SF30_Amend0003_5Aug19.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

J

PAGE OF PAGES

1 36

2. AMENDMENT/MODIFICATION NO.

3. EFFECTIVE DATE

5- Aug-2019

4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO.(Ifapplicable)

6. ISSUED BY CODE W912EP 7. ADMINISTERED BY (Ifother than item 6) CODE

USA ENGINEER DISTRICT, JACKSONVILLE

CONTRACTING DIVISION

701 SAN MARCO BLVD

JACKSONVILLE FL 32207-8175

See Item 6

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

9A. AMENDMENT OF SOLICITATION NO.

W912EP19R0005

X 9B. DATED (SEE ITEM 11)

03-Jul-2019

10A. MOD. OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item14. The hour and date specified for receipt of Offer is extended, is not extended.

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

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

or (c) By separate letter or telegramwhich 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. Ifby virtue ofthis amendment you desire to change an offer already submitted, such change may be made by telegramor letter, provided each telegramor 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 CONTRACT S/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.)

MARINE CORPS SUPPORT FACILITY- BLOUNT ISLAND, CONCRETE SILL REMOVAL

A. See continuation sheet for amendment details

B. All other terms and conditions remain unchanged

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

15A. NAME AND TITLE OF SIGNER (Type or print) 16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

TEL: EMAIL:

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA

BY

(Signature of Contracting Officer)

16C. DATE SIGNED

EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

30-105-04 STANDARD FORM 30 (Rev. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.243

X

SF 30 CONTINUATION SHEET

Marine Corps Support Facility – Blount Island, Concrete Sill Removal, Duval County, Florida

W912EP19R0005 2 Amendment 0003

SUMMARY OF CHANGES

1. SPECIFICATIONS:

Changes in Green representing additions

DELETE Section 00010A and REPLACE with the attached revised Section 00010A.

DELETE Section 00800A and REPLACE with the attached revised Section 00800A.

DELETE Section 35 20 23 and REPLACE with the attached revised Section 35 20 23.

2. DRAWINGS: No change to drawings.

3. AVAILABLE INFORMATION (separate survey zip file):

19-196_survey.zip.

(End of Summary of Changes)

SECTION 00010A

LINE ITEMS AND PRICING SCHEDULE

MARINE CORPS SUPPORT FACILITY - BLOUNT ISLAND

CONCRETE SILL REMOVAL, DUVAL COUNTY, FLORIDA

W912EP19R0005 00010A-1 Amendment 0003

LINE ITEM DESCRIPTION QUANTITY UNIT UNIT PRICE TOTAL

0001 MOBILIZATION AND PREPARATORY WORK

(SEE NOTE 4) JOB $_______________

0002 SILL STRUCTURE REMOVAL JOB $_______________

0003 ENVIRONMENTAL MONITORING JOB $_______________

0004 STANDBY TIME (SEE NOTE 2) 912 HOUR $___________ $_______________

0005 INTERIM DEMOBILIZATION AND MOBILIZATION

(SEE NOTE 3) 9 EACH $___________ $_______________

0006 PARTNERING REGROUP 1 EACH $___________ $_______________

TOTAL BID (LINE ITEMS 0001 THROUGH 0006) $_______________

NOTES: (1) OFFEROR MUST PRICE ALL LINE ITEMS.

(2) STANDBY TIME IS DEFINED AS WHEN THE PLANT AND EQUIPMENT IS NOT IN OPERATION AT THE DIRECTION OF THE CONTRACTING OFFICER OR ADMINISTRATIVE CONTRACTING OFFICER. STANDBY TIME SHALL BE UTILIZED ONLY DUE TO THE PRESENCE OF ENDANGERED SPECIES IN THE IMMEDIATE AREA OF OPERATIONS, DIFFERING SITE CONDITIONS, SECURITY OPERATIONS OR OTHER CONDITIONS AS DETERMINED BY THE CONTRACTING OFFICER. STANDBY TIME IS NOT AFFORDED FOR DELAYS CAUSED BY ADVERSE WEATHER CONDITIONS. THIS LINE ITEM IS NOT SUBJECT TO THE VARIATION IN ESTIMATED QUANTITY CLAUSE, AND PAYMENT WILL ONLY BE MADE FOR ACTUAL STANDBY TIME REQUIRED BY THE CONTRACTING OFFICER. SEE SECTION 01 22 00 MEASUREMENT AND PAYMENT AND SECTION

01 57 20 ENVIRONMENTAL PROTECTION.

(3) INTERIM DEMOBILIZATION AND MOBILIZATION IS DEFINED AS WHEN THE SILL REMOVAL PLANT AND EQUIPMENT DEMOBILIZES FROM THE SITE TO ALLOW FOR NAVAL VESSEL MOVEMENT OR SPECIAL LOADING/UNLOADING OPERATIONS, AND RETURNS TO THE SITE AT THE DIRECTION OF THE CONTRACTING OFFICER OR ADMINISTRATIVE CONTRACTING OFFICER. THIS LINE ITEM WILL BE UTILIZED ONLY TO ALLOW FOR ARRIVAL, SPECIAL LOADING/UNLOADING OPERATIONS, AND DEPARTURE OF NAVAL VESSELS OR OTHER CONDITIONS AS DETERMINED BY THE CONTRACTING OFFICER. PAYMENT UNDER THIS LINE ITEM WILL BE FOR ALL COSTS INCURRED BEGINNING WITH CESSATION OF WORK THROUGH SECURING EQUIPMENT AND REMOVAL FROM THE SITE, TEMPORARY BERTHING, MOBILIZATION TO THE SITE AND SET-UP OF EQUIPMENT. PAYMENT UNDER THIS LINE ITEM WILL CEASE UPON RESUMPTION OF WORK. THIS LINE ITEM IS NOT AFFORDED FOR DELAYS CAUSED BY ADVERSE WEATHER CONDITIONS. THIS LINE ITEM IS NOT SUBJECT TO THE VARIATION IN ESTIMATED QUANTITY CLAUSE, AND PAYMENT WILL ONLY BE MADE FOR ACTUAL INTERIM DEMOBILIZATION AND MOBILIZATION REQUIRED BY THE CONTRACTING OFFICER. SEE SECTION 01 22 00

MEASUREMENT AND PAYMENT.

(4) SEE DFARS CLAUSE 252.236-7003 PAYMENT FOR MOBILIZATION AND PREPARATORY WORK FOR INFORMATION ON THE DOCUMENTATATION THE CONTRACTOR WILL HAVE TO SUBMIT FOR PAYMENT UNDER THIS LINE ITEM.

Section 00800A - WAGE DETERMINATIONS & OTHER ATTACHMENTS

52.200-1 LIST OF CONSTRUCTION CONTRACT ATTACHMENTS

NO. TITLE DATE NO. OF PAGES

1 NOTE 1

2 General Decision Number FL20190002 05/10/2019 5 3 General Decision Number FL20190111 03/15/2019 8

W912EP19R0005 00800A-1 Amendment 0003

NOTE NOTE NOTE

THIS PROJECT INCORPORATES BOTH THE STATEWIDE HEAVY DREDGING WAGE

DECISION FOR FLORIDA AND THE HEAVY CONSTRUCTION WAGE DECISION

FOR DUVAL COUNTY, FL

*** THE HEAVY CONSTRUCTION WAGE DECISION WILL NOT BE

APPLIED TO OPERATIONS CONDUCTED ABOARD VESSELS

OR FLOATING PLANT OF ANY TYPE ***

EXECUTIVE ORDER (EO) 13658 ESTABLISHES AN HOURLY MINIMUM WAGE OF

$10.60 FOR 2019 THAT APPLIES TO ALL CONTRACTS SUBJECT TO THE DAVIS-

BACON ACT FOR ALL HOURS PERFORMED ON THE CONTRACT IN CALENDAR

YEAR 2019

IF YOU HAVE ANY QUESTIONS CONCERNING THE APPLICATION OF THE WAGE

DECISIONS FURNISHEDFOR THIS PROJECT, PLEASE CONTACT:

FRAN RUSSELL, OFFICE OF COUNSEL, JACKSONVILLE DISTRICT, U.S. ARMY

CORPS OF ENGINEERSAT fran.g.russell@usace.army.mil

W912EP19R0005 00800A-2 Amendment 0003 mailto:fran.g.russell@usace.army.mil

General Decision Number: FL20190002 05/10/2019

Superseded General Decision Number: FL20180002

State: Florida

Construction Type: Heavy Dredging

Counties: Florida Statewide.

Dredging Construction Projects FLORIDA (Excluding West of the

Aucilla River and its tributary waterways)

Note: Under Executive Order (EO) 13658, an hourly minimum wage of $10.60 for calendar year 2019 applies to all contracts subject to the Davis-Bacon Act for which the contract is awarded (and any solicitation was issued) on or after January

1, 2015. If this contract is covered by the EO, the contractor must pay all workers in any classification listed on this wage determination at least $10.60 per hour (or the applicable wage rate listed on this wage determination, if it is higher) for all hours spent performing on the contract in calendar year

2019. If this contract is covered by the EO and a classification considered necessary for performance of work on the contract does not appear on this wage determination, the contractor must pay workers in that classification at least the wage rate determined through the conformance process set forth in 29 CFR 5.5(a)(l)(ii) (or the EO minimum wage rate,if it is higher than the conformed wage rate). The EO minimum wage rate will be adjusted annually. Please note that this EO applies to the above-mentioned types of contracts entered into by the federal government that are subject to the Davis-Bacon Act itself, but it does not apply to contracts subject only to the

Davis-Bacon Related Acts, including those set forth at 29 CFR

5.1(a)(2)-(60). Additional information on contractor requirements and worker protections under the EO is available at www.dol.gov/whd/govcontracts.

W912EP19R0005 00800A-3 Amendment 0003

W912EP19R0005 00800A-4 Amendment 0003

W912EP19R0005 00800A-5 Amendment 0003

W912EP19R0005 00800A-6 Amendment 0003

W912EP19R0005 00800A-7 Amendment 0003

W912EP19R0005 00800A-8 Amendment 0003

W912EP19R0005 00800A-9 Amendment 0003

General Decision Number: FL20190111 03/15/2019

Superseded General Decision Number: FL20180154

State: Florida

Construction Type: Heavy

County: Duval County in Florida.

HEAVY CONSTRUCTION PROJECTS (Including Sewer and Water Lines)

Note: Under Executive Order (EO) 13658, an hourly minimum wage of $10.60 for calendar year 2019 applies to all contracts subject to the Davis-Bacon Act for which the contract is awarded (and any solicitation was issued) on or after January

1, 2015. If this contract is covered by the EO, the contractor must pay all workers in any classification listed on this wage determination at least $10.60 per hour (or the applicable wage rate listed on this wage determination, if it is higher) for all hours spent performing on the contract in calendar year

2019. If this contract is covered by the EO and a classification considered necessary for performance of work on the contract does not appear on this wage determination, the contractor must pay workers in that classification at least the wage rate determined through the conformance process set forth in 29 CFR 5.5(a)(l)(ii) (or the EO minimum wage rate,if it is higher than the conformed wage rate). The EO minimum wage rate will be adjusted annually. Please note that this EO applies to the above-mentioned types of contracts entered into by the federal government that are subject to the Davis-Bacon Act itself, but it does not apply to contracts subject only to the

Davis-Bacon Related Acts, including those set forth at 29 CFR

5.1(a)(2)-(60). Additional information on contractor requirements and worker protections under the EO is available at www.dol.gov/whd/govcontracts.

W912EP19R0005 00800A-10 Amendment 0003

W912EP19R0005 00800A-11 Amendment 0003

W912EP19R0005 00800A-12 Amendment 0003

W912EP19R0005 00800A-13 Amendment 0003

W912EP19R0005 00800A-14 Amendment 0003

W912EP19R0005 00800A-15 Amendment 0003

W912EP19R0005 00800A-16 Amendment 0003

W912EP19R0005 00800A-17 Amendment 0003

Marine Corps Support Facility - Blount Island Concrete Sill Removal, Duval County, Florida

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 20 23

DREDGING

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 SUBMITTALS

1.4 DREDGING RESTRICTIONS

1.4.1 Order of Work

1.4.2 Hopper Restriction

1.4.3 Agitation Dredging

1.5 SPECIAL INSTRUCTIONS

1.6 MAINTENANCE DREDGING AND SHOALING

1.7 PUMPING OF BILGES

1.8 HISTORICAL PERIOD SHIPWRECK SITES

1.9 UTILITY CROSSINGS

1.9.1 General

1.10 PERMITS

1.11 FUEL OIL TRANSFER OPERATIONS

1.12 SIGNAL LIGHTS

1.13 NOTICE TO MARINERS -- DREDGING CONTRACTS

1.14 FINAL CLEANUP

1.15 WORK VIOLATIONS

PART 2 PRODUCTS (NOT APPLICABLE)

PART 3 EXECUTION

3.1 NOTIFICATION OF COAST GUARD

3.1.1 Relocation of Navigation Aids

3.1.2 Dredging Aids

3.2 WORK AREA

3.2.1 Access

3.2.2 Protection of Existing Waterways

3.2.3 Adjacent Property and Structures

3.2.4 Subaqueous Cable Crossings

3.3 DREDGE LOCATION CONTROL

3.4 DISPOSAL OF EXCAVATED MATERIAL

3.4.1 General

3.4.1.1 Disposal Area Details

3.4.2 Location of Pipeline Discharge Area

3.4.3 Upland Disposal Area Management

3.4.3.1 Maximum Height of Dredged Materials at D/A-D

3.4.3.2 D/A-D Weir Operations

3.4.3.3 Existing Dredge Pipe Segment

3.4.4 Other Sediment Disposal Locations

3.4.5 Placing of Dredged Material

SECTION 35 20 23 Page 1 W912EP19R0005 Amendment 0003

Mar i ne Cor ps Suppor t Faci l i t y - Bl ount I s l and Concr et e Si l l Removal , Duval Count y, Fl or i da

3. 4. 6 Dr edge Pi pel i nes

3. 4. 6. 1 Dr edge Di schar ge Pi pel i ne

3. 4. 6. 2 Submer ged Pi pel i ne

3. 4. 6. 3 Fl oat i ng Pi pel i ne

3. 4. 7 Boost er Pumps

3. 4. 8 Mi spl aced Mat er i al

3. 5 I NSPECTI ON

3. 5. 1 Qual i t y Assur ance Repr esent at i ve ( QAR)

3. 5. 2 Fai l ur e t o Compl y

3. 6 NOI SE CONTROL

3. 7 DREDGE CERTI FI CATI ON

3. 8 CERTI FI CATI ON OF ATTENDANT AND AUXI LI ARY PLANT

3. 9 CONSTRUCTI ON FORMS AND DETAI LS

- - End of Sect i on Tabl e of Cont ent s - -

SECTI ON 35 20 23 Page 2

SECTI ON 35 20 23

DREDGING

PART 1 GENERAL

1. 1 SCOPE

The wor k cover ed by t hi s sect i on consi st s of f ur ni shi ng al l l abor , mat er i al s, and equi pment , and per f or mi ng al l excavat i on and di sposal of al l mat er i al as speci f i ed her ei n or i ndi cat ed on t he dr awi ngs. Thi s scope al so i ncl udes al l necessar y measur es f or pr ot ect i on of t he envi r onment .

Envi r onment al pr ot ect i on r equi r ement s under t hi s cont r act ar e as i mpor t ant t o over al l compl et i on of t he wor k as ot her t echni cal aspect s. Fai l ur e t o meet t he r equi r ement s of t hese speci f i cat i ons f or envi r onment al pr ot ect i on may r esul t i n wor k st oppages or t er mi nat i on f or def aul t . No par t of t he t i me l ost due t o any such wor k st oppages shal l be made t he subj ect of c l ai ms f or ext ensi ons of t i me or f or excess cost s or damages by t he Cont r act or . I f t he Cont r act or f ai l s or r ef uses t o pr ompt l y r epai r any damage caused by v i ol at i on of t he pr ovi s i ons of t hese speci f i cat i ons, t he Cont r act i ng Of f i cer may have t he necessar y wor k per f or med and char ge t he cost t her eof t o t he Cont r act or .

1. 2 REFERENCES

The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o i n t he t ext by basi c desi gnat i on onl y.

U. S. ARMY CORPS OF ENGI NEERS ( USACE)

EM 385- 1- 1 Saf et y and Heal t h Requi r ement s Manual

1. 3 SUBMITTALS

Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" desi gnat i on;

submi t t al s not havi ng a " G" desi gnat i on ar e f or i nf or mat i on onl y. When used, a desi gnat i on f ol l owi ng t he " G" desi gnat i on i dent i f i es t he of f i ce t hat wi l l r evi ew t he submi t t al f or t he Gover nment . The f ol l owi ng shal l be submi t t ed i n accor dance wi t h Sect i on 01 33 00 SUBMI TTAL PROCEDURES:

SD- 01 Pr econst r uct i on Submi t t al s

Not i ce of I nt ent t o Dr edge

Pr i or t o commencement of wor k on t hi s cont r act , t he Cont r act or shal l not i f y t he Commander , Sevent h Coast Guar d Di st r i c t of hi s i nt ended oper at i ons t o dr edge and r equest t hat i t be publ i shed i n t he Local Not i ce t o Mar i ner s. Thi s not i f i cat i on must be gi ven i n suf f i c i ent t i me so t hat i t appear s i n t he Not i ce t o Mar i ner s at l east t wo weeks pr i or t o t he commencement of t hi s dr edgi ng oper at i on. A copy of t he not i f i cat i on shal l be pr ovi ded t o t he Cont r act i ng Of f i cer .

Rel ocat i on of Navi gat i on Ai ds

SECTI ON 35 20 23 Page 3

The Cont r act or shal l not r emove, change t he l ocat i on of , obst r uct , wi l l f ul l y damage, make f ast t o, or i nt er f er e wi t h any ai d t o navi gat i on. Wi t hi n 7 cal endar days f ol l owi ng r ecei pt of Not i ce of Awar d, t he Cont r act or shal l not i f y t he Commander , Sevent h Coast Guar d Di st r i c t , Mi ami , Fl or i da, of hi s pl an t o dr edge adj acent t o any ai ds whi ch r equi r e r el ocat i on t o f aci l i t at e dr edgi ng. The not i f i cat i on shal l be sent v i a Fax t o 305- 415- 6757, ATTN: Mr . Gene St r at t en. Thi s not i f i cat i on shal l be i mmedi at el y f ol l owed by a f or mal wr i t t en r equest wi t h a copy t o t he Cont r act i ng Of f i cer . The Cont r act or shal l al so cont act t he U. S.

Coast Guar d, 305- 415- 6750, f or i nf or mat i on concer ni ng t he posi t i on t o whi ch t he ai ds wi l l be r el ocat ed.

SD- 02 Shop Dr awi ngs

Dr edgi ng and Di sposal Pl an; G, AO

The Cont r act or shal l submi t a dr edgi ng and di sposal pl an t hi r t y ( 30) days pr i or t o commencement of dr edgi ng, t o be appr oved by t he Cont r act i ng Of f i cer pr i or t o t he commencement of dr edgi ng. The dr edgi ng and di sposal pl an must i ncl ude t he dr edgi ng pl ant t he Cont r act or i nt ends t o use on each bi d i t em and a schedul e i ndi cat i ng st ar t i ng and compl et i on dat es f or each dr edgi ng sect i on. The Cont r act or ' s dr edgi ng and di sposal pl an as wel l as oper at i ons pl an shal l ensur e t he f ol l owi ng:

a. Suf f i c i ent pondi ng ar ea wi t hi n t he di sposal ar ea( s) f or pr oper ef f l uent wat er qual i t y .

b. Dr edge si ze and pr oduct i on r at es sui t abl e t o t he di sposal ar ea( s) s i ze and pr oper ef f l uent di schar ge r at es.

c. The dr edgi ng pl an shal l al so i ncl ude ( but i s not l i mi t ed t o) t he f ol l owi ng:

( 1) A descr i pt i on and schedul e of al l oper at i ons t hat wi l l be per f or med i n connect i on wi t h t he r emoval and t r anspor t of mat er i al . The oper at i ons shal l be descr i bed i n t he sequence i n whi ch t hey wi l l be per f or med.

( 2) A descr i pt i on of al l pl ant ( i ncl udi ng names of dr edges) and equi pment t hat wi l l be ut i l i zed i n connect i on wi t h t he r emoval and t r anspor t of mat er i al .

( 3) Pl ant t o be used i n each sect i on.

( 4) A descr i pt i on of t he pl an of oper at i on of t he wei r , i ncl udi ng whi ch wei r s wi l l be used dur i ng dr edgi ng oper at i ons.

( 5) I f a di sposal l ocat i on ot her t han Dayson I s l and ( D/ A- D) Dr edge Mat er i al Pl acement Faci l i t y ( DMPF) i s pr oposed by t he Cont r act or , a descr i pt i on of t he di sposal s i t e( s) shal l be submi t t ed. The descr i pt i on shal l i ncl ude si t e name, l ocat i on addr ess, name and cont act i nf or mat i on of pr oper t y owner , a St at e Oper at i onal Per mi t f or t he s i t e( s) , and a st at ement of per mi ssi on t o l awf ul l y di spose of t he mat er i al at t he s i t e( s) .

d. The Cont r act i ng Of f i cer must appr ove t he oper at i ons pl an pr i or

SECTI ON 35 20 23 Page 4 t o mobi l i zat i on and any oper at i on pl an modi f i cat i ons pr i or t o t hei r i mpl ement at i on. The oper at i ons pl an must be expl i c i t and must i ncl ude, but i s not l i mi t ed t o t he f ol l owi ng:

( 1) Shi f t s and cr ew si zes.

( 2) Communi cat i ons.

( 3) How t he dept h and hor i zont al posi t i oni ng of t he dr edge head wi l l be moni t or ed and how t he dept h measur ement wi l l be cal i br at ed.

Dr ag Bar And Ot her Equi pment ; G, RO

Submi t dr awi ngs and one phot ogr aph showi ng dr ag bar or ot her equi pment used f or f i nal l evel i ng wor k or movement of sedi ment wi t hi n t he pr oj ect ar ea.

Dr edge Equi pment Posi t i on And Dept h

Submi t as i ndi cat ed i n par agr aph DREDGE LOCATI ON CONTROL bel ow.

SD- 07 Cer t i f i cat es

Equi pment and Per f or mance Dat a

The Cont r act or shal l f ur ni sh pr oof of el ect r oni c posi t i oni ng equi pment cal i br at i on t o t he Cont r act i ng Of f i cer . See par agr aph DREDGE LOCATI ON CONTROL bel ow.

Hi st or i cal Per i od Shi pwr eck Si t es

The Cont r act or shal l i mmedi at el y not i f y t he Cont r act i ng Of f i cer i f any shi pwr eck, ar t i f act , or ot her obj ect s of ant i qui t y t hat have sci ent i f i c or hi st or i cal val ue, or ar e of i nt er est t o t he publ i c, ar e di scover ed, l ocat ed, and/ or r ecover ed.

Dai l y/ Mont hl y Repor t of Oper at i ons

The Cont r act or shal l pr epar e on RMS and submi t one ( 1) har d copy of t he Dai l y Repor t of Oper at i ons, usi ng ENG For m No. 4267, f or each dr edge and/ or unl oader wor ki ng. Thi s r epor t shal l be submi t t ed on a dai l y basi s and not i n gr oups ( gr oups = mul t i - days r epor t s packaged t oget her at one t i me) . I n addi t i on t o t he dai l y r epor t , t he Cont r act or shal l pr epar e a Mont hl y Repor t of Oper at i ons f or each mont h or par t i al mont h' s wor k on ENG For m No.

4267. The mont hl y r epor t shal l be submi t t ed on or bef or e t he 7t h of each mont h, consol i dat i ng t he pr evi ous mont h' s wor k. Upon compl et i on of t he j ob, t he Cont r act or shal l submi t a consol i dat ed j ob r epor t , combi ni ng t he mont hl y r epor t s. The Cont r act or shal l di st r i but e one copy of each r epor t t o t he Di st r i c t Engi neer ;

ATTN: CESAJ- EN- C; U. S. Ar my Engi neer Di st r i c t , Jacksonvi l l e, P. O.

Box 4970; Jacksonvi l l e, Fl or i da 32232- 0019. Repor t s shal l be submi t t ed on a mont hl y basi s wi t h dai l y r epor t s accompanyi ng t he mont hl y r epor t and j ob r epor t .

Addi t i onal l y, one copy of t he f or m( s) shal l be mai nt ai ned by t he Cont r act or on t he dr edge( s) f or t he Cont r act i ng Of f i cer ' s i nspect i on pur pose. Fur t her i nst r uct i ons on t he pr epar at i on of t he r epor t s wi l l be f ur ni shed at t he Pr econst r uct i on Conf er ence.

SECTI ON 35 20 23 Page 5

Misplaced Material

The Contractor shall notify the U.S. Coast Guard Marine Safety Office of any misplaced material as stated in the Clause OBSTRUCTION OF NAVIGABLE WATERWAYS of Section 00700 CONTRACT CLAUSES in Volume 1.

Declaration of Inspection for Refueling

Refer to paragraph FUEL OIL TRANSFER OPERATIONS below for submittal.

1.4 DREDGING RESTRICTIONS

1.4.1 Order of Work

The Contractor shall perform the Order of Work as directed by the Contracting Officer. Incoming Naval Vessels move into and out at any time without notice; therefore, dredging operations may have to move if so directed by the Contracting Officer.

1.4.2 Hopper Restriction

The use of hopper dredges is prohibited for this location.

1.4.3 Agitation Dredging

Agitation dredging is permitted only within the areas of the channel that are below the required channel elevation of -38.0 feet MLLW and not permitted in areas of the channel that are above this elevation. Ensure that water quality standards are not exceeded per Section 01 57 25 TURBIDITY AND DISPOSAL MONITORING and by using best management practices as appropriate.

1.5 SPECIAL INSTRUCTIONS

Dredging of insitu rock is not required; but if encountered, the location and extent of any insitu rock shall be reported to the Contracting Officer. All debris encountered during the dredging process shall become property of the Contractor and shall be removed and disposed in an offsite landfill selected by the Contractor and approved by the Contracting Officer.

1.6 MAINTENANCE DREDGING AND SHOALING

It is anticipated that another contractor will perform maintenance dredging within the project channel prior to commencement of work under this contract. The maintenance dredging project will clear 100 feet of material around the sill on both sides down to elevation -50 feet MLLW to provide access to the sill structure. The top and bottom ends of the sill structure Stations 7+00 to 7+32.6 at channel Range 713.25 and Range 286.75 will not be dredged by another contractor. However, if it is deemed necessary to excavate at the top and bottom ends of the sill, the excavation shall not be deeper than elevation -47 ft MLLW, and the maximum horizontal distance away from the edge of the sill to the toe of the excavation shall be 15 feet. Maintenance dredging is typically performed on an annual basis within this channel. Therefore, there will likely be another maintenance dredging event performed by another contractor concurrently with this project. The average annual shoaling rate in the

SECTION 35 20 23 Page 6 vi c i ni t y of t he concr et e s i l l ( channel St at i ons 0+00 t o 12+00) i s appr oxi mat el y 80, 000 cubi c yar ds per year .

1. 7 PUMPI NG OF BI LGES

Cont r act or s ar e war ned t hat pumpi ng oi l or bi l ge wat er cont ai ni ng oi l i nt o navi gabl e wat er s, or i nt o ar eas whi ch woul d per mi t t he oi l t o f l ow i nt o such wat er s, i s pr ohi bi t ed by Sect i on 13 of t he Ri ver and Har bor Act of 1899, appr oved 3 Mar ch 1899 ( 30 St at . 1152; 33 U. S. C. 407) . Vi ol at i on of t hi s pr ohi bi t i on i s subj ect t o t he penal t i es under t he r ef er enced Act s.

1. 8 HI STORI CAL PERI OD SHI PWRECK SI TES

I f any shi pwr eck, ar t i f act , or ot her obj ect s of ant i qui t y t hat have sci ent i f i c or hi st or i cal val ue, or ar e of i nt er est t o t he publ i c, ar e di scover ed, l ocat ed, and/ or r ecover ed, t he Cont r act or acknowl edges t hat :

a. The si t e( s) , ar t i c l es, or ot her mat er i al s ar e t he pr oper t y of t he St at e of Fl or i da, wi t h t i t l e vest ed i n t he Depar t ment of St at e, Di v i s i on of Hi st or i cal Resour ce; and t hat ,

b. They wi l l i mmedi at el y not i f y t he Cont r act i ng Of f i cer .

1. 9 UTI LI TY CROSSI NGS

1. 9. 1 General

I t i s t he Cont r act or ' s r esponsi bi l i t y t o i nvest i gat e t he l ocat i on of al l ut i l i t y cr ossi ngs. The Cont r act or shal l t ake pr ecaut i ons agai nst damages whi ch mi ght r esul t f r om hi s oper at i ons i n t he v i c i ni t y of t he ut i l i t y cr ossi ngs. I f any damage occur s as a r esul t of hi s oper at i ons, t he Cont r act or wi l l be r equi r ed t o suspend dr edgi ng unt i l t he damage i s r epai r ed and appr oved by t he Cont r act i ng Of f i cer . Cost s of such r epai r s and downt i me of t he dr edge and at t endant pl ant shal l be at t he Cont r act or ' s expense.

1. 10 PERMITS

The Cont r act or ' s at t ent i on i s di r ect ed t o t he Cl ause PERMI TS AND RESPONSI BI LI TI ES of Sect i on 00700 CONTRACT CLAUSES i n Vol ume 1 and t he par agr aph PERMI TS AND AUTHORI ZATI ONS of Sect i on 01 57 20 ENVI RONMENTAL

PROTECTION.

1. 11 FUEL OI L TRANSFER OPERATI ONS

I n accor dance wi t h U. S. Coast Guar d r egul at i ons ( 33 CFR 156. 120) , coupl i ngs used i n f uel oi l t r ansf er oper at i ons on any vessel wi t h a capaci t y of 250 or mor e bar r el s of oi l shal l be ei t her a bol t ed or f ul l - t hr eaded connect i on; or a qui ck- connect coupl i ng appr oved by t he Commandant ; or an aut omat i c back- pr essur e shut of f nozzl e used t o f uel t he vessel . An execut ed f uel oi l t r ansf er ( Decl ar at i on) f or m si gned by t he t anker oper at or shal l be submi t t ed t o t he Cont r act i ng Of f i cer f or each r ef uel i ng oper at i on. The U. S. Coast Guar d shal l al so be not i f i ed pr i or t o any r ef uel i ng. A copy of t he Decl ar at i on of I nspect i on f or Ref uel i ng i s on t he web si t e i ndi cat ed i n t he par agr aph CONSTRUCTI ON FORMS AND DETAI LS bel ow.

1. 12 SI GNAL LI GHTS

The Cont r act or shal l di spl ay s i gnal l i ght s and conduct oper at i ons i n

SECTI ON 35 20 23 Page 7 accor dance wi t h t he Gener al Regul at i ons of t he Depar t ment of t he Ar my and of t he Coast Guar d gover ni ng l i ght s and day s i gnal s t o be di spl ayed by t owi ng vessel s wi t h t ows on whi ch no s i gnal s can be di spl ayed, vessel s wor ki ng on wr ecks, dr edges, and vessel s engaged i n l ayi ng cabl es or pi pe or i n submar i ne or bank pr ot ect i on oper at i ons, l i ght s t o be di spl ayed on dr edge pi pe l i nes, and day s i gnal s t o be di spl ayed by vessel s of mor e t han 65 f eet i n l engt h moor ed or anchor ed i n a f ai r way or channel , and t he passi ng by ot her vessel s of f l oat i ng pl ant wor ki ng i n navi gabl e channel s, as set f or t h i n Commandant U. S. Coast Guar d I nst r uct i on M16672. 2, Navi gat i on Rul es: I nt er nat i onal - I nl and ( COMDTI NST M16672. 2) , or 33 CFR 81 Appendi x A ( I nt er nat i onal ) and 33 CFR 84 t hr ough 33 CFR 89 ( I nl and) as applicable.

1. 13 NOTI CE TO MARI NERS - - DREDGI NG CONTRACTS

Shoul d t he Cont r act or , dur i ng oper at i ons, encount er any obj ect s on t he channel bot t om whi ch coul d be a hazar d t o navi gat i on, t he Cont r act or shal l i mmedi at el y not i f y t he Cont r act i ng Of f i cer as t o t he l ocat i on of sai d obj ect and shal l pr ovi de any ot her per t i nent i nf or mat i on necessar y f or t he Cont r act i ng Of f i cer t o pr epar e and i ssue a Not i ce t o Mar i ner s.

1. 14 FI NAL CLEANUP

Fi nal c l eanup, as st at ed i n t he par agr aph COMMENCEMENT, PROSECUTI ON, AND COMPLETI ON OF WORK of Sect i on 00700 CONTRACT CLAUSES i n Vol ume 1, shal l i ncl ude t he r emoval of al l t he Cont r act or ' s pl ant and equi pment ei t her f or di sposal or r euse. Pl ant and/ or equi pment and/ or mat er i al s t o be di sposed of shal l onl y be di sposed i n a manner and at l ocat i ons appr oved by t he Cont r act i ng Of f i cer . Unl ess ot her wi se appr oved by t he Cont r act i ng Of f i cer , t he Cont r act or wi l l not be per mi t t ed t o abandon any equi pment i n t he di sposal ar ea or ot her ar eas adj acent t o t he wor ksi t e. Fai l ur e t o pr ompt l y r emove al l pl ant , pi pel i ne, equi pment , and mat er i al s upon compl et i on of t he dr edgi ng wi l l be consi der ed a del ay i n t he compl et i on of t he f i nal c l eanup and demobi l i zat i on wor k. I n such case, t he Gover nment wi l l exer ci se i t s r i ght as st at ed i n Cl ause DEFAULT ( FI XED- PRI CE CONSTRUCTI ON) of Sect i on 00700 CONTRACT CLAUSES i n Vol ume 1 t o r emove any pl ant and/ or equi pment and/ or mat er i al s at t he Cont r act or ' s expense.

1. 15 WORK VI OLATI ONS

Wor k done i n v i ol at i on of t hese speci f i cat i ons or a ver bal or wr i t t en st op or der of t he Cont r act i ng Of f i cer wi l l be consi der ed as unsat i sf act or y pr ogr ess f or pur poses of pr ogr ess payment s i n accor dance wi t h Cl ause PAYMENTS UNDER FI XED- PRI CE CONSTRUCTI ON CONTRACTS of Sect i on 00700 CONTRACT CLAUSES i n Vol ume 1.

PART 2 PRODUCTS ( NOT APPLI CABLE)

PART 3 EXECUTI ON

3. 1 NOTI FI CATI ON OF COAST GUARD

3. 1. 1 Rel ocat i on of Navi gat i on Ai ds

Navi gat i on ai ds l ocat ed wi t hi n or near t he ar eas r equi r ed t o be dr edged wi l l be r emoved, i f necessar y, by t he U. S. Coast Guar d i n advance of dr edgi ng oper at i ons. The Cont r act or shal l not r emove, change t he l ocat i on of , obst r uct , wi l l f ul l y damage, make f ast t o, or i nt er f er e wi t h any ai d of navigation.

SECTI ON 35 20 23 Page 8

3. 1. 2 Dr edgi ng Ai ds

The Cont r act or shal l obt ai n appr oval f r om t he U. S. Coast Guar d f or al l buoys, dr edgi ng ai d mar ker s t o be pl aced i n t he wat er , and dr edgi ng ai d mar ker s af f i xed wi t h a l i ght pr i or t o t he i nst al l at i on. Dr edgi ng ai d mar ker s and l i ght s shal l not be col or ed or pl aced i n a manner t hat t hey wi l l obst r uct or be conf used wi t h navi gat i on ai ds.

3. 2 WORK AREA

The Cont r act or wi l l be per mi t t ed t o excl ude t he publ i c f r om t he wor k ar eas i n t he i mmedi at e v i c i ni t y of hi s dr edgi ng, t r anspor t i ng, and di sposal oper at i ons. The Cont r act or shal l pr event publ i c access t o t he di schar ge end of t he pi pel i ne. The Cont r act or shal l er ect , mai nt ai n, and move as necessar y, a r est r i c t i ve bar r i er ar ound t he di schar ge of t he hydr aul i c pi pel i ne. The bar r i er shal l be const r uct ed so as t o pr event t he publ i c f r om appr oachi ng t he di schar ge f r om any di r ect i on c l oser t han 40 f eet . The Cont r act or shal l post s i gns i n a conspi cuous l ocat i on wi t h t he wor di ng " DANGER - HI GH PRESSURE DI SCHARGE FROM DREDGE" . Enf or cement shal l be t he Cont r act or ' s r esponsi bi l i t y at no addi t i onal cost t o t he Gover nment . The enf or cement shal l be coor di nat ed wi t h l ocal enf or cement agenci es and wi l l be subj ect t o appr oval of t he Cont r act i ng Of f i cer .

3. 2. 1 Access

The Cont r act or shal l be r esponsi bl e f or pr ovi di ng and mai nt ai ni ng access necessar y f or hi s equi pment and pl ant t o and f r om t he wor k s i t e, moor i ng ar ea, and di sposal ar ea. The Cont r act or shal l ascer t ai n t he envi r onment al condi t i ons whi ch can af f ect t he access such as c l i mat e, wi nds, cur r ent s, waves, dept hs, shoal i ng, and scour i ng t endenci es.

3. 2. 2 Pr ot ect i on of Exi st i ng Wat er ways

The Cont r act or shal l conduct hi s oper at i ons i n such a manner t hat mat er i al or ot her debr i s ar e not pushed out s i de of dr edgi ng l i mi t s or ot her wi se deposi t ed i n exi st i ng s i de channel s, basi ns, docki ng ar eas, or ot her ar eas bei ng ut i l i zed by vessel s. The Cont r act or wi l l be r equi r ed t o change hi s met hod of oper at i ons as may be r equi r ed t o compl y wi t h t he above r equi r ement s. Shoul d any bot t om mat er i al or ot her debr i s be pushed i nt o ar eas descr i bed above, as a r esul t of t he Cont r act or ' s oper at i ons, t he same must be pr ompt l y r emoved by and at t he expense of t he Cont r act or t o t he sat i sf act i on of t he Cont r act i ng Of f i cer .

3. 2. 3 Adj acent Pr oper t y and St r uct ur es

Dr edgi ng adj acent t o any st r uct ur e wi l l not be per mi t t ed any c l oser t han 25 f eet of t he st r uct ur es. Any damage t o pr i vat e or publ i c pr oper t y or st r uct ur es r esul t i ng f r om t he di sposal or dr edgi ng oper at i ons shal l be r epai r ed pr ompt l y by t he Cont r act or at hi s expense. Any damage t o st r uct ur es as a r esul t of Cont r act or ' s negl i gence wi l l r esul t i n suspensi on of dr edgi ng and r equi r e pr ompt r epai r at t he Cont r act or ' s expense as a pr er equi s i t e t o t he r esumpt i on of dr edgi ng.

3. 2. 4 Subaqueous Cabl e Cr ossi ngs

The Cont r act or shal l be r esponsi bl e f or ver i f y i ng t he l ocat i ons and dept hs of al l ut i l i t y cr ossi ngs and t ake pr ecaut i ons agai nst damages whi ch mi ght r esul t f r om hi s oper at i ons, especi al l y t he s i nki ng of dr edge spuds and/ or

SECTI ON 35 20 23 Page 9 anchor s i nt o t he channel bot t om, i n t he v i c i ni t y of ut i l i t y cr ossi ngs. I f any damage occur s as a r esul t of hi s oper at i ons, t he Cont r act or wi l l be r equi r ed t o suspend dr edgi ng unt i l t he damage i s r epai r ed and appr oved by t he Cont r act i ng Of f i cer . Cost s of such r epai r s and downt i me of t he dr edge and at t endant pl ant shal l be at t he Cont r act or ' s expense.

3. 3 DREDGE LOCATI ON CONTROL

The Cont r act or shal l have, i n cont i nuous oper at i on on t he dr edge, el ect r oni c posi t i oni ng equi pment t hat wi l l accur at el y and cont i nuousl y comput e and pl ot t he posi t i on and t he deepest penet r at i on of t he dr edge.

Dr edges shal l meet al l of t he f ol l owi ng r equi r ement s, and t hi s i nf or mat i on ( dr edge equi pment posi t i on and dept h) shal l be compi l ed and submi t t ed t o t he Cont r act i ng Of f i cer bi - weekl y:

a. The Cont r act or i s r equi r ed t o have el ect r oni c posi t i oni ng equi pment t hat shal l hor i zont al l y l ocat e t he dr edge when oper at i ng on t he pr oj ect , as wel l as det er mi ne t he dept h of dr edgi ng. Cont i nuous l ocat i ons of t he dr edge shal l be made at al l t i mes dur i ng dr edgi ng.

b. A col or - coded pl ot , i n t he pr oj ect r ef er ence dat um of t he cut t er head, or ot her hydr aul i c or mechani cal dr edgi ng devi ce shal l al so be r ecor ded dai l y depi ct i ng t he ver t i cal and hor i zont al l i mi t s of t he mat er i al dr edged t hat day. Any hor i zont al or ver t i cal dr edge vi ol at i ons shal l be c l ear l y def i ned.

c. The Cont r act or i s r equi r ed t o cal i br at e t he equi pment as r equi r ed by t he manuf act ur er or as r equi r ed by t he Cont r act i ng Of f i cer . Pr oof of cal i br at i on, equi pment and per f or mance dat a, shal l be submi t t ed t o t he Cont r act i ng Of f i cer .

d. For Hor i zont al cont r ol , t he l ocat i on of t he dr edge i s t o be comput ed by coor di nat es wi t h a pr obabl e r ange er r or not t o exceed +/ - 3 f eet . The Cont r act or ' s met hod of hor i zont al l ocat i on of t he dr edge shal l be submi t t ed f or r evi ew. LORAN- C shal l not be per mi t t ed f or l ocat i on cont r ol .

e. The Cont r act or i s al so r equi r ed t o have a dept h of dr edgi ng i ndi cat or accur at e t o wi t hi n one f oot . The i nst r ument used shal l i ndi cat e t he dept h of dr edgi ng at al l t i mes. Thi s equi pment shal l i ncl ude r eal - t i me measur ement of t he wat er ( t i de) l evel . The r epor t ed el evat i on of dr edgi ng shal l be adj ust ed by t he measur ed wat er l evel el evat i on and shal l have a pr obabl e r ange er r or not t o exceed 1- f oot vertical.

f . I f t he dr edge i s out s i de t he dr edgi ng l i mi t s , t he Cont r act or shal l pr ovi de r eason t he dr edge i s out s i de t he dr edge l i mi t s i n t he Cont r act or ' s Qual i t y Cont r ol Repor t f or each occur r ence.

3. 4 DI SPOSAL OF EXCAVATED MATERI AL

3. 4. 1 General

Mat er i al excavat ed may be t r anspor t ed t o and deposi t ed i n t he di sposal ar ea desi gnat ed on t he dr awi ngs. Movi ng of mat er i al t hat r esul t s i n shoal i ng above t he r equi r ed channel el evat i on of - 38 f t MLLW i s pr ohi bi t ed. The pl acement of dr edged mat er i al may be at Dayson I s l and ( D/ A- D) Dr edge Mat er i al Pl acement Faci l i t y ( DMPF) . The appr oxi mat e maxi mum and aver age di st ances i n st at ut e mi l es t o whi ch t he mat er i al wi l l have t o

SECTI ON 35 20 23 Page 10 be transported is as follows:

Disposal Areas Maximum Distance Average Distance

D/A-D 2.8 miles 2.6 miles

3.4.1.1 Disposal Area Details

The Contractor may place dredged material in the D/A-D at the location shown on the drawings and as indicated in Section 01 11 00 SUMMARY OF WORK. The access gate to D/A-D is to be locked at all times during construction of this project.

3.4.2 Location of Pipeline Discharge Area

The pipeline discharge area shall be placed at the location shown on the project drawings as agreed to by the Contracting Officer. Any deviation from the approximate pipeline discharge area shown on the drawings must be approved by the Contracting Officer prior to placement of the dredge pipe in the disposal area. The Contracting Officer may direct periodic movement of the pipeline discharge area as necessary to efficiently maintain the disposal area.

3.4.3 Upland Disposal Area Management

The dredged material may be placed in the Dayson Island (D/A-D) Dredge Material Placement Facility (DMPF). If this disposal location is chosen to be utilized, the dredged material shall be placed in such a manner as to not scour out or damage the crown and side slopes of the existing dikes.

Damages to dikes or scouring of the crown and side slopes shall be repaired by the Contractor to the original pre-award condition at no additional cost to the Government. Upon completion of disposal operations, the Contractor shall proceed to remove the ponded water from the disposal area using weir operations or pumping methods that incorporate discharging water through the weir outflows. Both of these methods shall be required to produce an effluent quality meeting the turbidity requirements specified in Section

01 57 25 TURBIDITY AND DISPOSAL MONITORING.

3.4.3.1 Maximum Height of Dredged Materials at D/A-D

Dredged materials and/or water shall not be placed higher than 23 feet, NAVD88, in the upland disposal area. The Contractor shall constantly monitor the water height while pumping to insure that this clearance is maintained. Materials deposited in the disposal area above the maximum height or outside the disposal area will result in suspension of dredging operations and require the removal of such materials as a prerequisite to the resumption of dredging.

Drainage of areas adjacent to the diked disposal area shall not be blocked or impaired in any manner by the Contractor's operations. The Contractor shall excavate and maintain ditches necessary to prevent blocking or impairing drainage. The ditches shall be of adequate number and size to eliminate all blockage or impairment of drainage adjacent to the diked disposal area.

3.4.3.2 D/A-D Weir Operations

The Contractor shall operate and adjust the weirs in order to ensure that water discharges meeting the turbidity requirements specified in Section

SECTION 35 20 23 Page 11

01 57 25 TURBI DI TY AND DI SPOSAL MONI TORI NG or as di r ect ed by t he Cont r act i ng Of f i cer . The Cont r act or shal l wedge t he r i ser boar ds i n pl ace and seal t he j oi nt s bet ween t he r i ser boar ds, as needed, t o st op f i l l mat er i al or suspended mat er i al f r om passi ng t hr ough t he wei r s.

a. The exi st i ng wei r s shal l be oper at ed by t he Cont r act or t o cont r ol di schar ge of di sposal ar ea ef f l uent dur i ng di sposal and decant i ng oper at i ons. Ri ser boar ds f or t he wei r s ar e st or ed on s i t e i n a secur e l ocat i on. Access t o t he r i ser boar ds wi l l be pr ovi ded by t he Cont r act i ng Of f i cer ' s Repr esent at i ve.

b. The Cont r act or shal l i nst al l r i ser boar ds i n t he wei r s t o a cr est el evat i on whi ch pr oduces an ef f l uent qual i t y meet i ng t he t ur bi di t y r equi r ement s speci f i ed i n Sect i on 01 57 25 TURBI DI TY AND DI SPOSAL MONI TORI NG. Addi t i onal l y, t he wei r cr est el evat i on shal l pr ovi de a mi ni mum of t wo t o t hr ee f eet of pondi ng at t he wei r s dur i ng dr edgi ng.

The Cont r act or shal l wedge t he r i ser boar ds i n pl ace and seal t he end and bet ween- boar d j oi nt s as needed t o pr event soi l s l ur r y and t ur bi d wat er f r om passi ng t hr ough t he wei r s.

c. Upon compl et i on of di sposal oper at i ons, t he Cont r act or shal l pr oceed t o dewat er t he cont ai nment di ke unt i l t he edges of t he ponded wat er have r eceded t o a mi ni mum di st ance of 25 f eet f r om t he c l osest poi nt on t he cont ai nment di ke t oe. Dewat er i ng oper at i ons may be accompl i shed by di t chi ng, pumpi ng or decant i ng t o convey t he ponded wat er f r om t he di sposal ar ea. Dewat er i ng oper at i ons shal l cont i nue f or a mi ni mum of 15 days dur i ng whi ch t i me t he Cont r act or shal l adj ust t he el evat i ons of t he cr est s t o pr ovi de f or dr ai nage of pondi ng whi l e mai nt ai ni ng pr oper t ur bi di t y l evel s wi t hi n t he ef f l uent . The el evat i on adj ust ment t o t he wei r s shal l be t he same on al l wei r s i n t he di sposal ar ea. The wei r r i ser boar ds shal l be r emoved one r ow at a t i me. The next r ow of boar ds shal l not be r emoved unt i l t he wat er l evel i s dr awn down t o not mor e t han one i nch above t he wei r s ' cr est . Thi s pr ocess shal l be cont i nued unt i l t he i nt er f ace wi t h t he suspended dr edged mat er i al i s r eached. Al t er nat el y, i f t he suspended sedi ment i nt er f ace l i es bel ow t he wei r i nver t , dewat er i ng wi l l be consi der ed compl et e when t he wat er sur f ace has been l ower ed t o t he wei r i nver t . Af t er t he i nt er f ace i s r eached, t he Cont r act or shal l cont i nue t o i nspect t he di sposal ar ea unt i l compl et i on of t he wor k under t hi s cont r act , and shal l r emove anot her r ow of boar ds each t i me t he mat er i al has consol i dat ed suf f i c i ent l y so t hat i t wi l l not f l ow f r om t he di sposal ar ea. The ef f l uent f r om t hi s f i nal dr ai nage f or el i mi nat i ng pondi ng shal l meet t he appl i cabl e r equi r ement speci f i ed i n Sect i on 01 57 20 ENVI RONMENTAL PROTECTI ON and/ or Sect i on 01 57 25 TURBI DI TY AND DI SPOSAL

MONITORING.

3. 4. 3. 3 Exi st i ng Dr edge Pi pe Segment

A segment of pi pel i ne has been per manent l y i nst al l ed on t he Dayson I s l and DMPF at t he appr oxi mat e l ocat i on shown on t he dr awi ngs t o pr ovi de vehi cul ar access over t he dr edge di schar ge l i ne dur i ng di sposal oper at i ons. The Cont r act or may connect t o t he end st r uct ur es of t hi s pi pel i ne at t he appr oxi mat e l ocat i on shown on t he dr awi ngs. The exact l ocat i on of t he pi pel i ne segment wi l l be shown t o t he Cont act or i n t he f i el d by t he Cont r act i ng Of f i cer . The t ype of pi pe t he Cont r act or may connect t o i s 24- i nch Duct i l e I r on Pi pe Si ze ( DI PS) Pol yet hyl ene ( PE) 4710 mat er i al wi t h a Di mensi on Rat i o ( DR) of 11 and a wei ght of 76. 229 pound per f oot . The aver age Out si de Di amet er ( OD) i s 25. 80 i nches and t he I nsi de Di amet er ( I D) i s 20. 828 i nches. The mi ni mum wal l t hi ckness i s 2. 345 i nches. See t he

SECTI ON 35 20 23 Page 12

Appendi x at t ached af t er t he end of t hi s sect i on f or pi pe and connect i on i nf or mat i on. The pi pel i ne segment i s appr oxi mat el y 100 l i near f eet . The Cont r act or shal l pr ovi de al l t he necessar y equi pment f or oper at i ons wi t hi n t he DMPF t o di schar ge mat er i al at t he l ocat i on shown on t he dr awi ngs.

3. 4. 4 Ot her Sedi ment Di sposal Locat i ons

The mat er i al excavat ed may be t r anspor t ed el sewher e i f Dayson I s l and ( D/ A- D) Dr edge Mat er i al Pl acement Faci l i t y ( DMPF) i s not chosen, however al l Feder al , St at e and l ocal l aws and r egul at i ons r egar di ng haul i ng and di sposal shal l be appl i ed. I f al t er nat i ve di sposal l ocat i ons ar e chosen, t hey must be i nc l uded i n t he Dr edgi ng and Di sposal Pl an and appr oved by t he Cont r act i ng Of f i cer . The mat er i al may al so be moved el sewher e wi t hi n t he pr oj ect ar ea as l ong as t he mat er i al i s not st acked above t he r equi r ed channel el evat i on of - 38 f t MLLW. However , t he mat er i al shal l not br eak t he sur f ace of t he wat er whi l e i t i s bei ng moved. Bed l evel i ng by dr aggi ng t he bot t om wi t h a dr ag bar or ot her appar at us shal l be al l owed onl y i n t he pr oj ect ar ea shown on t he dr awi ngs. Dr aggi ng i n ar eas out s i de of t he desi gnat ed dr edgi ng ar eas shown on t he dr awi ngs i s speci f i cal l y pr ohi bi t ed wi t hout wr i t t en appr oval of t he Cont r act i ng Of f i cer . Any ot her al t er nat i ve met hod of movement of sedi ment ot her t han dr edgi ng wi t h di sposal at Dayson I s l and ( D/ A- D) must be i ncl uded i n t he Dr edgi ng and Di sposal Pl an and appr oved by t he Cont r act i ng Of f i cer .

3. 4. 5 Pl aci ng of Dr edged Mat er i al

Dur i ng pl acement of dr edged mat er i al i n t he desi gnat ed di sposal ar eas, t he Cont r act or wi l l be r equi r ed t o pr ovi de const ant r adi o cont act bet ween t he dr edge and t he di sposal ar eas and conduct a mi ni mum of t wo i nspect i ons per day of pi pel i ne and di ke. Thi s wi l l enabl e t he Cont r act or ' s per sonnel at t he di sposal ar eas t o i mmedi at el y not i f y t he dr edge i n t he event of di ke or pi pel i ne f ai l ur e. I n t he event of di ke or pi pel i ne f ai l ur e, t he dr edgi ng oper at i ons shal l be i mmedi at el y suspended and r equi r e pr ompt r epai r of t he di ke or pi pel i ne as a pr er equi s i t e t o t he r esumpt i on of dr edgi ng. Dr edgi ng shal l not be r esumed unt i l t he necessar y di ke r epai r or pi pel i ne r epai r s have been compl et ed. The Cont r act or shal l i nf or m t he Cont r act i ng Of f i cer dai l y of condi t i ons of any pr obl ems associ at ed wi t h t he di kes, pi pel i ne, and di sposal ar ea di schar ge. The Cont r act or shal l i nf or m t he Cont r act i ng Of f i cer at what t i me t he pr obl ems wer e f ound and t i me when act i on was t aken t o cor r ect t he pr obl ems. Pl ant down t i me t o meet t he wat er qual i t y st andar ds or t o make di ke or pi pel i ne r epai r s wi l l be at no added cost t o t he Gover nment or a basi s f or t i me ext ensi on.

3. 4. 6 Dr edge Pi pel i nes

3. 4. 6. 1 Dr edge Di schar ge Pi pel i ne

The Cont r act or shal l pl ai nl y mar k t he pi pel i ne access r out es wi t h conspi cuous st akes, t ar get s and/ or buoys t o be mai nt ai ned t hr oughout t he cont r act oper at i ons. A t i ght dr edge di schar ge pi pel i ne shal l be mai nt ai ned t o pr event spi l l i ng of dr edged mat er i al or dr edge wat er out s i de of t he di sposal ar ea. The Cont r act or shal l pr ovi de and mai nt ai n r adi o communi cat i on bet ween t he dr edge and t he di sposal ar eas and t he dr edge and t he Cont r act i ng Of f i cer . The pi pel i ne shal l be i nspect ed at l east t wi ce dai l y f or l eaks.