A. 
The SWM site plan shall consist of a narrative and all applicable calculations, maps, plans, and supplemental information necessary to demonstrate compliance with this chapter.
B. 
All landowners of land included in the SWM site plan shall be required to execute all applications and final documents.
C. 
All SWM site plans shall be prepared by a qualified person.
D. 
Where the regulated activity constitutes a subdivision or land development plan, the SWM site plan shall be submitted with and form an integral part of the plans required under Chapter 240, Subdivision and Land Development.
A. 
The plan should be clearly and legibly drawn.
B. 
If the plan is prepared in two or more drawing sheets, a key map showing the location of the sheets and a match line shall be placed on each sheet.
C. 
Each plan sheet shall be numbered to show the relationship to the total number of sheets in the plan (e.g., Sheet 1 of 5). For projects which are also required to prepare and submit a land development plan in accordance with Chapter 240, Subdivision and Land Development, the SWM site plan may be incorporated into the land development plan.
D. 
Drawings or maps of the project area shall be drawn at one inch equals 50 feet or larger scale (i.e., one inch equals 40 feet, one inch equals 30 feet, etc.) and shall be submitted on twenty-four-inch-by-thirty-six-inch sheets.
E. 
SWM site plans shall be prepared in a form that meets the requirements for recording for the Office of the Recorder of Deeds for Lancaster County.
F. 
The total development site boundary and size with distances marked to the nearest foot and bearings to the nearest degree.
The following items shall be included in the SWM site plan:
A. 
The date of the SWM site plan and latest revision, graphic scale, written scale, and North arrow.
B. 
The name of the development, the name and address of the owner of the property, and the name of the individual or firm preparing the plan.
C. 
The file or project number assigned by the firm that prepared by the plan.
D. 
A statement, signed by the landowner, acknowledging the SWM facilities to be permanent fixtures that cannot be altered or removed unless a revised Plan is approved by the Borough.
E. 
A signature block for the Borough in accordance with Appendix 6.[1]
[1]
Editor's Note: Said appendix is on file in the Borough offices.
F. 
For SWM facilities located off-site:
(1) 
A note on the plan referencing a recorded stormwater operation and maintenance (O&M) agreement that indicates the location and responsibility for maintenance of the off-site facilities.
(2) 
All off-site SWM facilities shall meet the performance standards specified in this chapter.
G. 
A note informing the owner that the Borough shall have the right of entry for the purposes of inspecting all stormwater conveyance, treatment, or storage facilities.
H. 
A location map, drawn to a scale of a minimum of one inch equals 2,000 feet, relating the plan to municipal boundaries, at least two intersections of road centerline or other identifiable landmarks.
I. 
Existing features.
(1) 
In areas of proposed earth disturbance, contours at intervals of one foot. In areas of steep slopes (greater than 15%) and areas undisturbed, five-foot contour intervals may be used.
(2) 
The locations of all existing utilities (including sanitary sewers, water lines, on-lot disposal systems and wells) and associated easements.
(3) 
Physical features including flood hazard boundaries, wetlands, sinkholes, streams, lakes, ponds and other waterbodies, existing drainage courses, karst features, areas of native vegetation including trees greater than six inch in diameter at breast height, woodlands, other environmentally sensitive areas and the total extent of the upstream area draining through the development site.
(4) 
Soil names and boundaries.
(5) 
All existing man-made features within 200 feet of the development site boundary.
(6) 
All existing stormwater management facilities on the site and a note identifying any recorded stormwater management agreements affecting the subject property.
J. 
Proposed features.
(1) 
Changes to the land surface and vegetative cover, including final proposed contours at intervals of one or two feet in areas of disturbance. In areas of steep slopes (greater than 15%) and areas undisturbed, five-foot contour intervals may be used.
(2) 
Proposed structures, roads, paved areas, building and other impervious and semi-impervious areas.
(3) 
The location of any proposed on-lot disposal systems, replacement drainfield easements, and water supply wells.
(4) 
A note indicating existing and proposed land use(s).
(5) 
Plan and profile drawings of all proposed SWM facilities, including BMPs, drainage structures, pipes, open channels, and swales.
(6) 
Where pervious pavement is to be installed, pavement material and construction specifications shall be included.
(7) 
The location of all existing and proposed easements, including drainage easements, access easements and riparian corridor easements.
(8) 
A planting plan shall be provided for all vegetated BMPs in accordance with § 226-31N.
K. 
The location of all E&S control facilities.
A. 
General description of the development site, including a description of existing natural and hydrologic features and any environmentally sensitive areas.
B. 
General description of the overall SWM concept for the project, including a description of permanent SWM techniques, nonstructural BMPs to be employed and construction specifications for the materials to be used for structural SWM facilities. The narrative shall include a description of any treatment trains and how the facilities are meant to function with each other to manage stormwater runoff.
C. 
The effect of the project (in terms of runoff volumes, water quality and peak flows) on adjacent properties and on any existing municipal stormwater management facilities that may receive runoff from the development site.
D. 
Complete hydrologic, hydraulic, and structural computations for all SWM facilities.
E. 
Expected project time schedule.
F. 
The recorded subdivision plan shall include a note indicating the amount of impervious coverage on each lot, measured in square feet, for which the SWM facilities have been designed. For lots intended for development of a single residential dwelling unit, the maximum permitted impervious coverage used for the design shall be the maximum permitted impervious coverage for the zoning district in accordance with Chapter 270, Zoning.
G. 
A justification must be included in the SWM plan if BMPs other than green infrastructure methods and LID practices are proposed to achieve the volume, rate and water quality controls under this chapter. The municipality will not approve the SWM plan unless it determines that green infrastructure and LID practices are not practicable.
[Added 8-1-2022 by Ord. No. 3-22]
A. 
In areas of carbonate geology, a detailed geologic evaluation prepared by a registered professional geologist (PG) must be submitted as part of the SWM site plan. The report shall include, but not limited to the following:
(1) 
The location of the following karst features:
(a) 
Sinkholes.
(b) 
Closed depressions.
(c) 
Lineaments in carbonate areas.
(d) 
Fracture traces.
(e) 
Caverns.
(f) 
Intermittent lakes.
(g) 
Ephemeral disappearing streams.
(h) 
Bedrock pinnacles (surface or subsurface).
(2) 
A plan for remediation of any identified karst features.
(3) 
Impacts of stormwater management facilities on adjacent karst features, and impacts of karst features on adjacent stormwater management facilities.
B. 
An E&S Plan, including all approvals, as required by Chapter 102 shall be provided to the Borough prior to unconditional SWM site plan approval.
C. 
For any activities that required a DEP joint permit application and are regulated under Chapter 105, require a PennDOT highway occupancy permit, or require any other permit under applicable state or federal regulations, the permit(s) shall be part of the SWM site plan and must be obtained prior to unconditional SWM site plan approval.
D. 
An operation and maintenance (O&M) plan that addresses the requirements of § 226-63.