1. The ONLY thing that is allowed to enter a storm drain is RAINwater. Prevent any other materials from entering storm drains or surface waters. 2. In areas of immediate work, install pollution prevention BMPs (silt socks, silt fences, hay bales, etc.) prior to conducting drilling activities.
Are stormwater management practices that are already being used appropriate?
Vegetation planted as a buffer along the water’s edge to filter stormwater runoff and remove contaminants and soil particles before they reach surface waters. Filter strips can be particularly effective at removing pollutants that are in the form of large particles, such as paint chips.
Where can I find more information about stormwater pollution prevention?
Stormwater Pollution Prevention Manual King County Stormwater Services 170 July 2021. Water Quality Treatment BMPs. Water quality treatment BMP options may be required if operational or basic structural source controls do not adequately address pollutant discharges from your site. Source control BMPs, as presented in Chapter Three, must always be implemented before …
What is the stormwater pollution prevention manual?
Adopting a Stormwater Pollution Prevention Ordinance. Implementation of Best Management Practices on City construction and maintenance activities. Providing employee training for all relevant City employees to ensure awareness and use of …
Is the list of BMPs in the MS4 fact sheets comprehensive?
What are some examples of BMPs?
Urban BMPs can be implemented to help reduce pollution in our local water bodies:Use Fertilizers Wisely.Apply Pesticides Wisely.Use Landscaping Practices that Prevent Erosion.Wash Your Vehicle Wisely.Dispose of Pet Waste.Use and Dispose of Household Chemicals Safely.Evaluate Existing Roads.Proper Planning of Roads.More items...
How do BMPs protect water quality?
Generally BMPs focus on water quality problems caused by increased impervious surfaces from land development. BMPs are designed to reduce stormwater volume, peak flows, and/or nonpoint source pollution through evapotranspiration, infiltration, detention, and filtration or biological and chemical actions.
What is the solution to storm water pollution?
Reduce impervious surfaces at home and increase the vegetated land cover of your property. Impervious surfaces include your roof, driveway, patios and lawn. Reduce rooftop runoff by directing your downspouts to vegetated areas, and not to the storm drain on your street.Jul 5, 2016
What are BMPs used for?
BMPs are structural, vegetative or managerial practices used to treat, prevent or reduce water pollution. Extended Detention Ponds. Instead of flowing directly to a river, stormwater can be transported to a deten- tion pond. These ponds hold the water until pollutants settle to the bottom.
What are the two main types of BMPs?
There are two main types of best management practices (BMPs): structural and non-structural. Structural BMPs are designed to remove pollutants from stormwater runoff or reduce the volume of stormwater runoff.
What are 3 best management practices for water quality?
Best Management PracticesMonitoring and Education.Sanitary Fixtures and Laundry.Kitchen Equipment.Outdoor Water Use.Mechanical Systems.Laboratory and Medical Equipment.Alternative Water Sources.Aug 4, 2021
How is runoff controlled?
Part 2 Some ways to help control runoff are preventing soil erosion, providing basement flood protection, landscaping, providing proper roof drainage, and minimizing paved surfaces.
Why is it important to prevent stormwater pollution?
Effective stormwater management reduces the amount of runoff and runoff pollution by slowing runoff and allow- ing it to soak in. When stormwater stays close to where it falls, less soil erosion occurs and fewer pollutants are car- ried to surface water.
How builder can control pollution of stormwater drains?
Ways to prevent stormwater pollution on your building siteInclude stormwater pollution in your site management plan.Stop erosion and sediment escaping your building site.Protect stockpiles of sand, gravel, topsoil and mulch. ... Keep mud off the road and site, and keep litter contained.More items...
What are BMPs in construction?
Best Management Practice (BMP) A BMP is a method used to prevent or control stormwater runoff and the discharge of pollutants, including sediment, into local waterbodies. Silt fences, inlet protection, and site-stabilization techniques are typical BMPs on a construction site.
When were BMPs created?
First released in October 2000, the menu of BMPs is based on the stormwater Phase II rule's six minimum control measures. EPA has found the practices listed in the menu of BMPs to be representative of the types of practices that can successfully achieve the minimum control measures.Oct 11, 2021
Why do we need dry wells?
This, in turn, may help eliminate the need for other stormwater management measures or reduce the size needed. Because they normally collect relatively clean water, they can provide good quality groundwater recharge.
What is required to maintain dense vegetation?
Reseeding, watering, fertilization and some mowing may be required to maintain the necessary dense growth of vegetation. Annual inspections should be conducted and rills, gullies and channels repaired as soon as possible.
Why is vegetation planted along the water's edge?
Vegetation planted as a buffer along the water’s edge to filter stormwater runoff and remove contaminants and soil particles before they reach surface waters. Filter strips can be particularly effective at removing pollutants that are in the form of large particles, such as paint chips.
How wide should a filter strip be?
Filter strips must be a minimum of 20 feet wide to be effective. Wider strips are better in terms of filtering sediment and pollutants. Filter strips are most effective on slopes of 5 percent or less and will not function well on slopes greater than 15 percent. Steeper slopes require wider strips. As a rule of thumb, an additional 4 feet of width should be added for each additional one percent of slope.
Why are trenches important for marinas?
Helps prevent pollutants from entering waterways, protecting water quality and keeping sediments in the marina basin free from contaminants that may impact future dredging operations. Properly designed and maintained, trenches can provide effective treatment for dissolved pollutants as well as particulate matter. Relatively easy to fit into margins and around perimeters of developed areas with limited space like marinas.
What is a vegetated channel?
A vegetated channel that looks similar to but is wider than a ditch, with a gentle slope designed to transport and treat stormwater runoff. Vegetated swales are also sometimes called “biofilter” swales and are commonly used as a substitute for curb and gutter systems.
How much does it cost to plant sod in a storm?
Filter strips are one of the least expensive stormwater runoff control measures you can implement. Seeding costs can range from $20 to $100 per 1,000 square feet with sod costing $125 per 1,000 square feet ($0.40 to $6.25 per linear foot for a 20- to 50-foot wide strip) depending on site conditions.