Erosion and Sediment Pollution Control Program Manual.pdf

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Accumulated sediment shall be removed and disturbed areas shall be stabilized inside the basin before conversion to a stormwater management facility. The device shown in Standard Construction Detail #7-16 may be used to dewater saturated sediment prior to its removal. Rock filters shall be added as necessary. 363-2134-008 / March 31, 2012 / Page 172
FIGURE 7.2 Skimmer Orifice Design Chart Adapted from Penn State Agricultural and Biological Fact Sheet F-253 Figure 7.2 is for use in designing the orifice plate for the skimmer shown in Standard Construction Detail # 7-1 or # 7-2. It assumes a 2” to 5” head (depending upon the size of the skimmer). The required head for use of Figure 7.2 varies as follows: For a skimmer with a dewatering tube < 2 ½“ diameter, use a 2” head. For a 3” diameter tube, use a 2.5” head; 4” tube, use 3.3” head; 5” tube use 4” head, and 6” diameter tube use 5” head. Find the vertical line representing the basin’s dewatering zone volume. At the intersection of the vertical line with the desired dewatering time, read horizontally to the left to find the required skimmer orifice diameter. Skimmer Orifice Design Example: For a basin with a dewatering volume of 40,000 cubic feet and a desired dewatering time of two days, the required skimmer orifice diameter is 4 inches. Indicate this dimension on the plan drawings (as a note on the typical or in the summary table). There must be a sufficient number of holes in the underside of the water entry unit of the skimmer to allow water to enter freely into the skimmer orifice. The outlet pipe or barrel must be capable of discharging at the rate permitted by the skimmer and in all cases must be equal to or larger in dimension than the orifice diameter. This dimension should also be indicated on the plan drawings. Anti-seep collars are recommended for the barrel. When erodible soils or soils having a high content of fine silts will be disturbed in the drainage area of a sediment basin, longer settling times will result in a higher percentage of suspended solids removal. Therefore, settling times of 4 to 7 days are recommended in such situations. 363-2134-008 / March 31, 2012 / Page 173
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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
Page 141 and 142: TABLE 5.8 5-Minute through 24-Hour
Page 143 and 144: Drainage Area (A) - Determine the d
Page 145 and 146: Determination of Time of Concentrat
Page 147 and 148: 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: PA DEP STANDARD CONSTRUCTION DETAIL
Page 195 and 196: The principal spillway should be an
Page 197 and 198: Adapted from USDA, NRCS FIGURE 7.3
Page 199 and 200: H TABLE 7.3 - PIPE FLOW CAPACITY n
Page 201 and 202: PA DEP STANDARD CONSTRUCTION DETAIL
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
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Wherever total trap dewatering is r
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At a minimum, outlet protection sho
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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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Page 427 and 428:
Page 429 and 430:
Page 431 and 432:
ROUGHNESS ELEMENT DISSIPATER - This
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2. Determine Discharge Velocity (VO
Page 435 and 436:
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
Page 477 and 478:
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
Page 485 and 486:
Use accurate information. The plan
Page 487 and 488:
The transplanting process requires
Page 489 and 490:
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
Page 497 and 498:
Tree Techniques Tree injury Tree li
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Improve the aeration and drainage o
Page 501 and 502:
1995. Tree-Pruning Guidelines. (Gui
Page 503 and 504:
APPENDIX J - Publication: “Unders
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ions such as calcium, magnesium, an
Page 507 and 508:
Soil Structure Is Destroyed by Comp
Page 509 and 510:
compaction in decent, fertile soils
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A Note on Organic Materials and Ame
Page 513 and 514:
Final Strategies for Dealing with C
Page 515 and 516:
This publication is available from
Page 517 and 518:
363-2134-008 / March 31, 2012 / Pag
Page 519 and 520:
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
Page 531 and 532:
Cut and Cover -----A method of tren
Page 533 and 534:
Diabase -----A rock of basaltic com
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E&S Plan -----Erosion and Sediment
Page 537 and 538:
E&S Plan -----A site-specific plan
Page 539 and 540:
Filter Fabric Fence -----A sediment
Page 541 and 542:
Frost Action (Soils) -----The likel
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Grade -----1. The slope of a road o
Page 545 and 546:
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
Page 555 and 556:
Organic Soil -----Soil composed pre
Page 557 and 558:
Percolation Test -----A measure of
Page 559 and 560:
Pollutant -----Any contaminant or o
Page 561 and 562:
Range -----The geographic region in
Page 563 and 564:
stabilization; cutting of existing
Page 565 and 566:
Section 404 ----The section of the
Page 567 and 568:
Slope Protection -----A layer or fa
Page 569 and 570:
Stable Channel Flow -----Channel fl
Page 571 and 572:
stabilization techniques that consi
Page 573 and 574:
Terrace -----An earthen embankment
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Trench Plug -----A flow obstruction
Page 577 and 578:
Vernal Pool -----Wetlands that occu
Page 579 and 580:
Y Yellowboy -----Iron oxide deposit
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26. Filtrexx, Standard Specificatio
Page 583:
86. USEPA, National Pollutant Disch
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