2008 city of portland stormwater management manual

The stormwater management manual swmm allows the city of portland to protect both watershed resources and infrastructure investments with every development or improvement. Eugenes stormwater management manual july 2008 was adopted concurrent with the ordinance for stormwater development standards for designing, operating and maintaining approved stormwater facilities. Stormwater management is a toolbox of methods used to improve water quality and reduce the quantity and rate of stormwater runoff to protect streams, aquatic life and human health. The guidelines in this manual shall be used in the development of erosion and sedimentation control plans required for submittal to the city and borough of juneau. All properties with impervious surfaces generate stormwater runoff. Stormwater quality design manual for the sacramento region july 2018 page 41 chapter 4. Rain washes over these hard surfaces and becomes stormwater. The city of south portland must comply with state and federal regulations to reduce the harmful effects of stormwater runoff. From january 2, 2014 project designers had the option of using the 2008. There is a direct link between stormwater runoff and the city s surface and ground water quality and quantity. Portland s investments in stormwater projects and programs are in response to these regulations as well as our local goals. In a natural environment, soil and plants would absorb most of that. As of january 2, 2014 project designers have the option of using the 2008 stormwater management manual or the 2014 swmm. A soakage trench is a shallow trench in permeable soil that is backfilled with sand and coarse stone, and lined with filter fabric.

This manual of stormwater best management practices supports the city and borough of juneaus cbjs building regulations excavation and grading code 19. In general, greater amounts of impervious surfaces result in greater volumes of stormwater and more potential pollutants. Resources and references this appendix provides references for city program and regulations relating to the design, construction, permitting and maintenance of stormwater management and conveyance facilities. The portland manual is the result of significant investment, research. Our stormwater regulations protect people, property, and the environment from damage caused by stormwater runoff. Environmental services revises the stormwater management manual to meet current regulatory requirements and to provide current technical standards.

Page 1 of 3 updated 2122016 property owner responsibilities for stormwater management facilities in the city of portland did you know that since 1999 the city of portland has required the building and maintenance of. City of south portland stormwater management program. Stormwater management is a key element in maintaining and enhancing livability within the city of oregon city city. Examples of approved stormwater management facilities include landscaped swales, stormwater planters, vegetative filters, and landscape or underground infiltration. The city has adopted the 2008 city of portland stormwater management manual as the design manual of bmp design.

Eugenes stormwater management manual is a modified version of portlands stormwater management manual. The portland manual is the result of significant investment, research, and field testing and is a valuable resource for other communities and agencies in the state. The 2016 stormwater code and manual became effective on january 1, 2016. Source control measures source control principles source control measures are designed to prevent pollutants from contacting site runoff, leaving the. As each project meets the requirements of this manual, it will contribute to achieving these important citywide goals. The swmp is the proposed swmp submitted with the npdes permit reapplication and amendment received by the department on august. The organic mulch layer prevents soil bed erosion and retains moisture for plant roots. Planycs water quality goal is to improve public access to our. The city of portland offers several ways to pay your bill.

Environmental services manages the city s 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. Our stormwater codes also satisfy the city s obligation to comply with our municipal stormwater discharge national pollutant discharge elimination system. Examples of green stormwater management permeable paving for infiltration. Environmental services provides city of portland residents with clean river programs, including water quality protection, wastewater collection and treatment, and sewer installation.

From city of portland 2004 stormwater management manual. As design standards for stormwater quality, the city engineer will accept stormwater quality facilities designed pursuant to the policies and procedures of the city of portland bureau of environmental services bes i n its stormwater management manual. Portland s stormwater management manual is an example of a thorough document with policy and design requirements developed for a municipality west of the cascades. Project designers have the option of using the 2008 stormwater management manual or the 2014 manual until april. In response to these regulations, the city established stormwater management performance standards in april 2009 and more recently was awarded funding from casco bay estuary partnership develop a webbased stormwater management manual. Stormwater division objective oregon city provides a safe and reliable stormwater system and implements watershed protection and restoration actions that consistently promote surface water quality and stream health. Stormwater facility science the surface area of a typical stormwater facility allows runoff to pond and evaporate while sediments settle into a layer of mulch.

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. The goal of this stormwater management manual is to protect water quality, reduce stormwater volumes to below a threshold that negatively impact streams, and provide other standards that meet the intent of requirements from deq and relevant city policies and goals. Stormwater regulations and permits the city of portland. Inka bajandas in architecture and engineering january 16, 2014 12.

Stormwater is rain or snow melt that runs over impervious surfaces such as streets, parking lots, driveways, and roof tops. City of portland stormwater management manual august 2016 c1 appendix c. Property owner responsibilities for stormwater management. New york state stormwater management design manual references cerrelli, g. Official website for the city of sandy, oregon stormwater. 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. We were originally richland station, named for the railroad depot erected here for the thennew louisville and nashville railroad, with its first scheduled stop in the small settlement on october 31, 1859. Portland is known for the rain we receive 37 inches of rain in an average year. Posts about stormwater written by city of portland, tn. Water from rooftops is diverted into the trench, where pollutants are filtered from the water and groundwater is recharged through infiltration. Official website for the city of sandy, oregon sand filters. The swmps and any departmentapproved amendments thereto, are hereby incorporated into the permit by reference.

Stormwater and grading design standards city of oregon city. Stormwater management the city of portland, oregon. Beginning on april 2, 2014, project designers must use the 2014 swmm. See the portland stormwater management manual for a more comprehensive list of appropriate plants. Environmental services revises the stormwater management manual to. This sustainable stormwater management plan is a key initiative of planyc, the city s plan for a greener, greater new york. City stormwater management manual updated daily journal. But in the city, streets, buildings and parking lots cover the ground. Urban stormwater management rebecca leonardson rui teles brooke ray smith. The city requires all new developments to treat and detain stormwater from the 2, 5, 10 and 25 year storm events to predevelopment conditions, as defined in the city of portland stormwater management manual. Sand filters, like planter boxes, are structural reservoirs that filter pollutants from stormwater and slow water runoff. Use this pdf to track your time and work pdf document, 2kb category.

Infiltration sand filters allow water to infiltrate through the sand and into the ground. Stormwater management manual the city of portland, oregon. Stormwater manual table of contents minnesota welcome to the minnesota stormwater manual website. Environmental services completed revising the stormwater management manual in 20 to meet current regulatory requirements and recently adopted policies. The city of portland adopted the revised swmm on january 2, 2014. The stormwater management manual swmm provides policy and design requirements for stormwater management throughout the city of portland. Update to the stormwater management manual city green.