Borough of Forest Hills, PA
Allegheny County
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Table of Contents
Table of Contents

§ 23-101 General Provisions.

[Ord. 840, 3/17/1993, § 101]
1. 
Purpose. These regulations are adopted and implemented to achieve the following general purposes and objectives:
A. 
To manage and control stormwater runoff resulting from land alteration and disturbance activities in accordance with the watershed stormwater management plans adopted pursuant to the Pennsylvania Stormwater Management Act, 32 P.S. § 680.1 et seq.
B. 
To utilize and preserve the desirable existing natural drainage systems and to preserve the flood-carrying capacity of streams.
C. 
To encourage natural infiltration of rainfall to preserve groundwater supplies and stream flows.
D. 
To provide for adequate maintenance of all permanent stormwater management structures in the Borough.
2. 
Applicability. The provisions of this Part shall apply to all subdivisions and land development activity within the Forest Hills Borough.
3. 
Repealer. This Part shall repeal all other ordinances, or parts thereof, which are contrary to or conflict with the provisions of this Part to the extent necessary to give this Part full force and effect.
4. 
Severability. Should any section or provision of this Part be declared invalid by a court of competent jurisdiction, such decision shall not affect the validity of this Part as a whole or any other part hereof; the parts or sections remaining shall remain in effect as if the part of the section declared unconstitutional had never been a part of this Part.
5. 
Liability Disclaimer.
A. 
Neither the granting of any approval under the stormwater management provision of this Part, nor the compliance with the provision of this Part, or with any condition imposed by a Borough official hereunder, shall relieve any person from any responsibility for damage to persons or property resulting therefrom, or as otherwise imposed by law, nor impose any liability upon the borough for damages to persons or property.
B. 
The granting of a permit which includes any stormwater management facilities shall not constitute a representation, guarantee or warranty of any kind by the borough, or by an official or employee thereof, of the practicability or safety of any structure, use or other plan proposed, and shall create no liability upon or cause of action against such public body, official, or employee for any damage that may result pursuant thereto.

§ 23-102 Stormwater Management Performance Standards.

[Ord. 840, 3/17/1993, § 102; as amended by Ord. 989, 7/15/2009, §§ 2, 4, and 5]
1. 
Stormwater Management Performance Districts.
A. 
For purposes of stormwater management, the entire Forest Hills Borough is located in the Turtle Creek Watershed. Within the Borough, four subareas are identified.
B. 
The location and boundaries of the subareas are shown on the "Stormwater Management Ordinance District Map" (see Figure 1) which is hereby adopted as a part of this Part.
2. 
General Standards.
A. 
The following provisions shall be considered the overriding performance standards against which all proposed stormwater control measures shall be evaluated and shall apply throughout the Forest Hills Borough:
(1) 
Any landowner and any person engaged in the alteration or development of land which may affect stormwater runoff characteristics shall implement such measures as are reasonably necessary to prevent injury to health, safety or other property. Such measures shall include such actions as are required:
(a) 
To assure that the maximum rate of stormwater runoff is not greater after development than prior to development activities; or
(b) 
To manage the quantity, velocity, and direction of resulting stormwater runoff in a manner which otherwise adequately protects health and property from possible injury.
B. 
The stormwater management plan for the development site must consider all the stormwater runoff flowing over the site.
C. 
No person in the Borough shall allow, or cause to allow, stormwater discharges into the Borough's separate storm sewer system which are not composed entirely of stormwater, except as provided in Subsection 2C(1) below and any discharges allowed under a state or federal permit.
(1) 
The following discharges which do not significantly contribute to pollution to surface waters of the Commonwealth:
(a) 
Discharges from firefighting activities.
(b) 
Uncontaminated water from foundation or from footing drains.
(c) 
Potable water sources including dechlorinated water line and fire hydrant flushings.
(d) 
Flows from riparian habitats and wetlands.
(e) 
Irrigation drainage.
(f) 
Lawn watering.
(g) 
Pavement washwaters where spills or leaks of toxic or hazardous materials have not occurred (unless all spill material has been removed) and where detergents are not used.
(h) 
Routine external building washdown (which does not include detergents or other compounds).
(i) 
Air conditioning condensate.
(j) 
Water from individual residential car washing.
(k) 
Dechlorinated swimming pool discharges.
(l) 
Springs.
(m) 
Uncontaminated groundwater.
(n) 
Water from crawl space pumps.
(2) 
In the event that the Borough determines that any of the discharges identified in Subsection 2C(1) significantly contribute to pollution of waters of the Commonwealth or is so notified by Pennsylvania DEP, the Borough will notify the responsible person to cease the discharge.
(3) 
Upon notice provided by the Borough under Subsection 2C(2), the discharger will have a reasonable time, as determined by the Borough, to cease the discharge consistent with the degree of pollution caused by the discharge.
(4) 
Nothing in this section shall affect a discharger's responsibilities under state or federal law.
(5) 
The following connections are prohibited, except as provided in Subsection 2C(1) above:
(a) 
Any drain or conveyance, whether on the surface or subsurface, which allows any non-stormwater discharge including sewage, processed wastewater and wash water to enter the separate storm sewer system, and any connections to the storm drain system from indoor drains and sinks.
(b) 
Any drain or conveyance connected from a commercial or industrial land use to the separate storm sewer system which has not been documented in plans, maps, or equivalent records, and approved by the Borough.
3. 
Watershed Standards: Turtle Creek Stormwater Management District.
A. 
The stormwater performance standards contained in this Part are intended to implement the standards and criteria contained in the Turtle Creek Stormwater Management Plan, adopted and approved in accordance with the Pennsylvania Stormwater Management Act, 32 P.S. § 650.1 et seq. If there is any discrepancy between the provisions of this Part and the standards and criteria of the plan, or if the watershed plan is subsequently amended, then the standards/criteria of the current watershed plan shall govern.
B. 
Storm Frequencies. Stormwater management facilities on all development sites shall control the peak stormwater discharge for the two-, ten-, twenty-five- and one-hundred-year storm frequencies. The SCS 24 hour, Type II Rainfall Distribution shall be used for analyzing stormwater runoff for both pre- and post-development conditions. The twenty-four-hour total rainfall for these storm frequencies in, the watershed are:
Storm Frequency
Rainfall Depth
(inches)
2 year
2.50
10 year
3.61
25 year
4.31
100 year
5.71
(For additional information or data on other storm return periods, consult the "Rainfall Duration Frequency Tables for Pennsylvania," produced by PennDER, Office of Resource Management, Bureau of Dams and Waterways Management, Division of Stormwater Management, Harrisburg, February 1983.)
C. 
Calculation Methods.
(1) 
Development Sites. For the purpose of computing peak flow rates and runoff hydrographs from development sites, calculations shall be performed using one of the following: SCS publication, Technical Release (TR) 55 or 20, HEC I, or Penn State Runoff Model.
(2) 
Stormwater Collection/Conveyance Facilities. For the purposes of designing storm sewers, open swales and other stormwater runoff collection and conveyance facilities, any of the above listed calculation methods or the Rational Method may be used. Rainfall intensities for design should be obtained from the Pennsylvania Department of Transportation rainfall charts.
(3) 
Predevelopment Conditions. Predevelopment conditions shall be assumed to be those which exist on any site at the time of adoption of the Turtle Creek Stormwater Management Plan. Hydrologic conditions for all areas with pervious cover (i.e., fields, woods, lawn areas, pastures, cropland, etc.) shall be assumed to be in "good" condition, and the lowest recommended SCS runoff curve number (CN) shall be applied for all pervious land uses with the respective range for each land use and hydrologic soil group.
(4) 
Routing of hydrographs through detention/retention facilities for the purpose of design of those facilities shall be accomplished using the Modified Puls Method or recognized reservoir routing method subject to the approval of the Borough and Allegheny County.
D. 
Release Rate Percentage.
(1) 
Definition. The release rate percentage defines the percentage of the pre-development peak rate of runoff that can be discharged from an outfall on the site after development. It applies uniformly to all land development or alterations within a subarea. A listing of the release rate percentage by subarea appears in Figure 1 of this Part; the subareas are delineated on the "Stormwater Management Ordinance District Map."
(2) 
Procedure for Use.
(a) 
Identify the specific subarea in which the development site is located and obtain the subarea release rate percentage (refer to Figure 1).
(b) 
Compute the pre- and post-development runoff hydrographs for each stormwater outfall on the development site using an acceptable calculation method for two-, ten-, twenty-five-, and one-hundred-year storms. Apply no on-site detention for stormwater management but include any techniques to minimize impervious surfaces and/or increase the time of concentration for stormwater runoff flowing from the development site. If the post development peak runoff rate and the runoff volume are less than or equal to the predevelopment peak runoff rate and volume, then additional stormwater control shall not be required at that outfall. If the post development peak runoff rate and volume are greater than the predevelopment peak runoff rate and volume, then stormwater detention will be required and the capacity of the detention facility must be calculated in the manner prescribed below.
(c) 
Multiply the subarea release rate percentage by the predevelopment rate of runoff from the development site to determine the maximum allowable release rate from any detention facility for the four prescribed storm events.
(d) 
Design the outlet control facilities and size the volume of the detention facility using the calculated post development hydrograph and accepted hydrograph routing procedures in consideration of the maximum allowable release rate.
E. 
No Harm Evaluation.
(1) 
An applicant may seek to exceed the otherwise applicable subarea release rate percentage by performing the "no harm evaluation." This evaluation requires an independent engineering analysis to demonstrate that other reasonable options exist to prevent the occurrence of increase stormwater runoff discharge rates and/or velocities or that measures can be provided to prevent increased stormwater discharge rates and/or velocities from increasing flood elevations and accelerating erosion at all downstream points in the watershed.
(2) 
A "no harm evaluation" will be considered only in instances where the discharge to a stream channel from the development occurs through a properly sized and designed regional stormwater detention facility.
(3) 
The analysis for the no harm evaluation shall be submitted to the Borough Engineer and Allegheny County Planning Agency for review and approval.
(4) 
The no harm evaluation shall be prepared by a registered engineer who is experienced in hydrology and hydraulics. The no harm evaluation shall be completed using the following procedure:
(a) 
The Penn State Runoff Model (PSRM) is the hydrologic model required in this procedure. Use of this model would produce results from a no harm evaluation analysis that could be compared to the results of the watershed study.
1) 
Step 1. Develop the runoff hydrograph(s) for the design storms of the site and areas tributary to is using the PSRM and the Turtle Creek Watershed Stormwater Management Plan land use of the development for both pre-development and post-development conditions.
2) 
Step 2. Develop the runoff hydrograph(s) for the proposed site using the PSRM. If no management or controls are proposed, this would be equivalent to the runoff hydrograph under post-development conditions. If some management or controls are proposed, then the runoff hydrograph under post-development conditions would be modified to reflect their effect on the rate, volume and timing of discharges.
3) 
Step 3. Subtract the runoff hydrograph ordinates under predevelopment conditions (Step 1) from the discharge hydrograph ordinates (Step 2), maintaining the time scales of both hydrographs for one-to-one correspondence.
4) 
Step 4. Obtain a PSRM for existing conditions for the Turtle Creek Watershed from the County.
5) 
Step 5. Locate the subbasins) in which the proposed development is located and into which the discharge hydrograph enters. If more than one subbasin receives this incremental flow, divide the flow accordingly.
6) 
Step 6. Add the incremental increase computed in Step 3 to the runoff hydrograph for the subbasin(s) identified in Step 5.
7) 
Step 7. Route the adjusted runoff hydrograph through the Turtle Creek Watershed PSRM and note any increase in peak flows which would occur in downstream subbasins. If no increase is noted, then the "no-harm" has been demonstrated. If no increase is observed in peak flows, the increased potential for erosion and/or sedimentation in downstream channels resulting from any change in the flood hydrograph predicted by the model shall be evaluated. If no increased potential can be demonstrated by appropriate technical means, then the "No-Harm" exemption may be requested.
8) 
Step 8. If an increase in peak flow is observed in any of the downstream subbasins or increased potential for erosion and/or sedimentation is indicated, the "no-harm" exemption shall not be granted.

§ 23-103 Design Criteria for Stormwater Management Controls.

[Ord. 840, 3/17/1993, § 103; as amended by Ord. 989, 7/15/2009, § 3]
1. 
General Criteria.
A. 
Applicants may select runoff control techniques, or a combination of techniques, which are most suitable to control stormwater runoff from the development site. All controls must be subject to approval of the Borough Engineer. The Borough Engineer may request specific information on design and/or operating features of the proposed stormwater controls in order to determine their suitability and adequacy in terms of the standards of this Part.
B. 
The applicant shall consider the effect of the proposed stormwater management techniques on any special soil conditions or geological hazards which may exist on the development site. In the event such conditions are identified on the site, the Borough Engineer may require in-depth studies by a competent geotechnical engineer. Not all stormwater control methods may be advisable or allowable at a particular development site.
C. 
The stormwater management practices to be used in developing a stormwater management plan for a particular site shall be selected according to the following order of preference.
(1) 
Infiltration of run-off on-site.
(2) 
Flow attenuation by use of open vegetated swales and natural depression.
(3) 
Stormwater detention/retention structures.
D. 
Infiltration practices shall be used to the extent practicable to reduce volume increases and promote groundwater recharge. A combination of successive practices may be used to achieve the applicable minimum control requirements. Justification shall be provided by the applicant for rejecting each of the preferred practices based on actual site conditions.
E. 
No subdivision, land disturbance or laud development activities within the Borough shall commence until approval by the Borough of a plan which demonstrates compliance with this chapter and any applicable state water quality requirements (as defined below) after construction is complete.
F. 
Best management practices ("BMPs") must be designed to protect and maintain existing water uses (e.g., potable water supply, warm water fisheries, etc.) and maintain the level of water quality necessary to protect those uses in all streams, and to protect and maintain water quality in "Special Protection" streams, as required by Pennsylvania DEP's regulations at 25 Pa. Code, Chapter 93 (collectively referred to herein as "state water quality requirements").
G. 
To control post-construction stormwater impacts from regulated earth disturbance activities, state water quality requirements can be met by BMPs, including site design, which provide for management of post-construction stormwater infiltration and runoff, so that post-construction stormwater discharges do not degrade the physical, chemical or biological characteristics of the receiving waters. As described in the Pennsylvania DEP's Pennsylvania Stormwater Best Management Practices Manual (#363-0300-002, December 30, 2006, as it may be amended or superseded), this may be achieved by the following:
(1) 
Infiltration: replication of pre-construction stormwater infiltration conditions.
(2) 
Treatment: use of water quality treatment BMPs to ensure filtering out of chemical and physical pollutants from the stormwater runoff.
(3) 
Streambank and streambed protection: management of volume and rate of post-construction stormwater discharges to prevent physical degradation of receiving waters (e.g., from scouring and erosion).
H. 
Developers must ensure that BMPs are designed, implemented and maintained to control runoff after regulated subdivision, land disturbance or land development activities are completed. These requirements include the need to implement post-construction stormwater BMPs with assurance of long-term operations and maintenance of those BMPs.
I. 
Evidence of any necessary permits) from the Pennsylvania DEP and/or the Allegheny County Conservation District for subdivision, land disturbance or land development activities must be provided to the Borough. The issuance of an NPDES permit (or evidence of permit coverage under the statewide General NPDES Permit for Stormwater Discharges Associated with Construction Activity (PAG-2), as it may be amended or superseded) satisfies the requirements of Subsection 1I.
2. 
Criteria for Infiltration Systems.
A. 
Infiltration systems shall be sized and designed based upon local soil and ground water conditions.
B. 
Infiltration systems shall be greater than three feet deep and shall be located at least 10 feet from basement walls.
C. 
Infiltration systems shall not be used to handle runoff from commercial or industrial working or parking areas.
D. 
Infiltration systems may not receive runoff until the entire drainage area to the system has received final stabilization.
E. 
The stormwater infiltration facility design shall provide an overflow system with measures to provide a nonerosive velocity of flow along its length and at the out fall.
3. 
Criteria for Stormwater Detention Facilities.
A. 
If detention facilities are utilized for the development site, the facilities shall be designed such that post-development peak runoff rates from the developed site are controlled to those rates defined by the subarea release rate percentage for the two-, ten-, twenty-five-, and one-hundred-year storm frequencies.
B. 
All detention facilities shall be equipped with outlet structures to provide discharge control for the four designated storm frequencies. Provisions shall also be made to safely pass, at minimum, the post-development one-hundred-year storm runoff without breaching or otherwise damaging (i.e., impairing the continued function of) the facilities.
C. 
Shared storage facilities, which provide detention of runoff for more than one development site within a single subarea may be considered and are encouraged. Such facilities shall meet the criteria contained in this Part. In addition, runoff from the development sites involved shall be conveyed to the facility in a manner that avoids adverse impacts (such as flooding or erosion) to channels and properties located between the development site and the shared storage facilities.
D. 
Where detention facilities will be utilized, multiple use facilities, such as wetlands, lakes, ballfields or similar recreational/open space uses are encouraged wherever feasible, subject to the approval of the borough and the Pennsylvania Department of Environmental Protection, 25 Pa. Code, Chapter 105 regulations.
E. 
Other considerations which should be incorporated into the design of the detention facilities include:
(1) 
Inflow and outflow structures shall be designed and installed to prevent erosion and bottoms of impoundment type structures should be protected from soil erosion.
(2) 
Control and removal of debris both in the storage structure and in all inlet or outlet devices shall be a design consideration.
(3) 
Inflow and outflow structures, pumping stations, and other structures shall be designed and protected to minimize safety hazards.
(4) 
The water depth at the perimeter of a storage pond should be limited to that which is safe for children. This is especially necessary if bank slopes are steep or if ponds are full and recirculating in dry periods. Restriction of access (fence, wall, etc.) may be necessary depending on the location of the facility.
(5) 
Side slope of storage ponds shall not exceed a ratio of 2 1/2 to 1 horizontal to vertical dimension.
(6) 
Landscaping shall be provided for the facility which harmonizes with the surrounding area.
(7) 
Facility shall be located to facilitate maintenance, considering the frequency and type of equipment that will be required.
4. 
Criteria for Collection/Conveyance facilities.
A. 
All stormwater runoff collection or conveyance facilities, whether storm sewers or other open or closed channel, shall be designed in accordance with the following basic standards:
(1) 
All sites shall be graded to provide drainage away from and around the structure in order to prevent any potential flooding damage.
(2) 
Lots located on the high side of streets shall extend roof and french drains to the curb line storm sewer (if applicable). Low side lots shall extend roof and french drains to a stormwater collection and/or conveyance control system or natural watercourse in accordance with the approved stormwater management plan for the development site.
(3) 
Collection/conveyance facilities should not be installed parallel and close to the top or bottom of a major embankment to avoid the possibility of failing or causing the embankment to fail.
(4) 
All collection and/or conveyance facilities shall be designed to convey the twenty-five-year storm peak flow rate from the contributing drainage area and to carry it to the nearest suitable outlet such as a stormwater control facility, curbed street, storm sewer or natural watercourse.
(5) 
Where drainage swales or open channels are used, they shall be suitably lined to prevent erosion and designed to avoid excessive velocities.
B. 
Wherever storm sewers are proposed to be utilized, they shall comply with the following criteria:
(1) 
Where practical, designed to traverse under seeded and planted areas. If constructed within 10 feet of road paving, walks or other surfaced areas, drains shall have a narrow trench and maximum compaction of backfill to prevent settlement of the superimposed surface or development.
(2) 
Preferably installed after excavating and filling in the area to be traversed is completed, unless the drain is installed in the original ground with a minimum of three feet cover and/or adequate protection during the fill construction.
(3) 
Designed: (a) with cradle when traversing fill areas of indeterminate stability, (b) with anchors when gradient exceeds 20%, and (c) with encasement or special backfill requirements when traversing under a paved area.
(4) 
Designed to adequately handle the anticipated stormwater flow and be economical to construct and maintain. The minimum pipe size shall be 15 inches in diameter.
(5) 
Drain pipe, trenching, bedding and backfilling requirements shall conform to the requirements of the borough and/or applicable PennDOT Specifications, Form 408.
(6) 
All corrugated metal pipe shall be polymer coated, and with asbestos bonding and paved inverts where prone to erode. Pipe within a borough right-of-way shall be reinforced concrete pipe with a minimum diameter of 15 inches.
(7) 
Storm inlets and structures shall be designed to be adequate, safe, self-cleaning and unobtrusive and consistent with Borough standards.
(8) 
Appropriate grates shall be designed for all catch basins, stormwater inlets and other entrance appurtenances.
(9) 
Manholes shall be designed so that the top shall be at finished grade and sloped to conform to the slope of the finished grade. Top castings of structures located in roads or parking areas shall be machined or installed to preclude "rattling."
(10) 
Where proposed sewer connects with an existing storm sewer system, the applicant shall demonstrate that sufficient capacity exists in the downstream system to handle the additional flow.
(11) 
Storm sewer outfalls shall be equipped with energy dissipation devices to prevent erosion and conform with applicable requirements of the Pennsylvania DEP for stream encroachments (Chapter 105, 25 Pa. Code of Pennsylvania DEP Rules and Regulations).

§ 23-104 Erosion and Sedimentation Controls.

[Ord. 840, 3/17/1993, § 104]
1. 
Erosion/sedimentation plan shall be provided in accordance with the Pennsylvania erosion/sedimentation regulations (25 Pa. Code, Chapter 102) and the standards and guidelines of the County Conservation District.
2. 
Proposed erosion/sedimentation measures shall be submitted with the stormwater management plan as part of the preliminary and final applications.
3. 
Erosion/sedimentation measures shall be constructed in accordance with the Forest Hills Borough Grading and Excavation Ordinance [Chapter 9].

§ 23-105 Maintenance of Stormwater Management Controls.

[Ord. 840, 3/17/1993, § 105]
1. 
Maintenance Responsibilities.
A. 
The stormwater management plan for the development site shall contain an operation and maintenance plan prepared by the developer and approved by the Borough Engineer. The operation and maintenance plan shall outline required routine maintenance actions and schedules necessary to insure proper operation of the facility(ies).
B. 
The stormwater management plan for the development site shall establish responsibilities for the continuing operation and maintenance of all proposed stormwater control facilities, consistent with the following principals:
(1) 
If a development consists of structures or lots which are to be separately owned and in which streets, sewers, and other public improvements are to be dedicated to the Borough, stormwater control facilities shall also be dedicated to and maintained by the Borough.
(2) 
If a development site is to be maintained in single ownership or if sewers and other public improvements are to be privately owned and maintained, then the ownership and maintenance of stormwater control facilities shall be the responsibility of the owner or private management entity.
C. 
The Borough Council, upon recommendation of the Borough Engineer, shall make the final determination on the continuing maintenance responsibilities prior to final approval of the stormwater management plan. The Borough Council reserves the right to accept the ownership and operating responsibility for any or all of the stormwater management controls.
2. 
Maintenance Agreement for Privately Owned Stormwater Facilities.
A. 
Prior to final approval of the site's stormwater management plan the property owner shall sign and record a maintenance agreement covering all stormwater control facilities which are to be privately owned. The agreement shall stipulate that:
(1) 
The owner shall maintain all facilities in accordance with the approved maintenance schedule and shall keep all facilities in a safe and attractive manner.
(2) 
The owner shall convey to the borough easements and/or rights-of-way to assure access for periodic inspections by the Borough and maintenance if required.
(3) 
The owner shall keep on file with the borough the name, address and telephone number of the person or company responsible for maintenance activities; in the event of a change, new information will be submitted to the borough within 10 days of the change.
(4) 
If the owner fails to maintain the stormwater control facilities following due notice by the Borough to correct the problem(s), the Borough may perform the necessary maintenance work or corrective work and the owner shall reimburse the borough for all costs.
B. 
Other items may be included in the agreement where determined necessary to guarantee the satisfactory maintenance of all facilities. The maintenance agreement shall be subject to the review and approval of the Borough Solicitor and Borough Council.
3. 
Borough Stormwater Maintenance Fund.
A. 
Persons installing stormwater storage facilities shall be required to pay a specified amount to the Borough stormwater maintenance fund to help defray costs of periodic inspections and maintenance expenses. The amount of the deposit shall be determined as follows:
(1) 
If the storage facility is to be privately owned and maintained, the deposit shall cover the cost of periodic inspection performed by the borough for a period of 10 years, as estimated by the Borough Engineer. After that period of time, inspections will be performed at the expense of the borough.
(2) 
If the storage facility is to be owned and maintained by the borough, the deposit shall cover the estimated costs for maintenance and inspections for 10 years. The Borough Engineer will establish the estimated costs utilizing information submitted by the applicant.
(3) 
The amount of the deposit to the fund shall be converted to present worth of the annual series values. The Borough Engineer shall determine the present worth equivalents which shall be subject to the approval of the Borough Council.
B. 
If a storage facility is proposed that also serves as a recreation facility (e.g., ballfield, lake), the Borough may reduce or waive the amount of the maintenance fund deposit based upon the value of the land for public recreation purposes.
C. 
If at some future time a storage facility (whether publicly or privately owned) is eliminated due to the installation of storm sewers or other storage facility, the unused portion of the maintenance fund deposit will be applied to the cost of abandoning the facility and connecting to the storm sewer system or other facility. Any amount of the deposit remaining after the costs of abandonment are paid will be returned to the depositor.

§ 23-106 Stormwater Plan Requirements.

[Ord. 840, 3/17/1993, § 106]
1. 
General Requirements.
A. 
No final subdivision/land development plan shall be approved, no permit authorizing construction issued, or an earthmoving or land disturbance activity initiated until the final stormwater management plan for the development site is approved in accordance with the provisions of this Part. Plans shall include a list of all other permits required.
2. 
Exemptions for Small Developments.
A. 
At the time of application, the Borough shall determine if the subdivision/land development qualifies as a "small development" and, therefore, is eligible for a simplified stormwater plan submission. For the purpose of this Part a small development is any subdivision or land development which results (or will result when fully constructed) in the creation of 5,000 or less square feet of impervious area and one acre or less of any land cover changes.
B. 
Application for small developments shall include a plan which describes the type and location of proposed on-site stormwater management techniques or the proposed connection to an existing storm sewer system. The plan should show accurately site boundaries, two-foot interval contours, locations of watershed and/or subarea boundaries on the site (if applicable) and any watercourses, floodplain, or existing drainage facilities or structures located on the site. Contingent upon the approval of the Borough Engineer, alternative runoff computational techniques such as the rational method may be used where applicable. The Borough reserves the right to require that the plan be prepared by a registered professional engineer, surveyor, or landscape architect.
C. 
The Borough Engineer shall review and approve the proposed provisions for stormwater management in accordance with the standards and requirements of this Part including state and county standards and requirements.
3. 
Stormwater Plan Contents.
A. 
General Format. The stormwater plan shall be drawn to a scale of not less that one inch equals 200 feet. All sheets shall contain a title block with: Name and address of applicant and engineer, scale, north arrow, legend, and date of preparation.
B. 
Existing and Proposed Features. The plan shall show the following:
(1) 
Watershed Location. Provide a key map showing the location of the development site within the watershed and watershed subarea(s). On all site drawings, show the boundaries of the watershed and subarea(s) as they are located on the development site and identify watershed names(s) and subarea numbers (s).
(2) 
Floodplain Boundaries. Identify one-hundred-year floodplain on the development site (as appropriate) based on the borough Flood Insurance Study maps.
(3) 
Natural Features. Show all bodies of water (natural or artificial), watercourses (permanent and intermittent), swales, wetlands and other natural drainage courses on the development site, or which will be affected by runoff from the development.
(4) 
Soils. Provide an overlay showing soil types and boundaries within the development site (consult County, SCS, and U.S. Geological Survey for information).
(5) 
Contours. Show existing and final contours at intervals of two feet, in areas with slopes greater than 15%, five-foot contour intervals may be used.
(6) 
Land Cover. Show existing and final land cover classifications as necessary to support and illustrate the runoff calculations performed.
(7) 
Drainage Area Delineations. Show the boundaries of the drainage areas employed in the runoff calculations performed.
(8) 
Stormwater Management Controls. Show any existing stormwater management or drainage controls and/or structures, such as sanitary and storm sewers, swales, culverts, etc., which are located off-site but will be affected by runoff from the development.
C. 
Professional Certification. The stormwater management plan (including all calculations) must be prepared and sealed by a registered professional engineer, surveyor or landscape architect with training and expertise in hydrology and hydraulics. Documentation of qualifications may be required by the Borough.
D. 
Runoff Calculations. Calculations for determining pre and post-development discharge rates and for designing proposed stormwater control facilities must be submitted with the stormwater management plan. All calculations shall be prepared using the methods and data prescribed by § 23-102 of this Part.
E. 
Stormwater Controls. All proposed stormwater runoff control measures must be shown on the plan including methods for collecting, conveying, and storing stormwater runoff on site which are to be used both during and after construction. Erosion and sedimentation controls shall be shown in accordance with applicable borough and County Conservation District requirements. The plan shall provide information on the exact type, location, sizing, design, and construction of all proposed facilities and relationship to the existing watershed drainage system.
(1) 
If the development is to be constructed in stages, the applicant must demonstrate that stormwater facilities will be installed to manage stormwater runoff safely during each stage of development.
(2) 
A schedule for the installation of all temporary and permanent stormwater control measures and devices shall be submitted.
(3) 
If appropriate, a justification should be submitted as to why any preferred stormwater management techniques, as listed in § 23-103, are not proposed for use.
F. 
Easements, Right-of-Way, Deed Restriction. All existing and proposed easements and rights-of-way for drainage and/or access to stormwater control facilities shall be shown and the proposed owner identified. Show any areas subject to special deed restrictions relative to or affecting stormwater management on the development site.
G. 
Other Permits/Approvals. A list of any permits/approvals relative to stormwater management that will be required from other governmental agencies (e.g., an obstructions permit from Pennsylvania DEP) and anticipated dates of submission/receipt should be included with the stormwater plan submission. Copies of permit applications may be requested by the borough where they may be helpful for the plan review.
H. 
Maintenance Program. The application shall contain a proposed maintenance plan for all stormwater control facilities in accordance with the following:
(1) 
Identify the proposed ownership entity (e.g., Borough, property owner, private corporation, homeowner's association, or other entity).
(2) 
Include a maintenance program for all facilities, outlining the type of maintenance activities, probable frequencies, personnel and equipment requirements and estimated annual maintenance costs.
(3) 
Identify method of financing continuing operation and maintenance if the facility is to be owned by other than the Borough or governmental agency.
(4) 
Submit any legal agreements required to implement the maintenance program and copies of the maintenance agreement as required by this Part.
I. 
Financial Guarantees. Submit financial guarantees in accordance with the provisions of this Part.

§ 23-107 Plan Review Procedure.

[Ord. 840, 3/17/1993, § 107; as amended by Ord. 989, 7/15/2009, § 6]
1. 
Pre-Application Phase.
A. 
Before submitting the stormwater plan, applicants should consult with the Borough, Allegheny County Planning Agency and Allegheny County Conservation District on the requirements for safely managing stormwater runoff from the development site in a manner consistent with the Borough ordinances and applicable watershed stormwater management plan. These agencies may also be helpful in providing necessary data for the stormwater management plan.
B. 
Applicants are encouraged to submit a sketch plan with a narrative description of the proposed stormwater management controls for general guidance and discussion with the borough and other agencies.
C. 
The pre-application phase is not mandatory; any review comments provided by the Borough or other agencies are advisory only and do not constitute any legally binding action on the part of the Borough or any County agency.
2. 
Stormwater Plan Reviews.
A. 
Submission of Plans. Stormwater plan applications shall be submitted with the preliminary and final subdivision/land development applications.
B. 
Notification of Affected Municipalities or Boroughs. The Borough shall notify municipalities or boroughs upstream and downstream of the development site, which may be affected by the stormwater runoff and proposed controls of the site. Copies of the plans will be made available to the municipalities or boroughs upon request. Comments received from any affected municipality or borough will be considered by the Borough Engineer and Allegheny County agencies in their reviews.
C. 
County Planning Review.
(1) 
A copy of the stormwater plan, along with all runoff calculations, shall be forwarded to the Allegheny County Planning Agency. A report of the findings will be returned to the Borough within 30 days.
(2) 
If the Planning Department review identifies that the plan fails to comply with the watershed standards and criteria or that a possibility exists for harmful downstream impacts from the development site, the applicant will be advised so that the necessary modifications can be made to the stormwater management controls for the development site. The Borough Engineer shall not approve the development site's stormwater management plan until modifications are made and the plan receives a positive review from the County Planning Department.
D. 
Borough Engineer's Review. The Borough Engineer shall approve or disapprove the stormwater management plan based on the requirements of this Part, the standards and criteria of the watershed plan and good engineering practice. The engineer shall submit a written report, along with supporting documentation, stating their reasons for approval or disapproval.
E. 
Status of Engineer's Determination. The approval/disapproval of the site's stormwater management plan by the Borough Engineer shall be considered final. The Borough Council shall not reverse the Engineer's determination by approving or disapproving the site's stormwater management plan or any specific control measure in contradiction to the Engineer's action. The Borough Council may request modifications or alternative approaches to the stormwater management controls, provided these are agreed to by the Borough Engineer and the applicant's engineer.
F. 
Permits Required from Other Governmental Agencies. Where the proposed development requires an obstruction permit from the Pennsylvania DEP or an erosion/sedimentation permit from the County Conservation District, then final stormwater management plan approval shall be conditional upon receipt of such permits. However, no building permit shall be issued, nor construction started, until the permits are received and copies filed with the borough.

§ 23-108 Status of the Stormwater Plan After Approval.

[Ord. 840, 3/17/1993, § 108]
1. 
Upon final stormwater plan approval and receipt of all necessary permits, the applicant may commence to install or implement the approved stormwater management controls.
2. 
If site development or building construction does not begin within two years of the date of final approval of the stormwater management plan, then before doing so, the applicant shall resubmit the stormwater management plan to verify that no condition has changed within the watershed that would affect the feasibility or effectiveness of the previously approved stormwater management controls. Further, if for any reason development activities are suspended for two years or more, then the same requirement for resubmission of the stormwater management plan shall apply.

§ 23-109 Stormwater Plan Modifications.

[Ord. 840, 3/17/1993, § 109]
1. 
If the request for a plan modification is initiated before construction begins, the stormwater plan must be resubmitted and reviewed according to the procedures contained in § 23-107 above.
2. 
If the request for a plan modification is initiated after construction is underway, the Borough Engineer shall have the authority to approve or disapprove the modification based on field inspection provided: (A) the requested changes in stormwater controls do not result in any modifications of other approved Borough land use/development requirements (e.g., building setbacks, yard, etc.) and (B) the performance standards in § 23-102 are met. Notification of the Engineer's action shall be sent to the Borough Council which may issue a stay of the plan modification within five days and require the permittee to resubmit the plan modification for full stormwater plan review in accordance with § 23-107 above.

§ 23-110 Inspection of Stormwater Management Controls.

[Ord. 840, 3/17/1993, § 110]
1. 
The Borough Engineer or a designated representative shall inspect the construction of the temporary and permanent stormwater management system for the development site. The permittee shall notify the Engineer 48 hours in advance of the completion of the following key development phases:
A. 
At the completion of preliminary site preparation, including stripping of vegetation, stockpiling of topsoil and construction of temporary stormwater management and erosion control facilities.
B. 
At the completion of rough grading but prior to placing topsoil, permanent drainage or other site development improvements and ground covers.
C. 
During construction of the permanent stormwater facilities at such times as specified by the Borough Engineer.
D. 
Completion of permanent stormwater management facilities including established ground covers and plantings.
E. 
Completion of final grading, vegetative control measures or other site restoration work done in accordance with the approved plan and permit.
2. 
No work shall commence on any subsequent phase until the preceding one has been inspected and approved in writing. If there are deficiencies in any phase, the Borough Engineer shall issue a written description of the required corrections and stipulate the time by which they must be made.
3. 
If during construction, the contractor or permittee identifies any site condition, such as subsurface soil conditions, alterations in surface or subsurface drainage which could affect the feasibility of the approved stormwater facilities, he/she shall notify the Borough Engineer within 24 hours of the discovery of such condition and request a field inspection. The Borough Engineer shall determine if the condition requires a stormwater plan modification.
4. 
In case where stormwater facilities are to be installed in areas of landslide-prone soils or other special site conditions exist, the Borough may require special precautions such as soil tests and core boring, full-time inspectors and/or similar measures. All costs of any such measures shall be borne by the permittee.

§ 23-111 Financial Guarantees and Dedication of Public Improvements.

[Ord. 840, 3/17/1993, § 111]
1. 
Guarantee of Completion. A completion guarantee in the form of a bond, cash deposit, certified check or the negotiable securities acceptable to the Borough, shall be filed. The guarantee shall cover all streets, sanitary sewers, stormwater management facilities, water systems, fire hydrants,. sidewalks and other required improvements; it shall be in the amount and form prescribed by § 510 of the Municipalities Planning Code, 53 P.S. § 10510.
2. 
Release of Completion Guarantee. The completion guarantee shall be returned or released upon written certification by the Borough Engineer or a designated agent that improvements and facilities have been installed and completed in accordance with the approved plan and specifications. The procedures for requesting and obtaining a release of the completion guarantee shall be in a manner prescribed by § 510 of the Municipalities Planning Code, 53 P.S. § 10510.
3. 
Default of Completion Guarantee. If improvements are not installed in accordance with the approved final plan, the Borough Council may enforce any corporate bond or other security by appropriate legal and equitable remedies. If proceeds of such bond or other security are insufficient to pay the cost of installing or making repairs or corrections to all the improvements covered by said security, the Borough Council may at its option install part of such improvements in all or part of the development and may institute appropriate legal or equitable action to recover the monies necessary to complete the remainder of the improvements. All proceeds, whether resulting from the security or from any legal or equitable action brought against the developer, or both, shall be used solely for the installation of the improvements covered by such security and not for any other Borough purpose.
4. 
Dedication of Public Improvements.
A. 
When streets, sanitary sewers, stormwater management facilities, water lines or other required improvements in the development have been completed in accordance with the final approved plan, such improvements shall be deemed private until such time as they have been offered for dedication to the borough and accepted by separate ordinance or resolution or until they have been condemned for use as a public facility.
B. 
Prior to acceptance of any improvements or facilities, the Borough Engineer shall inspect it to ensure that it is constructed in accordance with the approved plan and is functioning properly. In the case of any stormwater control facility, it must be free of sediment and debris.
C. 
The owner shall submit as-built plans for all facilities proposed for dedication.
5. 
Maintenance Guarantee. Prior to acceptance of any improvements or facilities, the applicant shall provide a financial security to secure the structural integrity and functioning of the improvements. The security shall: (A) be in the form of a bond, cash, certified check or other negotiable securities acceptable to the borough, (B) be for a term of 18 months, and (C) be in an amount equal to 15% of the actual cost of the improvements and facilities so dedicated.

§ 23-112 Fee Schedule.

[Ord. 840, 3/17/1993, § 112]
The Forest Hills Borough may adopt by resolution from time to time a reasonable schedule of fees to cover the cost of plan reviews, inspections, and other activities necessary to administer the provisions of this Part. All fees shall be set in accordance with the applicable provisions of the Municipalities Planning Code, 53 P.S. § 10101 et seq., and any dispute over the fee amount shall be resolved in the manner prescribed by the Planning Code.

§ 23-113 Enforcement Procedures and Remedies.

[Ord. 840, 3/17/1993, § 113]
1. 
Right of Entry. Upon presentation of proper credentials, duly authorized representatives of the borough may enter at reasonable times upon any property to investigate or ascertain the condition of the subject property in regard to an aspect regulated by this Part.
2. 
Notification. In the event that the applicant, developer, owner, or his/her agent fails to comply with the requirements of this Part or fails to conform to the requirements of any permit, a written notice of violation shall be issued. Such notification shall set forth the nature of the violation(s) and establish a time limit for correction of the violation(s). Upon failure to comply within the time specified, unless otherwise extended by the borough, the applicant, developer, owner or his/her agent shall be subject to the enforcement remedies of this Part.
3. 
Preventative Remedies.
A. 
In addition to other remedies, the Borough may institute and maintain appropriate actions by law or in equity to restrain, correct or abate a violation, to prevent unlawful construction, to recover damages and to prevent illegal occupancy of a building or premises.
B. 
In accordance with § 515.1 of the Municipalities Planning Code, 53 P.S. § 10515.1 the Borough may refuse to issue any permit or grant approval to further improve or develop any property which has been developed in violation of this Part.
4. 
Enforcement Remedies.
A. 
Any person, who has violated or knowingly permitted the violation of the provisions of this Part shall, upon being found liable therefore in a civil enforcement proceeding commenced by the Borough, pay a fine of not less than $50 and not more than $500 plus court costs, including reasonable attorney fees incurred by the Borough. No judgment shall commence or be imposed, levied, or be payable until the date of the determination of a violation by the magisterial district judge.
B. 
If the defendant neither pays nor timely appeals the judgment, the borough may enforce the judgment pursuant to applicable rules of civil procedure.
C. 
Each day that a violation continues shall constitute a separate violation unless the magisterial district judge further determines that there was a good faith basis for the person violating the ordinance to have believed that there was no such violation. In such case there shall be deemed to have been only one such violation until the fifth day following the date of the magisterial district judge's determination of a violation; thereafter, each day that a violation continues shall constitute a separate violation.
D. 
All judgments, costs, and reasonable attorney fees collected for the violation of this Part shall be paid over to the borough.
E. 
The Court of Common Pleas, upon petition, may grant an order of stay, upon cause shown, tolling for per diem fine pending a final adjudication of the violation and judgment.
F. 
Nothing contained in this Part shall be construed or interpreted to grant to any person or entity other than the Borough the right to commence any action for enforcement pursuant to this Part.
5. 
Additional Remedies. In addition to the above remedies, the Borough may also seek remedies and penalties under applicable Pennsylvania, statues, or regulations adopted pursuant thereto including, but not limited to, the Stormwater Management Act, (32 P.S. §§ 693.1 — 693.27) and the Erosion and Sedimentation Regulations, 25 Pa. Code, Chapter 102. Any activity conducted in violation of this Part or any Pennsylvania approved watershed stormwater management plan may be declared a public nuisance by the Borough and abatable as such.

§ 23-114 Appeals.

[Ord. 840, 3/17/1993, § 114]
1. 
Any person aggrieved by any action or decision of the Borough Engineer concerning the administration of the provisions of this Part may appeal to the Forest Hills Borough Council. Such appeal must be filed, in writing, within 30 days after the decision or action of the Borough Engineer.
2. 
Upon receipt of such appeal, the Borough Council shall set a time and place, within not less than 10 nor more than 30 days, for the purpose of considering the appeal. Notice of the time and place at which the appeal will be considered shall be given to all parties.
3. 
Any person aggrieved by any decision of the Borough Council may seek relief therefrom by appeal to court, as provided by the laws of the Commonwealth.

§ 23-115 Definitions.

[Ord. 840, 3/17/1993, § 115]
ACT
The Stormwater Management Act, Act of October 4, 1978, P.L. 864 No. 167; 32 P.S. §§ 680.1 — 680.17, as amended by Act of May 24, 1984, No. 63.
APPLICANT
A landowner or developer who has filed an application for development including his/her heirs, successors and assigns.
BOROUGH
Forest Hills Borough
CHANNEL
A perceptible natural or artificial waterway which periodically or continuously contains moving water or which forms a connecting link between two bodies or water. It has a definite bed and banks which confine the water.
CONSERVATION DISTRICT
The Allegheny County Conservation District.
CULVERT
A closed conduit for the free passage of surface drainage under a highway, railroad, canal or other embankment.
DESIGN CRITERIA
(A) engineering guidelines specifying construction details and materials. (B) objectives, results, or limits which must be met by a facility, structure, or process in performance of its intended functions.
DESIGN STORM
(See "storm frequency.")
DESIGNATED WATERSHED
An area delineated by the Pennsylvania DEP and approved by the Environmental Quality Board for which counties are required to develop watershed stormwater management plans.
DETENTION POND
A pond or reservoir, usually small, constructed to impound or retard surface runoff temporarily.
DEVELOPER
The person, persons, or any corporation, partnership, association, or other entity or any responsible person therein or agent therefor that undertakes the activities associated with changes in land use. The term, "developer" is intended to include but not necessarily be limited to the term "subdivide," "owner," and "builder" even though the individuals involved in successive stages of a project may vary.
DEVELOPMENT
Any activity, construction, alteration, change in land use or practice that affects stormwater runoff characteristics.
DISCHARGE
The flow or rate of flow from a canal, conduit, channel or other hydraulic structure.
DRAINAGE
In general, the removal of surface water from a given area. Commonly applied to surface water and ground water.
DRAINAGE AREA
(A) the area of a drainage basin or watershed, expressed in acres, square miles, or other unit of area. Also called catchment area, watershed, or river basin. (B) The area served by a sewer system receiving storm and surface water, or by a watercourse.
ENCROACHMENT
Any structure or activity which in any manner changes, expands or diminishes, the course, current or cross section of any watercourse, floodway, or body of water.
EROSION
Wearing away of the lands by running water, winds, and waves.
EROSION CONTROL
The application of measures to reduce erosion of land surfaces.
GROUND COVER
Materials covering the ground surface.
GROUND WATER
Subsurface water occupying the saturation zone, from which wells and springs are fed.
GROUND WATER RECHARGE
Replenishment of ground water naturally by precipitation or runoff or artificially by spreading or injection.
IMPERVIOUS
Not allowing or allowing only with great difficulty the movement of water; impermeable.
INFILTRATION
(A) the flow or movement of water through the interstices or pores of a soil or other porous medium. (B) The absorption of liquid by the soil.
LAND DEVELOPMENT
Any of the following activities:
A. 
The improvement of one lot or two or more contiguous lots, tracts or parcels of land for any purpose involving: (1) a group of two or more residential or nonresidential buildings, whether proposed initially or cumulatively, or a single nonresidential building on a lot or lots regardless of the number of occupants or tenure; or (2) the division or allocation of land or space, whether initially or cumulatively, between or among two or more existing or prospective occupants by means of, or for the purpose of streets, common areas, leaseholds, condominiums, building groups or other features;
B. 
A subdivision of land.
LAND DISTURBANCE
Any activity involving the changing, grading, transportation, fill and any other activity which causes land to be exposed to the danger of erosion.
MAINTENANCE
The upkeep necessary for efficient operation of physical properties.
NATURAL STORMWATER RUNOFF REGIME
A watershed where natural surface configurations, runoff characteristics and defined drainage conveyances have attained the conditions of equilibrium.
OUTFALL
(A) the point, location or structure where drainage discharges from a sewer, drain or other conduit. (B) The conduit leading to the ultimate discharge point.
OUTLET CONTROL STRUCTURE
The means of controlling the relationship between the headwater elevation and the discharge, place at the outlet or downstream end of any structure through which water may flow.
PEAK FLOW
Maximum flow.
PENNSYLVANIA DEP
Pennsylvania Department of Environmental Protection.
PERFORMANCE STANDARD
A standard which establishes an end result or outcome which is to be achieved but does not prescribe specific means for achieving it.
PROFESSIONAL ENGINEER
A licensed professional engineer registered as such in the Commonwealth of Pennsylvania.
RELEASE RATE PERCENTAGE
The watershed factor determined by comparing the maximum rate of runoff from a subbasin to the contributing rate of runoff to the watershed peak rate at specific points of interest.
RETENTION POND
A basin, usually enclosed by artificial dikes, that is used to retard stormwater runoff by temporarily storing the runoff and releasing it at a predetermined rate.
RETURN PERIOD
The average interval in years over which an event of a given magnitude can be expected to recur.
RUNOFF
That part of precipitation which flows over the land.
RUNOFF CHARACTERISTICS
The surface components of any watershed which affect the rate, amount, and direction of stormwater runoff. These may include but are not limited to: vegetation, soils, slopes, and, man-made landscape alterations.
SCS
U.S. Department of Agriculture Soil Conservation Service.
SEDIMENT
Mineral or organic solid material that is being transported or has been moved from its site of origin by air, water or ice and has come to rest.
SEDIMENTATION
The process by which mineral or organic matter is accumulated or deposited by moving water, wind, or gravity.
SLOPE
The face of an embankment or cut section; any ground whose surface makes an angle with the plane of the horizon. Slopes are usually expressed in a percentage based upon vertical difference in feet/100 feet of horizontal distance.
SMALL DEVELOPMENT
Any subdivision or land development which results (or will result when fully constructed) in the creation of 5,000 or less square feet of impervious area and one acre or less of any land cover changes.
STORAGE FACILITY
(See "detention pond" and "retention pond").
STORM FREQUENCY
The average interval in years over which a storm event of a given precipitation volume can be expected to occur.
STORM SEWER
A sewer that carries intercepted surface runoff, street water and other drainage but excludes domestic sewage and industrial waste.
STORMWATER
That portion of precipitation which runs over the land.
STORMWATER COLLECTION SYSTEM
Natural or man-made structures that collect and transport stormwater through or from a drainage area to the point of final outlet including, but not limited to, any of the following: conduits and appurtenant features, canals, channels, ditches, streams, culverts, streets, and pumping stations.
STORMWATER MANAGEMENT PLAN
The plan for managing stormwater runoff adopted by Allegheny County and Westmoreland County as required by the Stormwater Management Act.
SWALE
A low-lying stretch of land which gathers or carries surface water runoff.
WATERCOURSE
Any channel for conveyance of surface water having a defined bed and banks, whether natural or artificial, with perennial or intermittent flow.
WATERSHED
The entire region or area drained by a river or other body of water whether natural or artificial.
WATERSHED STORMWATER MANAGEMENT PLAN
The plan for managing stormwater runoff throughout a designated watershed adopted by Allegheny County and Westmoreland County as required by the Pennsylvania Stormwater Management Act.

§ 23-116 Compatibility.

[Ord. 840, 3/17/1993; § 116]
Permits and approvals issued pursuant to this Part do not relieve the applicant of the responsibility to secure permits or approvals for activities regulated by any other applicable code, rule, act, or ordinance. If more stringent requirements concerning regulation of stormwater control are contained in the other code, rule, or ordinance, the more stringent regulations shall apply.