B.08.03_W912DR21B0006-0001_9-24-21.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

1. CONTRACT ID CODE PAGE OF PAGES

1 2

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 24-Sep-2021

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912DR21B0006

X 9B. DATED (SEE ITEM 11)

23-Aug-2021

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

Project Title: Dyke Marsh Wetlands Restoration & Stabilization Project Phase 2 North Sill Extension, Alexandria, VA

The purpose of this amendment is to:

1.) Provide Official Responses to Requests for Information (RFI) 2.) Provide permits 3.) Provide List of Site Visit Attendees 4.) Provide Final As-Built Drawings, August 2020 5.) Provide Updated Window Table 6.) Provide Stone Sill Detail Sheet

All other terms and conditions remain unchanged.

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

24-Sep-2021

CODE

USACE, BALTIMORE

2 HOPKINS PLAZA

BALTIMORE MD 21201

W912DR 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912DR21B0006

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00 10 00 - SOLICITATION

The Issued By organization has changed from

USACE, BALTMORE DISTRICT

2 HOPKINS PLAZA

BALTIMORE MD 21201

to

USACE, BALTIMORE

2 HOPKINS PLAZA

BALTIMORE MD 21201

(End of Summary of Changes)

DYKE MARSH WETLAND RESTORATION & STABILIZATION PROJECT

ALEXANDRIA, VA

Pre‐bid Site Visit

Date/Time: Wednesday September 8, 2021 at 10 AM

Meeting Point: Belle Haven Marina, Alexandria, VA

List of Attendees:

1. James Judkins, Rasco Inc., 703‐643‐2952

2. Vivek Gowda, Copper River., 571‐277‐5249

3. Christopher Graves, C. A Murren & Sons, 703‐895‐0341

4. James Hutton, C. A Murren & Sons, 703‐895‐0341

5. Robert Gallagher‐Thomas, Precon Marine, 757‐513‐5145

6. Robert Franklin, USACE

7. Brent Steury, NPS

8. Thambirajah Saravanapavan, USACE

GEORGE WASHINGTON MEMORIAL PARKWAY

RESTORATION PROJECT

NATIONAL PARK SERVICE

DYKE MARSH, WETLANDS

FAIRFAX COUNTY, VIRGINIA

S O

L I C

T

A

N

F

E

M

D W

B

Y

K

G

R

P

2 3

4 5

U

Z

SHEET

IDENTIFICATION

US Army Corps of Engineers

H

J

V

BALTIMORE DISTRICT

G-000

AutoCAD SHX Text

PLANS FOR

TO ACCOMPANY SPECIFICATIONS INVITATION NO. W912DR-17-B-0016W912DR-17-B-0016

G-001

X

LEGEND

EXISTING MINOR CONTOUR

EXISTING MAJOR CONTOUR

NATIONAL PARK SERVICE PROPERTY BOUNDARY

SUBMERGED AQUATIC VEGETATION (SAV)

2016 BATHYMETRY

2009 BATHYMETRY

SHORELINE SURVEY

SLOPE INDICATOR

POSITION MARKER

TREE LINE

LIMITS OF SUBMERGED AQUATIC VEGETATION (SAV)

DRILL HOLE LOCATION

DILATOMETER LOCATION

PROPOSED CONTOUR

POINT OF INTERSECTION

LIMIT OF DISTURBANCE

CONSTRUCTION BASELINE

INDEX OF DRAWINGS

PLATE NO.

TITLE

FILE & MAP NO.

FILE NAME

SHEET NO.

GENERAL

COVER SHEET

493G-000.DWG

G-000

INDEX, LEGEND, LOCATION AND VICINITY MAP

493G-001.DWG

G-001

GENERAL PLAN

493G-002.DWG

G-002

GENERAL NOTES AND CONSTRUCTION SEQUENCE

493G-003.DWG

G-003

CIVIL

STONE BREAKWATER, PLAN & PROFILE VIEW (1 OF 2)

493C-101.DWG

C-101

STONE BREAKWATER, PLAN & PROFILE VIEW (2 OF 2)

493C-102.DWG

C-102

COBBLE BEACH PLAN (1 OF 2)

493C-103.DWG

C-103

COBBLE BEACH PLAN (2 OF 2)

493C-104.DWG

C-104

9B

REALIGNED SILL PROFILE (1 OF 2)

493C-106.DWG

C-106

9C

REALIGNED SILL PROFILE (2 OF 2)

493C-107.DWG

C-107

STONE BREAKWATER TYPICAL CROSS SECTIONS AND DETAILS

493C-301.DWG

C-301

STONE BREAKWATER CROSS SECTIONS

493C-302.DWG

C-302

BEACH SILL TYPICAL CROSS SECTIONS AND DETAILS

493C-303.DWG

C-303

BEACH SILL CROSS SECTIONS

493C-304.DWG

C-304

POTOMAC

VIRGINIA

WEST VIRGINIA

PENNSYLVANIA

MARYLAND

DELAWARE

VIRGINIA

CHESAPEAKE

BAY

RIVER

MARYLAND

JERSEY

NEW

SMITH IS.

%%UTIDAL DATUM AT WASHINGTON, DC

%%UFOR THE 1983-2001 TIDAL EPOCH*

*TIDAL DATUMS ARE BASED ON PUBLISHED DATA FROM THE NATIONAL OCEAN SERVICE TIDE STATION 8594900 (WASHIINGTON, DC - WASHINGTON CHANNEL.) TIDE STATION IS APPROXIMATLY 7.1 MILES UPSTREAM FROM THE PROJECT SITE

-0.15'

0.00'

1.40'

2.79'

3.02'

MEAN LOWER-LOW WATER (MLLW)

MEAN LOW WATER, PROJECT DATUM (MLW)

MEAN SEA/TIDE LEVEL (MSL/MTL)

MEAN HIGH WATER (MHW)

MEAN HIGHER-HIGH WATER (MHHW)

k p l o

WASHINGTON, D.C.

l

ARLINGTON

k

LOCATION

PROJECT

VICINITY MAP

NOT TO SCALE

LOCATION MAP

NOT TO SCALE

NAVD88

1.25'

NPS

-5

6963000

11887500

SAV

2.0

BALTIMORE

PROJECT

LOCATION

DC

WASH

LOD

MODIFIED/ADDITIONAL SHEETS

Δ

Δ

G-002

Feet

0 200 400

GEORGE WASHINGTON MEMORIAL PKWY.

PRINCE GEORGE'S COUNTY, MARYLAND

BIKE PATH

HOGG ISLAND GUT

HOGG ISLAND

-1

APPROXIMATE LOCATION OF 24" GAS LINES. SEE SHEET G-003 FOR NOTES.

R5

R4

R3

R2

R1

0+00

15+00

18+00

L1

C1

L2

5+00

10+00

L13

MARSH CREATION REFERENCE POINTS

NUMBER

R1

R2

R3

NORTHING

6962862.0

EASTING

11896735.2

LENGTH (FT)

1715.26

868.92

R4

1304.5

R5

1617.6

DIRECTION

N12° 47' 32"E

N24° 28' 44"E

N45° 12' 45"E

N70° 35' 17"E

6964534.7

11897115.0

6963652.8

11897095.3

6963781.0

11897661.1

6963399.7

11898260.9

ALIGNMENT TABLES

NOTES: 1. THE SITE IS TO BE ACCESSED FROM THE RIVER ONLY. REFER TO SITE ACCESS AND STAGING AREA THE SITE IS TO BE ACCESSED FROM THE RIVER ONLY. REFER TO SITE ACCESS AND STAGING AREA NOTES ON SHEET G-003. 2. THE SITE IS CONTAINED WITHIN THE BOUNDARY OF THE NATIONAL PARK SERVICE - GEORGE THE SITE IS CONTAINED WITHIN THE BOUNDARY OF THE NATIONAL PARK SERVICE - GEORGE WASHINGTON MEMORIAL PARKWAY - DYKE MARSH WILDLIFE PRESERVE.

EBB

FLOOD

POTOMAC RIVER

1. STONE BREAKWATER: STONE BREAKWATER: PERMANENT - 0.48 ACRES TEMPORARY - 0.94 ACRES TOTAL - 1.42 ACRES 2. MARSH CREATION AREA: MARSH CREATION AREA: PERMANENT - 6.82 ACRES TEMPORARY - 4.53 ACRES TOTAL - 11.35 ACRES

3. 12FT SCAR: 12FT SCAR: TEMPORARY - 0.70 ACRES NEW MARSH CREATED - 5.45 ACRES

SUBMERGED AQUATIC VEGETATION (SAV) IMPACTS

REMOVE 12 FT SCAR

9/27/17

CHANGE AC

G-003

Q

SURVEY NOTES: 1. A BATHYMETRIC SURVEY WAS CONDUCTED BY THE U.S. ARMY CORPS OF ENGINEERS, BALTIMORE DISTRICT IN A BATHYMETRIC SURVEY WAS CONDUCTED BY THE U.S. ARMY CORPS OF ENGINEERS, BALTIMORE DISTRICT IN MARCH 2016. 2. THE SHORELINE SURVEY WAS CONDUCTED UNDER CONTRACT FOR THE NATIONAL PARK SERVICE BY THE SHORELINE SURVEY WAS CONDUCTED UNDER CONTRACT FOR THE NATIONAL PARK SERVICE BY NORMANDEAU ASSOCIATES INC. IN FEBRUARY 2009. A SHALLOW-WATER SURVEY WAS ALSO CONDUCTED AT THE SAME TIME. 3. LIDAR DATA WAS COLLECTED UNDER CONTRACT FOR THE WEST VIRGINIA UNIVERSITY NATURAL RESOURCE LIDAR DATA WAS COLLECTED UNDER CONTRACT FOR THE WEST VIRGINIA UNIVERSITY NATURAL RESOURCE ANALYSIS CENTER (WVU NARC) IN MARCH 2012. 4. DIFFERENT MARKERS ARE USED TO REPRESENT THE 2016 AND 2009 DATA. REFER TO THE LEGEND ON DIFFERENT MARKERS ARE USED TO REPRESENT THE 2016 AND 2009 DATA. REFER TO THE LEGEND ON SHEET G-001. 5. TOPOGRAPHIC CONTOURS SHOWN ARE A COMPOSITE OF THE LIDAR, BATHYMETRIC SURVEYS, AND SHORELINE TOPOGRAPHIC CONTOURS SHOWN ARE A COMPOSITE OF THE LIDAR, BATHYMETRIC SURVEYS, AND SHORELINE SURVEYS. TOPOGRAPHIC CONTOURS WERE SMOOTHED AND ONLY REPRESENT AN APPROXIMATION OF THE GROUND SURFACE AT THE TIME OF THE SURVEYS. 6. THE CONTRACTOR WILL PERFORM A EXISTING SITE CONDITION SURVEY IN THE WORK AREAS AND ANY AREAS THE CONTRACTOR WILL PERFORM A EXISTING SITE CONDITION SURVEY IN THE WORK AREAS AND ANY AREAS NEEDED FOR SITE ACCESS PRIOR TO THE START OF WORK TO CONFIRM SURVEY DATA SHOWN ON THE PLANS AND TO IDENTIFY ANY CHANGED SITE CONDITIONS.

GENERAL NOTES: 1. ALL HORIZONTAL COORDINATES ARE IN FEET AND REFERENCE THE VIRGINIA NORTH STATE PLAN ALL HORIZONTAL COORDINATES ARE IN FEET AND REFERENCE THE VIRGINIA NORTH STATE PLAN COORDINATE SYSTEM, NORTH AMERICAN DATUM OF 1983 (NAD 83). 2. ALL ELEVATIONS ARE IN FEET AND REFERENCE MEAN LOW WATER (MLW) BASED ON THE 1983 TO 2001 ALL ELEVATIONS ARE IN FEET AND REFERENCE MEAN LOW WATER (MLW) BASED ON THE 1983 TO 2001 TIDAL EPOCH AT EWELL, MARYLAND. A DATUM DIAGRAM IS PROVIDED ON SHEET G-001. 3. THE POTOMAC RIVER AT THE PROJECT LOCATION IS TIDALLY INFLUENCED AND CARRIES WITH IT A THE POTOMAC RIVER AT THE PROJECT LOCATION IS TIDALLY INFLUENCED AND CARRIES WITH IT A SIGNIFICANT SEDIMENT LOAD, VISIBILITY WITHIN THE WATER COLUMN IS LIMITED. 4. THE SUBMERGED AQUATIC VEGETATION (SAV) BEDS SHOWN ARE PRIMARILY HYDRILLA VERTICILLATA AND THE SUBMERGED AQUATIC VEGETATION (SAV) BEDS SHOWN ARE PRIMARILY HYDRILLA VERTICILLATA AND FORM THICK BEDS DURING THE WARMER MONTHS. 5. THE PROJECT SITE FROM ELEVATION 0.00 MEAN LOW WATER TO ELEVATION 4.2 MEAN LOW WATER IS A THE PROJECT SITE FROM ELEVATION 0.00 MEAN LOW WATER TO ELEVATION 4.2 MEAN LOW WATER IS A REGULATED WETLAND. REGULATION AUTHORITIES ARE THE FAIRFAX COUNT WETLANDS BOARD, THE VIRGINIA MARINE RESOURCES COMMISSION (VMRC) AND THE U.S. ARMY CORPS OF ENGINEERS.

GAS LINES: 1. THE PLAN VIEWS SHOW TWO 24" GAS LINES CROSSING THE RIVER. THE GAS LINES WERE CONSTRUCTED IN THE PLAN VIEWS SHOW TWO 24" GAS LINES CROSSING THE RIVER. THE GAS LINES WERE CONSTRUCTED IN 1961 BY WASHINGTON GAS AND ARE STILL IN USE. 2. THE HORIZONTAL LOCATIONS OF THE GAS LINES ARE APPROXIMATE AND BASED ON AS-BUILT DRAWINGS THE HORIZONTAL LOCATIONS OF THE GAS LINES ARE APPROXIMATE AND BASED ON AS-BUILT DRAWINGS PROVIDED BY WASHINGTON GAS. 3. THE VERTICAL LOCATIONS OF THE GAS LINES ARE UNKNOWN. THE GAS LINES WERE CONSTRUCTED THE VERTICAL LOCATIONS OF THE GAS LINES ARE UNKNOWN. THE GAS LINES WERE CONSTRUCTED ON-AVERAGE 10 FT BELOW THE RIVER BOTTOM IN 1961, 4. THE CONTRACTOR IS RESPONSIBLE FOR LOCATING THE TWO GAS LINES AND WILL ESTABLISH A NO THE CONTRACTOR IS RESPONSIBLE FOR LOCATING THE TWO GAS LINES AND WILL ESTABLISH A NO ANCHOR, NO SPUDDING AND AVOIDANCE ZONE PLAN. THE CONTRACTOR WILL SUBMIT THIS AVOIDANCE PLAN TO THE CONTRACTING OFFICER FOR REVIEW AND APPROVAL PRIOR TO COMMENCING ANY WORK. 5. WASHINGTON GAS HAS APPROVED THE STONE BREAKWATER OVER THE GAS LINES, ANY DAMAGE TO THE WASHINGTON GAS HAS APPROVED THE STONE BREAKWATER OVER THE GAS LINES, ANY DAMAGE TO THE GAS LINES BY WORK, MEANS OR METHODS NOT SHOWN ON THESE PLANS OR WITHIN THE SPECIFICATIONS IS THE RESPONSIBILITY OF THE CONTRACTOR.

TIDAL BENCHMARK: 1. TIDAL BENCHMARK IS BENCHMARK GPS 35. TIDAL BENCHMARK IS BENCHMARK GPS 35. 2. LOCATION: DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1990 THE STATION IS LOCATED IN LOCATION: DESCRIBED BY RINKER DETWILER AND ASSOCIATES 1990 THE STATION IS LOCATED IN SOUTHEASTERN FAIRFAX COUNTY, VIRGINIA ABOUT 7.4 MILES NORTHEAST OF THE VILLAGE OF MOUNT VERNON. TO REACH THE STATION FROM THE INTERSECTION OF MOUNT VERNON AND GEORGE WASHINGTON MEMORIAL PARKWAY PROCEED NORTHEAST ALONG THE GEORGE WASHINGTON MEMORIAL PARKWAY 7.4 MILES TO ITS INTERSECTION WITH BELLE HAVEN MARINA AND PICNIC ROAD. TURN RIGHT AND PROCEED EAST ALONG MARINA ROAD 0.2 MILES TO THE STATION ON THE LEFT AT THE POINT OF CURVE NEAR THE END OF THE ROAD. 3. DESCRIPTION: THE STATION IS A STANDARD FAIRFAX COUNTY SURVEY DISK SET IN CONCRETE FLUSH WITH DESCRIPTION: THE STATION IS A STANDARD FAIRFAX COUNTY SURVEY DISK SET IN CONCRETE FLUSH WITH THE GROUND AND IS STAMPED GPS 35 1990. THE STATION IS 4.86 FEET NORTHEAST FROM THE EDGE OF PAVEMENT. 45.73 FEET NORTHEAST OF A 16D NAIL IN THE EAST POLE OF CANOE PARK. 29.78 FEET SOUTHWEST OF A 16D NAIL IN THE TOP OF A TELEPHONE POLE RETAINING WALL, AND 63.45 FEET NORTHWEST OF A CHISELED X IN THE RIM OF A SANITARY SEWER MANHOLE. 4. BENCHMARK ELEVATION IS 4.35 FEET ABOVE MLW FOR THE '83-'01 TIDAL EPOCHBENCHMARK ELEVATION IS 4.35 FEET ABOVE MLW FOR THE '83-'01 TIDAL EPOCH

SITE ACCESS AND STAGING AREA: 1. THE CONTRACTOR IS RESPONSIBLE FINDING SUITABLE OFFSITE FACILITIES FOR STAGING AND STORAGE THE CONTRACTOR IS RESPONSIBLE FINDING SUITABLE OFFSITE FACILITIES FOR STAGING AND STORAGE AREAS AS WELL AS SUITABLE MOORING AND LOADING FACILITIES FOR THE BARGES AND ATTENDING CRAFT. 2. THE CONTRACTOR MAY ESTABLISH TEMPORARY MOORING AND STAGING AREAS ON THE POTOMAC RIVER THE CONTRACTOR MAY ESTABLISH TEMPORARY MOORING AND STAGING AREAS ON THE POTOMAC RIVER WITHIN THE NATIONAL PARK SERVICE BOUNDARIES BUT NOT WITHIN THE SAV BEDS AS SHOWN ON THE PLANS. 3. THE CONTRACTOR MAY UTILIZE THE AREAS WITHIN THE LIMITS OF DISTURBANCE TO MOVE AND THE CONTRACTOR MAY UTILIZE THE AREAS WITHIN THE LIMITS OF DISTURBANCE TO MOVE AND TEMPORARILY MOOR CRAFT. 4. THE NATIONAL PARK SERVICE PROHIBITS TRUCKS ON THE GEORGE WASHINGTON MEMORIAL PARKWAY. A THE NATIONAL PARK SERVICE PROHIBITS TRUCKS ON THE GEORGE WASHINGTON MEMORIAL PARKWAY. A TRUCK IS DEFINED AS ANY VEHICLE IN EXCESS OF 10,000 LBS GROSS VEHICLE WEIGHT. 5. THE NATIONAL PARK SERVICE WILL NOT ALLOW CONSTRUCTION ACCESS TO THE PROJECT FROM THE THE NATIONAL PARK SERVICE WILL NOT ALLOW CONSTRUCTION ACCESS TO THE PROJECT FROM THE GEORGE WASHINGTON MEMORIAL PARKWAY OR THROUGH THE DYKE MARSH WILDLIFE PRESERVE BY LAND. 6. NO STAGING AREA WILL BE PROVIDED ON LAND WITHIN THE DYKE MARSH WILDLIFE PRESERVE. NO STAGING AREA WILL BE PROVIDED ON LAND WITHIN THE DYKE MARSH WILDLIFE PRESERVE. 7. THE PROJECT SITE CAN ONLY BE ACCESSED VIA BOAT OR BARGE. THE PROJECT SITE CAN ONLY BE ACCESSED VIA BOAT OR BARGE. 8. THE CLOSEST MARINA IS BELLE HAVEN MARINA, APPROXIMATELY 1.3 MILES NORTH OF THE PROPOSED THE CLOSEST MARINA IS BELLE HAVEN MARINA, APPROXIMATELY 1.3 MILES NORTH OF THE PROPOSED BREAKWATER. THIS MARINA IS FOR SMALL RECREATIONAL WATERCRAFT ONLY AND IS NOT SUITABLE FOR CONSTRUCTION ACCESS FOR EQUIPMENT OR MATERIALS.

A. STONE BREAKWATER: STONE BREAKWATER: 1. WITH AUTHORIZATION FROM THE CONTRACTING OFFICER (CO) OR THE CONTRACTING OFFICER'S WITH AUTHORIZATION FROM THE CONTRACTING OFFICER (CO) OR THE CONTRACTING OFFICER'S REPRESENTATIVE (COR) BEGIN CONSTRUCTION OF THE STONE BREAKWATER AT IT'S TIE-IN TO EXISTING GROUND STATION 2+00 TO APPROXIMATELY STATION 3+00. 2. ACCESS STONE BREAKWATER TIE-IN TO SHORE FROM THE RIVER ONLY. MAKE REASONABLE ACCESS STONE BREAKWATER TIE-IN TO SHORE FROM THE RIVER ONLY. MAKE REASONABLE EFFORTS TO MINIMIZE NEED TO EXCAVATE AND/OR DISPLACE SOFT RIVER BOTTOM MATERIAL TO ACCESS BREAKWATER TIE-IN. 3. WITH THE 12 INCH ROCK FILLED MARINE MATTRESSES READY, CLEAR AND GRUB EXISTING WITH THE 12 INCH ROCK FILLED MARINE MATTRESSES READY, CLEAR AND GRUB EXISTING VEGETATION AT SHORE TIE-IN ONLY AS NECESSARY TO PLACE THE 12 INCH ROCK FILLED MARINE MATTRESSES LEVEL AND ALIGNED. AVOID EXCESSIVE CLEARING AND GROUND DISTURBANCE. REMOVE EXCAVATED SOIL AND WOODY DEBRIS FROM THE PROJECT SITE IN ACCORDANCE WITH THE SPECIFICATIONS. 4. BEGIN PLACEMENT OF FIRST COURSE OF ONE LAYER OF THE 12 INCH ROCK FILLED MARINE BEGIN PLACEMENT OF FIRST COURSE OF ONE LAYER OF THE 12 INCH ROCK FILLED MARINE MATTRESSES ALONG THE DESIGN ALIGNMENT, STARTING AT THE TIE-IN TO SHORE TAKING CARE NOT TO OVERLAP THE MATTRESSES AND MAINTAIN SPACING REQUIREMENTS. SURVEY MATTRESS HORIZONTAL LOCATION AND VERTICAL ORIENTATION AS WORK PROGRESSES. 5. COMPLETE THE FIRST COURSE OF 12 INCH ROCK FILLED MARINE MATTRESSES OVER ENTIRE COMPLETE THE FIRST COURSE OF 12 INCH ROCK FILLED MARINE MATTRESSES OVER ENTIRE FOOTPRINT OF THE STONE BREAKWATER. 6. SEVEN DAYS AFTER COMPLETION OF THE FIRST COURSE OF 12 INCH ROCK FILLED MARINE SEVEN DAYS AFTER COMPLETION OF THE FIRST COURSE OF 12 INCH ROCK FILLED MARINE MATTRESSES AND WITH AUTHORIZATION FROM THE COR, THE CONTRACTOR WILL SURVEY THE FIRST COURSE OF MATTRESSES TO DETERMINE THE STRUCTURES HORIZONTAL LOCATION AND VERTICAL ORIENTATION. THE CONTRACTOR WILL ASSESS THE HORIZONTAL AND VERTICAL LOCATION OF THE STRUCTURE FOR COMPLIANCE WITH THE PLANS AND SPECIFICATION. IF THE CONTRACTOR DETERMINES THAT THE FIRST COURSE OF ROCK FILLED MARINE MATTRESSES IS NOT IN COMPLIANCE WITH THE PLANS AND SPECIFICATIONS THE CONTRACTOR WILL SUBMIT A MITIGATION PLAN FOR APPROVAL BY THE COR. 7. WITH THE APPROVAL OF THE COR BEGIN PLACEMENT OF SECOND COURSE OF ROCK FILLED MARINE WITH THE APPROVAL OF THE COR BEGIN PLACEMENT OF SECOND COURSE OF ROCK FILLED MARINE MATTRESSES ALONG THE APPROVED ALIGNMENT. MONITOR PLACEMENT OF MATTRESSES TO ENSURE HORIZONTAL ALIGNMENT IS MAINTAINED AND VERTICAL ORIENTATION AND SETTLEMENT IS ACCEPTABLE. COMPLETE INSTALLATION OF SECOND COURSE OF ROCK FILLED MARINE MATTRESSES. 8. UPON APPROVAL BY THE COR START INSTALLATION OF THE REMAINING MATTRESSES TO THE FINAL UPON APPROVAL BY THE COR START INSTALLATION OF THE REMAINING MATTRESSES TO THE FINAL ELEVATION AS SHOWN ON THE PLANS. A MATTRESS MAY ONLY BE PLACED ATOP ANOTHER MATTRESS IF THE UNDERLYING MATTRESS HAS BEEN ALLOWED TO SETTLE FOR SEVEN CALENDAR DAYS. 9. SEVEN CALENDAR DAYS AFTER THE COMPLETION OF THE ROCK FILLED MARINE MATTRESS SEVEN CALENDAR DAYS AFTER THE COMPLETION OF THE ROCK FILLED MARINE MATTRESS STRUCTURE AND WITH AUTHORIZATION FORM THE COR, THE CONTRACTOR WILL SURVEY THE FINAL COURSE OF MARINE MATTRESSES TO DETERMINE THE COMPLETED STRUCTURES HORIZONTAL LOCATION AND VERTICAL ORIENTATION. THE CONTRACTOR WILL ASSESS THE HORIZONTAL AND VERTICAL LOCATION OF THE STRUCTURE FOR COMPLIANCE WITH THE PLANS AND SPECIFICATION. IF THE CONTRACTOR HAS DETERMINES THAT THE STRUCTURE IS NOT IN COMPLIANCE WITH THE PLANS AND SPECIFICATIONS THE CONTRACTOR WILL SUBMIT A MITIG``ATION PLAN FOR APPROVAL BY THE COR. 10. WITH APPROVAL FROM THE COR THE CONTRACTOR WILL IMPLEMENT ANY MITIGATION REQUIREMENTS, WITH APPROVAL FROM THE COR THE CONTRACTOR WILL IMPLEMENT ANY MITIGATION REQUIREMENTS, AND THEN INSTALL THE QUARRY SPALLS LEVELING PAD TO THE FINAL FINISHED LEVEL SURFACE FOR THE ARMOR STONE BREAKWATER AS SHOWN ON THE PLANS. 11. WITH APPROVAL FROM THE COR BEGIN CONSTRUCTION OF THE ARMOR STONE BREAKWATER MAKING WITH APPROVAL FROM THE COR BEGIN CONSTRUCTION OF THE ARMOR STONE BREAKWATER MAKING SURE TO MEET THE LINES AND GRADES AS SHOWN ON THE PLANS. THE CONTRACTOR WILL MONITOR THE STONE BREAKWATER FOR EXCESSIVE SETTLEMENT DURING CONSTRUCTION. INSTALL NAVIGATION OR WARNING BEACONS AND SIGNAGE AS REQUIRED. 12. UPON COMPLETION OF THE ARMOR STONE BREAKWATER AND WITH AUTHORIZATION FROM THE COR UPON COMPLETION OF THE ARMOR STONE BREAKWATER AND WITH AUTHORIZATION FROM THE COR CONDUCT A COMPLETED CONDITION SURVEY OF THE STONE BREAKWATER AND ROCK FILLED MARINE MATTRESSES. 13. SUBMIT THE COMPLETED CONDITION SURVEY OF THE STONE BREAKWATER AND MATTRESSES TO THE SUBMIT THE COMPLETED CONDITION SURVEY OF THE STONE BREAKWATER AND MATTRESSES TO THE COR, AND MAKE ANY REQUIRED ALTERATIONS TO THE STONE BREAKWATER FOR APPROVAL.

B. COBBLE BEACH SILL: COBBLE BEACH SILL: 1. PRIOR TO THE START OF CONSTRUCTION OF THE COBBLE BEACH SILL THE CONTRACTOR WILL DEVELOP PRIOR TO THE START OF CONSTRUCTION OF THE COBBLE BEACH SILL THE CONTRACTOR WILL DEVELOP A COBBLE BEACH SILL AND MARSH CREATION CONSTRUCTION PLAN FOR APPROVAL BY THE COR. THE CONSTRUCTION PLAN WILL HAVE THE WORK START AT THE NORTHERN END AND WORKING SOUTH IN SEGMENTS IN ORDER TO FACILITATE CONSTRUCTION USING AVAILABLE EQUIPMENT WHILE MINIMIZING POTENTIAL LOSS OF CLEAN SOIL FILL OR OTHER MATERIALS. THE CONSTRUCTION PLAN WILL ALSO MONITOR FOR EXCESSIVE SETTLEMENT OF THE ROCK FILLED MARINE MATTRESSES, AND THE MARSH FILL SECTION AND IDENTIFY MITIGATION MEASURES. THE CONTRACTOR WILL NOT OCCUPY THE EXISTING MARSH TO CONDUCT ANY OF THIS WORK. THE CONTRACTOR WILL NOT BE PAID FOR LOST MATERIALS. THE CONSTRUCTION PLAN WILL INCLUDE MEASURES TO BE APPROVED BY THE COR TO CONTAIN AND PROTECT ANY PLACED CLEAN SOIL FILL OR OTHER MATERIALS FROM THE RIVER AT THE END OF EACH WORKING DAY. THE CONSTRUCTION PLAN WILL INCLUDE ADDITIONAL MEASURE TO INSURE CONTAINMENT AND PREVENT LOSS OF MATERIALS WHEN WORK IS ANTICIPATED TO HALT FOR MORE THAN 18 HOURS AND/OR WHEN SUSTAINED SEVERE WEATHER IS PREDICTED. THE CONSTRUCTION PLAN WILL INCLUDE MEANS AND METHODS FOR CLEAN SOIL FILL PLACEMENT, DEWATERING AS NEEDED, AND GRADING TO ACHIEVE THE FINAL STABLE ELEVATIONS AS SHOWN ON THE PLANS. 2. ACCESS COBBLE BEACH SILL FROM THE RIVER ONLY. MAKE ALL EFFORTS TO MINIMIZE NEED TO ACCESS COBBLE BEACH SILL FROM THE RIVER ONLY. MAKE ALL EFFORTS TO MINIMIZE NEED TO EXCAVATE AND/OR DISPLACE SOFT RIVER BOTTOM MATERIAL FOR ACCESS CHANNEL. IF AN ACCESS CHANNEL IS REQUIRED TO APPROACH THE COBBLE BEACH SILL DURING HIGH TIDE, THE ACCESS CHANNEL(S) SHOULD BE ALONG, OR ADJACENT TO THE BEACH SILL ALIGNMENT TO MINIMIZE DISTURBANCE OF THE SOFT RIVER BOTTOM MATERIALS. ESTABLISHMENT OF AN ACCESS CHANNEL(S) WILL BE COORDINATED WITH THE COR TO INSURE MINIMAL DISTURBANCE. 3. WITH AUTHORIZATION FROM THE CONTRACTING OFFICER (CO) OR THE CONTRACTING OFFICER'S WITH AUTHORIZATION FROM THE CONTRACTING OFFICER (CO) OR THE CONTRACTING OFFICER'S REPRESENTATIVE (COR) BEGIN CONSTRUCTION OF THE COBBLE BEACH SILL AT ITS NORTHERN TIE-IN TO EXISTING GROUND STATION 24+00 TO APPROXIMATELY STATION 22+50+/-. 4. WITH THE ROCK FILLED MATTRESSES READY CLEAR AND GRUB EXISTING VEGETATION AT SHORE TIE-IN WITH THE ROCK FILLED MATTRESSES READY CLEAR AND GRUB EXISTING VEGETATION AT SHORE TIE-IN ONLY AS NECESSARY TO PLACE ROCK FILLED MARINE MATTRESSES LEVEL AND ALIGNED. AVOID EXCESSIVE CLEARING AND GROUND DISTURBANCE. REMOVE EXCAVATED SOIL AND WOODY DEBRIS MAY BE RESERVED AND SPOILED LANDWARD (BEHIND) THE BEACH SILL IN THE LOWER ELEVATIONS AND COVERED WITH CLEAN SOIL FILL AS PART OF THE MARSH CREATION. 5. UPON APPROVAL OF THE COBBLE BEACH SILL CONSTRUCTION PLAN, BEGIN PLACEMENT OF THE ROCK UPON APPROVAL OF THE COBBLE BEACH SILL CONSTRUCTION PLAN, BEGIN PLACEMENT OF THE ROCK FILLED MARINE MATTRESSES ALONG THE DESIGN ALIGNMENT, AND IN ACCORDANCE WITH THE CONSTRUCTION PLAN, TAKING CARE NOT TO OVERLAP THE MATTRESSES AND MAINTAIN SPACING REQUIREMENTS. MONITOR MATTRESSES AND/OR COBBLE BEACH SILL FOR EXCESSIVE SETTLEMENT AS WORK PROGRESSES. 6. AFTER ALLOWING FOR SETTLEMENT OF THE MATTRESS IN ACCORDANCE WITH THE CONSTRUCTION PLAN AFTER ALLOWING FOR SETTLEMENT OF THE MATTRESS IN ACCORDANCE WITH THE CONSTRUCTION PLAN BEGIN BUILDING UP COBBLE BEACH SILL. IF THE CONTRACTOR HAS DETERMINED THAT EXCESSIVE SETTLEMENT HAS, OR IS OCCURRING THE CONTRACTOR WILL SUBMIT A MITIGATION PLAN FOR APPROVAL BY THE COR. 7. WITH AUTHORIZATION FROM THE COR BEGIN PLACEMENT OF THE GEOTEXTILE AND CLEAN SOIL FILL WITH AUTHORIZATION FROM THE COR BEGIN PLACEMENT OF THE GEOTEXTILE AND CLEAN SOIL FILL AND TOP SOIL BEHIND THE BEACH SILL IN ACCORDANCE WITH THE CONSTRUCTION PLAN. THE CONTRACTOR IS TO PROTECT PLACED MATERIALS FROM TIDES AND OTHER FREQUENT EVENTS. 8. UPON COMPLETION OF SOIL PLACEMENT FOR MARSH CREATION IN EACH SEGMENT, AND WITH THE COR UPON COMPLETION OF SOIL PLACEMENT FOR MARSH CREATION IN EACH SEGMENT, AND WITH THE COR AUTHORIZATION START MARSH PLANTING IN ACCORDANCE WITH THE PLANTING PLANS. 9. WITH AUTHORIZATION FROM THE COR BEGIN CONSTRUCTION OF THE COBBLE BEACH SILL AT ITS WITH AUTHORIZATION FROM THE COR BEGIN CONSTRUCTION OF THE COBBLE BEACH SILL AT ITS SOUTHERN TIE-IN TO EXISTING GROUND STATION 0+00 TO APPROXIMATELY STATION 1+00+/-. 10. CLEAR AND GRUB EXISTING VEGETATION AT SHORE TIE-IN ONLY AS NECESSARY TO PLACE ROCK CLEAR AND GRUB EXISTING VEGETATION AT SHORE TIE-IN ONLY AS NECESSARY TO PLACE ROCK FILLED MARINE MATTRESSES LEVEL AND ALIGNED. AVOID EXCESSIVE CLEARING AND GROUND DISTURBANCE. REMOVE EXCAVATED SOIL AND WOODY DEBRIS MAY BE RESERVED AND SPOILED LANDWARD (BEHIND) THE BEACH SILL IN THE LOWER ELEVATIONS AND COVERED WITH CLEAN SOIL FILL AS PART OF THE MARSH CREATION. 11. UPON COMPLETION OF THE COBBLE BEACH SILL AND MARSH CREATION, AND WITH AUTHORIZATION UPON COMPLETION OF THE COBBLE BEACH SILL AND MARSH CREATION, AND WITH AUTHORIZATION FROM THE COR CONDUCT A COMPLETED CONDITION SURVEY OF THE BEACH SILL AND NEW MARSH. 12. SUBMIT THE COMPLETED CONDITION SURVEY OF THE BEACH SILL AND MARSH TO THE COR, AND SUBMIT THE COMPLETED CONDITION SURVEY OF THE BEACH SILL AND MARSH TO THE COR, AND MAKE ANY REQUIRED ALTERATIONS AS NEEDED FOR APPROVAL.

DYKE MARSH GENERAL SEQUENCE OF CONSTRUCTION THE STONE BREAKWATER WILL BE THE FIRST UNIT OF WORK.

BARGE PLAN: 1. THE CONTRACTOR WILL SUBMIT A BARGE PLAN FOR REVIEW AND APPROVAL BY THE CONTRACTING OFFICER THE CONTRACTOR WILL SUBMIT A BARGE PLAN FOR REVIEW AND APPROVAL BY THE CONTRACTING OFFICER OR HIS AUTHORIZED REPRESENTATIVE. THE PLAN WILL ADHERE TO ALL APPLICABLE STATE AND FEDERAL REGULATIONS. 2. THE PLAN AT A MINIMUM WILL INCLUDE THE FOLLOWING: THE PLAN AT A MINIMUM WILL INCLUDE THE FOLLOWING: - SIZE, TYPE AND QUANTITY OF BARGES, ATTENDING CRAFT AND PURPOSE OF THESE VESSELS. SIZE, TYPE AND QUANTITY OF BARGES, ATTENDING CRAFT AND PURPOSE OF THESE VESSELS. - OFFSITE STAGING/LAYDOWN AREAS AND MOORING FACILITIES. OFFSITE STAGING/LAYDOWN AREAS AND MOORING FACILITIES. - PROPOSED ONSITE MOORING AREAS, TYPE OF MOORING AND LOCATION WITHIN NPS LANDS. PROPOSED ONSITE MOORING AREAS, TYPE OF MOORING AND LOCATION WITHIN NPS LANDS. - GENERAL TRANSIT PLAN FOR MATERIALS AND PERSONAL. GENERAL TRANSIT PLAN FOR MATERIALS AND PERSONAL. - EMERGENCY PROCEDURES FOR MINOR AND MAJOR STORMS AND FLOODING EVENTS EMERGENCY PROCEDURES FOR MINOR AND MAJOR STORMS AND FLOODING EVENTS - INCLUDE ALL APPROPRIATE AND TIMELY NOTICES AND APPLICATIONS TO THE U.S. COAST GUARD INCLUDE ALL APPROPRIATE AND TIMELY NOTICES AND APPLICATIONS TO THE U.S. COAST GUARD

NOTIFICATION OF THE U.S. COAST GUARD

PRIOR TO COMMENCEMENT OF WORK ON THIS CONTRACT, THE CONTRACTOR SHALL NOTIFY THE COMMANDER, FIFTH COAST GUARD DISTRICT IN WRITING WITH A COPY FURNISHED THE CONTRACTING OFFICER, OF ITS INTENDED CONSTRUCTION OPERATIONS AND REQUEST THAT IT BE PUBLISHED IN THE LOCAL NOTICE TO MARINERS. THIS NOTIFICATION MUST BE GIVEN IN SUFFICIENT TIME SO THAT IT APPEARS IN THE NOTICE TO MARINERS AT LEAST TWO WEEKS PRIOR TO THE COMMENCEMENT OF CONSTRUCTION.

OPERATIONS SIGNALS AND LIGHTS

THE CONTRACTOR SHALL DISPLAY SAFETY LIGHTS AND CONDUCT ITS OPERATIONS IN ACCORDANCE WITH THE U.S. COAST GUARD REGULATIONS GOVERNING LIGHTS AND DAY SIGNALS.

BREAKWATER NAVAGATION AIDS

THE CONTRACTOR WILL PROVIDE AND INSTALL A TOTAL OF THREE SOLAR POWERED FLASHING LIGHT BEACONS ON THE STONE BREAKWATER STARTING AT THE RIVERWARD TERMINUS AND AT 500 FT INTERVALS LANDWARD. THE RIVERWARD TERMINUS LIGHT WILL SLOW FLASH AND HAVE A 1 NAUTICAL MILE OPERATIONAL RANGE. THE TWO MID-BREAKWATER LIGHTS WILL BE LOW INTENSITY WARNING LIGHTS AND SLOW FLASH WITH DIFFERENT LIGHT CHARACTERISTICS THAN THE RIVERWARD TERMINUS BEACON. THE CONTRACTOR WILL PROVIDE AND INSTALL ANY REQUIRED DAYBOARDS. THESE AIDS TO NAVIGATION WILL MEET ALL U.S. COAST GUARD REQUIREMENTS AND BE AUTHORIZED BY THE U.S. COAST GUARD. THE CONTRACTOR WILL SUBMIT U.S. COAST GUARD FORM CG-2554 OR ITS SUCCESSOR FOR APPROVAL. THE THREE LIGHT BEACONS AND ANY DAYBOARDS WILL BE INSTALLED UPON THE COMPLETION OF THE STONE BREAKWATER AND ARE REQUIRED FOR ACCEPTANCE BY THE CONTRACTING OFFICER.

NATIONAL PARK SERVICE HAZARD SIGNS

THE CONTRACTOR WILL PROVIDE AND INSTALL SIX LARGE AND CONSPICUOUS WARNING SIGNS AS REQUIRED BY THE NATIONAL PARK SERVICE. THE SIGNS WILL STATE: FIRST LINE - "CAUTION SUBMERGED AND DANGEROUS HAZARDS" SECOND LINE - "NO CLIMBING" THE SIGNS WILL BE IN CONFORMANCE WITH U.S. ARMY CORPS OF ENGINEERS OR NATIONAL PARK SERVICE STANDARDS. A SIGN PLAN WILL COORDINATED WITH THE CONTRACTING OFFICERS REPRESENTATIVE AND SUBMITTED FOR APPROVAL PRIOR TO THE COMPLETION OF THE STONE BREAKWATER. THE SIGNS WILL BE INSTALLED UPON COMPLETION OF THE STONE BREAKWATER AND ARE REQUIRED FOR ACCEPTANCE BY THE CONTRACTING OFFICER.

0 50 100

HOGG ISLAND

-2

-3

-4

-6

-7

-8

MATCH LINE A MATCH LINE A

0+00

1+00

2+00

3+00

4+00

6+00

7+00

8+00

9+00

L1

EXTENT OF MARINE

MATTRESSES

MID-BREAKWATER

LIGHT BEACON PLATE

APPROX. LOCATION

24" GAS LINE

RIVER BOTTOM - MUD LINE

APPROXIMATE BOTTOM OF SETTLED MATTRESSES

EXISTING GRADE

STA. 1+96± TO 3+00± 12" OF CLEARING ANDGRUBBING FOR INSTALLATION OF MARINE MATTRESS. MATERIALS FROM CLEARING AND GRUBBING TO BE DISPOSED OF OFF SITE.

SEE SHEET C-301 FOR DETAILED PROFILE VIEW FROM STA. 1+96 TO STA. 5+50.

MLW = 0.0

MHW 2.8 MLW

STA. 2+00±START STONE BREAKWATER

STA. 1+96±START MARINE MATTRESS

AS-BUILT SURVEY

1-10-20

TOP OF MATTRES

BOTTOM OF LEVELING STONE

TOP OF LEVELING STONE

TOP OF ARMOR STONE

BOTTOM OF ARMOR STONE

CORE STONE

RFI #22

0 50 100

-10

-9

-11

-12

-12

-11

11+00

12+00

13+00

14+00

16+00

17+00

18+00

C1

L2

TERMINUS SECTION C-C (STA. 17+25 TO 17+49) SEE SHEET C-301 FOR DETAILS

RIVER BOTTOM - MUD LINE

APPROXIMATE LOCATION OF 24" GAS PIPELINE (STA. 10+79±),ELEVATION UNKNOWN*

APPROXIMATE LOCATION OF 24" GAS PIPELINE (STA. 10+58±),ELEVATION UNKNOWN*

*SEE SHEET G-003 FOR NOTES

MLW = 0.0 FT

MHW 2.8 FT MLW

STA. 17+49±END MARINE MATTRESS

STA. 17+25 END TYPICAL SECTION

1-10-20

TOP OF MATTRES

BOTTOM OF LEVELING STONE

TOP OF LEVELING STONE

TOP OF ARMOR STONE

BOTTOM OF ARMOR STONE

CORE STONE

0 40 80

MATCH LINE B MATCH LINE B

EXTENT OF MARINE MATTRESSES

COBBLE BEACH

24' WIDE

10' WIDE

CLASS II RIPRAP

TOE OF QUARRY SPALL

CLEAN SOIL FILL

CLEAN SOIL FILL

STA. 0+00 START RIPRAP SILL TIE-IN

STA. 1+00 START 1+00 START BEACH SILL SECTION

STA. 0+15 START RIPRAP TRANSITION SILL

STA. 0+65 START 0+65 START RIPRAP SILL SECTION

3.5

HOGG ISLAND GUT

REALIGNED SILL

0 40 80

COBBLE BEACH

10' WIDE

CLASS II RIPRAP

TOE OF QUARRY SPALL

CLEAN SOIL

FILL

STA. 23+75 END RIPRAP SILL TIE-IN

STA. 22+50 END 22+50 END BEACH SILL SECTION

STA. 23+60 END RIPRAP TRANSITION SILL

STA. 22+85 END 22+85 END RIPRAP SILL SECTION

L13

C-106

1-8 & 17-20

TOP OF SILL

C-107

C-301

2:1

CREST ELEV. =+5.5 FT MLW

TWO LAYERS OF ARMOR STONE.

-1.0 FT MLW

RIVER SIDE SOUTH

MARSH SIDE NORTH

RIVER BOTTOM

TWO ARMOR STONES AT TOE

VA CLASS II RIPRAP

MARINE MATTRESS

0.0 FT MLW

GEOTEXTILE ATTACHED TO FIRST MATTRESS

TWO LAYERS OF ARMOR STONE.

-1.0 FT MLW

TWO ARMOR STONES AT TOE

0.0 FT MLW

-1.5 FT MLW

-1.5 FT MLW

DETAIL A-A STONE BREAKWATER TIE-IN TO SHORE STA. 1+96 TO STA. 5+50 SEE SEQUENCE OF CONSTRUCTION SHEET G-003

TYPICAL SECTION B-B STONE BREAKWATER TYPICAL SECTION STA. 5+50 TO STA. 17+25 SEE SEQUENCE OF CONSTRUCTION SHEET G-003

DETAIL C-C STONE BREAKWATER TERMINUS STA. 17+25 TO STA. 17+49 SEE SEQUENCE OF CONSTRUCTION SHEET G-003

3.5'

QUARRY SPALLS AS LEVELING PAD. THICKNESS WILL VARY TO ACHIEVE ELEV. -4.5 MLW

SCALE: 1 IN.=10 FT.

SCALE: 1 IN.=10 FT.

%%UNOTES:

1. STONE FILL NOT SHOWN FOR CLARITY. STONE FILL NOT SHOWN FOR CLARITY. 2. DIAPHRAGM MAY BE CONNECTED USING 3/8" DIA. HDPE BODKIN ROD FOR GEOGRID. 3. EDGES SHALL BE TIED USING BRAID AND A LOCK STITCH FOR GEOGRID AS PER MANUFACTURER'S REQUIREMENTS. 4. MATTRESS WIDTHS MAY VARY DEPENDING ON THE MANUFACTURER'S SPECIFICATIONS AND/OR REQUIREMENTS. (i.e. SPREADER BAR DESIGN, NUMBER OF LIFTING POINTS, AND STRENGTH OF GEOGRID). CONTRACTOR MAY TIE INDIVIDUAL MATTRESSES TOGETHER TO MAKE A SINGLE UNIT. CONTRACTOR SHALL FOLLOW MANUFACTURER'S REQUIREMENTS FOR CONNECTING MATS TOGETHER. 5. MATTRESS AND GEOTEXTILE ARE OFFSET FOR CLARITY. MATTRESS AND GEOTEXTILE ARE OFFSET FOR CLARITY. 6. BODKIN RODS NOT SHOWN FOR CLARITY. BODKIN RODS NOT SHOWN FOR CLARITY. 7. ORIENT GEOGRID EXTENSION ON THE DOWNSTREAM SIDE OF THE MARINE MATTRESS, UNLESS OTHERWISE ORIENT GEOGRID EXTENSION ON THE DOWNSTREAM SIDE OF THE MARINE MATTRESS, UNLESS OTHERWISE RECOMMENDED BY THE MANUFACTURER. 8. ORIENT GEOGRID EXTENSION IN THE AHEAD DIRECTION OF THE MATTRESS PLACEMENT. ORIENT GEOGRID EXTENSION IN THE AHEAD DIRECTION OF THE MATTRESS PLACEMENT. 9. GEOTEXTILE ON THE EXTERIOR OF THE BOTTOM MATTRESS SHALL BE FASTENED SECURELY ON THE PERIMETER AT GEOTEXTILE ON THE EXTERIOR OF THE BOTTOM MATTRESS SHALL BE FASTENED SECURELY ON THE PERIMETER AT INTERVALS NO GREATER THAN 12" C-C. GREATER THAN 12" C-C. 10. SEE SPECIFICATIONS SECTION 35 21 20 POLYMERIC MARINE MATTRESS FOR ADDITIONAL INFORMATIONSEE SPECIFICATIONS SECTION 35 21 20 POLYMERIC MARINE MATTRESS FOR ADDITIONAL INFORMATION

END OF MATTRESS (SEAWARD)

DIAPHRAGM (TIE OR BOUND ON EACH EDGE) (TYP) (SEE NOTE 2)

316" DIA. HIGH UV BRAID (TYP) EACH EDGE FOR GEOGRID (SEE NOTE 3)

VARIES 5' +'

VARIES 5' +'

2'

2' (TYP)

38" DIA. HDPE BODKIN RODS FASTENED TO GEOGRID (TYP)

2' (SEE NOTE 8)

2' (SEE NOTE 7)

12"

(TYP)

38" DIA. HDPE BODKIN RODS FASTENED TO GEOGRID (TYP)

GEOTEXTILE (SEE NOTES 5 & 9)

GEOGRID

DIAPHRAGM (TYP)

316" DIA. HIGH UV BRAID (TYP) EACH EDGE FOR GEOGRID (SEE NOTE 3)

DETAIL (ISOMETRIC) 12 INCH MARINE MATTRESS (NOT TO SCALE)

SECTION 12 INCH MARINE MATTRESS (NOT TO SCALE)

TWO LAYERS OF ARMOR STONE

TRANSITION TO ONE LAYER OF ARMOR STONE.

STA. 2+00

STA. 5+50

CLEARING AND GRUBBING FOR INSTALLATION OF MARINE MATTRESS FROM STA. 1+96 TO STA. 3+00

STA. 3+00

FULL BREAKWATER SECTION

MHW +2.8 FT MLW

MLW = +0.0 FT MLW

BEGIN MARINE MATTRESS (STA. 1+96)

C-302A1

4+00

MATTRESS EDGE

-15

-20

-40

-30

-50

06/18/2018 GROUND

10/09/2018 LAYER 2

01/17/2019 BEDDING

01/10/2020 ARMOR

01/03/2019 LAYER 3

01/16/2019 BEDDING

2+00

08/15/2018 LAYER 1

08/22/2018 BEDDING

4+50

01/08/2019 LAYER 4

01/28/2019 BEDDING

3+50

01/03/2019 LAYER 3

2+50

08/15/2018 LAYER 1

01/17/2019 CORE

01/16/2019 CORE

08/22/2018 CORE

01/28/2019 CORE

C-302A2

7+00

01/09/2019 LAYER 5

07/17/2019 BEDDING

6+00

01/24/2019 LAYER 5

01/08/2019 LAYER 4

01/24/2019 BEDDING

7+50

01/14/2019 LAYER 5

6+50

07/31/2019 CORE

5+50

LEVELING STONE

LEVELING STONE

01/24/2019 CORE

C-302A3

07/03/2019 LAYER 8

07/25/2019 BEDDING

07/03/2019 LAYER 6

8+00

06/04/2019 LAYER 6

10+50

08/21/2018 GROUND

07/03/2019 LAYER 9

9+50

07/03/2019 LAYER 7

8+50

06/04/2019 LAYER 6

C-302A4

13+00

12+00

07/03/2019 LAYER 10

11+00

13+50

12+50

07/03/2019 LAYER 10

11+50

08/05/2019 CORE

C-302A5

16+00

07/03/2019 LAYER 4

14+00

16+50

15+50

14+50

08/15/2019 CORE