Drawings amendment 2.pdf

PDF 2 MB Posted

Attached to
Pajaro PL 84-99 Site 3 Repair
Solicitation number
W912P723B0011
Issued by

About this file

This document package includes construction drawings and specifications for repair work on a federal levee project. The project involves repairing damages to the Left Bank levee along the Pajaro River in Monterey County, California under Solicitation Number W912P723B0011. Repairs are needed at Site 3 of the levee and will include restoring the levee crest elevation, rebuilding the levee toes, repairing an existing 60-inch culvert, placing rock slope protection, and conducting isolated slope repairs. The work limits, haul routes, construction staging areas, and alignment controls are delineated on the drawings. Specifications require complying with permits, conducting biological and archaeological surveys, implementing erosion and sediment controls, and restoring sites after project completion. Bidders should verify repair locations and access routes with the Contracting Officer prior to conducting work.

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Text version

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GENERAL NOTES

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G-002

SURVEY CONTROL

AB AGGREGATE BASE

APPROX APPROXIMATE

BEG BEGINNING

BOF BOTTOM OF FOOTING

CENTERLINE

CIP CAST-IN-PLACE

CO CONTRACTING OFFICER

CONC CONCRETE

DIA/Ø DIAMETER

DR DRIVE

(E) EXISTING

E EASTING

EA EACH

EG EXISTING GRADE

EL ELEVATION

EP EDGE OF PAVEMENT

FG FINISHED GRADE

FT FOOT/FEET

H/HORIZ HORIZONTAL

HDPE HIGH DENSITY POLYETHYLENE

HWY HIGHWAY

IN INCH/INCHES

INV INVERT

LAT LATERAL

LB LEFT BANK

LF LINEAR FEET

LT LEFT

MAX MAXIMUM

MCWRA MONTEREY COUNTY WATER RESOURCE AGENCY

MHHW MEAN HIGHER HIGH WATER

MHW MEAN HIGH WATER

MIN MINIMUM

MLLW MEAN LOWER LOW WATER

MLW MEAN LOW WATER

MSL MEAN SEA LEVEL

N NORTHING

N/A NOT APPLICABLE

NAD 83 NORTH AMERICAN DATUM OF 1983

NAVD 88 NORTH AMERICAN VERTICAL

DATUM OF 1988

NGS NATIONAL GEODETIC SURVEY

N.I.C NOT IN CONTRACT

NO NUMBER

NPDES NATIONAL POLLUTANT DISCHARGE

ELIMINATION SYSTEM

NTS NOT TO SCALE

OFF OFFSET

OG ORIGINAL GRADE

PID PERMANENT IDENTIFIER

PIP PROTECT IN PLACE

R RADIUS

RB RIGHT BANK

RC REINFORCED CONCRETE

RD ROAD

RSP ROCK SLOPE PROTECTION

SL SLOPE

CA SPC CALIFORNIA STATE PLANE COORDINATE

STA STATION

TYP TYPICAL

U.O.N. UNLESS OTHERWISE NOTED

V/VERT VERTICAL

W/ WITH

W/O WITHOUT

PROPOSED LEVEE REPAIR

EXISTING GROUND

CONSTRUCTION STAGING AREA

EXISTING CONTOUR (POST-STORM)

ABBREVIATIONS

CL

MLLW ELEVATION

EXISTING CONTOUR (PRE-STORM)5

1. HORIZONTAL DATUM IS NAD 83, CALIFORNIA STATE PLANE

COORDINATE SYSTEM, ZONE IV, U.S. FEET (GEOID 18).

2. VERTICAL DATUM IS NAVD 88.

3. ALL UNITS ARE IN U.S. FEET.

4. TOPOGRAPHIC CONTOURS INDICATE THE GENERAL CONDITIONS AT

TIME OF SURVEY. EXISTING CONTOUR SURFACE IS SOURCED FROM

SURVEYS CONDUCTED ON MAY 2023 AND NOVEMBER 2019.

5. RIGHT BANK AND LEFT BANK ARE REFERENCED LOOKING

DOWNSTREAM.

6. PERFORM ALL WORK IN A MANNER THAT COMPLIES WITH ALL

PERMITS AND IS PROTECTIVE OF THE ENVIRONMENT, INCLUDING AIR

AND WATER QUALITY, WILDLIFE, VEGETATION AND HUMAN HEALTH.

7. PRIOR TO GRANTING ACCESS AND RIGHTS TO OCCUPY PERMISSIONS,

CONTRACTOR MUST SUBMIT WORK PLANS FOR REVIEW AND

APPROVAL, AS DESCRIBED IN SPECIFICATIONS. CONTRACTOR TO

OBTAIN REQUIRED PERMITS.

8. MARK CONSTRUCTION LIMITS OF WORK IN THE FIELD AND HAVE

CONSTRUCTION LIMITS OF WORK APPROVED BY THE CONTRACTING

OFFICER PRIOR TO THE START OF WORK.

9. ONLY OPERATE EQUIPMENT ON APPROVED ACCESS ROUTES AND

WITHIN CONSTRUCTION WORK LIMITS INDICATED ON THE DRAWINGS.

CONFIRM THE ACCESS ROUTES WITH THE CONTRACTING OFFICER

PRIOR TO MOBILIZATION.

10. BECOME FAMILIAR WITH AND OBEY WORK REGULATIONS INCLUDING

SAFETY, FIRE, TRAFFIC, AND SECURITY REGULATIONS. KEEP WITHIN

THE LIMITS OF THE WORK AND AVENUES OF INGRESS AND EGRESS.

COMPLY WITH EM 385-1-1 FOR SAFETY REQUIREMENTS TO INCLUDE

PERSONAL PROTECTIVE EQUIPMENT.

11. WORK SHALL NOT BE PERFORMED ON DAYS THE NATIONAL WEATHER

SERVICE FORECASTS 0.1 INCH OR MORE OF RAIN IN 24 HOURS.

AHEAD OF THESE RAIN EVENTS AND NO LATER THAN THE DAY PRIOR,

THE CONTRACTOR SHALL IMPLEMENT A WORK STOPPAGE PLAN.

WORK STOPPAGE INCLUDES THE COMPLETION OF WORK OR

PLACEMENT OF TEMPORARY MEASURES FOR PARTIALLY COMPLETED

WORK. TEMPORARY MEASURES INCLUDE EROSION CONTROL,

SEDIMENT CONTROL, AND OTHER PROTECTIVE MEASURES.

TEMPORARY MEASURES SHALL BE STORED ONSITE AND AVAILABLE

AT ALL TIMES. WORK STOPPAGE ALSO INCLUDES THE REMOVAL OF

DIVERSIONS WHEN THE NATIONAL WEATHER SERVICE FORECASTS

HIGH WATER OR WHEN DIRECTED BY THE CONTRACTING OFFICER.

12. RAIN THAT LEADS TO THE REQUIREMENT TO REMOVE DIVERSIONS

SHALL BE CONSIDERED UNANTICIPATED CONDITIONS. DAMAGE TO

PROJECT CONSTRUCTION WORK SUSTAINED BECAUSE OF A RAIN

EVENT SHALL BE CONSIDERED UNANTICIPATED.

13. IMMEDIATELY ON DISCOVERY OF THE NEED FOR INTERPRETATION OF

THE CONTRACT DOCUMENTS, THE CONTRACTOR SHALL PREPARE

AND SUBMIT A REQUEST FOR INFORMATION (RFI) FOR CLARIFICATION.

14. REGULAR WORKING HOUR RESTRICTIONS ARE PROVIDED IN

SPECIFICATIONS, WORK OUTSIDE OF REGULAR WORKING HOURS AND

ON FEDERAL HOLIDAYS REQUIRE APPROVAL FROM THE

CONTRACTING OFFICER.

15. CONTACT UNDERGROUND SERVICE ALERT NORTH AT 811-642-2444 A

MINIMUM OF 2 WORKING DAYS PRIOR TO THE START OF EXCAVATION

TO MARK EXISTING UTILITIES. EXISTING UTILITIES THAT INTERFERE

WITH WORK ARE TO BE PROTECTED AS REQUIRED AND KEPT IN

SERVICE AT ALL TIMES.

16. IMMEDIATELY NOTIFY THE CONTRACTING OFFICER AFTER ALL SPILLS,

REGARDLESS OF QUANTITY, INCLUDING ALL PERSONNEL

EXPOSURES. THE CONTRACTOR SHALL SUBMIT A WRITTEN

NOTIFICATION NO LATER THAN 7 CALENDAR DAYS AFTER THE INITIAL

NOTIFICATION.

17. SPILL KITS SHALL BE STORED AT EACH REPAIR SITE AND

LAYDOWN/STAGING AREA AND AVAILABLE AT ALL TIMES.

18. LAYDOWN/STAGING AREAS WITHIN 100 FEET OF WATERWAYS SHALL

INCLUDE SECONDARY CONTAINMENT FOR VEHICLE AND EQUIPMENT

FUELING AND MAINTENANCE.

19. VEHICLE AND EQUIPMENT FUELING AND MAINTENANCE SHALL TAKE

PLACE AT LAYDOWN/STAGING AREAS WHICH MUST INCLUDED

CONTAINMENT MEASURES TO PROTECT AGAINST POTENTIAL

DISCHARGE OF FLUIDS TO WATERWAYS.

20. VEHICLE AND EQUIPMENT SHALL BE CHECKED BEFORE THEY ARE

USED FOR THE FIRST TIME, AND THEN DAILY FOR FUEL, OIL, AND

HYDRAULIC FLUID LEAKS OR OTHER PROBLEMS THAT COULD RESULT

IN SPILLS OF TOXIC MATERIALS.

21. VEHICLE, EQUIPMENT, MATERIAL, AND TEMPORARY CONSTRUCTION

FACILITIES AND CONTROLS SHALL BE REMOVED FROM THE REPAIR

SITE WHEN WORK IS COMPLETE.

22. MATERIAL NOT ACTIVELY IN USE SHALL BE COVERED AND

SURROUNDED BY AN APPROPRIATE SEDIMENT BARRIER.

23. IN ALL AREAS WHERE PROJECT RELATED ACTIVITIES OCCUR, THE

CONTRACTOR SHALL RETURN THE EASEMENTS, ACCESS POINTS AND

PROVIDED LAYDOWN/STAGING AREAS TO THEIR ORIGINAL

PRE-PROJECT CONDITIONS PRIOR TO VACATING THE SITE.

24. DURING THE COURSE OF THE PROJECT, THE COUNTY OF MONTEREY,

PROPERTY OWNERS, AND ITS AUTHORIZED REPRESENTATIVES SHALL

BE PROVIDED ACCESS TO THE COUNTY EASEMENTS, COUNTY

ACCESS POINTS AND COUNTY-PROVIDED LAYDOWN/STAGING AREAS

AT ALL TIMES IN ORDER TO CONDUCT THE COUNTY'S NORMAL

BUSINESS ACTIVITIES.

25. LEVEE MAINTENANCE ROADS THAT BECOME RUTTED,

CONTAMINATED, CRUSHED OR OTHER WISE DAMAGED BY PROJECT

CONSTRUCTION SHALL BE REPAIRED. REPAIR SHALL CONSIST OF

REMOVAL OF 3 INCHES OF SOIL OR AGGREGATE AND REPLACEMENT

WITH COMPACTED CLASS 2 AGGREGATE BASE (2022 CALTRANS

STANDARD). THE CONTRACTING OFFICER SHALL DETERMINE

DAMAGED MAINTENANCE ROAD REQUIRING REPAIR.

26. SURVEYS FOR THE PRESENCE OR THE ABSENCE OF CALIFORNIA

RED-LEGGED FROGS ARE REQUIRED WITHIN THE CONSTRUCTION

LIMITS OF WORK. SURVEYS SHALL BE PERFORMED AT THE REPAIR

SITE BY A QUALIFIED BIOLOGIST DAILY, PRIOR TO THE START OF

DAILY WORK. THE QUALIFIED BIOLOGIST SHALL HAVE A MINIMUM OF

10 YEARS OF EXPERIENCE WITH CALIFORNIA RED-LEGGED FROGS

AND BE APPROVED BY THE CONTRACTING OFFICER. DAILY WORK MAY

COMMENCE IN THE ABSENCE OF CALIFORNIA RED-LEGGED FROGS. IF

CALIFORNIA RED-LEGGED FROGS ARE FOUND, IMMEDIATELY NOTIFY

THE CONTRACTING OFFICER.

27. DEWATERING AND DIVERSIONS SHALL BE DESIGNED TO HAVE THE

MINIMUM NECESSARY IMPACTS TO WATERS OF THE STATE AND

INSTALLED SUCH THAT DIVERSIONS DO NOT CAUSE SEDIMENTATION,

SILTATION, OR EROSION UPSTREAM OR DOWNSTREAM OF THE

PROJECT AREA. DEWATERING AND DIVERSIONS SHALL BE

IMMEDIATELY REMOVED UPON COMPLETION OF WORK, AND IN SUCH

A WAY AS TO NOT CAUSE A SEDIMENT DISCHARGE OR EROSION.

28. SURVEYS FOR THE PRESENCE OR THE ABSENCE OF SOUTH-CENTRAL

CALIFORNIA COAST STEELHEAD ARE REQUIRED. SURVEYS SHALL BE

PERFORMED AT REPAIR SITE #3 BY A QUALIFIED BIOLOGIST DAILY,

DURING DEWATERING ACTIVITIES. THE QUALIFIED BIOLOGIST SHALL

HAVE EXPERIENCE WITH SOUTH-CENTRAL CALIFORNIA COAST

STEELHEAD AND BE APPROVED BY THE CONTRACTING OFFICER.

DAILY WORK MAY COMMENCE IN THE ABSENCE OF SOUTH-CENTRAL

CALIFORNIA COAST STEELHEAD. IF SOUTH-CENTRAL CALIFORNIA

COAST STEELHEAD ARE FOUND, IMMEDIATELY NOTIFY THE

CONTRACTING OFFICER.

29. SURVEYS FOR THE PRESENCE OR THE ABSENCE OF TIDEWATER

GOBY ARE REQUIRED. SURVEYS SHALL BE PERFORMED AT REPAIR

SITE #3 BY A QUALIFIED BIOLOGIST DAILY, DURING DEWATERING

ACTIVITIES. THE QUALIFIED BIOLOGIST SHALL HAVE EXPERIENCE

WITH TIDEWATER GOBY AND BE APPROVED BY THE CONTRACTING

OFFICER. DAILY WORK MAY COMMENCE IN THE ABSENCE OF

TIDEWATER GOBY. IF TIDEWATER GOBY ARE FOUND, IMMEDIATELY

NOTIFY THE CONTRACTING OFFICER.

LEGEND

DOWNSTREAM DIRECTION OF FLOW

COMPACTED FILL

EXISTING ROCK SLOPE PROTECTION

FLOOD-FIGHT MATERIAL

EXCAVATE/DEGRADE/REMOVE

PROPOSED LEVEE CREST

PROPOSED LEVEE TOE

CONSTRUCTION LIMITS OF WORK

LEVEE CONTROL LINE

EXISTING LEVEE CREST

EXISTING LEVEE TOE

SLOPE INDICATOR

FINISHED GRADE CONTOUR5

PROPOSED LEVEE

WATERSIDE SLOPE REPAIR

EXISTING ELECTRICAL CONDUITE

AM

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CONSTRUCTION LIMITS OF WORK

SEE G-004

TR

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ON R

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THURW

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BEACH RD

LEE RD

STA

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RO

MONTEREY BAY

W RIVERSIDE DR

SAN ANDREAS RD

INDUSTRIAL RDW BEACH ST

WATSONVILLE

WASTEWATER

TREATMENT

PLANT

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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G-003

HAUL ROUTE PLANA1 SCALE: 1"=1000' 1000'1000' 0' 2000'

GRAPHIC SCALE

PLAN

NORTH

AM

EN

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JU

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L1

L2

L3

L4

L5 L6

L7

L8

CONSTRUCTION

LIMITS OF WORK

TRAFTON ROAD

(E) DRAINAGE DITCH (PIP)

ACCESS ROAD TO BE

SHARED W/ GROWERS.

SEE NOTE 5

CONTROL

LINE "C"

STAGING AREA (SEE NOTE 4)

ACCESS CONSTRUCTION SITE

THROUGH TRAFTON ROAD

INSTALL DIRECTIONAL

SIGNAGE FOR EGRESS AND

INGRESS OF STAGING AREA

-0+90.70 -0+50 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4+50 5+00 5+50 6+00 6+50 7+00 7+25

(E) PUMP (PIP)

BP

0+

.7

PI

: 0

+0 0.

PI

: 2

+9 3.

PI

: 7

+0 0.

EP

: 7

+2 5.

(E) CULVERT

FLAPGATE AT

OUTLET (PIP)

(E) CULVERT CONC

HEADWALL AT INLET (PIP)

(E) CONCRETE

BLOCKS AND

ACCESS RAMP (PIP)

C3 C4C1 C2

CONSTRUCTION

ACCESS ROAD

(E) DRAINAGE

DITCH (PIP)

(E) DRAINAGE

DITCH (PIP)

(E) ELECTRICAL

CONDUIT (PIP)

E E

E E E E E E E E E

CONSTRUCTION LIMITS OF WORK

LINE #

L1

L2

L3

L4

L5

L6

L7

L8

LENGTH

198.46'

861.50'

198.46'

187.37'

458.74'

57.85'

571.92'

297.71'

DIRECTION

S70° 32' 18.60"W

N19° 27' 41.40"W

N70° 32' 18.60"E

S20° 15' 15.01"E

N74° 21' 50.16"E

S49° 42' 22.13"E

S39° 23' 13.38"W

S19° 27' 41.40"E

START NORTHING

2208332.02

2208265.90

2209078.18

2209144.30

2208968.51

2209092.15

2209054.74

2208612.72

END NORTHING

2208265.90

2209078.18

2209144.30

2208968.51

2209092.15

2209054.74

2208612.72

2208332.02

START EASTING

5742775.055

5742587.938

5742300.909

5742488.026

5742552.892

5742994.655

5743038.779

5742675.866

END EASTING

5742587.94

5742300.91

5742488.03

5742552.89

5742994.66

5743038.78

5742675.87

5742775.05

CONTROL LINE "C"

LINE #

C1

C2

C3

C4

LENGTH

90.70'

293.84'

406.16'

25.00'

DIRECTION

N20° 43' 06.55"W

N19° 11' 48.48"W

N19° 19' 57.90"W

N17° 11' 45.01"W

START NORTHING

2208339.64

2208424.48

2208701.98

2209085.24

START EASTING

5742710.05

5742677.96

5742581.34

5742446.88

END NORTHING

2208424.48

2208701.98

2209085.24

2209109.12

END EASTING

5742677.96

5742581.34

5742446.88

5742439.49

STAGING AREA (SEE NOTE 4)1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

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G-004 CONSTRUCTION STAGING, WORK LIMITS AND ALIGNMENT CONTROLA1 SCALE: 1"=50' 50'50' 0' 100'

GRAPHIC SCALE

PLAN

NORTH

PAJARO RIVER

NOTES:

1. RESTORE SITE TO PRE-CONSTRUCTION CONDITIONS.

2. PROTECT-IN-PLACE ALL EXISTING IMPROVEMENTS.

3. IRRIGATION EQUIPMENT MAY BE DISCONNECTED AND MOVED;

RESTORE TO PRE-CONSTRUCTION CONDITION AT END OF PROJECT.

4. STOCKPILE AND SPREAD EXCESS SOIL OVER STAGING AREA.

MINIMIZE EXCAVATION BELOW EXISTING GROUND SURFACE.

5. GROWERS SHALL USE THE SHARED ACCESS ROAD ONLY ON

WEDNESDAYS AND SATURDAYS.

LIMITS OF HYDROSEED

AND EROSION CONTROL

LIMITS OF ISOLATED

SLOPE REPAIRS.

AM

EN

D

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T

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0+

0+

1+

1+

1+

1+

1+75

1+75

2+

2+

2+

2+

3+

3+

3+

3+

4+

4+

4+

4+

5+

5+

5+

5+

-0 +9

0.

-0 +5

0+

0+

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5+

5+

6+

6+

7+

7+

PLACE 12" RSP AT

CULVERT OUTLET.

SEE DETAIL

REPAIR 60"Ø CMP CULVERT.

CONNECT CULVERT TO CONC

HEADWALL. SEE DETAIL

(E) DRAINAGE DITCH

STA. 0+25

BEG. OF BREACH

STA. 6+00

END OF BREACH

SEE NOTE 5

10 10

(E) CONCRETE

BLOCKS AND

ACCESS RAMP (PIP)

RESTORE

ACCESS RAMP

LIMITS OF HYDROSEED

AND EROSION CONTROL

LIMITS OF ISOLATED

SLOPE REPAIRS.

SEE NOTE 6

APPROXIMATE LIMITS

OF LEVEE DAMAGE.

SEE NOTE 7

(E) LEVEE CREST

20 15

(E) PUMP (PIP)

E E

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(E) CENTERLINE PROFILE

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(N) LEVEE CREST

(N) WATERSIDE

TOE PROFILE

(N) LANDSIDE

TOE PROFILE

BENCH

SEE NOTE 2(E) TOE

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REPAIR SITE #3 - PLANF1 SCALE: 1"=30' 30'30' 0' 60'

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GRAPHIC SCALE VERT

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GRAPHIC SCALE HORIZ

LANDSIDE

PAJARO RIVER

WATERSIDE

NOTES:

1. SEE SHEET C-301 FOR LEVEE

CREST AND TOE ELEVATIONS.

2. BENCH LEVEE TOE IN

ACCORDANCE WITH EM 385-1-1

AND SPECIFICATIONS.

3. CUT (E) TIMBER PILES WITHIN

WORK LIMITS 6" TO 12" BELOW

GRADE PRIOR TO LEVEE

CONSTRUCTION. SEE FIGURE

4. REMOVE 3"Ø PVC PIPE BETWEEN

APPROX STA 2+00 AND 5+00

(APPROX 3 FT. BELOW (E) GRADE,

DEPTH VARIES. CAP ENDS W/ PVC

CAP SCHEDULE 40.

5. SALVAGE 12" DIA RSP ON

FLOODPLAIN BENCH AND PLACE

ON WATERSIDE LEVEE SLOPE

BETWEEN STA 0+23 AND STA 2+00.

REPLACE ANY MISSING RSP

WASHED INTO THE RIVER.

6. ISOLATED, SURFICIAL SLOPE

REPAIRS. LIMITED TO APPROX.

8-FEET WIDE. SEE SHEET C- 503

FOR DETAILS. ASSUME FOUR (4)

REPAIR AREAS FOR BIDDING.

7. CONTRACTOR TO VERIFY REPAIR

LOCATION WITH CONTRACTING

OFFICER PRIOR TO

CONSTRUCTION. SEE GENERAL

NOTES ON SHEET G-002 AND SEE

SHEET C-501 FOR DETAILS.

A1 C-502

G1 C-502

A1 C-501

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T

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(E) ELECTRICAL CONDUIT

ALONG LANDSIDE LEVEE

TOE (PIP)

C-101_Amendment01
G-002_Amendment01
G-003_Amendment01
G-004_Amendment01

File details come from the government source that posted it. Updated .