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 and calculations shall be prepared and sealed by a qualified person. All stormwater designs, assumptions, methods and data must be presented in a manner acceptable to the Township Engineer.
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 the Municipal Subdivision and Land Development Ordinance.
E. 
All stormwater management materials shall be submitted in a format that is clear, concise, legible, neat and well organized.
F. 
All coordinates as depicted on the plan shall be based on the following:
(1) 
Horizontal datum shall be referenced to the Pennsylvania South Zone State Plane Coordinate System (NAD83).
(2) 
Vertical datum shall be referenced to NAVD 88.
G. 
All agricultural uses must provide an approved and proven to be implemented Agricultural Erosion and Sediment Control Plan or Conservation Plan and a Manure Management Plan.
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 a minimum 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.
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. 
Certificate for approval by the Township Board of Supervisors or designee. See Appendix 1, Certificate for Approval By East Hempfield Township Board of Supervisors or Designee.
E. 
Certificate, signature and seal of a qualified professional preparing the stormwater management site plan. See Appendix 1, Stormwater Management Designer Certification.
F. 
The following signature block for the landowner, acknowledging that the SWM facilities are fixtures that cannot be altered or removed without prior approval by the Township. "I_____, hereby represent that no person shall modify, remove, fill, landscape, or alter any stormwater management BMPs, facilities, areas, or structures without the written approval of East Hempfield Township."
G. 
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 on-site and off-site facilities.
H. 
A note informing the owner that the municipality shall have the right of entry for the purposes of inspecting all stormwater conveyance, treatment, or storage facilities.
I. 
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.
J. 
Existing features. The following features shall be shown on all stormwater management site plans and shall be shown on a separate sheet titled "Existing Conditions." No proposed features shall be included on this sheet.
(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) 
An overlay showing soil names and boundaries.
(4) 
Names of all adjacent landowners, property boundaries and locations and dimensions of easements as indicated by a boundary survey.
(5) 
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 inches diameter at breast height, woodlands, other environmentally sensitive areas and the total extent of the upstream area draining through the development site.
(6) 
All existing man-made features within 200 feet of the development site boundary.
K. 
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.
L. 
The location of all E&S control facilities.
M. 
Stormwater management facilities located within or affecting the floodplain of any watercourse shall comply with the requirements of the floodplain regulations provided in the Zoning Ordinance or any future ordinances regulating construction or development within areas of the Township subject to flooding.
N. 
The minimum habitable floor elevations for all structures that would be affected by a basin, other temporary impoundments, or open conveyance systems where ponding may occur shall be two feet above the 100-year water surface. If basement or underground facilities are proposed, detailed calculations addressing the effects of the stormwater ponding on the structure and waterproofing and/or floodproofing design information shall be provided for review and approval.
O. 
No outlet structure from a stormwater management facility, or swale, shall discharge directly onto a Township or state roadway.
P. 
A note indicating that all items needing inspection shall be coordinated by the owner and/or contractor. All requests for required inspections by the contractor are to be deemed as approved requests on behalf of the owner.
Q. 
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.
R. 
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 municipality must be provided.
S. 
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.
T. 
PCSM Title Blocks outlining each individual post-construction stormwater management BMP and/or facility per Appendix 8.
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 facilities are meant to function with each other to manage stormwater runoff.
C. 
A summary narrative stating the effect of the project (in terms of runoff volumes, water quality and peak flows) on adjacent properties and on any existing Township SWM facilities that may receive runoff from the development site.
D. 
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.
E. 
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.
F. 
Complete hydrologic, hydraulic, and structural computations for all SWM facilities.
G. 
Expected project time schedule.
H. 
Project inspection schedule for all BMPs.
I. 
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.
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 NPDES and E&S Plan, including all approvals, as required by 25 Pa. Code Chapter 102, shall be provided to the municipality prior to unconditional final 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 final plan approval.
D. 
For any activities that require a PennDOT highway occupancy permit, the permit(s) shall be part of the SWM site plan and must be obtained prior to unconditional SWM site plan approval. If PennDOT requires that the Township be the permittee for such drainage facilities, the applicant shall enter into an agreement, in recordable form, assuming all of the obligations which PennDOT may place upon the Township as permittee, including, but not limited to, long-term maintenance of any such facilities, compliance with all conditions contained in the permit, and indemnification of the Township for any costs or penalties which PennDOT may seek to impose on the Township. The Township shall have no obligation to make any applications to PennDOT.
E. 
An operation and maintenance (O&M) plan that addresses the requirements of this chapter. The O&M plan must be recorded in the Office of the Recorder of Deeds.
F. 
All SWM facilities must be located on a map and described in detail. The content of the map(s) and computations shall include, but not be limited to:
(1) 
All calculations, assumptions and criteria used for the design of the SWM facilities must be included for both predevelopment and post-development conditions. If multiple facilities are used in conjunction with each other, such as infiltration BMPs with vegetation-based management practices, a summary narrative shall be included which describes the construction sequence and how the facilities are meant to function with each other to manage stormwater runoff.
(2) 
When groundwater recharge methods such as seepage pits, beds or trenches are used, the locations of existing and proposed septic tank infiltration areas and wells must be shown. A minimum fifty-foot separation from on-lot disposal system (OLDS) infiltration areas is required. Infiltration rates shall be based upon perk and probe tests conducted at the site of the proposed facility.
(3) 
A description of how each permanent stormwater BMP will be operated and maintained, and the identity of the person(s) responsible for operations and maintenance.
Applicants are encouraged to schedule a pre-application meeting to review the overall stormwater management concept with Municipal staff/engineer. The pre-application meeting is not mandatory and shall not constitute formal filing of a plan with the municipality. The Township has the right to seek reimbursement for all pre-application professional services incurred. Topics discussed may include the following:
A. 
Available geological maps, plans and other available data.
B. 
Findings of the site analysis including identification of any environmentally sensitive areas, wellhead protection areas, riparian corridors, hydrologic soil groups, existing natural drainageways, karst features, areas conducive to infiltration to be utilized for volume control, etc.
C. 
Results of infiltration tests.
D. 
Applicable municipal Subdivision and Land Development and/or Zoning ordinance provisions.
E. 
The conceptual project layout, including proposed structural and nonstructural BMPs.
A. 
When a stormwater management site plan is required, the applicant shall submit the following to the municipality:
(1) 
One digital copy emailed to the Township and one digital copy emailed to the Township Engineer of the SWM site plan prepared in accordance with the requirements of Article IV of this chapter.
(2) 
One digital copy emailed to the Township and one digital copy emailed to the Township Engineer of all supplemental data.
(3) 
All applicable fees (in accordance with the municipality's current fee schedule).
B. 
The SWM site plan shall be submitted in a format that is clear, concise, legible, neat and well organized.
C. 
The applicant is responsible for submitting plans to any other agencies such as the Lancaster County Conservation District, PennDOT, DEP, etc. when permits from these agencies are required. Final approval shall be conditioned upon the applicant obtaining all necessary permits.
D. 
Incomplete submissions as determined by the governing body or its designee, shall be returned to the applicant within 15 days, along with a statement that the submission is incomplete, and stating the deficiencies found. Otherwise, the application shall be deemed accepted for filing as of the date of submission. Acceptance of the application shall not, however, constitute an approval of the plan or a waiver of any deficiencies or irregularities. The applicant may appeal the municipality's decision not to accept a particular application in accordance with § 260-57 of this chapter.
E. 
At its sole discretion and in accordance with this article, when a SWM site plan is found to be deficient, East Hempfield Township may either disapprove the submission and require a resubmission, or in the case of minor deficiencies, East Hempfield Township may accept submission of revisions.
A. 
When the regulated activity constitutes a subdivision or land development as defined in the East Hempfield Subdivision and Land Development Ordinance, the SWM site plan and subdivision/land development plan shall be processed concurrently according to the plan processing procedure outlined in the Subdivision and Land Development Ordinance.
B. 
When the regulated activity constitutes a small project the municipality shall review and take action on the small project application within 45 days of filing.
C. 
When the regulated activity does not constitute a subdivision or land development or small project the Municipal Engineer shall review the SWM site plan for conformance with the provisions of this chapter.
D. 
Within 15 days of the meeting at which the SWM site plan application is acted upon by the Board of Supervisors, written notice of the Board of Supervisor's action shall be sent to the following individuals:
(1) 
Landowner or his agent.
(2) 
Applicant.
(3) 
Firm that prepared the plan.
(4) 
Lancaster County Planning Commission.
(5) 
Lancaster County Conservation District.
E. 
If the Township disapproves the SWM site plan, the Township will state the reasons for the disapproval in writing. The Township also may approve the SWM site plan with conditions and, if so, shall provide the acceptable conditions for approval in writing. Such conditional approval shall be contingent upon the applicant's written acceptance of the conditions.
A. 
Revisions to a SWM site plan after submission but before Township action shall require a resubmission of the modified SWM site plan and be subject to review as specified in § 260-33 of this chapter.
B. 
For the purposes of review deadlines, each resubmission (after submission but before approval) shall constitute a new submission for the purposes of time limits as set forth in the MPC and this chapter.
C. 
Any substantial revisions to a SWM site plan after approval shall be submitted as a new plan to the Township, accompanied by the applicable review fee.
A. 
The plans should clearly indicate the need for a pre-construction meeting to be held prior to earth moving activities and include personnel from the following:
(1) 
East Hempfield Township.
(2) 
East Hempfield Township Water Authority.
(3) 
East Hempfield Township Engineer.
(4) 
The Lancaster County Conservation District.
(5) 
The equitable owner.
(6) 
The consulting firm that prepared the plan.
(7) 
The excavator.
(8) 
Anyone else deemed necessary.
B. 
Upon approval by the Township, Stormwater Management Plans must be recorded at the Lancaster County Recorder of Deeds office. Proof of recordation must be provided to the Township.
Approval of a SWM site plan shall be valid for a period not to exceed five years. This time period shall commence on the date that the Township approves the SWM site plan. If a certificate of completion required by this chapter has not been submitted within the specified time period, then the Township may consider the SWM site plan disapproved and may revoke any and all permits issued by the Township. SWM site plans that are considered disapproved by the Township may be resubmitted in accordance with § 260-32 of this chapter.
A. 
At the completion of the project, and as prerequisite for the release of the financial security, the applicant shall provide certification of completion from an engineer, landscape architect, surveyor or other qualified person verifying that all permanent SWM facilities have been constructed according to the plans and specifications and approved revisions thereto.
B. 
Upon receipt of the certificate of completion, and prior to release of the remaining financial security the Township shall conduct a final inspection to certify compliance with this chapter.
C. 
Upon final approval of the stormwater management plan, and prior to construction beginning, the applicant shall submit the plan for recordation in the Office of the Recorder of Deeds. No release of plans for recording will happen until a preconstruction meeting occurs. No construction can begin until the preconstruction meeting happens and the plans are recorded.
A. 
Upon completion of the plan improvements the applicant shall submit a record plan for recordation in the Office of the Recorder of Deeds. The record plan must show the final design specifications for all stormwater management facilities and be sealed by a registered professional engineer. The submission of a digital record plan to the Township is required, all coordinates as depicted on the plan shall be based on the PA South Zone State Plane Coordinate System (NAD83 for horizontal and NAVD88 for vertical). A .pdf and CAD file are required.
B. 
Concurrently with the recordation of the record plan, the applicant shall submit the SWM site plan for recordation in the Office of the Recorder of Deeds, unless the site plan has already been recorded.