Erosion and Sediment Pollution Control Program Manual.pdf

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THE PRINCIPAL SPILLWAY RISER(S) SHOULD HAVE A TRASH RACK AND AN ANTI-VORTEX DEVICE. Standard Construction Detail # 7-5 is an acceptable version of a trash rack and anti-vortex device. Other designs that adequately prevent floating debris from plugging the riser and minimize the effects of swirling of water entering the top of the riser may also be approved. The principal spillway riser should be securely anchored and attached to the outlet barrel with a watertight seal (Standard Construction Details # 7-7 and # 7-9). Table 7.4 may be used to determine the minimum amount of concrete to anchor risers of typical diameter. Adapted from PennDOT Pub.RC-72M STANDARD CONSTRUCTION DETAIL # 7-5 Trash Rack and Anti-vortex Device 363-2134-008 / March 31, 2012 / Page 180
PA DEP STANDARD CONSTRUCTION DETAIL # 7-6 Sediment Basin Embankment and Spillway Details - Perforated Riser NOTE: This table is intentionally blank and should be filled in by the plan preparer. BASIN NO. Z1 (FT) Z2 (FT) TOP ELEV ETE (FT) TEMPORARY RISER BARREL DIA TRd (IN) EMBANKMENT TOP WIDTH Etw (FT) CREST ELEV TRCE (FT) MAT’L KEY TRENCH DEPTH (FT) DIA Bd (IN) KEY TRENCH WIDTH (FT) INLET ELEV BIE (FT) MAT’L CLEANOUT ELEV COE (FT) 363-2134-008 / March 31, 2012 / Page 181 LENGTH BI (FT) BOTTOM ELEV BE (FT) OUTLET ELEV BOE (FT) *Also refer to sediment basin temporary riser, emergency spillway, energy dissipater, trash rack and anti-vortex device, and sediment storage dewatering facility details. Sediment basins, including all appurtenant works, shall be constructed to the detail and dimensions shown on the E&S plan drawings. Area under embankment shall be cleared, grubbed, and stripped of topsoil to a depth of two feet prior to any placement and compaction of earthen fill. Fill material for the embankments shall be free of roots, or other woody vegetation, organic material, large stones, and other objectionable materials. The embankment shall be compacted in layered lifts of not more than 6” to 9”. The maximum rock size shall be no greater than 2/3 the lift thickness. Upon completion, the embankment shall be seeded and mulched or otherwise stabilized according to the specifications of the E&S plan drawings. Trees shall not be planted on the embankment. Access shall be provided for sediment removal and other required maintenance activities. A clean out stake shall be placed near the center of each basin. Accumulated sediment shall be removed when it has reached the clean out elevation on the stake and restore the basin to its original dimensions. Dispose of materials removed from the basin in the manner described in the E&S plan. Inspect all sediment basins on at least a weekly basis and after each runoff event. Check basin embankments, spillways, and outlets for erosion, piping and settlement. Necessary repairs shall be made immediately. Displaced riprap within the outlet energy dissipater shall be
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EROSION AND SEDIMENT POLLUTION CONT
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FOREWORD The various Best Managemen
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TABLE OF CONTENTS Page Foreword ...
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Waterbars .........................
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Table Number Name Page 11.4 Recomme
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Figure Number Name Page 7.7 Graphic
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STANDARD CONSTRUCTION DETAILS Numbe
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CHECKLISTS, STANDARD E&S WORKSHEETS
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are cases where sheet flow has occu
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is replaced following earthmoving,
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CHAPTER 1 - REQUIRED E&S PLAN CONTE
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topography of the site should be in
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efore earth disturbance occurs with
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is classified as High Quality (HQ)
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install the proposed perimeter BMPs
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detail(s) for the specific BMP. In
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CHAPTER 3 - SITE ACCESS This chapte
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ROCK CONSTRUCTION ENTRANCE WITH WAS
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RUMBLE PAD Pre-constructed rumble p
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3 feet should be avoided wherever p
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WATERBAR - Sediment Removal Efficie
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BROAD-BASED DIP - Sediment Removal
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USDA Forest Service STANDARD CONSTR
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DITCH RELIEF CULVERT (Cross Drains)
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TURNOUT - Sediment Removal Efficien
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STANDARD CONSTRUCTION DETAIL #3-11
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3. Temporary bridges should be inst
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PA DEP STANDARD CONSTRUCTION DETAIL
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WETLAND CROSSING Wetland crossings
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Adapted from PA DEP GP-8 FIGURE 3.8
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FIGURE 3.10 Rigid or Flexible Pipe
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PA DEP FIGURE 3.12 In-stream Coffer
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EARTHWORK WITHIN LAKES AND PONDS NO
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FIGURE 3.15 Turbidity Barrier Insta
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DEWATERING WORK AREAS - Wherever wa
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(Additional Notes for Standard Cons
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SITE HOUSEKEEPING AND MATERIALS MAN
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Prefabricated Washout Containers Ca
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CHAPTER 4 - SEDIMENT BARRIERS AND F
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The maximum slope length above a co
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STANDARD CONSTRUCTION DETAIL #4-1 C
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COMPOST FILTER BERM - Sediment Remo
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Installation - Compost filter berms
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STANDARD CONSTRUCTION DETAIL # 4-4
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ROCK FILTER OUTLET - Sediment Remov
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York County Conservation District 3
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Wherever there is a break or change
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A chain link fence should be instal
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SEDIMENT FILTER LOG (FIBER LOG) - S
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WOOD CHIP FILTER BERM - Sediment Re
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STRAW BALE BARRIER - Sediment Remov
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NRCS FIGURE 4.4 Straw Bale Barrier
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A one foot thick layer of AASHTO #5
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The total width of the filter strip
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INLET FILTER BAG - Sediment Removal
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Adapted from Maine DEP Maximum drai
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TABLE 5.1 Pennsylvania Rainfall by
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LAND USE < 2% TABLE 5.2 Runoff Coef
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TR-55 Shallow Concentrated Flow Tha
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Figure 5.2 - RAINFALL REGION MAP A
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Figure 5.6 - RAINFALL REGION MAP E
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TABLE 5.6 5-Minute through 24-Hour
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TABLE 5.8 5-Minute through 24-Hour
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Drainage Area (A) - Determine the d
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Determination of Time of Concentrat
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CHAPTER 6 - RUNOFF CONVEYANCE BMPs
Page 149 and 150: DESIGN PROCEDURE 1. Calculate the r
Page 151 and 152: TABLE 6.3 Manning’s “n” for T
Page 153 and 154: National Technical Information Serv
Page 155 and 156: TABLE 6.6 Riprap Gradation, Filter
Page 157 and 158: TABLE 6.9 Recommended n Values to b
Page 159 and 160: TABLE 6.10 Maximum Permissible Velo
Page 161 and 162: It should be noted that Guernsey si
Page 163 and 164: Channel #1 (Diversion Channel) on W
Page 165 and 166: Channel #1 Segments “A” and “
Page 167 and 168: No more than one third of the shoot
Page 169 and 170: Stackhouse Bensinger, Inc. STANDARD
Page 171 and 172: Adapted from North Carolina DENR ST
Page 173 and 174: TEMPORARY SLOPE PIPE - Temporary sl
Page 175 and 176: STANDARD CONSTRUCTION DETAIL # 6-5
Page 177 and 178: BENCH - Benches (a.k.a. gradient te
Page 179 and 180: CHAPTER 7 - SEDIMENT BASINS DESIGN
Page 181 and 182: 14. The discharge from a sediment b
Page 183 and 184: Adapted from VA SWCC PA DEP FIGURE
Page 185 and 186: Develop a Stage Storage Curve. Use
Page 187 and 188: STANDARD CONSTRUCTION DETAIL # 7-1
Page 189 and 190: Sediment shall be removed from the
Page 191 and 192: PA DEP STANDARD CONSTRUCTION DETAIL
Page 193 and 194: FIGURE 7.2 Skimmer Orifice Design C
Page 195 and 196: The principal spillway should be an
Page 197 and 198: Adapted from USDA, NRCS FIGURE 7.3
Page 199: H TABLE 7.3 - PIPE FLOW CAPACITY n
Page 207 and 208: TABLE 7.4 Concrete Base Requirement
Page 209 and 210: Embedded section of aluminum or alu
Page 211 and 212: Wherever total basin dewatering is
Page 215 and 216: Riprap at toe of embankment shall b
Page 217 and 218: Head TABLE 7.6 - GRASS-LINED EMERGE
Page 219 and 220: 4. Once the depth of flow through t
Page 223 and 224: Anti-seep Collar Wherever soils sus
Page 225 and 226: 4. The maximum spacing between coll
Page 227 and 228: Adapted from PennDOT RC-70 STANDARD
Page 229 and 230: FILTER DIAPHRAGM Filter diaphragms
Page 231 and 232: Sediment Storage Zone Dewatering Pr
Page 233 and 234: 4. Greater surface area increases t
Page 237 and 238: Barrel/Riser Sediment Trap - This d
Page 239 and 240: Accumulated sediment shall be remov
Page 243 and 244: Wherever total trap dewatering is r
Page 245 and 246: At a minimum, outlet protection sho
Page 249 and 250: CHAPTER 9 - OUTLET PROTECTION As a
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FIGURE 9.1 Velocity Adjustment Nomo
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endwall. For discharges directly in
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Adapted from USDA NRCS STANDARD CON
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Adapted from USDA - NRCS FIGURE 9.3
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Determine whether maximum or minimu
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Adapted from ScourStop FIGURE 9.5 T
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STILLING BASIN (Plunge Pool) - Stil
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Adapted from USDOT, FHWA HEC 14 FIG
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Using the pipe slope (V:H) determin
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ENERGY DISSIPATER Energy dissipater
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EARTHEN LEVEL SPREADER LOCATION - E
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STRUCTURAL LEVEL SPREADER LOCATION
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The E&S plan should include such in
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Wherever the slope parallels the ro
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VA SWCC FIGURE 11.1 Stair Step Grad
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TOPSOIL APPLICATION Graded areas sh
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Site conditions such as soil limita
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Species Warm-Season Grasses Deerton
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6. Use only in extreme southeastern
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Synthetic binders, or chemical bind
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EROSION CONTROL BLANKETS - There ar
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HYDRAULICALLY APPLIED BLANKETS Hydr
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PAM Specifications Anionic PAM mixt
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Adapted from VA DSWC FIGURE 11.5 So
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City of Portland, BDS FIGURE 11.6 T
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CHAPTER 13 - UTILITY LINE PROJECTS
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more viable. HDD may be considered
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STANDARD CONSTRUCTION DETAIL #13-1
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PA DEP FIGURE 13.1 Waterbar Install
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The following points should be cons
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SKID ROADS AND SKID TRAILS The prim
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The diversion channel should have a
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PA Timber Harvesting Packet FIGURE
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CHAPTER 15 - STREAMBANK STABILIZATI
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Figure 15.1 Riprap Streambank Prote
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GABIONS and Reno mattress have been
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PA DEP FIGURE 15.4 Reno Mattress St
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Adapted from VA DSWC FIGURE 15.5 Gr
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MISCELLANEOUS HARD ARMOR TECHNIQUES
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Natural colonization by surrounding
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INSTALLATION GUIDELINES Prepare the
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Branchpacking is the alternating of
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Fabric encapsulated soil is often u
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Fiber rolls, or coir logs, are cyli
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CHAPTER 16 - GRADING STANDARDS PA D
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CHAPTER 17 - AREAS OF SPECIAL CONCE
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Adapted from USDA NRCS FIGURE 17.2
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Adapted from USDA NRCS FIGURE 17.4
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enter the Act 2 Program, which is a
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No RECOMMENDED PROCESS FOR SITES WI
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Common Contaminants of Concern: Two
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Structural (Stabilization) Erosion
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ii. The siting and function of any
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SPECIAL PROTECTION WATERSHEDS Sourc
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impacts, including suitability of g
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SLOPE FAILURES PA DEP The Problem I
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TABLE 17.1 PROCESSES LEADING TO LAN
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GEOTHERMAL WELL DRILLING Source Unk
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Well (or Total Well Field) Flows Gr
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Project: COMPLETE PLAN CHECKLIST A.
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STANDARD E&S CONTROL PLAN TECHNICAL
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“A maintenance program, which pro
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Complies Deficient N/A Hydric soils
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Complies Deficient N/A Removal of t
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Complies Deficient N/A Standard E&S
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Sediment Traps (Chapter 8) Complies
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Permanent Stabilization Topsoil rep
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APPENDIX B - STANDARD E&S WORKSHEET
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STANDARD E&S WORKSHEET #2 Compost F
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STANDARD E&S WORKSHEET # 4 Reinforc
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STANDARD E&S WORKSHEET # 6 Super Si
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STANDARD E&S WORKSHEET # 8 Rock Fil
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STANDARD E&S WORKSHEET # 10 Rationa
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STANDARD E&S WORKSHEET # 12 Sedimen
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E L E V A T I O N (FT) STANDARD E&S
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STANDARD E&S WORKSHEET # 16 Sedimen
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BASIN NO. TEMP. OR PERM. Y (FT) Z S
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STANDARD E&S WORKSHEET # 20 Riprap
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STANDARD E&S WORKSHEET # 22 PLAN PR
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15. Until the site is stabilized, a
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APPENDIX D - STANDARDS FOR MAPS AND
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PLAN DRAWINGS Each bit of informati
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e carefully preserved and stored fo
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SOIL NAME CUTBANKS CAVE CORROSIVE T
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ROUGHNESS ELEMENT DISSIPATER - This
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2. Determine Discharge Velocity (VO
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From Figure F.8, VA/VO = 1.05 VA =
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Yo / D FIGURE F.4 Dimensionless Rat
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USDOT, FHWA HEC 14 FIGURE F.6 Flow
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FIGURE F.8 Average Velocity in Abru
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FIGURE F.10 Average Depth for Abrup
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FIGURE F.12 Riprap Size for Use Dow
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EXAMPLE - Given: Circular Concrete
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USDOT, FHWA HEC 14 FIGURE F.14 Impa
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designed to discharge all anticipat
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Figure G.1. Convex Contours and Slo
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Figure G.2. Turf Reinforcement Mat
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c. For subsurface discharge level s
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asin/trap, it should be off-line du
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Design to Avoid Downstream Erosion
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Down Slope Ground Cover Table G.2.
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VIII. OUTFALL DESIGN As previously
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Figure G.10. Rill/Gully Repair Figu
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X. SELECTED REFERENCES Pennsylvania
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APPENDIX H - DUST CONTROL Descripti
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Table H.2. Adhesives Used for Dust
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Tree Health Preserving trees is not
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can have blocky aggregates. They ha
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Site Characteristics—Site charact
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Identify trees in need of care In t
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363-2134-008 / March 31, 2012 / Pag
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Use accurate information. The plan
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The transplanting process requires
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Protecting Trees During Constructio
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geotextile. The plastic core is mad
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Retain a qualified arborist to perf
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Repairing Construction Injury The m
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Tree Techniques Tree injury Tree li
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Improve the aeration and drainage o
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1995. Tree-Pruning Guidelines. (Gui
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APPENDIX J - Publication: “Unders
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ions such as calcium, magnesium, an
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Soil Structure Is Destroyed by Comp
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compaction in decent, fertile soils
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A Note on Organic Materials and Ame
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Final Strategies for Dealing with C
Page 515 and 516:
This publication is available from
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363-2134-008 / March 31, 2012 / Pag
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Aeration -----Mixing water with air
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Aquiclude -----A geologic formation
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Bedrock----- The more or less solid
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C-Horizon -----A layer of unconsoli
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Clay -----A fine-grained cohesive s
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Where: Q = Flow volume (cfs) V = Fl
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Cut and Cover -----A method of tren
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Diabase -----A rock of basaltic com
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E&S Plan -----Erosion and Sediment
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E&S Plan -----A site-specific plan
Page 539 and 540:
Filter Fabric Fence -----A sediment
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Frost Action (Soils) -----The likel
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Grade -----1. The slope of a road o
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Holding Structure -----Any excavati
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Inlet Protection -----Type of BMP u
Page 549 and 550:
Level Spreader -----An earthen or m
Page 551 and 552:
Mesic -----Refers to environmental
Page 553 and 554:
NOI -----Notice of Intent Nominal S
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Organic Soil -----Soil composed pre
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Percolation Test -----A measure of
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Pollutant -----Any contaminant or o
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Range -----The geographic region in
Page 563 and 564:
stabilization; cutting of existing
Page 565 and 566:
Section 404 ----The section of the
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Slope Protection -----A layer or fa
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Stable Channel Flow -----Channel fl
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stabilization techniques that consi
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Terrace -----An earthen embankment
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Trench Plug -----A flow obstruction
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Vernal Pool -----Wetlands that occu
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Y Yellowboy -----Iron oxide deposit
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26. Filtrexx, Standard Specificatio
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86. USEPA, National Pollutant Disch
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