As of november 21, 2016, project designers must use the 2016 swmm. Portlands municipal stormwater permit the city of portland. Stormwater regulations and permits the city of portland. Link to 2014 stormwater management manual the city of portland adopted a source. Chapters 17 the stormwater management process begins at the local level. The citys federal municipal stormwater permit also called ms4 requires portland to reduce stormwater pollution, and manage other programs that respond to water quality requirements. The objective of this manual is to provide guidance on the measures necessary to control the quantity and quality of stormwater produced by new development and redevelopment, such that they comply with water quality standards and contribute to. The manual provides information on selecting, designing, and installing best management practices bmps for stormwater management in the state of maine. As of january 2, 2014 project designers have the option of using the 2008 stormwater management manual or the 2014 swmm. All projects that propose onsite infiltration must evaluate existing site conditions and.
It is referred to as the npdes permit, ms4 permit, or municipal stormwater permit. Any person, company, or agency that applies for a permit through the city of portland. Education about stormwater management, and who is responsible for managing stormwater is critical. The city of portland adopted the revised swmm on january 2, 2014. This is the december 2014 version of the stormwater management manual for western washington swmmww. The city of tacoma regularly updates its stormwater management manual previously called the surface water management manual to comply with the most recent national pollutant discharge elimination system npdes permit, to clarify information and to incorporate updated policies. Stormwater manuals washington state department of ecology.
Maine dep has developed this manual to provide professional engineers, developers, and municipalities with information to improve the management of stormwater and its impacts. In accordance with stormwater management manual requirements, approved permits for approximately 1,391 source control measures at sites with highrisk characteristics or activities. Post construction stormwater management 4 june 2014 3. Environmental services coordinates the citys response to the federal permit, which covers stormwater drainage from about 15,500 acres of portland s land area. North carolina department of environmental quality. Official website for the city of sandy, oregon grassy swales. As each project meets the requirements of this manual. The 15hour, stormwater management for oil and gas construction activities online certificate program is comprised of seven 7 courses and corresponding exams. What are some examples of different types of stormwater management facilities. North carolina department of environment and natural resources.
Anyone within the local community could start the process by asking municipal or county planning. As portland grows, the city works to accommodate growth and commerce while maintaining clean rivers. Revision filed for inclusion in ppd september 29, 2004. Please fill out all required fields before submitting your information. How does one start the stormwater management process. Environmental services provides city of portland residents with clean river programs, including water quality protection, wastewater collection and treatment, and sewer installation. It serves as a supplement to state and federal design manuals that govern stormwater management design including the following. The stormwater management manual swmm allows the city of portland to protect both watershed resources and infrastructure investments with every development or improvement. The requirements in the manual apply to all development, redevelopment, and improvement projects within the city of portland on private and public property and in the public rightofway. Reflections on oswego lake, francie manning, 2014 lake. Updated references to city stormwater management manual. Continued to implement the stormwater management facility maintenance inspection program mip for private stormwater management facilities.
Our stormwater manuals provide stormwater permit implementation and management guidance. Publications currently available pertaining to stormwater, erosion and sediment control, and the chesapeake bay preservation act are listed on this page. City of portland stormwater management manual august 2016 definitions 1 definitions definitions note. To properly size and locate stormwater management facilities, it is necessary to characterize the soil infiltration conditions at the location of the proposed facility.
Msma a new urban stormwater management manual for malaysia. Portland stormwater management manual january 2014 appendix f. City of portland bes stormwater management manual 2004 seed. For the 2004 stormwater management manual for eastern washington, click here. As of november 21, 2016, project designers must use the 2016 source control manual, if applicable. Consistent attainment of benchmarks may be based on samples collected during the 20102014 permit cycle. Deq issued the final thirdterm permit on january 31, 2011. Portland, or 2004 stormwater management manual subtract impervious cover under trees within 25 feet of impervious cover that meets certain criteria existing tree 50% of existing canopy, new trees 100 to 200 ft2 of impervious cover indianapolis, in 2007 stormwater green infrastructure supplemental document. You can use the links on this page to access the manual or pick up a free compact disc. In addition to the annual inspections, the virginia stormwater management program and regulations require a stormwater.
A stormwater management facility is a physical system or structure that controls the quantity andor quality of stormwater before it is released to surface waters. This credentialing program is a problemcentered curriculum which covers conditions commonly encountered during oil and gas construction activities pertinent for stormwater management. This manual was developed to assist communities, watershed groups, individuals, engineers, and developers in understanding stormwater impacts and to select appropriate best management practices bmps to manage stormwater from development, in accordance with the maine deps chapter 500 stormwater management rules. Environmental services manages the citys stormwater system and works with residents, businesses and property owners to reduce stormwater pollution, promote private stormwater management and protect our rivers, streams and groundwater. Please use this order form for the following publications. Beginning on april 2, 2014, project designers must use the 2014 swmm. City of south portland stormwater manual design specifications rainwater storage and reuse adapted from. Grassy swales, like vegetated swales, are long, narrow, channels that are used to filter and infiltrate stormwater from parking lots, sidewalks, streets, and other impervious surfaces. We advise that facilities look at the new permit and the applicable stormwater management manual and write the swppp as if it were for the first time.
Volumes resulting in treatment of 90% of rainfall volume 2004. The countys remaining primary stormwater management activity in the portland area is associated with five of the willamette river bridges. Stormwater management design manual contains guidance for designers in order to assist them in meeting those requirements. The stormwater management manual swmm provides policy and design requirements for stormwater management throughout the city of portland. The following definitions apply to terms used in this manual and are intended to supplement city code chapters 17. If you have questions or concerns about the stormwater management. Virginia stormwater management handbook, prepared by the. Deq issued the first portland permit in 1995 and renewed it for a second term in 2004 with modifications in 2005. Approved stormwater management manuals proposed swmps must reference an approved stormwater management manual provided in the list below and must be appropriate to the area that the swmp covers, unless approved in writing by deq. The text of the entire manual is available at this link. Stormwater management aims to build on the single objective of conventional stormwater management of local flood protection by having multiple objectives, including improved water quality management, protected ecosystems and liveable, attractive water sensitive cities and communities. Using trees to meet stormwater credit portland, or 2004 stormwater management manual subtract impervious cover under trees within 25 feet of impervious cover that meets certain criteria existing tree 50% of existing canopy, new trees 100 to 200 ft2 of impervious cover indianapolis, in 2007 stormwater green infrastructure supplemental.
New york state stormwater management design manual january, 2015 the new york state stormwater management design manual provides designers with a general overview on how to size, design, select, and locate stormwater management practices at a development site to comply with state stormwater performance standards. Portland stormwater management manual august 1, 2008. Portland manages stormwater as a valuable resource through green infrastructure. An accurate count of washington residents will ensure the fair distribution of political representation and of federal and state resources. Stormwater credit manual for more information about credits available to residents and businesses see the stormwater credit manual. To provide information on the multiple objective approaches. Stormwater management guidance manual for local officials september, 2004 to help localities comply with state and federal stormwater management requirements, the new york state department of environmental conservation and department of state issued the stormwater management guidance manual for local officials. Port of portland stormwater design standards manual.
In the state of oregon, the implementation of the national pollutant discharge elimination system npdes permitting program mandates that any site owner or operator whose construction, industrial and municipal ms4 activities require the discharge of stormwater to surface waters of the state to apply for general permit coverage. Stormwater management is critical to maintaining and enhancing the citys livability and improving watershed health. Lake oswego stormwater management manual city of lake oswego. Pollution controlsedimentation manhole lynchstyle catch basin. City of portland stormwater management manual was adopted by the city of. New york state stormwater management design manual january. Summary of washingtons new industrial stormwater general permit. The city of portland adopted a sourc e control manual previously chapter 4 of the 2014 swmm and it became effective on august 19, 2016. Portland encourages sustainable stormwater management through a. Because maryland has a stormwater management program in place that regulates new development and redevelopment projects, the state considers. Portlands stormwater management manual is an example of a thorough. Reinforce stormwater management hierarchy consolidate policy into chapter 1 move drainage reserves from appendix a. The stormwater management manual is available at bes. Portland stormwater management manual veneta oregon.
Beginning in 2014, the stormwater system is required to have. As each project meets the requirements of this manual, it will contribute to achieving these important citywide goals. This worksheet is to be used in conjunction with the connecticut stormwater quality manual for any new land development. Stormwater management the city of portland, oregon. From city of portland 2004 stormwater management manual. The text of the 2014 stormwater management manual is also available. The city of portland adopted the revised 2016 swmm and it becomes effective on august 19, 2016. To get a credit, a structural control needs to be built and a credit needs to be applied for with the city of portland department of public works. Stormwater management guidance manual for local officials. Proposed stormwater management facilities and treatment must meet or exceed the specifications described per the. Urban stormwater management manual for mala ysia or better known in malaysia by.
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