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HomeMy WebLinkAboutSW6091006_Plansheets_20100108n 7 ***SAFETY PAYS' 1 v 10 _'y1 9 FA R. 250 0 500 SCALE IN FEET 0 5 n s=� STABO LOOP 0 LAT N35.1108 rl LONG W79.0064 72- J MCvoC:l,_:7' SITE LOCATION MAP - FORT BRAGG, N.C. SCALE: 1 "=500' o C-1 STORMWATER MANAGEMENT PLAN FOR SOF INDOOR BAFFLE RANGE FORT BRAGG, NORTH CAROLINA OAAG 010e 9 83J 08:1-8N3Q 5000 0 10000 SCALE IN FEET VICINITY MAP - FORT BRAGG. N.C. SCALE: 1 "=10000' INDEX OF SHEETS SHEET NO. DESCRIPTION C-100 CIVIL INDEX, VICINITY AND LOCATION MAP C-103 GRADING/EROSION CONTROL PLAN C-104 STORMWATER MANAGEMENT PLAN C-500 EROSION CONTROL DETAILS su6o9 00� e.�� C-501 EROSION CONTROL DETAILS Sc� c<<oo 7 si.sj CONTACT PERSON SHOULD EROSION CONTROL ISSUES ARISE DURING LAND -DISTURBING ACTIVITY: MR. LEE P. WARD (910) 396-2301, EXT. 218 (910) 907-2420FAX PROJECT DRAINS TO PERSIMMON CREEK IN THE CAPE FEAR RIVER BASIN. PROJECT SITE SOILS ARE BaB - BLANEY LOAMY SAND 2 TO 8 PERCENT SLOPES TOTAL DISTURBED AREA = 2.50 ACRES CAR0�i��% O, OFFS i� AL • •r' 036724 - US Army Corps of Engineers Savannah District Q W Q Z� Z —�O ;ZQ -VU U>O � J 37 U O Lt LH a o �../ coo 0(5 0009 W z z om � CO) Sheet reference number. C-100 Sheet of XX is NCa ***SUPPORT VALUE ENGINEERING - IT PAYS*** ""SAFETY PAYS' I I A I B I c I D I E I F I _ G _ I H I I I 1 LEGEND TEMPORARY CONSTRUCTION SEE DETAIL 2, SHEET C-500 LIMITS OF DISTURBANCE SILT FENCE SEE DETAIL 3, SHEET ii TEMPORARY SWALE — TS -' SEE DETAIL 1, SHEET C-500 325 CONTOUR ELEVATION LABEL TST#Z TEMPORARY SEDIMENT TRAP SEE DETAIL 4, SHEET C-500 2 :1 ROCK INLET SEDIMENT TRAP 13 TYPE'C' SEE DETAIL 3, SHEET C-501 ROCK SILT CHECK TYPE'R SEE DETAIL 1, SHEET C-501 SOIL STOCKPILE AREA ® PREFORMED SCOUR HOLE 3 SEE DETAIL 2, SHEET C-601 �g PERMANENT TRAPEZOIDAL GRASS CHANNEL SEE DETAIL 1, SHEET C-500 4 5 w WX EXISTING \STABO LOOP SIGNAL VAULT \ \ EXISTING \ \ ELECTRIC MANHOLE \ EXISTING WATERVALVE \\ WITH CONCRETEPAD \ EXISTING ASPHALT WOOD\ PARKING RETAEXISTINING'WALL BENCHMARK I \ IRON ROD ELEV=304.39 M BENCHMARK IRON ROD ELEV=310.81 e c EXISTING + CONSTRUCTION INSTALL SILT FENCE TRAILER BEHIND OFFICE / 1ZWx50'Lx8"D GRAVEL CONSTRUCTION �+ / ENTRANC / STOI rSIGN rI / 1 / l"o'oql - 00, /' WOODED---- / AREA- J / / DI URBE AREA / ROCK SILT #0S/ / C/H [ECK DA*- /050 - I ROCK 1NLETi /SEDI ENT(TRAP / j INSTALL $ILT FENCE FROM TST #1 ' - - 1 TO THE'NORTH AT THE -DOWNHILL - - _ - - - - - -- -- - - TOE 6F SLOPE.OF SWALE -/ /- _ 4'-EMERGENCY/' / - -- -- - / SPILLWAY - - - - - - - - - - - INSTALL SILT FENCE FR T #1-- - W TO THE SO AT - THE ATHE DOWNHILL _ i JOE OF -SLOPE OF SWALE EXISTING -- - - _ - -- -- - - - - EXISTING ONCR 305.7 CONCRETE PAD 305.8 6' C / 305.9 / I ASPHALT EXISTING 4" WOOD I PARKING RETAINING WALL I I\ I I 305.9 306 / EXISTING III -(! 105.8 WOOD SHEDSAD I I INFILTRATION 3 1 306.0 305..ON CONCRETE PC9 N=495193.3481 F II \ I � E=1997817.3966 N v 'INOOOFFE059 306.6 1 / m ' EXISTING- STEAM LINES I �v (AP LOTE CATION)I 1 EXISTING N td BUILDING I E2048 `7S� qw0wol`\ -'mIJ'--TS— 7"mom / DISTURBED LIMITS / �SRNtCREO to MN EXISTING WALK / BENCHMARK - - NAIL ELEV=303�2 WOODED , AREA / I i r - Cl /<r 306.7 - WAix ' i � J I ; ,NAIL / IELEV�300.22) SOIL STO KPILE AREA I I y1flTH SIL FENCE l / T II I I II II WETLANDS- - - - - - - - - - ;INFILTRATION 1 N=495237.814b - I - E=1997905.1031- INOILTRATIOWI 1A— c I I I 4952�4.3394 - ------ - ----- --- --- - j E=1118j880.655� - - / - - WOODED AREA INFILTRATION 2 N=49 151.1345 - - - - - - - 119 7$75,9307_ i DIF IiB�DILIOITS -- 18' EMERGENGIL - I SPILLWAY EXISTING PLK `, \ / I I / TEMPORARY - 'SILT FENCE \ \ \ I \ 1 I II I'111 / I � IWOOftiED I 1 1 AR�A / II TEMPORARY SEDIMENT TRAP SCHEDULE DRAINAGE AREA BASIN NO. (ACRES) DISTURBED AREA (ACRES) EMERGENCY Qt0 SPILLWAY (CFS) BASIN DIMENSIONS LENGTH REQUIRED REQUIRED SURFACE VOL. (CF) AREA TST#1 1 0.31 1 0,31 1.0 16. 01 X 1 32.0 1 X 4.50 1536 512 TST#2 1 2.29 1 2.05 1 6.9 1 2.01 X 1 84.0 1X 4.50 10584 1 3528 14101 4V 20' 0 40' too 0�-* (f 'P aj SCALE: 1"= 40'1 US Army Corps of Engineers Savannah District S N J 0 0) O Z u)g w WJO _Z F- 25 Z 9° V z zJ Z LLI U O mHL z U Of CD LU zM U. m O Sheet reference number. C-103 Sheet pf XX 'SUPPORT VALUE ENGINEERING - IT PAYS*** ***SAFETY PAYS*** I I A I B I C I D I E L F I G I H 1 2 3 4 'i u r'mh F2`��✓^',$qp (ri;�sc %+lra.'>s".�@�R, NOTE: CONTRACTOR SHALL TIE ROOF DRAINS TO DRAINAGE COLLECTION SYSTEM USING 12" PVC PIPE CONFORMING TO ASTM F949. MINIMUM PIPE SLOPE SHALL BE 1.00%. A� T.O.B.- - TOE OF SLOPE I III ►II I I III III I I III III I I ll Ir 111 I \Ao--------------- -----_ -- ------------- -- A� Eel M101 . u_ A -A DETAIL OF GRASSED STORMWATER INFILTRATION BASIN BASIN TOP BASIN TOP ELEVATION ELEVATION Natural Natural Ground Ground - - - - - - - - _ _ _ _ _ _ _ 02 0.5' MIN. 1. �t 3• OUTLET SIDE OF BASIN OUTLET SIDE OF BASIN TOP ELEV. SEE STORMWATER BASIN TABLE FOR BOTTOM ELEVATION INFILTRATION BASIN TABLE Basin # Bottom Length Bottom Width Bottom Eleletion Seasonal High Water Table Storage Ele%etion 1 96 1 20 1 301.40 1 TBD 304.30 LEGEND INFILTRATION BASIN O DROP INLET STORM PIPE PERMANENT GRASS SWALE SOIL TEST LOCATION e BENCHMARK BENCHMARK IRON ROD ELEV=310.81 e EXISTING CONSTRUCTION TRAILER Vk N 23.58'2W W w x 16.89 r EXISTING \ STABO LOOSO, SIGNAL VAULT ELECTRIC MANHOLE \ \ \ EXISTING WATE�VALVE \\ \ \ WITH CONCRETE PAD \ EXISTING ASPHALT / / \EXISTING VWp \ PARKING / `- �' II � ET INING WAILOD -,_ ,,,,. , , �I< I VI I rING NES ION GRADE TO DRAIN n Dh 305.9 . 3105.8 a� �I da �I II ad LAW x 6' CONCRETE WALK 305.7 � / 305.8 / —sob / C� ' .INFILTRATION 3 / j° --- N=495193.3481 GW4G E=1997817.3966 ..'00( FFER1E .5 S ALE #2 -/ 2' ASE TRAPEZOIDAL I as DI#3 DI CH W/ 3:1 SIDES LJ _ / DI#2 / ' 15' CANT 1305.7 - - aVA1 K /A / OHO— / L i / WOODED- i AREA- / / /SWALE# 2' BASS TRAPEZOIDAL DITCH W/ 3:1 §IDES LINE- / rtH 60 S ARM / 1 / 6 •Y , 'V W / t VA/ - - EXISTING---- --- ---- I f WETLAN_DsS - - - - " - - - -- - - - - - wINFILTRAT'ON1 -- - ------------- --- i�t WL N=495237.1149 - 305. 03 E=1997905.1031- `- _ — _ _ _ - - - - - E' Z p `I I W / IN#ILTRATIWIA- 00 Z/ I { I, % -495: .3394 - --------------- --- / E 1997880.6555 m / I I ' ' — — ' WOODED / P%�E4ORMED SCOUFLHQLE (TYP) AREA — — — I SE DET�1 L �HEET G501 — — - — — -- — — — — — — — — xce. V I ( / I / INS FILTF,0MON2 _ - - - - - - - - - N=49$151.1345- i t=19975,8307 X i' �1NG EN I \ PROJECT LIMITS , ooTV0 I EXIST�NG W LK (SWM AND DPW) I SO BENCHMARK/— } NAIL I I — I 10' OVERFLOW WEIR\, �RESi ELEV0300.221 I ELEV. 304.3 \ \ LINE WITH 100 Sal SRN ' $ 40 TONS CLASS'XIP RAP \ I S.J G 01 IV" i. 8.. b C io4 BENCHMARK - - - J 1 NAIL j ELEV=303�2 / WOODED / AREA / / / II 1 1 I WOOED I li AREA 1 iLL 9 SCALE: 1 "= 40'-0" US Army Corps of Engineers Savannah District, i i LU 0 J �M O J u. ° Z U 00 C z LL m Nw O Sheet reference number. C-104 Sheet 9f XX 31 ***SUPPORT VALUE ENGINEERING - IT PAYS*** ***SAFETY PAYS*** A I B I G I D _ I E I IF I G I H 2 Kj 0 5 FORT BRAGG SEEDING SPECIFICATION: 1. AREA WILL BE TILLED TO 4" DEPTH 2. APPLY LIME AT 70 POUNDS PER 1000 SQUARE FEET, OR 1.5 TONS PER ACRE 3. APPLY 10-20-20 FERTILIZER AT A RATE OF 850 POUNDS PER ACRE OR 20 POUNDS PER 1000 SQUARE FEET. THE FERTILIZER SHOULD BE EITHER SLOW TIME RELEASE OR APPLIED IN TWO APPLICATIONS, HALF AT TIME OF PLANTING AND THE SECOND HALF AFTER PERMANENT SEED GERMINATES. 4. THE LIME AND FERTILIZER WILL BE WORKED INTO THE TOP 2 TO 4 INCHES OF SOIL PRIOR TO SEEDING. 5. SEED MIX AND RATE: PERMANENT SEEDING "COOL SEASON": PLANTED BETWEEN 1 SEPTEMBER AND FEBRUARY 28 50 POUNDS PER ACRE SOFT RED WINTER WHEAT (TRITICUM SPELTA). NO RYE GRASS 25 POUNDS PER ACRE COMMON BERMUDA (CYNODON DACTYLON), HULLED 25 POUNDS PER ACRE COMMON BERMUDA (CYNODON DACTYLON), UNHULLED 'WARM SEASON': PLANTED BETWEEN 1 MARCH AND 31 AUGUST 50 POUNDS PER ACRE GERMAN (SETARIA ITALICA) , BROWN TOP (SETARIA ITALICA), OR FOX TAIL MILLET (BRACHIARIA RAMOSUM) 50 POUNDS PER ACRE COMMON BERMUDA (CYNODON OACTYLON), HULLED TEMPORARY SEEDING "COOL SEASON': PLANTED BETWEEN 1 SEPTEMBER AND FEBRUARY 28 120 POUNDS PER ACRE SOFT RED WINTER WHEAT (TRITICUM SPELTA) "WARM SEASON": PLANTED BETWEEN 1 MARCH AND 31 AUGUST 65 POUNDS PER ACRE GERMAN (SETARIA ITALICA), BROWN TOP (SETARIA ITALICA), OR FOX TAIL MILLET (BRACHIARIA RAMOSUM) STRAW MULCH: 4,000 POUNDS PER ACRE. THE GROUND SHOULD BE COMPLETELY COVERED WITH NO BARE SPOT LARGER THAN A QUARTER, THEN TACKED WITH EMULSIFIED ASPHALT. EMULSIFIED ASPHALT SHALL BE APPLIED AT A RATE HEAVY ENOUGH THAT THE ENTIRE AREA APPEARS BLACK IN COLOR. HYDROSEEDING: HYDROSEEDING SHALL ONLY BE ALLOWABLE ON SLOPES STEEPER THAN 1 HORIZONTAL TO 1 VERTICAL. STEPS 1 THROUGH 4 MUST BE COMPLETED PRIOR TO HYDROSEEDING. HYDROSEEDING SHOULD BE APPLIED IN TWO APPLICATIONS. THE FIRST APPLICATION WILL CONSIST OF 113 OF THE MULCH AND 2/3 OF THE SEED AND THE SECOND APPLICATION WILL CONSIST OF 213 OF THE MULCH AND 1/3 OF THE SEED. THE MULCH WILL INCLUDE A TACKIFIER AND WILL BE APPLIED AT A RATE OF 2,000 POUNDS PER ACRE OR THE MANUFACTURER'S RECOMMENDATION, WHICHEVER IS HIGHER. 6. UPON COMPLETION OF THE PROJECT, PRIOR TO LEAVING THE SITE, THE WATER MANAGEMENT BRANCH SHALL BE NOTIFIED TO INSPECT THE PROJECT. POC MR. JACK WILSON AT 396-2301, EXTENSION 224. CONSTRUCTION SEQUENCE 1. OBTAIN PLAN APPROVAL AND OTHER APPLICABLE PERMITS. 2. FLAG THE WORK LIMITS. 3. HOLD PRECONSTRUCTION CONFERENCE AT LEAST ONE WEEK PRIOR TO STARTING CONSTRUCTION. THE C.O.E. ENVIRONMENTAL SPECIALIST SHALL BE NOTIFIED OF THE DATE, TIME AND LOCATION OF THE MEETING BY CALLING (910) 396-1211 EXT. 223. 4. INSTALL TEMPORARY CONSTRUCTION ENTRANCE. 5. INSTALL TEMPORARY SWALES AS SHOWN ON PLANS. 6. INSTALL TEMPORARY SEDIMENT TRAPS. 7. COMPLETE SITE CLEARING AND GRUBBING. 8. COMPLETE FINAL GRADING OF GROUNDS, TOPSOIL CRITICAL AREAS, AND PERMANENTLY VEGETATE AND MULCH. GROUNDCOVER SHALL BE PROVIDED ON EXPOSED SLOPES WITHIN 21 CALENDAR DAYS FOLLOWING COMPLETION OF ANY PHASE OF GRADING. 9. ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE INSPECTED WEEKLY AND AFTER RAINFALL EVENTS. NEEDED REPAIRS WILL BE MADE IMMEDIATELY. 10. ENSURE ALL SWALES AND TEMPORARY SEDIMENT TRAPS ARE CLEARED OF CONSTRUCTION DEBRIS AND EXCESS SEDIMENT. 11. AFTER SITE IS STABILIZED, REMOVE ALL TEMPORARY MEASURES AND INSTALL PERMANENT VEGETATION ON THE DISTURBED AREAS WITHIN 15 WORKING DAYS OR 90 CALENDAR DAYS OF COMPLETION OF CONSTRUCTION. 12. ESTIMATED TIME BEFORE FINAL STABILIZATION-2 MONTHS DIVERSION DIKE IN FILL SECTION (GRASS LINED SWALE) 2' AIl D=1.5'(MIN) (MIN) T GROUND 0'-1' BASE \ PROPOSED FINISHED (Not to Scale) GRADE GRASS SWALE SCALE: NTS 2" TO 3" COARSE AGGREGATE STONE 8 IN. MIN. DEPTH - EXISTING ROADWAY 1 g" L MIN T DIVERSION DIKE IN CUT SECTION (GRASS LINED SWALE) D- (MIN) EXISTING �•� GROUND 40 r PROPOSED FINISHED 0'-1' BASE GRADE ( Not to Scale) RARY & PER 3,600 CU FT/ACRE OF DISTURBED AREA NOTES: 1. TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGE TRUCKS SHALL BE PROVIDED. 2. ENTRANCE(S) SHOULD BE LOCATED TO PROVIDE FOR UTILIZATION BY ALL CONSTRUCTION VEHICLES. 3. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR DIRECT FLOW OF MUD ONTO STREETS. PERIODIC TOPDRESSING WITH STONE WILL BE NECESSARY. 4. ANY MATERIAL TRACKED ONTO THE ROADWAY MUST BE CLEANED UP IMMEDIATELY. S. GRAVEL CONSTRUCTION ENTRANCE SHALL BE LOCATED AT ALL ��� POINTS OF INGRESS AND EGRESS UNTIL SITE IS STABILIZED. FREQUENT CHECKS OF THE DEVICE AND TIMELY MAINTENANCE ^`I MUST BE PROVIDED. NEW CONSTRUCTION 70' MIN. FILTER FABRIC UNDER STONE TEMPORARY GRAVEL CONSTRUCTION ENTRANCE SCALE: NTS TOP AND BOTTOM STRAP SHALL BE 10 GAUGE MIN. VAIN NOTES: 1. WIRE SHALL BE A MINIMUM OF 32" IN WIDTH AND SHALL HAVE A MINIMUM OF 6 LINE WIRES WITH 12" STAY SPACING. 2. FILTER FABRIC SHALL BE A MINIMUM OF 36" IN WIDTH AND SHALL BE FASTENED ADEQUATELY TO THE WIRE AS DIRECTED BY THE ENGINEER. 3. STEEL POST SHALL BE 5'-0" IN HEIGHT AND BE OF THE SELF -FASTENER ANGLE STEEL TYPE. 8' MAX. WITH WIRE ►►►{{{ G'MAX WITHOUT WIRE) I MIDDLE AND VERTICAL WIRES SHALL BE 12%GAUGE MIN. FILTER FABRIC FILTER FABRIC --� COMPACTED FILL TEMPORARY SILT SCALE: NTS STEEL POST - Z-0" DEPTH EXTENSION OF FABRIC AND WIRE INTO TRENCH 12" THICK #57 WASHED STONE PLACED ON INSIDE FACE 1 1.6 SEDIMENT) (J STORAGE ZONE COIR BAFFLES ON STEEL POSTS u� FILTER FABRIC 1r CLASS B RIP RAP 5'-0" MIN. 2:1 SIDE SLOPE MAX. 4:1 SIDE SLOPE MAX. TER FABRIC OVERFILL 6" FOR SETTLEMENT EMERGENCY BY-PASS 6" BELOW SETTLED TOP OF DAM NOTES: STONE SECTION 1. INSPECT BASINS AFTER EACH PERIOD OF SIGNIFICANT RAINFALL. REMOVE SEDIMENT AND RESTORE THE TRAP TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN DEPTH OF THE TRAP. REPLACE CONTAMINATED PART OF GRAVEL FACE. 2. REPLACE ANY RIP RAP DISPLACED FROM THE SPILLWAY IMMEDIATELY. 3. AFTER THE SEDIMENT PRODUCING AREAS HAVE BEEN PERMANENTLY STABILIZED REMOVE THE STRUCTURE AND ALL UNSTABLE SEDIMENT. SMOOTH THE AREA TO BLEND WITH THE ADJOINING AREAS AND STABILIZE PROPERLY. 4. DIRECT EMERGENCY BYPASS TO NATURAL, STABLE AREAS. LOCATE BYPASS OUTLET SO THAT FLOW WILL NOT DAMAGE THE EMBANKMENT. 5. WEIRS SHALL BE INSTALLED SO THAT FLOW IS DIRECTED AWAY FROM DOWNSLOPE DIVERSION DITCHES. 6. ALL TEMPORARY SEDIMENT TRAPS SHALL HAVE BAFFLES INSTALLED AS SHOWN. THE CONTRACTOR SHALL NOT DAMAGE ANY BAFFLES WHEN CLEANING SEDIMENT FROM THE TRAP. ANY DAMAGED BAFFLES SHALL BE REPLACED BY THE CONTRACTOR AT NO ADDITIONAL COST TO THE OWNER. 7. BAFFLES SHALL BE COIR FIBER ATTACHED TO W STEEL POSTS AT 4' SPACING. POSTS SHALL BE DRIVEN AT LEAST T INTO THE GROUND. COIR FIBER MAT SHALL BE ATTACHED TO STEEL POSTS WITH WIRE AND STAPLED INTO BOTTOM AND SIDE SLOPES OF BASIN WITH 12" STAPLES. COIR FIBER DIMENSIONS TRAP N0, MIN. CAPACITY CU. FT. DEPTH Fr. LENGTH Fr. WIDTH FT. WEIR LENGTH FT. 1 1,536 3.5 32 16 4 2 10,584 3.5 84 42 8 TEMPORARY SEDIMENT TRAP SCALE: NTS SWGo91��t. i.B.ld Bet c, s CONTACT PERSON RESPONSIBLE FOR EROSION CONTROL MEASURES: CRAIG LANTZ (910)396-2301 NOTE: IT IS AN ONGOING REQUIREMENT DURING ALL OPERATIONS TO INSPECT ALL EROSION AND SEDIMENT CONTROL DEVICES WEEKLY AND/OR AFTER ANY RAINFALL EVENT. PERFORM REQUIRED MAINTENANCE IMMEDIATELY. FOR THE PROPOSED INDOOR GUN RANGE AT FORT BRAGG. 931. c1 US Army Corps of Engineers Savannah District a w oA J / 0�/ I.I�, Z OQ Z ~ co LU V 0�/ w W Z LU 00 J2: O W u- Qz m0 Z U 00 LU o� Z m - coFco Sheet reference number: C-500 Sheet of XX **`SUPPORT VALUE ENGINEERING - IT PAYS***