Borough of Chalfont, PA Stormwater Management Site Plan Requirements

The plan shall be drawn at a scale of one inch equals 100 feet, one inch equals 50 feet, one inch equals 40 feet, one inch equals 30 feet, one inch equals 20 feet, or one inch equals 10 feet.

Dimensions shall be set in feet and decimal parts thereof, and bearings in degrees, minutes and seconds.

Each sheet shall be numbered and shall show its relationship to the total number of sheets.

The plan shall be so prepared and bear an adequate legend to indicate clearly which features are existing and which are proposed.

The boundary line of the subdivision or land development shall be shown as a solid heavy line.

Plans shall be on sheets no smaller than 18 inches by 22 inches and no larger than 36 inches by 44 inches.

(b)

General information.

The name or identifying title of the project and tax parcel number (if applicable).

The name and address of the owner/applicant/developer.

The name and address of the individual who prepared the plan.

A location map for the purpose of locating the site, at a scale not less than 800 feet to the inch, showing the relation of the tract to adjoining property and to all streets, roads and Borough boundaries, existing within 1,000 feet of any part of the tract.

The plan date and the date of the latest revision to the plan, North point, graphic scale and written scale.

A note on the plan indicating any area that is to be offered for dedication.

[7]

A certificate, signed and sealed by an individual registered in the Commonwealth of Pennsylvania and qualified to perform such duties, indicating compliance with the provisions of this chapter (see Appendix I).[1]

Editor's Note: The stormwater management ordinance's appendixes are on file in the Borough offices.

[8]

The total acreage of the tract.

[9]

A certification statement from the design engineer stating that the plan meets the requirements of this chapter.

[10]

A statement, signed by the applicant and notarized, acknowledging that any revision to the approved SWM site plan must be approved by the Borough of Chalfont and that a revised erosion and sedimentation control plan must be submitted to the Bucks County Conservation District for approval.

(c)

Existing features.

A complete outline survey of the property to be subdivided or developed shall be provided, showing all courses, distances and area and tie-ins to all adjacent intersections.

The location, names and widths of streets, the location of property lines and names of owners, the location of sanitary sewers, storm drains and similar features within the site and within 100 feet of any part of the land to be subdivided or developed, and the location of streams, lakes, ponds or other watercourses outside the project area which will be affected by runoff from the project.

The location, size and ownership of all underground utilities and services (e.g., wells, on-site sewage disposal systems) and any rights-of-way or easements within the property.

The location of existing buildings, streets and other significant features within the property, the location and area of all floodplains, forests, lakes, ponds, watercourses (including drainage swales), wetlands, slopes 8% to 15%, steep slopes 15% to 25%, and steep slopes 25% or steeper.

Contours at vertical intervals of two feet; vertical intervals of five feet for steep slopes (greater than 15%).

Any overlay showing soil types and boundaries and a statement as to where the soils data was obtained.

[7]

Stormwater management district boundaries applicable to the site.

[8]

A detailed site evaluation for projects proposed in areas of frequent flooding, karst topography and other sensitive areas, such as brownfields and source water protection areas.

(d)

Proposed features.

The proposed land use, total number of lots and dwelling units and extent of commercial, industrial or other nonresidential uses.

The locations and dimensions of all proposed streets, sidewalks, lot lines, building locations, parking compounds, impervious and semi-impervious surfaces (total area), sanitary sewer facilities, water facilities and areas proposed for public dedication.

Proposed changes to land surfaces and vegetative cover, including areas to be cut or filled, as shown on a plan for surface drainage.

Final contours at vertical intervals of two feet; vertical intervals of five feet for steep slopes (greater than 15%).

A plan and profiles of proposed stormwater management facilities, including horizontal and vertical location, size and type of material. This information shall be of the quality required for the construction of all facilities and shall include any calculations, assumptions and criteria used in the design of the facilities, a schedule for installation of such facilities and a proposed sequence of construction.

The locations of septic tank infiltration areas and wells when infiltration methods such as cisterns, seepage beds or trenches, infiltration basins or porous pavement are used; also, soil percolation tests or other approved infiltration tests and submission of the data and test locations to substantiate infiltration rates used in the drainage calculations.

[7]

Plans and profiles of all erosion and sedimentation control measures, temporary as well as permanent, including all calculations, assumptions and criteria used in designing the controls and a schedule for their implementation.

[8]

A map which illustrates:

[a]

All natural features.

[b]

A preliminary regrading plan that illustrates all disturbance of the identified natural feature areas, with the amount of each natural feature disturbed indicated and illustrated on the map.

[9]

Rights-of-way and/or easements proposed to be created for all drainage purposes, utilities or other reasons.

[10]

The total extent of the drainage area upstream from the site and all downgradient receiving channels, swales and water to which stormwater runoff or drainage will be discharged.

(3)

A description of an ownership and maintenance program, in a recordable form, that clearly sets forth the ownership and maintenance responsibility for all temporary and permanent stormwater management facilities, including the following:

(a)

A description of the method and extent of the maintenance requirements.

(b)

When maintained by a private entity, identification of a responsible individual, corporation, association or other entity for ownership and maintenance. Deed covenants and restrictions must be submitted to provide for maintenance by this entity.

(c)

When maintained by a private entity, a copy of the legally binding document which provides that the Borough of Chalfont shall have the right to:

Inspect the facilities at any time.

Require the private entity to take corrective measures and assign the private entity reasonable time periods for any necessary action.

Authorize maintenance to be done and lien the cost of the work against the properties of the private entity responsible for maintenance.

(d)

Where the stormwater management site plan proposes that the Borough of Chalfont own or maintain the facilities, a description of the methods, procedures and the extent to which any facilities shall be turned over to the Borough of Chalfont.

(4)

Financial security for the completion of stormwater management facilities as set forth in § 353-30 of this chapter.

(5)

A maintenance guaranty, as set forth in § 353-30 of this chapter.

(6)

When a stormwater management plan is submitted in sections, a generalized stormwater management plan for the entire project site shall be submitted in addition to the detailed stormwater management plan for the proposed section. This generalized plan shall demonstrate how the stormwater of the proposed section will relate to the entire development. If temporary facilities are required for construction of a section of such facilities, that shall be included in the submitted stormwater management plan.