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HomeMy WebLinkAboutWPO201600045 Plan - E&S 2016-09-23A EROSION AND SEDIMENT CONTROL LEGEND C E 3.02 �j F 3.05 nop 3.18 (0-P) PAVED CONSTRUCTION ENTRANCE W/ WASH RACK SUPER SILT FENCE OUTLET PROTECTION TS 3.31 TS TEMPORARY SEEDING P S 3.32 Ps PERMANENT SEEDING M U 3.35 M U MULCH 0 3.39 DC DUST CONTROL TOTAL DISTURBED AREA = 3.24 ACRES SITE DATA OWNER / DEVELOPER. COUNTY OF ALBEMARLE 401 MCINTIRE ROAD CHARLOTTESVILLE, VA 22902 PLAN PREPARER/CONTACT: ROUDABUSH, GALE, & ASSOCIATES 914 MONTICELLO ROAD CHARLOTTESVILLE, VA. 22902 (434) -977-0205 TAX MAP PARCEL No: A PORTION OF 055EO-01-00-000HO ZONING: NEIGHBORHOOD MODEL DISTRICT IN ACCORDANCE WITH PROFFERS OF ZMA-04-024 APPROVED ON SEPTEMBER 14, 2005 USE. STORMWATER MANAGEMENT MAINTENANCE ACCESS PATH AND STOCKPILE ACCESS FOR OLD TRAIL VILLAGE DEVELOPMENT. PROPOSED 0 S.F. IMPERVIOUS AREA: DISTURBED ACREAGE. 3.24 AC MAGISTERIAL DISTRICT. WHITE HALL MAGISTERIAL DISTRICT STORMWATER MANAGEMENT: AS DEFINED BY THE APPROVED OLD TRAIL OVERALL STORMWATER MASTER PLAN WATERSHED: LICKINGHOLE CREEK DATUM: VERTICAL - NAVD 88, HORIZONTAL - NAD 83 CRITICAL SLOPES: CRITICAL SLOPES EXIST WITHIN THE PROJECT LIMITS. FLOODPLAIN: A PORTION OF THE PROPERTY IS WITHIN THE FLOODPLAIN HOWEVER THE LIMITS OF DISTURBANCE FOR THIS PROJECT REMAIN OUTSIDE OF THE FLOODPLAIN LIMITS AS SHOWN ON FLOOD INSURANCE RATE MAP COMMMUNITY PANEL NUMBER 510006 0237 D. EFFECTIVE DATE: FEBRUARY 4, 2005. THE STREAM BUFFERS) SHOWN HEREON SHALL BE MANAGED IN ACCORDANCE WITH THE ALBEMARLE COUNTY WATER PROTECTION ORDINANCE. THIS SITE IS NOT LOCATED WITHIN AN AGRICULTURAL -FORESTAL DISTRICT. THIS SITE IS LOCATED WITHIN THE WATERSHED OF A PUBLIC WATER SUPPLY RESERVOIR!. 0 LD TRAI L V1 LLAG E PARK GREENWAY ATH ROSION CONTRO PLAN VICINITY MAP SCALE:: 1'=1000 FEET GENERAL EROSION AND SEDIMENT CONTROL NOTES ES -1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. ES -2: THE PLAN APPROVING AUTHORITY MUST BE NOITIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES -3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. ES -4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES, ES -5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN REVIEWING AUTHORITY. ES -6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN REVIEWING AUTHORITY. ES -7: ALL DISTURBED ARES ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION HAS BEEN ACHIEVED. ES -8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. ES -9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. SHEET INDEX APPROVED by the Albemarle County Community Development Department Date (11- i �k't File LTx °F Ll� o WILLIAM J. LEDBETTER Lic. No. 1507-8 <qND 131?- SUR"Jo ftp gm FF1 REVISIONS COUNTY COMMENTS AUGUST 23, 2016 DATE May 2, 20161 SCALE 1 "= 100+0' CONTOUR INTERVAL w z 0T.d F- Z W (' ir WJE- �> F_ J Z z oc_ O° W< Z w >LCCW Za 01_ W 02 00 c — J 0 cr W FILE NUMBER 8053 SHEET 1 of 5 • w � O N c/) � N¢ Z �.. U ccW oo wO rz w Q 0 L? V0) ''i j .N ¢ M M' U-1 � w O �rz kW Q Z i or, 0) 0 CO w W Z 0 d REVISIONS COUNTY COMMENTS AUGUST 23, 2016 DATE May 2, 20161 SCALE 1 "= 100+0' CONTOUR INTERVAL w z 0T.d F- Z W (' ir WJE- �> F_ J Z z oc_ O° W< Z w >LCCW Za 01_ W 02 00 c — J 0 cr W FILE NUMBER 8053 SHEET 1 of 5 r REVISIONS � COUNTY COMMENTS AUGUST 23, 2016 DATE May 2, 2015 SCALE 1"=100' CONTOUR INTERVAL 2 Feet FILE NUMBER 8058 SHEET 2 Of 5 lk USACE \ JURISDICTIONAL WETLANDS',. V<* 0 C,7 cli W o� CL 1,0 Q Z 52 Q WW }0 cn 'JJ () z cn 0 w J N t�Ci W Cal coo OR W Z O u. �w CL 0 w d Z a. COUNTY COMMENTS AUGUST 23, 2016 DATE May2, 21716 SCALE 1 "=60' CONTOUR INTERVAL 2 FOOT FILE NUMBER 8053 SHEET 3 of 5 A0 EROSION AND SEDIMENT CONTROL NARRATIVE PRIOR TO CONSTRUCTION 1. OWNER SHALL POST SURETY BONDS FOR CONSTRUCTION, EROSION & SEDIMENT CONTROL. 2. CONTRACTOR SHALL OBTAIN PERMITS TO WORK WITHIN STATE RIGHT-OF-WAY (VDOT LAND -USE PERMIT). BONDING FOR WORK WITHIN THE VDOT RIGHT-OF-WAY MAY BE REQUIRED TO OBTAIN THE PERMIT. 3. CONTRACTOR SHALL COORDINATE WITH OWNER TO OBTAIN VSMP PERMITS, AS REQUIRED BY THE STATE DEPARTMENT OF ENVIRONMENTAL QUALITY (DEQ). 4. CONTRACTOR SHALL OBTAIN LAND DISTURBANCE PERMIT FROM THE COUNTY OF ALBEMARLE PRIOR TO BEGINNING CONSTRUCTION. 5. A PRE -CONSTRUCTION MEETING WITH THE ENGINEER, THE CERTIFIED LAND DISTURBER, AND THE ENVIRONMENTAL INSPECTOR MAY ALSO BE REQUIRED. ALLOW 72 HOURS FOR COORDINATION AND SCHEDULING OF PRE -CONSTRUCTION MEETING. PROJECT DESCRIPTION THE PURPOSE OF THIS PROJECT IS TO CONSTRUCT A MAINTENANCE ACCESS PATH TO THE STORMWATER MANAGEMENT FACILITY ON THE EAST SIDE OF BLOCK 30 AND TO PROVIDE TWO (2) STOCKPILES FOR THE OLD TRAIL VILLAGE DEVELOPMENT. THE MAINTENANCE ACCESS PATH WILL ALSO SERVE AS A GREENWAY PATH AROUND THE OLD TRAIL VILLAGE DEVELOPMENT. ALL EXISTING AND PROPOSED RUNOFF FROM THE SITE WILL OUTFALL TO LICKINGHOLE CREEK. THE LIMITS OF DISTURBANCE INCLUDES APPROXIMATELY 4.58 ACRES OF LAND DISTURBING ACTIVITIES. EXISTING SITE CONDITIONS THE PROJECT AREA HAS BEEN USED AS A MULTI -USE RECREATION FIELD. IT HAS BEEIN STABILIZED AND IS OPEN AND GRASS COVERED. THE PROPOSED MEASURES TO CAPTURE THE SITE'S RUNOFF DURING THE CONSTRUCTION OF THE PATH WILL BE SUPER SILT FENCE. INSTALLATION AND MAINTENANCE OF THE PERIMETER CONTROLS THROUGHOUT CONSTRUCTION IS CRITICAL TO PREVENTING SEDIMENT LATENT RUNOFF FROM EXITING THE SITE. ADJACENT AREAS OLD TRAIL DRIVE FORMS THE WESTERN BORDER, LICKINGHOLE CREEK LIES TO THE NORTH, CLAREMONT LANE AND FUTURE BLOCK 30 LIE TO THE SOUTH OF THE PROJECT SITE. THE PROJECT SITE IS BOUND TO THE EAST BY A STORMWATER MANAGEMENT FACILITY. THIS BOUNDARY IS ADJACENT TO PRIVATE RESIDENTIAL LOTS AND AN EXISTING POND AND WETLAND AREA THAT DRAIN TO SLABTOWN BRANCH. OFF-SITE AREAS NO CONSTRUCTION OUTSIDE THE LIMITS OF DISTURBANCE SHOWN IS REQUIRED. ANY SURPLUS OR SHORTAGE SHALL BE BROUGHT TO OR OBTAINED FROM A SITE WITH APPROVED AND ADEQUATE EROSION CONTROL PROTECTION. SOILS 4D - ASHE LOAM (15% TO 25%) SOIL IS MODERATELY DEEP, MODERATELY STEEP AND SOMEWHAT EXCESSIVELY DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY IS MODERATELY RAPID. WATER CAPACITY IS LOW. SURFACE RUNOFF IS RAPID AND EROSION HAZARD IS SEVERE. 17 - CRAIGSVILLE LOAM (0% TO 2%) SOIL IS DEEP, NEARLY LEVEL AND WELL -DRAINED, AND IS IN HYDROLOGIC GROUP A. PERMEABILITY IS MODERATELY RAPID. WATER CAPACITY IS VERY LOW OR LOW. SURFACE RUNOFF IS SLOW AND EROSION HAZARD IS SLIGHT. 26133 - DYKE CLAY LOAM (2% TO 7%) SOIL IS DEEP, GENTLY SLOPING AND WELL -DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY AND WATER CAPACITY ARE MODERATE. SURFACE RUNOFF IS MEDIUM AND EROSION HAZARD IS MODERATE. 37D3 - HAYESVILLE CLAY LOAM (15% TO 25%, SEVERELY ERODED) SOIL IS DEEP, MODERATELY STEEP AND WELL -DRAINED, AND IS IN HYDROLOGIC GROUP B. PERMEABILITY AND WATER CAPACITY ARE MODERATE. SURFACE RUNOFF IS RAPID AND EROSION HAZARD IS SEVERE. 66E - PARKER VERY STONY LOAM (25% TO 45%) SOIL IS DEEP AND EXCESSIVELY DRAINED ON STEEP SLOPES, AND IS HYDROLOGIC GROUIP B. PERMEABILITY IS MODERATELY RAPID AND AVAILABLE WATER CAPACITY IS LOW. SURFACE RUNOFF IS VERY RAPID AND EROSION HAZARD IS VERY SEVERE. STRUCTURAL PRACTICES 1. TEMPORARY CONSTRUCTION ENTRANCE (3.02) - A TEMPORARY CONSTRUCTION ENTRANCE SHALL BE INSTALLED AT SITE ENTRANCE OFF OF OLD TRAIL DRIVE. 2. SILT FENCE BARRIER (3.05) - SILT FENCE BARRIERS WILL BE INSTALLED TO FILTER RUNOFF FROM SHEET FLOW AS INDICATED ON THE EROSION AND SEDIMENT CONTROL PLAN. 3. SUPER SILT FENCE BARRIER - WIRE -REINFORCED SILT FENCE BARRIER WILL BE INSTALLED TO FILTER RUNOFF FROM SHEET FLOW AS INDICATED ON THE EROSION AND SEDIMENT CONTROL PLAN. VEGETATIVE PRACTICES 1. SURFACE ROUGHENING (3.29) - ALL AREAS WITH A GRADE STEEPER THAN 3:1 SHALL BE STAIR -STEP GRADED OR GROOVED (PLATE 3,29-4) TO AID IN GRASS ESTABLISHMENT, INCREASE INFILTRATION, AND TO SLOW RUNOFF VELOCITIES. 2. TOPSOILING & STOCKPILING (3.30) - TOPSOIL WILL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED FOR LATER USE. STOCKPILES ARE TO BE STABILIZED WITH TEMPORARY VEGETATION OR TO HAVE SILT FENCE INSTALLED ALONG THE LOWER PERIMETER TO PROTECT DOWNSTREAM AREAS. 3. TEMPORARY SEEDING (3.31) - AREAS NOT BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 14 DAYS SHALL BE STABILIZED WITH A TEMPORARY SEED MIXTURE ACCEPTABLE FOR THAT TIME OF YEAR. CRIMPING, PUNCH ROLLER -TYPE ROLLERS, OR TRACK WALKING MAY BE USED TO INCORPORATE STRAW MULCH INTO THE SOIL ON SLOPES IF STRAW IS TO BE USED. 4. PERMANENT SEEDING (3.32) - AREAS BROUGHT TO FINAL GRADE OR THOSE CONSTRUCTION AREAS THAT WILL REMAIN DORMANT FOR YEAR OR MORE SHALL BE STABILIZED WITH A PERMANENT SEED MIXTURE ACCEPTABLE TO THAT TIME OF YEAR;. PREPARE SURFACE WITH APPROVED TREATMENT AND ADDITIVES PRIOR TO APPLYING SEED. 5. MULCH (3.35) - PLANT RESIDUES OR OTHER SUITABLE MATERIALS SHALL BE APPLIED TO DISTURBED SURFACES TO PREVENT EROSION AND REDUCE OVERLAND FLOW VELOCITIES. THIS PRACTICE SHOULD BE APPLIED TO ALL SEEDING OPERATIONS, OTHER PLANTER MATERIALS WHICH DO NOT PROVIDE ADEQUATE SOIL PROTECTION BY THEMSELVES, AND BARE AREAS WHICH CANNOT BE SEEDED DUE TO THE SEASON BUT WHICH STILL NEED PROTECTION TO PREVENT SOIL LOSS. CRIMPING, PUNCH ROLLER -TYPE ROLLERS, OR TRACK WALKING MAY BE USED TO INCORPORATE STRAW MULCH INTO THE SOIL ON SLOPES IF STRAW IS TO BE USED. 6. DUST CONTROL (3.39) - DUST CONTROL METHODS MUST BE USED TO REDUCE THE AMOUNT OF AIRBORNE DUST DURING ALL PHASES OF CONSTRUCTION WHERE SOIL IS EXPOSED OR DISTURBED. MANAGEMENT STRATEGIES 1. CONSTRUCTION WILL BE SEQUENCED SO THAT GRADING OPERATIONS CAN BE SEQUENCED, AND ALSO BEGIN AND END AS QUICKLY AS POSSIBLE. 2. THE CONSTRUCTION ENTRANCE AND PERIMETER EROSION CONTROL MEASURES SUCH AS SILT FENCE SHALL BE INSTALLED AS THE FIRST STEP OF DISTURBANCE. 3. TEMPORARY SEEDING OR OTHER STABILIZATION METHODS, SUCH AS BASE AGGREGATE WILL FOLLOW IMMEDIATELY AFTER REACHING FINAL GRADES. 4. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND' IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RE -SEEDED AS NEEDED TO ESTABLISH GROWTH.. 5. THE JOB SUPERINTENDENT SHALL BE RESPONSIBLE FOR THE INSTALLATION AND MAINTENANCE OF ALL EROSION AND SEDIMENT CONTROL PRACTICES. 6. AFTER BEING NOTIFIED BY THE EROSION AND SEDIMENT CONTROL ADMINISTRATOR, THE TEMPORARY EROSION AND SEDIMENT CONTROLS CAN BE CLEANED UP OR REMOVED, AND THE SEDIMENT TRAPS CAN BE FILLED IN AND SEEDED, THEREBY REDIRECTING DRAINAGE TO THE PERMANENT FACILITIES. PERMANENT STABILIZATION ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH STRAW & SEED IMMEDIATELY FOLLOWING FINISHED GRADE. SEEDING SHALL BE DONE WITH KENTUCKY 31 TALL FESCUE IN ACCORDANCE TO STANDARD AND SPECIFICATION 3.32, PERMANENT SEEDING, OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. ANY FERTILIZER AND LIME APPLICATIONS SHALL BE IN ACCORDANCE WITH SOIL TEST RESULTS. ALL SEEDED AREAS WILL BE STRAW MULCHED TO PROTECT AGAINST RILL EROSION AND TO PRESERVE SOIL MOISTURE THAT WILL ENHANCE SEED GERMINATION. CRIMPING, PUNCH ROLLER -TYPE ROLLERS, OR TRACK WALKING MAY BE USED TO INCORPORATE STRAW MULCH INTO THE SOIL ON SLOPES IF STRAW IS TO BE USED. EROSION CONTROL MAINTENANCE 1. IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. THE FOLLOWING ITEMS WILL BE CHECKED IN PARTICULAR: 2. THE CONSTRUCTION ENTRANCE SHALL BE CHECKED DAILY FOR SOIL BUILDUP. IF THE ENTRANCE BECOMES CLOGGED WITH SOIL AND FAILS TO PREVENT TRANSPORTATION OF SOIL ONTO THE ROADWAY, ADDITIONAL STONE, REPLACEMENT OF STONE, OR A WASH -RACK MAY BE REQUIRED. 3. SILT FENCE SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL. CLOSE ATTENTION SHALL BE PAID TO THE REPAIR OF DAMAGED SILT FENCE RESULTING FROM END RUNS AND UNDERCUTTING. SHOULD THE FABRIC ON A SILT FENCE DECOMPOSE OR BECOME INEFFECTIVE PRIOR TO THE END OF THE EXPECTED USABLE LIFE AND THE BARRIER STILL BE NECESSARY, THE FABRIC SHALL BE REPLACED PROMPTLY. SEDIMENT DEPOSITS SHOULD BE REMOVED AFTER EACH STORM EVENT. THEY MUST BE REMOVED WHEN DEPOSITS REACH APPROXIMATELY ONE-HALF THE HEIGHT OF THE BARRIER. ANY SEDIMENT DEPOSITS REMAINING IN PLACE AFTER THE SILT FENCE IS NO LONGER REQUIRED SHALL BE DRESSED TO CONFORM WITH THE EXISTING GRADE, PREPARED, AND SEEDED. 4. STORMWATER CONVEYANCE CHANNELS: 4.1. RIPRAP-LINED CHANNELS - RIPRAP LINED CHANNELS SHOULD BE CHECKED PERIODICALLY TO ENSURE THE SCOUR IS NOT OCCURRING BENEATH FABRIC UNDERLINING OF THE RIPRAP LAYER. THE CHANNEL SHOULD ALSO BE CHECKED TO DETERMINE THE STONES ARE NOT DISLODGED BY LARGE FLOWS. 4.2. SEDIMENT DEPOSITED IN A RIPRAP CHANNEL SHOULD BE REMOVED WHEN IT REDUCES THE CAPACITY OF THE CHANNEL. 5. THE EARTHEN EMBANKMENTS SHALL BE CHECKED REGULARLY TO ENSURE THAT IT IS STRUCTURALLY SOUND AND HAS NOT BEEN DAMAGED BY EROSION OR CONSTRUCTION EQUIPMENT. 6. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RE -SEEDED AS NEEDED. SEQUENCE OF CONSTRUCTION BEGIN CONSTRUCTION 1.) AFTER OBTAINING ALL REQUIRED PERMITS, THE CONTRACTOR SHALL COORDINATE A PRE -CONSTRUCTION MEETING, ALLOWING 72 HOURS FOR ITS COORDINATION. 2.) CONTRACTOR SHALL INSTALL CONSTRUCTION ENTRANCE AND SUPER SILT FENCE AS FIRST STEP IN CONSTRUCTION. 3.) CONTRACTOR SHALL COORDINATE INSPECTIONS, AS REQUIRED BY THE COUNTY OF ALBEMARLE.. 4.) AFTER RECEIVING ENGINEERING APPROVAL, BEGIN CLEARING, GRUBBING AND FINE GRADING OPERATIONS AS NECESSARY TO ACHIEVE FINAL GRADES, 5.) PERMANENT SOIL STABILIZATION SHALL BE APPLIED TO ALL DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 6.) AFTER SITE IS STABILIZED AND PERMISSION IS OBTAINED FROM THE EROSION CONTROL INSPECTOR, REMOVE SILT FENCING AND OTHER ESC MEASURES. CE CONSTRUCTION ENTRANCE --------------- _I CT10 d EROFILE Le� I `k�l 11 lit ,�.•1 Cj HIM SECTION A. --A A mmftittuttt N'=a#�r tai', uff t4�lt ttsu E I_)� itr�#allecl t�itli ;� tttittiitntttt 1 ittclt t�,�llay+�� la �in>#cbft �-a1�°e ;�z1I)1�1°�tti�� a Asa,>lt ltc��+; s��#lt �� tlA�rzttet�z` ��f f � lig�:ite.. i't,�r �icl�t�rt�st c:olu4rattt- prey tll'e' 4;'a it Ava#er 111t0 I)e call)ied av;"ly fi+_mt file elltralii�e tai all appf(�I-ed : 0fhlltall ea to _AEl s(diimiat ;Ball be Lal - m�lzted h tEait eitteiut, tr tYtt s 9r gut , ditc Ile ar PAVED WASH RACK 0�) FOR THE PIEDMONT AREA TABLE 25 TOTAL LBS. PER ACRE MINIMUM CARE LAWN - COMMERCIAL OR RESIDENTIAL 175-200 LBS. - KENTUCKY 31 OR TURF -TYPE TALL FESCUE %95-100% - IMPROVED PERENNIAL RYE GRASS 0-5% - KENTUCKY BLUEGRASS 0-5% HIGH MAINTENANCE LAWN 200-250 LBS. - KENTUCKY 31 OR TURF -TYPE TALL FESCUE 100% GENERAL SLOPE (3:1 OR LESS) - KENTUCKY 31 FESCUE 128 LBS. - RED TOP GRASS 2 LBS. - SEASONAL NURSE CROP* 20 LBS. TOTAL 150 LBS. LOW -MAINTENANCE SLOPE (STEEPER THAN 3:1) Maintenance Fertilization for Permanent Seedings - KENTUCKY 31 FESCUE 108 LBS. - RED TOP GRASS 2 LBS. - SEASONAL NURSE CROP* 20 LBS. - CROWN VETCH** 20 LBS. Date 38 TOTAL 150 LBS. *USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW: FEBRUARY 16TH THROUGH APRIL 30TH. . . . . . . . . . . . ANNUAL RYE MAY 1ST THROUGH AUGUST 15TH . . . . . . . . . . . . . . FOXTAIL MILLET r•ME %� . . . . . .ANNUAL RYE i.... E. I. . . . . . . ANNUAL RYE 74 s J t N_' .. ' Le� I `k�l 11 lit ,�.•1 Cj HIM SECTION A. --A A mmftittuttt N'=a#�r tai', uff t4�lt ttsu E I_)� itr�#allecl t�itli ;� tttittiitntttt 1 ittclt t�,�llay+�� la �in>#cbft �-a1�°e ;�z1I)1�1°�tti�� a Asa,>lt ltc��+; s��#lt �� tlA�rzttet�z` ��f f � lig�:ite.. i't,�r �icl�t�rt�st c:olu4rattt- prey tll'e' 4;'a it Ava#er 111t0 I)e call)ied av;"ly fi+_mt file elltralii�e tai all appf(�I-ed : 0fhlltall ea to _AEl s(diimiat ;Ball be Lal - m�lzted h tEait eitteiut, tr tYtt s 9r gut , ditc Ile ar PAVED WASH RACK 0�) FOR THE PIEDMONT AREA TABLE 25 TOTAL LBS. PER ACRE MINIMUM CARE LAWN - COMMERCIAL OR RESIDENTIAL 175-200 LBS. - KENTUCKY 31 OR TURF -TYPE TALL FESCUE %95-100% - IMPROVED PERENNIAL RYE GRASS 0-5% - KENTUCKY BLUEGRASS 0-5% HIGH MAINTENANCE LAWN 200-250 LBS. - KENTUCKY 31 OR TURF -TYPE TALL FESCUE 100% GENERAL SLOPE (3:1 OR LESS) - KENTUCKY 31 FESCUE 128 LBS. - RED TOP GRASS 2 LBS. - SEASONAL NURSE CROP* 20 LBS. TOTAL 150 LBS. LOW -MAINTENANCE SLOPE (STEEPER THAN 3:1) Maintenance Fertilization for Permanent Seedings - KENTUCKY 31 FESCUE 108 LBS. - RED TOP GRASS 2 LBS. - SEASONAL NURSE CROP* 20 LBS. - CROWN VETCH** 20 LBS. Date 38 TOTAL 150 LBS. *USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW: FEBRUARY 16TH THROUGH APRIL 30TH. . . . . . . . . . . . ANNUAL RYE MAY 1ST THROUGH AUGUST 15TH . . . . . . . . . . . . . . FOXTAIL MILLET AUGUST 16TH THROUGH OCTOBER 31ST. . . . . . . . . . . .ANNUAL RYE NOVEMBER 1ST THROUGH FEBRUARY 15TH . . . . . . . . . . ANNUAL RYE ** SUBSTITUTE SERICEA LESPEDEZA FOR CROWNVETCH EAST OF FARMVILLE, VA (MAY THROUGH SEPTEMBER USE HULLED SERICEA, ALL OTHER PERIODS, USE UNHULLED SERICEA.) 5/1- IF FLATPEA IS USED IN LIEU OF CROWNVETCH, INCREASE RATE TO 30 LBS./ACRE. ALL LEGUME SEED MUST BE PROPERLY INNOCULATED. WEEPING LOVEGRASS MAY BE ADDED TO ANY SLOPE OR LOW MAINTENANCE MIX DURING WARMER SEEDING PERIODS; ADD 10- 20 LBS./ACRE IN MIXES. SSF SUPER SILT FENCE CONSTRUCTION OF A SILT FENCE (WITH WIRE SUPPORT) 1. SET THE STAKES. 2. EXCAVATE A 4"X 4" TRENCH UPSLOPE ALONG THE LINE OF STAKES. 6'MAX. r7c FLOW / I 3. STAPLE FILTER MATERIAL TO STAKES AND EXTEND IT INTO THE TRENCH. 4. BACKFILL AND COMPACT THE EXCAVATED SOIL, SHEET FLOW INSTALLATION (PERSPECTIVE VIEW) SFVSTONE NOT REQUIRED AFTER SLOPES ARE STABILIZED DOWNSLOPE OF OUTFALL POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) Sherwood and Wyant TEMPORARY SEEDING MIXTURES OTSIFOR THE PIEDMONT AREA INFORMATION FROM TABLE 3.32-C OF THE VA ESC HANDBOOK IS PROVIDED BELOW FOR SEEDING SELECTION TOTAL LBS. PER ACRE MINIMUM CARE LAWN 200-250 LBS -COMMERCIAL OR RESIDENTIAL 90-100% KENTUCKY 31 OR TURF -TYPE TALL FESCUE 0-10% IMPROVED PERENNIAL RYEGRASS 0-10% KENTUCKY BLUEGRASS GENERAL SLOPE (3:1 OR LESS) 128 LBS KENTUCKY 31 FESCUE 2 LBS RED TOP GRASS 20 LBS SAEASONAL NURSE CROP ** ** USE: SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW: MARCH, APRIL THROUGH MAY 15TH ANNUAL RYE MAY 16TH THROUGH AUGUST 15TH FOXTAIL MILLET AUGUST 16TH THROUGH SEPTEMBER, OCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY WINTER RYE FERTILIZER (10-20-10 OR EQ) SHALL BE APPLIED AT THE RATE OF 1000 LBS/ ACRE. AGRICULTURAL LIME SHALL BE APPLIED TO SEEDBEDS AT TTHE RATE OF 90 LBS/ 1000 SQ. FT. SUGGESTED TEMPORARY SEEDING MIXTURE FFR I } r 1 0 ?0` 10 1,000) 1 3';/'^(C�. r t C ' C ,r ' t oR �J\i `i0: ANNUAL 10 ,,,I , 1.:N ? _ 100 ..BS ; /ACRE E EE;E J. � r_ ?•.('E..L ..SU. ;! r,l-. L IU`) 1 r'. /!`A.0 \E MA Y�': r E, ,r`; �r it l_ E.1 LBS/ACRE HEr, OP -:10 1 _. E 1, 1, EE ;A E I ION A N DIMEN I • OIN f ;Ul IAN401300K. SUGGESTED PERMANENT SEEDING MIXTURE I`_/ACE:_ __ E:=};11U!ZLi;'; ;0 2)0 Iii 1;()00 L= ;1A ,I ,4A r "I ,. I,E I (,'K1' >1 E _:;:1 I- '200 LL 1CRE, r,riiJLi ,L RYE 2 i Lw %<1( RE '�.1-`�`( 1rG-A!;!) I.. 4<E: J'l1"Ky '1 ::=1 L - )r) LE`_;iA,CE�C; ^i=;>: AI_ i/II LE 2) L `/;^ RL -- fi._`,': K f. I J';K ( J: Ji.,Uf Lf J LL , ^, 1i f', 1 uc R A.. - , L h 20 At ,,_ LOVE vBF, R- r I BRIJ R? : i s N 1'U(, : ( _`! 'E"CUE 200 LBS/ACRE, t:+r ITEE RYE 53 M Wag WAA F We1/�\ ffik \ TABLE 24 Maintenance Fertilization for Permanent Seedings TABLE 26 Seeding Mixture TEMPORARY SEEDINGS BY RATES, DEPTHS, AND DATES i Lbs. per Seeding Rate Plantingdepth 36 Seeding zones 37 and Seeding Date 38 SpeciesZZ Per Lbs/1000 7o and 7b 6b 6a and 5b 11.5 acre Sq. ft (Inches) 2/1- 5/1- 8/15- 3/1- 5/1- 8/15- 3/15- 6/1- 8/1- fall is desired. Crownvetch 4/30 8/14 11/30 4/30 8/14 11/15 5/31 7/31 10/31 Choose one: ment and every 4-5 BY Birdsfoot trefoil BY years thereafter. BY Barley 2.5 bu. 2.80 1-2 X - 10/15 X - 10/15 X - 10/1 Oats 3 bu. 2.21 1-2 X - - X - - X - - Rye39 2.5 bu. 3.22 1-2 X - X X - X X - X Barley or following establish- occasional mowing is fairly uniform ment and every 3-4 desired, and fall plant distributlion Rye Plus 150 lbs. 3.45 1 X X 10/15 X X 10/15 X X 10/1 Foxtail Red & chewin(,gs X X X X X X X X X millet40 December, and closer than 3" 20-10-10 100 2.3 Y Ma 20 -June -30, for fescue. Weeping lovegrass4l 4 lbs. 0.09 1/4-1/2 - X - - X - - X - Annual ryegrasS 50 lbs. 1.15 1/4-1/2 X - 11/1 X - 11/1 X - 8/15 Millet42 50 lbs. 1.15 1/2 - X - - X - - X - 36 Applicable on slopes of 3:1 or flatter 37Z Refer to figure A - Adopted from USDA, ARS Miscellaneous Publication #1475, January 1990 38 Between fall and spring seeding dates, use mulch only if ground is frozen and reseed when thawed 39 May be used as a nurse crop for late fall/early winter permanent seedings, add 56 lbs/ac. to the permanent seeding mixture 40Z Maryland State Highway Administration Temporary Seed Mix May be used as a nurse crop for mid -summer permanent seedings. Add 2 lbs/ac A1Z to permanent seed mix. May be used as a nurse crop for mid -summer permanent seedings. Add 10 lbs/ac. 42 to the permanent seeding mix. INFORMATION FROM TABLE 3.32-C OF THE VA ESC HANDBOOK IS PROVIDED BELOW FOR SEEDING SELECTION TOTAL LBS. PER ACRE MINIMUM CARE LAWN 200-250 LBS -COMMERCIAL OR RESIDENTIAL 90-100% KENTUCKY 31 OR TURF -TYPE TALL FESCUE 0-10% IMPROVED PERENNIAL RYEGRASS 0-10% KENTUCKY BLUEGRASS GENERAL SLOPE (3:1 OR LESS) 128 LBS KENTUCKY 31 FESCUE 2 LBS RED TOP GRASS 20 LBS SAEASONAL NURSE CROP ** ** USE: SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW: MARCH, APRIL THROUGH MAY 15TH ANNUAL RYE MAY 16TH THROUGH AUGUST 15TH FOXTAIL MILLET AUGUST 16TH THROUGH SEPTEMBER, OCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY WINTER RYE FERTILIZER (10-20-10 OR EQ) SHALL BE APPLIED AT THE RATE OF 1000 LBS/ ACRE. AGRICULTURAL LIME SHALL BE APPLIED TO SEEDBEDS AT TTHE RATE OF 90 LBS/ 1000 SQ. FT. SUGGESTED TEMPORARY SEEDING MIXTURE FFR I } r 1 0 ?0` 10 1,000) 1 3';/'^(C�. r t C ' C ,r ' t oR �J\i `i0: ANNUAL 10 ,,,I , 1.:N ? _ 100 ..BS ; /ACRE E EE;E J. � r_ ?•.('E..L ..SU. ;! r,l-. L IU`) 1 r'. /!`A.0 \E MA Y�': r E, ,r`; �r it l_ E.1 LBS/ACRE HEr, OP -:10 1 _. E 1, 1, EE ;A E I ION A N DIMEN I • OIN f ;Ul IAN401300K. SUGGESTED PERMANENT SEEDING MIXTURE I`_/ACE:_ __ E:=};11U!ZLi;'; ;0 2)0 Iii 1;()00 L= ;1A ,I ,4A r "I ,. I,E I (,'K1' >1 E _:;:1 I- '200 LL 1CRE, r,riiJLi ,L RYE 2 i Lw %<1( RE '�.1-`�`( 1rG-A!;!) I.. 4<E: J'l1"Ky '1 ::=1 L - )r) LE`_;iA,CE�C; ^i=;>: AI_ i/II LE 2) L `/;^ RL -- fi._`,': K f. I J';K ( J: Ji.,Uf Lf J LL , ^, 1i f', 1 uc R A.. - , L h 20 At ,,_ LOVE vBF, R- r I BRIJ R? : i s N 1'U(, : ( _`! 'E"CUE 200 LBS/ACRE, t:+r ITEE RYE 53 M Wag WAA F We1/�\ ffik \ TABLE 24 Maintenance Fertilization for Permanent Seedings Use Soil Test Recommendation or Rates Shown Below Seeding Mixture Formulation Lbs. per Lbs. per Time Mowing Acre 1000 sf Tail fescue makes 10-10-10 500 11.5 Yearly, or as needed *Not closer than 3" up 70% or more or if occasional mowing of cover. 30-10-10 400 9.2 fall is desired. Crownvetch Spring the year Do not mow Service lespedleza 0-20-0 400 9.2 following establish - crownvetch ment and every 4-5 Birdsfoot trefoil years thereafter. Fairly uniform Fall the year Not required. not closer than 4" if stand of tall fescue & serwice 5-10-10 500 11.5 followingestablish- occasional mowing is lespedeza, or ment and every 4-5 desired, and then in birdsfoot trefc)il. years thereafter. fall after seed has matured. weeping lovegrrass Spring the year Not required. not closer than 4" if & serice lespe:deza 5-10-10 500 11.5 following establish- occasional mowing is fairly uniform ment and every 3-4 desired, and fall plant distributlion years thereafter. after sericea has matured. 20-10-10 250 5.8 September, Mow no closer than Red & chewin(,gs 30 days later 2" for red fescue fescue, Kentucky and Ky bluegrass; bluegrass: hard fescue mixture: December, and closer than 3" 20-10-10 100 2.3 Y Ma 20 -June -30, for fescue. if needed. 111111r��LTH pF L j� ?,t WILLIAM J. LEDBETTER Lic. No. 1507-8 �11/vo SURNE0o:/ A REVISIONS COUNTY COMMENTS AUGUST 23, 2016 DATE May 2, 2016 SCALE CONTOUR INTERVAL FILE NUMBER 8053 SHEET 4Of5 REVISIONS COUNTY COMMENTS AUGUST 23, 2016 DATE May 2, 2016 SCALE CONTOUR INTERVAL d z _ �� F" J z L1. tr > Lw > I- -9 -T-r 0 �_ 00 zQz ()J �C d 0 i" W 0 W j (3 U ¢ 00 0 W r� W FILE NUMBER $053 SHEET 5 Of 5 CULVERT SPECIFICATIONS STAIR STEPPING ill ;z LU cm LU LL 00 Wit LU �" ZI T SLOPES Runoff H dro ra h Y � 1� .. - ..... . CAUGHT E DEBRIS FROM SLOP Runoff Hydragraph Universal Rational Method Rainfall Distribution Type Rational Method � ABOVE IS _ Drainage Area 0.900 acre Peak Discharge (Qp) 2.8464 cfs .. BY STEPS - .: � _ - -� Runoff Coefficient 0.50 Time to Peak 0.30 hrs � Time of Concentration: 6.0 min Runoff Volume 0.08 acre-ft CD =, ---- --- RAI NAGE = I I - .��--� � _ I- Base Flaw: 0.0000 cfs Rainfall 1D: Charlottesville 1 SW �� Rainfall Intensity: 6.33 in/hr Rainfall Depth: 6,96 in -III-I I - -�'� Return Period: 10 YEAR Rainfall Duration: 1.10 hrs Design Parameters EACH LIFT OF THE FILL IS COMPACTED, BUT THE OUTER FACE OF THE SLOPE IS ALLOWED TO REMAIN LOOSE SO THAT THE Section ROCKS, CLODS, ETC. REACH THE NATURAL ANGLE OF REPOSE. Shape: Circular Material: HDPE DV 7� � I - WATER, SOIL AND FERTILIZER FILL SLOPE Tl � T�1 d T (1=1 I I-III-I � ARE HELD BY STEPS - PLANTS Diameter: 24.00 in III III=1 I I-) 11- CAN BECOME ESTABLISHED ON Mannings n: 0.0120 THE STEPS. Number of Barrels: 1 SOURCE: VA. DSWC PLATE. 3.29-3 SOURCE: VA, DSWC PLATE 3.29-1 Inlet Inlet Type: Square Edge with Headwall Ke: 0.50 GIS O D VING >�'L OI�E' S .. Inverts ---- \ Inlet Invert Elevation: 640.500 ft Outlet Invert Elevation: 640.000 ft -,--� - - Length: 40.000 ft Slope: 1.25 ,�. '° - ;�: ;::;-`�•,..•I I 1-1 I �- Culvert Calculation =) I -I 1, Discharge: 3.0000 cfs Headwater Elevation. 641.430 ft Tailwater Elevation: 0.000 ft • "�� �',,,, - �' �` _ _ � Downstream Velocity: 5.90 ftls _:;' •�`�;-t - -� I � I I= Downstream Flow Depth: 0.496 ft Flow Control Type; Inlet Control, Unsubmerged DOZER TREADS CREATE _ GROOVES PERPENDICULAR TO THE SLOPE.- - GROOVING IS CUTTING FURROWS I I ALONG THE CONTOUR OF A SLOPE.- S Culvert Rating Report IRREGULARITIES IN THE SOIL SURFACE CATCH RAINWATER AND PROVIDE SOME COVERAGE OF LIME, Discharge (cfs) Headwater (ft) Tailwater (ft) Exit Velocity (ft/s) Exit Flow Depth (ft) Control Type D� ��T nT� FERTILIZER AND SEED. 0.00 0.00 0.00 0.00 0.00 1� -jl d 0.50 640.81 0.00 3.36 0.19 Inlet Control, Unsubmerged _ 1.00 640.95 0.00 4.14 0.26 Inlet Control, Unsubmerged SOURCE: MICHIGAN SOIL EROSION AND SEDIMENTATION GUIDE PLATE. 3.29-4 SOURCE: VA. DSWC PLATE 3.29-2 1.50 641.06 0.00 4.68 0.32 Inlet Control, Unsubmerged 2.00 641.16 0.00 5.09 0.37 Inlet Control, Unsubmerged 2.50 641.24 0.00 5.44 0.41 Inlet Control, Unsubmerged 3.00 641.32 0.00 5.74 0.45 Inlet Control, Unsubmerged PIPE' O �I TLE' T CONDITIONS Headwater EL. 64`1.43 ' A A Embankment EL. 645.00' OUTLET PROTECTION SPECIFICATIONS 3dad ..._... ..._..._ _ ,:.._ .. ... ... ..._ ... Outlet Protection o PIPE OUTLET TO FLAT CULVERT � 1,25% AREA WITH NO DEFINED j� OUTFLOW CHANNEL 4 C.�. I f�IP<--24-„ 40.0' PLAN VIEW OP N ..18" MIN. DEPTH 24.0 " HDPE 1N%UNDERLYING F.F r' ' Outlet E�. Q10 = 2.85 cfs Inlet EL. 640.50 ((, , L a V40.00 APRON LENGTH = 18' oT- A ir Cr 06 % d SECTION A-A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER; A 3d a (MIN.) A da PIPE OUTLET TO WELL DEFINED CHANNEL PLAN VIEW L a o% • w � � �Q �� wO >J � a cv w W �� z ti d SECTION A -A L� FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION OF BASKET, OR CONCRETE. ��I,'rH 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3.18-4. 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. Source: Va. DSWC Plate 3.18-1 WILLIAM J. LEDBETTER Lic. No. 1507-B tq�0 SURN���� REVISIONS COUNTY COMMENTS AUGUST 23, 2016 DATE May 2, 2016 SCALE CONTOUR INTERVAL d z _ �� F" J z L1. tr > Lw > I- -9 -T-r 0 �_ 00 zQz ()J �C d 0 i" W 0 W j (3 U ¢ 00 0 W r� W FILE NUMBER $053 SHEET 5 Of 5 CULVERT SPECIFICATIONS STAIR STEPPING ill ;z LU cm LU LL 00 Wit LU �" ZI T SLOPES Runoff H dro ra h Y � 1� .. - ..... . CAUGHT E DEBRIS FROM SLOP Runoff Hydragraph Universal Rational Method Rainfall Distribution Type Rational Method � ABOVE IS _ Drainage Area 0.900 acre Peak Discharge (Qp) 2.8464 cfs .. BY STEPS - .: � _ - -� Runoff Coefficient 0.50 Time to Peak 0.30 hrs � Time of Concentration: 6.0 min Runoff Volume 0.08 acre-ft CD =, ---- --- RAI NAGE = I I - .��--� � _ I- Base Flaw: 0.0000 cfs Rainfall 1D: Charlottesville 1 SW �� Rainfall Intensity: 6.33 in/hr Rainfall Depth: 6,96 in -III-I I - -�'� Return Period: 10 YEAR Rainfall Duration: 1.10 hrs Design Parameters EACH LIFT OF THE FILL IS COMPACTED, BUT THE OUTER FACE OF THE SLOPE IS ALLOWED TO REMAIN LOOSE SO THAT THE Section ROCKS, CLODS, ETC. REACH THE NATURAL ANGLE OF REPOSE. Shape: Circular Material: HDPE DV 7� � I - WATER, SOIL AND FERTILIZER FILL SLOPE Tl � T�1 d T (1=1 I I-III-I � ARE HELD BY STEPS - PLANTS Diameter: 24.00 in III III=1 I I-) 11- CAN BECOME ESTABLISHED ON Mannings n: 0.0120 THE STEPS. Number of Barrels: 1 SOURCE: VA. DSWC PLATE. 3.29-3 SOURCE: VA, DSWC PLATE 3.29-1 Inlet Inlet Type: Square Edge with Headwall Ke: 0.50 GIS O D VING >�'L OI�E' S .. Inverts ---- \ Inlet Invert Elevation: 640.500 ft Outlet Invert Elevation: 640.000 ft -,--� - - Length: 40.000 ft Slope: 1.25 ,�. '° - ;�: ;::;-`�•,..•I I 1-1 I �- Culvert Calculation =) I -I 1, Discharge: 3.0000 cfs Headwater Elevation. 641.430 ft Tailwater Elevation: 0.000 ft • "�� �',,,, - �' �` _ _ � Downstream Velocity: 5.90 ftls _:;' •�`�;-t - -� I � I I= Downstream Flow Depth: 0.496 ft Flow Control Type; Inlet Control, Unsubmerged DOZER TREADS CREATE _ GROOVES PERPENDICULAR TO THE SLOPE.- - GROOVING IS CUTTING FURROWS I I ALONG THE CONTOUR OF A SLOPE.- S Culvert Rating Report IRREGULARITIES IN THE SOIL SURFACE CATCH RAINWATER AND PROVIDE SOME COVERAGE OF LIME, Discharge (cfs) Headwater (ft) Tailwater (ft) Exit Velocity (ft/s) Exit Flow Depth (ft) Control Type D� ��T nT� FERTILIZER AND SEED. 0.00 0.00 0.00 0.00 0.00 1� -jl d 0.50 640.81 0.00 3.36 0.19 Inlet Control, Unsubmerged _ 1.00 640.95 0.00 4.14 0.26 Inlet Control, Unsubmerged SOURCE: MICHIGAN SOIL EROSION AND SEDIMENTATION GUIDE PLATE. 3.29-4 SOURCE: VA. DSWC PLATE 3.29-2 1.50 641.06 0.00 4.68 0.32 Inlet Control, Unsubmerged 2.00 641.16 0.00 5.09 0.37 Inlet Control, Unsubmerged 2.50 641.24 0.00 5.44 0.41 Inlet Control, Unsubmerged 3.00 641.32 0.00 5.74 0.45 Inlet Control, Unsubmerged PIPE' O �I TLE' T CONDITIONS Headwater EL. 64`1.43 ' A A Embankment EL. 645.00' OUTLET PROTECTION SPECIFICATIONS 3dad ..._... ..._..._ _ ,:.._ .. ... ... ..._ ... Outlet Protection o PIPE OUTLET TO FLAT CULVERT � 1,25% AREA WITH NO DEFINED j� OUTFLOW CHANNEL 4 C.�. I f�IP<--24-„ 40.0' PLAN VIEW OP N ..18" MIN. DEPTH 24.0 " HDPE 1N%UNDERLYING F.F r' ' Outlet E�. Q10 = 2.85 cfs Inlet EL. 640.50 ((, , L a V40.00 APRON LENGTH = 18' oT- A ir Cr 06 % d SECTION A-A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER; A 3d a (MIN.) A da PIPE OUTLET TO WELL DEFINED CHANNEL PLAN VIEW L a o% • w � � �Q �� wO >J � a cv w W �� z ti REVISIONS COUNTY COMMENTS AUGUST 23, 2016 DATE May 2, 2016 SCALE CONTOUR INTERVAL d z _ �� F" J z L1. tr > Lw > I- -9 -T-r 0 �_ 00 zQz ()J �C d 0 i" W 0 W j (3 U ¢ 00 0 W r� W FILE NUMBER $053 SHEET 5 Of 5 CULVERT SPECIFICATIONS STAIR STEPPING ill ;z LU cm LU LL 00 Wit LU �" ZI T SLOPES Runoff H dro ra h Y � 1� .. - ..... . CAUGHT E DEBRIS FROM SLOP Runoff Hydragraph Universal Rational Method Rainfall Distribution Type Rational Method � ABOVE IS _ Drainage Area 0.900 acre Peak Discharge (Qp) 2.8464 cfs .. BY STEPS - .: � _ - -� Runoff Coefficient 0.50 Time to Peak 0.30 hrs � Time of Concentration: 6.0 min Runoff Volume 0.08 acre-ft CD =, ---- --- RAI NAGE = I I - .��--� � _ I- Base Flaw: 0.0000 cfs Rainfall 1D: Charlottesville 1 SW �� Rainfall Intensity: 6.33 in/hr Rainfall Depth: 6,96 in -III-I I - -�'� Return Period: 10 YEAR Rainfall Duration: 1.10 hrs Design Parameters EACH LIFT OF THE FILL IS COMPACTED, BUT THE OUTER FACE OF THE SLOPE IS ALLOWED TO REMAIN LOOSE SO THAT THE Section ROCKS, CLODS, ETC. REACH THE NATURAL ANGLE OF REPOSE. Shape: Circular Material: HDPE DV 7� � I - WATER, SOIL AND FERTILIZER FILL SLOPE Tl � T�1 d T (1=1 I I-III-I � ARE HELD BY STEPS - PLANTS Diameter: 24.00 in III III=1 I I-) 11- CAN BECOME ESTABLISHED ON Mannings n: 0.0120 THE STEPS. Number of Barrels: 1 SOURCE: VA. DSWC PLATE. 3.29-3 SOURCE: VA, DSWC PLATE 3.29-1 Inlet Inlet Type: Square Edge with Headwall Ke: 0.50 GIS O D VING >�'L OI�E' S .. Inverts ---- \ Inlet Invert Elevation: 640.500 ft Outlet Invert Elevation: 640.000 ft -,--� - - Length: 40.000 ft Slope: 1.25 ,�. '° - ;�: ;::;-`�•,..•I I 1-1 I �- Culvert Calculation =) I -I 1, Discharge: 3.0000 cfs Headwater Elevation. 641.430 ft Tailwater Elevation: 0.000 ft • "�� �',,,, - �' �` _ _ � Downstream Velocity: 5.90 ftls _:;' •�`�;-t - -� I � I I= Downstream Flow Depth: 0.496 ft Flow Control Type; Inlet Control, Unsubmerged DOZER TREADS CREATE _ GROOVES PERPENDICULAR TO THE SLOPE.- - GROOVING IS CUTTING FURROWS I I ALONG THE CONTOUR OF A SLOPE.- S Culvert Rating Report IRREGULARITIES IN THE SOIL SURFACE CATCH RAINWATER AND PROVIDE SOME COVERAGE OF LIME, Discharge (cfs) Headwater (ft) Tailwater (ft) Exit Velocity (ft/s) Exit Flow Depth (ft) Control Type D� ��T nT� FERTILIZER AND SEED. 0.00 0.00 0.00 0.00 0.00 1� -jl d 0.50 640.81 0.00 3.36 0.19 Inlet Control, Unsubmerged _ 1.00 640.95 0.00 4.14 0.26 Inlet Control, Unsubmerged SOURCE: MICHIGAN SOIL EROSION AND SEDIMENTATION GUIDE PLATE. 3.29-4 SOURCE: VA. DSWC PLATE 3.29-2 1.50 641.06 0.00 4.68 0.32 Inlet Control, Unsubmerged 2.00 641.16 0.00 5.09 0.37 Inlet Control, Unsubmerged 2.50 641.24 0.00 5.44 0.41 Inlet Control, Unsubmerged 3.00 641.32 0.00 5.74 0.45 Inlet Control, Unsubmerged PIPE' O �I TLE' T CONDITIONS Headwater EL. 64`1.43 ' A A Embankment EL. 645.00' OUTLET PROTECTION SPECIFICATIONS 3dad ..._... ..._..._ _ ,:.._ .. ... ... ..._ ... Outlet Protection o PIPE OUTLET TO FLAT CULVERT � 1,25% AREA WITH NO DEFINED j� OUTFLOW CHANNEL 4 C.�. I f�IP<--24-„ 40.0' PLAN VIEW OP N ..18" MIN. DEPTH 24.0 " HDPE 1N%UNDERLYING F.F r' ' Outlet E�. Q10 = 2.85 cfs Inlet EL. 640.50 ((, , L a V40.00 APRON LENGTH = 18' oT- A ir Cr 06 % d SECTION A-A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER; A 3d a (MIN.) A da PIPE OUTLET TO WELL DEFINED CHANNEL PLAN VIEW L a o%