Crescent_City_FY19_OandM_Plans_15May19.pdf

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C:\Users\L3ET9FS9\Desktop\E-Documents\O&M\Crescent City\FY19\Plans\CAD\ Crescent_City_O&M_2019 (G).dwg 15 May 2019 - 8:41am

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US Army Corps of Engineers

San Francisco District

DEL NORTE COUNTY, CALIFORNIA

CRESCENT CITY HARBOR

MAINTENANCE DREDGING PROJECT

SOLICITATION NO: W912P7-19-B-0006

CONTRACT NO: W912P7-19-C-XXXX

ISSUE DATE: MAY 2019

SUBMITTED BY:

SON T. HA, P.E. DATE

CHIEF, ENGINEERING BRANCH

APPROVED BY:

SUSAN KELLY, P.E. DATE

CHIEF, ENGINEERING AND TECHNICAL SERVICES DIVISION

PREPARED UNDER THE DIRECTION OF:

TRAVIS J. RAYFIELD

LT. COLONEL, C.E., DISTRICT COMMANDER

THIS PROJECT WAS DESIGNED BY THE SAN FRANCISCO DISTRICT OF

THE U.S. ARMY CORPS OF ENGINEERS. THE INITIALS OR SIGNATURES

AND REGISTRATION DESIGNATIONS OF INDIVIDUALS THAT APPEAR

ON THESE PROJECT DOCUMENTS ARE WITHIN THE SCOPE OF THEIR

EMPLOYMENT AS REQUIRED BY ER1110-1-8152.

SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION

AND APPROVAL OF DRAWINGS IN THIS SET.

G-01

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LOCATION MAP

NOT TO SCALE

PROJECT

AREA

WHALER ISLAND

MARINA ACCESS

CHANNEL (NIC)

INNER HARBOR

BASIN CHANNEL

ENTRANCE

CHANNEL

HUMBOLDT OPEN OCEAN

DISPOSAL SITE (HOODS)

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C:\Users\L3ET9FS9\Desktop\E-Documents\O&M\Crescent City\FY19\Plans\CAD\ Crescent_City_O&M_2019 (G).dwg 15 May 2019 - 8:38am

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VERTICAL CONTROL

VERTICAL CONTROL: "B.M. TIDAL 20" 1959 RESET 1960, USC&GS

DISK, 13.46' MLLW, LOCATED AT COORDINATES N2526793.45,

E5965753.79.

HORIZONTAL GPS CONTROL

COAST GUARD D-GPS

2' ALLOWABLE OVERDEPTH

(PAID AND NON-PAID)

EL. 0.00 FEET M.L.L.W.

1' ALLOWABLE (PAID) OVERDEPTH

PROJECT DEPTH

NOTE:

SEE SECTION 35 20 23 DREDGING PARA. 1.5 FOR DETAILS

1' ALLOWABLE OVERDEPTH (NON-PAID)

GENERAL NOTES:

1. BATHYMETRIC SURVEYS PERFORMED BY THE U.S ARMY CORPS OF

ENGINEERS, SAN FRANCISCO DISTRICT ON 19 FEBRUARY 2019 FOR THE

CRESCENT CITY HARBOR.

2. BATHYMETRIC SURVEY SOUNDINGS ARE BASED ON THE DATUM OF MEAN

LOWER LOW WATER (MLLW) AT THE LOCALITY.

3. DRAWINGS ARE NOT TO BE USED AS NAVIGATION CHARTS.

4. INFORMATION SHOWN ON THE DRAWINGS IS BASED ON BATHYMETRIC

SURVEYS MADE ON THE DATES INDICATED AND CAN ONLY BE CONSIDERED

FOR THE GENERAL CONDITIONS EXISTING AT THAT TIME.

5. BATHYMETRIC SURVEY SOUNDINGS WERE TAKEN BY FATHOMETER

(MULTI-BEAM SURVEY EQUIPMENT) AND ARE SHOWN TO THE NEAREST TENTH

OF A FOOT.

6. COORDINATES ARE BASED ON THE CALIFORNIA STATE PLANE COORDINATE

SYSTEM OF 1983 (CCS83), LAMBERT CONFORMAL PROJECTION ZONE I, IN FOOT,

AS DESCRIBED IN SPECIAL PUBLICATION NO. 253, PUBLISHED BY NATIONAL

OCEAN SURVEY.

7. THE PROJECT DEPTH IS -15 FEET MLLW FOR THE INNER HARBOR BASIN.

8. THE PROJECT DEPTH IS -20 FEET MLLW FOR THE ENTRANCE CHANNEL.

9. DISPOSAL SITE: HUMBOLDT OPEN OCEAN DISPOSAL SITE (HOODS) AND

WHALER ISLAND. FOR HOODS LOCATION AND SITE MAP, SEE SPEC SECTION 35

20 24 AND ATTACHMENT 3 AT THE END OF SECTION 35 20 24.

10. AERIAL IMAGE COURTESY OF ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR

GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEX, GETMAPPING, AEROGRID,

IGN, IGP, SWISSTOPO, AND THE GIS USER COMMUNITY.

11. THE LOCATION OF ALL NAVIGATION AIDS ARE BASED ON INFORMATION

PROVIDED BY THE U.S. COAST GUARD. BUOY LOCATION REPRESENTS THE

POSITION OF THE SINKER ONLY.

12. SEDIMENT SAMPLING AND TESTING RESULTS AVAILABLE UPON REQUEST.

13. DURING THE DREDGING OF THE INNER HARBOR BASIN WITH DISPOSAL AT

HOODS, THE CONTRACTOR SHALL ADHERE TO THE EPA OCEAN DISPOSAL

SPECIAL CONDITIONS FOR THE USE OF HOODS IN SECTION 35 20 24 OF THE

SPECS.

SHEET SHEET

NUMBER ID DESCRIPTION

01 G-01 COVERSHEET

02 G-02 SCHEDULE OF DRAWINGS, GENERAL NOTES AND

TYPICAL DREDGING SECTION

03 G-03 PROJECT REFERENCE SUMMARY

04 C-01 DREDGING PLAN

SCHEDULE OF DRAWINGS

TYPICAL DREDGING SECTION

NOT TO SCALE

MATERIAL TO BE DREDGED (PAID)

NO DREDGING ON SIDE SLOPES

(SEE NOTE BELOW)

EXISTING CHANNEL BOTTOM

SIDE-SLOPE PRISM

CHANNEL WIDTH VARIES

SEE PLAN

ABBREVIATIONS:

MLLW MEAN LOWER LOW WATER

NIC NOT IN CONTRACT

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C:\Users\L3ET9FS9\Desktop\E-Documents\O&M\Crescent City\FY19\Plans\CAD\ Crescent_City_O&M_2019 (G).dwg 15 May 2019 - 8:39am

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NOTE:

REFER TO LOCATION MAP ON SHEET G-01 FOR

PROJECT LOCATION.

DD CC

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ENTRANCE CHANNEL

INNER HARBOR BASIN

MARINA ACCESS CHANNEL

(NIC)

400'0' 200'

SCALE: 1" = 200'

600'

PROJECT SITE REFERENCE PLAN

D

MD

STA 22+32

LIMIT OF INNER HARBOR BASIN

AND ENTRANCE CHANNEL

POINT NORTHING EASTING

WA 2,525,073.21 5,966,085.31

WB 2,524,896.90 5,965,838.54

WC 2,524,685.28 5,965,907.57

WD 2,524,831.33 5,966,273.90

WHALER ISLAND DISPOSAL SITE CONTROL POINTS

WA

WB

WC

WD

POINT NORTHING EASTING

A 2,525,702.48 5,965,454.87

B 2,526,287.40 5,965,075.79

C 2,526,428.90 5,964,896.75

D 2,526,387.82 5,964,640.82

E 2,526,417.87 5,964,510.66

F 2,526,320.06 5,964,291.44

G 2,526,002.91 5,964,100.94

H 2,525,555.38 5,964,112.28

J 2,525,550.74 5,964,312.18

K 2,525,949.44 5,964,302.32

L 2,526,163.01 5,964,430.39

M 2,526,207.95 5,964,530.87

N 2,526,142.53 5,964,811.88

P 2,525,845.23 5,965,004.97

Q 2,525,530.41 5,965,208.23

AA 2,524,016.94 5,964,016.64

BB 2,524,024.90 5,964,336.54

CC 2,523,325.11 5,964,353.96

DD 2,523,317.15 5,964,034.06

CHANNEL ALIGNMENT CONTROL POINTS

POINT NORTHING EASTING

MA 2,526,683.00 5,964,340.91

MB 2,526,813.90 5,965,466.85

MC 2,527,049.75 5,965,566.98

MD 2,527,090.90 5,965,533.54

ME 2,527,207.90 5,965,656.54

MF 2,527,102.90 5,965,741.54

MG 2,526,809.28 5,965,617.15

MH 2,526,720.90 5,965,658.54

MJ 2,526,594.90 5,965,569.54

MK 2,526,471.90 5,965,354.54

CHANNEL ALIGNMENT CONTROL POINTS

MK

15.9

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17.1

17.0

16.9

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16.3

16.1

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15.7

15.4

15.1

14.7

.0

.4

.1

.3

.4

.4

.3

.2

.1

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.7

.3

.1

.7

.5

.1

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.7

.3

.9

.5

0+00

5+00

10+00

15+00

20+00

25+00

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C:\Users\L3ET9FS9\Desktop\E-Documents\O&M\Crescent City\FY19\Plans\CAD\ Crescent_City_O&M_2019 (C).dwg 15 May 2019 - 8:55am

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400'0' 200'

SCALE: 1" = 200'

600'

WHALER ISLAND

U.S. COAST GUARD

FACILITY

PELICAN ROCK

EXISTING

BREAKWATER

EXISTING PIER

DREDGING PLAN

CHANNEL TOE, TYP.

LEGEND

-14.0 FEET

-15.0 FEET

-19.0 FEET

-20.00 FEET

-14.0 TO -15.0

-19.0 TO -20.0