Philadelphia City Planning Commission (PCPC) provides guidance on Unmanaged stormwater runoff—rainfall in developed areas that quickly “runs off” of impervious surfaces rather than soaking into the ground—negatively affects the aquatic and streamside habitats of streams and rivers in Philadelphia. Reviewing development plans for compliance; Ensuring that SMPs are correctly designed, installed, and maintained in accordance with the Stormwater Regulations; Coordinating with other PWD programs involved in the development review process to establish consistency across the Department and ensure required approvals are obtained; Acting as PWD’s link to the larger development process in the City, most critically the Zoning and Building Permit process administered by the City of Philadelphia Department of Licenses and Inspections (L&I). In an urban, developed environment such as Philadelphia, rain falls on the ground, "runs off" and flows into the sewer system. Additionally, the group administers credits and incentives programs to eligible property owners to reduce their Stormwater Charge. Learn More. Private Development Services is responsible for administering the Department's Stormwater Regulations through the review, construction inspection, and maintenance inspection of development sites. Questions? Philadelphia Stormwater Management Guidance Manual. Processes Appeals and Credits application forms to adjust Stormwater Charges, accurately reflecting the on-site conditions; Reviews and updates gross and impervious area delineations for Philadelphia’s Stormwater Billing parcels, and maintains GIS data displayed on the. Summer 2014- Philadelphia Water sought feedback about the Stormwater Management Guidance Manual by conducting telephone interviews with frequent users of the manual. Please use the links on the right to learn more about these topics. The final piece of understanding the Stormwater Regulations focuses on preparing submissions and navigating the review process. Specific requirements for soil and infiltration testing and other related issues are discussed in Section 3.3. (right-click and select "save as" to download). Private Development Services provides a range of services relating to the enforcement and implementation of the Stormwater Regulations, including the following: PWD encourages the applicant to contact staff throughout the project lifecycle, from preliminary planning through O&M. Philadelphia: Philadelphia Stormwater Management Guidance Manual: Philadelphia Water: 2015: San Antonio: San Antonio LID Guidance Manual: Center for Research in Water Resources: 2011: Tahoe Region: Tahoe Regional Planning Agency BMP Handbook: Tahoe regional Planning Agency: 2014: Toronto: Toronto Low Impact Development Stormwater Management … All rights reserved. These changing regulations include new approaches to stormwater management, which often require improvements in stormwater quality prior to discharge, reductions in the volume and rate of runoff, and reductions in stormwater-related erosion and sedimentation. City of Philadelphia Stormwater Management Guidance Manual 2.0 (2 of 4) 5. We will cover technical and procedural improvements, and walk through the new Stormwater Management Guidance Manual, Plan Review Website and ERSA application. More information on Stormwater Retrofits can be found in Section 1.3, and Sections 2.2.4 and 2.3.4 contain information on the Stormwater Retrofit Review Path and Review Phase, respectively. Before a reviewer has been assigned to the project, the applicant should use the general email account for all inquiries to ensure an efficient response time. In 2006, PWD enacted Stormwater Regulations that included requirements to assist the City in addressing CSOs. This site provides information for the design of water and sewer mains for Philadelphia Water. Clarified test method procedures for borehole infiltration tests. Another program, the Stormwater Credits Program, issues credit to eligible non-residential property owners for stormwater management and favorable stormwater characteristics on their property. If additional clarity or discussion is required, the applicant is encouraged to request in-person meetings. Stormwater Management Regulations Stormwater Management rules from the Philadelphia Code, Section 14-1603.1. Stormwater Management. Conducting post-construction inspections to ensure the property owner maintains SMPs to design function. Copies of the Manual can be downloaded from the website. Stormwater Billing and Incentives is another program within the PWD GSI Implementation Unit. Manage more water. Rates of evaporation are also reduced due to a lack of vegetation. To help developers select SMPs, PWD developed a hierarchy that uses ranking factors to prioritize acceptable SMPs. The goal is to highlight aspects of the Manual that support the prioritization of GSI as well as to identify areas that could be improved to better supports the prioritization of GSI. The E&S Requirement stipulates that practices be employed during construction to reduce any erosion and sedimentation that occur as a result of development activities. Combined Sewer Overflow (CSO) Control Policy: Published by the Environmental Protection Agency (EPA) in 1994, this policy established a national approach for controlling CSOs through the National Pollutant Discharge Elimination System (NPDES) Permit program. Philadelphia Water is making changes to our Stormwater Regulations to meet Federal and State requirements under the Clean At its core, the Manual provides detailed guidance for the applicant on how to most quickly and efficiently comply with the Stormwater Regulations or meet PWD design criteria for Development, Stormwater Retrofits, and other construction projects. Questions? (3) To the maximum extent practicable, incorporate the techniques for low-impact development practices described in the Pennsylvania Stormwater Best Management Practices Manual (BMP Manual) or the Philadelphia Stormwater Management Guidance Manual. As with many other aspects of PWD’s program, it depends strongly on the type of project and the associated stormwater management requirements, submissions, and reviews. The Non-Residential Stormwater Billing website has links to the Stormwater Parcel Viewer, Credits Explorer, frequently asked questions on Philadelphia’s Stormwater Charge, and forms and applications available to property owners looking to adjust their Stormwater Charge. (p) Operations & Maintenance Agreement (O & M Agreement): Agreement between the Property Owner and the City which outlines the Stormwater Plan Review is the unit within Philadelphia Water responsible for reviewing development projects in the City of Philadelphia to ensure compliance with the Stormwater Regulations. The applicant must receive approvals from PWD before a Zoning or Building Permit may be issued; Coordinating with other reviewing entities such as the Philadelphia City Planning Commission (PCPC), Philadelphia Streets Department (Streets Department), and the Pennsylvania Department of Environmental Protection (PA DEP), to ensure that consistent information is provided by the applicant to all agencies; Administering inspection activities to ensure that SMPs are installed according to the approved plans; Conducting inspections at the close of construction to record information about the project’s as-built conditions, which the applicant must incorporate into a Record Drawing; and. Learn More. (o) New Development: Development project on an unimproved tract of land where structures or impervious surfaces were removed before January 1, 1970. Questions regarding accurate parcel billing can be directed during normal business hours (8 am to 5 pm) to (215) 685-6244 or pwd.stormwaterappeals@phila.gov. Before a reviewer has been assigned to the project, the applicant should use the general email account for all inquiries to ensure an efficient response time. The Philadelphia Water Department wanted to provide a more accessible stormwater management guidance manual, improve the quality of plan review submissions, and streamline the online application process. 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, Chapter 1 – Stormwater Management Requirements, Chapter 2 – Submission, Review, and Approval Procedures, Chapter 3 – Site Design and Stormwater Management Integration, Chapter 4 – Stormwater Management Practice Guidance, Chapter 6 – Post-Construction and Operations & Maintenance Guidance, Stormwater Management Service Charge Credits and Appeals Manual, Learn about the Stormwater Regulations and Stormwater Retrofits, determine if a project is subject to the Stormwater Regulations, and find out which requirements need to be met, Understand the submission and review process for a project and get detailed guidance in preparing submissions to PWD, Learn how to perform site assessments, including infiltration testing, and design stormwater management controls, including disconnected impervious cover and SMPs, to comply with the Stormwater Regulations, Obtain SMP-specific guidance on use, applicability, components, design requirements, materials specifications, construction sequencing, and O&M, Understand PWD’s construction inspection process, identify common problems with SMP and Erosion and Sediment Control (E&S) construction, and prepare a Construction Certification Package and Record Drawings, Understand PWD’s SMP maintenance requirements, learn how to inspect, operate, and maintain SMPs and other stormwater controls, get detailed guidance on O&M Agreements, and apply for stormwater credits, Restore and maintain the chemical, physical, and biological integrity of the nation’s waterways, To ensure safe drinking water for the public by establishing standards for water quality, The Pennsylvania Stormwater Management Act of 1978, Develop county-based stormwater management plans to ensure that stormwater is managed properly, particularly with regard to flooding, Reduce and eliminate sources of pollution coming from municipally-owned separate sewer systems into the Nation’s water bodies, Eliminate discharges of untreated wastewater through combined sewer overflows into the nation’s waterbodies. The SMPs discussed in this Manual incorporate a variety of technologies designed to manage stormwater. This Manual provides information for development and redevelopment projects that trigger Philadelphia's stormwater regulations. We also assisted in developing the Philadelphia Stormwater Management Guidance Manual, which helps explain program requirements and new design guidelines for area developers. Review of stormwater management plans is authorized by section 14-704 of the Philadelphia Code. Some projects may need to meet multiple requirements, while others may be subject to only certain portions of the Stormwater Regulations (Figure 2). This group is responsible for assessing and adjusting the Stormwater Management Service Charge (Stormwater Charge) for parcels within the City of Philadelphia based on the property classification, gross parcel area, and impervious parcel area. The applicant should use each Chapter as follows: Table 1: How to Use the Chapters in this Manual. This site provides information for development and redevelopment projects that trigger Philadelphia's stormwater regulations. development in Philadelphia Stormwater Management Guidance Manual. Please refer to this manual for submission, technical, construction, and post-construction guidance. Green City, Clean Waters outlines a 25-year, $2.4 billion plan to protect and enhance Philadelphia’s combined sewer watersheds by managing stormwater with innovative green stormwater infrastructure. The regulatory applicability factors include its development type, its watershed, and the amount of earth disturbance associated with the project. In a natural, undeveloped environment, rain falls on the ground and evaporates or is absorbed into the soil. City of Philadelphia Stormwater Management Guidance Manual 2.0 (3 of 4) 6. Figure 3: Stormwater Approval Process for Projects on the Development Compliance Review Path Showing Relationship to Major City Approvals. 3. This site provides information to private-landowners who want to retrofit their property with stormwater management practices. The SMP Hierarchy uses factors important to PWD’s efforts to clean up Philadelphia’s waterways as well as those of primary concern to developers such as ease of maintenance, cost, and impact on buildable area. Stormwater Billing and Incentives can be reached during normal business hours (8 am to 5 pm) at (215) 685- 6070 or pwd.stormwatercredits@phila.gov for Credits and Incentives Program-related questions. The Bureau of Clean Water administers the NPDES permitting and compliance monitoring programs for industrial, municipal, and construction stormwater in Pennsylvania, and oversees the implementation of the Act 167 stormwater management program in DEP’s regional offices. These problems are not unique to Philadelphia. The Philadelphia Water Department must review plans for development and redevelopment to ensure compliance with City of Philadelphia stormwater regulations. Quick Read: What the Changes Mean. about something very important! Since 2011, private developers have built over 900 green stormwater management tools in the city, and the new regulations will provide incentives for even more. The Private Development Services website is geared toward the applicant and the development community at large and is the best place to find all applicant resources. PWD prepared and submitted to PA DEP a Long Term Control Plan Update (LTCPU) known as Green City, Clean Waters, to outline specific steps needed to implement the provisions of the CO&A. 9,564 Greened Acres, each of which represents an acre of impervious cover within the combined sewer service area that has at least the first inch of stormwater runoff managed by stormwater infrastructure. If the project is located within the Wissahickon Watershed the Philadelphia Code and Charter, § 1603.2 Environmental Controls for the Wissahickon Watershed may require additional on-site stormwater management depending on the projects location within the watershed. While PWD is investing billions of dollars to implement the bulk of the required upgrades, PWD, through the Stormwater Regulations (Appendix C), also requires the development community to do its part to help manage stormwater. (p) New Development: Development project on an unimproved tract of land where structures or impervious surfaces were removed before January 1, 1970. The goal is to highlight aspects of the Manual that support the prioritization of GSI as well as to identify areas that could be improved to better supports the prioritization of GSI. It provides SMP-specific information on applicability and uses, components, design requirements, material specifications, and construction and maintenance guidance. Understanding the Stormwater Regulations' applicability to a project directly impacts the type of review PWD conducts, which PWD group reviews the project, and the subsequent submission requirements. Review Paths are a linear series of submission and review steps (Review Phases) taken to obtain stormwater management approval or exemption. There are also manuals and resources available, such as the Stormwater Management Service Charge Credits and Appeals Manual (Credits and Appeals Manual), to further understand the Stormwater Charge and connect with vendors who can assist with these forms. If parking is provided in a surface parking lot and the applicant provides more than 20 spaces beyond the minimum off-street parking required by this Zoning Code, all surface spaces beyond the minimum required shall be surfaced with pervious paving materials that meet the design standards of the Philadelphia Stormwater Management Guidance Manual. Chapters 1 through 4 focus on the stormwater design, submittal, and approval process, while Chapters 5 and 6 discuss construction and post-construction topics. The goal of healthy, clean rivers in Philadelphia is an ambitious one, but one that PWD and its partners are aggressively working toward. Philadelphia Water will host five information sessions this summer at the Municipal Services Building. City of Philadelphia Stormwater Management Guidance Manual 2.0 (1 of 4) 4. Stormwater Regulations applicability refers to which projects are subject to the Stormwater Regulations, which may not necessarily require on-site stormwater management. This site provides information to private-landowners who want to retrofit their property with stormwater management practices. Disconnect impervious surfaces by directing runoff to pervious areas, wherever possible. 85% equivalent mass capture of specific pollutants, such as suspended solids and coliform bacteria, which means removing the same amount of pollutants that would be removed if stormwater were to pass through a wastewater treatment plant. PWD requires that the applicant provide documentation of these conditions and request a waiver from the infiltration requirement via the Online Technical Worksheet. PWD’s Stormwater Regulations cover a wide spectrum of development projects. Under the Stormwater Regulations, not all projects are subject to the same requirements. Our Advocacy Committee has agreed that they want to conduct a formal review of and comment on this new Manual. Conversely, in “natural,” undeveloped conditions, the majority of rainfall either infiltrates or evaporates back into the air. Infiltration SMPs must be utilized unless it is demonstrated that they are not feasible due to poor soils, bedrock, soil contamination or other site constraints. This website has information about how to apply for a Stormwater Grant, including updates on application deadlines, the Stormwater Grants Application Guide, and additional resources. PWD organizes the different submission procedures and review processes into four Review Paths. The updated Stormwater Regulations in Philadelphia ensure that the City has an effective, comprehensive stormwater program that meets State and Federal requirements and is adaptable to a changing regulatory context. PWD requires that many development sites in the City implement stormwater management controls. Through these regulations, cities and developers are working together to prevent additional pollution and damage to waterways by controlling stormwater. Please read this important alert about What is stormwater? The Stormwater Grants website is specifically geared for property owners looking to apply for a Stormwater Grant, which can offset costs associated with a voluntary Stormwater Retrofit on their property. All rights reserved. This Section provides a first look at PWD's preferred approach to stormwater management design. (q) Operations & Maintenance Agreement (O & M Agreement): Agreement between the Property Owner and the City which Learn More. This is an alert about something very important! The Stormwater Regulations (Appendix C) define the specific requirements that need to be met for various types of development in the City. Today, July 1st, updated Stormwater Regulations for development projects became effective. Section 3.2 contains a significant amount of design guidance that the designer should use to integrate robust and cost-effective stormwater management into site designs in ways that achieve the Philadelphia Water Department's (PWD’s) key stormwater management goals of minimizing the harmful effects of flooding and maintaining the health of Philadelphia… Chapter 3 and Chapter 4 provide detailed guidance to the applicant in designing stormwater management systems that comply with the Stormwater Regulations and PWD design requirements for Stormwater Retrofits. Our Advocacy Committee has agreed that they want to conduct a formal review of and comment on this new Manual. Stormwater Incentives has officially included Stormwater Retrofit guidance into the Stormwater Management Guidance Manual (v3.2) on October 1st, 2020. Water Quality Improvements. In contrast, healthy streams and rivers have lower rates of erosion, plenty of flow during dry periods for fish and aquatic life, high water quality that supports both recreational uses such as swimming and fishing and potable water use, and flood less frequently and less severely. Review Philadelphia Water's Stormwater Management Guidance Manualto determine applicable E&S requirements, and understand what approvals or permits must be obtained before construction. These steps are discussed in more detail within Section 2.3. When this happens, the PA DEP permits Philadelphia, as is common with other cities containing combined sewer systems, to discharge excess untreated wastewater into nearby waterbodies. Every acre of impervious cover in Philadelphia produces about 1 million gallons of polluted runoff per year, causing sewer overflows, degraded stream habitat, and water quality problems. We’ve updated the Stormwater Grants Application Guide. this very important thing!! This site provides information for development and redevelopment projects that trigger Philadelphia's stormwater regulations. In total, the group provides the following services: PWD encourages the applicant to contact staff throughout the project lifecycle, from preliminary planning through O&M. ©2016-2018 Philadelphia Water. Stormwater management on development sites is critical to the success of Green City, Clean Waters. Private Development Services is a program within the PWD Green Stormwater Infrastructure (GSI) Implementation Unit. Updated presoak and rate measurement requirements for infiltration tests. The new Stormwater Management Guidance Manual goes into effect today, July 1st. Starting Feburary 16, 2021 PWD will be allowing in-person delieveries on a limited basis and holding Walk-Ins Virturally. ©2019 Philadelphia Water. Stormwater regulations are changing around the country to address these and similar problems. Visit PWDplanreview.org to access the manual This manual has been removed but the current retrofit standards generally align with the Philadelphia Stormwater Management Guidance Manual. Click on sections below to navigate directly to sections of interest, or download the full version. The Green Streets Design Manual provides design standards and procedural guidance for developing green streets that manage stormwater runoff. The fastest way to get a project through the review process is to provide PWD with a high-quality submission that meets all of the submission requirements. The Philadelphia Stormwater Management Guidance Manual (the Manual, or SMGM) is a comprehensive resource for the development community in complying with the Philadelphia Water Department (PWD) Stormwater Regulations (Stormwater Regulations) and designing stormwater management on private property. In Chapter 3 and Chapter 4 of the Manual, PWD provides guidance for an array of SMPs that offer design solutions for many different types of sites. Determine if a project is regulated under the Stormwater Regulations and, if so, what specific requirements need to be met; Learn about new ways to incorporate green approaches to stormwater management that provide benefits for Development and Stormwater Retrofit projects and expedite the stormwater approval process; Design specific stormwater management practices (SMPs) to meet PWD’s standards; Prepare and submit application materials; Learn how to ensure proper installation and protection of SMPs during construction activity; and. Figure 1: Effects of Urbanization on the Hydrologic Cycle. Stormwater Grants. Implementing CSO control and Municipal Separate Stormwater Sewer Systems (MS4) permit programs (descriptions below), Reducing the quantity of sediment to Wissahickon Creek to under the siltation Total Maximum Daily Load, Investing in identifying and reducing major potential sources of contamination, including stormwater runoff, which could affect the drinking water supply, Reducing the amount of pollutants entering Philadelphia’s source waters and treatment facilities through implementation of the Stormwater Regulations, Requiring that development activities comply with the Stormwater Regulations and other measurable benchmarks, Aligning Stormwater Regulations with Act 167 Plan requirements for local waterways, Implementing public water quality improvement projects such as SMPs and stream restoration projects, Implementing illicit discharge elimination programs, Implementing public outreach and education programs, Regulating development and Industrial dischargers, Monitoring industrial and commercial dischargers, Implementing green stormwater practices, wastewater upgrades, and other improvements through. Using the website, the applicant can access technical resources, such as process flow charts, Standard Details, the Online Technical Worksheet, and informational fact sheets. As design, submittal, and review processes are closely related, the applicant will find cross-referencing throughout the Manual, particularly between Chapters 2 and 3. 3.2 Stormwater Management Design. For the Conceptual Review Phase, PWD strives to review all complete Conceptual Review Phase Submission Packages within five calendar days. Land development activities, such as the construction of new buildings, roads, driveways, and parking lots, can lead to increased stormwater runoff and pollution. This site provides information to private-landowners who want to retrofit their property with stormwater management practices. Table 2 provides an overview of the many State and Federal laws that require PWD to work toward cleaning up Philadelphia’s waterways. Learn More. 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