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 subdivision or land development as hereinabove defined, the SWM site plan shall be submitted with and form an integral part of the plans required under Chapter 285, 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 sheet shall be numbered to show the relationship to the total number of sheets in the plan (e.g., "Sheet 1 of 5").
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 of Lancaster County.
F. 
The total development site boundary and size with distances marked to the nearest foot and bearings to the nearest degree.
[Amended 8-17-2022 by Ord. No. 298]
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 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 Township.
E. 
The following signature block for the Township:
Warwick Township SWM Site Plan Approval Certification
On _____________, 20_____, Warwick Township approved this project, and all conditions have been met. This approval includes the complete set of plans and information that are filed with the Township in File No. __________, based upon its conformity with the standards of the Warwick Township Stormwater Management Ordinance.
  (Vice) Chairman Signature
  (Assistant) Secretary Signature
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 Township 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 two thousand 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 disturbance, contours at intervals of one or two feet. 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 on-lot disposal systems and wells), sanitary sewers, and water lines 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 diameter at breast height, woodlands, other environmentally sensitive areas and the total extent of the upstream area draining through the development site.
(4) 
An overlay showing soil names and boundaries.
(5) 
All existing man-made features within 200 feet of the development site boundary.
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, buildings 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 § 270-31N.
(9) 
The maximum impervious surface coverage for which the SWM facilities have been designed for each lot on the SWM site plan.
K. 
The location of all E&S control facilities.
L. 
The plans should clearly indicate the need for a pre-construction meeting to be held prior to earth moving activities and recordation of the plan and include personnel from the following:
(1) 
Warwick Township;
(2) 
Warwick Township Municipal Authority;
(3) 
Warwick Township Engineer;
(4) 
The Lancaster County Conservation District;
(5) 
The equitable owner;
(6) 
The consulting firm that prepared the plan;
(7) 
Site operator (entity with day-to-day control of the site);
(8) 
The excavator;
(9) 
Anyone else deemed necessary.
M. 
A note indicating that all items needing inspection shall be coordinated by the owner and/or site operator (contractor). All requests for required inspections by the contractor are to be deemed as approved requests on behalf of the owner.
N. 
The actual existing and proposed lot coverage in square feet, in addition to the percentages, should clearly be shown on the data provided on the plan. This should correlate to the design information in the required Post Construction Stormwater Management Report to be used as a benchmark for all future impervious surface changes.
O. 
When applicable, notation should be added to the plan stating that "all impervious surfaces to be removed are to be removed full depth, including any stone base" so as to receive credit as a post development condition pervious surface in the stormwater management design. A statement, signed by the owner and any successor, acknowledging that the impervious surfaces to be removed full depth function as the SWM Facilities for this project and cannot be added back or altered or increased unless a revised plan is approved by the Township must be provided.
P. 
A note indicating construction site operators are required to control waste at the construction site that may cause adverse impacts to water quality. These wastes can include discarded building materials, concrete washout, chemicals, litter, and sanitary waste.
Q. 
PCSM Title Blocks outlining each individual post-construction stormwater management BMP and/or facility in accordance with Appendix 13.[1]
[1]
Editor's Note: Said appendix is included as an attachment to this chapter.
R. 
A note indicating that seeding should be applied in a manner that provides uniform coverage across the area and re-seeding to achieve uniform coverage may be required if uniform coverage is not achieved.
[Amended 8-17-2022 by Ord. No. 298]
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 of the materials to be used for structural SWM facilities. The narrative shall include a description of any treatment trains and how the SWM facilities are meant to function with each other to manage stormwater runoff.
C. 
Where an NPDES Construction Permit is required, a general description of the overall approach, techniques, controls, BMPs, and methods for managing nonstormwater generating activities (including, but not limited to concrete washouts and saw-cutting operations), waste (including, but not limited to solid waste and sanitary/septic waste), materials (including, but not limited to fertilizers/herbicides), and related inspection and maintenance activities must be recorded in a written plan that is maintained on site.
D. 
Verification of an approved and proven to be implemented agricultural Erosion and Sediment Control Plan or Conservation Plan and a Manure Management Plan or Nutrient Management Plan for agricultural uses.
E. 
Expected project time schedule.
F. 
Any other information deemed necessary or relevant by the Township or the Township Engineer for the purposes of protecting the public health, safety and welfare.
[Amended 8-17-2022 by Ord. No. 298]
A. 
In areas of carbonate geology, a detailed geologic evaluation prepared by a registered geotechnical professional 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 SWM facilities on adjacent karst features, and impacts of karst features on adjacent SWM facilities.
B. 
An E&S Plan, including all approvals, as required by Chapter 102, shall be provided to the Township prior to unconditional SWM site plan approval.
C. 
For any activities that require a DEP joint permit application and are regulated under Chapter 105 or Chapter 106, 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 plan approval.
D. 
An operation and maintenance (O&M) plan that addresses the requirements of § 270-63.
E. 
During construction, stormwater management infiltration systems shall have the subgrade tested and approved by a geotechnical professional, including performing infiltration testing. All documentation shall be submitted to the Township. If the stormwater facilities do not have an acceptable subgrade or infiltration rates, a corrective action plan shall be submitted for review and approval by the Township, Conservation District, and DEP.
F. 
For all proposed stormwater management systems designed for the infiltration of stormwater in areas of karst geology, a signed and sealed letter of concurrence shall be provided from the geotechnical professional supporting the proposed stormwater management systems.