City of Olean, NY ARTICLE IV SPECIFICATIONS FOR LAYOUTS AND PLATS

Sec. 22-76 Specifications for sketch plans.

[Res. No. 91-96, 9-24-1996]

A sketch plan shall be drawn on mylar or other suitable tracing material at a scale of not more than 100 feet to one inch. Sketch plans shall include the following information:

(1) The name of the proposal, including the name and address of the subdivider(s).

(2) A north arrow, graphic scale, date, and general location map.

(3) Other land contiguous to the proposal which is controlled by the owner(s) or subdivider(s) with the approximate acreage of such land.

(4) The names of the owners of adjacent lands and the names of adjacent subdivisions.

(5) The boundaries of the tract in relation to adjoining streets (including bearings and distances) and the locations of the nearest utility services.

(6) General topography and drainage patterns of the parcel to be subdivided and parcels within 200 feet of the tract to be subdivided. All pertinent topographic features within the site and adjoining tracts, including existing buildings, watercourses, water bodies, wetlands and wooded areas, shall be shown. Features proposed to be retained as well as those proposed to be removed shall be indicated.

(7) A statement as to the proposed source of water supply and the method of sewage disposal.

(8) The lines of proposed streets and lots (including bearings and distances) as well as lands identified for recreation areas or other permanent open spaces.

(9) If the subdivider intends to develop the tract in sections, the entire tract shall be depicted on the sketch plan with the anticipated sections and the timing of development indicated.

(10) A general statement as to how stormwater drainage is to be accommodated.

(11) An indication of the existing zoning of the tract (both on and adjacent to the site) and any other legal restrictions of use.

(12) The general soil conditions of the entire site proposed for subdivision and its location with respect to a floodway or the boundaries of any areas of special flood hazard (one-hundred-year floodplain).

(13) Locations of any natural gas or oil wells on the site.

(14) A statement as to the consistency of the proposal with the Comprehensive Development Plan 1990-2010.

Sec. 22-77 Specifications for preliminary plats.

[Res. No. 91-96, 9-24-1996]

The preliminary plat shall be drawn on one or more sheets of mylar or other suitable tracing material and shall be clearly marked "Preliminary Plat". The preliminary plat shall be drawn at a scale of not more than 100 feet to one inch. If more than one sheet is required to show an entire tract, an index map drawn to scale showing all sheets shall be provided. Proof of ownership shall be submitted at this time. When the subdivider is someone other than the owner, an affidavit from the owner of the land consenting to the application shall be filed. The plat shall include the following information:

(1) Items (1) through (5) of section 22-76.

(2) Existing streets immediately adjoining and within the tract to be subdivided and the distance(s) to the nearest major street intersection(s).

(3) A topographic map showing the entire site and all lands within 100 feet of the property at not more than a five-foot interval. When additional information is needed to review the subdivision, the common council may require topographic data for land areas within 200 feet of the property boundary.

(4) Existing drains, water lines, and sanitary sewers within the tract to be subdivided and adjacent thereto. Such facilities shall be identified by location, size, type and approximate elevations and gradients, using datum based on mean sea level. Existing as well as proposed defs for such facilities shall also be shown.

(5) The proposed source of water supply and method of sewage disposal. A conceptual layout of each system shall be delineated, including the location of hydrants and the sizing of lines to be installed. Where water mains are not looped, hydrants shall be provided.

(6) An overlay showing all soils and their classification. Areas with moderate to high susceptibility to erosion, if any, shall be highlighted. The subdivider shall also include information about existing on-site vegetation.

(7) A separate drainage report including calculations for runoff and pipe and channel sizing, which clearly describes how runoff is to be handled during grading and development. The use of erosion and sedimentation prevention measures shall be described. The report shall provide sufficient details to indicate how the subdivider will comply with the requirements for stormwater management plans administered by the New York State Department of Environmental Conservation and shall include the preliminary design of bridges and culverts. The design of stormwater retention facilities shall be in accordance with specifications of the city director of public works. The design of bridges and culverts shall conform to the requirements of the appropriate jurisdiction (city department of public works or the state department of transportation).

(8) The approximate lines and gradients of proposed streets and sidewalks and the names of proposed streets.

(9) A preliminary grading plan of the site at a contour interval of two feet. The grading plan shall identify the locations and approximate sizes of cuts and fills and cross sections for any final grading steeper than three foot horizontal to one foot vertical (3 to 1), or where the cut or fill will be more than five feet.

(10) The approximate location of proposed lot lines, the acreage or square footage contained in each lot and, for identification purposes, individual lot numbers. If necessary, the setbacks of any proposed lot lines from existing buildings shall be noted.

(11) The locations and dimensions of areas proposed as permanent open space.

(12) The extent and sequence of the phases in a subdivision proposed to be developed in sections.

(13) The location of any municipal boundary lines and zoning district lines within the tract.

(14) The required and actual areas, yards and setbacks of any non-conforming lots.

(15) Copies of any deed restrictions or covenants as they may apply to any or all parts of the subdivision.

(16) The location, type and ownership of any natural gas or oil wells within the proposed subdivision.

(17) The location and type of any known potentially hazardous materials, either on or adjacent to the site.

(18) The location and quality of water bodies directly adjacent to the proposed subdivision.

(19) An indication of any federal, state or county permits that may be required.

(20) The locations of any buffers to be provided either during or after the completion of construction.

(21) Facilities for fire protection.

(22) Facilities for vehicular and pedestrian traffic, circulation and parking.

(23) The locations of major trees and whether such trees are proposed to be saved or removed.

Sec. 22-78 Specifications for final plats.

[Res. No. 91-96, 9-24-1996]

The final plat shall be drawn in ink on mylar, linen or other suitable material for filing in the Catteraugus County Clerk's Office. Said plat shall contain sufficient survey data to readily determine the location, bearing and length of all lines shown thereon and to permit the reproduction of such lines upon the ground. The final plat submission shall consist of three components the construction sheet, the record map and the drainage and erosion control plan, as described in the subsections that follow. Two mylar copies shall be submitted to the common council. One approved copy shall be retained by the city; the other shall be filed with the county clerk.

(1) Final plat construction sheet. The construction sheet shall not be larger than 34 by 44 inches in side, nor smaller than 18 by 34 inches. It shall be drawn at a scale of not more than 50 feet to one inch and shall contain the information listed below. Where more than one sheet is required to depict the entire subdivision, an index map drawn to scale showing all sheets shall be provided. All data shown on the construction sheet shall be in accordance with the requirements of the city director of public works and the city's construction specifications and shall include:

a. Items (1) through (3) of section 22-76.

b. The lines of existing and proposed streets and sidewalks both within and immediately adjoining the subdivision.

c. The names of existing and proposed streets.

d. Plans and typical cross sections of proposed streets and sidewalks.

e. Profiles of proposed streets at a suitable vertical scale showing finished grades in relation to the existing ground elevation.

f. The precise layout of proposed lots, including lot numbers.

g. Provisions for water supply and sewage disposal, and, if applicable, evidence that such provisions have received the approval of the Cattaraugus County Department of Health.

h. The location and size of existing and proposed stormwater pipes, sanitary sewer lines and watermains on the property including, also, those into which any connection is proposed.

i. The locations of survey monuments, Prior to the acceptance of the dedication of new streets, a certificate by a surveyor or engineer shall be filed certifying that the above monuments have been placed as indicated on the final plat map, at the appropriate stage of construction as determined by the city director of public works.

j. Plans for any proposed neighborhood park or playground within the subdivision including landscaping.

k. A planting plan for street trees indicating the location, varieties, and sizes of any trees to be planted and of existing trees to be preserved.

l. Brief apecifications, or reference to city standards, for all facilities to be constructed or installed within the subdivision.

m. Specifications for all bridges and culverts, and approvals from the appropriate jurisdiction (e.g., the state department of transportation or the city department of public works), if needed.

n. The locations of any natural gas or oil wells within the subdivision.

o. Certification by an engineer or surveyor as evidence of professional responsibility for the preparation of the construction sheet.

(2) Final plat record map. Unless the Cattaraugus County Clerk specifies otherwise, the record sheet shall be no larger than 24 by 36 inches in size, shall be drawn on mylar or linen at a scale not greater than 50 feet to one inch and shall show the information listed below. Where more than one sheet is required to show the entire subdivision, an index map drawn to scale showing all sheets shall be provided. The final plat record map shall include:

a. Items (1) and (2) of section 22-76.

b. The boundaries of the subdivision and information showing the location of the subdivision in relation to surrounding properties and streets, including the names of the owners of adjacent lands and the names of adjacent subdivisions. Whenever practicable, the subdivision boundary shall be referenced from two directions to established U.S. Coast and Geodetic Survey monuments or New York State Plane Coordinate monuments. In the event that such monuments have been obliterated or are otherwise unavailable, the subdivision boundary shall be referenced to the nearest highway intersections or to previously established monuments nearby in other subdivisions or on public lands. Any combination of types of reference points that fulfill the requirements for exact measurements from the subdivision boundary to reference points previously established for or by a public agency may be accepted. (Note: If a city coordinate system should be established, then this system shall become the only reference for establishing monuments.)

c. The lines of existing and proposed streets and sidewalks within the subdivision and their interconnection with existing or proposed streets and sidewalks on adjoining properties.

d. The lines and dimensions of proposed lots, which shall be numbered. If a proposed lot contains one or more existing buildings, the setbacks for such buildings shall be indicated.

e. The lines and purposes of existing and proposed easements both within and immediately adjoining the subdivision.

f. The lines, dimensions, bearings and area in square feet of all property proposed to be reserved by deed restriction or covenant for the common use of property owners in the subdivision or for any other reason.

g. The location of monuments to be placed within the subdivision.

h. The locations of existing and proposed water supply lines, storm sewers, and sanitary sewers within the subdivision.

i. The locations of any municipal service boundaries and zoning lines within the subdivision.

j. Written statements as to:

1. The zoning of the property within the subdivision.

2. Compliance of the proposed lots with zoning requirements. If any lots do not comply but are covered by zoning variances, the statement should include reference to such variances. If variances are needed, the document shall specify the nature and location of the variance(s) which are necessary.

3. If the subdivision is approved for cluster development, pursuant to Section 37 of the General City Law, the statement shall include supporting documents that illustrate that the number of lots proposed is equal to or less than the number that would be permitted with a conventional design.

k. The seal and certification by a surveyor or engineer as evidence of professional responsibility for the preparation of the record map and a place for the libre and page numbers when filed.

l. Offers of dedication to the city involving any open space, recreation, street or other improvements and those facilities to be retained by the subdivider, including the method of maintenance and improvement thereof. Such offers shall be received and approved by the city attorney as to their legal sufficiency.

(3) Subdivision drainage plan and erosion control plan. This plan shall be on a separate sheet of the same size and scale as the record map and shall contain the following information:

a. Plans, profiles and typical as well as special cross sections of proposed stormwater drainage facilities including any stormwater detention facilities.

b. Supporting final design data and copies of computations used as the basis for determining design capacities and performance of the proposed drainage facilities.

c. The subdivision grading plan developed to a suitable contour interval, with details to indicate proposed street grades and building site grades and elevations throughout the subdivision. The contours shown on the grading plan shall be on a one-, two- or five-foot interval (when measured vertically). The interval selected shall result in a horizontal distance between contour lines of not more than 100 feet. All grades shall be referenced to United States Coast and Geodetic Survey datum.

d. A stormwater management plan shall be prepared in conformance with the publication "Reducing Impacts of Stormwater Runoff from New Development," including all amendments to that document and other provisions which may, from time to time, be established by the NYS Department of Environmental Conservation. Such plan shall be available on-site at all times during construction.

e. If the subdivision is within or adjacent to the boundary of a one-hundred-year floodplain, the subdivision drainage plan shall contain a detailed analysis of the area with respect to floodplain management and land use.

f. The location of all proposed buildings, if known.

g. The number of each lot.

h. The location and means of controlling erosion within the project limits.

i. Slope stabilization details.

Sec. 22-79 through Sec. 22-100. (Reserved)