20070348 Ver 2_Site Plan_20070329

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03
~ A T #1 IMP C
p , r R{~AD
SEE DETAIL.
~ t1~ 1~ i ~ IMPACT #2
~ ~ o ROAD LINE LENGTH BEARING - l1 81.01 N77°37'16"W
n ~ {.~~y~ SEE DETAIL. 1°° q ~ p N01 5349 E L2 78.95 S77°52'40'1M
261.58' S01°38' ~ W 892.70 L3 89.06 S67°48'08"W
~ ~ SO L4 777.32 S44°21'01"W
CJ 30 tN PROPOSED GRAVEL L)RIVE 15+00 18+00 1 + 586. Y ( r Z
14+ -H._,.. - 19 00 20+00 ro ~ - 23 00 }
12.*40 ~ - ---I--~. _ _ _ 24`00 ~ ._...,..I,._. 24+pp o 0 713 ^ ~5 ~S.sa Sat°52~56"w j ~2~~J~ JON~~IYT ~O~c~ ~ O IDPOINT SUBSTATION PAD oy
g1k00 ~ may' - -~~0 y STA 29+66.44 a ~ q = LL
+OA BEGIN INTERMITTENT 10 STREAM PER NCDWQ ~ 2~p ~ .ny m
~2~~ ` CHAIN LINK
` FENCE ze~~ ~y BEFORE YOU DIG!
M M 29+~~ 30+ C9NTACT ONE•CALL CENTER
~ e ~ a 301 1311 W
5$4.60' m _ _ } O--"' 3~} 77.41 1-800.6324949 BEGW SUBSTATION PAD
STA 28+58.18 216.50' END SUBSTATION PAD to U) V C) N V-
STA 30+74.69
W ~uiw
GR,4VEL PAD FLOOD ZONE"AE" PER 0 Uo- wO oOw3nw
N06°o6~20°~ FEMA F.f.R.M. N0.37200&F800J &
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, ~ Pipe Sizing Warksh~et STREAMS AND WETLANDS IMPACTS TABLE U t1 ~
H ~ p T
f' _ _ STREAM MEANDER
i \ ` IMPACT STREAM NPE: LENGTH: CONSTRUCTION:
Q= The estimated design discharge (cfaJ ' C =The composfte runoff coefficient for the watershed ~ ~ ~ 7 PERENNIAL STREAM 90 LF -ROAD/CULVERT/RtPRAP s z d
k.~~-~. 2 INTERMITTENT STREAM 54 LF ROADlCULVERT/F2IPRAP I(25) =Rainfall intensity (nlhr) iarfhe designated eeturn period and time of concentration ' z q
..._v.,~.. 3 BEGIN INTERMITTENT A = W aiershed area (a c.) _ W
STEAM PER NCDWQ . , (I'EATUR~ B ~ FLAG B9 " - - - - TOTAL LAND DISTURBANCE = 3.59 AC. U U ~
~C Estimate C based on watershed content and soil type from U O Q O tL ~ Q: ~ eeQ~ C "j
PIPE #1 k1 o PIPE #2 ~ , r,~ 64 LF OF 48 CMP @ 1,83 /o E~1N Table 2 Rational Forumla C Values: (C 0.35 is a common estimate) s _ . . _ _ THE CONTRACTOR MUST LIMIT STREAM DISTURBANCE AND
. PRR o a - (NV. IN = 48$.80 EX x''7,2 LF OF 30 CMP @ 4.00 /,a a }125) > Fmd tc [L~3fH~ ~ 385 tc Time of eoncentraUon EMBED STREAM CULVERTS ACCORDING TO THESE PLANS. IF
ENV. OUT = 487.63 _ w STR INV. IN =485.10 N L Hydraulic length of ih e watershed (ft ~ STREAMS ARE IMPACTED BEYOND WHAT IS SHOWN, THEN o"gmzia°s.,
a INV. OUT = 482.22' 128,., H The elevation change of the watershed {8 ~ THE PROJECT MAY BE SUBJECT TO BIG MITIGATION FEES
1 PIPE # 4 µi Use tc to find rainfall intensity (m/hr) from graph FROM NCDWQ ANDlOR USACE. . .w ~ r. , ~
L { r~, r . 'Never use tc< 5 min
~.,t " ~ ~y r ~M A Calculate total area of watershed THE CULVERT MUST BE EMBEDDED BELOW 7HE STREAM std. m
~ ~ of ~ ~ 1 , ,?mot IpE #2 CHANNEL, TO ALLOW AQUATIC LIFE PASSAGE. MIN. *Yariables are RED° EMBEDDED DEPTHS ARE AS FOLLOWS:
PERENNIAL STREAM a _ _ _ _ _ _ _
~ ~.u r (FEATURE A }PER r . ; CULVERT DIAMETER: MINIMUM EMBEDDED DEPTH:
NCDWQ h ,.w.,.. j . . _ _
_ CLASS i3 RIP RAP C= ...0.23 L- td00ft 4. C=f. 0.19 L_ 745.fl LESS 0.3' _
w,.; r' ' CHANNEL LINING I(25) 7 8 in hr H- 41 `ft I(25} ' 8 5 in hr H= 39 fl 30„OR 0 5
15'L x 7.5'W x 18'Th _ _ A 20 ac tc= , _ 8 05:mm _ A 925 a,c ic= 3.96 mm_ ; co
,~°'f CLASS B R!P RAP Yr.y Q125~ ` 35.E cfs Q{25js 14.69:CTs _ _ _ 36" 0.6' _ _ . ~ 42" 0.7' N
C j. h , NANNEL dNENG r'~ ;•,=,r.5 _ ~ 24'L x 12'W x 18"Th , + , ; 48" 0.8' Iwo.
~ ~ _ . r ` a . y ' ~ 114 6 ~ j CaItUlflteC ,Local C 110 7.5 CalCUlate C Lacal C I 54"OR GREATER 1.0' l ) C6 C3y C L
,r ~ ; ~ ~ ~ ~ ` r' _ :__.....29 90 _ , _ %q.P avgd _ . w . , 0 95 Qj101°' 12.96 °k. P ave d . 1 ..:..__0 95 _i 150)= 8.5 °k Lawn 29 0.35 I(5~} 925 9o Lawn 5 0.35
r ~ Q(54~; PA.10 96 Pasture i 0 ~ „0.30 .4(50) 15.98 %a Pasture 0 0.3d IMPERVIOUS DATA: G co uj m ce)
i` r' _ I(100)- 9 25 j °fo Wuoded i ?0 0.17 I(100) 9.9 % Wooded 94 0 17 c X
I _.q(1~7_. 4255 __TOTAL. ? 0.23_ _Q(10Dj°.; 17.11.._. _TOTAL.__._. ..,._0.79.,_--.. EXISTING IMPERVIOUS AREA:n/a
X EXISTING IMPERVIOUS COVERAGE: 0 C
^'r Pipe S¢e (m) d8 Pipe Size (in) - 34" HW1D - ;0 63 HtMlD 0.75 PROPOSED IMPERVIOUSAREA IN ROADS: 126 C+/- 0 F5 > U
w _ fi Inv In (488 SO , _ , Inv. In 485.1 p ~ ANTICIPATED IMPERVIOUS AREA IN GRAVEL PAD: 1.09 AG a p (D Uce)0.) N
= Centar6ne Inv. = 488.32 j Centerline Inv. 483.5 ~ TOTAL ANTICIPATED IMPERVIOUS COVERAGE: 2.35 AC 115.00 AC (16 c6 C
d u«., ~ ~t.. r Inv. Out = .487.63 Inv, Out = 462.22 ~Nu?~
C Length (ft~= 6d. x ...__.Lengih = 72 _ ~ ~ NOTES:
OW POINT EE.EV ~ 493.79 LOl1V POINT LEV--= 495.71 ' Slupa = ,1.83°k ' Slope = 4.OD°k : _ QOM E
` 1~0 , . , _;I:O ~~POi T`STA~=~~14+24;13; • W N , 1 THIS D zo~5 N ,~0-
+ PV{ 5TA = 20+95.04 ~vl STA =14 ~a.2o . PvI ELEV - 49a.a2 > ~ Apron Size ¢xWXH) _ ;24'X7 X18" Apron Size (Lx'VVXH) - 15'x7.5'x18" ' PROPERLY IS LOCATE IN THE ROANOKE RIVER BASIN AND AN Stone Size (in.}= ~6' Stone Size (in.} = 6° UNREGULATED WATERSHED. U
PVi ELEV = 494.37. . ; , , ; . ,..A;D ,.10: 3.. I Thickness (in}_= ?18° j Thickness (in) = 18„ ` 'o
~ K =13.05 K=9.24; ? 2. THIS PROPERTY IS LOCATED IN FLOOD ZONE X AND AE" P TY.Ae R~p_Ra@ . ~Claes _b. . TYPe Rip._RaP ° class b _ ER FEMA AA co >
i,, ~,VC , 2A0;0 ~ . I FIRM N0.3720094800J & 3720093900) DATED 7-25-06 {PRELIM).
~ .Q ' V ....1 0 0 cv. _ _ , , 505 a a ~ ~ ety ~ ; ~ ~ ~ , ~ , ii; i I ,-TREE PROTECTION FENCE
. i~' CA ~ r t ' . ~ , . U.
. CV . W tlt ; . . 1 ~ - (OUTSIDE OF CHANNEL)
4°. ~ U v~ I O i s .,U- t,~ tv a, © ~ W t~ N TREEPROTEC170NFENCE b ~ ~ (OUTSIDE OF CHANNEL) 0
C1 . (V.....~W , . Q
' M 'd' * iq t„ , . _ . . _ a / , _ , ; RIPRAP APRON MUST CONFORM CL
? N U W 9 . U . . ..m i ~~~~y - 498 D STURB OF APRON, SO THAT NO GRADING
m ~ w. 0 ~ a s w pP Q ~0~~~ ' BEYOND IS NEEDED BEYOND THE APRON. Q 7 v 4 ~ ~
50 ' FENCE. EMBEDDED DEPTH DO NOT LL
R ~ 4,q •~O ~ ~ qgg-- RIPRAP APRON DISTURB W
0~ ~ „ram ~ : , ..N! '498 r BEYOND LM ZZ
~~ti ~ ~ Fp NOT TO SCALE. FENCE. ~ a r 2t 0
i ~ i; 49a SEE PLANS FORADDITIONAL INFORMATION. € ~ ~ ~ ~ e ~ ~ ~ • ..a W 7 F
s '498 i ti ~ CUWERTLENGTH ~ RIPRAPLENGTH ~ ~ MAR `L ~ ZOOS f 2 < C
_ pI i i
o ~ - ~ F TOTAL STREAM CHANNEL MEANDER DISTURBANCE LENGTH , ` ' J~~~ BENCH C 2
4 ~ LL
n . . . k 490 NCDWQ REQUIREMENTS: IMPACTS AT STREAM CROSSINGS - ..488....
w . . _ . . _ ~ , 4 2~
r. _ w W
LLJ W w z CL
. so 4 . F- F- wD
, Iw #1 .486_. 42~_~~~ 96~_~,~ 32.0„ Z p
4 F.4 AMP ` 1.$3°0 6 C~ Q 8 8.;.. 8 . ,I 3'-0" 30'-0"GRAVEL 3'-0" 5'-0" 0 2U)U) z
{NV. N 88.8a ` t . PIPE #2 ; . oi' ~a° ctti~ 4.aa~~o ~ SHOULDER SHOULDER DITCH j O w ©
721.E @ , . INV. iN = 485.10' . , 484..... ~ ~ 0.5°!0 0.5% 1 f_
INV. 0l1T = 482.22' 2% 2% 6/ - UJ w w L
3.7 21 L Q_ CL r--
G?~ C?,~"a. CO MQ MM
C~7 ~ ~ OAS~p CA 0~ ~ U G~ 0) ~ r m tb ~ t~ st d' 'd' 'd' ~ cry ~ pp d. M ~ 21 ~ TYPICAL SECTION FOR o TYPICAL SECTION FOR ROAD SUBSTATION PAD PROJECT NO.
1f> ~ lh d' ~ h. CO ~ CO tlS .mod. st *t tl'~d' ~ ~ N
06--3928
13+aa 14+00 15+Oo DRAWING NO.
21+00 22+00
+06-392R.dwg
i~ f
n i p T ~..SHEET 4 OF 5
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