20060690 Ver 6_More Info Received_20090615

P ENGINEERING • LAND PLANNING SURVEYING
um -------
(IMsL.Sue Homewood
uality - WSRO
585 Waughtown Street
Winston-Salem, NC 27107
Dear Ms. Homewood:
1@@P=916125
JUN 1'5 XBWJ
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VIER IDSM93NB MMIR ORAW
We have received your comments and have addressed the items on your list as follows:
Comment 1: For both projects please provide a detail showing restoration of temporary
crossing areas. The detail should include clear instructions that indicate riprap is to be removed
and/or reinstalled to below the water level and sunk into the stream bed. The Division prefers
that natural matting material be used where appropriate.
Response to Comment: A detail showing restoration of temporary crossing and instructions
that the rip rap is to be removed or installed to below water level and sunk into stream bed
has been provided for both projects. We've enclosed 5 copies revised sheets 17 (Contract
2) and 13 (Contract 3).
Comment 2: For Contract 3: The crossing at station ---28+50 crosses two channels at the
confluence. In addition, the crossing may not be perpendicular to one or both streams. The
confluence of two streams is a difficult crossing to restore naturally and ensure stability. The
Division would prefer to see two perpendicular crossings, one of each channel, or realignment of
the sewer line so that it only crosses one channel if at all possible. If not possible, please show
what other alignments you analyzed at and why they were unacceptable.
Response to Comment: This area was determined to be okay per our site visit with you on
May 12, 2009. The smaller stream was determined be a springhead and will not have any
major flows.
Comment 3: For contract 2: It appears there is a road/drive with a culvert within the area of
station 62+60. The Division would prefer a crossing in the vicinity of the pipe rather than in an
undisturbed area closer to the wetland. Have alternative alignments been investigated within
this area?
DAVIS-MARTIN-POWELL & ASSOCIATES, INC.
6415 Old Plank Road, High Point, NC 27265
[phone] • Fax [phone] • www.dmp-inc.c m REC?iv?O
N.C. beat. of ENR
JUN 0 5.2009
June 4, 2009 Winston•Salem
Regional pffice
Re: City of Trinity, NC
Phase 4A Sewer - Contracts 1 & 2
Application for Water Quality Certification
DMP Project E-4096 (BF)
Response to Comment: This area was determined to be okay per our site visit on May 12,
2009. Alternative alignments were investigated in this area. The alignment is designed to
Ms. Sue Homewood
NCDENR DWQ June 4, 2009 Page 2 of 2
remove the existing pump station and with future projects in mind. We compared the current
alignment to the alignment of the sewer running through the existing drive. The proposed
stream impact is limited to the impact of the installation of the pipe only. This temporary
crossing will not be used for equipment crossing. If the sewer is realigned as suggested the
existing pipes and drive will have to be removed and replaced which will create more
impacts and need more stabilization than the proposed crossing.
If you or your staff have any questions or require additional information, please do not hesitate to
call our office, or email me at [e-mail]. We appreciate your assistance in this matter
and look forward to hearing from you.
Sincerely,
DAVIS-MARTIN-POWELL & ASSOCIATES, INC.
&,,, /
U r''0
Jer my . McCall, E.I.
C: Ms. Ann Bailie, City of Trinity
File (enc)
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MAXIMUM PLACEMENT OF POST USING HOGWIRE IMTH 4¢s 0~ . ~~1~,
STATION APPROVED EROSION CONTROL FABRICS TO BE 10 FEET. VARIES (SEE PLAN) ESTABLSHING VEG ULCHING OF ALL DISTURBED AREAS. 2 MIN, PIPE OUTLET TO FLAT, PIPE OUTLET TO WELL-DEFINED CHANNEL IF FLOW IS PRESENT DURING SEWER LINE w~ INSTALLATION, TEMP. BYPASS PUMP TO ~ ~ ~ i~ 4,
EPARATION, LIMING, FERTILIZING, SEEDING AND M N TEN PERCENT MAGNESIUM MAXIMUM PLACEMENT OF POST WITHOUT HOG WIRE USING NON-DEFINED CHANNEL NOTES THE WORK INCLUDES SEEDBED PR GROUND LIMESTONE CONTAINING NOT LESS THA APPROVED EROSION CONTROL FABRICS TO BE o 0 0 0 0 o c POST BE INSTALLED BY CONTRACTOR. ~
LIME SHALL BE DOLOMITIC AGRICULTURAL fi FEET TO 8 FEET APART, 00 0~0~°~~8~ o ~ °o ° ° 1. La IS THE LENGTH OF RIP NGTH OF RIPRAP ~ ~ WATER LEVEL TO BE MA{NTAINED MIN, m ~ Mi a __r
- R 6 FEET IN HEIGHT SILT-FENCE oao8 ~o~0°Ooo~°~0°°0 0 ° SILT-FENCE PRON PRODUCT. ALL FERTILIZER SHALL BE POST METAL T POST 5 FEET 0 OVER HOG WIRE ooa~oo`~~°~o~o~o~o~o boo OVER HOG N1RE A 24 BELOW TOP OF SANDBAGS. v~~~'' ~ THE MAXIMUM STONE
FERTILIZER SHALL BE STANDARD COMMERCIAL THE CHEMICAL ANALYSIS OF THE PRODUCT AND THE -DEPENDING ON FILL SLOPE, 2, d=1.5 TIMES THE MAXIMUP IVERED IN BAGS BEARING THE MANUFACTURER'S NAME, IZER SHALL BE STORED IN A MANNER WHICH WILL 3d0 DEL MEDIATELY AFTER DELIVERY, THE FERTIL A A DIAMETER BUT NOT LESS T NOT LESS THAN 6°. A A FLOWS FROM WORK AREA ti~~
WEIGHT. IF NOT USED IM S FABRIC 36 INCHES IN WIDTH (MUST MEET ENGINEERS SHALL BE PUMPED INTO ~ EFINED CHANNEL - _ 10'x10' DEWATERING BASINS ,
ALLOW IT TO HARDEN OR DESTROY ITS EFFECTIVENE5 SPECIFICATIONS FOR EROSION CONTROL) 3• IN AWELL-DEFINED CHAN N07 ON REGIONAL AND SEASONAL CONSIDERATIONS, PURITY OF EXTEND THE APRON UP 0 APRON UP ON THE W/STABLE OUTLET C~ 2.1
GRASS SEED SHALL BE AN APPROVED MIXTURE BASED MINATION SMALL BE A MINIMUM OF EIGHTY-FIVE STONE ~4 WASHED STONE TO BE PLACED 12 INCHES CHANNEL BANKS TO AN JKS TO AN SIDE SLOPE
D SHALL BE A MINIMUM OF NINETY PERCENT AND THE GER DEEP AT SILT FENCE TOP VIEW d SEE SEED LABEL SHALL BE A CERTIFIED SEED LABEL. 8LE AND APPROVED MATERIAL 0 ELEVATION OF 6" ABOVE PERCENT, THE HOG WIRE 6 ABOVE THE
I T OF DRY, SMALL GRAIN STRAW, DRY HAY, AND OTHER SUITA MAXIMUM TALLWATER DEP MULCH SHALL CONS S METAL FENCE POST METAL SILT-FENCE TO TOP PF THE BANK, .LWATER DEPTH OR ~ ~
ESTABLISHING TEMPORARY VEGETATION GHT TO FINAL GRADE FOR A PERIOD OF MORE SILT-FENCE SILT-FENCE FENCE POST PLAN HE BANK, TOP OF BANK ~ z C~
SEEDING OF DENUDED AREAS THAT WILL NOT BE BROU pREVIOUS SPEGIFlGATIONS ~ OVER HOG WIRE OVER HOG WIRE WHICHEVER IS LESS. THE TEMPORARY > LESS. PLAN - . LL . f~. _ _ ~NKET OR FILTER a ~ ~ ~
S BUT LESS THAN ONE YEAR SHALL BE IN ACCORDANCE WITH .TH FOR THE 1.5 FT. 4. A FILTER BLANKET OR FIL THAN 3D WORKING DAY MPORARY SEEDING SCHEDULE. TEMPORARY SEEDING SCHEDULES AND THE FOLLOWING APPROPRIATE TE MIN. , ~ LO FA$RIC SHOULD BE INSTAL LD BE INSTALLED 0 0 q A
PIEDMONT AREAS ARE AS FOLLOWS: 2 • x TW N THE RIP-RAP AI ~LOw 'JFr. 1r` o o ~ a a ~ BE EE :RIP-RAP AND LL3 ~ ~
TDN RATES (LB/AC) srRAW Ak ~o r " ~ ~ _ _ _ . SOIL FOUNDATION. APPLiCA i SPECIES SEED 10-10-iD AGRICULTURAL °o`ao ~o _ - - TION. a 0 0 0 TEMP. PIPE p p La
RECOMMENDED FERTILIZER LIMESTONE _ - - STREAM ~
S SEDIMENT STRUCTURAL STONE 1.5 FT, d = _ SEEDING DATE NNUAL 120 750 2000 4,000 _ - - 1 -MAY 1 RYEGRAIN A CONTROL STONE ~ MIN. - JAN 4,000 g FLOW . a ,0 O ,0 - `0
LESPEDEZA (KOBE) 50 4 000 a _ o00 0
- uc 15 GERMAN MILLET 40 75D 2000 ~ DD FRONT VIEW FILTER MAY 1 A SECTION A-A RYEGRAIN 120 tooo 2000 4, BLANKET AUG 15 - OEC 30 ER0510N STONE - - -Q Id I-
GROSS SECTION N TE: ~~-0 _ .
ISHING PERMANENT VEGETATION AYS OR 90 CALENDAR O ESTABL PERFORMED WITHIN 15 WORKING D T E T P R O TE C TI BE TR CTURAL STONE SHALL BE RIP RAP 0 U L THE PERMANENT SEEDING OF DENUDED AREAS SHALL CCORDANCE WITH THE PREVIOUS SPECIFICATIONS AND THE S U Z 0 TE C TI O N Q - _ - =u"r ~ -~li=~ II-111= - PROP. - ( i ~ ~ TOP OF BANK
DAYS AFTER FINAL GRADE 15 REACHED AND SHALL BE IN A IITLET (GLASS "B" STONE FOR EROSION N.T.S. E OV T V N PURPOSES, S NTROL ULE. ARY GD HED P 0 R LNG SG T M FILTER sEWER ~--_i o in
FOLLOWING APPROPRIATE PERMANENT SEED SECTION A-A BLANKET PIPE ~ ~ 1' THICK #4 o N _ ~ ~
SUCH AS WOODED UNDEVELOPED AREAS AND CROSS-COUNTRY UTILITY TYPE 1 AREA -LOW MAINTENANCE AREAS p REGULARLY. N.T.S, WASHED STONE ~ ~ ~ ~ o
EASEMENTS, WHICH ARE TYPICALLY NOT CLEARED ARE MOVE Z U ~ ~ Z
ION RATES LB AC) APPLICAT ( / GENTLE SLOPES STEEP SLOPES min ft SANDBAGS LIMITS OF CONSTRUCTION ~ ~ ~ ~ °0
SEEDING MIXTURE IRE ENCE METAL POSTS MAX.-°~ 80 100 2.0' INTO GROUND AS SHOWN ON PLANS a z `0 a
20 30 (USE ONLY UNSCARIFIED SEED AFTER AUG 15) STEEL POST ~ (REO'D W/BURLAP ONLY) SERICEA LESPEDEZA 10 ~ , ~o~~'
KOBE LESPEDEZA 10 -10-10 FERTILIZER 1000 1000 x FABRIC 10 0 Q z nt.
AGRICULTURAL LIMESTONE 400D 400 g ~ (NO WIRE FENCE REQb) r'~ # 57 sro PLAN ~ _ ~ X ~ a
° ° 19 GAlJGE HARDWARE 4 ~ ~C?d0 ~ N E POLYETHYLENE FABRIC TOP OF BANK ~ = U"
USED AS FOLLOWS: I I BACKFILL TRENCH WITH SOIL I, ENDMENTS WILL ALSO BE ~ M cMATERIAL AND TAMPING OR CLOTH (I/4 MESH) ~ 8" ADDITIONAL SOIL AM ON FACE (8 MIL. THICK) ~ ~
10 RATES LB AC) RYEGRAkN o Q ~WASHEO STONE TO 6" ABOVE ~ APPLICAT N ( / ED GERMAN MILLET HULL o p ~ GRO ND, n`_' Z ooooaoo0oo Z
BERMUDAGRASS 0 a Q ~ 4 ~ OTTOM STREAM )TTOM STREAM CHANNEL g
FEB 15 -MAR 21 40 ~~~i~,~_~~~A~~%D; t 5 '~i or ~ 16" MAR 21 -MAY 1 15 10 ~ - ~ ,etc CROSS SECTION STREAM ~ 0 0 4 0 Q 00,0 0 0 0 0 I"`_
NE 16 y,`~ti~., o MAY 1 - JU 10 FLOW N ~ TEMP. PIPE, 60" STEEL~~OR GAST;IR~ N
- UG 15 40 I ,y57 WASHED JUNE 15 A iv STONE ° _ AUG 15 - OCT 25 40 18"'
OCT 25 -FEB 15 2.' 1 SIDE SLOPE # 57 STONE MIN.
M LAWNS PARKS, SCHOOLS, CHURCHES, BUSWESSES AND TYPE 2 AREA -HIGH MAINTENANCE AREAS SUCH AS HOE TO AN AESTHET1C STANDARD. PROP, c c o 0 0 0 0 ~ ECREEK ~ TEMPORARY SEWER
AINTAINED REGULARLY ` a RECREATIONAL AREAS, WHICH ARE TYPICALLY M \i'ii ~ r(% 0 0 0 0 0 0 0 10 MIN. PIPE STONE DAM
N CE ~ T F E I'GH BASIN L TANDARD CA RY S s PORA TEM APPLICATION RATES (LB/AC) FEB 1 -MAR 31 MAR 31 -AUG 20 YARD INLET PROTECTIO ?i` 0 0 0 0 0 0 0 0 0 SANDBAGS ~
SEEDING MIXTURE: AUG 20 - OCT 25 AUG 20 -FEB 1 N , T, S. N.TS t fl ~ o0000000000o r~rr;~ rr,r CLASS e SYNTHETIC FILTER Q
BLEND OF 3 OR MORE TURF-TYPE TALL FESCUES 200-250 30 NATURAL IATURAI o 0 0 0 0 0 SECTI®~V ®A
KOBE LESPEDEZA 1000 1000 GROUND ~ ~ROUNO o 0 0 ~,r STONE FABRIC J H
i 0-10-10 ,FERTILIZER 4000 AGRICULTURAL LIMESTONE 4000 CONSTRUCTION SPECIFICATIONS
E APPLIED AUG 20-FEB 1 ONLY) 40 AR]NEN RIDGE NLTROGEN(TO B s~_p^ w/ 2i SIDE SLOPES STONE SECTION ~ a
1. UNIFORMLY GRADE A SHOLLOW DEPRESSION APPROACHING THE NOTES.. ~ N ~ w ~ o a
ASS HAY AND SHALL BE APPLIED AT THE RATE OF 4000 INLET. MULCH SHALL BE WHEAT OR OAT STRAW, OR PEANUT OR GR , 18^ ALL BE APPUER UNIFORMLY WITHOUT CLUMPS OR BUNCHES OF SLOPE _ F T INTO THE GROUND TEMPORARY ROCK CHECK DAM W m Z
ALL SEEDEO.AREAS. MULCH sH 2. DRIVE 5 FOOT STEEL POSTS 2 EE TE~ POUNDS PER ACRE TO _ H SHALL BE APPLIED IMMEDIATELY AFTER SEEDING AND PREFERABLY ON THE SAME WORKING DAY i ~ IN THE INLET, SPACE POSTS EVENLY AROUND THE MATERIAL MULC BY TACKING WITH ASPHALT, ROVING, OR NETTING BY CRIMPING T- , SURROUND G 1) EROSION STONE TO BE "CLASS II" RIP-RAP ~0=18° UNLESS DESIGNATED Q
THAT THE SELECTED AREA 1S SEEDED, ANCHOR STRAW ISK HARROW SET SO IT WILL NOT COVER THE ~ ^ ON STEEP SLOPES, USE A DULL 0 PERIMETER OF THE INLET, A MAX. OF 4 FEET APART. CONSTRUCT )NSTRUCTCON SPECIFICATIONS 2) KDEYESANDBAGSN~ FLIER FABRIC INTO CREEKBANKS AND INVERTS WHEN U z ~ r
WITH A MULCH ANCHORING TOOL. I 3. SURROUND THE POSTS WITH WIRE MESH HARDWARE CLOTH, , USE 2 TO 15-INCH STONE (N.C. DEPARTMENT OF TRANSPORTATION POSSIBLE SANDBAGS TO BE MIN. 24" ABOVE WATER LEVEL. o ~ ~ Q w Q ~
SECURE THE W{RE MESH TO THE STEEL POSTS AT THE TOP, a USE 2 TO 3) SANDBAGS, POLYETHYLENE & TEMPORARY CMP MAY BE DELETED ON DRAINAGE ~ Q w ~ = v CLASS A OR CLASS B EROSION CONTROL STONE). ~ ~ Q o o v ~ v~
MAINTENANCE AND RESEEDING OF THE WORK, BY WATERING, MOWING, AND CONSTRUCTION SPECIFICATIONS MIDDLE, AND BOTTOM. PLACING A 2-FOOT FLAP OF THE WIRE CLASS A 0 THE CONTRACTOR SHALL MAINTAIN ALL SEEDED AREAS UNTIL ACCEPTANCE TSOEVER SHALL BE MMENDEO. KEY THE S' KEY THE STONE INTO THE DITCH BANKS AND EXTEND IT BEYOND THE DITCHES, WITHOUT ACTIVE FLOW, AS DIRECTED BY ENGINEER.
REAS WHICH FAIL TO SHOW A SATISFACTORY STAND, FOR ANY REASON WHA 1, INSTALL THE DIVERSION AS SOON AS THE RIGHT OF WAY HAS BEEN MESH UNDER THE GRAVEL FOR ANCHORING IS RECD WEEDING. ANY A ABUTMENTS A MINIMUM OF 18 INCHES TO AVOID WASHOUTS FROM 4) CONVERT TO PERMANENT CHANNEL STABILIZATION AFTER UTILITY LINE IS m WSTALLED.
WING THE GRASSING PROCEDURE SPECIFIED HEREIN. DAMAGE, RESULTING FROM EROSION, GULLIES, CLEARED AND GRADED. ABUTMENTS RETREATED fOLLO I AND 4. PLACE CLEAN GRAVEL (NC DOT #5 OR #57 STONE) ON A 2:1 OR OTHER CAUSES PRIOR TO ACCEPTANCE, SHALL BE REPAIRED BY REFILLING WITH TOPSOL 2, DISK THE BASE FOR THE CONSTRUCTED RIDGE BEFORE PLACING FILL, 16 INCHES AROUND THE WIRE AND OVERFLOW WASHOUTS, PROCEDURE SPECIFIED HEREIN. SLOPE WITH A HEIGHT OF OVERFLOW AROUND THE DAM. 5) BACKFILL OVER PIPE TO BE OF NON-ERODIBLE MATERIAL (ROCK OR STONE).
RETREATED FOLLOWING THE GRASSWG 3. TRACK THE RIDGE TO COMPACT IT TO THE DESIGN CROSS SECTION, '
4, LOCATE THE OUTLET ON AN UNDISTURBED AREA. ADJUST FIELD SMOOTH TO AN EVEN GRADE. SPACING OF THE DIVERSION TO USE THE MOST STABLE OUTLET 5. ONCE THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, 1, PLACE STD' PLACE STONE TO THE LINES AND DIMENSIONS SHOWN IN THE PLAN O(V
N AREAS, WHEN NATURAL AREAS ARE NOT DEEMED SATISFACTORY, REMOVE ACCUMULATED SEDIMENT, AND ESTABLISH FINAL GRADING A FILTER F SEQUENCE of CONSTRUCTIO A FILTER FABRIC FOUNDATION. p
PROVIDE OUTLET PROTECTION, ELEVATIONS, 2, KEEP THE ~ KEEP THE CENTER STONE SECTION AT LEAST 9 INCHES BELOW TEMPORARY CULVERT TYPE
TELEPHONE AT 5. IMMEDIATELY SEED AND MULCH THE PORTIONS OF THE DIVERSIONS CT THE AREA PROPERLY AND STABILIZE IT WITH NATURAL G NCDENR LAND QUALITY SECTION PRIOR TO CONSTRUCTION BY NOT SUBJECT TO CONSTRUCTION TRAFFIC. STABILIZE WITH GRAVEL 6, COMPA 1. NOTIFY BANKSAL GROUND LEVEL WHERE THE DAM ABUTS THE CHANNEL STREAM CROSSING U
AREAS TO BE CROSSED BY VEHICLES, GROUNDCOVER. BANKS, [phone], FER TO ENCLOSED EXTEND STONE AT LEAST 1,5 FT BEYDND THE DITCH BANKS TO KEEP w
RUCTIQN MEETING, OR RE 3. EXTEND STS 2, OBTAIN GRADING PERMIT AT PRE-CONST MAINTENANCE D SPECIFICATIONS BOOK. MAINTENANCE OVERFLOW OVERFLOW WATER FROM UNDERCUTTING THE DAM AS IT RE-ENTERS N.T.S. ~
COPY IN CONTRACT DOCUMENTS AN TALL CONSTRUCTION PERIODICALLY INSPECT RIGHT OF WAY DIVERSIONS FOR WEAR AND AFTER THE CHANN THE CHANNEL
3. INSTALL STABILIZED CONSTRUCTION ENTRANCE~MUD RAMP A EVERY HEAVY RAINFALL FOR EROSION DAMAGE, IMMEDIATELY REMOVE HECK OUTLET AREAS INSPECT INLETS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT
ENTRANCES. SEDIMENT FROM THE FLOW AREA AND REPAIR DIKE. C TO INSTALL EROSION CONTROL DEVICES. AN0 MAKE TIMELY REPAIRS AS NEEDED. WHEN PERMANENT ROAD {NCH OR GREATER) RAINFALL EVENT, CLEAR THE MESH WIRE OF 4. CLEAR SITE ENOUGH MAINTENAN ~INTENANCE Q
T ND EROSION CONTROL DEVICES. DRAINAGE IS ESTABLISHED AND 1HE AREA A80VE THE TEMPORARY RIGHT ANY DEBRIS OR OTHER OBJECTS TO PROVIDE ADEQUATE FLOW FOR 5. INSTALL SEDIMEN A ND IRECTIVE OF THE OF WAY DIVERSIONS IS PERMANENTLY STABILIZED, REMOVE THE DIKE AND PECT CHECK DAMS AND CHANNELS FOR DAMAGE AFTER EACH RUNOFF °
PER CONSTRUCTION PLANS A D SUBSEQUENT RAINS. TAKE CARE NOT TO DAMAGE OR UNDERCUT INSPECT CHECK t 6, PERFORM CONSTRUCTION ACTIVITIES FILL THE CHANNEL TO BLEND WITH THE NATURAL GROUND, AND :NT. ANTICIPATE SUBMERGENCE AND DEPOSITION ABOVE THE CHECK DAM >
THE WIRE MESH DURING SEDIMENT REMOVAL. REPLACE STONE AS EVENT, ANTICIPAI ENGINEER. APPROPRIATELY STABILIZE THE DISTURBED AREA, ION CONTROL FACILITIES THROUGHOUT DURATION OF PROJECT. NEEDED, AND EROSION FRS EROSION FROM HIGH FLOWS AROUND THE EDGES OF THE DAM. CORRECT ~ . _ r , ~ - N u~
7. MAINTAIN AND GLEAN EROS N IS COMPLETE SEED SITE. ALL DAMAGE IMM .DAMAGE IMMEDIATELY. IF SIGNIFICANT EROSION OCCURS BETWEEN DAMS. 'i '
8, ONCE CONSTRUCTIO ~ CDEER LAND M RANTED BY N N BER INSTALL A PROTE vA Is c TH E D APPRO L AL EAR I ED AN TYP I C 9, AFTER ALL AREAS HAVE BEEN STABLE Z TALL A PROTECTIVE RIPRAP LINER IN THAT PORTION OF THE CHANNEL ~
SECTION REMOVE TEMPORARY EROSION CONTROL DEVICES, (PRACTICE 6,31, QUALITY N.T.S. ri~ , t. ACTICE 6.31. RIPRAP-LINED AND PAVED CHANNELS). ~ ~ i p ,
REMOVE SEDIMEN \ R. PQ ~ COVE SEDIMENT ACCUMULATED BEHIND THE DAMS A5 NEEDED TO PREVENT ~r P,p ~ t~
`1, , NAGE TO CHANNEL VEGITATION ALLOW THE CHANNEL TO DRAIN THROUGH ~ ~+ead~,ail
P DAMAGE TO CHAP THE STONE CHEC STONE CHECK DAM, AND PREVENT LARGE FLOWS FROM CARRYING ~
GEN RAL MAINTEN NCE PROVISI N / VARIES / SEDIMENT OVER ' )IMENT OVER THE DAM. ADD STONES TO DAMS AS NEEDED TO MAINTAIN ~
ACH PERIOD OF DESIGN HEIGHT A 31GN HEIGHT AND CROSS SECTION. _
INSPECT TEMPORARY EROSION CONTROL DEVICES AFTER E y/\//\// / / / CHECK DEVICES FOR RILLS, EROSION, OR PIPING SIGNIFICANT RAINFALL, FTER ' ct,, _ ~
WITHIN 15 WORKING DAYS A , \ \ \ \ \ \ \ \ \ ~ ('O EXIST. CHANNEL SLOPE ~Q ALL AREAS SHOULD BE STABILIZED ~
NSTRUCTION IN THAT AREA. DENUDED AREAS SHALL NOT EXCEED CO BILIZATION, ALL AREAS / Class3Ri~rap p- ~ a.,~~.~
1000 LINEAR FEET WITHOUT SEEDING AND STA / / Q ~Q PERMANENT STABILIZATION SHALL BE /\\j~ l ~ ~~~I 'r~,'~ ~ ~
DAMAGED PRIOR TO ESTABLISHING EXIST. CREEK WIDTH IMMEDIATELY RE-ESTABLISHED. /~~j\\\j / / / / \ F. Q
/i 3. \ Q Q E ? ~ 5. Flow ~ ~ ,.F~; V e , ~s ' ~ A ~ ~ 3 ~ ~
° ADDITIONALLY, THE FALLOWING ITEMS SHALL BE PERFORMED IN ~//VA// 6, / /V~.
SPECIFIC CONSTRUCTION DETAILS ON THIS SHEET. ~ Q Q~ Q~Q~Q~Q ANCE WITH THE / / \ \ GO o OCGORD / ~ / / / //r ~
ND INLET PROTECTION DEVICES SHALL BE CLEANED FILTER FABRIC ~ 1. SEDIMENT BASINS A DESIGN ~~7~' ~ ~ `a
~ WHEN SEDIMENT HAS ACCUMULATED TO ONE-HALF OF THE - _ Z ~ ~ ~
~ DEVICE. THE SEDIMENT SHALL BE PLACED IN THE - N DEPTH OF THE \ i\ \ - - - EXIST, CREEK . ~ ~ k:.t
L AREA OR APPLIED TO THE LAND AREA. ANY GRAVEL _ _ _ _ ~ DISPOSA H LL BE REPLACED WITH BOTTOM SURFACE RIP-RAP LINING, Q FACINGS CONTAMINATED BY THE SEDIMENT S A
GRAVEL. \~vAiAvAjA~i /vA Vv STONE SIZE VARIES ~ CLEAN !i\//\//~ _ ~ F~
_ r~1 '
ND EARTH BERM DIVERSIONS SHALL BE \ ~ ` a 2. RIP-RAP, SILT FENCE, A ND 8 /\\/~/\\/\\/\\%\\j/\\//~\ \r~ t ~IO11M' 1 tai Y ~ ~ ~1y'
~ INSPECTED FOR EROSION, DISPLACEMENT, BREAKS, OVERRUNS, A ¢ Imo. Q ,THESE DAMAGES SHALL BE REPAIRED BY / EXCESSIVE SEDIMENTATION r1 .2 ~ ~ (/~~J
I RETURNING THE DEVICE TO ITS DESIGN CONDITION. / / PER DWQ REGULATIONS, PLACEMENT OF CHANNEL
3 STABILIZATION STONE SHALL BE LIMITED TO THE BOTTOM
3. SEEDED AREAS ERODED PRIOR TO PERMANENT STABLIZATION SHALL BE NKS OF CHANNEL WHICH ARE DIRECTLY IMPACTED BY o HEO UNTIL A SUITABLE AND BA
ro REGRADED AS NECESSARY, RESEEDED AND MULC THE SEWER LINE INSTALLATION. RIP-RAP SHALL NOT BE ~ SURFACE IS ACHIEVED.
I EFORE INSTALLING BLANKETS, INCLUDING APPLICAAON OF LIME, PLACED IN AREAS THAT WERE NOT DISTURBED, ANO SHALL a 1. PREPARE Solt B
FERl1LIZER, AND sEED, ONLY BE INSTALLED BELOW THE NORMAL HIGH WATER LEVEL. U 2 BEGIN AT THE TOP OF THE CHANNEL BY ANCHORING THE BLANKET W A 6" DEEP RIP-RAP SHALL ONLY BE INSTALLED BELOW THE EXISTING Natural6rr'~rtd
C EROSION CONTROL PROCEDURE x s" WIDE TRErrcK BACKFILL AND COMPACT 1NE 1RENCH AFTER STAPLIN . o KET IN DIRECTION OF WATER FLOW ON BOTTOM OF CHANNEL. GRADE OF THE CHANNEL, SUNK INTO THE GROUND, SUCH Riprap Headwall, l' min ~ , ,
w e soil 3, ROLL CENTER BEAN sTYLE WITH A s" OVERLAP. USE A THAT ORIGINAL GRADES AND CONTOURS ARE NOT MODIFIED. ~ The CONTRACTOR shalt conform to all requirements of th 4. PLACE BLANKETS END OVER END (SHINGLE
° ion control lows and regulations of the DOUBLE ROW OF STAGGERED STAPLES 4' APART TO SECURE BLANKETS RIP-RAP SHALL NOT BE PLACED ON TOP 4F THE SURFACE ~ sedimentation and eros 5, FULL LENGTH EDGE OF BLANKETS AT TOP OF SIDE SLOPES MUST BE ANCHORED t -?~--^-3'~ height from roadshaulder ~ 'li x l t ` Y9 I
r h Carolina as established and enforced by the " PACT THE 1RENCH AFTER OF THE GROUND UNDER ANY CIRCUMSTANCES. ro State of Not f IN 6 DEEP X 6 WIDE TRENCH. BACKFILL AND COM
v Land Quality Section of the North Carolina Department o STAPLING. , v ~ ~ F?ipe Invert
Environment and Natural Resources, These requirements 6. BLANKETS ON SIDE SLOPES MUST BE OVERLAPPED 4" OVER THE CENTER BLANKET ALL FINES ANO~OR FEES IMPOSED ON THE OWNER BY 4 i` ~~s~. _ ~ _ ~ 0® ~ ~ 1
07 shall include but not be limited to the following: AND STAPLED (2" FOR C.TSD MATTING>. MMENDED NCDENR DUE TO IMPROPER CHANNEL STABILIZATION to be seeded and stabilized T !N HIGH FCOW CHANNEL APPLICATIONS, A STAPLE CHECK SLOT IS RECD w 1. All denuded areas are T so To ¢o FooIINTERVALS USE A ROW OF STAPLES 4" APART OVER SNARE PRACTICES SHALL BECOME THE RESPONSIBILITY OF THE ~ ~ , ___r ;
within 15 days of completion of any phase of grading, WIDTH OF 1HE CHANNEL. PLACE A SECOND ROW 4" BELOW THE FIRST ROW IN A CONTRACTOR, ALL ADDITIONAL COST ASSOCIATED WITH THE ~ p c ~
favorable for seedin or other PATTERN. D Should conditions exist un 9 STAGGERED REPAIR OF IMPROPERLY INSTALLED STABILIZATION MEASURES I ~ pan vic~;aai~ t Figure 55a Rock i e inle~ rotecGan d cross-se~,ian ..w SHEET N0,
i In+An~tprt nrnund cover. mulch and tack application as 8, 1HE TERMINAL fN0 OF 1HE BLANKETS MUST BE ANCHORED JN A 6" DEED X 6" NTDE cunt I a~ Tug R~-cpnnlcian ITV nF TNF CONTRACTOR. AT THE
TRENCH BACKF/LL AND COMPACT THE TRENCH Af ltK SIAPUNU: jUN 1 5 2009
w specified below will be required. DISCRETION OF THE OWNER AND ENGINEER.
2. All erosion control improvements shall be maintained, repaired and i kept working until acceptance of project. 304 TEMPORARY PIPE INLET PROTECTION 17
NORTH AMERICAN GREEN a
TEMPORARY DITCH LINING CHANNEL RESTORATION DETAIL W N. T. S.
4 INSTALLATION GUIDE
Z N. TS. N.T.S. z OF 17 TY-27
Q
0

w bl
P TEO /\i COMPACTED I\ COM AC BACKFILL BACKFILL COMPACTED z BACKFILL ~ ~ v ~
COMPACTED ~ ~J ~ e.;~~~a ~ RECESSED BRASS PLUG ~ -
BACKFILL j\ r
, HAND TAMPED ~ HAND TAMPED o 1AND TAMPED o ~ CAP C) ~~',~.i
y\\ HAND TAMPED y\\ ,I D: 0.
„ SAW-CUT EX. i\\~ /\1
1,5 OVERLAY (NOTE 1) PAVEMENT PHALT NOTE 2 SAW=CUT EX / ,
ASPHALT (NOTE 2) , ~ PAVEMENT / , ~ ~vrn A 7 L.
z 0 0 o o c N0, 5 OR 57 N0. 5 OR 57 z gCH ~ 4 APE I > y p.n
0 0°0 000° o°a°o 0 0°~ o°o°o° °b°o°o°o°o°a°c°o°ooooQOOOOO o0000o w ooooa 00000 00oooooaooooo000000o CRUSHED STONE a CRUSHED STONE 0000000000 aoooaooooo~ 000000000000000000000000 0o c a D' ~ m
~ 45' ~P~\~~ ~4UNDER S~ ~~D PLUG I'
0 0 0 0 o Q P 0 0 0 0 a 0 0 0 0 01 6" ABC N 0 0 0 0 0 0 0 0 0 0 0 0 0 o a o 6 ~ 0000000000000°00000000000oooooa "CLASS D„ BEDDING CONDITION » )NE ENCASEMENT"' ~ pS R~QUI
1 0 CLASS 8" BEDDING CONDITION "STONE ENCASEMEN 5 BINDER, I 9 B ORM GRAD ~MUM1 4° COMBINATION SEAL
COMPACTED " 6" 625.08 BEDDING FOR D,I, PIPE D-12 FEET BEDDING FOR PIPE PIPE 0-12 FEET BEDDING FOR PIPE PIPE OVER 12 BACKFILL AND FOR D.I. PIPE 12-20 FEET DEEP ANO FOR D.I. PIPE OVER 2O F PIPE PIPE OVER 12 FEET DEEP, UN,~ ~2% ~,~N WITH MANUFACTURED ~
BASE MIX PIPE OVER 20 FEET DEEP. PLUG
NOMINAL '
12 12 NOMINAL . ' ~ ~ 4 BEND
COMPACTED ~ ( w T ICE FOR SEWER PIPE. 4" WYE CONNECTION ~
12 DIA` 12 , NOTE; NORMAL PIPE BEDDING AS SHOWN IN THESE DETAILS SHALL BE INCLUDED IN THE LINEAR FOOTAGE PR CE FOR SE ER BACKFILL 1. ALL 4" SERVICE LINES SHALL REPLACED ON MINIMUM
SEWER MAIN GRADE OF 2% UNLESS OTHERWISE APP.R.OVED.
I TA PIPE BEDD NG DE !L 2. WYE CONNECTIONS, TO BE-USED AS STANDARD. SADDLES
N.T.S. TO BE USED ONLY. WITH ENGINEER'S APPROVAL.
3. WHERE 4" SEWER SERVICE PIPING MUST BE INSTALLED Q ~ _ ~ ACROSS A ROADWAY, CONTRACT 14R SHALL INSTALL 4" ~ ~ ~ p
"ROADWAY" »DRIVEWAYS" D.I. SEWER SERVICE PIPING UNDER THE ROADWAY BY tN ~ ~ U
BORE & JACK METHOD (NO ENCASEMENT PIPE REQ'D}. z U.. ~ `O U
D S E REPAIR AIL PAUE1~1 N S AND RD Q, aZ~°°? J Da ~ .t
N.T.S, tij BAFFLE (TYP.)
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1, OVERLAY SHALL BE S9.5A. OVERLAY LENGTH SHALL BE EQUAL ~~o~ SEtNER SERVICE CONNECTION
TO PAVEMENT WIDTH FOR PERPENDICULAR CROSSINGS, OR AS EARTH BERM N.T.S. _ ~ ~ ~ ~
SHOWN ON THE PLANS, INSTALL OVERLAY ONLY WERE NOTED ON ~
THE PLANS.
2, 21A STONE SHALL BE MAINTAINED LEVEL. WITH ROADWAY UNTIL
ASPHALT IS PLACED. ASPHALT SHALL BE S9.5A, THICKNESS s• . ,
( } EQUAL TO 1.5*EXISTING PAVEMENT THICKNESS 2» MiN, . ~
3, BINDER SHALL BE TYPE 119,OB i. ~ ~ h~a
"HOG WIRE ATTACHED TO POSTS WITH j 4
4. STONE BACKFILL SHALL BE COMPACTED TO 95~ AND PLACED IN LENGTHS DF WIRE HORIZONTAL METAL POST 357 OF SURFACE Oa ~ ~ ' ~ ' AREA ~o ~ ~
6-12" LIFTS. WIRED SECURELY TO VERTICAL POSTS e ~ 1p/~ , ~ ' , '
5, ALL PREPARATION, MATERIALS & METHODS SHALL 8E IN NOTES: ~~'l7~? V ~ as M1n {t r~wn~5~ j FIRST CHAMBER rhJ CRe II
ACCORDANCE WITH NCDOT STANDARDS AND SPECIFICATIONS, „ 25% OF SURFACE AREA ~ ~~,i ` ~n s,
LATEST REVISION. 1. DRIVE 5' STEEL POST AT LEAST 24 INTO SOLID GROUND. 2, USE STAPLES t' APART HORI20NTALLY AND VERTICALLY TO ATTACH i' ~ ~ ~ s~
THE FABRIC TO THE HOG WIRE. CLASS #1 RIP RAP ~ 3. SPACE THE BAFFLES ACCORDING TO THE APPROVED PLAN, 25. SECOND CHAMBER ~ a> o`~'q~,~ ~ ~ h~ . ~,o~, 257 OF SURFACE AREA n" i,n8.~ ~ ~
4. THE FLOOR OF THE BASIN IN THE OUTLET ZONE AND BERMS SHOULD BE SEEDED AND MULCHED IMMEDIATELY AFTER THE BASIN OUTLET Z0 ;s;' aQ~ tip' OUTLET ZONE 6° min off'' a~.
IS CONSTRUCTED, 157 OF SURI 157 OF SURFACE ARE depth ,~~o
BAFFLE INSTALLATION -STEP 1 Coarse aggregate ~
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PERSPECTIVE VIEW v w ~ Q
I- ua o Lv TEMPORARY CONSTRUCTION ENTRANCE ° z z
N.T,S. "
`o ~ cn Q w Q ~ Washing - If conditions at the site are such that most of the mud and sediment ~ a o ~ o ~ u~i ~
RING AND COVER SHALL BE USF FENCE A FENCE AND FABRIC are not removed by vehicles traveling over the gravel, the tires should be
- L OR APPROVED UA euRIED u 669 K EQ L BURIED IN TRENCH washed. Washing should be done on an area stabilized with crushed stone that ~
W/ STANDARD LETTERING - drains into a sediment trop or other suitable disposal area. A wash rack may also
W TOP OF BAFFLE SHOULD SANITARY SE ER BE 6" BELOW THE TOP OF 6"x6" TREE be used to make washing more convenient and effective.
THE-BERM BACKFILLEC 6"x6" TRENCH, BACKFILLED AND ~ Canstructlon z
N a CUT 6" SLITS IN THE FENCE CLEAN OUT WHEN SEDIMENT REACHES THIS GOMPACTEI FABRIC ALONG THE BOTTOM LEVEL COMPACTED ' O SpeCifiCatiOns 1. Clear the entrance and exit area of all vegetation, roots, and other objea- 1=
WIRE IN EVERY OTHER SQUARE OF THE HOG WIRE ® tionable moteridl and properly grade it.
, - PRE-CAST GRADE RING, AS v
REQUIRED, MAX. OF 19 2. Place the gravei to the specific grade and dimensions shown on the plans, and w smooth it. °
" ° BAFFLE INSTALLATION -STEP 2
a 3. Provide drainage to carry water to a sedment trap or other suitable outlet.
® ~ a - - d
- - BAFFLED TEMPORAR ~ P OR AR Y SEDIMENT TRAP 4. Use geotextile fabrics because they improve stability of the foundation in ~ locations subject to seepage or high water table. q
N.T.t N.T.S. °
. Maintenance Maintain the gravel pad in a condition to prevent mud or sediment from leav- >
' STEPS TO BE 16" O.C, ing the construction site. This may requuire periodic topdressing with 2-inch ~ -
7. ENSURE THAT THE STONE DRAINAGE SECTION OF THE E LOCATED ON DOWNSTREAM ( } ;TION OF THE EMBANKMENT HAS A stone. After each rainfall, inspect any structure used to trap sediment and clean
1. CLEAR, GRUB, AND STRIP THE AREA UNDER THE EMBANKMENT OF ALL MINIMUM BOTTOM WIDTH OF 3 FEET AND MAXIMUM SIDE ~ ° SIDE OF MANHOLE VEGETATION AND ROOT MAT, REMOVE ALL SURFACE SOIL CONTAINING HIGH EXTEND TO THE 80TTOM OF THE SPILLWAY SECTION, dAXIMUM SIDE SLOPES OF 1:1 THAT it out as necessary. Immediately remove all objectionable materials spilled, Y SECTION, washed, or tracked onto public roadways.
° AMOUNTS OF ORGANIC MATTER AND STOCKPILE OR DISPOSE OF IT PROPERLY,
HAUL ALL OBJECTIONABLE MATERIAL TO THE DESIGNATED DISPOSAL AREA. 8. CONSTRUCT THE MINIMUM FINISHED STONE SPILLWAY BOT' SPILLWAY BOTTOM WIDTH, AS SHOWN
. ON THE PLANS, WITH 2:1 SIDE SLOPES EXTENDING TO TH 2, ENSURE THAT FILL MATERIAL FOR'THE EMBANKMENT IS FREE OF ROOTS, WOODY FILLED EMBANKMENT. KEEP THE THICKNESS OF THE SIDE ;TENDING TO THE TOP OF THE OVER SS OF THE SIDES OF THE SPILLWAY
° ° ' VEGETATION, ORGANIC MATTER, AND OTHER 08JECTIONABLE MATERIAL, PLACE OUTLET STRUCTURE AT A MINIMUM OF 21 INCHES. THE I INCHES. THE WEIR MUST BE LEVEL AND
THE FILL (N LIFTS NOT TO EXCEED 9 INCHES AND MACHINE COMPACT IT. OVER CONSTRUCTED TO GRADE TO ASSURE DESIGN CAPACITY. FILL THE EMBANKMENT 6 INCHES TO ALLOW FOR SETTLEMENT. IGN CAPACITY. VARIES
9, MATERIAL USED IN THE STONE SECTION SHOULD BE A WE iOULD BE AWELL-GRADED MIXTURE OF
„ 3. CONSTRUCT THE OUTLET SECTION iN THE EMBANKMENT. PROTECT THE STONE WITH A D50 SIZE OF 9 INCHES (CLASS B EROSIOn 4 -0 ~ CONNECTION BETWEEN THE RIP-RAP AND THE SOIL FROM PIPING BY USING FILTER C M N IM T N i F 4 IN H .ASS B EROSION CONTROL STONE IS
RE 0 ME DED} -AND A MAX UM S 0 E S ZE 0 1 G TO 6 - 0~ FABREC OR A KEYWAY CUTOFF TRENCH BETWEEN THE RIP-RAP STRUCTURE AND MACHINE PLACED AND THE SMALLER STONES WORKED INl ZE OF 14 INCHES. THE STONE MAY BE 0~ 0 IES WORKED INTO THE VOIDS OF THE 0r EXIST. CHANNEL SLOPE ~ ' ~ ,
° THE SOIL. ° LARGER STONES. THE STONE SHOULD 8E HARD, ANGULA • PLACE THE FILTER FABRIC BETWEEN THE RIP-RAP AND SOIL. EXTEND THE WEATHER-RESISTANT. HARD, ANGULAR, AND HIGHLY vV l
FABRIC ACROSS THE SPILLWAY FOUNDATION AND SIDES TO THE TOP OF THE
a ° DAM; OR 10. ENSURE THAT THE STONE SPILLWAY OUTLET SECTION EXT ~ L EXIST, CREEK WIDTH .T SECTION EXTENDS DOWNSTREAM ~ ~ ~ 00~ ~
~ a EXCAVATE A KEYWAY TRENCH ALONG THE CENTERLINE OF THE SPILLWAY PAST THE, TOE QF THE EMBANKMENT UNTIL STABLE FOUNDATION EXTENDING UP THE SIDES TO THE HEIGHT OF THE DAM. THE REACHED ANO OUTLET VELOCITY IS ACCEPTABLE FOR THE C STABLE CONDITIONS ARE
° TRENCH SHOULD BE AT LEAST 2 FEET DEEP AND 2 FEET WIDE WITH i:1 SIDE 'TABLE FOR THE RECEIVING STREAM, ~0 O~ 0 ~(~~0 a~~ SEC110N FLUSH WITH THE SURROUNDING ~ 0 0 0 I~
I SLOPES. KEEP THE EDGES OF THE STONE OUTLET SECTION FLUSH 8 GROUND AND SHAPE THE CENTER TO CONFINE THE OUTFI 'FINE THE OUTFLOW STREAM. B~~
°o ~ 4. CLEAR"THE POND AREA BELOW THE ELEVATION OF THE CREST OF THE SPILLWAY it. DIRECT EMERGENCY BYPASS TO NATURAL STABLE AREAS STABLE AREAS. LOCATE BYPASS FILTER FABRIC
4 TO FACILITATE SEDIMENT CLEANOUT. OUTLETS SO THAT FLOW WILL NOT DAMAGE THE EMBANKI, E THE EMBANKMENT.
° a 5, ALL CUT AND FILL SLOPES SHOULD BE 2:1 OR FLATTER, 12. STABILIZE THE EMBANKMENT ANO ALL DISTURBED AREAS EXIST. CREEK TUBBED AREAS ABOVE THE SEDIMENT BOTTOM SURFACE RIP-RAP LINING,
e ° POOL AND DOWNSTREAM FROM THE TRAP IMMEDIATELY AI IMMEDIATELY AFTER CONSTRUCTION,
° 6. MINIMUM DEPTH TO BE 3.5 FEET (1.5 FEET BELOW GRADE AND 2 FEET MINIMUM STORAGE A80VE GRADE). STONE SIZE VARIES
hJ- d ° ° ~
O v a , ° MH TOP I ° DESIGN
~ SETTLED TOP pl" MIN OVERffLL 6° FOR
v o' / ~ ~.,,----BUTYL RUBBER serrLEMENr PER DWQ REGULATIONS, PLACEMENT OF CHANNEL
0 ~ / j /i 00 4 FT MIN ,~,rr.~~~~`~~o,;, , STABILIZATION STONE SHALL BE LIMITED TO THE BOTTOM
U ,r..i r..r 18 ~~o t I Q MH BASE ,~o a FT r~iN ,orrp;l sioE AND BANKS OF CHANNEL WHICH ARE DIRECTLY kMPACTED 8Y pp L1> ~ r`~rr EMERGENCY 6Y-PASS 6t~
~oUOUoUo o ~ 5 FT `~i~~i ~o po po po po i/i SvooU~o ao0nr s SLOPE Max BELOw sErrLEO THE SEWER LINE INSTALLATION, RIP-RAP SHALL NOT BE ~
a JOINT DETAIL MAX FILL 2~ ro 3.5' ~`,~aooaopaopa,,~ L ~~oaop roP of pAM PLACED IN AREAS THAT WERE NOT DISTURBED, AND SHALL ~J~Q~ rir~ NATURAL ONLY BE INSTALLED BELOW THE NORMAL HIGH WATER LEVEL. ~
° ~ d MAINTENANCE FINER I:I ~ a 36" MIN I:I SIDE SLOPE GROUND RiP-RAP SHALL ONLY BE INSTALLED BELOW THE EXISTING ~
Q FABRIC N' 36" Mw MAX GRADE OF THE CHANNEL, SUNK INTO THE GROUND, SUCH
¢ INSPECT TEMPORARY SEDIMENT TRAPS AFTER EACH PERIOD OF w ° d SIGNIFICANT RAINFALL. REMOVE SEDIMENT AND RESTORE THE CROSS-SECTION THAT ORIGINAL GRADES AND CONTOURS ARE NOT MODIFIED.
TRAP TO ITS ORIGINAL D{MENSIONS WHEN THE SEDIMENT HAS ~-SECTION RIP-RAP SHALL NOT BE PLACED ON TOP OF THE SURFACE
i~i ° ACCUMULATED TO ONE-HALF THE DESIGN DEPTH OF THE TRAP. OF THE GROUND UNDER ANY CIRCUMSTANCES.
rn PLACE THE SEDIMENT THAT IS REMOVED IN THE DESIGNATED DISPOSAL AREA AND REPLACE THE CONTAMINATED PART OF THE ALL FINES AND~OR FEES IMPOSED ON THE OWNER BY ~ ~
j ° GRAVEL FACING. a ° . NCDENR DUE TO IMPROPER CHANNEL STABILIZATION ~
~ ° . d , ' ° a CHECK THE STRUCTURE FOR DAMAGE FROM EROSION OR PIPING. 12" NCDOT 5 Fl PRACTICES SHALL BECOME THE RESPONSIBILITY OF THE
PERIODICALLY CHECK THE DEPTH OF THE SPILLWAY TO ENSURE IT ;DOT 5 FT MIN ~A~AS ~I CONTRACTOR. ALL ADDITIONAL COST ASSOCIATED WITH THE
IS A MINIA~I IM !1F 1 fi FFFT aFl C3W THE I (1W PtIINT (1F THE A ~ #57 WASHER SHER J~~ I REPAIR t1F IMPR(1PFRI Y INCTAI I F't1 cTtlRil I7oTInNi 1dF4CI IRRC
EMBANKMENT. IMMEDIATELY FILL ANY SETTLEMENT OF THE STONE OO~C v m..wvn.v TONE ~O0QO -{-1.5 FT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR, AT THE SHEET NO.
EMBANKMENT TO SLIGHTLY ABOVE DESIGN GRADE. ANY RIP-RAP ~00~( ~ 3604 CU FT/ACRE o a0o00o0000000 / U c DISCRETION OF THE OWNER AND ENGINEER.
DISPLACED FROM THE SPILLWAY MUST BE REPLACED IMMEDIATELY. O O C PRECAST CONCRETE MANHOLE ~ r 000, 000000o000 , oo00 0 Lo 7:
° N.T.S. AFTER ALL SEDIMENT-PRODUCING AREAS HAVE BEEN O~O~O0( 0( X060°0'60°0°000o060o 1
PERMANENTLY STABILIZED, REMOVE THE STRUCTURE AND ALL ~o of o ~o oo 0000000+ UNSTABLE SEDIMENT. SMOOTH THE AREA TO BLEND WITH THE Of o0 o~o~0(o~o~r CHANNEL. RESTORATION DETAIL
ADJOINING AREAS AND STABILIZE PROPERLY. FILTER FABRIC
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CROSS-SECTI01 SS-SECTION N.T.S. ----l OF 13 Ty-22
0