Volume 2-05, Chapter 3 - City of Wichita

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Section 3.2.8 - Surface Sand Filter F. EMERGENCY SPILLWAY • An emergency or bypass spillway must be included in the surface sand filter to safely pass flows that exceed the water quality design flows. The spillway prevents filter water levels from overtopping the embankment and causing structural damage. Figure 3-30 Typical Sand Filter Media Cross Sections (Source: Claytor and Schueler, 1996) G. MAINTENANCE ACCESS • The local jurisdiction may require that the facility be placed in a reserve and/or establishment of a drainage easement the facility, which is accessible from a public road or other accessible easement. When required, the drainage easement should be at least 20 feet wide, provide a minimum traversable width of 15 feet, have a maximum slope of no more than 10%, and be appropriately stabilized to withstand maintenance equipment and vehicles. Page 3 - 104 Volume 2, Technical Guidance
Section 3.2.8 - Surface Sand Filter H. SAFETY FEATURES • Surface sand filter facilities can be fenced to prevent access. Figure 3-31 Example Surface Sand Filter Perforated Stand-Pipe (Source: Claytor and Schueler, 1996) I. ADDITIONAL SITE-SPECIFIC DESIGN CRITERIA AND ISSUES Physiographic Factors - Local terrain design constraints Low Relief: Use of surface sand filter may be limited by low head. High Relief: Filter bed surface must be level. Karst: Use polyliner or impermeable membrane to seal bottom of earthen surface sand filter or use watertight structure. Volume 2, Technical Guidance Page 3 - 105
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CHAPTER 3 STORMWATER CONTROLS TABLE
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Chapter 3 - Table of Contents 3.2.8
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Chapter 3 - Table of Contents LIST
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Section 3.1 - Stormwater Management
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Section 3.2.1 - Stormwater Pond 3.2
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Section 3.2.1 - Stormwater Pond Fig
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Section 3.2.1 - Stormwater Pond For
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Section 3.2.1 - Stormwater Pond •
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Section 3.2.1 - Stormwater Pond 1'
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Section 3.2.1 - Stormwater Pond 3.2
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Section 3.2.1 - Stormwater Pond Ste
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Section 3.2.2 - Extended Dry Detent
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Page 59 and 60: Section 3.2.3 - Vegetative Filter S
Page 67 and 68: Section 3.2.4 - Grassed Channel 3.2
Page 73 and 74: Section 3.2.4 - Grassed Channel max
Page 75 and 76: Section 3.2.5 - Enhanced Swale 3.2.
Page 77 and 78: Section 3.2.5 - Enhanced Swale Chan
Page 79 and 80: Section 3.2.5 - Enhanced Swale B. G
Page 81 and 82: Section 3.2.5 - Enhanced Swale High
Page 83 and 84: Section 3.2.5 - Enhanced Swale Side
Page 85 and 86: Section 3.2.5 - Enhanced Swale 3.2.
Page 87 and 88: Section 3.2.6 - Infiltration Trench
Page 99 and 100: Section 3.2.7 - Soakage Trench 3.2.
Page 101 and 102: Section 3.2.7 - Soakage Trench •
Page 103 and 104: Section 3.2.8 - Surface Sand Filter
Page 109: Section 3.2.8 - Surface Sand Filter
Page 117 and 118: Section 3.2.9 - Bioretention Areas
Page 133 and 134: Section 3.2.10 - Stormwater Wetland
Page 151 and 152: Section 3.3 - Secondary TSS Treatme
Page 153 and 154: Section 3.3.1 - Proprietary Treatme
Page 155 and 156: Section 3.3.1 - Proprietary Treatme
Page 157 and 158: Section 3.3.2 - Gravity (Oil-Water)
Page 159 and 160: Section 3.3.2 - Gravity (Oil-Water)
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Section 3.3.2 - Gravity (Oil-Water)
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Section 3.3.3 - Alum Treatment 3.3.
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Section 3.3.3 - Alum Treatment •
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Section 3.3.4 - Underground Sand Fi
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Section 3.3.5 - Organic Filter 3.3.
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Section 3.3.5 - Organic Filter •
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Section 3.4 - Other Stormwater Mana
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Section 3.4.1 - Conventional Dry De
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Section 3.4.2 - Underground Dry Det
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Section 3.4.3 - Porous Pavement 3.4
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Section 3.4.3 - Porous Pavement The
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Section 3.4.3 - Porous Pavement com
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Section 3.4.3 - Porous Pavement Fig
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Section 3.4.4 - Modular Porous Pave
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Section 3.4.5 - Green Roof 3.4.5 Gr
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Section 3.4.5 - Green Roof Signific
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Section 3.4.5 - Green Roof 3.4.5.3
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Volume 2-05, Chapter 3 - City of Wichita

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