of the installation of improvements in a subdivision, one set of plans suitable for use in reproduction, which shows all improvements as actually installed in the field, shall be filed with the Village Clerk.
J. 
Signs. Street signs, traffic control signs (but not traffic control devices), and any other sign that may be required by the Village shall be installed in accordance with the Uniform Traffic Code and Village street sign specifications.
[Added 12-11-2006 by Res. No. 06-14]
It is the policy of the Village to require all builders, property owners and developers required to provide traffic control devices in connection with any development in the Village to include an Opticom® or equivalent system which will control the lights at intersections, giving emergency vehicles the green light while stopping cross traffic. These requirements should be included in any and all annexation agreements, development agreements or agreements regarding planned unit developments.
The cost incurred by the Village for the review of plans and specifications by the Village Engineer shall be paid by the owner or subdivider. Such costs shall be paid to the Village Clerk at the time of application for approval of a final plat. All required land improvements to be installed under the provisions of this chapter shall be inspected during the course of construction by the Village Engineer or other Village employee duly appointed by the Village Board. The cost of such inspection shall be at a rate fixed by the Village Board and shall be paid by the owner or subdivider to the Village Clerk.
[Amended 7-27-2016 by Ord. No. 16-16]
Any owner or subdivider desiring to subdivide property presently lying outside the corporate limits of said Village, with the expectation of annexing same to said Village, shall abide by the terms of this chapter and the Building Code and all other ordinances of the Village and shall further be subject to the requirement that any owner of land so annexed must petition to be annexed.
After the effective date of this chapter, no permanent building or structure shall be erected within the right-of way of major thoroughfares as shown on the Official Map of the Village.
[Amended 12-11-2006 by Ord. No. 06-30; 7-27-2016 by Ord. No. 16-16]
No building permit as regulated by the Building Code shall be granted by any governing official for the construction of any building, structure, or land improvement within the subdivision approved for platting or replatting until required utility facilities have been installed and made ready to service the building, structure, or land improvement; and until the roadway is paved with the binder course and until all streetlights are in place and functional, in accordance with the appropriate sections of this chapter. Notwithstanding the provisions of this section, the Village Board may, in its discretion, allow the issuance of a building permit and temporary occupancy permit for model homes. In no case, however, shall a permanent occupancy permit be issued prior to completion of all conditions set forth in this section. For purposes of this section, the term "model home" shall mean a building or structure which is used as an example of a type of unit which may be purchased or rented and is used primarily to offer for sale or rental dwelling units located within the same subdivision or planned unit development.
The Planning Commission may recommend variations from the requirements of this chapter in specific cases which, in its opinion, do not affect the Comprehensive Plan or intent of this chapter. Such recommendations shall be communicated to the Village Board or governing county authorities in writing, substantiating the recommended variation. The Village Board may approve variations from these requirements for subdivisions within the Village limits when, in its opinion, such variations will not adversely affect the Comprehensive Plan or the spirit of this chapter. The Planning Commission shall notify the owner or subdivider and other interested parties as to the time and place of the Planning Commission meeting at which the variation is being considered and where the owner or subdivider and other interested parties will be afforded an opportunity to be heard. Such notice shall be published, posted or delivered and in such form as prescribed by the Village Attorney.
No plat of any subdivision shall be entitled to record in the Recorder's Office or have any validity until it shall have been approved in a manner prescribed in this chapter.
All of such plats of subdivisions, after the same have been submitted and approved as provided in this chapter and recorded in the office of the Recorder of Deeds of Grundy County, shall be filed and kept by the Village Clerk among the records of the Village.
[Added 8-14-2006 by Res. No. 06-06]
It is the policy of the Village to require all property owners and developers requesting annexation agreements, development agreements or planned unit developments to follow the residential design guidelines of the Village, as may be amended from time to time, and that such requirements shall be included in any and all annexation agreements, development agreements or agreements regarding planned unit developments.