©2019 Philadelphia Water. After determining the project’s development type, watershed, and earth disturbance area using Section 1.1, the applicant will use this information, in conjunction with the requirement-specific exemptions detailed in this Section, to determine which portions of the Stormwater Regulations apply to the project. Spurring motivation for new stormwater projects on already developed properties, the grants program fulfills a few gains: enhancing a property and reducing monthly water bills — all while restoring Philadelphia’s waterways. Advanced registration is required for both by emailing pwd.planreview@phila.gov. Green roofs help with reducing annual energy costs, typically last twice as long as conventional roofs, and increase rental values. The applicant is referred to Section 3.4.1 for detailed information on how to demonstrate a project’s compliance with the Water Quality requirement. The negative impacts of unmanaged stormwater runoff present a challenge to the City of Philadelphia, including increased pollution concentrations in local waterways, reduced groundwater levels, increased erosion, loss of aquatic habitats, increased flood frequency, and increased quantity, frequency, and duration of combined sewer overflows. The objectives of the Water Quality requirement are as follows: 1. Guidance for calculating the WQv and design requirements for DIC and SMPs can be found in Chapter 3. For clarification on what requirements are applicable, the applicant is referred to Section 1.3 for more information. Learn More. Redevelopment projects located in the Delaware Direct or Lower Schuylkill Watersheds. Water quality benefits are provided, in part, by slowing water down and allowing suspended solids to settle. The Philadelphia Water Department must review plans for development and redevelopment to ensure compliance with City of Philadelphia stormwater regulations. DCIA can be reduced through the use of disconnected impervious cover (DIC), which includes green roofs, porous pavement, and rooftop, pavement, and tree disconnections, which are outlined in greater detail in Section 3.2. Redevelopment projects located in the Delaware Direct Watershed or Lower Schuylkill Watershed, but situated outside of District C, that can discharge directly to the Delaware Direct or Lower Schuylkill main channels without the use of City infrastructure. Uncontrolled large storm events have the potential to overwhelm the capacity of sewer infrastructure and receiving streams, particularly in areas that already experience high flows or have capacity limitations. One common tool used by the development community to meet the 20% reduction in impervious area exemption condition is installing a green roof. Find more information about the update here. The 2018 PAG-13 update includes increased regulations that should enhance stormwater quality. Philadelphia is also required by Federal and State law to manage stormwater runoff. For all areas not served by a combined sewer — including separate sewer areas, direct discharge projects, and un-sewered areas — for which infiltration is infeasible for all or a portion of the WQv, 100% of the WQv that is not infiltrated must be routed through an acceptable pollutant-reducing practice and detained in each SMP for no more than 72 hours. The Flood Control requirement stipulates that a development project meet or reduce peak rates of runoff, as determined by its Flood Management District, from predevelopment to post-development conditions during certain storm events. The State enforces these standards by issuing permits that regulate combined sewer overflows and stormwater runoff in areas with separate sewer systems. Public Health and Safety Release Rate: Manage the rate of runoff from a site located in an area where known flooding has occurred due to constraints in the sewer network. This is an alert about something very important! Grainery Green Roof; Philadelphia Zoo . Projects meeting the following characteristics are exempt from the Flood Control requirement: For the purposes of calculating impervious area reduction, the predevelopment impervious area is determined by the dominant land use for the ten years preceding the date of a project’s ERSA Application (Section 2.1) submission. PHILADELPHIA (Feb. 5, 2021) – The City of Pittsburgh and the Pittsburgh Water and Sewer Authority (PWSA) are required to adhere to a schedule of corrective actions to address stormwater inspection and enforcement violations under a consent agreement announced today by the U.S. Environmental Protection Agency. The changes will improve the health of Philadelphia’s rivers, minimize local flooding, and encourage the use of green infrastructure throughout the city. Today, July 1st, updated Stormwater Regulations for development projects became effective. Engineers' Club of Philadelphia - Geologic Perspective on Stormwater Infiltration: 21 Nov 2013 12 Lessons on Applying Stormwater Management to Transportation Projects: 19 Sep 2013 Floodplain Restoration by Mark Gutshall, PWS – Executive Vice President, LandStudies, Inc. … Redevelopment projects that reduce impervious area within the limits of earth disturbance (excluding public right-of-way) by at least 20%, based on a comparison of predevelopment impervious area to post-development DCIA. An applicant with a project believed to be located within a designated PHS boundary, or wishing to learn more about whether a PHS Release Rate applies to the project, is advised to contact PWD Stormwater Plan Review prior to submittal. 6 Post-Construction and Operations and Maintenance Guidance, 1.2.1 Post-Construction Stormwater Management Requirements, 1.2.2 Erosion and Sediment Control Requirement, 1.3.1 Retrofit Project Applicability and Initiation, 1.3.2 Retrofit Project Requirements and Guidance, 2.4 Expedited Post-Construction Stormwater Management Plan Reviews, 2.6 PWD’s Role in Philadelphia's Development Process, 2.7 PWD and Pennsylvania Department of Environmental Protection, 2.0.1 Understanding PWD’s Stormwater Review Process, 2.7.1 National Pollutant Discharge Elimination System Permits, 3.1 Site Assessment and Stormwater Management Strategies, 3.3 Infiltration Testing and Soil Assessment for SMP Design, 3.5 Integrated Stormwater Management Examples, 3.0.2 Integrated Site and Stormwater Management Assessment and Design Process Overview, 3.0.3 Interactions between Design Strategies, Stormwater Regulations, and Review Paths, 3.1.1 Background Site Factors and Site Factors Inventory, 3.1.7 Pollutant- Reducing Practices and Roof Runoff Isolation, 3.1.8 How to Use SMPs to Comply with the Regulations, 3.2.2 SMP Hierarchy and Selection Process, 3.2.4 Stormwater Management Banking and Trading, 3.2.5 SMP Design Guidance and General Requirements, 3.3.1 Infiltration Testing and Soil Characterization Plan Development, 3.3.6 Evaluation of Infiltration Testing Results, 3.4.1 Regulatory Compliance Documentation Requirements, 3.4.3 Calculation Methods and Design Tools, 3.5.1 Commercial Office Building Development, 3.5.2 Residential Multi-Family Development, 4.1.1 Bioinfiltration/ Bioretention Introduction, 4.1.2 Bioinfiltration/ Bioretention Components, 4.1.3 Bioinfiltration/ Bioretention Design Standards, 4.1.4 Bioinfiltration/ Bioretention Material Standards, 4.1.5 Bioinfiltration/ Bioretention Construction Guidance, 4.1.6 Bioinfiltration/ Bioretention Maintenance Guidance, 4.2.5 Porous Pavement Construction Guidance, 4.2.6 Porous Pavement Maintenance Guidance, 4.4.1 Subsurface Infiltration Introduction, 4.4.3 Subsurface Infiltration Design Standards, 4.4.4 Subsurface Infiltration Material Standards, 4.4.5 Subsurface Infiltration Construction Guidance, 4.4.6 Subsurface Infiltration Maintenance Guidance, 4.7.3 Pond and Wet Basin Design Standards, 4.7.4 Pond and Wet Basin Material Standards, 4.7.5 Pond and Wet Basin Construction Guidance, 4.7.6 Pond and Wet Basin Maintenance Guidance, 4.8.3 Subsurface Detention Design Standards, 4.8.4 Subsurface Detention Material Standards, 4.8.5 Subsurface Detention Construction Guidance, 4.8.6 Subsurface Detention Maintenance Guidance, 5.1.1 Coordinating Inspections with Other PWD Units, 5.2.1 Erosion and Sediment-Related Construction Issues, 5.2.2 Stormwater Management Practice-Related Construction Issues, 6.2 Stormwater Management Practice Inspection Guidance, 6.1.1 Maintenance Requirements for Property Owners, 6.1.2 Operations and Maintenance Agreements, Table E-1: General Plan Sheet Requirements, Table E-2: Existing Conditions Plan Requirements, Table E-3: Conceptual Stormwater Management Plan Requirements, Table E-4: Erosion and Sediment Control Plan Requirements, Table E-5: Standard Erosion and Sediment Control Notes, Table E-6: Standard Sequence of Construction Notes, Table E-7: Post-Construction Stormwater Management Plan Report Requirements, F.2 Post-Construction Stormwater Management Plan, F.5 Infiltration Testing and Soil Assessment, F.6 Hydrologic Model and Calculation Methods, Find more information about the update here. 28 Stormwater Solutions jobs available in Philadelphia, PA on Indeed.com. The Water Quality requirement stipulates infiltration of the first 1.5 inches of runoff from all directly connected impervious area (DCIA) within the limits of earth disturbance. Stormwater Grants. Ch. The applicant must refer to their project’s point of stormwater discharge when determining which requirements apply to their project. The Stormwater Solution: Green City, Clean Waters (GC/CW) is the Philadelphia Water Department’s (PWD) 25-year plan and was created to provide a clear pathway to a sustainable future while strengthening the utility, broadening its mission, and complying with environmental laws and regulations. The applicant is referred to Section 4.3 for more information on green roofs. Property owners often find that by incorporating landscape elements to reduce their DCIA, they simultaneously increase their property value and retail sales, reduce crime, and improve mental health and worker productivity. The Philadelphia, Pennsylvania metro area covers nearly 150 square miles and is home to more than 1,500,000 people. In addition, Philadelphia Water unveiled a brand new website, redesigned to provide easy access to the Stormwater Management Guidance Manual and to submit a project application online. At minimum, all earth disturbance must comply with the E&S requirements of the PA DEP as specified in 25 Pa. Code §102.4. Interactive Map. Projects meeting the following characteristics are exempt from the Channel Protection requirement: For the purposes of calculating impervious area reduction, the predevelopment impervious area is determined by the dominant land use for the ten years preceding the date of the project’s Existing Resources and Site Analysis (ERSA) Application (Section 2.1) submission. Effective July 1, 2015, the Philadelphia Water Department (PWD) will be implementing new stormwater management regulations in order to meet the goals outlined in Green City, Clean Waters, which is Philadelphia’s 25-year plan for managing combined sewer overflows. This site provides information for development and redevelopment projects that trigger Philadelphia's stormwater regulations. Management of peak rates from smaller storm events is referred to as Channel Protection because one of its benefits is to reduce erosive flows in downstream channels. Please read this important alert about Apply to Civil Engineer, Environmental Engineer, Civil Designer and more! This is an alert All rights reserved. These maps are approximations of sewershed boundaries. 4 Stormwater Management Practice Guidance, Ch. The applicant is referred to Table 3.4-1 for a listing of Flood Management Districts and their associated rate reductions by storm event. Philadelphia holds prominence in American history textbooks for many reasons, but few know the city was also at the forefront of treating and supplying water. Stormwater Billing team are happy to work with community garden members interested in applying for this discount. A PHS Release Rate requirement applies to all areas within a project’s limit of earth disturbance, pervious and impervious alike. For information on how the PWD Stormwater Regulations are applied to private development projects, please refer to Chapter 1 of the PWD Stormwater Manual. These stormwater regulations are based upon a permitting program that restricts the amount of stormwater effluent originating from urban development. Figure 1.2-3: Flood Control Exemption Conditions. Chapter 6: Stormwater Stormwater regulations ensure that Philadelphia has a progressive and effective stormwater program that meets the state and federal requirements while coordinating with the changing regulations in upstream municipalities. This exemption applies only to peak rates of runoff for storm events greater than the five-year storm. As a result, stormwater runoff and frequent combined-sewer overflows were affecting the city’s water quality. FUNDING To claim a predominant land use which differs from the existing condition, the applicant must submit a predominant land use plan, in addition to an Existing Conditions Plan, to PWD Stormwater Plan Review. Detailed information regarding the Stormwater Regulations can be found within Chapter 6, Stormwater Management, of PWD’s Regulations. To address this, peak flow control beyond the requirements of the Channel Protection and Flood Control requirements is necessary in accordance with the PHS Release Rate requirement. Therefore, when infiltration is not feasible, water quality improvement in combined sewer areas must be achieved not only by reducing runoff pollutant load concentrations, but also by managing the quantity and timing of stormwater discharge. Its urban landscape of buildings and roadways—including miles of paved surfaces—makes managing stormwater a challenge. The designer is referred to Chapter 3 for more information on stormwater management design strategies. After the State approves the plans, municipalities implement them in part through ordinances that regulate land development. The owner of a development site is responsible for ensuring that active construction activities are not in violation of 25 Pa. Code Chapters 92 and/or 102 or the Clean Streams Law, the act of June 22, 1937, P.L. Green Streets allow runoff to soak into soil, filtering out pollutants like oil, and reduce the amount of stormwater making its way into Philadelphia’s combined sewer pipes, which reduces the combined sewer overflows that degrade our waterways. Collective Progress. The applicant is referred to the sewershed maps in Appendix D to determine the type of sewershed in which their project is located. This requirement applies equally to rivers, streams, and sites discharging to drainage ditches, natural or man-made ponds, and sewers that ultimately discharge to receiving waters, even if this discharge is indirect. in green infrastructure and aging infrastructure in major cities like Pittsburgh and Philadelphia, as well as updates to state regulations, such as the PAG-13 General Permit, are expected to increase the quality of stormwater discharge from MS4s. A Green Street uses green stormwater infrastructure to capture and manage rain or melting snow (runoff) directly from the street. Philadelphia is the first U.S. city to attempt an ambitious goal: a large-scale green infrastructure plan to manage its stormwater. Detention and slow release reduces peak flows in the combined sewer during wet weather events, thus reducing the frequency and magnitude of CSOs. important alert about this very important thing!! While the four previously discussed Stormwater Regulations relate to PCSM Requirements, effective stormwater management is also critical during the construction process. New developments are now required to handle more water, slow stormwater more effectively, and improve pollutant reduction. Starting Feburary 16, 2021 PWD will be allowing in-person delieveries on a limited basis and holding Walk-Ins Virturally. 2 Submission, Review, and Approval Procedures, Ch. To apply for this exemption, the applicant must provide sufficient documentation regarding the proposed point of discharge as part of their application to PWD. The Philadelphia Water Department (PWD) implemented the stormwater management regulations to address a variety of water resource concerns including enhancing water quality, decreasing stormwater runoff and flooding frequencies, and protecting impaired streambanks and channels. Philadelphia; Phase II, which was adopted in 2000 and revised in 2005, broadens the rules and includes smaller cities. The Stormwater Regulations have four main components: Water Quality, Channel Protection, Flood Control, and Public Health and Safety Release Rate requirements. The applicant is referred to Section 3.3 for guidance on determining and documenting infiltration feasibility. Reduce combined sewer overflows (CSOs) from the City’s combined sewer systems.The Water Quality requirement focuses on the removal of pollutants from stormwater runoff and is similar to requirements in surrounding states and other major cities across the cou… Philadelphia’s combined sewer system has 164 “overflow locations” where, after heavy rain, stormwater runoff contaminated with untreated sewage flows directly into local waterways. These impacts can contribute to flooding, maintenance concerns, and significant environmental issues. In some areas, sewer capacity limitations have the potential to impact public health and safety. Creating a rain garden offers therapuetic exercise, attracts wildlife, and helps keep stormwater runoff from overburdening sewer systems--or entering local streams. Philadelphia began following updated stormwater regulations July 1. Recharge the groundwater table and increase stream base flows; 3. 2 Submission, Review, and Approval Procedures, Ch. Generally, the physical, chemical, and biological processes that take place in a system that incorporates soil, water, and plants provide the best water quality improvements. If infiltration is feasible on the project site, the Water Quality requirement must be met by infiltrating 100% of the WQv through stormwater management practices (SMPs). If infiltration is infeasible, or where it can be demonstrated that infiltration would cause property or environmental damage, the method of compliance with the Water Quality requirement differs based on the type of sewershed in which a project is located. The applicant is referred to Section 2.2 and Section 2.3 for information on Review Paths and Review Phases, respectively. This site provides information to private-landowners who want to retrofit their property with stormwater management practices. Submit a Project; Stormwater Management Guidance Manual; Technical Resources Infiltration of stormwater runoff can significantly reduce pollutant loads reaching surface water and generally does not pose a threat to groundwater quality if there is sufficient separation from the water table. All rights reserved. Redevelopment projects with less than one acre of earth disturbance. All projects in the City of Philadelphia that generate earth disturbance of 15,000 square feet or more, or 5,000 square feet in the Darby and Cobbs Creeks Watershed, are subject to the PCSM Requirements and will follow the Development Compliance Review Path. Review of stormwater management plans is authorized by section 14-704 of the Philadelphia Code. This is a resource for planners and designers seeking guidance on the process for creating green stormwater infrastructure (GSI) for Philadelphia Water. In combined sewer systems, CSOs must be reduced by maintenance of a slow release rate set to match the area-weighted wet weather treatment rate of PWD’s Water Pollution Control Plants. For all areas served by a combined sewer and for which infiltration is infeasible for all or a portion of the WQv, 100% of the WQv that is not infiltrated must be routed through an acceptable pollutant-reducing practice and detained in each SMP for no more than 72 hours. Please note that the stormwater management projects or Best Management Practices (BMPs) in this guide are voluntary projects recommended strictly for homeowners. Refer to the newsfeed for detailed instructions. Effective July 1, 2015, the Philadelphia Water Department updated its Stormwater Regulations for private development. At minimum, all projects, regardless of size, must install E&S controls which are appropriate given the site layout, neighboring features, and proposed disturbance activities. Channel Protection: Protect stream banks by minimizing the rate of erosion from stormwater runoff. Learn more about Act 167 Planning in Philadelphia at phillywatersheds.org. Stormwater Retrofit projects should be designed to meet most of the Water Quality requirement design standards. Embracing the Stormwater Regulations. More recently, NPDES Phase II regulations added permit coverage for small construction activities that disturb one to less than five acres. Redevelopment projects located in District C-1 that discharge directly to the Tookany/Tacony-Frankford main channel or major tributaries without the use of City infrastructure. Projects that propose to disconnect 95% or more of their post-development impervious area may qualify for an expedited Disconnection Green Review as described in Section 2.4. Development of new Streets and Street Maintenance Activities. Flood Control: Manage the rate of runoff from a property to prevent localized flooding. About the Philadelphia Water Department: The Philadelphia Water Department serves the Greater Philadelphia region by providing integrated water, wastewater, and stormwater services. PCSM Requirements regulate how stormwater runoff leaves a project site in the built or post-development condition. By expanding green infrastructure—that is, such things as gardens, green roofs, and rain barrels—Philadelphia is seeking to capture or divert rainwater and keep it from overflowing the city’s sewer system in heavy storms. Private & Public Projects . This is an alert about something very important! Recharge the groundwater table and increase stream base flows; Reduce combined sewer overflows (CSOs) from the City’s combined sewer systems. The Water Quality and Channel Protection requirements are not additive; however, management of the WQv may reduce the storage volume needed to meet the Channel Protection requirement. Clean Water Act - Passed by Congress in 1972, the Clean Water Act established water quality standards for surface water in the United States. Philadelphia enforces several Act 167 plans that were developed in conjunction with bordering counties. Redevelopment projects located in Flood Management District C (. 6 Post-Construction and Operations and Maintenance Guidance, 1.2.1 Post-Construction Stormwater Management Requirements, 1.2.2 Erosion and Sediment Control Requirement, 1.3.1 Retrofit Project Applicability and Initiation, 1.3.2 Retrofit Project Requirements and Guidance, 2.4 Expedited Post-Construction Stormwater Management Plan Reviews, 2.6 PWD’s Role in Philadelphia's Development Process, 2.7 PWD and Pennsylvania Department of Environmental Protection, 2.0.1 Understanding PWD’s Stormwater Review Process, 2.7.1 National Pollutant Discharge Elimination System Permits, 3.1 Site Assessment and Stormwater Management Strategies, 3.3 Infiltration Testing and Soil Assessment for SMP Design, 3.5 Integrated Stormwater Management Examples, 3.0.2 Integrated Site and Stormwater Management Assessment and Design Process Overview, 3.0.3 Interactions between Design Strategies, Stormwater Regulations, and Review Paths, 3.1.1 Background Site Factors and Site Factors Inventory, 3.1.7 Pollutant- Reducing Practices and Roof Runoff Isolation, 3.1.8 How to Use SMPs to Comply with the Regulations, 3.2.2 SMP Hierarchy and Selection Process, 3.2.4 Stormwater Management Banking and Trading, 3.2.5 SMP Design Guidance and General Requirements, 3.3.1 Infiltration Testing and Soil Characterization Plan Development, 3.3.6 Evaluation of Infiltration Testing Results, 3.4.1 Regulatory Compliance Documentation Requirements, 3.4.3 Calculation Methods and Design Tools, 3.5.1 Commercial Office Building Development, 3.5.2 Residential Multi-Family Development, 4.1.1 Bioinfiltration/ Bioretention Introduction, 4.1.2 Bioinfiltration/ Bioretention Components, 4.1.3 Bioinfiltration/ Bioretention Design Standards, 4.1.4 Bioinfiltration/ Bioretention Material Standards, 4.1.5 Bioinfiltration/ Bioretention Construction Guidance, 4.1.6 Bioinfiltration/ Bioretention Maintenance Guidance, 4.2.5 Porous Pavement Construction Guidance, 4.2.6 Porous Pavement Maintenance Guidance, 4.4.1 Subsurface Infiltration Introduction, 4.4.3 Subsurface Infiltration Design Standards, 4.4.4 Subsurface Infiltration Material Standards, 4.4.5 Subsurface Infiltration Construction Guidance, 4.4.6 Subsurface Infiltration Maintenance Guidance, 4.7.3 Pond and Wet Basin Design Standards, 4.7.4 Pond and Wet Basin Material Standards, 4.7.5 Pond and Wet Basin Construction Guidance, 4.7.6 Pond and Wet Basin Maintenance Guidance, 4.8.3 Subsurface Detention Design Standards, 4.8.4 Subsurface Detention Material Standards, 4.8.5 Subsurface Detention Construction Guidance, 4.8.6 Subsurface Detention Maintenance Guidance, 5.1.1 Coordinating Inspections with Other PWD Units, 5.2.1 Erosion and Sediment-Related Construction Issues, 5.2.2 Stormwater Management Practice-Related Construction Issues, 6.2 Stormwater Management Practice Inspection Guidance, 6.1.1 Maintenance Requirements for Property Owners, 6.1.2 Operations and Maintenance Agreements, Table E-1: General Plan Sheet Requirements, Table E-2: Existing Conditions Plan Requirements, Table E-3: Conceptual Stormwater Management Plan Requirements, Table E-4: Erosion and Sediment Control Plan Requirements, Table E-5: Standard Erosion and Sediment Control Notes, Table E-6: Standard Sequence of Construction Notes, Table E-7: Post-Construction Stormwater Management Plan Report Requirements, F.2 Post-Construction Stormwater Management Plan, F.5 Infiltration Testing and Soil Assessment, F.6 Hydrologic Model and Calculation Methods, National Resources Defense Council website.
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