20110189 Ver 2_More Info Received_20110509

Strickland, Bev
From: Homewood, Sue
Sent: Monday, May 09, 2011 9:13 AM
To: Dennison, Laurie; Strickland, Bev
Subject: FW: Yanceyville Walmart Requested Additional Information (UNCLASSIFIED)
Attachments: Yanceyville_Culvert Plan_11x17.pdf; Yanceyville_Culvert Plan_24x36.pdf
For file 11-0189
Sue Homewood
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed
to third parties.
-----Original Message-----
From: [e-mail] [mailto:[e-mail]]
Sent: Friday, May 06, 20112:39 PM
To: [e-mail]; Homewood, Sue
Cc: [e-mail]; [e-mail]
Subject: RE: Yanceyville Walmart Requested Additional Information (UNCLASSIFIED)
Andy/Sue,
As requested, please see the attached revised culvert plans including details illustrating the installation of the rip-rap apron (full
size and 11x17). We understand that by installing the rip-rap at the existing bed surface elevation that mitigation will not be
required for the additional impacts caused by the rip-rap dissipater, therefore, mitigation will only be required for permanent
impacts (81 linear feet) from the replacement and realignment of the 48" CMP. If additional information is necessary or if you
have other questions please contact me.
Thank you,
Chris
-----Original Message-----
From: Williams, Andrew E SAW [mailto:[e-mail]]
Sent: Tuesday, May 03, 2011 3:32 PM
To: Tinklenberg, Chris; [e-mail]
Cc: Watts, Austin; Houston, Justin
Subject: RE: Yanceyville Walmart Requested Additional Information (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: NONE
Chris,
I have reviewed these plans. However, I don't see any drawings or notes that discuss or show the placement of the rip rap
dissipation pad as discussed during our site visit. We typically request that the top of the rip rap be placed so that it is at the
same elevation of the existing channel bed. This allows for aquatic passage and also doesn't impound flow, both of which are
conditions of the nationwide permit. Also, if it is placed in this manner we don't have to require mitigation for the impacts as
they shouldn't cause a loss of water or stream channel, i.e, the water should flow on top of the stone.
Please let me know if I have missed this information in the drawings or provide a drawing/plan that indicates the rip rap will be
placed this way.
Please call if you have any questions. Thanks.
Andrew Williams
Regulatory Project Manager
U.S. Army Corps of Engineers
Wilmington District, Raleigh Field Office
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
919-554-4884 ext. 26
-----Original Message-----
From: [e-mail]
[mailto: [e-mail]]
Sent: Monday, April 25, 2011 7:19 PM
To: [e-mail]; Williams, Andrew E SAW
Cc: [e-mail]; [e-mail]
Subject: RE: Yanceyville Walmart Requested Additional Information
Sue/Andy,
Please see the attached requested information package containing the following revised documents:
* Project Summary Sheet
* Cover Letter
* PCN
* Figure 5-Impact Area Map
* Construction Plan Drawings - 11x17 and Full-Size 24x36 (attachment)
If you have any questions or if additional information is necessary please feel free to contact me.
Thanks so much for all your help!
Chris Tinklenberg, WPIT
Kimley-Horn and Associates, Inc.
dir [phone]
fax [phone]
[e-mail] <inailto:[e-mail]>
From: Homewood, Sue [mailto:[e-mail]]
Sent: Thursday, April 07, 2011 10:59 AM
To: Tinklenberg, Chris
Subject: RE: Yanceyville Walmart
Hey Chris,
Did your client decide how they wanted to deal with the question of the riprap pad? When we talked by phone you were going
to talk to the engineer again and get back to me? Thanks.
Sue Homewood
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed
to third parties.
From: [e-mail]
[mailto: [e-mail]]
Sent: Thursday, March 31, 20114:19 PM
To: Homewood, Sue; [e-mail]
Cc: [e-mail]; [e-mail]
Subject: RE: Yanceyville Walmart
Sue/Andy,
Please see the attached pdf documents detailing your comments below. With regards to your comments concerning the riprap
dissipater, we have had conversations with DLR. It is our hope that we may communicate further with you as DLR wasn't firm
in their understanding of our application. It is our understanding that since we will not be discharging from a point source into a
stream, but instead replacing an existing pipe within a stream and burying that pipe per the 401 standard condition, rip-rap
dissipation would not be necessary. Please contact us at your earliest convenience so that we may discuss and hopefully resolve
the issue and answer any other questions you may have.
Thank you,
Chris Tinklenberg, WPIT
Kimley-Horn and Associates, Inc.
dir [phone]
fax [phone]
[e-mail] <mailto:[e-mail]>
From: Homewood, Sue [mailto:[e-mail]]
Sent: Tuesday, March 08, 2011 1:26 PM
To: Tinklenberg, Chris
Cc: Williams, Andrew E SAW
Subject: Yanceyville Walmart
Hello Chris,
I know your client is anxious for this permit to be issued so I'm contacting you via email about a couple things that I need. If
you prefer to deal by formal letter, just let me know.
In order to ensure that the conditions of the 401 will be met, I need:
* a detail sheet for the dewatering/pump around sequence - and be
sure it includes a statement that all areas will be restored to natural conditions upon removal of the dewatering measures (they
have to match the natural stream depth/width)
* have you verified that DLR is not going to require a riprap
dissipater pad at the end of your culvert (this would mean potentially more impacts than from the pipe alone)
* if they do require a riprap pad, I'll need a detail on the
installation to ensure that the riprap is installed so that the top of the riprap is at the same elevation as the bed of the stream.
* A profile of the pipe to show that the pipe is buried per our 401
standard condition
If you have any questions just let me know.
Sue Homewood
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed
to third parties.
Classification: UNCLASSIFIED
Caveats: NONE
1 2 3 4 5 6 ~ a 9
4xD
SPECIAL STILLING BASIN ~ i~~
c ~ ' w
° THE SPECIAL STILLING BASIN(S) SHALL BE A WATER PERMEABLE FABRIC BAG THAT TRAPS SAND, SILT, AND FINES A5 SEDIMENT LADEN WATER IS PUMPED INTO IT. THIS DEVICE SHALL BE CONSTRUCTED SUCH THAT IT IS PORTABLE AND CAN BE USED ADJACENT TO THE PUMP H05E OUTLET. APED w
0 s END OF RIP RAP. LIMITS OF Klmley'HOrn STREAM IMPACT 24' FROM END and ASSOCIat2S InC
PUMP THE FILTER FABRIC SHALL MEET THE REQUIREMENTS OF SECTION 1056 OF THE NORTH CAROLINA DEPARTMENT OF TRANSPORTATION (NCDOT) STANDARD ZD i W N OF PIPE. (SEE DETAIL THIS NO IJCENSE ;~-0102 ~
AROUND SPECIFICATIONS FOR TYPE 2 FABRIC. PORTION OF EXISTING 48" D -SHEET) 2ooa sauTH BouLEVaRo
HOSE 0o STONE SHALL BE FOR EROSION CONTROL CONTROL STONE (~57). CMP TO REMAIN ~ ~ ~ suITE 4ao i _ CHARLOTTE, NORTH CAROLINA 28203
E n /1 a rl 15' OF TEMPORARY - - r 11 PHONE: [phone]
" ~ " CONSTRUCTION METHODS: IMPACTS ~ ~ ~ Ww 1+ ~ `20' OF ~ Q eon4) 333-ae45 A
" ° ° THE SPECIAL STILLING BASIN(S) SHALL BE A BAG CONSTRUCTED TO A MINIMUM SIZE OF 10'X15' (3MX4.6M) MADE FROM A NONWOVEN FABRIC. IT SHALL ~ PUMP ALL sT ~ P+~ TEMPORARY 0+00 ~ ~ IMPACTS
X " - - " AROUND GRADATION OF HAVE A SEWN IN 8 INCH (20.3CM) MAXIMUM SPOUT FOR RECEIVING PUMP DISCHARGE. THE BAG SEAMS SHALL BE SEWN WITH A DOUBLE NEEDLE MACHINE " ~ ~ U51NG A HIGH STRENGTH THREAD. THE SEAMS SHALL HAVE A MINIMUM WIDE WIDTH STRENGTH AS FOLLOWS: gCHINE ~ ~ _ - - - ~ - ' ,CJ • ~
N HOSE N 8 -12 RIP RAP o ~ y
1 o TEST METHOD MINIMUM SPECIFCATIONS o I - o
a ASTM D-4884 60 LB/IN (10.7 KG/CM) + ~ _ o I__ w
f THE FABRIC USED TO CONSTRUCT THE BAG SHALL BE STABILIZED TO PRONDE RE5ISTANCE TO ULTRA-VIOLET DEGRADATION AND MEET THE FOLLOWING
FILTER FABRIC SPECIFICAT10N5 FOR FLOW RATES, STRENGTH, AND PERMEABILITY: ~ a w
1 SECTION A-A Property Test Method Units Minimum i
2 En lish Metric 9 English Metric CULVERT PLAN
PLAN SCALE: 1 ° = 40'
Weight ASTM D-37760z/yd G/m 8.0 248.0 BEFORE YOU DIG I~ BID SET
ENER Y DI IPAT R F R PUMP AR UND H E TABILIZED UTLET
Grab Tensile ASTM D-46321b Kg 200.0 90.72 P 602 602 PRELIMINARY NOT FOR CONSTRUCTION
IF LEAN WATER CALL1800632-4949 -4949 PROPOSED MANHOLE
Puncture Flow ASTM D-48331b Kg 130.0 58.97 Nc.oNE-ca~LCENrER NOT TO SCALE Irs rHE ~sw NTER B (13-MH) 600 -~N~EN: -58~5a saa
INV. OUT: 582.00 APPROXIMATE
Rate ASTM D-4491 G°I/min/sf L/s/sm 80.0 0.47 4" (SANITARY SEWER LINE EXISTING
598: STA.= 0+91.0 GRADE,..,. 598
Permittivit ASTM D-4991 1/sec 1.5 Y INV. 589.61 APPROXIMATE 6" WATERLINE PROPOSED :STA.= 1+90.00
SPECIAL STILLING BASIN FILTER BAG 596 ~ _ - ~ ~ \ ` ~ ~ GRADE 596
UV Resistance ASTM D-4355 % 70.0 EXISTING TERRAIN B PROPERTY ~ 2" WATERLINE
LINE ~ :STA.= 1+90.00
THE SPECIAL STILLING BASIN(S) SHALL BE PLACED SO THE INCOMING WATER FLOWS INTO AND THROUGH THE BAG WITHOUT CAUSING EROSION. THE NECK OR SPOUT OF THE BAG SHALL BE TIED OFF TIGHTLY TO STOP THE WATER FROM FLOWING OUT OF THE BAG WITHOUT GOING THROUGH THE WALLS. DECK OR SPOUT 594: I ~ 594
~~b4~~~~~°~~ ~ ~ 4 egg ° °ama°~~~ °o~ ~m'°~'° THE SPECIAL STILLING BASIN(S) SHALL BE REPLACED AND DISPOSED OF WHEN IT IS 3/4 FULL OF SEDIMENT, WHEN IT IS IMPRACTICAL FOR THE BAG TO FILTER THE ELECTRIC ~ ELECTRIC TAMPER SWITCH TO FILTER THE STA.= 0+43.00 ~ .STA.= 1+85.00
SEDIMENT OUT AT A REASONABLE FLOW RATE, OR WHEN IT BECOMES PUNCTURED OR TORN. 592: 1 592
B
15.0 - 20.0 FT. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING A SUFFICIENT QUANTITY OF BAGS TO CONTAIN SILT FROM PUMPED EFFLUENT DURING CONSTRUCTION. TRUCTION. :ELECTRIC :TAMPER SWITCH ELECTRIC/TELEPHONE ELECTRIC/TELEPHONE I ;STA.= 1+84.00 STA.= 2+04.00
FILTER FABRIC 8.0 IN. #57 STONE IMPERVOUS DIKE srA.= o+4s.oo 590 ~ 590
NOTE: IF SPECIAL S1ILLING BASIN IS PLACED IN EXISTING FLAT PASTURE STREAM BANK ~ ~ 18" STORM PIPE o
ADJACENT TO AN UNDISTURBED STREAM NO OUTLET IS REQUIRED (PREFERED). ~ THE IMPERVOUS DIKE SHALL NOT PERMIT SEEPAGE OF WATER INTO THE CONSTRUCTION SITE OR CONTRIBUTE TO SILTATION OF THE STREAM. THE /STA.= 2+14.00 ;R, 588 ~ 588 INV. EL.=566.01 ~
IF SPECIAL STILLING BASIN 15 PLACED ON DISTURBED SOIL THEN A STABILIZED ? IMPERVOUS DIKE SHALL BE CONSTRUCTED OF AN ACCEPTABLE MATERIAL IN THE LOCATIONS NOTED ON THE PLANS OR AS DIRECTED BY THE ENGINEER. EXISTING 48" CMP ~ ~ r 1 W C
OUTLET/CHANNEL NEEDS TO BE PROVIDED. ACCEPTABLE MATERIALS SHALL INCLUDE BUT NOT BE LIMITED TO SHEET PILES SANDBAGS AND OR THE PLACEMENT OF AN ACCEPTABLE SIZE STONE LINED LINED STA.= 0+25,00 ~ ~ ~~~RETAINING WALL/ ~
WITH POLYPROPYLENE OR OTHER IMPERVIOUS FABRIC. THE STABILIZED OUTLET WILL CONSIST OF A 1"-6° WELL GRADED MIX OF RIP _ _ _ _ _ ~ _ _ _ _EXISTING INU. 587,68 586: ~ 586 HEADWALL
RAP A MINIMUM OF 1' THICK PER THE DIMENSIONS ABOVE. PLACE FILTER - ~ GROUND EARTH MATERIAL SHALL NOT BE USED TO CONSTRUCT AN IMPERVIOUS DIKE WHEN IT 15 IN DIRECT CONTACT WITH THE STREAM UNLE55 VEGETATION CAN BE ~ w AN BE Q
FABRIC BETWEEN THE RIP RAP AND SOIL FOUNDATION. THE STABILIZED 3:1 ESTABLISHED BEFORE CONTACT WITH THE STREAM TAKES PLACE. 0
OUTLET WILL EXTEND FROM THE SPECIAL 5TILLING BASIN TO THE BANK OF THE 3:1 CHANNEL BELOW THE WORK AREA. 584: I II 584
II ~ z
FILTER FABRIC 3,0 FEET SEQUENCE OF CONSTRUCTION FOR TYPICAL WORK AREA I[ 582 L ~ 582 48" STORM PIPE
SECTION B-B 1. INSTALL SPECIAL STILLING BASIN(S) AND ENERGY DISSIPATOR FOR HOSE/PIPE OUTLET.
PE IAL TILLIN BA IN 2. INSTALL UPSTREAM PUMP AND TEMPORARY FLEXIBLE HOSE. CLASS III RCP ~/STA.= 2+36.00
WITH R K PAD 580 INVERT OUT: 582.00 580 INV 58100 GROUND ELEV. 582.00
PIPE TO BE EMBEDDED 1'
STABILIZED OUTLET 3. PLACE UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING OPERATIONS FOR STREAM DIVERSION. NOT TO SCALE INTO EXISTING GROUND.
4. PLACE DOWNSTREAM IMPERVIOUS DIKE AND PUMPING APPARATUS. DEWATER ENTRAPPED AREA. AREA TO BE DEWATERED SHALL BE EQUAL TO ONE DAYS WORK. NE 578: 578 Gh Cb 00 CO rr N} r~} ~ ~ NN
to to c0 ~ O 0 ~ ~ Os Os r N N r cQ (Q ~ ~ ~ ~ r r
5. PERFORM CULVERT INSTALLATION WORK IN ACCORDANCE WITH THE PLANS. Oi Oi r (0 ~ ~ ~ c4 c4 (D ~ cb ~ N N r r c0 (Q L(jlf7 lt7 lt7 0o co ao ~ rn ~ ~ ~ rn rn ~ rn ~ rn ~ oa oa co oa o0 0~ ~ ~
DOWNSTREAM 6. EXCAVATE ANY ACCUMULATED SILT AND DEWATER BEFORE REMOVAL OF IMPERVIOUS DIKES. REMOVE IMPERVIOUS DIKES, PUMPS, AND TEMPORARY FLEXIBLE HOSE. (DOWNSTREAM IMPERVIOUS DIKES FIRST). a+ao ~+oa 2+ao 2+~a D
SPECIAL STILLING
BASIN UTILIZE A 7. PUMP AROUND AREA TO BE STABILIZED WITH MATTING AT THE END OF EACH WORK DAY. THE IMPERVIOUS DIKE LOCATIONS AS SHOWN ON THIS SHEET SHEET CULVERT PROFILE
STABILIZED OUTLET ONLY SHOW THE UPPER AND LOWER EXTENT OF WORK FOR EACH STREAM SEGMENT. THE CONTRACTOR IS RESPONSIBLE FOR DETERMINING THE SCALE: 1" = 40' HORIZONTAL
INSTEAD OF A LOCATION OF THE IMPERVIOUS DIKE(S) FOR EACH DAYS WORK. ALL GRADING MUST BE STABILIZED AT THE END OF THE DAY. SPECIAL STILLING SPECIAL STILLING SCALE: 1" = 4' VERTICAL
BASIN IF PUMPING BASIN 8. REMOVE SPECIAL STILLING BA51N(S) AND BACKFILL. STABILIZE DISTURBED AREA WITH SEED AND MULCH. ALL AREAS WILL BE RESTORED TO NATURAL JRAL
CLEAN WATER. CONDITIONS UPON REMOVAL OF THE DEWATERING MEASURES P.C. CONCRETE
(SEE NOTES) NOTE: TOP OF MANHOLE TO BE LEVEL (PER SITEWORK SPECIFlCATION SECTION 02751) ~ WITH FINISH GRADE UNLESS OTHERWISE FULL DEPTH OF FRAME HEIGHT TO OUTSIDE W
NOTES NOTED OR DIRECTED BY THE ENGINEER. EDGE OF MANHOLE J USE ADJUSTMENT RINGS AS REQUIRED O
IMPERVIOUS DIKE 1. ALL EXCAVATION SHALL BE PERFORMED IN ONLY DRY OR ISOLATED SECTIONS OF CHANNEL. - - - - - - - - - - - - - - BUT NOT TO EXCEED 12 . ~ - - - - -
2" TRASH DEWATERING PUMP SEE INSET "A" "P" =PAVEMENT THICKNESS
2. IMPERVIOUS DIKES ARE TO BE USED TO ISOLATE WORK FROM STREAM FLOW WHEN NECESSARY. RII SITEWORI RING & COVER PER I F ° a P ~ "F" =FRAME HEIGHT SITEWORK SPECIFICATIONS 2 LAYERS OF I ° • a I ~
3. GRADED STREAM BANKS SHALL BE STABILIZED, WITH MATTING, PRIOR TO PREDICTED RAIN FALL EVENTS, UNLESS ALL RAIN EVENT FLOW CAN BE TAR PAPER ' a
PUMPED AROUND FOR PREDICTED EVENT. r-- - - ~ B. _ -----r I Z I -0^. ",0 RING & COVER PER J
EXISTING I - - - : ~;~~~Y'. I SITEWORK SPECIFICATIONS ~
STREAM 4. MAINTENANCE OF STREAM FLOW OPERATIONS SHALL BE INCIDENTAL TO THE WORK. THIS INCLUDES POLYETHYLENE SHEETING, DIVERSION 4' MAX ~ ~ / \ ~ W Q Q
CHANNEL PIPES, PUMPS AND HOSES. I I (CONE SECTION / \ ~ ~ Z I IS ACCEPTABLE) " ~ \ ~ 2 Z
5. PUMPS AND HOSES SHALL BE OF SUFFICIENT SIZE TO DEWATER THE WORK AREA (IF NECESSARY). _J B' - 24.. ~~J G R ~ J two
Z .4 vl~ - a~~~ X / ~ Q =~Q E p ~ (DIAMETER)
6. DEWATERING PUMP AND PUMP-AROUND PUMP TO BE 2" TRASH PUMPS. W MIN, INSET „A" / ~ ~ Z w=
7. REFERENCE EROSION AND SEDIMENTATION CONTROL DETAILS - 3 (SHEET E-5) FOR ALL RIP-RAP PAD 51ZES. wU~ N W 'r FOUNDATION SLAB AND BASE SECTION MAY BE POURED \ / ~ W ~ Q Q
pp IA. MONOLITHIC OR SEPARATELY WITH A KEYWAY. ~ ~ ~ Z
TEMPORARY FLEXIBLE HOSE THE CEC MUST OBSERVE THE rc ~ INVERT SHALL BE POURED AFTER PLACEMENT OF MANHOLE. ~ ~ 0 p d r O [7
WELL MIXED CLASS BRIP-RAP AND INSTALLATION OF THIS ITEM. ExisTlNC sIDE sLDPE ~Z e e HEIGHT rcm . - - - - - ~4 "L' BARS PLAN OF MANHOLE TOP U o
HUB END DN OUTLET END X57 STONE. SECTIONS. SPIGOT END ON f N 16" LEGS S KEYWAY ~ H ~
INLET END SECTIONS. w ~ d 6 ? IN. WHERE DESIGN RE ULTS W W
~ SEE DESIGN TABLE a LAYER OF NON-WOVEN FILTER za IN LE THAN 6'MIN, USE FUL cur-our T BASE SECTION DIMENSIONS o cn a X~.". ~
A FABRIC UNDER ENURE SECTION OF w 3 VARIABLE 1' CLEAR ~ SIZE OF PIPE MIN. DIA. 0_
a RIP-RAP 1.5' THICK RIP RAP EXISTING SIDE SLOPE ROCK NOTE APRON. 6' N, ~ ~4 AT 10" CENTERS EACH DIRECTION p4" OR SMALLER 48" OR EQUIVALENT WELDED WIRE FABRIC
w EXISTING TOP OF S = D FOR DEPTHS LESS THAN OR EQUAL TO 6': S = 9" FOR DEPTHS GREATER THAN 6'. 30" - 36" 60"
~ THE PRESENCE OF ROCK (AS DEFINED IN THE FLOW D nD DIRE~? EXISTING STREAM EXISTING STREAM ~ SITEWORK SPECIFICATION) SHOULD BE OFIR~ DF F<ow BED BED SURFACE CHANNEL BED SIZ T = 6" FOR DEPTHS LESS THAN OR EQUAL TO 6': T = 9" FOR DEPTHS GREATER THAN 6'. 42" - 48" 72"
~ ANTICIPATED ON THIS PROJECT. ~ ELEVATION ' 1z' SECTION "B"-"B"
°a CONTRACTOR'S BID SHALL INCLUDE " 12' L BARS Z
v CONSIDERATION FOR ADDRESSING THIS ITEM. NON-WOVEN FILTER A - - - - 3, ~ ~ " GENERAL NOTES: ~ DIAMETER AT 10" CENTERS
FABRIC TO EXTEND A , - I MINIMUM DF 12" - - ~ 1. PRECAST MANHOLE SHALL BE MANUFACTURED PER LATEST ASTM C478 AND C913 SPECIFICATIONS. J
BEYOND THE FLARED - _ - ~ 3 GROUNDWATER NOTE ~ O.D. OF MANHOLE + 24' ~ F 2. THE CONFIGURATION DETAILS SHOWN ARE DESCRIPTIVE
a END SECTION THE PRESENCE OF GROUNDWATER SHOULD BE PLAN LINE WITH WELL MIXED CLASS B ONLY AND MAY BE VARIED TO CONFORM WITH AN PRECAST BASE SECTION SET ON CONCRETE BLOCKS B B ESTABLISHED MANUFACTURING PROCEDURE.
i NDN-WOVEN RIP RAP AND #57 STONE. N ANTICIPATED ON THIS PROJECT. CONTRACTOR'S cuLVERr FILTER FABRIC ~ - - J FOUNDATION SLAB AND INVERT POURED MONOLITHIC. 3. FORMED OR CUT OUT OPENINGS SHALL BE PROVIDED
v BID SHALL INCLUDE CONSIDERATION FOR FLARED END SECTION OR 1.5' THICK WHERE PIPE INLETS AND OUTLETS ARE SHOWN ON THE
ADDRESSING THIS ISSUE. SLOPE DRAIN OR CULVERT PROFILE RIP-RAP APRON RIP-RAP 6" UP FROM TOE RIP-RAP CROSS IN SECTION "A"-"A" PLANS. 4. THE TOP OF THE INLET SHALL NOT BE SET BELOW THE TOP >
v UPSTREAM OF SLOPE. BOTH SIDES. SECTION (A-A)
° GENERAL NOTES:
° 1. RIP-RAP SHOULD EXTEND UP BOTH SIDES DF THE APRON AND AROUND THE END OF THE PIPE OR CULVERT AT THE DISCHARGE OUTLET AT A MAXIMUM SLOPE DF 2:1 AND A HEIGHT NOT I/~ OF THE OUTLET PIPE. J ~f S~APEG~ 6. WHIEREORPIPESNDOSNOT ENTERUOR EXITPRADIALLYGUSE NEXT r~,
~ ~ IMPERVIOUS i ~ LESS THAN TWO THIRDS THE PIPE DIAMETER OR CULVERT HEIGHT. PRECAST FOUNDATION SLAB LARGER SIZE MANHOLE.
i DIKE 2. THERE SHALL BE NO OVERFLOW FROM THE END DF THE APRON TO THE SURFACE OF THE RECEIVING CHANNEL. THE AREA TO BE PAVED OR RIP-RAPPED SHALL BE UNDERCUT SO THAT THE INVERT OF THE APRON SHALL BE AT THE SAME GRADE (FLUSH) WITH THE SURFACE OF THE RECEIVING CHANNEL. THE APRON SHALL HAVE A CUTOFF OR TOE WALL AT THE DOWNSTREAM END. EXPANSIVE 7. CIRCUMFERENTIAL REINFORCEMENT SIZE AND PLACEMENT MORTAR SHALL BE IN ACCORDANCE WITH THE STANDARD
ti ~ 3. THE WIDTH OF THE END OF THE APRON SHALL BE EQUAL TD THE BOTTOM WIDTH OF THE RECEIVING CHANNEL. MAXIMUM TAPER TO RECEIVING CHANNEL 5:1. A A - - - - SPECIFlCATIONS TO A MAXIMUM DEPTH OF 20 FEET. OVER w 2D FOOT DEPTH CIRCUMFERENTIAL REINFORCEMENT IS H
i 4. ALL SUBGRADE STRUCTURE TO BE COMPACTED TO 95% OR GREATER. INCREASED TO 0.24 SQUARE INCHES STEEL REQUIRED PER F LINEAR FOOT, TO A MAXIMUM DEPTH OF 30 FEET,
~ 5. THE PLACING OF FILL, EITHER LOOSE OR COMPACTED IN THE RECEIVING CHANNEL SHALL NOT BE ALLOWED. U ~ ~ 6. NO BENDS OR CURVES IN THE HORIZONTAL ALIGNMENT OF THE APRON WILL BE PERMITTED. B. FOR PIPE CONNECTIONS, A RUBBER GASKET IN DESIGNED BY: ~CW
y ~ ~ 7. THE CEC MUST BE ONSITE AND WITNESS THE INSTALLATION OF THIS BMP AT EVERY LDCA110N SPECIFlED ON THE PLANS. THE CEC SHALL BE NOTIFIED A MINIMUM OF 72 HOURS PRIOR TO 12" 3" C44~ORNC9231ANDACASTRNTEGRALLYKINTMANHOLEAMAYBE
~ ~ INSTALLATION. FAILURE TO NOTIFY THE CEC WILL RESULT IN THE REMOVAL AND REPLACEMENT OF THE BMP AT NO ADDITIONAL COST TO THE OWNER. USED AS AN ALTERNATE TO EXPANSIVE MORTAR. DRAWN BY: ~CW I STANDARD CHECKED BY: JMH
~ ~ Pipe Pipe Upstream Downstream Drainage Peak Flow 10-yr Apron Apron Stone Apron L--- ---J FOOTING 12' SHAPE
J ` u ameier mope nven t ev. nven t ev. Hrea u ann ng s uio v e oc ry Lone Lengin vu ain ass n CKness O.D. OF MANHOLE + 24" DIAMETER I DATE: 02-16-11
(in) (ft) (ft) (ac) n., (cfs) (fps) O (ft) (ft) O (in)
a Culvert (C-4) 48 0.5 582.00 581.00 26.02 0.013 42.62 7.7 2 24 12 B" 18 CD " Well mixed Class B Rip-Rap and #57 stone. PRECAST BASE SECTION SET ON CONCRETE BLOCKS
EXAMPLE F PUMP-AROUND OPERATION > From StormCAD or Flowmaster Software PLAN OF FOOTING FOUNDATION SLAB AND INVERT POURED MONOLITHIC. PROJECT#: 015476140
P NOT TO SCALE See Figure 8.06. b.1 this sheet from the NCDENR Manual ALTERNATE FOOTING
2" TRASH PUMP-AROUND PUMP CULVERT RIP-RAP APRON X
U / NOT TO SCALE PRECAST MANHOLE C-05
Y
THIS DOCUMENT, TOGETHER WITH THE CONCEPTS AND DESIGNS PRESENTED HEREIN, AS AN INSTRUMENT OF SERVICE, IS INTENDED ONLY FOR THE SPECIFIC PURPOSE AND CLIENT FOR WHICH IT WAS PREPARED. REUSE OF AND IMPROPER RELIANCE ON THIS DOCUMENT WITHOUT WRITTEN AUTHORIZATION AND ADAPTATION BY KIMLEY-H( 4 BY KIMLEY-HORN AND ASSOCIATES, INC. SHALL BE WITHOUT LIABILITY TO KIMLEY-HORN AND ASSOCIATES, INC.