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Home My WebLink About20052134 Ver 2_Stormwater Info_20120910® John Harri s, P. E. CONSULTING ENGINEER, INC. 5112 BUR OAK CIRCLE RALEIGH NC 27612 Transmittal Date: September 10, 2012 To: Annette From: Bryan Harris Subject: Gates at Ethan's Glen — Level Spreader Items: Two ( 2 ) sheets of revised plans Annette, 0- lLI0 Telephone (919) 789 -0744 Fax (919) 789 -0784 SEP 1 0 2012 DENR - WATER QUALITY Enclosed is two ( 2 ) sheets of the revised plans in regards to the Level Spreader at the Gates of Ethan's Glen. Added to the sheets are the sizes of the proposed pipes. Should you have any questions, please feel free to contact us at the office. Thank you. Bryan A. Harris Senior Technician Harris Engineering 5112 Bur Oak Circle Raleigh, NC 27612 (919) 789 -0744 (office) (919) 789 -0784 (fax) Encl AIV eke 4511 N RESHAPE AND FORM NCDOT 9A ROAD DITCH USE NORTH AMERICAN SC150 WITH STAPLE \ \\ \ v� v PATTERN D OR EQUILAVENT \ \ \ \ EXISTING IINU <\ STORMWATER NEUSE EASEMENT RIPARIAN BUFFER EXISTING SEDIMENT gal BASIN TO BE REMOVED NO NO 1\\al O'.JED YARD INLET 11J_ PnDr)qp'r) �kAPI*) INLET 4(z JQ It 8 RC If TOP HEADWALL = 322.95 UIIUN tJLU`I,,r,. A RIM EL.=+/-328'(MUST BE REGRADED) (0.64' HIGH) RIM EL.=3 315.77 INVERT EL.=326' ('4 INV IN / INVERT EL.=323.36' DITCH BLOCK "B" 1/ 41. (FUTURE 0.48' HIGH)—,, C-j XISTING GRADE STANDARD BYPASS DITC`.I USE NORTH AMERICAN SC150 GRADE STANDARD BYPASS DITCH STORMWATER 07 fl C) 10 USE NORTH AMERICAN SC150 WITH STAPLE PATTERN D OR EASEMENT C WITH H STAPLE PATTERN D OR EQUILAVENT I / EQUILAVENT y ICY, 11 It 7 wo 4, V3 A LIG' POLE y C C )ONC Ec, U" L i D 4\1 CL. (w T k rTs F (p qn -_ / t % TACKti 1 77 't C L PUBUC 50 C + C CO�M. BOX > CABLE P,/ — — — — — — — — GRADE STANDARD DITCH _.j — WITH USE NORTH AMERICAN DS75 C� r INV =y 321 I---- / — LIGHT POLE STAPLE PATTERN D OR EQUILAVENT jjjjjjjl� FORJEBAY PHONE PED fill 3i INV = 321 h, too 0) 32 EX\I�TIN(3' 6 FOREBAY I -�X$TING ELEV 321.75 5 8 LF\ @ 2.8 6 % If _p Na DTI TO I �A EMENT I =H1 I I' u 1 I p, it F v 11 1'j CONSTRUCTION SEQUENCE It 1) SURVEY LOCATE BORE END POINTS 2) CONDUCT ROAD BORE PER PLANS 1-11-11 I-E- 3) CONSTRUCT INLET BOXES, SHAPE DITCHES AND _4 A�' (? 7 INSTALL DITCH BLOCKS. LEVEL W& 30' I TOP HEADWALL )21 50 INV OUT 314.\1 7 4) STABILIZE WTIH LINER, SEED AND MULCH. SPREADER -2 e LEVEL A/- BUILDING BUFFER 5) SURVEY CLEARING LIMITS FOR LEVEL SPREADERS. 501 x 14 "Till SPREADER -1 -4, A 6) STAKE AREA FOR CONSTRUCTION AND INSTALL EROSION 11 IZZ", I CONTROL DEVICES. 50' -Z": 7) CLEAR CONSTRUCTION SITE AREA 30' VEGETATIVE -.7 FILTER STRIP I (ib 8) CONDUCT GRADING OPERATIONS. X . ........ 9) CONSTRUCT CONCRETE LEVEL SPREADER EDGES. Tiz C" 10) INSTALL RIPRAP FOREBAYS 11) FINE GRADE, LINE SEED AND MULCH LEVEL FOREBAY SILT S If ;!'j j I SPREADERS FENCE R"! -2 AND LS-3 3d 12) CONSTRUCT BYPASS CHANNELS FOR LS Vj INSTALL 9' LONG 13) RESTABILIZE ALL DISTURBED AREAS DISSIPATOR TO BOTH,/� 0,, 30' VEGETATIVE I 6Y I FILTER STRIF SIDES OF THE EXISTING SEDIMENT BASIN (USE Toy 41 1 1 1 TA, AV, CLASS 1 MED RIPRAP) Sl�� FENCE 30' [ILL STING SE MENT LEVEL PREA R -3'T BA IN,, (SEE NOT U4 EXISTING NAT AL If If IWATERSH UFFER— I DRAINAGE W r r IL DO NOT GR)ADE GRAPHIC SCALE co 20 0 10 20 40 80 w z It IN FEET I inch = 20 ft. - - - - - - - - - - RSHED BUCK EXISTING PIPE —i , 8 ) DITCH BLOCK HEIGHT 'T 25 -- / ,\ / / f / INSTALL 9' LONG / a *NOTE* CONVERT SEDIMENT BASIN DAM TO FLOW DIVERSION DITCH BLOCK PER INDICATED DIMINSIONS SEE FLOW SPLITTING METHOD THIS SHEET. 2' RECOMMENDED. BYPASS CHANNEL DETAILS A = 0.64' DISSIPATOR TO BOTH EXISTING PIPE SIDES OF THE INV OUT = 323.627 EXCESS RAIN FALL TOP B - 0.4F EXISTING SEDIMENT 1" RAIN FALL ( WATER QUALITY) ELEV = 324.75:��ELE) C - 0.78 ELEV BASIN (USE CLASS 1 323.78 'Z7 WEIR I F D -NIA MED RIPRAP) FALL I U 1'1 "V., ELEV EXCESS RAIN FALL 1" RAIN FALL (WATER QUALITY) "--PIPE UNDER ROAD TO LEVEL SPREADER DITCH BLOCK A + B INV OUT 323.62 6f "7 7 6' WEIR R\ *LINE WITH NORTH AMERICAN DS75 WEIR FOR EXCESS RAIN FALL \i4.t STAPLE PATTERN D OR EQUIVALENT. ELEV = 323.00 ,LINE WITH NORTH AMERICAN C125 STAPLE PATTERN D OR EQUIVALENT. B-B FLOW SPUTTER AT DITCH BLOCK C FLOW SPLITTING METHOD % % O 51 CAR 'm. .:Wz • F SEDIMENT BASIN 325 C> 0 FLOW SPUTTER AT DITCH BLOCK C FLOW SPLITTING METHOD *" 441111ol % % O 51 CAR 'm. .:Wz *" 441111ol = 323.78 `6" DIA RIPRAP ARMOR DITCHOUT TO LEVEL SPREADER EXCESS RAIN FALL ELEV = 324.75 28'- ELEV = 321.50 �FOREBAY DITCHOUT TO LEVEL SPREADER • wil L "mw O Z • F SEDIMENT BASIN 325 C> 0 c, 00 .4 El bA • u C � C13 U = 323.78 `6" DIA RIPRAP ARMOR DITCHOUT TO LEVEL SPREADER EXCESS RAIN FALL ELEV = 324.75 28'- ELEV = 321.50 �FOREBAY DITCHOUT TO LEVEL SPREADER • wil L "mw O Z F SEDIMENT BASIN 325 C> 0 C � C13 -0 = 323.78 `6" DIA RIPRAP ARMOR DITCHOUT TO LEVEL SPREADER EXCESS RAIN FALL ELEV = 324.75 28'- ELEV = 321.50 �FOREBAY DITCHOUT TO LEVEL SPREADER • wil L "mw O F SEDIMENT BASIN 325 OR EXCESS RAIN SE AS DITCH BLOCK `6" DIA RIPRAP ARMOR DITCHOUT TO LEVEL SPREADER EXCESS RAIN FALL ELEV = 324.75 28'- ELEV = 321.50 �FOREBAY DITCHOUT TO LEVEL SPREADER • wil L "mw ti V m RESHAPE AND FORM NCDOT <0 vl ROAD DITCH USE NORTH ff m AMERICAN SC150 WITH STAPLE X,' PATTERN D OR EQUILAVENT -EXISTING STORMWATER NEUSE EASEMENT _ BUFFER j EXISTING SEDIMENT \BASIN TO BE REMOVED ROPOSED YARD INLET DnOnCEn VADn INLET C/ 4 KK Z ,�ZNZ Q RC If It LEVEL SPREADER —2 It .0 FOREBAY INSTALL 9' LONG DISSIPATOR TO BOTH ' / SIDES OF THE EXISTING DITCH BLOCK A TOP HEADWALL = 322.95 no, RIM EL.=+/-328'(MUST BE REGRADED) INV IN = 315.77 (0.64' HIGH) RIM EL.=348 INVERT EL.=,326' INVERT EL.=323.36' DITCH BLOCK "B" (FUTURE 0.48' HIGH) CA, GRADE STANDARD BYPASS DITCH XISTING USE NORTH AMERICAN 'SC150 GRADE STANDARD BYPASS DITCH STORMWATER E WITH STAPLE PATTERN t OR USE NORTH AMERICAN SC150 EASEMENT D WITH STAPLE PATTERN D OR EQUI.LAVENT EQUILAVENT T > 06mom— N, > _Q tlNl q Maam j 0_1 161- A �LIGHT POLE 0) grgo L TACKErTs FONC (114 UBUC R/W 51 Ck IML Rn r f r r 'CABLE TV GRADE STANDARD ITCH J WITH D C� f — — — — — — USE NORTH AMERICAN DS75 (NV 321 STAPLE PATTERN D OR EQUILAVENT LIGHT POLE If -PHONE ED r rial FS' ENCE INV 321 -PHONE 1 w I 1 11 Q0 07 N<STING 6 I I X$TING ELEV 321.75 58 L-F @ 2.86% iv t I �KIVIIVVA I LK _5=7 -i 1FL_1 I �A EMENT }iii T IU k 'v VV 1 E=l H=4H IV 7N, y �po T OP HEADWALL 321.50 INV OUT 314.V1 7 LEVEL A/- 1 5o, SPREADER-1 7r !Il V, 50 30' VEGETATIVE IN, If X FILTER STRIPS ,T If Cb It SILT FENCE S_ 30' VEGETATIVE FILTER STRIP _1 It 4 101 I I I V I V = SCALE: 1w = 30' HORIZONTAL 1 = 3' VERTICAL PIPE -1 20 GRAPHIC SCALE 10 20 40 ( IN FEET ) 1 inch = 20 ft. 80 am I je ON FIX 8 0- 4N Cq r.- IDD 00 tD ;z C9 V] C-4 > 0 =0 O 0 a� c� F = Lw,06- n I 0- C> ;z C9 C-4 > 0 =0 O 0 a� c� F = Lw,06- n I