19930673 Ver 1_Complete File_19930812

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
August 12, 1993
a ° o j
ED [F= Flk
Mr. W. Trent Anderson
County Maintenance Engineer
N.C. DOT.
P.O. Box 1551
Andrews, N.C. 28901
Dear Mr. Anderson:
Subject: Proposed fill
Road widening
Macon County
DEM Project #
in Wetlands or Waters
and improvement, SR 1577M
93673
Upon review of your request for 401 Water Quality Certification
to place fill material in .004 acres of wetlands or waters which are
tributary to Cat Creek for road improvement located at SR 1577M in
Macon County as described in your submittal dated 29 July 1993, we
have determined that the proposed fill can be covered by General Water
Quality Certification No. 2732 issued January 21, 1992. A copy of the
General Certification is attached. This Certification may be used in
qualifying for coverage under Corps of Engineers' Nationwide Permit
No. 14.
If this Certification is unacceptable to you, you have the right
to an adjudicatory hearing upon written request within thirty (30)
days following receipt of this Certification. This request must be in
the form of a written petition conforming to Chapter 150B of the North
Carolina General Statutes and filed with the Office of Administrative
Hearings, P.O. Box 27447, Raleigh, N.C. 27611-7447. Unless such
demands are made, this Certification shall be final and binding.
1786.
Sincerely,
qPeston Howard Jr. P.E.
93673.1tr
Attachment
cc: Wilmington District Corps of Engineers
Corps of Engineers Asheville Field Office
Asheville DEM Regional Office
Mr. John Dorney
Central Files
If you have any questions, please contact John Dorney at 919-733-
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post-consumer paper

STATE OF NORTH CAROLINA I
DEPARTMENT OF TP,.ANSPORTATION
IAMU B. IiUN1. lit DIVISION OF HIGHWAYS
GovLl.'NOll
P. 0. Box 1551
Andrews, N. C. 28901
July 29, 1993
MACON COUNTY
SR 1577M
_ 111993
AYETLAi JDS CKIP
?... t
VlATER QUALITY SECTI01 .i
SAM BUNT
SLOUTARY

Mr. Bob Johnson
US Army Corps of Engineers
Rm. 75, Grove Arcade Building
37 Battery Park Avenue
Asheville, N. C. 28801-2714
Dear Mr. Johnson:
The North Carolina Department of Transportation is
proposing to widen and pave SR IS77M, Deal-Henderson Road,
in Macon County, SR 1577M consists of a 0.44 mile portion
of SR 1519 and the entire 0.31 mile length of SR 1577. From
survey station 18+00 situated on existing SR 1519 to survey
station 25+00 situated on existing SR 1577 there is a
proposed relocation of the road (see SITE 1 plan sheet).
In order to'construct this project in accordance with
our current secondary road standards, it will be necessary
to construct culverts in two (2) locations which carry live
water. At survey station 20+50 a new 36" CMP culvert 60
feet in length is proposed in the realigned section of SR
1577M. At survey station 35+50 the existing 24" CMP is to
be extended by 10 L.F. on the outlet end to accommodate the
wider typical section. We propose to install the pipe
culverts slightly below the existing streambed elevations to
minimize impacts to wildlife habitat and allow the existing
stream gradients to remain as unchanged as is physically
possible. Our proposed culverts will carry streamflow of
small unnamed tributaries to Cat Creek which has a North
Carolina Division of Environmental Management classification
of Class C.
The best management practices will. be used to minimize
and control. erosion and sedimentation on this project. The
construction foreman will review all erosion control
measures daily to ensure erosion and sedimentation are being
effectively controlled. If the planned devices are not

Mr. Bob Johnson
Page 2
July 79, 199";
functioning as intended they will immediately be replaced
with better devices. The rock wilt, screens and other
erosion control devices will be in place: prior- to any
construction activity and will remain in place until the
project is stabilized.
By Copy of this letter, we are requesting the N. C.
Wildlife Resources Commission to comment to you concerning
our request. Also, by copy of this letter to the N. C.
Division of Environmental Management, we are requesting
authorization under Section 401 of the Clean Water Act.
Enclosed are a location map, straight-line diagram,
plan/profile sheets, erosion control plans and details, and
a U.S.G.S. Map indicating the location of the project and
culvert construction sites. Please review this request for
authorization under Section 404 of the Clean Water Act. If
you have any questions concerning this application, please
contact me at [phone].
Sincerely,
r(lJ. _
W. Trent Anderson
County Maintenance Engineer
WTA/ r r
Enclosures
cc: Mr. Mickey Clemmons, NCWRC
Mr. Eric Galamb, NCDEM
Mr. Verlin A. Edwards, P. E.
APPLICATION FOR DEPARTMENT OF THE ARMY PERMIT OMB APPROVAL NO. 0710-0003
(33 CFR 325) Expires 30 September 1992
Public reporting burden lor this collection of infomwtion Is estimated to average 5 hours per response for the majority of cases. Including the time for reviewing inwvctions,
searching existing data sources, gadering and maintaining the data needed, and completing and reviewing the collection of Information. Applications for larger or more complex
pro)octs, or those in ecologically sensitive areas, could take up to 500 hours. Send oomments regarding this burden estimate or any other aspect of this cdlecbon of Information,
including "gosdon s for reducing this burden, to Department of Defense, Washington Headquarters Service, Directorate for Information Operations and Protects, 1215 Jefferson
Davis Highway, Suite 1204, Arlington, VA 22202-4302; and to the Office of Management and Budget, Paperwork Reduction Pro)oct (0710-0003), Washington. DC 206M. Please
00 NOT RETURN your completed form to either of those addresses. Completed application must be submitted to the District Englnew having jurisdiction ovet the
location of the proposed activity.
The Department of the Army peril program is authorized by Section 10 of the Rivers and Harbors Act of 1899. Section 404 of the Clean Water Act and Section 103 of dw Marne,
Protection, Research and Sanctuaries Act These taws require permits authorizing activities In or affecting navigable waters of the United States, the disdune of dredged or ldl
material Into waters of the United States, and the transportation of dredged material for the purpose of dumping it Into ocean waters. Information provided on this form will be used
In evaluating the application for a permit Information in this application is made a matter of public record through issuance of a public notice. Disclosure of the information
requested Is voluntary; however, the data requested are necessary In order to communicate with the applicant and to evaluate the permit application. If necessary Information Is
not provided, the permit application cannot be processed nor can a permit be issued.
One set of original drawings or good reproducible copies which show the location and charactat of Ow proposed activity must be anactwd to Ws application (sea sample drawings
and instructions) and be submittod to dw District Engineer having jurisdiction over the location of the Proposed activity. An application that is not completed in tug will be rearmed.
1. APPLICATION NUMBER (To be assigned by Corps) 3. NAME, ADDRESS, AND TITLE OF AUTHORIZED AGENT
+ Telephone no. during business hours
2. NA? W AND ADDRESS OF APPLICANT
\
v 'r • / \
rc?--r5o r\-,

A ( ) (Residence)
.
(? -
N o `? h
C'
lina
<
{
D
-
-??
T
i "? ( ) (Office)
.,
o
eP
a
., o
(
ansPo
o
t
.
Q• D • i S rj
60y_ Statement of Authorization: I hereby designate and authorize
-'-\
A ra
I
2 S? to act in my
r ,,
1
(7
w s N C
Telephone no. during Linoss hours bohalf as my agent in the processing of this pomrO application and to furnish,
upon roquest, supplemental Information In support of the application.
A/C ( ) (Residence)
Atc(7o4) 321- 4165 (office) SIGNATURE OF APPLICANT DATE
4. DETAILED DESCRIPTION OF PROPOSED ACTIVITY
4a. ACTIVITY
--ro Co nS-LrvC± p i P e, c-u I v ert.S i n ? o f 2? 1 o cad, i on s o r\-
'S R 15-1-7 M De-al- ue.nderso n. Roan ) a Ntacor' L urx-Lv , t4Q .

S 17E I STS 20 4 SO
S Ff E ?. S TA, SS A SO
4b. PURPOSE
`ru widen ant Pave S R IS-7-7 M to meek. t?,AC DO T s+a nAa rd5
°r kllfr'c_°`( Sec.-?io?? ctnJ 0_1?nmenL ?or PaVecL sec0(1aQ('j roads.
There are_ -Lwo (.Z) local--ions alon +he.- <o0.c? conS?rt.cc?io?, Pro?ec.t
where. +.he_ ? r<ai n ana Pro Posed roaa w idyl. make c?l?er-?, uP9 races
(Xec.e,ssa < .
4c. DISCHARGE OF DREDGED OR FILL MATERIAL
ENG FORM 4345, Sep 91 E01T)ONOF JAN 911300SOLETE (prcp l:CECWan)
,, ;11,? x,.11 >>

< s;
.43 ol
- IO
'
?N
ly

IAA
_ 11
IO .l)I.

H
\? v T
A
® D J
I VG o / GG

°?
?
o Z ?* g Qc

C9'L
M rAS [r

? ? ? <.? ?C _

o?'? ei •Pi ?

U
J
1
1 %
D.pol 51. .fie J I. °
d'

l

? _
I7
i
? ? ? ` ? • ' ?` sY
of ? .? ,,

J 4
•J e
•
e e
?
? 1DO s

p ?
n
C
Gd
_ °
96' 1 .a
-\ o
YL
01

Q
02
L
W y N f.
p

°G ?•??
JO
tt,., i°
ea'1 -
PP `ice S
i
a
d
sjs ? I jj .^ y
y ? OG t?'v
C ?
0 2?i-r \ , 'h

iy
TSB N
- ? n ro
• y? ? T11 ? ?? ? fi

t,iAc 1.
CU.
ROAD NAME
S R.
SR-120 TO SR-1577
ADDITION
IMPROVEMENT
TO BE PAVED
P POLES TO ESE r),OVED
T. POLES TO BE MOVE D
W WI DTFI
SCALE
DATE

1. 721"^ -

4
4
45?
50
07-30-51
R
I ,
(J
4 5
I i
GRANT A. KEENER
840 OLD HIGHLANDS RD.
FRANKLIN, NC,
28734
3I
O
I
icr_
1-415
-?-i
ROBERT K. PARSONS
P.O BOX 1161
FRANKLIN, N.C.
28734
O
I' Crj

It: Zi i
1C +
I
HOLLEY SPRINGS LANDS INC.
317 EAST MAINSTREET
FRANKLIN, N.C.
28734 '_18 cMP,
p s9
NN ILL
40
I
d
i
I ?- 4 5 -?-
I
ROBERT F. FUCHS
28100 SW 182 AVE
HOMESTEAD, FLA.
33030
0

+C,C- I I +00
J.P. DEAL, HEIRS
°/o FLOYD DEAL
FRANKLIN,, N.C.
O
F?

-c-
1`?+r - 11
C?
144 GO

I
I
I FRED P. DEAL
1351 HOLMES LANE
MEBANE, N.C.
27302
I 5
O
? I
I?
i
I
11 + 25 11 + 25
l -?
•• d ryoTE MOVE rwo
I GUY WIRES
-?- 4 5
I
I G
I
1C+ GC, I
1 G+CG
I'L
-F?.-
I
I-? - Z
0

?.:
S=rI
I
icr_f
0
I
I
° °I° NOTE: ADD 18' CK1P 1
-a-
I 4 5'
I
1`-+ 00 I
15+00

P
WOOD
SHED
I
2 3 + 00 E.O.P
I
I
o, ilf CMPI,o,o
e 000
1
f
?I
6
O
I
10 e,3G? CM P, o INSTALL (oO
di- - --- ?? NEW L-0C-A-f 100
I S"I" A 20 + So
1-•- 4 5 , I

2 ("+ ?,?
ti

I I ..
I
f
I

"` . :,., Jam. ! ? i;ac': '•, -• .
on.
j i
Sta. 39 37 oN SR-I5-77A,
? DeaL-Hr;ndcson ?d.
IS C Na/ -fcj .S-fa• f 37
{i)JL' r' I On St /677 - Heng/ersen Rd.
3 ., Pa -:3 "4/
... ... __-.--_'_• '--..._. _.ri.Ci(;I't-:.?... •___--. + :ci::`? _..__.-._...._ ... .__-_...-_.. I.f?Ci1':?8J _ -..._?
?i%= -'?... e /?• 1. ?c_. t I Add /0 L.F.-Z4"CMp ct.._ c>cs -
ln,erlGc%io 35±SO Gam.,- 1 To OU-Net end of
9'"CMP'` ?
f / 24"C-MP '? j EXIST-%r,2
r
SR-1S77r1
Ile,
Deal tlfn
XS F,, ; v?/er7
r. • 0t00 On 5-77
pit Ole r,
7?,?? - 234-00 2340 0 OfDO'_-
y
TEl1/IPOI?,?I /1?Y E-1-?05101V ??OSIOIV CONTl eOL 5?'Mb-'OL
TEMP STONE DI TCH CHECK
ROCK SILT CHECK DAM 4
sILr 3QSiN-e
TEMP SLOPE DRAIN T
TEMP SILT DITCH FS D
EA R T H EM BANKMEN T - '`
III (-?I
S/ L T FEN CE
TEMP STPE4M CROSSING .?.?L
FIBERGLASS ROVING F G R
• exist. I- ence ........................ -- , ___ --; -
Proposed Road .....................
Existing Road ...................... -----------
C
Control of Access Line ............... -- ,,
Slope Stake Line ....................
.B ri d >e. ....................-----?--
Culvert C ;.
Woods .............................
Telephone or Tclegrapli Pole ......... 1*1:.\1s•,' -o- ? 11'1(01' --o- 1
Tower. Pole and Line ................. -v--- -0
Power Pole .....' ................... (r:.x 1s'r d (PROP b ,
F Easenlc a Life..:...................
IYlowinc; Linde ......................
Guard Rail ........................... r T
Sanitary Se%r'er Line ................ ?---S5
-
Water Line . .... ........... t
cas
Gas Line ... ... ................. ,. ?-
'1IU1'U51:D F'XISTING
1
Chain Link- hence ................... -?---------- 0- - ---L
Woven Wire Pence .................. -w ?.-"
Regeneration ......................... -~ 7 Y
Reforestation ....:....... ......... rte"/? .
?.
Temporary Silt Ditch ................ TS;) TSD
Temporarv Silt l" ence ................
Temporary Slope -Drain ................
Brush Gamierr .........................
Silt Check Dam 7y-pe A ............... n '
Silt Check Dam Type B ...............
Silt Basin 1?-pe A .................... ---. •
Silt Basin Type B ....................
Rock Silt Checlc Dam .................
1 a r 1? Berm ......................... --? -? --? .-? -• --?
Tcmn. Slone Ditch Check _ ..... .... ???'? '
I
EROSION CONTROL
DETAILS AND
SPECIFICATIONS
Std. A s .riQtion Symbol P-
245.03 Temporary Silt Ditch .. V1-2
245.05. Temporary Diversion .. VI - 4
893.01 ......
_TD
Temporary Silt Fence _ VI - 6-
890.05 Temporary Slope Drain with Earth Berm
245.01 Silt Basin Type A ....... _,___,,,,,, VI-10
245.02 Silt Basin Type B ,,,,,,,,,,,,,,,,,,
892.04 Temporary Rock Silt Check Type-A .......... __________ _ VI-14
895.10 Temporary Rock Silt Check Type-B ,,,„_„_,,.> ---- ----- -- VI-16
892.01 Temporary Rock Sediment Dam Type-A ,_,,__ _ VI -18
892.02 Temporary Rock Sediment Dam Type-B VI -- 20
897:01 Rock Pipe Inlet Protection
.° °.
__ _ VI - 22
894.01 Rock Silt Screen ....................... .................. __ Q°_a°_--- -- VI - 24
245.04 Stilling Basin ........................... .......
...................

V_q VI - 26
Rock Inlet Protection:
896.01 Type A ............................. .. A ???-- OR --A)) --- -- VI - 30

896.02
Type B ............................. ?..
.. B ? OR -- B )) ---
-- VI - 32
896.03 Type C ............................. .. C ?._ OR -- C ) --- - VI - 34
VI-1
March, 1993
C-Orbin Kylb6?,.W.C• Quadranj?e. SR IS-l-7,M, Deal-Nenole?SoA`Rc?.
- - holly Springs
b jt Mtn sch
\ ? ? A 4 • ? ? ?. ?"A' ? ? 1. - ? .' - ? - ?? ? -
a /
L' r Holly Springa?Ch,?
?;30 1 ???\ ` l \tl Ciao
>
' 007'"d) Ec=, w coo
M1 S TA. b +O
;J,T, .? \ A
13
Il ? t I1?1•? w 7J ?. ? ?-`L S???I ?i j ?•\ %. ?( ?. \. :/J ? ??? 1 ````\ ,`\:i
i 'J _ cf r? 0 + r? _
?A?O {? r2n /?? ? ? I\ ??\ ?, u. ? _ ! r'.,? ? ?•:A'? 1111
Vil;
A > l \ l ??
usar-Ft;rk c4, t , . r ? :A` ,ter ? ? ?- ?,
j?eirynMul - '
DER ( ?? (+ - •<p?o - ?\ r
T?+ ?` ' '•, ii ??lJ %. J ?A,
f +
?I/iSTATION.i
Poo
j
a_
$? i?' ? l •?._._ _. ,. ?? '1? ? 1, '?? > ???,? / :`
° ? ? ? ?• ;? ti,? ? ? ??, ??'v` ???,? `fir= ;???1'., ? , i /,, ? , , -_ ?i . ? ? •, ?.??,?? ; -,, ,A?} „ /// ooo?? ,,
ANQ?L CEM, ???? ?' _ ???? ?• ,?? ?? ?? ',A V??. _ ? .i: ??/ i 1 ? ? 11 ?+ / ?? ??? ?I + ?1 ?,1?(?+ll l(??? ?..
Jacobs
?
C11
R 14
\> `Ca"? ?-- ??? i - C'' t°• +/ ?? `?` ?- x
c _ ..

-? t 1
? d ? V ?I ,tl
? I
d S ?
I I
i
v? I I.
q ? I
I^ t, / n I
i
it If
1 ;
f 1 t ? ?
r
l-o' 3
<-`Try; • i'?i,?? ; .
:YI
tJ
C'
L
\P
l.

(/' = IDLE NoKI
r. t?:
o
v1
c?
t _
1 I PROP A:DL to -?-r r
1-5
I I +?' ??i
1
F' -
I D ; Rc:.k s,??; y
t ?
i?
r,

r. -

TEMPORARY SILT DITCH:
-'MD
A temporary silt ditch shall be used in place of silt fence in many situations.
Temporary silt ditches shall be used at the toe of fill slopes to divert runoff into
sediment basins, temporary rock sediment dams, temporary rock silt checks and/or
other sedimentation control measures. Temporary silt ditches are approximately 1
ft. deep, 2:1 side slopes with an optional earth berm.
AREAS OF USE:
• Toe of fill slopes where fill exceeds 3 ft in vertical height.
• Along streams to intercept flow and/or divert to a controlled outlet.
VI-2 March, 1993

a
plm

Fig
N

kl' U

Q

' 11
11??+,-
'1 V J ?

ILI"

o
O Q
t?;G
E. ,''
C F-f =ZT
d
- O
F. L J
F
7
W
CL
oQ
A

r?l
(? .
:E: Z
4
Z4
U? W ooa
W :-
° > ?a
O
U3
o Q
V) 0

I cn
Q
?

0
I
zw
oX
G' cn a m

` a
O
v
L.LJ
^,I LIO
CIUI
>
N? O O
N a
E
I
w ?
r-
n
=
f',
cm

VI-3 March, 1993
TEMPORARY SILT FENCE:
A temporary silt fence is commonly used at the toe of a fill section to prevent off-
site sedimentation. It is made of permeable filter fabric buried at the bottom,
stretched and supported by steel posts. The silt fence reduces the water flow while
retaining the sediment. They may also be used to divert water flow to protected
outlets. Silt fences need to be checked after each significant rainfall to ensure there
effectiveness. They must be maintained on a regular basis. Silt fences shall no be
installed across streams, ditches, or waterways.
AREAS OF-USE:
• At toe of fill sections where sediment runoff can be stored and contained
inside the project limits.
DESIGN CRI'T'ERIA:
Material With Wire Without Wire
Fabric- Type 3 Class A Type 3 Class B
Steel_.posts length 5 ft 5 ft.
Post spacing loft. 6 ft. maximum
VI-6 March, 1993
-1 1wi.

wW
a3
3
x3
x
m ?
cD
o?
¢Z
LL-?
F-
W
? L7
O ¢
F- O
F- m
0-
Co
w
O m
¢ J
J
Q. ¢
O 2
F- Ln
i LL
w
c
3
W
F-
O
Z
U
E
C13
??
fr3
w
F-
J O
Z
LL ¢
J
J-
L.L
O
W
v
O
U
? N
1 11= a a
-III

'I
I ?o
?
? _ ny O
?
o
` 0
¢
Z
_ I I I ?
II I °° UU
_ _ .,
N4
? w
-i I I • Q O

I I I _ LL
------- - ----- ----?W =

-------- ------- ----'Z O
O F-
;T N Z
'-'
z
?-- m --I W W
x?
II W 3
?I
rIII-
CIII
VIII-
VIII
D ¢ W
Z ??
LL Z 3 Z
.,
? ¢
z
02: > Ww w
? -a

V) ¢ CO ~ 0
LL
m
O
WN W J
co JOW?
¢
W J
N i
CD
¢'-.
Z
= 2 F-
W
.J U) >- O m
m
m
?
¢ J ¢ JZ J
=
O
W
W F-
J?
J3 (
Z
t
-
¢ W
O uj

00 U-) w
u 2 0=
F- LLJ
U) W
Cr
Z
J 3 W
¢
r
o M
w
a

(X ¢
tL3 Co
a
¢
O z
w N
O°
w
N= Z
«-. a z 0 0

- W W J
0 LLJ ¢

U) a-
Z

W OJ Z W
Z JCOWV W
M
=
W O
0
3 m
3 t) W~
¢ IL - U)
3 0
ZO O OL¢LO m LLJ ¢ Q
U
X
Co
tL
w
t-
J
z
3
a
o:
0
w
0
z
a
0
LW
w
11
O
O
z
ci v
?- H Co
w v?
W
U
W
LL
U) O'<
<XU
Q xxx
?W0
p pOW
a
w
~ W>
El"
p
Q ?
Z
Q
F0
N
UT
VI-7 March, 1993
TEMPORARY ROCK SILT CHECK TYPE-B:
D
A temporary rock silt check type-B (also called check dam) is a small dam with a
weir used to reduce gullying in drainage ditches that are to be filled or
permanently stabilized at a later date. These type-B rock silt checks help reduce
the flow velocity and are generally made of class-B stone. They are used in ditches
during construction where the grade meets and/or exceeds 3%.
AREAS OF USE:
In channels, roadside ditch outlets, temporary silt ditches, and temporary
diversions.
In-conjunction with type-B silt basins.
DESIGN CRITERIA:
Center-of rock silt check-shall be at least 1 foot lower than the outer edges
(top of channel sides)
The spacing (ft.) _ (3 / % of ditch grade) X 100 ft.
VI-16 March, 1993

2
U
~ w
o ?
0
J J
Q U-)
Cl -r
U =
O U
H
r14 -- ? Cl
0
Q_ W
Cr_ w LL I- > o
O O ILL a_
O

3
W
Z
Q
J
a
z
O
F- U
U I-
W '-'
to o
(n W
(n W
O >
U
U
0
J Q
0 3
ON ' ,QQI > Lli
d ;= U
--I Z
O
LL. F-
0 >
W W
Q !' W
m
I ?
i
L _ _ J
I3
0
LL
m
o (n
W<1
o a m
V 11
Q (J')
z
O
T? O U
0-
o
'A
.? J
z ?- W Q
? S (10 O
0
?
Cr) 0 W
a-
fz Q
Cr_
FIT
zI¢?
? Izl
trI
o:
QIw;
v;l E7 o'
zl PI z;
o v Q;
?„ w oI
Imw:
o i
W i--
mU
W Q
Z -10-1
O -11--
I-- JQz
CnO=OZZ
fr- (nUOO
m Z O LU U)
OZT-XO
JUQI-WC•
J aW
QZ^I- ^
=O• QWf--
W--•m UOm
(P- fz u- •
WO 0Or
Zm(n(LCLWCn
OWUI Z(n
W1- QOH--OQ
F--(nCLJ??F-J
O OUC=WU
Z LL--a-D• --
0
z
D
0
Q
V
J
a
Cr
C5 m
XI'?
clu,
Co
m
w
C
F-
U
W
U
J
Q
V 1
U
O F-
Q 4 ?rr
??
O ?A
0
LLJ
f-r
Q
F-
Co
a
A o
?a.
N
VI-17 March, 1993
ROCK PIPE INLET PROTECTION:
0
0
0
A rock pipe inlet protection is a horseshoe shaped structure with a built-in
sediment storage area around the outside perimeter of the structure. The rock pipe
inlet protection shall be used at pipe inlets no larger than 24 inches in diameter
where it is receiving flow from several directions. The rock pipe inlet protection
utilizes class-B stone lined with #5 or #57 stone to protect drainage pipe structures
by trapping sediment before it enters. They have a sediment storage pit which is
designed by the same procedures as a silt basin. This device can also be used
around the inlet of temporary slope drains where space is limited at the outlet end
of the-slope drain such that a basin or other device can not be used.
AREAS OF USE:
• At inlets to pipes no larger than 24 inches in diameter where it receives flow
from- several directions.
In areas where it can be cleaned and maintained on a regular basis.
DESIGN CRITERIA:
• Structural stone- class-B stone
• Sediment control stone - #5 or #57 stone
• Sediment storage area - 1800 cubic ft./acre
• Dam height - 3 ft. minimum
VI-22 March, 1993
i Q
Q
w
a
CL 3
O
W LL
Z ?(
ai
J w W 1l- F- E
J = Cr Z LO O F- O
Q F- W z O Z Z Z >-
z_
N O F- a N O 0_ m m
Z a w 0 Z F- - 0
w Q U O J w u 0 W
.?
o w Cr_ M LLJ CC 0 Cr U)n w U) LL
1- z LL (L F- J F- . Cr_ W •-+
(n O Cr_ U) Z (n J Z a J U
F- O H O (n O a O Z w Z W
J w z .. w Q U • 2 U O Z w O m m
Q Q Z J O (1) F- O z U) W
O m d O w u F- Z W F- O W W
. r
F- U) W F- O v w W OZ F- w w U) m (n _j Z U U M U F- J i m a Q. O W C 3 Z
m J J m N Cr O J W a w Cr z (L m W
W F- U J F- F- W J z U F- - W W
F- V) azzz(na0X --Z0Umw
O w 2 0 0 0 2 F- O O O U F-- Z
Z m U) U F- U U) U) U. CL U Q O H
O
Z
O
(.7
3
a 0
a
Z) LL
a
z ,
w
,, n
i a i
i a-
i U
m i
? W ?
>i
w i i
z ;
o ,
U Q
J 1
Q
Z ~
Q M)
Z
J z O
CL
o U
/ d W
N rI1
o
Cr_
z
0
U
z
w
z
0
W W W
z z W
0 0
N N
W LLJ
a
Q O
Cr
O Lr
f O
0 ? o. a
00 Z p O
J Ld J 41
LL Q 01 v N
W c_ w
V) Z
L_ -
O --
O,
ao
F v; Co
Z
O
F-
U
W
F--
O
m '
0- Z
r
W C.`9
J QZU
-Z
F-4 ..
LLI QQ?
Y Q vU F "'
O
O F
cr,
O
a
D
Z
Q
o,°pOpO° O
°E
co
0
00000 Vl
VI-23 March, 1993
ROCK SILT SCREEN:

A rock silt screen is a low-level dam structure to be used in streams below culvert
sites. Rock silt screens shall be used to trap sediment transported by running water
and shall be placed in the stream below the construction site within the right-of-
way or easement boundary. The rock silt screen utilizes class B stone lined with #5
or #57 stone to produce a ripple-effect in the stream to settle the larger sediment
particles transported in the stream from the construction site. The trapped sediment
shall be cleaned out before the device is removed from the stream.
AREAS OF USE:
• In live streams below construction sites where construction occurs in or
adjacent to the stream.
• In live streams below a culvert construction site.
• Where it can be cleaned before it is- removed from stream.
DESIGN CRITERIA:
Structural stone - class B stone
Sediment control stone - # 5 or # 57 stone
Dam height -1.5 ft. minimum and 3 ft. maximum ( shall not be higher than
1 ft. above normal flow of stream)
VI-24 March, 1993
1 t
.I
¢
W
r
0
a
m
J
`I
z
¢
0
ao
r
a W W E- z
-' = Cr.. z Q Z E- d
V] Z E-- a. ° E- a, w E- a
W2QdwO ?zWU? Daw
zU) fZVa p WSW a.4
E-W= U.a.a &.0 Z= - E- w.L
aaCoCZE- o z0` oz14C4
U pzq Z
d0 dz Ocn E-0 O
a C' -1 =) W -; E- Z W E- Z W
U q
E-- C4 WE-zOWwWZE-W =)W>
Uz- MUE -M'< p.a::?W O
. .
o E- a a a p a w W a x a Cm d
W E- 0 E- -? E- V) Ea a Z U E- d . E-
E-U) Z dZZ'3 d0a -Z,? dE-LL
O WO=00 7 =E-Oa0 =,--w
z MUMUE-V WMC a.U W1 Ca
1
m -
-
N
a
o
r -
=
-?
t _

W

\
?
O -_-? ca Z
O
?
LL

O
W
m
¢
W
Ln
X
z
O Z
i in O

?i ?1_ a F-

`"
0
NLQ, ?. U

^?• ?W
z
0
N
O
r
2
O
U
r
2
W
S
O
W

C
is 6
77
LLJ
LLJ
U
00 `ex c.)
u 0-
O ZO
n-
0
<T-
0 V)
Q
00
WHO] ,
o
N
VI-25 March, 1993

PIPE OUTLET ENERGY DISSIPATOR:
00
0 0 0
0000
A pipe outlet energy dissipator shall be used at pipe outlets to slow the water
velocities when it exits the pipe and flows out ditched or natural waterways. It is
an apron of stone of a sufficient thickness to protect the outlet area from scouring
out and causing off-site sedimentation damage. Pipe outlet energy dissipators
should be built according to the guideline chart shown on page VIII-3 of this
manual.
AREAS OF USE:
• Outlets of pipes and culverts to prevent scouring.
DESIGN CRITERIA:
• In accordance with chart on page VIII-3.
• Filter fabric, or six inch layer of gravel, shall be used under stone.
MATERIALS :
• Filter fabric shall meet requirements of section 1056 of Standard
Specifications for Roads and Structures, January 1, 1990, for type II filter
fabric.
VI-34 March, 1993
w + Y
y
O
11 ?
O
.U
C
(1) C
W L
C
Q
L) CL
04)
I (n
CL Z i?_ 0
L
W
y W
0 y
U U
dt111 __ yt '4i >' 4--p
= Ili f = w .? Q?
q _ lNl y ?
¢ -? i`? ?_
? _ ? ? 'w c7 O
I W^
^ 41
O cd O w w
O V O p 0
U) 0 0O w O
.? ?p 'can' ? O O
_ O
(D 4?
1 a C'j
¢ ? ?I. r II II II II
J C7
Cn
0
y O Q O °o
00o
O
VI-35 March, 1993