Amendment_0002_MID_RIVER.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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.

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

Solicitation hereby amended as follow s:

A) Update quantities for base CLINs and optional bid item CLIN as described below .

B) Extend the bid opening date to 20 August 2019 at 2PM Eastern.

C) All other terms and conditions remain unchanged.

D) See attached technical summary of changes.

1. CONTRACT ID CODE PAGE OF PAGES

1 2

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

16C. DATE SIGNED

BY 06-Aug-2019

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 W912PM19B0008

X 9B. DATED (SEE ITEM 11)

11-Jul-2019

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 X is extended, 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 1 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.)

10A. MOD. OF CONTRACT/ORDER NO.

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

6. ISSUED BY

3. EFFECTIVE DATE

06-Aug-2019

CODE

U S ARMY CORPS OF ENGINEERS, WILMINGTON

CONTRACTING - WILMINGTON DISTRICT

69 DARLINGTON AVENUE

WILMINGTON NC 28403

W912PM 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912PM19B0008

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SECTION 00 00 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

SUMMARY OF CHANGES

SECTION 00 10 00 - SOLICITATION, CONTRACT LINE ITEM NUMBER (CLIN) SCHEDULE

The required response date/time has changed from 13-Aug-2019 02:00 PM to 20-Aug-2019 02:00 PM.

CLIN 0006

The pricing detail quantity has increased by 40,000.00 from 50,000.00 to 90,000.00.

CLIN 0007

The pricing detail quantity has increased by 300,000.00 from 240,000.00 to 540,000.00.

CLIN 0008

The pricing detail quantity has increased by 480,000.00 from 690,000.00 to 1,170,000.00.

SUBCLIN 0010AB

The pricing detail quantity has increased by 162,000.00 from 238,000.00 to 400,000.00.

(End of Summary of Changes)

W912PM19B0008

Amendment 0002

Technical Summary of Changes

SPECIFICATIONS

SECTION 35 20 23 – DREDGING

(1) Delete existing SECTION Page 1 through Page 15 in their entirety and replace with revised liked-numbered pages.

(2) Delete existing Attachment 1 Enclosure in its entirety and replace with revised enclosed

Attachment.

DRAWINGS

Delete existing Sheets in their entirety and replace with revised enclosed Sheets: CN107, CN108, CN109, CN110 and CN111.

-- End of Summary of Changes-

Encls as Stated

Wi l m Har bor Mi d- Ri ver Channel s & MOTSU W912PM19B0008 Br unswi ck & New Hanover Count i es, Nor t h Car ol i na

SECTI ON TABLE OF CONTENTS

DI VI SI ON 35 - WATERWAY AND MARI NE CONSTRUCTI ON

SECTI ON 35 20 23

DREDGING

PART 1 GENERAL

1. 1 DESCRI PTI ON OF WORK

1. 2 REFERENCES

1. 3 SUBMI TTALS

1. 4 WORK COVERED BY CONTRACT PRI CE

1. 5 ORDER OF WORK

1. 6 ACCEPTANCE AREAS

1. 6. 1 MOTSU

1. 6. 2 Mi d- Ri ver

1. 7 CHARACTER OF MATERI ALS

1. 8 ENVI RONMENTAL WI NDOWS

1. 9 NOTI CES

1. 10 NAVI GATI ON AI DS

1. 11 MI SPLACED MATERI AL

1. 12 OVERDEPTH AND SI DE SLOPES

1. 12. 1 Over dept h

1. 12. 2 Si de Sl opes

1. 12. 3 Excessi ve Dr edgi ng

1. 13 MEASUREMENT AND PAYMENT

1. 13. 1 Vol ume of Mat er i al Removed

1. 13. 2 Cont r act Dr awi ngs

1. 13. 3 Mont hl y Par t i al Payment s

1. 13. 4 Met hod of Sur vey

1. 13. 4. 1 Si ngl ebeam Sur veyi ng Met hod

1. 13. 4. 2 Sur vey Li nes

1. 14 TI DE DATA

1. 14. 1 Real Ti me Ki nemat i c ( RTK) GPS

1. 14. 2 Ki nemat i c Ti dal Dat um

1. 14. 3 RTK GPS Di sput es

1. 15 PLANT

1. 16 SCOW VOLUME LI MI TS

PART 2 PRODUCTS

PART 3 EXECUTI ON

3. 1 DREDGE POSI TI ONI NG SYSTEM

3. 2 QUANTI TI ES SUMMARY

3. 3 PLACEMENT OF DREDGED MATERI AL

3. 3. 1 Wi l mi ngt on Har bor Ocean Dr edged Mat er i al Di sposal Si t e ( ODMDS)

3. 4 DREDGI NG PLAN

3. 5 DREDGED MATERI AL PLACEMENT PLAN

3. 5. 1 ODMDS

3. 6 EMERGENCY DUMPS

SECTI ON 35 20 23 Page 1

AMENDMENT 0002

Wilm Harbor Mid-River Channels & MOTSU W912PM19B0008 Brunswick & New Hanover Counties, North Carolina

3.7 REQUIRED TRANSPORTATION ROUTE

3.8 DEBRIS SCREENING

3.8.1 Mechanical Dredge

3.8.1 Hopper Dredge

3.8.2 Disposal of Wood and Other Debris

3.9 FENDER TIRES

3.10 COMPLIANCE WITH APPLICABLE NAVIGATION RULES AND REGULATIONS,

MARINE EQUIPMENT

3.10.1 Vessels

3.10.2 Obstructions

3.10.3 Contractor Responsibility

3.11 SURFACE TRANSPORT OF DREDGED MATERIAL

3.12 OVERFLOW

3.13 DREDGE CERTIFICATION

3.14 WATER POLLUTION CONTROL

3.14.1 Contamination of Water

3.14.2 Disposal of Materials

3.15 FLOATING PLANT INSPECTION AND CERTIFICATION

3.16 REPORTING REQUIREMENT

3.17 COMMUNICATIONS

3.18 LOCAL OFFICE

3.19 QUALITY CONTROL

3.20 EXISTING STRUCTURES

3.21 SUBMERGED PIPELINE

3.22 PIPELINE LEAKAGE

ATTACHMENT:

Attachment 1 - Quantities Summary

-- End of Section Table of Contents --

SECTION 35 20 23 Page 2

SECTI ON 35 20 23

DREDGING

PART 1 GENERAL

1. 1 DESCRI PTI ON OF WORK

( a) The wor k consi st s of f ur ni shi ng pl ant , l abor , mat er i al s, and equi pment t o per f or m dr edgi ng and associ at ed wor k as r equi r ed by t hese speci f i cat i ons and t he cont r act dr awi ngs f or Mai nt enance Dr edgi ng - Wi l mi ngt on Har bor Mi d- Ri ver Channel s and Mi l i t ar y Ocean Ter mi nal Sunny Poi nt ( MOTSU) , Br unswi ck and New Hanover Count i es, Nor t h Car ol i na.

( b) Dr edgi ng i s r equi r ed i n t he f ol l owi ng channel r eaches:

Upper Bi g I s l and Channel

Lower Li l l i put Channel Upper Mi dni ght Channel Lower Mi dni ght Channel

MOTSU Appr oach Channel Sout h Ent r ance MOTSU Sout h Whar f Tur ni ng Basi n & Appr oach Channel Sout h t o Cent er Whar f MOTSU Cent er Whar f Tur ni ng Basi n

( c) Dr edgi ng shal l be r equi r ed i n t he f ol l owi ng ar eas i f t he opt i on bi d i t ems ar e exer ci sed:

MOTSU Appr oach Channel Cent er t o Nor t h Whar f & Nor t h Whar f Tur ni ng Basin

( d) The dept h, bot t om wi dt hs and l engt hs t o be dr edged ar e shown on t he dr awi ngs. The dept h, bot t om wi dt hs and l engt hs t o be dr edged ar e based on t he bot t om condi t i ons exi st i ng on t he dat es of t he cont r act sur veys and ar e subj ect t o change based on t he bot t om condi t i ons at t he t i me of t he bef or e dr edge sur veys. The Cont r act or shal l r emove suf f i c i ent mat er i al t o pr ovi de t he dept h and si de s l opes i ndi cat ed by t he t ypi cal sect i ons shown on t he dr awi ngs.

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 ( 2014) Saf et y and Heal t h Requi r ement s Manual

EM 1110- 2- 1003 ( 2013) Hydr ogr aphi c Sur veyi ng

SECTI ON 35 20 23 Page 3

Wilm Harbor Mid-River Channels & MOTSU W912PM19B0008 Brunswick & New Hanover Counties, North Carolina

1.3 SUBMITTALS

Government acceptance is required for submittals with a "G, A" designation;

submittals not having a "G, A" designation are for information only. When used, a designation following the "G, A" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Dredging Plan ; G, A

Dredged Material Placement Plan ; G, A

SD-06 Test Reports

Daily Observer Reports; G, A

1.4 WORK COVERED BY CONTRACT PRICE

(a) The contract price per cubic yard for dredging includes all costs associated with plant, labor, equipment, supplies and materials required for excavation, transportation and placement of all dredged material.

(b) All costs associated with the turtle observer s, including room and board throughout the entire project, shall be included in the appropriate contract price per cubic yard for dredging.

(c) The contract price for mobilization and demobilization shall include all costs associated with the operations for maintenance dredging.

1.5 ORDER OF WORK

The order of work shall be at the discretion of the Contractor unless otherwise directed by the Contracting Officer or his/her designated representative.

1.6 ACCEPTANCE AREAS

1.6.1 MOTSU

The MOTSU basins and channels shall be divided into acceptance areas. The acceptance areas are as follows:

Approach Channel South Entrance South Wharf Turning Basin & Approach Channel South to Center Wharf Center Wharf Turning Basin Approach Channel Center to North Wharf & North Wharf Turning Basin

The Center Wharf Turning Basin shall be subdivided into 3 acceptance sections as shown on the drawings.

1.6.2 Mid-River

Acceptance areas for the Mid-River channels shall be determined by the Contractor. An acceptance area plan for the Mid-River channels shall be submitted to the Contracting Officer or his/her designated representative for review and approval.

SECTION 35 20 23 Page 4

1. 7 CHARACTER OF MATERI ALS

The mat er i al t o be r emoved f r om t he Wi l mi ngt on Har bor and MOTSU mai nt enance dr edgi ng ar eas i s composed pr edomi nant l y of shoal ed mat er i al whi ch has accumul at ed s i nce t he ar eas wer e l ast dr edged. Hi st or i cal l y t he mat er i al r emoved f r om t he var i ous Wi l mi ngt on Har bor channel ar eas has consi st ed pr i mar i l y of sand, s i l t and c l ay. The mat er i al r emoved f r om t he MOTSU channel s and basi ns has hi st or i cal l y been si l t , c l ay, sandy s i l t or sandy c l ay mat er i al . Some sand may be encount er ed i n t he MOTSU channel s and basi ns, but pr i mar i l y at t he channel ent r ances. Wood, met al and ot her sunken debr i s t hat may have become l odged i n t he channel may al so be encount er ed. No subsur f ace i nvest i gat i ons have been made f or mai nt enance dr edgi ng. Hi st or i c subsur f ace i nvest i gat i on dat a f r om pr evi ous dr edgi ng cont r act s ar e avai l abl e f r om t he Wi l mi ngt on Di st r i c t . Request s t o v i ew t he dat a shoul d be submi t t ed v i a Bi dder I nqui r y at t he Pr oj Net websi t e at https://www.projnet.org.

1. 8 ENVI RONMENTAL WI NDOWS

See Sect i on 01 57 19, subpar agr aph Envi r onment al Wi ndows.

1. 9 NOTI CES

( a) The Cont r act or shal l gi ve t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve f i ve ( 5) busi ness days advance wr i t t en not i ce bef or e commenci ng wor k.

( b) The Cont r act or shal l r equest Gover nment bef or e- dr edgi ng sur veys, i n wr i t i ng, f i ve ( 5) busi ness days pr i or t o begi nni ng wor k i n an accept ance section.

( c) The Cont r act or shal l r equest Gover nment af t er - dr edgi ng sur veys, i n wr i t i ng, t hr ee ( 3) busi ness days pr i or t o compl et i on of an accept ance section.

1. 10 NAVI GATI ON AI DS

Ther e may be ai ds t o navi gat i on wi t hi n t he pr oj ect boundar i es. Some, or al l , of such ai ds t o navi gat i on may need t o be r emoved f or t he accompl i shment of t he cont r act wor k. Bef or e t he commencement of dr edgi ng, i t i s t he r esponsi bi l i t y of t he Cont r act or t o pr ovi de t he U. S. Coast Guar d ( USCG) and any ot her r esponsi bl e par t i es not i f i cat i on 5 weeks pr i or t o needi ng a navi gat i on ai d moved. The USCG may need t o br i ng vessel s f r om out of st at e t o move l ar ger ai ds t o navi gat i on and t he Cont r act or shoul d r equest t hi s ser vi ce as soon as pr act i cabl e, but i n al l cases, at l east 5 weeks f r om t he st ar t of dr edgi ng. Fai l ur e t o not i f y t he Coast Guar d wi t hi n t he r equi r ed t i mef r ame may r esul t i n pr oj ect del ays.

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 ai ds t o navi gat i on wi t hout expr ess di r ect i on f r om t he USCG. I f t he USCG det er mi nes t hey cannot r espond t o t he Cont r act or ' s r equest and i f t he Cont r act or has appr opr i at e equi pment onsi t e, t he USCG may r equest t he Cont r act or t o r el ocat e t he navi gat i on ai d( s) f or dr edgi ng. The Cont r act or shal l onl y r el ocat e t he navi gat i on ai d( s) and/ or pl ace t he navi gat i on ai d( s) back t o i t s char t ed posi t i on under t he di r ect super vi s i on of t he USCG. I f t he USCG and t he Cont r act or ar e unabl e t o r el ocat e navi gat i on ai ds, t he Cont r act or shal l dr edge as c l ose t o t he navi gat i on ai ds as t he dr edge capt ai n det er mi nes t o be saf e.

SECTI ON 35 20 23 Page 5

The USCG poi nt of cont act i s t he USCG Nor t h Car ol i na Ai ds t o Navi gat i on Of f i cer at ( 252) - 247- 4525, or al t er nat el y, Sect or Nor t h Car ol i na Wat er ways Management at ( 910) 772- 2230.

1. 11 MI SPLACED MATERI AL

( a) Any mat er i al , i ncl udi ng mat er i al l ost t hr ough l eaks, i n pi pel i nes, hopper s or scows, t hat i s deposi t ed or al l owed t o f l ow el sewher e t han i n pl aces desi gnat ed or appr oved by t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve wi l l be consi der ed as mi spl aced mat er i al .

Mi spl aced mat er i al i ncl udes dr edged mat er i al deposi t ed out s i de t he Ocean Dr edged Mat er i al Di sposal Si t e ( ODMDS) pl acement zone and any dr edged mat er i al mounded hi gher t han el evat i on - 30 f eet MLLW wi t hi n t he ODMDS pl acement zone.

I f , i n t he opi ni on of t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve, t hi s mi spl aced mat er i al wi l l i n any way be a hazar d t o navi gat i on, t o nor mal act i v i t i es of t he publ i c, or t o t he envi r onment , t he Cont r act or shal l consul t wi t h t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve t o det er mi ne how t o r emove t he mi spl aced mat er i al wi t h mi ni mal addi t i onal i mpact . The r emoval of such mi spl aced mat er i al shal l be compl et ed t o t he sat i sf act i on of t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve at t he Cont r act or ' s expense. No payment wi l l be made f or mi spl aced mat er i al .

( b) I f t he Cont r act or l oses, dumps, t hr ows over boar d, s i nks, or mi spl aces any pl ant , machi ner y, or appl i ances, whi ch i n t he opi ni on of t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve may be danger ous t o or obst r uct navi gat i on, t he Cont r act or shal l r ecover and r emove t he same wi t h t he ut most di spat ch. The Cont r act or shal l gi ve i mmedi at e not i ce, wi t h descr i pt i on and l ocat i on of such obst r uct i ons t o t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve or i nspect or , and when r equi r ed, shal l mar k or buoy such obst r uct i on unt i l t he same i s r emoved. Shoul d t he Cont r act or r ef use, negl ect , or del ay compl i ance wi t h t he above r equi r ement s, such obst r uct i ons may be r emoved by t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve and t he cost of such r emoval may be deduct ed f r om any money due or t o become due t he Cont r act or or may be r ecover ed under t he Cont r act or ' s bond. The l i abi l i t y of t he Cont r act or f or t he r emoval of a vessel wr ecked or sunk wi t hout f aul t or negl i gence shal l be l i mi t ed t o t hat pr ovi ded i n Sect i ons 15, 19, and 20 of t he Ri ver and Har bor Act of 3 Mar ch 1899 ( 33 U. S. C. 410 et . seq. ) .

1. 12 OVERDEPTH AND SI DE SLOPES

1. 12. 1 Over dept h

Thi s cont r act al l ows over dept h dr edgi ng. No payment wi l l be made f or any mat er i al t hat i s r emoved f r om bel ow t he al l owabl e over dept h or out s i de of t he i ndi cat ed s i de s l opes.

1. 12. 2 Si de Sl opes

Si de s l ope dr edgi ng i s not r equi r ed. Ver t i cal l y cut t he s l ope t o t he r equi r ed dept h at t he channel t oe. Mat er i al r emoved f r om out si de t he r equi r ed sect i on, shown on t he cont r act dr awi ngs as l y i ng bet ween t he ver t i cal cut and maxi mum pay s l ope pl ane ( 1 ver t i cal on 3 hor i zont al ) , wi l l be comput ed and pai d f or at t he cont r act uni t pr i ce. I n comput i ng t he l i mi t i ng quant i t y of s i de s l ope dr edgi ng, an over dept h of 2 f eet , measur ed

SECTI ON 35 20 23 Page 6 ver t i cal l y , wi l l be used. Payment wi l l not be made f or mat er i al r emoved out s i de t he channel t oe i n speci f i ed l ocat i ons shown on t he dr awi ngs.

1. 12. 3 Excessi ve Dr edgi ng

Mat er i al t aken f r om beyond t he l i mi t s as ext ended i n subpar agr aph, Si de Sl opes and i n subpar agr aph, Over dept h wi l l be deduct ed f r om t he t ot al amount dr edged as excessi ve dr edgi ng and wi l l not be cr edi t ed. The Cont r act or i s advi sed t hat dr edgi ng conduct ed out s i de t he channel wi dt h, dept h and si de s l opes i ndi cat ed by t he t ypi cal sect i ons shown on t he dr awi ngs coul d be consi der ed a v i ol at i on of st at e and f eder al l aws, r equi r i ng r est or at i on, mi t i gat i on, or f i nes. Any addi t i onal cost s i ncur r ed by t he Cont r act or , or r equi r ement s f or r est or at i on or mi t i gat i on r esul t i ng f r om dr edgi ng out s i de t he l i mi t s i dent i f i ed i n t he pl ans shal l not be char ged t o t he gover nment . Not hi ng her ei n shal l be const r ued t o pr event payment f or t he r emoval of shoal s per f or med i n accor dance wi t h Sect i on 01 10 00. 10 38: SUPPLEMENTARY SPECI AL CONTRACT REQUI REMENTS, par agr aph

FI NAL EXAMI NATI ON AND ACCEPTANCE.

1. 13 MEASUREMENT AND PAYMENT

1. 13. 1 Vol ume of Mat er i al Removed

The t ot al vol ume of al l mat er i al r emoved and t o be pai d f or under t hi s cont r act wi l l be measur ed by comput i ng t he di f f er ence i n vol ume bet ween t he bot t om sur f ace shown by soundi ngs of t he l ast sur vey bef or e dr edgi ng each accept ance sect i on and t he bot t om sur f ace shown by t he soundi ngs of a sur vey made as soon as pr act i cabl e af t er compl et i on of each accept ance sect i on. Vol umes wi l l be comput ed by t he Gover nment . The cal cul at i ons wi l l excl ude any vol ume of mat er i al r emoved f r om beyond t he l i mi t s of t he s i de s l opes and/ or bel ow t he al l owabl e over dept h and wi l l be f ur t her r educed by t he vol ume of any mi spl aced mat er i al . Al l f i nal pay quant i t i es shal l be det er mi ned f r om bef or e and af t er dr edgi ng sur veys conduct ed by t he Gover nment . Al l wor k connect ed wi t h excavat i on, t r anspor t at i on and pl acement of dr edged mat er i al shal l be i ncl uded i n t he cont r act pr i ce f or "dredging".

1. 13. 2 Cont r act Dr awi ngs

The dr awi ngs r ef er r ed t o i n Sect i on 00 01 15: LI ST OF DRAWI NGS, ar e bel i eved t o r epr esent t he condi t i ons exi st i ng on t he dat es of t he sur veys.

ASCI I dat a f i l es i n t he xyz f or mat of t he condi t i on sur veys ar e avai l abl e on t he FedBi zOps ( ht t p: / / www. f bo. gov) webpage. The bot t om condi t i ons wi l l be det er mi ned by bef or e dr edgi ng sur veys pr i or t o commencement of dr edgi ng and new maps r epr esent i ng t he bot t om condi t i ons of t he ar ea t o be dr edged wi l l be f ur ni shed t o t he Cont r act or . The new maps wi l l show ar eas t o be dr edged al ong wi t h r evi s i ons t o t he dr edgi ng ar eas i f needed. Det er mi nat i on of quant i t i es r emoved and t he deduct i ons made t her e f r om t o det er mi ne quant i t i es by i n- pl ace measur ement t o be pai d f or i n t he ar eas speci f i ed, af t er havi ng once been made, wi l l not be r eopened, except on evi dence of col l usi on, f r aud, or obvi ous er r or .

1. 13. 3 Mont hl y Par t i al Payment s

Mont hl y par t i al payment s wi l l be based on est i mat ed quant i t i es det er mi ned by t he i nf or mat i on f r om soundi ngs t aken behi nd t he dr edge. Di scr epanci es i n t he est i mat ed amount s wi l l be adj ust ed as r equi r ed t o conf or m wi t h vol umes comput ed i n accor dance wi t h subpar agr aph Vol ume of Mat er i al Removed.

Est i mat ed quant i t i es cal cul at ed shal l be based upon sat i sf act or y

SECTI ON 35 20 23 Page 7 hydr ogr aphi c sur veys per f or med by t he Cont r act or i n a manner agr eed upon by t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve.

1. 13. 4 Met hod of Sur vey

Hydr ogr aphi c sur veys wi l l be accompl i shed by t he Gover nment t o det er mi ne t he vol ume of mat er i al r emoved under t hi s cont r act . The sur veys wi l l be accompl i shed wi t h t he use of an aut omat ed sur vey syst em i nst al l ed aboar d one of t he Wi l mi ngt on Di st r i c t ' s sur vey vessel s. Ver t i cal dat um f or al l hydr ogr aphi c sur veys wi l l be mean l ower l ow wat er .

1. 13. 4. 1 Si ngl ebeam Sur veyi ng Met hod

The si ngl ebeam sur vey syst em wi l l be used. Hor i zont al l ocat i on of sur vey l i nes and dept h soundi ng poi nt s wi l l be det er mi ned by t he use of an aut omat ed posi t i oni ng syst em ut i l i z i ng RTK GPS ( r eal t i me ki nemat i c gl obal posi t i oni ng syst em) . Dept h soundi ngs wi l l be t aken usi ng a dual f r equency ( 200/ 28 KHz) dept h sounder . The f at homet er wi l l be cal i br at ed usi ng vel oci t y cast s t o account f or var i at i ons of t he speed of sound i n t he wat er at t he sur vey s i t e and compar ed t o per i odi c bar checks f or consi st ency.

Payment f or mat er i al r emoved f r om al l ar eas t o be dr edged wi l l be based on 28 kHz dept h soundi ngs. The echo sounder syst em wi l l be cal i br at ed at t he j ob s i t e and ver i f i ed f or accur acy t wi ce dai l y.

1. 13. 4. 2 Sur vey Li nes

Dept h soundi ngs wi l l be secur ed by r unni ng sur vey l i nes par al l el t o t he l ongi t udi nal axi s of t he channel . A suf f i c i ent number of l i nes wi l l be r un t o assur e good cover age of t he bot t om. Cr oss check l i nes wi l l be r un at 500' i nt er val s. A mi ni mum of t wo ( 2) l i nes wi l l be r un wi t hi n t he gr ade sl opes. The af t er dr edgi ng sur vey wi l l be per f or med i n t he same manner as t he bef or e dr edgi ng sur vey.

1. 14 TI DE DATA

1. 14. 1 Real Ti me Ki nemat i c ( RTK) GPS

Real Ti me Ki nemat i c ( RTK) GPS wi l l be used by t he Cor ps of Engi neer s t o det er mi ne r eal t i me wat er l evel s ( t i de cor r ect i ons) i n t he Wi l mi ngt on Har bor and MOTSU Pr oj ect ar eas. I f t he Cont r act or desi r es t o obt ai n t hese cor r ect i ons, he/ she shal l be r esponsi bl e f or pr ovi di ng navi gat i on equi pment capabl e of ut i l i z i ng t he t r ansmi t t ed s i gnal s f r om Nor t h Car ol i na Geodet i c Sur veys Cont i nuousl y Oper at i ng Ref er ence St at i on Net wor k. Cont act Mr . Bar t Al l i good ( Syst em Admi ni st r at or ) f or access at 919- 948- 7834.

1. 14. 2 Ki nemat i c Ti dal Dat um

Hypack' s Hydr ogr aphi c Sur vey Sof t war e I nl and Wat er ways and Sounds VDat um Model wi l l be used t o conver t el evat i ons f r om t he r ef er enced El l i psoi d t o Mean Lower Low Wat er ( 1983- 2001) . A Ti dal Dat um Di agr am showi ng t he r el at i onshi p bet ween NAVD 88 and Mean Lower Low Wat er wi l l be pr ovi ded upon request.

1. 14. 3 RTK GPS Di sput es

Any di scussi ons or di sput e r egar di ng t he val i di t y and use of t hi s met hod of sur veyi ng and det er mi ni ng of r eal t i me t i des must be r esol ved pr i or t o t he commencement of dr edgi ng on t hi s pr oj ect .

SECTI ON 35 20 23 Page 8

* * * AMENDMENT 0002* * *

1. 15 PLANT

Dr edgi ng by hopper dr edge, mechani cal dr edge ( c l amshel l , dr agl i ne or di pper ) or hydr aul i c cut t er suct i on dr edge, wi l l be al l owed f or t he Mi d- Ri ver Channel s. MOTSU basi ns and channel s shal l be dr edged by mechani cal dr edge ( c l amshel l , dr agl i ne or di pper ) . Mat er i al r emoved f r om t he Mi d- Ri ver channel s by cut t er suct i on dr edge t o be pl aced i n t he Ocean Dr edged Mat er i al Di sposal Si t e ( ODMDS) shal l be t r anspor t ed i n scows.

Over f l ow of scows t o obt ai n economi c l oads wi l l be al l owed i n t he Wi l mi ngt on Har bor f eder al navi gat i on channel r eaches. Over f l ow of scows wi l l not be al l owed i n t he MOTSU basi ns and channel s. Speci f i c r equi r ement s f or hopper dr edges, such as t ur t l e def l ect or devi ces, i nf l ow basket s, hopper dr edge oper at i on, obser ver s, and pr ot ocol f or r ecor di ng and r epor t i ng t he t aki ng of any sea t ur t l e or st ur geon par t s, ar e descr i bed i n

SECTION 01 57 19: TEMPORARY ENVI RONMENTAL CONTROLS.

* * * AMENDMENT 0002* * *

1. 16 SCOW VOLUME LI MI TS

Scow l oad vol umes wi l l be r est r i c t ed t o 12, 000 cubi c yar ds ( CY) f or t he MOTSU basi ns and channel s. Ther e ar e no scow l oad vol ume r est r i c t i ons f or t he Mi d- Ri ver Channel s.

PART 2 PRODUCTS

Not used.

PART 3 EXECUTI ON

3. 1 DREDGE POSI TI ONI NG SYSTEM

Each dr edge shal l be equi pped wi t h an el ect r oni c posi t i oni ng syst em, capabl e of posi t i oni ng t he dr edge i n t he channel wi t h accur aci es as shown i n Tabl e 3. 1 Mi ni mum Per f or mance St andar ds f or Cor ps of Engi neer s Hydr ogr aphi c Sur veys ( Mandat or y) i n USACE EM 1110- 2- 1003. Thi s posi t i oni ng syst em shal l be est abl i shed, oper at ed, and mai nt ai ned by t he Cont r act or dur i ng t he ent i r e per i od of t he cont r act . The posi t i oni ng syst em shal l be used t o pr eci sel y l ocat e t he dr edge, cut t er head, dr agar m, and/ or dr edge bucket and shal l be capabl e of di spl ayi ng and r ecor di ng t he dr edge' s l ocat i on i n an accept abl e coor di nat e syst em whi ch can be r el at ed t o, or i s di r ect l y based on, t he Nor t h Car ol i na Lamber t St at e Pl ane Coor di nat e Syst em ( NAD 1983, St at e Pl ane f eet ) . Navi gat i on channel cont r ol , and shor e st at i on cont r ol , i f r equi r ed, wi l l be pr ovi ded t o t he Cont r act or i n t he same Nor t h Car ol i na Coor di nat e Syst em pr i or t o t he commencement of wor k. I t shal l be t he r esponsi bi l i t y of t he Cont r act or t o have t he posi t i oni ng/ navi gat i on syst em r evi ewed, i nspect ed and appr oved by t he Cont act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve pr i or t o t he commencement of wor k.

3. 2 QUANTI TI ES SUMMARY

The quant i t i es l i s t ed i n At t achment 1 - Quant i t i es Summar y i ncl ude t he vol umes pr esent at t he t i me of t he sur veys i ndi cat ed i n t he cont r act dr awi ngs pl us shoal i ng ant i c i pat ed bef or e dr edgi ng begi ns.

Shoul d t he t ot al quant i t y of mat er i al t o be pai d f or under t he cont r act exceed t he l i mi t est abl i shed i n t he c l ause ent i t l ed " VARI ATI ONS I N ESTI MATED QUANTI TI ES - DREDGI NG" , addi t i onal t i me wi l l be al l owed at t he

SECTI ON 35 20 23 Page 9 r at e of one ( 1) cal endar day f or t he aver age dai l y pr oduct i on r at e achi eved by t he equi pment used on t he pr oj ect f or excavat i on i n excess of t he est abl i shed l i mi t .

3. 3 PLACEMENT OF DREDGED MATERI AL

The Gover nment f ur ni shed pl acement ar ea avai l abl e t o t he Cont r act or f or pl acement of dr edged mat er i al f r om t he MOTSU basi ns and channel s and f r om t he Mi d- Ri ver channel s i s t he Ocean Dr edged Mat er i al Di sposal Si t e ( ODMDS) .

3. 3. 1 Wi l mi ngt on Har bor Ocean Dr edged Mat er i al Di sposal Si t e ( ODMDS)

* * * AMENDMENT 0002* * *

Pl acement of dr edged mat er i al f r om t he Mi d- Ri ver channel s and t he MOTSU basi ns and channel s shal l be i n t he Ocean Dr edged Mat er i al Di sposal Si t e ( ODMDS) wi t hi n t he desi gnat ed pl acement zones shown on t he dr awi ngs.

Pl acement of dr edged mat er i al i n t he ODMDS shal l be i n compl i ance wi t h t he Wi l mi ngt on ODMDS Si t e Management and Moni t or i ng Pl an ( SMMP) . The Wi l mi ngt on ODMDS SMMP can be f ound at :

http://www.saw.usace.army.mil/Missions/Navigation/Dredging/Wilmington-Harbor/

Pl acement shal l be conduct ed i n such a manner t hat wat er above t he dumped mat er i al wi l l have a mi ni mum cl ear ance of 30 f eet at mean l ower l ow wat er ( MLLW) . I n or der t o maxi mi ze ODMDS capaci t y and mi ni mi ze moundi ng of mat er i al , t he dumps shal l be scat t er ed t hr oughout t he desi gnat ed pl acement zones and not pl aced r epeat edl y at one l ocat i on. Thi s shal l be accompl i shed by di v i di ng t he pl acement zone i nt o quadr ant s and pl aci ng successi ve dump l oads i nt o successi ve quadr ant s. The Cont r act i ng Of f i cer , or hi s/ her desi gnat ed r epr esent at i ve can di r ect t he pl acement of mat er i al wi t hi n any por t i on of t he pl acement zones.

* * * AMENDMENT 0002* * *

3. 4 DREDGI NG PLAN

Pr i or t o commencement of dr edgi ng and pl acement oper at i ons, t he Cont r act or shal l submi t t o t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve a pl acement pl an f or dr edged mat er i al . The pl an shal l i ncl ude but not be l i mi t ed t o t he f ol l owi ng:

a. i dent i f i cat i on of accept ance ar eas and t he or der i n whi ch t hey wi l l be dr edged.

b. equi pment t o be used f or dr edgi ng each accept ance ar ea.

c . est i mat ed amount of t i me r equi r ed t o accompl i sh t he dr edgi ng i n each accept ance ar ea.

3. 5 DREDGED MATERI AL PLACEMENT PLAN

Pr i or t o commencement of dr edgi ng and pl acement oper at i ons, t he Cont r act or shal l submi t t o t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve a pl acement pl an f or dr edged mat er i al .

3. 5. 1 ODMDS

The pl an shal l i ncl ude but not be l i mi t ed t o t he f ol l owi ng:

SECTI ON 35 20 23 Page 10

a. pr ocedur es f or maxi mi zi ng t he capaci t y of t he ODMDS pl acement zones and mi ni mi zi ng moundi ng of mat er i al ( r ef er ence subpar agr aph Wi l mi ngt on Har bor Ocean Dr edged Mat er i al Di sposal Si t e ( ODMDS) ) and ant i c i pat ed pl acement volume.

b. pr ocedur es f or r ecor di ng ver i f i cat i on of ocean pl acement i n t he ODMDS pl acement zones and ensur i ng mi ni mum cl ear ance i s pr ovi ded ( see par agr aph DREDGE POSI TI ONI NG SYSTEM, Sect i on 35 20 23. 12 NATI ONAL DREDGI NG QUALI TY MANAGEMENT PROGRAM SCOW - MONI TORI NG PROFI LE and Sect i on 35 20 23. 23

NATI ONAL DREDGI NG QUALI TY MANAGEMENT PROGRAM HOPPER DREDGE) .

c. ant i c i pat ed cycl e t i mes and pl acement vessel r out e t o and f r om t he ODMDS ( r ef er ence par agr aph REQUI RED TRANSPORTATI ON ROUTE) .

3. 6 EMERGENCY DUMPS

I f a vessel exper i ences an emer gency s i t uat i on whi ch causes a dumpi ng of mat er i al out s i de of t he desi gnat ed pl acement zones, t he Cont r act or shal l ver bal l y not i f y t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve no l at er t han t he next wor k day. The Cont r act or shal l submi t , i n wr i t i ng wi t hi n t wo ( 2) days of t he emer gency dump, a st at ement det ai l i ng t i me of dump, l ocat i on of dump, and r eason dump occur r ed.

Mat er i al t hat i s mi spl aced due t o an emer gency dump si t uat i on i s subj ect t o r emoval by t he Cont r act or at hi s own expense upon t he r equest of t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve.

3. 7 REQUI RED TRANSPORTATI ON ROUTE

For sur f ace vessel t r anspor t at i on of dr edged mat er i al t o t he Ocean Dr edged Mat er i al Di sposal Si t e ( ODMDS) pl acement zones, t he vessel ( s) shal l t r avel i n t he buoyed navi gat i on channel unt i l t hey ar e seawar d of Buoy " 2" . These vessel s shal l r et ur n t o t he s i t e of wor k by t he same r out e.

3. 8 DEBRI S SCREENI NG

The Cont r act or may encount er wood and ot her debr i s wi t hi n t he dr edgi ng l i mi t s. The wooden debr i s may consi st of t r ee t r unks, st umps, r oot s, and l i mbs. The si ze of t he wood may var y consi der abl y. Al l excavat ed mat er i al r emoved by mechani cal dr edge ( c l amshel l , dr agl i ne, or di pper ) or hopper dr edge f r om t he Mi d- Ri ver channel s shal l be scr eened f or debr i s pr i or t o pl acement i n t he desi gnat ed pl acement zone of t he Ocean Dr edged Mat er i al Di sposal Si t e. Debr i s scr eeni ng i s not r equi r ed f or dr edgi ng of MOTSU basi ns and channel s.

3. 8. 1 Mechani cal Dr edge

I f a mechani cal dr edge i s used f or excavat i on, t he Cont r act or shal l desi gn and f ur ni sh a debr i s scr een wi t h a maxi mum hol e openi ng s i ze of 15 i nches squar e. The scr een shal l be desi gned and const r uct ed f or r epeat ed use and mai nt ai n st r uct ur al i nt egr i t y when subj ect ed t o r epeat ed pl acement of excavat ed mat er i al f r om t he r i ver bot t om. The Cont r act or shal l submi t a debr i s scr een desi gn al ong wi t h pl ans and speci f i cat i ons t o t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve f or r evi ew and appr oval pr i or t o commencement of dr edgi ng. The Cont r act or shal l be r equi r ed t o obt ai n t he Cont r act i ng Of f i cer ' s or hi s/ her desi gnat ed r epr esent at i ve' s wr i t t en appr oval of t he debr i s scr een a mi ni mum f i ve ( 5) days pr i or t o commencement of dr edgi ng. Al l cost s associ at ed wi t h desi gn, const r uct i on, depl oyment , oper at i on, and mai nt enance of t he debr i s scr een and di sposal of debr i s shal l be i ncl uded i n t he appr opr i at e cont r act uni t pr i ce f or " Dr edgi ng" .

SECTI ON 35 20 23 Page 11

3. 8. 1 Hopper Dr edge

I nf l ow basket s or scr eens over t he hopper i nf l ow( s) shal l be mai nt ai ned i n oper at i onal condi t i on t hr oughout t he per i od of wor k. Debr i s shal l be cl eaned f r om t he basket s or scr eens and di sposed of i n accor dance wi t h subpar agr aph, Di sposal of Wood and Ot her Debr i s.

3. 8. 2 Di sposal of Wood and Ot her Debr i s

Wood and ot her debr i s shal l be pl aced i n a separ at e bar ge or ot her conveyance and di sposed of i n a publ i c or pr i vat e upl and di sposal ar ea i n accor dance wi t h al l appl i cabl e Feder al , St at e, and l ocal l aws and r egul at i ons. Bi dder s ar e expect ed t o i nvest i gat e t he avai l abi l i t y of di sposal ar eas and any r est r i c t i ons associ at ed wi t h each pr i or t o submi t t i ng t hei r bi ds.

3. 9 FENDER TI RES

Al l f ender t i r es used on Cont r act or dr edgi ng equi pment or vessel s shal l be per manent l y mar ked by t he Cont r act or wi t h t he company name and equi pment pl ant name. Al l f ender t i r es shal l be secur el y at t ached t o pr event t hem f r om f al l i ng over boar d. The Cont r act or shal l be r esponsi bl e f or damages t o f i shi ng net s or ot her c l ai ms t hat ar e due t o any l oss of equi pment such as f ender s, cabl es, anchor s, pi pe, et c.

3. 10 COMPLI ANCE WI TH APPLI CABLE NAVI GATI ON RULES AND REGULATI ONS, MARI NE

EQUIPMENT

3. 10. 1 Vessel s

The Cont r act or shal l ascer t ai n t hat al l vessel s used i n per f or mance of t hi s cont r act ar e commanded, equi pped, navi gat ed and/ or oper at ed i n st r i c t compl i ance wi t h t he gener al r egul at i ons of t he Depar t ment of t he Ar my and of t he U. S. Coast Guar d, i ncl udi ng but not l i mi t ed t o, appl i cabl e saf et y, envi r onment al , and navi gat i onal r ul es and r egul at i ons i n t he Code of Feder al Regul at i ons.

3. 10. 2 Obst r uct i ons

I nst al l at i ons ( i . e. , pi pel i nes, pi pel i ne r i ser s and/ or boost er st at i ons) pl aced by t he Cont r act or on or over t he seabed of t he wor k ar ea ar e obst r uct i ons or st r uct ur es i n accor dance wi t h Ti t l e 33 CFR subpar t 67. 01.

Such i nst al l at i ons or por t i ons t her eof , ar e subj ect t o appl i cabl e r egul at i ons set f or t h i n Ti t l e 33, par t s, 64, 66, and 67.

3. 10. 3 Cont r act or Responsi bi l i t y

The r esponsi bi l i t y f or not i f y i ng t he Commander , Fi f t h Coast Guar d Di st r i c t , per Ti t l e 33 CFR subpar t 67. 40 and t he r esponsi bi l i t y of secur i ng necessar y i nst al l at i on appr oval s t her ef r om, r est s wi t h t he Cont r act or . The f ur t her r esponsi bi l i t y f or mai nt ai ni ng and oper at i ng hi s j ob s i t e i nst al l at i on and vessel s i n accor dance wi t h appl i cabl e l aws al so r est s wi t h t he Cont r act or .

3. 11 SURFACE TRANSPORT OF DREDGED MATERI AL

Tr anspor t at i on of dr edged mat er i al by bar ges and scows t o t he pl acement ar ea wi l l be al l owed f or t hi s cont r act . Al l di sposal vessel s shal l be equi pped wi t h Nat i onal Dr edgi ng Qual i t y Management Pr ogr am Syst em. See

SECTI ON 35 20 23 Page 12

Section 35 20 23. 12 NATI ONAL DREDGI NG QUALI TY MANAGEMENT PROGRAM SCOW - MONI TORI NG PROFI LE. Al l scows shal l have t hei r pocket s pr ovi ded wi t h pr oper door s or appl i ances t o pr event l eakage of mat er i al . Fai l ur e t o r epai r l eaks wi l l r esul t i n suspensi on of dr edgi ng. I f suspensi on occur s, dr edgi ng wi l l not be al l owed t o r esume unt i l t he Cont r act or has pr ompt l y r epai r ed t he scow t o t he sat i sf act i on of t he Cont r act i ng Of f i cer or t hei r Desi gnat ed Representative.

3. 12 OVERFLOW

Over f l ow of scows t o obt ai n economi c l oads wi l l be al l owed i n t he Wi l mi ngt on Har bor f eder al navi gat i on channel r eaches. Over f l ow of scows wi l l not be al l owed i n t he MOTSU basi ns and channel s. Over f l ow of scows wi l l not be al l owed dur i ng t r anspor t t o t he ODMDS f r om ei t her t he Wi l mi ngt on Har bor f eder al navi gat i on channel r eaches or t he MOTSU basi ns and channel s.

3. 13 DREDGE CERTI FI CATI ON

Thi s cont r act r equi r es t he use of t he Dr edgi ng Qual i t y Management Pr ogr am Pr i or t o submi t t i ng bi d, see SECTI ON 35 20 23. 12: NATI ONAL DREDGI NG QUALI TY

MANAGEMENT PROGRAM SCOW- MONI TORI NG PROFI LE

3. 14 WATER POLLUTI ON CONTROL

3. 14. 1 Cont ami nat i on of Wat er

The Cont r act or shal l not pol l ut e t he channel s or pl acement ar ea wi t h pai nt s, f uel s, oi l , bi t umens, cal c i um chl or i des, i nsect i c i des, her bi c i des, or any ot her subst ance, whi ch may be consi der ed har mf ul t o f i sh, shel l f i sh, or wi l dl i f e. I t i s t he r esponsi bi l i t y of t he Cont r act or t o i nvest i gat e and compl y wi t h al l appl i cabl e Feder al , St at e, Count y, and muni c i pal l aws concer ni ng pol l ut i on of r i ver s and st r eams and heal t h pr ot ect i on of shel l f i sh, f i sh, and domest i c ani mal s.

3. 14. 2 Di sposal of Mat er i al s

The met hods and l ocat i ons of di sposal of mat er i al s , wast es, ef f l uent s, t r ash, gar bage, oi l , gr ease, chemi cal s, et c. , shal l be such t hat har mf ul agent s wi l l not ent er t he wat er way, ocean, and sound by er osi on and shal l be subj ect t o appr oval by t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed representative.

3. 15 FLOATI NG PLANT I NSPECTI ON AND CERTI FI CATI ON

Fl oat i ng pl ant i nspect i on and cer t i f i cat i on shal l compl y wi t h par agr aph

19. A. 01 of USACE EM 385- 1- 1.

3. 16 REPORTI NG REQUI REMENT

The Cont r act or shal l pr epar e dai l y i n t he Qual i t y Cont r ol Syst em ( QCS) a dr edge r epor t and a c i v i l r epor t , and expor t t o t he Resi dent Management Syst em ( RMS) by 10: 00 a. m. t he f ol l owi ng day.

3. 17 COMMUNI CATI ONS

The Cont r act or shal l f ur ni sh and mai nt ai n a r adi ot el ephone and a cel l ul ar phone on t he dr edge( s) t hr oughout t he per i od of t he cont r act . The pl ant wi l l not be al l owed t o begi n wor k unt i l t he VHF mar i ne band r adi o i s

SECTI ON 35 20 23 Page 13 i nst al l ed and i n good wor ki ng or der and a pr oper l y oper at i ng cel l ul ar phone i s on boar d. The VHF mar i ne band r adi o shal l be capabl e of oper at i on f r om t he dr edge' s mai n cont r ol st at i on and capabl e of t r ansmi t t i ng and r ecei v i ng on a f r equency or f r equenci es wi t hi n t he 156- 162 megaher t z band usi ng t he c l asses of emi ssi ons desi gnat ed by t he Feder al Communi cat i ons Commi ssi on.

3. 18 LOCAL OFFI CE

The Cont r act or shal l mai nt ai n an of f i ce i n t he i mmedi at e v i c i ni t y of t he pr oj ect . Thi s of f i ce shal l be l and based and equi pped wi t h at l east one oper abl e t el ephone and f ax machi ne, whi ch pr ovi des bot h l ocal and l ong di st ance ser vi ce. The number f or t hi s equi pment shal l be pr ovi ded t o t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve dur i ng t he pr econst r uct i on conf er ence, and t he t el ephone shal l be moni t or ed and answer ed by cont r act or per sonnel dur i ng wor ki ng hour s. Thi s r equi r ement may be wai ved by t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve i f sui t abl e f aci l i t i es ar e avai l abl e on t he dr edge.

3. 19 QUALI TY CONTROL

The Cont r act or shal l est abl i sh and mai nt ai n qual i t y cont r ol f or t he dr edgi ng and al l ot her oper at i ons i n connect i on t her ewi t h t o assur e compl i ance wi t h cont r act r equi r ement s. The Cont r act or shal l i nspect f or compl i ance wi t h cont r act r equi r ement s and r ecor d t he i nspect i on of al l oper at i ons i ncl udi ng but not l i mi t ed t o t he f ol l owi ng:

Dr edgi ng i s conf i ned wi t hi n t he l i mi t s shown on t he dr awi ngs.

Pl acement of mat er i al i s i n accor dance wi t h t he Dr edge Mat er i al Pl acement Pl an.

A copy of t hese qual i t y cont r ol r ecor ds, as wel l as t he r ecor ds of cor r ect i ve act i on t aken shal l be f ur ni shed t he Gover nment as di r ect ed by t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve.

3. 20 EXI STI NG STRUCTURES

The Cont r act or shal l exer ci se appr opr i at e car e when dr edgi ng adj acent t o or i n t he v i c i ni t y of t he secur i t y bar r i er , f ender s, whar ves, Secur i t y Boat Basi n Dock and ot her exi st i ng st r uct ur es. Any damage t o exi st i ng st r uct ur es caused by i mpact f r om t he dr edge or ot her pl ant or by dr edgi ng i n excess of speci f i ed l i mi t s shal l be r epai r ed t o t he sat i sf act i on of t he Cont r act i ng Of f i cer , or hi s/ her desi gnat ed r epr esent at i ve, at no cost t o t he Gover nment or t o t he owner s of t he st r uct ur e. See par agr aph PRECONSTRUCTI ON VI DEO SURVEY of Sect i on 01 10 00. 10 38 f or v i deo sur vey r equi r ement s. 11x17 as- bui l t dr awi ngs of t he secur i t y bar r i er ar e avai l abl e f or r evi ewi ng at t he Wi l mi ngt on Di st r i c t Of f i ce by t he Cont r act or .

3. 21 SUBMERGED PI PELI NE

( a) I n t he event t he Cont r act or el ect s t o submer ge hi s/ her pi pel i ne, t he l ocat i on of t he submer ged pi pel i ne shal l be mar ked wi t h s i gns, buoys, f l ags, and l i ght s conf or mi ng t o U. S. Coast Guar d r egul at i ons and t o t he compl et e sat i sf act i on of t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve. The Cont r act or shal l submer ge t he pi pel i ne beneat h any mar ked navi gat i on channel . Pr i or t o commencement of dr edgi ng and pl acement oper at i ons, t he Cont r act or shal l submi t a submer ged pi pel i ne pl an t o t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve f or

SECTI ON 35 20 23 Page 14 r evi ew and appr oval . The pl an shal l i ncl ude as a mi ni mum t he pr oposed pi pel i ne r out e and a pl an f or r emoval of t he pi pel i ne pr i or t o t he dr edge l eavi ng t he s i t e.

( b) At l ocat i ons wher e submer ged pi pel i ne cr osses a navi gat i on channel , t he Cont r act or shal l pl ace t he pi pel i ne at such a dept h t hat t he t op of t he pi pe i s bel ow t he aut hor i zed dept h of t he channel . The Cont r act or shal l i nst al l and mai nt ai n r ed over r ed l i ght s on bot h s i des of t he navi gat i on channel mar ki ng t he l ocat i on of t he submer ged pi pel i ne. At l ocat i ons suppor t ed by t r est l e, t he Cont r act or shal l al so i nst al l and mai nt ai n f l ashi ng yel l ow l i ght s at 10- met er i nt er val s f r om t he r ed l i ght mar ki ng t he l ocat i on of t he pi pel i ne t o t he shor el i ne. The Cont r act or shal l er ect and mai nt ai n a war ni ng s i gn at l ocat i ons wher e submer ged pi pel i ne cr osses a r ecogni zed navi gat i on channel . The si gns shal l be 4' by 8' i n s i ze and r ead:

( 1) Red over r ed l i ght s shal l be v i s i bl e al l ar ound t he hor i zon, v i s i bl e f or at l east 2 mi l es on a c l ear dar k ni ght and one met er apar t i n a ver t i cal l i ne wi t h t he l ower l i ght at t he same hei ght , not l ess t han 1 and not mor e t han 3. 5 met er s, above t he wat er at t he yel l ow l i ght s.

( 2) Fl ashi ng yel l ow l i ght s shal l f l ash at a r at e of 50 t o 70 t i mes per mi nut e, shal l be v i s i bl e al l ar ound t he hor i zon, shal l be v i s i bl e f or at l east 2 mi l es on a c l ear dar k ni ght , shal l be not l ess t han 1 and not mor e t han 3. 5 met er s above t he wat er , shal l be equal l y spaced.

( c) When t he submer ged pi pel i ne r uns out s i de t he navi gat i on channel , t he Cont r act or shal l mar k t he pi pel i ne r out e wi t h buoys wi t h yel l ow l i ght s at i nt er val s not t o exceed 20 met er s unl ess ot her wi se appr oved by t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve and at abr upt changes i n di r ect i on. The Cont r act or shal l al so er ect s i gns at one ( 1) mi l e i nt er val s al ong r out es of submer ged pi pel i nes. The si gns shal l be 4' by 8' and read:

" CAUTI ON: SUBMERGED PI PELI NE"

( d) Al l l i ght s shal l be v i s i bl e f or at l east 2 mi l es on a c l ear dar k ni ght , v i s i bl e al l ar ound t he hor i zon, not l ess t han one ( 1) and not mor e t han 3. 5 met er s above t he wat er and equal l y spaced.

3. 22 PI PELI NE LEAKAGE

A t i ght dr edge di schar ge pi pel i ne shal l be mai nt ai ned al ong al l sect i ons of t he pi pel i ne t o pr event spi l l i ng of dr edged ef f l uent . When si gni f i cant l eaks occur i n t he pi pel i ne, t he Cont r act or shal l i mmedi at el y cease pumpi ng oper at i ons unt i l t he pi pel i ne i s r epai r ed. Shoul d any mat er i al l eak i nt o wat er s or wet l ands, t he Cont r act or shal l not i f y t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve, and i f so di r ect ed by t he Cont r act i ng Of f i cer pr ompt l y r est or e t he wat er s or wet l ands t o t he sat i sf act i on of t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve and r esponsi bl e Feder al and St at e r esour ce agenci es.

- - End of Sect i on - -

SECTI ON 35 20 23 Page 15

Cubic Yards 2-Foot Allowable Total Cubic Channel Reach Required Depth (FT) to Required Depth Overdepth Yards

Wilmington Harbor Mid-River Channels Base Bid Items

Upper Big Island Channel 42 144,000 106,000 250,000 Lower Lilliput Channel 42 196,000 244,000 440,000 Upper Midnight Channel 42 232,000 248,000 480,000 Lower Midnight Channel 42 44,000 86,000 130,000

Totals Mid-River Base Bid Items 616,000 684,000 1,300,000

MOTSU Channels & Basins Base Bid Items

Approach Channel South Entrance -38 25,000 65,000 90,000 South Wharf Turning Basin & Approach Channel South to Center Wharf -38 360,000 180,000 540,000 Center Wharf Turning Basin -38 873,000 297,000 1,170,000

Totals MOTSU Base Bid Items 1,258,000 542,000 1,800,000

Optional Bid Items Approach Channel Center to North Wharf & North Wharf Turning Basin -34 308,000 92,000 400,000

Totals MOTSU Optional Bid Items 308,000 92,000 400,000

Totals MOTSU 1,566,000 634,000 2,200,000

Totals Mid-River & MOTSU 2,182,000 1,318,000…