20061947 Ver 1_Site Plan_20061221

NOTE:USE 15"CPP FOR STREAM RE-ROUTING.REMOVE ALL TEMPORARY PIPING WHEN FINISHED AND RESTORE SURFACES 0 —,--EX UNDISTURBED STREAM CHANNEL,--REMOVE EX 12"CPP&RESTORE STREAM CHANNEL z
BEGIN RESTORATION RESTORE WOF EX JURISDICTIONAL A 0
STREAM W1 STEP-POOL SYSTEM EX WM u
/-PROP IS TONS CLASS I RIPRAP(LINE BANKS) EAL
r 0 110 u
RESTORE75±'OF EX ROADSIDE
(NON-JURISDICTIONAL)DITCH TO GRASS LtNED"VEE' DITCH FILL&GR�DE THIS AREA -,,MITER END OF PIP TO MATCH SLOPE TO PRECLUDE PONDING
INv=q1 00
-A-—A < INSTALL JUTE MESH
% /v DITCH LINING AFTER GRADING IS-COMPLETE Jill/W4 �,BEGIN RESTORATIONX)F
ROADSIDE DITCH TO ,
fill/ GRASS LINED"VEE DFIX�
EX DITCH ELEV=95.26
0 Ex WM EXISTING 15"&12"%,TO BE REMOVED z
0
/fit PROP STREAM 06�E CMP @ 1.20% fill/ EX WM I >
REMOVE EX 12"CPP CHANNEL&RESTORE STREAM /I I It I j MITER END OF PIPE TO MATCH SLOPE INV=9046 RESTORE 250±1 OF,JURISDICTIONAL STREAM EX FLz--9o1)7 FILL&COMPACT WASHED-OUT AREA z z
�EXF 040-21 Z OEXWM EX FHYD PROP30TONS CLASS I RIPRAP EX FL= (LINE BANKS)END RESTORATION CULVERT TO X GRADE E 0
X FL-/90
BE REMOVED EX GRAVEL/-PROP GRASS LIN Ex GRADE ROAD"VEE"DITCH EX GRAVEL EX GRAVEL ISR MIN PE ROAD 2.0%,4.0%SLOPE ROAD c CL EX STRE P GRADE PROP STREAM BOTTOM ELEV OP GRADE v I KOF GRADE OVED'��.' C a v EX CULVERT TO BE REM TOMATCHINLET&O Liz I CUT SLOPE BACK EGETATE C13
EX FL=8+4,'�
PLAN VIEW OEM*JURISDICTIO AL EX GRADE 4 d
ROADSIDE DIT& 0 51 10, 2V 3V :3 SCALB: V 10' cf)0
SECTION A-A SECTION B-B SECTION C-C >
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TYPICAL SECTION OF NON-JURISDICTIONAL TYPICAL SECTION OF JURISDICTIONAL STREAM TYPICAL SECTION OF w
ROADSIDE DITCH RESTORATION RESTORATION WITH CULVERT REMOVAL JURISDICTIONAL STREAM RESTORATION 0 HORIZ SCALE:I"=1 O' HORIZ SCALE:1"=10' 0
HORIZ SCALE: 1 1 9 VERT SCALE:I"=5' VERT SCALE:I"=5' 0
VERT SCALE:I"=6 +�
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............ VV_....................... ...................... ­-HORIZ,SCALEr1*,=10............................ ...........------- tA
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........VERT,SCAUE�'I*­'15 ......................... ....... W
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--------------......---------------- ........................ ............ .............................. ------------- ----------------------.............'G >
RAM .............. -------.......... I............ ...................... ............ ..................... ........ ---------------95 ------ 95
----------------- ...... .................... ...................... ------- 77�� Ld
I............. ............. ............ COAM,%ION NO.
.......... ................................ ...... .................... 90 DWIGII&D BY
90 ------------- ----------LVE R1 BOAZ
..................... .............. ­�o......... ............... ..........----------- P _sT E A........... ............................. ................... ................................... ............. -------IDRAWN BY
NDITU............ .......t�.......... --------...................... ...... ............... ........... ......E ................... ...... .............................................. .......... ................................ ------------------- CARROLL
BED� ..IMPACTED,�,A,Tk,'........... TO.-BE.RESTO.. D.," .................................................................I ............. ......................................... ------- CMCKED BY
................................ ............ .................... ....... BUGG
L............... ......................... 85
85 ................. ........... ............................... &",- 11%UE DATE
II .......................- ............................. ................. ..................... DECEMBER20
wo ................ ........ ................ .......................... .................... ........ ...... ...........
.......... ................ .......... Z-1111-1-11111-1- ........... ......................... ------- ............ .......... ........ ............. S H E E T N 0.
................ ....... .......... .......... ............................. 80 80 ....................... ................. ..................... ............... . ..... ------- .�p cc ................................ ................. ......0 xw.......... --------------- ---------- ................................... ------ .... ..... -------- ................t----------- .................. ......... ........... .............. ...... ------............------ ........... ...........--------­­....................... ....... ...........75 cr co 75 0+00 0+25 0+50 0+75 1+00 1+25 p%ft
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Spring Garden Subdivision
Stream Restoration Narrative , fv%
11 I::; 1::;AAt1 I) ] 11 I
A storm event of unusual magnitude occurred on Lake Gaston,in the area of
Spring Garden Subdivision. An existing 15"plastic culvert that routed existing Spring
Garden Lane, a private, graveled road, over an unnamed branch of Jimmie's Creek, did
not have sufficient capacity to pass the resultant storm flow and it overtopped the road.
Just prior to the storm event, a public water line was in the process of being installed on ,
the west(downstream)side of the road. When the road was overtopped,the storm flow
washed the disturbed soil from the waterline installation into the stream creating
sedimentation within the stream bed as well as erosion where the over-flowing waters re-
entered the stream west of the road.
The Spring Garden Stream Restoration Plans is presented as a response to the
environmental degradation caused by this storm event. Its goals are three-fold,first to ����pbmt�tadr��1 Z
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stop further ongoing erosion and sedimentation by stabilizing the site, Then,to preclude ��° �\®CARo�o.#.* 0
to the greatest extent practical,the re-occurrence of such road over topping, by theT �� �g4 S5J�'0--V '.. H
installation of a hydraulically adequate culvert, and finally to clean-up and remove event CAROLINA ,W 64
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relocated debris from jurisdictional areas and return them to"pre-culvert-failure" NORTHAMPTONCONTYNORT -- X, -"U
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We intend to accomplish these goals by performing the following sequence of r® Fjy0 �� ,
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tasks
. OWNER "'1181645!®`t� W
1. Take emergency measures to prevent further siltation from originating at this site U
by installing silt traps,silt fences and other devices of a temporary nature and OWNER: GROVER EDWARDS
establishing a good stand of vegetative cover on all currently denuded and/or ADDRESS: 672 VINCENT z .
disturbed areas, and providing proper maintenance thereof. Many of these HENRICO,NC 27842 �a , " k
emergency measures have already been instituted. TELEPHONE.[phone]
2. Submit permit application to the U.S. Army Corps of Engineers for installation of FAX: [phone]
. proposed measures within their jurisdictional areas simultaneously with plan
submission to the Department of Water Quality and other concerned agencies(if ENGINEER
3. Receive permit(s)s and plan approval from all agencies prior to initiating CONTACT: B&B CONSULTANTS,INC.
P ( ) P PP g P g
construction. ADDRESS: 212 E.FERRELL ST.
4. Begin work,sequenced as follows: SOUTH HILL,VIRGINIA 23970
a. Install additional erosion protection devices prior to initiating new land RESPONSIBLE LAND DIMMER41 et
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( )
disturbance. fly'
4
. (b.) Temporarily divert the flow east of Spring Garden Lane to the west B&B CONSULTANTS,INC.SHALL ACT AS THE RESPONSIBLE '
side,as shown on the stream restoration plan, Sheet 2 of 2 in order LAND DISTURBER UNTIL SUCH TIME THIS PROJECT IS BID OR A CONTRACTOR /
to install the new 48"culvert and the pools and riffles of the "plunge IS CHOSEN. AT SUCH TIME,THE CONTRACTOR SHALL PROVIDE A CERT�
pool", in"the dry." LAND DISTURBER AS REQUIRED BY VIRGINIA STATE LAW 10.I-561. THE
c. Permanently stabilize all areas that are disturbed by this installation by .CONTRACTOR SHALL THEN NOTIFY,IN WRITING,THE PROPER AGENCY
( ) Y PRIOR TO CONSTRUCTION. Z
grading, permanent erosion control devices and vegetative cover as 4
shown on Sheet 2 of 2 of the plans, y
(d.) Return flow to this completed reach, placing the new culvert and `'"
"plunge pool" in service, and removing the temporary diversion
(e.) Temporarily divert the flow west of Spring Garden Lane to the east W
side,as shown on the phasing plan, in order to remove the culverts, I .
debris and sediment that's obstructing this stream,restoring the
meanderingflow line using an undisturbed reach as a template for SHEET INDEX
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. establishing a natural geometry to the thalweg, and installing erosion
control devices,regrading steep,disturbed/denuded bank for stability
. and establishing a good stand of vegetative cover.
(f.) Return flow to this completed reach as soon as it reaches full stability NCB. TITLE
and removing the temporary diversion devices. .
(g.) Restore the disturbed area east of Spring Garden Drive and south of ,
- the new culvert's inlet end. By filling and regrading to conform to a ;: _n ,,, I
"vee"section roadside ditch with adequate capacity and positive slope; - 11
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1 COVER SHEET
and establishing a good stand of vegetative cover for adequate i4
the two existing CPP culverts will be .. "- ,
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stabilization. burin this base, � ,o, y 2 STREAM RESTO�...1UN PL•At. I __
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removed,if not already encountered and removed during the previous '*_ . 9��0,�� - 1 1 0
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phases. / .r�,�, 1
(h.) Remove sediment from the stream that has accrued from the site due to I - `,- ,,� `��.
this or any previous disturbance. This will be accomplished utilizing E .illr. -
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tern or diversions around each reach bein cleaned. The stream
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cleaned out b hand utilizin buckets and shovels and the
bed will be �' -
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material that's removed will be transported to an upland area and ' ._ , -
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disposed of to preclude its creating further sedimentation I-- _ ,• �, �: .' . - ;c _:•
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problems to this stream or an other jurisdictional waters. It will be �(�1 ++ ++ ~� `af ` '
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a erial will be railed to reclude -
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ondin limed and fertilized as appropriate and sown with a locall0
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adapted seed mixture in order to obtain a good vegetative cover as
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a nvolved in this lan will be continuousl monitored ro er �\ r.F.'-°,f�.-: • �. �. w ++ ,. ,, _... i .
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maintenance performed in a timely manner and after achievin1.
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devices will be removed from the project ect area and properly erl dis disposed 1,.,
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1. Tem ra Seeding
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Hite base of construction shall be _ ..-... .:.: ; : , ::; t} (I
Topsail stockpiles and all areas to be rough graded during the initial p SEQ. a lr�,� // ,,.,_„_. Z 0
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seeded with fast-germinating, tem ara ve vegetation immediately following grading. S , , I: . , , �� C7
temporary g \ \. . Ilf /I`
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I d n rass or cis 1 r i! u a G t�sh II consist of 00 Ibs of Pea 1 M et S I A s 15 a r een A ri 1st and u u fi th w rfo med betty
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and 50 Ibs of Cow as and/or Soybeans, �,,.donGrass/Hybrid, a �. ,S u
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I i f Ibs of Rye and/or Wheat 50 Ibs perennial Rye ,,
August 15th and prior to April 1st shall consist o 120
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grass, 30 Ibs Crimson Clover and 20 Ibs of Hai Vetch r acre. )), I. .
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2. Permanent Seeding
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not paved or built upon shall be permanently seeded with the following seed mixture: ,, 4
All disturbed areas g - , • ', -- .
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200 Ibs Kentucky31 Fescue
IMPACT 0
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50 Ibs Creeping Red Fescue i�% . ;o .2 ��„
20 Ibs White Dutch Clover -� SEQ, b 11. I
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r e of 270 Ibs. of seed acre.
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Seedbed Preparation ... ...... ,. ...: ..... ,� ,� �- - J,.
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Permanent turf.
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a) Remove rocks and debris that could interfere with tillage and the production of a uniform i - `� •-.„_... __ `' as
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seedbed. � I ,�70 � ' _. . � .�-�;:r. 1A t• ��..
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b .Apply lime at 2 tons/acre 10-10-10 fertilizer at.1 000 Ibs. ,�
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c Loosen the subgrade immediately prior to spreading topsoil by disking or scarifying to a1.`: `t;' .
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depth of at least 2 inches. +� , '
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d Disk or harrow and rake to produce a uniform and well-pulverized surface.
DESIGNED BY
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e) Loosen surface Just prior to applying seed.
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f) Apply mulch at 2 tans per acre. i t .::' '.. ��' DRAWN BY .
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Temporary Seeding• \\ _ 7 . 1 . f1 �: `�_ c>EIEcxEn BY
a) Remove rocks and debris. ;" .. _ BUGG
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b Apply lime and fertilizer at rates recommended b soil tests spread even) and {
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incorporate into the to 6 with a disk, chisel law, or rota tiller.
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c) Break up large clads and rake into a loose, uniform seedbed. 'N� \ ::' : ` :: . -_: //,
d Rake to loosen surface just prior to applying seed. \ �'
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4. Maintenance. .�-.- 0.: .
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a Refertilize in late winter or earl spring the following year. Mow as required. ;....
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b) Keep mowed to a height of 2 4 inches. Fertilize with 40lb/acre (1 Ib/1000 ft ) nitrogen in winter1. ::.. .
and again the following fall. SEQUENCING, OF WORK FLAN VICINITY MAP
c) Inspect and repair mulch and lining. Refertilize in late winter of the following year with 150 lb/acre
. 10-10-10 (3.5 Ib/1000 ft�). Mow regularly to a height of 3-4 inches.
d) Topdress with 10-10-10 fertilizer if growth is not fully adequate. , y __j
e) Topdress with 50lb/acre(1 Ib/1000 ) nitrogen in March. If cover is needed through the following ° r0 2. 44 f'4 0 50C i3O� a,
summer, overseed with 501b/acre perennial ryegrass. SCALE: I" = 20' SCALE: 1" = 1.,000'
CaF SHEETS
_� __ ___ - ___., ___ _.._ -------- ___ .. __ _ . . --