HomeMy WebLinkAboutSW3230602_Plansheet - Erosion Control_20230623 CONSTRUCTION SEQUENCE EROSION CONTROL NOTES:
8. INSTALL WATER DISTRIBUTION AND SEPTIC SYSTEMS. MINIMAL DISTURBANCE SHALL 7. UNION COUNTY IS NOT RESPONSIBLE FOR THE ACCURACYAND ADEQUACY OF REQUIRED GROUND STABILIZATION TIMEFRAMES
1. OBTAIN APPROVAL LETTER FOR EROSION CONTROL AND SCHEDULE BE MADE DURING INSTALLATION OF SEPTIC SYSTEMS AND ALL AREAS SHALL BE 1. AS REQUIRED BY THE NPDES GENERAL PERMIT NCG010000,ALL PERIMETER
PRE-CONSTRUCTION MEETING ON-SITE WITH THE DEMLR SPECIALIST. ALL APPROVED STABILIZED IMMEDIATELY UPON COMPLETION. DIKES, SWALES, DITCHES, PERIMETER SLOPES AND ALL SLOPES STEEPER THE DESIGN, DIMENSIONS,AND ELEVATIONS, WHICH SHALL BE CONFIRMED -
PLANS AND REQUIRED PERMITS WILL BE ISSUED AT THE MEETING PRIOR TO ANY THAN 3 HORIZONTAL TO 1 VERTICAL 3:1 SHALL BE PROVIDED TEMPORARY OR AND CORRELATED AT THE JOB SITE. UNION COUNTY, THROUGH THE Z
9. SEED AND MULCH DENUDED AREAS IMMEDIATELY AFTER FINISHED GRADES ARE ( ) STABILIZE MIN THIS MANY
APPROVAL OF THIS DOCUMENT,ASSUMES NO RESPONSIBILITY FOR THE - �''� �
LAND DISTURBING ACTIVITY. PERMANENT STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE I� W I�
ESTABLISHED. COMPLETENESS AND/OR ACCURACY OF THIS DOCUMENT. SITE AREA CALENDAR DAYS AFTER ae ap o
BUT IN ANY EVENT WITHIN 7 CALENDAR DAYS FROM THE LAST LAND TIMEFRAME VARIATIONS
2. FLAG THE WORK LIMITS AND BUFFER AREAS FOR PROTECTION. DISTURBING ACTIVITY.ALL OTHER DISTURBED AREAS SHALL BE PROVIDED DESCRIPTION CEASING LAND L u Q N N �,
10. MAINTAIN SOIL EROSION CONTROL MEASURES UNTIL A PERMANENT GROUND COVER TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER AS SOON 8. THE FINANCIALLY RESPONSIBLE PARTY/AGENT Q THE LANDOWNER/AGENT OF DISTURBANCE w U Lu U N
IS ESTABLISHED. A LAND DISTURBING ACTIVITY>ONE ACRE IS REQUIRED TO SELF-INSPECT THE - nl
3. INSTALL CONSTRUCTION ENTRANCE, SILT FENCE,DIVERSION DITCHES, CHECK DAMS, AS PRACTICABLE BUT IN ANY EVENT WITHIN 14 CALENDAR DAYS FROM THE � � Z �
PROJECT. A SELF INSPECTION,AS WELL AS DOCUMENTATION OF A PROJECT uj :n E�
SKIMMER BASINS AND ALL EROSION CONTROL MEASURES AS SHOWN ON APPROVED 11. ADDITIONAL MEASURES MAY REQUIRED BASED UPON ACTUAL SITE CONDITIONS. LAST LAND DISTURBING ACTIVITY GROUND STABILIZATION TIMEFRAME AFTER EACH PHASE OF THE PROJECT, IS REQUIRED. PERIMETER DIKES, m J
PLAN. CLEAR ONLY THE AREA NECESSARY FOR EROSION CONTROL MEASURE EXEMPTIONS CAN BE FOUND IN THE NPDES GENERAL PERMIT NCG010000
15)
INSTALLATION. BASINS AND DITCHES SHALL BE STABILIZED IMMEDIATELY UPON UNDER SECTION 2.B. GROUND STABILIZATION. SWALES, DITCHES& 7 NONE Luz Q o0
12. COMPLETE FINAL GRADING OF STREETS AND STABILIZE WITH GRAVEL. PERIMETER SLOPES Z Lu
INSTALLATION. 9. IF ANY EXCESS SOIL IS HAULED OFFSITE OR IMPORTED IT MUST BE TO OR Lu U j � o
2. REMOVE ALL TEMPORARY EROSION CONTROL DEVICES AND STRUCTURES FROM AN APPROVED PERMITTED SITE. ® J z p
13. COMPLETE FINAL GRADING OF GROUNDS AND PERMANENTLY VEGETATE PER HIGH QUALITY Q Q �-
4. PROCEED WITH ON-SITE CLEARING AND GRADING. REMOVE EXISTING UTILITIES AND ONLYAFTER SITE IS FULLY STABILIZED AND APPROVAL HAS BEEN OBTAINED 10. MATERIAL HANDLING PROCEDURES FOR THE ITEMS REQUIRED IN PART II, (HQW)ZONES 7 NONE Lu M
APPROVED LANDSCAPE PLANS. WATER H
STRUCTURES AS SHOWN ON THE APPROVED PLAN. FROM THE NCDEMLR INSPECTOR. J � `- Q
SECTION F OF THE NGC01 GENERAL PERMIT WILL BE FOLLOWED. N Z
14. REQUEST AN INSPECTION AND UPON APPROVAL REMOVE SOIL EROSION CONTROL SLOPES STEEPER IF SLOPES ARE 10'OR LESS IN LENGTH AND ARE
5. CLEAN SEDIMENT BASINS WHEN ONE-HALF FULL. CHECK AFTER EVERY RAIN EVENT. 3. ALL EROSION CONTROL DESIGNS SHALL BE IN ACCORDANCE WITH THE 7
MAINTAIN RAIN GAUGE AND RECORD KEEPING PER NPDES PERMITTING MEASURES AND STABILIZE THESE AREAS. NCDENR EROSION AND SEDIMENTATION CONTROL PLANNING AND DESIGN 11. IF LAND DISTURBING ACTIVITYAND ANY RELATED BORROW OR WASTE THAN 3:1 NOT STEEPER THAN 2:1, 14 DAYS ARE ALLOWED Q
REQUIREMENTS. MANUAL, LATEST EDITION. ACTIVITY ARE NOT CONDUCTED BY THE SAME PERSON THEY SHALL BE Lu
15. IF COMPOST BLANKETS ARE TO BE INSTALLED FOR TEMPORARY EROSION/SEDIMENT CONSIDERED SEPARATE LAND DISTURBANCE ACTIVITIES. 7 DAYS FOR SLOPES GREATER THAN 50'IN LENGTH
6. ROUGH GRADE STREETS, STOCKPILE TOPSOIL, CONSTRUCT CHANNELS, INSTALL CONTROL, INSTALLATION AND MAINTENANCE SHALL BE IN ACCORDANCE WITH 4. FOR PHASED EROSION CONTROL PLANS, THE CONTRACTOR SHALL MEET WITH AND WITH SLOPES STEEPER THAN 4:1
CULVERTS AND OUTLET PROTECTION,AND INSTALL SILT FENCE AND STONE OUTLETS SECTION 6.18 IN THE NORTH CAROLINA EROSION AND SEDIMENT CONTROL PLANNING THE EROSION CONTROL SPECIALIST PRIOR TO COMMENCING EACH PHASE OF 12. LOT AREAS ARE NOT INTENDED TO BE GRADED AND SHOULD BE LEFT
AS NEEDED. MAINTAIN DIVERSIONS ALONG TOP OF FILL SLOPES DAILY. AND DESIGN MANUAL. EROSION CONTROL MEASURES. UNDISTURBED AT EXISTING GRADE. THIS DEVELOPMENT IS CONSIDERED A SLOPES 3:1 TO 4:1 14 7 DAYS FOR PERIMETER DIKES, SWALES, DITCHES,
LOW DESNITY PROJECT AND DOES NOT REQUIRE POST-CONSTRUCTION PERIMETER SLOPES AND HQW ZONES
7. INSTALL STORM DRAINAGE PER APPROVED PLANS. STORM INLETS SHALL HAVE INLET 16. UPON COMPLETION OF ALL GRADING ACTIVITIES, UTILITY INSTALLATIONS,AND STORM 5. SITE GRADING IS TO BE COVERED UNDER THE GENERAL STORMWATER STORMWATER CONTROL MEASURES(SCMS). THIS INCLUDES THE INSTALLATION
DRAINAGE SYSTEMS INCLUDING STABILIZED OUTFALL STRUCTURES),SEDIMENT OF SEPTIC TANKS AND FIELDS. DEVELOPER/BUILDER WILL BE RESPONSIBLE I I I I I I 1
PROTECTION INSTALLED IMMEDIATELY. ONCE STORM DRAINAGE SYSTEMS ARE BASINS SHALL BE REMOVED AND AREAS RESTORED TO FINAL GRADE) PERMANENTLY PERMIT NCE WITH ANY LAND DISTURBING GENERAL 1 ACRE REQUIRES FOR ANY LOT DISTURBANCES AT A LATER DATE. 10 DAYS FOR FALLS LAKE WATERSHED ����
COMPLETED, ROUTE RUNOFF TO INLETS. INLET PROTECTION SHALL REMAIN IN PLACE STABILIZE AND VEGETATE ALL AREAS. COMPLIANCE WITH ALL CONDITIONS OF THIS GENERAL PERMIT UNDER THE CAROB/
UNTIL ALL AREAS ARE PERMANENTLY STABILIZED. NPDES. ANY NONCOMPLIANCE IS A VIOLATION OF THE CLEAN WATER ACT AND 7 DAYS FOR PERIMETER DIKES, SWALES, DITCHES,
MAY REQUIRE ENFORCEMENT BY NCDENR. 13. ANY TREES WITH DRIPLINE WITHIN LIMITS OF DISTURBANCE SHALL HAVE TREE O ,• FE S S/O ., �i
PROTECTION FENCING INSTALLED PRIOR TO CONSTRUCTION. AREAS WITH SLOPES PERIMETER SLOPES AND HQW ZONES O ti .
FLATTER THAN 4:1 14
6. THE PROFESSIONAL ENGINEER REGISTERED WITH THE STATE OF NORTH 10 DAYS FOR FALLS LAKE WATERSHED - SEAL 9`
CAROLINA WHO PREPARED THE EROSION CONTROL PLAN IS SOLELY 14. EACH LOT WILL BE REQUIRED TO APPLY FOR AN INDIVIDUAL EROSION
RESPONSIBLE FOR IDENTIFICATION AND LOCATION OF ALL ENVIRONMENTAL CONTROL PERMIT AS THEY ARE BUILT. = 04550
WETLANDS, PERENNIAL AND INTERMITTENT STREAMS AND BUFFERS SHOWN
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OWNERS:DRYE BOBBY LANE / CONSTRUCTION INC / CONSTRUCTION INC CONSTRUCTION INC ZONE:RA-40
ZONE:,RA-40 ZONE:RA-40 1 / IN FEET ) C-3. 0
ZONE:RA-40 ZONE:RA-40 ZONE:RA-40
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REF. C-3.0 FOR EROSION
NORTH North American Green NORTH NORTH North American Green North American Green North American Green
5401 St.Wendel-Cynthiana Rd. NORTH z
5401 St.Wendel-Cynthiana Rd. 5401 St.Wendel-Cynthiana Rd. 5401 St.Wendel-Cynthiana Rd. CONTROL NOTES &
AMERICAN Poseyville,Indiana 47633 AMERICAN Poseyville,Indiana 47633 AMERICAN Poseyville,Indiana 47633 AMERICAN Poseyville,Indiana 47633 ce LU l,'
GREEN Tel.800.772.2040 hi GREEN Tel.800.772.2040 GREEN Tel.800.772.2040 hi GREEN Tel.800.772.2040 Do o
>Fax 812.867.0247 >Fax 812.867.0247
>Fax 812.867.0247 >Fax 812.867.0247 CONSTRUCTION SEQUENCE LUo Q co
www.nagreen.com www.nagreen.com www.nagreen.com www.nagreen.com LU Q U w U N N
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CHANNELANALYSIS CHANNELANALYSIS VI � m J co
CHANNELANALYSIS CHANNELANALYSIS LLJ � N o
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Name Ex Swale 1A Name Ex Swale 1C z W cc
EROSION CONTROL LEGEND _ ¢
Name Ex Swale 1 B Name Swale Cavalry S z
Discharge 1.34 Discharge 2.04 Discharge 2.51 Discharge 1.01 L,L,I V 7~
Channel Slope 0.041 Channel Slope 0.044 Channel Slope 0.022 Channel Slope 0.03 J z
Channel Bottom Width 0 Channel Bottom Width o Channel Bottom Width 0 Channel Bottom Width 0 DESCRIPTION SYMBOL ON PLANS LU ® C¢ Q
Left Side Slope 3 Left Side Slope 3 Left Side Slope 3 Left Side Slope 3 0 Q7
Right Side Slope 3 Right Side Slope 3 Right Side Slope 3 Right Side Slope 3 1 I"t � (v =
Low Flow Liner Low Flow Liner Low Flow Liner Low Flow Liner LIMITS OF DISTURBANCE
Retardence Class C 6-12 in Retardence Class C 6-12 in Retardence Class C 6-12 in Retardenoe Class C 6-12 in
Vegetation Type Mix(Sod and Bunch) Vegetation Type Mix(Sod and Bunch) Vegetation Type Mix(Sod and Bunch) Vegetation Type Mbc(Sod and Bunch) DRAINAGE AREA DELINEATION LU
Vegetation Density Good 65-79% Vegetation Density Good 65-79% Vegetation Density Good 65-79% Vegetation Density Good 65-79% NCDEQ 6.62
Soil Type Silt Loam(SM) Soil Type Silt Loam(SM) Soil Type Silt Loam(SM) Soil Type Silt Loam(SM) SILT FENCE( ) _0-0-0-0-0-
S75 S75 S75 S75
TREE PROTECTION FENCE rP rP rP
Normal Permissible Calculated Safety Staple Normal Permissible Calculated Safe Staple Normal Permissible Calculated Safety Staple Normal Permissible Calculated Safety Staple
Phase Reach Discharge Velocity Mannings N Remarks Phase Reach Discharge Velocity Mannin s N h' Remarks p Phase Reach Discharge Velocity Mannings N Remarks Phase Reach Discharge Velocity Mannings N Remarks
Depth Shear Stress Shear Stress Factor Pattern g ty Depth g Shear Stress Shear Stress Factor Pattern Depth Shear Stress Shear Stress Factor Pattem Depth Shear stress Shear Stress Factor Pattern
S75 Unvegetated Straight 1.34 cfs 2.93 ft/s 0.39 ft 0.033 1.6 Ibs/ft2 0.99 Ibs/ft2 1.62 STABLE D S75 Unvegetated Straight 2.04 cfs 3.43 ft/s 0.45 ft 0.032 1.6 Ibs/1`1,2 1.22 Ibs/ft2 1.31 STABLE D IS75 Unvegetated Straight 2.51 cfs 2.66 ft/s 0.56 ft 0.034 1.6 Ibs/ft2 0.77lbs/ft2 2.08 STABLE D S75 Unvegetated Straight 1.01 cfs 2.36 ft/s 0.38 ft 0.035 1.6 Ibs/ft2 0.71 Ibs/ft2 2.26 STABLE D RIPRAP
Underlying Straight 1.34 cfs 2.93 ft/s 0.39 ft 0.011 1.17 Ibs/ft2 0.47 Ibs/191:2 2.5 STABLE D Underlying Straight 2.04 cfs 3.43 ft/s 0.45 ft 0.032 1.17 Ibs/ft2 0.58 Ibs/ft2 2.02 STABLE D Underlying Straight 2.51 cfs 2.66 ft/s 0.56 ft 0.034 1.17 Ibs/ft2 0.371bs/ft2 3.21 STABLE D Underlying Straight 1.01 cfs 2.36 ft/s 0.38 ft 0.035 1.17 Ibs/ft2 0.34 lbs/ft2 3.49 STABLE D
Substrate Substrate \ p /
Substrate _ Substrate \\\ � CA
_ N R
Unreinforced Vegetation Unreinforced Vegetation Unreinforced Vegetation Unreinforced Vegetation ��.•�FESS�O�!%
Normal Permissible Calculated Safety Staple Normal Permissible Calculated safe Staple Normal Permissible Calculated Safety Staple Normal Permissible Calculated Safet Sta le Phase Reach Discharge Velocity Mannin s N Remarks Safety P Phase Reach Discharge Velocity Mannings N Remarks y P Q 9<•.
g y Depth g Shear Stress Shear Stress Factor Pattern Phase Reach Discharge Velocity Mannings N Remarks Depth Shear Stress Shear Stress Factor Pattern Phase Reach Discharge Velocity Mann N Remarks
Depth Shear Stress Shear Stress Factor Pattern Depth Shear Stress Shear Stress Factor Pattern SEAL
Unreinforced Straight 1.34 cfs 1.93 ft/s 0.48 ft 0.058 41bs/ft2 1.23 Ibs/ft2 3.25 STABLE -- Unreinforced Straight 2.04 cfs 2.33 ft/s 0.54 ft 0.054 4 Ibs/ft2 1.48 Ibs/ft2 2.7 STABLE -- Unreinforced Straight 2.51 cfs 1.67 ft/s 0.71 ft 0.064 4 Ibs/ft2 0.97 lbs/ft2 4.11 STABLE -- Unreinforced Straight 1.01 cfs 1.46 ft/s 0.48 ft 0.066 4 Ibs/ft2 0.9 Ibs/ft2 4.45 STABLE -- -
TOTAL DISTURBED AREA: 0. 78 AC = 04550,9 _-
Vegetation Vegetatlon
Vegetation _ Vegetation
Underlying Straight 1.34 cfs 1.93 ft/s 0.48 ft 0.058 3.7 Ibs/ft2 0.58 Ibs/ft2 6.34 STABLE -- Underl in g _ Underlying Straight 2.51 cfs 1.67 ft/s 0.71 ft 0.064 4 Ibs/ft2 0.46lbs/ft2 8.67 STABLE -- g
Underlying Straight 2.04 cfs 2.33 ft/s 0.54 ft 0.054 3.18 Ibs/ft2 0.7 Ibs/ft2 4.53 STABLE - Underlying Strai ht 1.01 cfs 1.46 ft/s 0.48 R 0.066 4 Ibs/ft2 0.431bs/ft2 9.37 STABLE --
Substrate Substrate Substrate _ Substrate
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I _ (EX. MAINTENANCE R/W VARIABLE ALONG LOD
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/ WIDTH FROM CENTERLINE) / = / / / n w z
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h�0 PARCEL ID:01144012U
OWNERS:EMERALD POINTE h
/ REALTY&CONSTRUCTION INC
ZONE:RA-40
/ PARCEL ID:01144012V I '
PARCEL ID:01144012Y / L � _
/ OWNERS:EMERALD / L(0
POINTE REALTY& PARCEL ID:01144012X \ OWNERS:EMERALD POINTS /
PARCECID:01144012W OWNERS:EMERALD REALTY&CONSTRUCTION INC O O Cfl
/ CONSTRUCTION INC ZONE:RA-40 U > O
ZONE:RA-40 OWNERS:EMERALD POINTS REALTY&POINTS REALTY& CONSTRUCTION INC - - - - - - - - - - - - - - - - - - - - - - - - - - - L
CONSTRUCTION INC ZONE:RA-40 \
ZONE:A-40
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W z o
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Swale ID Drainage Length Average Bottom Side Channel 10-year Analysis m
Area(ac) (ft) Slope Width (ft) ' Slope (H:1V) Liner Q(cfs) V(fps) Depth(ft) z o
w
z
c�
Permanent Swale Cavalry S 0.52 116 3.0% 0.0 3.0 S75 1.25 2.49 0.40 m w
Existing Swale 1A 0.56 482 4.1% 0.0 3.0 N/A 1.34 2.93 0.39 y
Existing Swale 1B 0.85 736 4.4% 0.0 3.0 N/A 2.04 3.43 0.45 GRAPHIC SCALE
Existing Swale 1C 1.04 438 2.2% 0.0 2.5 N/A 2.51 2.66 ��0.56 0 40' so' Sheet
( IN FEET ) C-3.
1
1 inch = 40 ft.