20240314 Ver 1_Discovery Lake Permit Set 9-26-23_20240424

NO PHOTOGRAPHS OR VIDEO OF Sheet List Table
REPAIR NIH DAM GOVERNMENT STAFF IS PERMITTED.
Sheet Number Sheet Title AAT
C1.0 COVER SHEET
A.MORT
Ci2.0 SITE SURVEY-EXISTING CONDITIONS
COG ENGINEERS
SSS CONSULTING
AND ASSOCIATES,INC.
100 GATEWAY CENTRE PARKWAY,SUITE 200
C3.0 PROPOSED SITE PLANS PHONE
2723235
PHONE[phone]
INLETS AND OUTLETS C3.1 SITE ACCESS, STAGING AND AERATION PLAN EMAIL:DRISSMEYER@AMTENGINEERING COM
C4.0 SECTIONS AND DETAILS
a
E''tL'y C4.1 ADDITIONAL SECTIONS AND DETAILS
OL PLAN
TASK ORDER C 100809 ���"� a �d a qp 17�%
C5.1 EROSION AND SEDIMENT CONTROL OTRES AND DETAILS C 4ri
MIC
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DAM INVENTORY # DU RHA- 105 a ers
0�`dee DURHAM COUNTY GENERAL EROSION AND SEDIMENT CONTROL NOTES
h 5
1. IF MORE THAN 12,000 SQ. FT. IS DISTURBED A LAND-DISTURBING PERMIT WILL BE
° REQUIRED PRIOR TO THE COMMENCEMENT OF ANY LAND-DISTURBING ACTIVITIES.
akevie
oa 2. IF MORE THAN 20,000 SQ. FT. IS DISTURBED A SEDIMENTATION AND EROSION
i
Project Site CONTROL PLAN MUST BE SUBMITTED AND APPROVED PRIOR TO THE ISSUANCE OF A
FEDERAL NID # NCO1666
,3P LAND-DISTURBANCE PERMIT.
Discovery Lake „r�����•,,,
3. TREE PROTECTION IS REQUIRED BY THE CITY/COUNTY PLANNING DEPARTMENT,TREE
PROTECTION CERTIFICATION MUST BE SUBMITTED TO THE DURHAM COUNTY
2P EROSION CONTROL DIVISION,AND TREE PROTECTION INSPECTION COMPLETED PRIOR sJ
D i or o" TO LAND-DISTURBANCE PERMIT ISSUANCE. !� ??`�:¢ 5EAL 7
U R H A M COUNTY, NC 4. IF AN OFFSITE SPOIL OR BORROW SITE IS UTILIZED,THE DISTURBED AREA MUST BE
H°p5O"Rd INCLUDED IN THE LAND DISTURBANCE PLAN AND PERMIT UNLESS ALREADY 040215
N�c"• G,���
- PREPARED FOR - PERMITTED.
5. GO �IF THE DISTURBED AREA EXCEEDS FIVE ACRES,AN IMPROVEMENT SECURITY WILL BE , '. \
REQUIRED PRIOR TO LAND-DISTURBING PERMIT ISSUANCE. s ���
National Institutes of Health Vicinity Map y
e 2" 40W Durham County
III TW Alexander Drive ft PersonCounty
Durham, NC 27709 Hampton REPAIR NIH DAM
`�, �`.; "_ � INLETS AND OUTLETS
RECOMMENDED SEQUENCE OF CONSTRUCTION TAVENTORYSK ORDER DURH9
DAM INVENTORY#DURHA-105
FEDERAL NID#NCO1666
1. LOCATE OR SET CONTROL POINTS SUCH THAT THEY ARE VISIBLE AND CAN BE 14. ONCE LAKE IS DRAINED PUMP LAKE LEVEL DOWN TO AT LEAST ELEVATION 271.0 24. PRIOR TO THE LAKE REACHING NORMAL POOL DEMOLITION OF THE SLAB m
RE-ESTABLISHED. IN ORDER TO CONSTRUCT A COFFERDAM AROUND LOW LEVEL DRAIN INLET AND AROUND THE OUTLET CONDUITS SHALL BE PERFORMED EXPOSING THE OUTLET 1 DURHAM COUNTY,NC
PRINCIPAL INLET CONDUITS TO FACILITATE SLIP LINING. CONTRACTOR MAY CONDUITS. Granville
2. FLAG CLEARING LIMITS,LOCATE PROPERTY CORNER PINS,RIGHT OF WAY,AND County
UTILITIES TO ENSURE THEY ARE NOT DISTURBED DURING THE COURSE OF THE CONSTRUCT COFFERDAM USING EARTH MATERIAL FROM THE LAKE BOTTOM OR 25. APPROXIMATELY 20 FT OF THE EARTH ADJACENT TO THE OUTLET CONDUITS L9'
PROJECT. BRING IN TEMPORARY MATERIALS THAT SHALL BE REMOVED FROM THE LAKE SHALL BE EXCAVATED.
3. INSTALL THE AERATION SYSTEM PUMP AS SHOWN ON THE SHORELINE,PLACE AREA WHEN NO LONGER NEEDED,I.E.PORT-A-DAM,SUPER SACKS,ETC. 26. REMOVE APPROXIMATELY 20 FT OF THE EXISTING OUTLET CONDUITS.
AIR DISTRIBUTION TUBES IN THE LAKE,AND START THE AERATION OPERATIONS. 15. PROVIDE A 12"LOW FLOW PIPE THROUGH THE COFFERDAM WITH A VALVE TO
CONTROL FLOW AS SHOWN. MAINTAIN THE DRAINED LAKE LEVEL BY ALLOWING 27. REMOVE ANY DEBRIS FROM OUTLET CONDUITS AND FLUSH WITH WATER IF
PERFORM AERATION FOR AT LEAST ONE WEEK PRIOR TO LOWERING POOL. NORMAL DAILY FLOW THROUGH THE 12"PIPE AND DIRECTING INTO THE LOW NECESSARY TO CLEAN THEM OUT.
4. INSTALL SILT FENCE AND PERIMETER CONTROLS AS SHOWN ON PLAN. LEVEL DRAIN. 28. INSPECT THE RISER TOWERS AND DOWNSTREAM CONDUITS AND NOTIFY THE i& PERMIT SET
S. TRAFFIC SHALL BE MAINTAINED ON THE ROAD ACROSS THE TOP OF THE DAM. 16. TAKE ALL NECESSARY PRECAUTIONS FOR CONFINED SPACE ENTRY. REMOVE ALL ENGINEER IF ANY DISCREPANCIES OR UNFORESEEN CONDITIONS ARE FOUND. WINDW 15
Ridge6. INSTALL SAFETY FENCE AND PEDESTRIAN INFORMATION SIGNS. DEBRIS FROM THE PRINCIPAL SPILLWAY TOWERS AND DOWNSTREAM CONDUITS 29. SLIP LINE THE 60"DIA SPILLWAY DOWNSTREAM OUTLET CONDUITS WITH 54"
7. THE LAKE VOLUME WILL NEED TO BE DRAINED TO PERFORM THE REPAIR SINCE AND FLUSH WITH WATER IF NECESSARY TO CLEAN THEM OUT. O.D.HDPE DR-32 PIPE.CENTERING SPACERS SHALL BE USED TO ADEQUATELY
P..r ;
THE 36 INCH LOW LEVEL DRAIN AND THE 60 INCH UPSTREAM INLETS MUST BE 17. SLIP LINE THE(2)60"DIA SPILLWAY UPSTREAM INLET CONDUITS WITH 54"HDPE CENTER THE PIPE. THE OUTLET SLIP LINE SHALL BE INSTALLED FROM ftbOrangeo
ACCESSED AT THE LAKE BOTTOM. BEGIN DRAINING LAKE LEVEL BY OPENING DR-26 PIPE. CENTERING SPACERS SHALL BE USED TO ADEQUATELY CENTER THE DOWNSTREAM END. rncnly
LOW LEVEL DRAIN VALVE. REGULATE THE AMOUNT OF VALVE OPENING TO PIPE. THE INLET SLIP LINE SHALL BE INSTALLED FROM THE UPSTREAM END. 30. INSTALL NON-SHRINK GROUT BULKHEAD AT EACH END OF OUTLET CONDUITS 70 m 75 Gorman
ENSURE THAT THE LAKE LEVEL IS LOWERED NO MORE THAN 1/2 FOOT PER DAY EACH WELD JOINT SHALL BE TRIMMED AND SOLIDLY FUSED TOGETHER WITH ONE VENT PIPE TERMINATING 1 FT ABOVE THE CROWN OF EACH PIPE. 0�x
z UNTIL LAKE IS LOWERED APPROXIMATELY 3-4 FEETTHEN CLOSE VALVE. ACCORDING TO THE MANUFACTURER'S RECOMMENDATION. INSPECTTHEPIPES 31. GROUT ANNULAR SPACE IN OUTLET CONDUITS BETWEEN THE EXISTING AND nR rw
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8. SELECT A DAY WITH A FORECAST OF SEVERAL MORE DAYS WITHOUT RAIN AND AFTER INSTALLATION IS COMPLETE TO ENSURE THERE ARE NO ANOMALIES TO BE NEW PIPE FILLING FROM THE LOWER END TO THE TOWER END. MULTIPLE Le.
j APPLY THE ROTENONE TREATMENT TO THE LAKE IN THE AFTERNOON;THEN CORRECTED. GROUT SUPPLY PIPES WITH VARYING OUTLET LOCATIONS WILL BE NECESSARY NATIONAL INSTITUTES OF HEALTH
= COLLECTANDDISPOSEOFTHEFISHEARLYTHENEXTMORNING. 18. CLOSE VALVE ON 12"LOW FLOW PIPE IN COFFERDAM AND DEWATER WORK TO ENSURE COMPLETE FILLING OF THE ANNULAR SPACE. CLOSELY MONITOR Project Site 70 ""'
Y 111 T.W.ALEXANDER DRIVE
9. TEST ROTENONE LEVELS UNTIL HAS DIMINISHED TO SAFE LEVELS. IF NECESSARY, AREA FOR LOW LEVEL DRAIN SLIP LINING. GROUT PRESSURES TO ENSURE PROTECTION OF THE DAM EMBANKMENT. Durhan Joy d DURHAM,NC 27709
Discovery Lake
Q.
APPLY COUNTERAGENT IF A RAIN EVENT OCCURS AND PRESENTS A RISK OF LAKE 19. SLIP LINE THE 36"DIA LOW LEVEL DRAIN CONDUIT WITH A 30"DIA HDPE DR-26 32. GRADED SAND FILTER MEDIA SHALL BE INSTALLED AT THE END OF THE EXISTING [phone]
v LEVELS REFILLING TO NORMAL BEFORE TESTING VERIFIES THE WATER IS SAFE PIPE WITHOUT ALTERING THE VALVE THAT IS INSIDE THE TOWER. CENTERING CONDUITS AND BACKFILLED BACK TO PREVIOUS LIMITS. °1 Gve
AND THEN CONTINUE DRAINING THE LAKE. SPACERS SHALL BE USED TO ADEQUATELY CENTER THE PIPE. 70 Wake
n 33. A NEW REINFORCED CONCRETE SLAB SHALL BE CAST AROUND THE NEW 54" u Cpmtg
10. WITH LAKE LEVEL DOWN WORK CAN COMMENCE ON CONSTRUCTION OF THE 20. INSTALL NON-SHRINK GROUT BULKHEAD AT EACH END OF THE LOW LEVEL DRAIN OUTLET CONDUITS IN THE SAME LOCATION AS THE ORIGINAL. MARK DATE DESCRIPTION
WAVE PROTECTION ON THE DAM,PIEZOMETERS,REPAIRS ON BRIDGE 6,AND CONDUIT AND AT EACH END OF THE UPSTREAM INLET CONDUITS WITH ONE 34. REINSTALL PREVIOUSLY REMOVED OR PROVIDE NEW DEBRIS GRATES ON THE 1 esda
THE SHORELINE FORTIFICATIONS AROUND THE PERIMETER OF THE LAKE VENT PIPE TERMINATING 1 FT ABOVE THE CROWN OF EACH PIPE. END OF THE NEW 54"OUTLET CONDUITS. 47
ACCORDING TO THE DETAILS AND LOCATIONS SHOWN IN THE PLANS.0 70 21. GROUT ANNULAR SPACE IN LOW LEVEL DRAIN CONDUIT AND THE UPSTREAM 35. ONCE ALL OF THE SHORELINE FORTIFICATIONS,RIP RAP ARMOR,AND BRIDGE 6
11. ONCE LAKE IS DRAINED,TAKE ALL NECESSARY PRECAUTIONS FOR CONFINED INLET CONDUITS IN SUCH A MANOR TO NOT OVERWHELM BULKHEADS UNTIL REPAIRS HAVE BEEN COMPLETED, THE LAKE LEVEL SHALL BE ALLOWED TO
o SPACE ENTRY. REMOVE ALL DEBRIS FROM THE PRINCIPAL SPILLWAY TOWERS GROUT HAS CURED. DUE TO THE SLOPE OF THE UPSTREAM INLET CONDUIT THE RETURN TO NORMAL POOL ELEVATION. 70
AND UPSTREAM CONDUITS AND FLUSH WITH WATER IF NECESSARY TO CLEAN GROUT MAY NEED TO BE DONE IN STAGES. 36. ANY DAMAGE TO THE EXISTING ROADWAY AND PEDESTRIAN PATH SHALL BE
22. ONCE THE LOW LEVEL DRAIN CONDUIT SLIP LINE GROUT HAS CURED THE
THEM OUT. REPAIRED TO ORIGINAL DESIGN AND SPECIFICATION PRIOR TO VACATING THE
n
12. INSPECT THE RISER TOWERS AND UPSTREAM CONDUITS AND NOTIFY THE COFFERDAM AND/OR PUMP CAN BE REMOVED. MOVE EQUIPMENT OUT OF SITE. The Downs Blands
ENGINEER IF ANY DISCREPANCIES OR UNFORESEEN CONDITIONS ARE FOUND. LAKE AREA AND RESTORE ANY DAMAGE TO THE SHORELINE ACCESS LOCATION. ur
37. CLEAN UP AND DEMOBILIZE. Genlee
°a 13. REMOVE THE DEBRIS GRATES ON THE OUTLET END OF THE PRINCIPAL SPILLWAY 23. ONCE COFFERDAM HAS BEEN REMOVED AND WITH APPROVAL OF ENGINEER,
O CONDUIT BY SAW CUTTING OR TORCHING. CLOSE LOW LEVEL DRAIN VALVE AND ALLOW LAKE TO REFILL. CONTRACTOR ath mCounryc as
SHALL MONITOR LAKE LEVEL WITH REGARDS TO THE SHORELINE
o FORTIFICATIONS. IT IS EXPECTED THAT THE FORTIFICATIONS CAN BE COMPLETED
m PRIOR TO RESTORATION OF NORMAL POOL. IF NOT,THE LAKE LEVEL SHALL BE
z MAINTAINED AT 4 FT BELOW NORMAL POOL UNTIL THE SHORELINE
U FORTIFICATIONS ARE COMPLETE.
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PROJECT NO: 22-0363.001
SCALE: AS SHOWN
DESIGNED BY: DAK
Raw
DRAWN BY: KHH
F
CHECKED BY: DJR
rn SHEET TITLE
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° COVER SHEET
DURHAM COUNTY
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j( SHEET 1 OF 8

/ITOP WALL CONC POOL TOP WALL
MI-40 �270.78 CONC WALL 268.66'
60"CMP
60"CMP
86.90 £
PA CONC
PARTITION WALL 4"CPP INV TOP WALL
US'LEVEL INV= EXPOSED PIPE 270A 3'
0.5'CHAMFER D 272.12 267.20'
AAT
290.87' nz.zs
FLOOR& TOP WALL ErvoC£ SITE CONTROL-REPAIR AND CAP NC GRID IN D83-2011 A.MORTON THOMAS AND ASSOCIATES,INC.
INV=268.20' 270.13' SECTON1 NAVD88-GEIODI8 CONSULTING ENGINEERS
1.0'CONC INV= ROOF CONC WALL 267.16'
WALLS FLOOR FLOOR ELEV= 6 09 COURT LOCALIZED ABOUT CONTROL POINT CP RICHMOND,VA 23235
I TOP WALL CFG 0.99992458 ( )N2
267.77' - 272.89' TYP. 268.66'
ELEV=267.80' ELEV=267.77' 60"CMP 296.83 TOP WALL 2 PHONE[phone]
N 1 270.82' INV 6"VCP CP NORTHING FASTING ELEVATION
WATER LEVEL w E�EV= I tO 7 02' INV INV EMAIL:[e-mail]
CHAMBER AT 296.89' 1 - EXPOSED PIPE 266.95' IV
1 777507.2329' 2037146.9797' 294.59'
7 00' 2T1.93' DOWNSTREAM=266.98'
SITE 283.5'ON 1.0'CONC INV=284.02'
272.t9 2 777290.9834' 2036413.2575' 294.02'
10/01/20 505' WALLS ■ z66.6a'
INV=283.95' 3 777444.5461' 2035759.2804' 314.11'
60"CMP CONIC WALL CONC SILL WEIR TOP WALL 'Ec
TOP WALLf 270.0$ 4 776862.9597' 2035535.7808' 325.07'
36" 60"CMP 270.67 UPSTREAM=268.49' TOP WALL
CALCULATED FROM CMp ■ INSET #2 DOWNSTREAM=268.45' 268.70'
PLANS-INV=273.0' . SCALE 1" =4'
VICINITY MAP NOT TO SCALE IN5ET #3
SCALE 1" =8'
\ -- INLET WEIR=293.03'
GRATE=284.91'
INSET #1 \ / / / // / �' DI INV=2a4.4z'O
SCALE 1" =4' (7� INV=284.34'OUT
RIM=274.70' 1 t 14IINV'�82.33'IN
DROP INLET
ti INV=zs7.a3'&zs0.3z' DI
,-�- I CRATE=zsssl'
\\\ )\ / J - -\I / RIP/RA�\
�./' q / \� INV=286.68'IN
INV CB 4.92'OUT
GRATE=292.00'
NCS/R
SEAL � =
040215
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SIGNAL I- Cpl
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_\ INLET WEIR-292.70' r•t �d� \ 4L
\\\\ \\ \ \ \ \gs \\ -z7o- --- wv=266.as' \ \�
$-�_--__ SIVE-
SOLAR LT J EDE
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293.)1' O
l zs° AT­_
% REPAIR NIH DAM
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_ - '- - _ - gNg " FP INLETS AND OUTLETS
z6o - -- _ 7 �r1, i 295/ '-- _ 5: /
�- =__- --_--_- a- -- zas�ON�TFAtiL�_ _�2- _ �F --- _ _ \ \ \
\\ 30 \ \ \ \ _\\\\==\�� -0ReP-1NLFL -&s - _- _ - i _gp��zZ6:es:0uYT /// / = ---- - \ \ \� -
/- _ _ / �.293.6' °f�ofo� �jj �,\ TASK ORDER C100809
o \ �2g5� 290_ \=11JEZZ71'&2fiS79= �' =S 28 _----- -7KI _ _,��'&A1f /CONTROL s'2g5-_-_---- w \ \ \
\ \ \ _ _ _ \ - � __-__zas - _ ems _ - ��= , PA EL -oPnc uT / \ p \\ \\\ DAM INVENTORY#DURHA 105
- "GONG / b` ` _ _/�
NO VEHICULAR TRAFFIC OR HEAVY
WALL -' ?S - -295'
W1TH� _ _ -_-- -- _ ss \\ ° ° FEDERAL NID#NC01666
EQUIPMENT IS PERMITTED ON FIRE LANE - ?g5 \-� - - - --- - _-z9o- -- _ _ ss„ UT 29s- Pv \ oB �s \ \ \
3f0 �VAU6T - CT--_ _--- _--_-_ - _ SS--� / i' SPN / / 2y �' \`9\ o� \ \\
ACCESS DRIVE ADJACENT TO MRI BUILDING LI°=2a�6:�b==-- _--=_- _ �f$-b - z9s- SL_61,-- SS %� E� Ze5 / P �' / -\s\ \ ds\ 'f' v \\ DURHAM COUNTY,NC
\ ----- _ _ - _ - ---SLR DRAIN / S \ \2
UE
___WTH LID --- _-- --7 ii� J SS \
\ _ TRAFFICS�'
- ` -- \�_----\\ ---------S'EE-INSEf1-i. �' LIGriTj / �D 295 /�ZDB SS /// \ \\zsss' \\\\\\ SC 2g FA\
/ _ 5- UTg '/ WALK i` SS-� SS 15��RCP
0°1 Jl0 __ ------- --- -----CONC PAD----- LIGHT_TR _r- -- �- - USBB EP HALT SIDE / 26sSt--�-�s�i
/j RV AD WITH RAISABLE METAL _ - \ / \\ \ \ S S RIM=295.50'
- _-- - --0 95 \ =278.35 0U
A�,6 / Y / _\ ----_---BAWWI� €3----- -Q USDD - -� INV T
_i'�ROPAIyE CONC / / gs- HH _� _--- METAL ---_- INV=276.85' \ -
TANKS��pAD l // EP MEAL N INV_276.77'0UT IIII \\ \\\� -Q.�\ PERMIT SET
--'\\ /~o�vP3 -_ -emu B LAKEVIEW DRIVE _ - -\_- -_2so\
`�-�/ UTDB 295.59' 295.59' 295.43' UTnB _ _ i _ -- 290--- \
j ASP EP PH
HALT SID -
----_ _ 3 N�•gj.�••w - E K U T UTD _-4
---� o//L2s5- 67L1E -295 _ - r� �'�� --
L_--------------o- TRgFF -�- _- ��� �% '�i---'
/\ / /iN1r<Z/WOU .1 ------ ---o _ �_ - �3 _- ----/2so_ \ \ \\ \ \\ -//
Fi CP4 \ 739
PAgc p \/�/N i%, 290 - ��90_� _ - \\ \ \ m \ \4\ \ / -
RIP/RAP
o)ss _ _- -- --- - -\- - ;2g0 -_---- ___-; \\ \ \\\\\\ \ \ / NATIONAL INSTITUTES OF HEALTH
-.----- \ \ \ `zs \- /
----- D_ -�� / / 111 T.W.ALEXANDER DRIVE
_ _ ____ DURHAM,INC 27709
280- [phone]
v RIM=291.51' Cp I� I I I I I / i' / / ice,- _ --�1U - -\-
N INv=284.01' I I / / / -280- \/ -o -- / \ / / - I \ \ \ \ \ \ �s 6, -
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MARK DATE DESCRIPTION
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o� - -z7s� `-i----/
fin`------- / <r � \ � 85 __------
° a� j1�IIII jB4prl l / / --------- ° - / 271x6' I vI
.2�,.5
.2i0.r 2eO
\ -
G MR1 BUILDING I I // I 1 A I /
y I DISCOVERY LAKE v A v v v 2n.a / ----- --__ - �215, v--
z -27s- A \
l� _ -275 v
// IIII h II� I I / / � I I / / � --/ /� / / , I v A
m RIM=295. IIII // I
INV=2 ,19'CUT �111I AV A / ti�°� / \ \
- PROJECT NO: AS SHOWN
.269.>/ 363.001
SCALE: AS SHOWN
�.269.5' DESIGNED BY: DAK
> DI INv=286.74' I A A I / / / / / 1 --- � --� ) _ DRAWN BY: KHH
Of NV-285.4V' / 1 --- --� ` CERTIFICATE of GLOBAL POSITIONING SYSTEMS URVEYS I CHECKED BY: DJR
W GRATE=293.92' 18 RCP r \ \ \ I / / / / /
p - \_ I / I NOTES: I,CLINTON B.OSBORNE,CERTIFY THAT THIS PLAT WAS DRAWN UNDER MY SUPERVISION FROM AN SHEET TITLE
U / ACTUAL SURVEY MADE UNDER MY SUPERVISION;THAT THE RATIO OF PRECISION AS CALCULATED IS
w 1. RAW ERROR OF CLOSURE 1:10,000+,MISCLOSURE WAS 1.10,000L,THAT THE SITE CONTROL SHOWN HEREON WAS ESTABLISHED UNDER MY SUPERVISION FROM
C] DISTRIBUTED BY COMPASS RULE. AN ACTUAL GPS SURVEY MADE UNDER MY SUPERVISION AND THE FOLLOWING INFORMATION WAS USED
TO PERFORM THE GPS SURVEY:1)CLASS OF SURVEY OL 5A 5 A;2)POSITIONAL ACCURACY DOES NOTE
SCALE L� 2. DISTANCES SHOWN ARE HORIZONTAL GROUND DISTANCES EXCEED O10';3)TYPE OF GPS FIELD PROCEDURE STATIC AND RTK 4)DATE OF SURVEY
GRAPHIC SCALE UNLESS NOTED OTHERWISE. ONTROL
7)GEIOD/MODEL GED)DJ&DCOMBNED GRID FACTOR 0ATUM/EPOCH BAD 1199�692 PUBLISHED/FIXED.9))UNTS USC SURVEY FOOTGAND S SITE SURVEY- EXISTING
REFERENCES: THAT THIS MAP WAS PREPARED IN ACCORDANCE WITH THE STANDARDS AND PRACTICE FOR LAN
SURVEYING AS OUTLINED BY THE NC ADMINISTRATION CODE TITLE 21,CHAPTER 56.1607, A I
1, SITE DEVELOPMENT PLANS PROVIDE BY HER,DATED 1977,AND CONDITIONS
O A I I VD I T I O I V S
STAMPED'TURNER RECORD DRAWINGS REVISED 7/12/83, WITNESS MY HAND AND OFFICIAL SEAL THIS 13TH DAY OF OCTOBER 2020.
DRAWINGS REFLECT AS-BUILT CONDITIONS".
( IN FEET)
m
m 1 inch= 40 ft.
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LICENSE NO, PROFESSIONAL LAND SURVEYOR
2 .0
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j( SHEET 2 OF 8

/ / 1 / - v A \ j — A V
�� // \ v �� \\ � AUXILIARY SPILLWAY DISCHARGE
\ \\� �
1� f \ \ (NO CHANGE WITH PROJECT) \ /
bS264.9' Av �� v \ v v v � � � � AA � � 1� VA V� - - �\� � VAAAT
PROVIDE CLASS B RIPRAP WAVE PROTECTION V A //� f // / �j �� / A.MORTCO CONSULTING
AND ASSOCIATES,TES,INC.
_ALONG UPSTREAM EMBANKMENT 5 FT ABOVE
/ I / CONSULTING ENGINEERS
100 GATEWAY CENTRE PARKWAY,SUITE 200
AND BELOW NORMAL POOL ELEVATION OF 284.0 I f / ) I
I � � � � � � � / � � � � i RICHMOND,VA 23235
1_c i_ ��' X��X�X / ��—� �� A `I � ! �\ V A�� �� ����- // � �� EMAIL:DRISSME [e-mail]
wvX� i I END O� NO VEHICULAR TRAFFIC OR HEAVY
_
— --- X
/ \-__-- - / �� DESIGNAT / EQUIPMENT IS PERMITTED ON FIRE LANE
c -1 P P��------ / �� i'�v SIGNAL / ACCESS DRIVE ADJACENT TOMRIBUILDING
__` c _
\ ca - c - w=per`w�wX _ /' DEMOLISH SLOPED CONCRETE
SLAB FOR SLIP LINING AND �/ \�� J
�Omc-- 14 DI - - �"--_-_ / RECAST ONCE COMPLETE. -- _'--_, ��� / _ _ — \ J \
---------- --
_27 — SLIPLINE EXISTING 60"DIA CMP OUTLET _ ;,/ /III\I \ 1 \ 1 \\\\\ \
_ 1
CONDUIT WITH NEW ASTM D 3350 ���
-TQJ 54"DIA HOPE DR-32.5 PIPE_ I \
�-4------_ _--0-------- _ PROVIDE TRAFFIC
--- - -� �___ --_ --- __ CONTROL BARRIER 215±FT RETAINING WALL
---------- --- �� -- - _ 7— — _- _-,-8 �� \ 150±FT Imo.
— — — — _275—__---- - 28 - - ,- ---' — '2 5'-'-T / II VEGETATION 200±FTRIPRAP / r
-- FILTER DRAIN -- --- - - — ''� \ 100±FT
- -�- i - - — - \ I I^ PLANTINGS
--- -D- ------ - '--'' _ '' _-'' — — _-'' I I III VEGETATION �NCA&
5 N
---- —280— — — — — — — — '
— — — ------ r—_ — — — _
-280— — — --------- J _ — — ,--- -- - ' 80_FTRIPRAP
--- ---
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_-_---- ---- _--
r / \ + hI \� PLANTINGS �/
-rsa� -------- - ---- - -- _--�- '- - PIEZOMETERLOCATION�- ,- — �I -a 04�g � c
_- B-8AIL�' —� ���I / 208±FT / �/� VAS \� U ��
_ / VEGETATIONiI
--- - ---------- _,--- ss �s��s - - �- _--'- _-- - / \\\\ PLANTINGS
_-- --- PIEZOMETER LOCATION --- --———— s 290— --__---__ / \ �� 24: / \ VA �/� _ ��I� A ., A. KR�
- - __ _____ — — — — 5-=SS��SS-� - — —295— 1 '� �� I `�� + / I ��� n����
-- - — - - -as- -75» / / 23 34_FTRIPRAP ❑ I — �
— —290— — ------ — — _---- — -
- — — — — — ----- - - - s�- `ss //� �� I I I I — _ BRIDGE8
---- -- --_------ — — �S�S 38_FT RETAINING WALL
--- — ROT DRAT SS —
—295— s // / // —
__ ________ _' __ 86--- — —
---- _ ---- — --- I / // I / 34_FTRIPRAP
' III II2�,� + // II
NO ANTICIPATED WORK
--__ _ --------- — ------------ N
- - - -_ _ - - -295- -= - -� - - __ __ -_ ,�� ,� ,� // ,- �j �� REPAIRNIHDAM
_ _ �� �I1 �� IIIII IIII lI I III I I / I� INLETS AND OUTLETS
--- _---- -- +-- // LIR�I�YI� ��� �� �I��/ ���IIIIII /III 44±FT III/ II �/It � �\ TASK ORDER C100809
--- -- i I
/ \ �A DAM INVENTORY#DURHA-105
--f�—R—F6b—�—�—E-------��
N VEGETATION
-------
� A\�
FEDERAL NID#NCO1666
o PLANTINGS DURHAM COUNTY,NCTR AFFr BFA6--- ------ U
ITH RAISABLE METAL LIGHT - E
_ �
° o � � _ I
(NO ANTICIPATEORK)295.18' BRIDGE 1
HH95— (NO ANTICIPATED WORK)
METAL
44±FTVEGETATION
ri `
��EVB — / —�� \ \�A�\� _ i, PLANTINGS -
IS 71� CONCRETE RISER STRUCTURE \ 10 \\\\ \\_� I I I PERMIT SET
V L 212±FTRIPRAP �� �/
9 HH 295.43' �a u�B -_ --' III I I I �� j'j// 40±FT RETAINING WALL
� 1 ; \
_ II
UTDB HH ___-'� _ �l/�III��/ 72±FTRIPRAP -
H—uina — —uT�uEn�—uene _ --�-� _29o, - /208±FT / i _— 12
uE3a— - _-- 2� i _ - VEGETATION
p UE UE�—UE�ILE - _ - - /� /
J �' / I PLANTINGS /� / 120±FT RETAINING WALL
__ V1 RIPRAP 13 —�\�� NATIONAL INSTITUTES OF HEALTH
Y —————————————————— _ _ _ 11 E
——
a --------------------------�- _LI G-H-T - - I I I I I III / 21 / f, /��i \ III 45±FT 14 16 �, \\\ \\ - / 1 DURHAM,NC 2709 1V
o ------------------- ------ a - _ — �_ ---- _-- I I I ��/I III /��BRIDGE2 I I 115±FT �a� \\\ �\ V [phone]
V —— — N ———
th ————— ————————— —— —
O — I I / /
a --- - — — / j(NO ANTICIPATED WORK)I I VEGETATION 15
_YAF�RI7ADE —29�- —C ___- __ _ '�' II�� I I ✓ //� /f I I �/ I I III PLANTINGS 100±TRI RAP VA\ \ �� MARK DATE DESCRIPTION
----------_C��TRG -EQ�EC-----a _ gD I �L �/� �� /// I I I�I / I� II 120±FTRIPRAP 118±FTRIPRAP
-- -- -- _
o — ---------------
SLIPLINE EXISTING 60"DIA CMP INLET _ / �\ ✓ BRIDGE 3
CONDUIT WITH NEW ASTM D-3350 I II // �/ (NO ANTICIPATED WORK / � — 18 17 V A
54" IA HDPE R-32.5 PIPE — I / / V� %// )I
---- _
,2
'� '104+FTRETAININGWALL �\
�' / I �� // f — �A % //� � lII lI llI//I�I �/�I�I1� �/ � 60+FT
O ✓ ---------------- ----- + V / / i- ___--' A / /// / II IIII I (I ( IIII �-VEGETATION
' V / / 1 \ / / / PLANTINGS
- ,- --------- ----- ---- l
m SLIPLINE EXISTING 36"DIA CMP LOW LEVEL -
- DRAIN CONDUIT WITH NEW ASTM D-3350 ---- --------'
-32.5 PIPE
// // f \ 111��� /��� /�/ � � AV V��A BRIDGE
-'30"DIA HDPE DR �' __-_ — — \
o // / /'------------- ---' �/ / -- // // /�I f/�/ /f/� � BRIDGES \ (SEE SHEETC4.1) PROJECT NO: 22-0363.001
— _ _ _ _ _ l I /� // i I I (NO ANTICIPATED WORK)�\ / \ //
PROVIDE CLASS B RIPRAP WAVE PROTECTION -275— BRIDGE / I I I / i ���III � \\�I/ �� // ` �� / /i� DESIGNED BY: DAK
_ \ SCALE: AS SHOWN
Y ALONG UPSTREAM EMBANKMENTS FTABOVE / —
3 AND BELOW NORMAL POOL ELEVATION OF 284.0 // / / //.(NO ANTICIPATED WORK) / �JII III/����// /� I I�/�� VA�I I I I I I I / ///j DRAWN BY: KHH
/----------------------' \ //// �///f/ /� I //f /���II/II�� �_���� ✓✓ I
17�% 4ri
1w
CHECKED BY: DJR
> SHEET TITLE/ -----0 /
x271.6' �- '°�•°�•° �SHORELINE REQUIRING AQUATIC VEGETATION PLANTINGS �� I �� III I II� �I I PROPOSED SITE PLANS
'. ��`.�`� �`• �/ y �\f------------------------- \ � •""""•'"a1""••"""" SHORELINlE REQUIRING RIP RAP INSTALLATION
__________________y SHORELINEREQUIRINGRETAININGWALLINSTALLATION
-------- �a -- ---- ----' -------
D3 �1 PROPOSED SLIP LINE SITE PLAN o o' zo' a° �1 SHORELINE FORTIFICATION PLAN o 50' 3°°' C3 .0
? SCALE:1"=20' L SCALE:V=150'
j( SHEET 3 OF 8

-71 \ �\ \VA \ // / ( \ V / �A NOTES
1. EACH INDIVIDUAL AREA SHOWN BELOW CONTAINS A DESIGNATED ACCESS
SAME
AREA.
WILL BE USED TO ACCESS THE SHORELINE WORK LOCATIONS
FOR AM
\ \ I 1 \ �� — �\ ( n� \ / Z. TREE STUMP REMOVAL AND REGRADING TO CREATE A MORE GRADUAL AAT
7 DURATION OF PROJECT EXCEPT FOR NO ROAD CLOSURES ARE EXPECTED FOR / SLOPE FOR ACCESS. PATH SHALL BE RETURNED TO PRE-CONST.CONDITION A.MORTON THOMAS AND ASSOCIATES,INC.
MINOR INTERRUPTION DUE TO WORK V I \ \ \ 1 �iL.l I ��A �� / / / / (MINUS TREE STUMP). CONSULTING ENGINEERS
VEHICLES AND MATERIAL DELIVERIES. AA CONTRACTOR ACCESS"A" / �I / 3. GRASSY AREAS SHALL BE MOWED FOR MATERIAL STORAGE AND ACCESS goo enrewnv CENTRE PARKWAY,23235 sulTe 200
\ TO LAKE BED FOR SLIP RICHMO804 272az3s
I, LINE OPERATIONS I �O 4. CONTRACTOR SHALL RETURN ALL AREAS H SIMILAR OR BETTER CONDITIONS PHONE @A TENGIN
\ / � \ I / I / � / THAN PRE-CONSTRUCTION CONDITION WHEN WORK IS COMPLETE. EMAIL:[e-mail]
WALKPATH ACCROSS DAM SHALL BE O I I 5. CONTRACTOR SHALL COVER THE WALKING PATH WITH RUBBER MATTING
CLOSED FOR THE DURATION OF PROJECT I WHERE AND WHEN WORK WILL BE OCCURRING.
/���A\���AVA�IIII IAA \V� l 1 V I I 11 VA\1 / i 1
i FOR PEDESTRIAN SAFETY. ADEQUATE 11 /� �� 7I�� 16. CONTRACTOR IS RESPONSIBLE FOR DOCUMENTING EXISTING CONDITIONS
--� SIGNAGE SHALL BE PLACED AT EITHER END. r EQUIPMENT STAGING \ RELATING TO THE WALKING PATH BEFORE ANY WORK HAS STARTED.
SAND MATERIAL TORAGE AREAS I 7. CONTRACTOR SHALL MAINTAIN A MINIMUM 12 FT
BUILDINGSBUFFER BETWEEN EPA
AND ALL STORED MATERIALS AND VEHICLES.
AERATION PUMP= B t / - \ I )8. EXISTING PAVED PATHS AROUND EPA BUILDINGS ARE FOR EMERGENCYmc
AND MANIFOLD — \ TREES IN THIS AREA ACCESS AND� SHALL E MAINTAINED / I 9. WITHIN LIMITS PROPERTY PROPERTYUST IALL STORED MATERIALS MUST BE STORED ON
\\ �1 / NO VEHICULAR TRAFFIC OR HEAVY — N CLEAR AT ALL TIMES.
a 3 AND PROTECTED GRASSY AREAS AS CLOSE TO TREE LINE AS POSSIBLE.
\ / / // Q CIPMENT IS PERMITTED ON FIRE LANE ` 0. NON CONSTRUCTION RELATED VEHICLES SHALL UTILIZE CAMPUS PARKING
VAAw_ _ vV\ / _ v
�� \\ �i I I 1
� \ I / / 0 MRI BUILDING % -- -_= COFFERDAM � -- I \� � LOTS AS DESIGNATED AND CARPOOLTO AND FROM WORK AREAS BEHIND
ESS DRIVE ADJACENT T
EPA BUILDINGS.
CONTRACTOR I I I �� I ■ �� ��� \\\----A-'R\O1E A
C ONTRACTOR
------------ �PARKING ,'/x PROVIDE TRAFFIC ESS PATH/(D'
��p I// II� ICONTROL BARRIER
cA
TO LAKE BED FOR SLIP
LINE OPERATIONS\ S,
CONTRACTOR ACCESS B "
=
TO LAKE BED FOR SLIP
p0 40 2 15
BRIDGE 8LINE OPERATIONS (NO ANTICIPATED WORK) 2I
� ;c
I / / I '— I � v� � III � � � � � •� � ,���� w I \ Iv1
CONTRACTOR
'CONTRACTOR ACCESS PATH"I'" ■ _
V / �
ACCESS PATH l( I i I ; I ) A I - - A\ I A I I A III
I A CONTRACTOR
ACCESS � I
I
/NIHENTRA CE�\V PATH E"
REPAIR NIH DAM
PORTIONS OF WALK PATH SHALL BE INLETS AND OUTLETS
\VA\V A \ VA V A I CLOSED AS REQUIRED FOR CONSTRUCTION
V A\\VA\\ VA VA ( OF SHORELINE STABILIZATION MEASURES TASK ORDER C100809
1
f r \ // / A\\V I I I I DAM INVENTORY#DURHA-105
CONTRACTOR�� �� VII / A A\�V I I l FEDERAL NID#NCO1666
ACCESS PATH"G" DURHAM COUNTY,NC
_
l II s
CCESPTHAS A
°r' �I I I I I I % THE CONTRACTOR SHALL RESTORE ALL ACCESS
PORTIONS OF WALKPATH I I I I( I I I i, S
A� �\ \ PATHS BACK TO ORIGINAL CONDITIONS. PERMIT SET
SHALL BE CLOSED AS I
♦♦ STABILIZATION ACTIVITIES
BRIDGE BRIDGE
(NO ANTICIPATED WORK) / SUPPLY TUBING(TYP) ; (NO ANTICIPATED WORK)
/ \ II \� AV I I I I � / Illl// ///11111�// // _ — � �� 1 �� A �A�\ \\ VAA•
NATIONAL INSTITUTES OF HEALTH
AREA
REA#3_
�
111 T.W.ALEXANDER DR IVE
BRIDGE 3 \ DURHAM,NC 27709
\ � [phone](NO ANTICIPATED WORK) 0 / 1 V `
TE LOCATION OF
(TYP OF 10) \NTRACTOR
MARK DATE DESCRIPTION
ACCESS PATH"H"
BRIDGE 3 l 1/
CONTRACTOR
/ (NO ANTICIPATED WORK)
l
— _ I IIII ACCESS PATH��K��
_ - - %�- 1 1 ( I I �
AREA#4
III11111111/
// �;—S
/BRIDGE
vv _ Av 0 I I
/i I (NO ANTICIPATED WORK)
PROJECT NO: 22-0363.001
_v \ BRIDGE 6
\ \ �
SCALE: AS SHOWN HOWN
w (SEE SHEET C4.1) DESIGNED BY: DAK
DRAWN BY: KHH
CHECKED BY: DJR
BRIDGE 4
/ l lI III \ VAA VA I I (NO ANTICIPATE�WORK) SHEET TITLE
V� II( / %i ---- I �� / ��— VAA( l/ //l I I I
O I I I \ V I I I I \ \ V �/ / / l ✓
��/
17�1% 4ri
\No
/j
SITE ACCESS, STAGING
_— �vvVAV \\ \
�, A \
EXISTING ACCESS PATH E ..NO TREES WI
// \\\\� / \ \\ \\�\ \ AND AERATION PLAN
BEEMOVEDLHERE.DTO
'�%� /i ���;� _ i// ,- / II IIII��j � i �� — lljlo � vv A
PROPOSED SLIP LINE SITE PLAN 0 11. zoo•
C3 . 1
U
SCALE:1"=100'
j( SHEET 1 01 8

31 310
STEEL GRATES SHALL BE PRESERVED AND MODIFIED EXISTING CONCRETE RISER GUARD RAIL UNDERGROUND
AS NECESSARYTO BE REINSTALLED ON END OF NEW GRAVEL SLOT DRAIN PAVED ROAD ELECTRIC EL.N/A
30 OUTLET PIPES SIMILAR TO EXISTING CONDITION. 300
DEMOLISH AND RECAST SEE ENLARGED DETAIL 4
SLOPED CONCRETE SLAB EXISTING GRADE PROPOSED WAVE PROTECT ON AAT
AROUND NEW OUTLET PIPES UNDERGROUND GUARD RAIL SEE DETAIL A.MORTON THOMAS AND ASSOCIATES,INC.
__ NORMAL POOL CONSULTING ENGINEERS
29 CONC.SIDE WALL PROPOSED SAND �; 284,pp 290 100 GATEW RI HMOND,VA 235 SUITE 200
FILTER DIAPHRAGM. 15"RCP SS 60"CMP ---- ---___ PHONE[phone]
CONC.SILL SEE DETAIL
INV.275.07 INV.284.0 280 EMAIL:[e-mail]
28 CATHODIC (CALC) 60"CMP TELEPHONE EL.N/INV ----
77
LINE EL.N/A -
-- 270
27 _ _ J LOW LEVEL RAIN VALVE INSIDE EXISTING 60"CMP INLET CONDUIT
60"CMP
--
CONCRETE RISER TO REMAIN PROPOSED SLIP LINE WITH ASTM D-3350
c 4ri
26 EXISTING OUTLET CONDUIT SHALL BE 36"CMP 54"HDPE DR-32.5 PIPE EXISTING 3 "CMP LOW LEVEL DRAIN INV.272.95 EXISTING 60"CMP OUTLETIC IF;"EMP 260
REMOVED TO THI;POINT ZWATERLINE 60"CMP OUTLET CONDUIT PROPOSED SLIP LINE WITH ASTM D-3350 INV.FLANGE OR CONDUIT ROPOSED SLIP LINE WITH LOW ASTM D-3 50 30' HDPE DR-32.5 PIPE INV.273.0
EL.N/A INV.266.95 54"HDPE DR-32.5 PIPE TRANSITION
25 250
0+00 1+00 2+00 3+00 3+50
PROFILE THROUGH DAM OF PROPOSED SLIP LINE 0 15' 30'
SCALE:V=15'
---J�W W�
/�/ W— w PORTION OF EXISTING 60"CMP OUTLET EXISTING GRADE / 2'-0" �
C4.0 STEEL GRATES SHALL BE PRESERVED AND MODIFIED PIPE TO BE REMOVED(APPROX. 20 FT) (7YP) ��� � ?�: C� �.
k� I AS NECESSARYTO BE REINSTALLED ON END OF NEW /*
OUTLET PIPES SIMILAR TO EXISTING CONDITION. ----- ------ i "
k\ N _ a SEAL `�
WWF 6 x 6-W2.1 x W2.1 /�,✓ 2� GROUTI PLUG AT END OF - = 0,4/02(1�5� '
i CONC.SIDE WALL / PROVIDE RODENT GUARD SLIP-LINE(2 FT LONG)
AT END OF EACH FILTER IN
DEMOLISH AND RECAST �'o70.."'...
----- i� SLOPED CONCRETE SLAB m .,�4 KR1,��•r•
----- i A PROPOSED SAND
- i SKEW CUT END OF �! m AROUND NEW OUTLET PIPES ��PILFER DIAPHRAGM.
CONC.SILL PIPE AS SHOWN. 1/8"/FT SLOPE z_
y _ d (ASTM FINE
— — — — — — — — AGGREGATE)
6'0DRAINS
EXISTING BOTTOM
SLAB TO REMAIN REPAIR NIH DAM
EXTEND HDPE SLIP LINE TOTHE SAME APPROX POINT AS �� �� o� o 0 0 0 0 ��- y��/�, /�,�, 4"SOLID PVC � INLETS AND OUTLETS
4'0" MIN
_ THE EXISTING CONDUITS. a �A �A �A �A �A �� �� ����� DRAIN PIPE 4"PERFORATED PVC ���� TASK ORDER C100809
� � ���/ �V��iA���V��iA���V�������� DRAIN PIPE(SEE DETAIL 5) ��//
DAM INVENTORY#DURHA-105
BOTTOM OF FEDERAL NID#NCO1666
12"LONG#5 REBAR DOWEL, DRILLED AND COLD JOINT BETWEEN EXISTING NEW 54"HDPE DR-32.5 EXISTING OUTLET CONDUIT SHALL BE EXISTING PIPE
GROUTED 6"INTO EXISTING SLAB AT 18" AND NEW CONCRETE SLABS SLIP LINE OUTLET PIPE CUT AND REMOVED TO THIS POINT DURHAM COUNTY,INC
fl fl fl SPACING PRIOR TO CASTING OF NEW SLAB
II III r SLIP LINE AND GRADED FILTER DETAIL AT END OF OUTLET CONDUITS
3 SCALE: 1/2" V-0"
I II I EXISTING 60"DIA CMP EXISTING 60"DIA CMP PROPOSED 54"HDPE
A PROPOSED 54"HDPE 4"SOLID PV
SLIP LINE PIPE
SLIP LINE PIPE j DRAIN(PIPE C
4"DIA SOLID PVC o I� _ ` ALL SIDES E
4 #67 STONE PERMIT SET
--- 9-T� / PROPOSED SAND
0
+ FILTER DIAPHRAGM ASTM C-33 FINE
4"DIA PERFORATED I 2-p AGGREGATE
PVC WITH ENDCAP I II I I (T,P) GROUT PLUG AT END OF
--�--_ - SLIP-LINE(2 FT LONG)
o -
REVISED ! _
c �- - NORMAL POOL q NATIONAL INSTITUTES OF HEALTH
Y +I , UT AND REMOVE PORTION NEW 54" —
` ...... ...._. I ( ELEV.-284.4 111 T.W.ALEXANDER DRIVE
a �r "' / IA HDPE SLIPLINE PIPE. CUT FLUSH RHAM,NC 2n
— / ---------- WITH INSIDE CONCRETE SURFACE — — — DD(984)287-438209
---
v - —
291_ _ - EL.284.4 '
n ------ 1 -7 EL.284.0 MARK DATE DESCRIPTION
EXISTING A' A/\/�,
REMOVE EXISTING _ - ----- I REMOVE EXISTING NORMAL POOL
ELEV.=284.0
o -CONDUIT BACK TO CONDUITBACKTO
THIS POINT I _ THIS POINT VA 4"PERFORATED
o _---- -- --- - -- PVC DRAIN PIPE
SECTION A-A'
OUTLET STRUCTURE AND SAND FILTER PLAN SLIPLINE MODIFICATION DETAIL INSIDE PRINCIPAL SPILLWAY RISER FILTER DRAIN DETAIL
2 114"=V-0' 4 SCALE: 1/2"-V-0" 5 SCALE:2"-V-0"
U
O
Q
U
0 \
m \
O
rn
W
° GASKET PROJECT NO: 22-0363.001
z
SCALE: AS SHOWN
w DESIGNED BY: DAK
5
DRAWN BY: KHH
CHECKED BY: DJR
> SHEET TITLE
y
0
0
SECTIONS AND DETAILS
IN N
"SNAP-TITE®"
c0 PROPIETARY"SNAP-TITE®"WATER
m HDPE PIPE TIGHTJOINT WITH GASKET
w
a
F
t PIPE JOINT DETAIL C4 .0
m 6 NTS
j( SHEET 5 OF 8

NOMINAL TOP OF WALL NOTE:ANY UNSUITABLE MATERIAL SUBGRADE SHALL BE 12"TO 36"TO * FINISH GRADE OF RIPRAP SHALL EXISTING GRADE
ELEV.286.0 UNDERCUT AND REFILLED OR BRIDGED WITH STONE. MATCH RETAINING MATCH EXISTING SLOPE BUT
MASONRY MORTAR STACKED NATURAL STONE NOMINAL TOP OF WALL V-0"MIN WALL HEIGHT SHALL NOT BE STEEPER THAN 1:1 PLACE GEOTEXTILE WETLAND ZONES AND SPECIES
FABRIC UNDER RIPRAP
(ASTM C270,TYPE N) IN RUNNING PATTERN ELEV.286.0 18"LAYER OF NCDOT / DEEP POOL
MASONRY MORTAR No retaining wall face is to extend from the normal / AAT
CLASS B RIPRAP VAS QTY TYPE
ASTM C2710,TYPE N edge of water more than 4'into Discovery Lake. \\ / /\/ 72 NUPHAR ADVENA(SPATTERDOCK) HIGH WATER:Landward shift of plant communities
( ) A.MORTON THOMAS AND ASSOCIATES,INC.
_ 72 NYPHAEA ODORATA(WHITE WATER LILY)
PROVIDE#4 REBA - V/VA�\\��AV� SHALLOW WATER LOW WATER:Lakeward shift of plant communities CONSULTING ENGINEERS
100 GATEWAY CENTRE PARKWAY,SUITE 200
NORMAL POOL "' NORMAL POOL AT 16"SPA.WITH +i q NORMAL POOL * \/\\ \\ QTY TYPE RICHMOND,VA 23235
o > 10 0 ^ ELEV.284.4 1 /�//� UPLANDS ,SHRUB WET MEADOW; EMERGENT MARSH AQUATIC PHONE[phone]
ELEV.284.4 ELEV.284.4 2"MIN.COVER \�\/ 287 PELTANDRA VIRGINICA(ARROW ARUM) EMAIL:DRISSMEYER AMTENGINEERING.COM
1 \ Wood shrubs,Shrubs Sedges Emergent perennials Floating-leaved& @
m \�\ 288 PONTEDERIA CORDATA(PICKEREL WEED) Y 9 9 P
6;- �\ \�j Trees Vines Grasses submersed plants
SHALLOW LAND Sedges herbs
o �\ VAA�� QTY TYPE
192 ASCLEPIAS INCARNATA(SWAMP MILKWEED)
\ 191 EUPATORIUM PERFOLIATUM(BONESET), �I 1
STACKED NATURAL STONE a°o — /\/ )
/ 192 LOBELIA CARDINALIS(CARDINAL FLOW 4ri
ER)
IN RUNNING PATTERN AT " o /VAj�AA Geotextile fabric is to
- 1:10 BATTER �-+ /VA VA�V //� be used on the face Of WATER'S EDGE 1 ���! _ _ Hlgh Water
� �Q / /\\/\/////�\�/j the dam only. Rip rap QTV TYPE � _I NORMAL
SOIL OR STONE is to be placed on the 191 CAREX CRINITA(FRINGED SEDGE) _ _ Low Water
CONCRETE RETAINING // / 192 IRIS VERSICOLOR HARLEQUIN BLUEFLAG - ' ' " '
#4 x 12' LONG REBAR ,0„ BACKFILL \� \\//EXTEND AS REQUIRED TO surface of existing 192 JUNCOS EFFUSUS
WALL FOUNDATION 2 ((SOFT RUSH)
DOWEL AS REQ'D FOR #4 x 12"LONG REBAR ESTABLISH A \ MATCH SHORELINE SLOPE AND 9 ground. No fill
ELEVATION STABILITY CONCRETE RETAINING DOWEL AS REQ'D BENCH FOR RIPRAP REACH BELOW WATER LEVEL material or excavation
WALL FOUNDATION FOR STABILITY is allowed.
RETAINING WALL FORTIFICATION DETAIL SECTION 2 RIPRAP FORTIFICATION DETAIL 3 VEGETATIVE FORTIFICATION
NOT TO SCALE NOT TO SCALE
GROUND LEVEL
/.ter �T -•- .�,.� tsNsrnrptrr�
EXISTING 60"CMP PIPE NEW 54"HDPE DR-32.5 N GA&
i
6"THICK CONCRETE PAD
SLIP LINED PIPE
IOUIND GR NEW 30"HDPE DR-32.5 S
18"THICK CLASS B RIP RAP 5 FT EXISTING 36"CMP PIPE 12"ALUMINUM LOCKING WELLEX
EXIST NG ABOVE AND 5 FT BELOW / EAL
CAP(ROYER#12LC OR EQUAL) _ 215
c
NORMAL POOL ELEVATION SLIP LINED PIPE 040
O 0 \
6"PVC SCHEDULE 80 PIPE �j� QW k
IN
, �
70
2"DIA.SCH 40 PVC PIPE ��.,rq�rKRIS 01
tz
NORMAL POOL BENTONITE CEMENT GROUT
284.4 I ' EXTEND TO 5 FT BELOW
li GROUND SURFACE
Geotextile fabric is to be used on the face of the dam F j BENTONITE ANNULAR SEAL REPAIR N I H DAM
only. Rip rap is to be placed on the surface of existing
ground. No fill material or excavation is allowed. 6' MINIMUM BORE HOLE _ INLETS AND OUTLETS
_ TASK ORDER C100809
-�
FILLER SAND DAM INVENTORY#DURHA-105
\`:�A:�A iV��iV � � � � /�' _ FEDERAL NID#NC01666
/ GROUT ANNULAR SPACE 2"DIA SCH 40 PVC WELL SCREEN
WITH NON-SHRINK (0.010INCH SLOT WIDTH)� DURHAM COUNTY,NC CEMENT GROUT WELL SCREEN BOTTOM ELEVATION =
PROPOSED UPSTREAM WAVE PROTECTION DETAIL SLIP LINE DETAILS PIEZOMETER
4 1/4"=1'-0' S SCALE:3/4"-V-0" 6 NOT TO SCALE
NOTE: USE MIN 3000 PSI CONCRETE FOR CAST IN PLACE NOTE: USE MIN 3000 PSI MIX DESIGN FOR FLOWABLE FILL APPLICATIONS
STRUCTURES. SAME MIX DESIGN SHALL BE USED FOR FLOWABLE FILL USING SANDBAGS OR STANDARDS FORMWORK. PERMIT SET
APPLICATIONS USING SANDBAGS OR STANDARD FORMWORK. EXISTING BRIDGE ABUTMENT
MATCH TOP OF (GEOMETRY AND DIMENSIONS 4"DIA.SOLIP—A
RETAINING WALLTO TOP SHALL BE FIELD VERIFIED) STAINLESS WASHER
f~�I OF EXISTING ABUTMENT
EDGE OF WATER o BRIDGE DECK
#5 REBAR LL
Z i/ (SPA @ 10' O.C.) > BRIDGE BEAM
o #5 REBAR @ W NATIONAL INSTITUTES OF HEALTH
Y _ 1.4.
15°MIN �\ 10"MAX SPA. +i 111 T.W.ALEXANDER DRIVE
MIN DURHAM,NC 27709
o C4.1 0_ FORM USING [phone]
o ��� - - - SANDBAGS OR
NOTE: STD FORMWORK
ONCE LAKE LEVEL IS LOWERED AND \ SEE NOTE MARK DATE DESCRIPTION
FOUNDATIONS ARE EXPOSED oa a
S STEEL BOLT
PROPOSED CONCRETE RETAINING WALL CONTRACTOR SHALL PERFORM FIELD /
3 SHOWN FOR NORTH END OF WESTERN VERIFICATION EXISTING CONDITIONS FORM USING POTENTIAL EXISTING )
° ABUTMENT. OTHER LOCATIONS SHALL 2'-0„ SANDBAGS OR GROUND LINE
AND REPORT FINDINGS TO ENGINEER SEE NOTE AND WASHER
g BE ADDED BASED ON FIELD POTENTIAL EXISTING STD FORMWORK
CONDITIONS AND BUILT ACCORDING GROUND LINE
TO DETAILS SHOWN HEREIN. / 'I BRIDGE 6 RETAINING WALL SECTION BRIDGE 6 EROSION REPAIR DETAIL RODENT GUARD
0
3/8"=1'-0" 9 NOT TO SCALE 1� NOT TO SCALE
U i
Li Lj
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u -
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5
Z
m =
w
i
a PROJECT NO: 22-0363.001
x g
Z PLACE GROUT OR PLOWABLE FILL IN C4.1 � � Z SCALE: AS SHOWN
ERODED AND UNDERMINED AREAS DESIGNED DESIGNED BY: DAK
Y TO STABILIZE ABUTMENTS AND a
5 PROVIDE STABLE FOUNDATION FOR DRAWN BY: KHH
RETAINING WALLAS NEEDED. i CHECKED BY: DJR
w -
'
N SHEET TITLE
0
i
--- ADDITIONAL SECTIONS
_ AND DETAILS
EXISTING BRIDGE 6 --- EXISTING BRIDGE 6
WESTABUTMENT EASTABUTMENT
SANDBAGS o OR f CONDENSATE PIPE
a STANDARD FORMING SUSPENDED FROM BRIDGE
r BRIDGE 6 PLAN(FIELD VERIFY ALL DIMENSIONS) C4 . 1
c=i 7 3/8"=V-0'
j( SHEET 6 OF 8

I V\ I / STAGING AND STOCKPILE AREAS
SHORELINE REQUIRING AQUATIC VEGETATION PLANTINGS / // /
AREA A=0.54 ACRES(SEE NOTE)
� �� �� \v A v\ \\ \ ` �A^•wA• SHORELINE REQUIRING RIP RAP INSTALLATION � �� // /// / �� AREA B=0.50 ACRES(SEE NOTE)
0�264 9
\ / _ \ I I f $F / AREA C=0.50 ACRES(LAKE PERIMETER)
�j� I; / �v \v vv \ ���� ��_ �w •w •. SHORELINE REQUIRING RETAINING WALL INSTALLATION �� V /
-_ — AREAA CE /NOTE: INDIVIDUAL TREES IN THESE AAT
SF �� / �/ Avg — o �i/. /AREAS SHALL BE PROTECTED ACCORDING A.MORTON THOMAS AND ASSOCIATES,INC.
/ / \\\\ i /// CONSULTING ENGINEERS
\ \ — / �ii /�I l` C TO SECTION 6.05 OF THE NC EROSION
I of OTHER DISTURBED AREAS-- /��%i i/ ��AND SEDIMENT CONTROL PLANNING 100 GATEWAY CENTRE PARKWAY,SUITE 200
__X— / ��AREA D=0.31 ACRES --CW CONCRETE WASHOUT ° \� RICHMOND,VA 23235
26 ACRES cP� AREA E=0.
AND DESIGN MANUAL PHONE [phone]
a° X� , \
SF � , � — - — — - — EMAIL:[e-mail]
AREA B a
III _ END OF < // / — _ — — — -CONTRACTOR SHALL ENSURE
\ $F -— x �O DESIGNATI _ - /- gOL°o- CE PS
TREES IN THIS AREA ARE
\ ------ n —DI i / AREA D= _ PROTECTED FROM DAMAGE
�_ I �IL�i Il \ I - b \ \
Pica _ _ c___ c__ w w — _ / Loo Loo o�
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—270- �'� ��'�� —___— ', '���� � \ \ �� �I�� PROVIDE
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DENUDED SF
PS
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_ � 'CONSTRUCT OUTLET PROTECTION LSD ��. 1/ � I�v I�', COMPLETION OF SHORELINE FORTIFICATION.
__ _ ACROSS CONCRETE OUTLET,SEE DETAIL _ � � � � � i , ,� �. . -I' P$
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SF
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—_--- — _ _ _ -PROVIDE PERMANENT SEEDING _ \ I \
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2� PS �/ FENCE FOR ACCESS -(NO ANTICIPATED WORK) _ 040215
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--- 295 �� ) I�III / l l I I I %J w REPAIR NIH DAM
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_ - — — — -295- INLETS AND OUTLETS
----- - ,
TASK ORDER C100809
--- +� --_ °
DAM INVENTORY#DURH
A-1
05
FEDERAL NID#NC01666
_ PS
——— — BRIDGE
(NO ANTICIPATED DURHAM COUNTY,NC
———————————————————
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---�83 — — — — — — _ uB� 295.1/8' BRIDGE?
—295METAL CI (NO ANTICIPATED WORK) $F
PERMIT SET
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NATIONAL INSTITUTES OF H EALTH/ 11 71VE
———————— DURHAM,NC209-------------- (9
------------------------- O— \ 84)287-4382
X— — — — — — -290- ), , I III \A VAA\A VVAAAA\ /�\( � MARK DATE DESCRIPTION
— -- ——— ——— ——-- BRIDGES
-- 10o NOANTICIPATED WORK)
———— a °° PS V A
l 111 /l ll1/l i/_ A A vv
LAKE PERIMETER FORTIFICATION DISTURBED AREA
(ASSUMED 8 FT WIDE X 2400 LF)=0.50 AC I I/ BRIDGE
— Loo—LpD __ I I / (NO ANTICIPATED WORK)
/ _ (ACCESS PATHS AS SHOWN ON SHEET 3.1 WITH I I
—LOD��oo�Ea^�1OD�LOD ----- �,2 �i �_---- —��'� i _ ASSUMED 12F WIDTH)=0.27 AC
5 --—_—_PROVIDESILTFENCEAS —280— ---- — _ TOTALAREAC 0.77ACRE5 \\ \�� ✓/� _ \�� \
a REQUIRED AROUND SLIP ———————— — _ SF �� / --_--'' \ /� /��� /�//��/�// �A —�� \� BRIDGE
o — LINING OPERATIONS ----- i— /// � — �/// �//� BRIDGES
------_ ab, / __---- / / ���\ (REFER TO SOW) /
o /" ------' (NO ANTICIPATED WORK) /
EROSION CONTROL LEGEND
0
° --_�_ CONNECT BYPASS WITH SANDBAGS— \— V1 —i / / TITLE KEY SYMBOL STD.&SPEC. QUANTITY
$F — FROM 12"PIPE TO INLET OF LOW — _ / ��������/ �� I I J / /
LEVEL DRAIN V — — ° / ,� LIMITS OF DISTURBANCE �LOD� 2.38 ACRES / A�VA��/// �� I / PROJECT NO: 22-0363.001
/�� �A� SCALE: ASSHOWN
o TREE PROTECTION TP 6.05 1200 L.F. I / / \� / / DESIGNED BY: DAK
3 / ------_ _ PROVIDE TEMPORARY12' PIPE AND' I�/�� / � DRAWN BY: KHH
/z VALVE THROUGH EMBANKMENT a / ��� //�� // CHECKED: KHH
FOR DAILY FLOW CONSTRUCTION ENTRANCE CE 6.06 3500 L.F. DJR
/ I � I I /I //- / SHEET TITLE
O — SILT FENCE 6.62 3500 L.F.
CD
/O° _
17�% 4ri
PERMANENT SEEDING/SOD PS 6.11 1.5 ACRES
EROSION AND SEDIMENT
° OUTLET PROTECTION SHEET CS 1 \
woA °� 2'�" �LOD O ELEVATION
LE PROVIDE275.0
5.0TO UP OP / I �� �// ✓I// CONTROL PLAN
�I, j•,`I �-- /f------------------------- -- \\ --------- FLOW(ESTIMATED
W FT AREA RESTRICT O \ I \ / \ \ \/I I
`\ `/ ____.(j,PPROX.190 FT -_ % ( CONCRETE WASHOUT CW SHEET C5.1
�, -------X270.7
a `% �, \ 1`--------1----- -------------- ---- \
C5.0
yj 1 PROPOSED SLIP LINE SITE PLAN 0 10, 20. 40' 2 SHORELINE FORTIFICATION PLAN 0 150, 300•
U SCALE:1"=20' SCALE:V=150'
j( SHEET 7 OF 8

Steel Fence Poet
NOTES:APPLICABLE AT ALL POINTS OF M.Fence
NOTES. INGRESS do EGRESS UNTIL SITE IS UM
F°br` CD COFFERDAM
a. RAD.R D r Q OABALLAsRSURGE STONE SHALL STABILIZED, FREQUENT CHECKS OF NOraware Cloth Dn crouna
AAT
BE USED. PAD TO BE 50'L X 20'W X 6" THE DEVICE AND TIMELY
D AT A MINIMUM. MAINTENANCE MUST BE PROVIDED.
Finer or I•D;.—It.,.r BOTTOM DRAIN INVERT ELEV.=273.0 A.MORT AND ASSOCIATES,INC.
COG ENGINEERS
b.TURNING RADIUS SUFFICIENT TO wo.hee stone 100 GATEWAY CENTRE PARKWAY,SUITE 200
ACCOMMODATE LARGE TRUCKS IS TO BE TOP OF COFFERDAM RICHMOND,VA 23235
PROVIDED. TEMPORARY CONNECTION ELEV.=275.0 PHONE[phone]
Bury Wine Fence one Hardware Cloth II TO EXISTING OUTLET DRAIN EMAIL:[e-mail]
c. ENTRANCE(S)SHOULD BE LOCATED TO 11 112"VALVE
PROVIDE FOR MAXIMUM UTILITY BY ALL CONSTRUCTION VEHICLES. II SECTION INVERT=273.2 4'-0"±
�Qu'60 860 860860860 860 860 960 8
d.MUST BE MAINTAINED IN A CONDITION �" 6 �8 � 6 12"WATER PIPE
WHICH WILL PREVENT TRACKING OR (n" 608b0 86 2 2
DIRECT FLOW OF MUD ONTO STREETS. $o°B`g$ U6 1 1 MAX LOWERED
PERIODIC TOPDRESSING WITH STONE $$eg$ 86 ---------
IT
17�% 4ri
SILL BE NECESSARY; KEEP SOME HANDY. dOa6o 86 �--��- FLOW POOL=273.2
'WN cmc
R.60860 86 --------- n
e.ANY MATERIAL WHICH STILL MAKES IT 60800060 86
ONTO THE ROAD MUST BE CLEANED UP 860860�00860 0 �a - MIN LOWERD
IMMEDIATELY. O'o po 608bo� O� c ��o 0 POOL=271.00
0 0
6•MIN
SIR F.D.. EXISTING GRADE",
PLANT
RAILRDAD BALLAST ORSLRGE STONE
O � 4•MID.
CE
NOT TO SCALE N CAR
kERoN corrraoL DETA[L ` (HAM couNTY,Nc CONC.SIDE WALLCLEARED OUT ONCE THE DEPTH CONSTRUCTION ENTRANCE DArL ID OUTLET PROTECTION REACHES HALF THE HEIGHT OFEERING DEPARTMENT THE PROTECTION(±1 FT) - = 0,4/0215
CONC.SILL 1'-0" 2'-0" !G NEG5�
°G MAX — RUNOFF WATER
r° V An A WITH SEDIMENT ;n
or Ste F Al Muec FRONT MEW OVERFLOW
Be o.e.Ot L. t 1'Al—
SA-1 FDO theII
or the
Stone f Bury wire Fenw, a a
Fllter.nd REPAIR NIH DAM
() FLOW OF WATER and H.bft e e ' 2 2
I I I T E s1a'O z�R'wE Steel Fence Poet Sal Max.2' art a
"ER,�,m`"""NEB ON AP aoLn� Trench a iv FILTERED WATER
INLETS AND OUTLETS
OLTw.�aLErE Es wart(BIALN)wRR aAM � TASK ORDER C1OO809
GDNA NT=EGDRED TD wRE ,r DAM INVENTORY#DURHA-105
w/unAE cEPs art w RE AT e•ITF :�,s `°/ ��'` EROSION CONTROL DETAIL
M 4 a d
OR
TO INCREASE STORAGE CAPACITY AND c ER. (p'p�0 j DURHA.\I COUNTY,INC SELT FENCE OUTLET � d d
PROLONG THE LIFE OF THE SILT FENCE,IT ENGINEERING DEPARTMENT FEDERAL NID#NC01Efi�
IS GENERALLY APASABLE TO DIG A I ^c'^ ATE w NO.3 STONE DURHAM COUNTY,NC
SEDIMEM PR IN FRONT OF TIE SILTSEDIMENT
FENCE WHENEVER POSSIBLE. NPx.SEDIMFM SRIRAGE IEVEL.REMOK 01.D9 SF-1
SEDIMENT WHEN THB­E_IS RUWED OR MIRAFI 110ON OR EQ.
AS oIRE—. SURFACE OF CONCRETE
OUTLET SLAB NO.57 STONE
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER PERMIT SET
-ERR(0 eDL.TAMP
.EETWJN,C£(IX B<NR
6HEET DILY) GENERAL EROSION AND SEDIMENT CONTROL NOTES
- NAnRAL GRADE
10
GARRr APPRox.l2•or—1.NN To-1. A
0 C-) c D CD 0 SANDBAGS TVP.) ES-1: UNLESS OTHERWISE INDICATED,ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED
' OR STAPLES ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE NORTH CAROLINA EROSION&SEDIMENT PLANNING AND DESIGN MANUAL EDITION 2013.
F CJRRt'6.OF ARE INN TRENCH. i 0 0 10 MIL
Posts AT 1oro.c.MAIL. 4 D 1:1 PLASTIC SANDBAGS rtYP.) ES-2: THE LOCAL AUTHORITY HAVING JURISDICTION SHALL BE NOTIFIED OF THE PRE-CONSTRUCTION CONFERENCE. LOCAL AUTHORITIES HAVING JURISDICTION WILL sm>
0 0
C IDE SLOPE LINING OR STAPLES
S F b S(TYP_) MAKE A CONTINUING REVIEW AND EFFECTIVENESS OF THE METHODS AND EFFECTIVENESS OF THE EROSION CONTROL PLAN.
Z
NOT TO SCALE 0 CD O 0 1�K ES-3: ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING,GRADING,ORLAND DISTURBANCE.
> b NATIONAL INSTITUTES OF HEALTH
2 ,d"`�. EROSION CONTROL DETAIL
a ENGDURHAMURHAM
INEERING RING DEPAR'NCTMENT TEMPORARY SILT FENCE A ES-4: ALL EXISTING EROSION CONTROL MEASURES WHICH SERVE THIS SITE SHALL REMAIN IN PLACE AND SHALL BE MAINTAINED UNTIL THE AREAS THEY SERVE HAVE 111 T.W.ALEXANDER DRIVE
BEEN STABILIZED. DURHAM,NC 27709
1. - [phone]
CLEARLY MARKED SIGNAGE SECTION A-A ES-5: ALL STREETS AND ROADWAYS SHALL BE MAINTAINED FREE OF MUD AND DIRT,AND CONTROL DUST AS NECESSARY.
N CONCRETE NOTING DEVICE(18•X24•MIN.)
n WASHOUT NOTES. MARK DATE DESCRIPTION
1.ACTUAL LOCATION DETERMINED IN FIELD ES-6: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES.
w
2.THE CONCRETE WASHOUT STRUCTURES SHALL BE ES-7: PROVIDE ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE LOCAL AUTHORITY
U'- MAINTAINED WHEN THE LIQUID AND/OR SOLID REACHES
0 rA..eLE a 75%OF THE STRUCTURES CAPACITY. HAVING JURISDICTION.
TREE p.aTEcnaN w+u 3.CONCRETE WASHOUT STRUCTURE NEEDS TO BE
c PLAN CLEARV MARKED WITH SIGNAGE NOTING DEVICE. ES-8: ALL DISTURBED AREAS SHALL DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND-DISTURBING ACTIVITIES AND DURING SITE
�.n DO NOT ENrm DEVELOPMENT.
ww BELOW GRADE WASHOUT STRUCTURE
I NOT TO SCALE ES-9: DURING DE-WATERING OPERATIONS,WATER SHALL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
0 0 = _ = - Ir�tl� II 111111=L1I=4 _ ES-10: INSPECT ALL EROSION CONTROL MEASURES DAILY AND AFTER EACH RUNOFF PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO
10'-W IN. SANDBAGS(ryp.) MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY.
TUT) CIGH
B "SECTIONB-B
STAPLES
B LOW FILTRATION H
p 4 pr d�xbE.�o,ry�•" SOIL BERMGO
ES-11: PRIOR TO ANY LAND DISTURBING ACTIVITIES THE CONTRACTOR SHALL DESIGNATE A RESPONSIBLE LAND DISTURBER(RLD)TO THE DEPARTMENT OF ENVIRONMENTAL
COH
0 O O O D FILVTRATION AND NATURAL RESOURCES(DENR)IN ACCORDANCE WITH THE NORTH CAROLINA SEDIMENTATION POLLUTION CONTROL ACT OF 1973.
m L BERM
Z FRONT VIEW O i 0 O MAINTENANCE
W E T 4 0 0 ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CHECKED DAILY AND AFTER EACH RUN OFF PRODUCING RAINFALL.THE FOLLOWING ITEMS SHALL BE
"ELL 0 D PROJECT NO: 22-0363.001
CHECKED IN PARTICULAR:WARNING SIGN DETAIL OCD - SCALE: AS SHOWN
w SIDE VIEW A. THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR FLOW OF MUD ONTO PUBLIC RIGHTS-OF-WAY. THIS MAY REQUIRE DESIGNED BY: DAK
W NOTESr
g .®.e vEr.EEn B PERIODIC TOP DRESSING WITH ADDITIONAL STONE OR THE WASHING AND REWORKING OF EXISTING STONE AS CONDITIONS DEMAND AND REPAIR AND/OR
CLEANOUT OF ANY STRUCTURES USED TO TRAP SEDIMENT. ALL MATERIALS SPILLED DROPPED WASHED,OR TRACKED FROM VEHICLES ONTO ROADWAYS ON DRAWN BY: KHH
.eNnw,E,��ss m..w..� wIp*rc.xw x�c SANDBAGS STB�AG�y{TYP.) No1Es: INTO STORM DRAINS MUST BE REMOVED IMMEDIATELY.THE USE OF WATER TRUCKS TO REMOVE MATERIAL DROPPED,WASHED,OR TRACKED ONTO ROADWAYS CHECKED BY: DJR
W 1.ACTUAL LOCATION DETERMINED IN FIELD WI ILL NOT BE PERMITTED UNDER ANY Cl RCUMSTANCES.
O SHEET TITLE
CLEARLY MARKED SIGNAGE 2.THE CONCRETE WASHOUT STRUCTURES B. THE SILT FENCE BARRIER SHALL BE CHECKED FOR UNDERMINING OR DETERIORATION OF THE FABRIC.SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF
w.u.s.N.T uw Ew of ue...xEE wro,Ecrlw w.wwRA.w.»xw<roc OHO CONCRETE NOTING DEVICE(18•X24•MIN.) SHALL BE MAINTAINED WHEN THE LIQUID SEDIMENT DEPOSITION REACHES HALF WAY TO THE TOP OF THE BARRIER.ALL DAMAGES SHALL BE REPAIRED IMMEDIATELY.
p w'ABT AND/OR SOLID REACHES 75%OF THE C. SEEDED AREAS SHALL BE CHECKED TO ENSURE THAT A GOOD STAND IS MAINTAINED.AREAS SHALL BE FERTILIZED AND RESEEDED AS NEEDED.
Area pen Prpte«bp T STRUCTURES CAPACITY TO PROVIDE EROSION AND SEDIMENT
♦r ADEQUATE HOLDING CAPACITY WRHA D. ALL MULCHES AND SOIL COVERINGS SHOULD BE INSPECTED PERIODICALLY TO CHECK FOR EROSION. WHERE EROSION IS OBSERVED N MULCHED AREAS,
c =T=T=T Pro°I"M°E"I"'r I MINIMUM 12 INCHES OF FREEBOARD. ADDITIONAL MULCH SHOULD BE APPLIED. NETS AND MATS SH OUDL BE INSPECTED AFTER RAINSTORMS FOR DISLOCATION OR FAILURE. IF WASHOUTS OR
BREAKAGE OCCUR,RE-INSTALL NETTING OR MATTING AFTER REPAIRING DAMAGE TO SLOPE OR DITCH. INSPECTIONS SHOULD TAKE PLACE UP UNTIL GRASSES ARE
3.CONCRETE WASHOUT STRUCTURE NEEDS CONTROL NOTES AND
TP WARNING SIGN DETAIL PLAN TO BE CLEARY MARKED WITH SIGNAGE FIRMLY ESTABLISHED
-IN NOTING DEVICE. E. CONCRETE WASHOUT FACILITIES SHOULD BE INSPECTED DAILY AND AFTER HEAVY RAINS TO CHECK FOR LEAKS. WHEN THE WASHOUT CONTAINER IS FILLER TO DETAILS
it ABOVE GRADE WASHOUT STRUCTURE OVER 75%OF IT'S CAPACITY,THE WASHWATER SHOULD BE VACUUMED OFF OR ALLOWED TO EVAPORATE TO AVOID OVERFLOWS.THEN WHEN THE REMAINING
EROSION CONTROL DETAIL NOT TO SCALE CEMENTITIOUS SOLIDS HAVE HARDENED,THEY SHOULD BE REMOVED AND RECYCLED.DAMAGES TO THE CONTAINER SHOULD BE REPAIRED IMMEDIATELY.PRIOR
DO
Q .� ENG EINEAM COUNTY,NCDEPARTMENT TREE PROTECTION DETAIL TO RAIN EVENTS,THE CONTAINER'S LIQUID LEVEL SHOULD BE LOWERED OR TH E CONTAIN ER SHOU LD BE COVERED TO AVOI D AN OVERFLOW.
DAre
I_ 41rop re-I
5. 1
U
j( SHEET 8 OF 8