Control roof rain water runoff
[DOCX File]Homeowner fact sheet: Erosion prevention and sediment …
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The silt fence slows runoff and allows it to puddle or pond, so soil and sediment can settle out before water leaves a site. Other sediment control devices include berms, biologs, and more. Proper installation and maintenance of sediment control devices is essential for their performance.
[DOC File]Water Quality Monitoring for Catch Basin Inserts at Three ...
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Two samples were taken to measure heavy metals in the green roof runoff and the results are shown in Table 7. These indicate the production of copper, lead, and arsenic as the rain water passes through the green roof. This may be caused by the geotextiles or other roofing material that supports the soil and plant matrix on the roof.
Stormwater Management Standards
The discharge of roof runoff to the ground requires pretreatment by means of a BMP capable of removing metals, such as a sand filter, organic filter or filtering biorention area, if the roof is a metal roof that is located in the Zone II or Interim Wellhead Protection Area of a public water …
[DOC File]Green Roofs Proposal for the City of Roanoke
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Rain water runoff decreased. ... Possibly the most valuable function of a green roof is its assistance in stormwater control. The soil and vegetation of the roof intercept runoff by absorbing rainfall, thus naturally managing the amount of possible stormwater. The vegetation on a green roof can also absorb contaminants from rainwater that would ...
[DOCX File]Construction Stormwater Site Inspection Form
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Is the Bioretention and Rain Garden protected against over compaction of construction equipment and foot traffic to retain its infiltration capabilities? Permeable pavements are clean and free of sediment and sediment laden-water runoff.
[DOCX File]Tier 1 Stormwater Control Plan - County of Santa Barbara
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Roof areas collect runoff and route it to the receiving pervious area via gutters and downspouts. Paved areas are sloped so drainage is routed to the receiving pervious area. Runoff is dispersed across the vegetated area (for example, with a splash block) to avoid erosion and promote infiltration.
[DOCX File]1.0 WPCP Requirements - San Diego
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Erosion control, also referred to as soil stabilization, consists of source control measures that are designed to prevent soil particles from being detached and mobilizing in storm water runoff. Erosion control BMPs protect the soil surface by covering and/or binding soil particles and many have the secondary effect of increasing water ...
[DOCX File]Definition - USDA
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When a roof runoff structure is used to protect roof runoff from contamination by manure, design the roof runoff structure to convey the flow rate generated from a 25-year, 5-minute rainfall event. (Refer to Agricultural Waste Management Field Handbook, NEH Part 651. Chapter 10, AWMS Component Design, Appendix 10B, Rainfall Intensity Maps).
[DOC File]Waste Discharge Requirements General Order No
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___improve water trough floats (cage, float type, float setting) ___install hard surface around water troughs ___concrete surfaces under eaves of roof to collect rain runoff ___gutters to collect and control roof runoff from freestall barn(s) ___install ponding controls (grading, piping, basins, pumps,) ___structures to prevent rain run-on ...
Each of the ten MassDEP Stormwater Management Policy ...
The roof area contributing the runoff is not a “Green Roof.” The length of the qualifying pervious area (in feet) shall be equal to or greater than the contributing rooftop area (in ft2) divided by 13.3 (e.g., for 1,000 ft2 roof/13.3 = 75 ft). The width of the qualifying pervious area (in feet) shall be equal to or greater than the roof …
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