A21_-_W912PM18B0004_Amd_0002.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 specif ications in accordance w ith the attached Summary of Changes.

B) Extend the bid opening date from Friday, October 26, 2018 at 2PM EST to Tuesday, October 30, 2018 at 2PM EST.

C) All other terms and conditions of this solicitation remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

1 2

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

16C. DATE SIGNED

BY 22-Oct-2018

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 W912PM18B0004

X 9B. DATED (SEE ITEM 11)

28-Aug-2018

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

22-Oct-2018

CODE

U S ARMY CORPS OF ENGINEERS, WILMINGTON

WILMINGTON DISTRICT

ATTN: CONTRACTING DIVISION

69 DARLINGTON AVE

WILMINGTON NC 28403-1343

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

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912PM18B0004

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00 10 00 - SOLICITATION

The required response date/time has changed from 26-Oct-2018 02:00 PM to 30-Oct-2018 02:00 PM.

(End of Summary of Changes)

W912PM18B0004

Amendment 0002

Technical Summary of Changes

SPECIFICATIONS

35 20 23 – DREDGING

Delete existing Pages 1 thru 19 in their entirety and replace with revised enclosed like-numbered Pages.

NOTE:

Text that is added or revised by this amendment is identified with Amendment 0002(beginning and ending of revision/addition). Track changes shown as Strikethroughs (Delete/RED) and (ADD/GREEN).

The text changes may have necessitated reformatting of subsequent text or pages. If this is the case, those pages have also been issued as amended pages but are not underlined or bold text.

DRAWINGS: No changes.

-- End of Summary of Changes-

Encls As Stated

Mai nt enance Dr edgi ng, AI WW W912PM18B004 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

08/18

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 CHARACTER OF MATERI ALS

1. 7 ENVI RONMENTAL WI NDOWS

1. 8 NOTI CES

1. 9 NAVI GATI ON AI DS

1. 10 MI SPLACED MATERI AL

1. 11 OVERDEPTH AND SI DE SLOPES

1. 11 Over dept h

1. 12 Channel Si de Sl opes

1. 13 Excessi ve Dr edgi ng

1. 14 TI DE DATA

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

1. 14. 2 VDat um

1. 14. 3 RTK GPS Di sput es

1. 15 ENVI RONMENTAL WI NDOWS

1. 16 MEASUREMENT AND PAYMENT

1. 16. 1 Dr edgi ng Vol ume of Mat er i al Removed Fr om Channel s and Basi ns

1. 16. 2 Cont r act Dr awi ngs

1. 16. 3 Mont hl y Par t i al Payment s - Channel s and Basi ns

1. 16. 4 Met hod of Sur vey - Channel s and Basi ns

1. 16. 5 Si ngl ebeam Sur veyi ng Met hod - Channel s and Basi ns

1. 16. 6 Sur vey Li nes - Channel s and Basi ns

1. 16. 7 Beach Pr of i l e Sur veys

1. 16. 7. 1 Beach Ti l l i ng

1. 17 NAVAL FI RI NG EXERCI SES

PART 2 PRODUCTS

PART 3 EXECUTI ON

3. 1 PLANT

3. 2 DREDGE POSI TI ONI NG SYSTEM

3. 3 DI SPOSAL OF DREDGED MATERI AL

3. 3. 1 Upl and Di sposal Ar ea

3. 3. 2 Beach Di sposal Ar eas

3. 3. 3 Dr edged Mat er i al Di sposal Pl an

3. 3. 4 Tempor ar y Saf et y Fenci ng

3. 3. 5 War ni ng Si gns

3. 3. 6 Const r uct i on and Gr ade St ake Recover y Pl an

SECTI ON 35 20 23 Page 1

( AMENDMENT 0002)

Maintenance Dredging, AIWW W912PM18B004 North Carolina

3.3.7 Beach Tilling

3.4 COMMUNICATIONS

3.5 REPORTING REQUIREMENT

3.6 COMPLIANCE WITH APPLICABLE NAVIGATION RULES AND REGULATIONS, MARINE

EQUIPMENT

3.6.1 Vessels

3.6.2 Obstructions

3.6.3 Contractor Responsibility

3.7 FLOATING PLANT INSPECTION AND CERTIFICATION

3.8 QUALITY CONTROL

3.9 DREDGING IN PROGRESS

3.10 SUBMERGED PIPELINE

3.11 EXISTING STRUCTURES

3.12 PIPELINE ROUTES

3.12.1 General

3.12.2 Dune Protection

3.12.3 Pedestrian Access

3.13 PIPELINE LEAKAGE

3.14 BOOSTER PUMPS

3.15 QUANTITIES SUMMARY

3.16 WATER POLLUTION CONTROL

3.16.1 Contamination of Water

3.16.2 Disposal of Materials

ATTACHMENT:

Attachment 1 - Quantities Summary

-- End of Section Table of Contents --

SECTION 35 20 23 Page 2

(AMENDMENT 0002)

SECTI ON 35 20 23

DREDGING

08/18

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 cont r act dr awi ngs f or Mai nt enance Dr edgi ng - At l ant i c I nt r acoast al Wat er way, Beauf or t t o Shal l ot t e, Nor t h Car ol i na.

( b) 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 e of t he cont r act sur vey 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 vey. 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 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 wi t hi n t he t ext by t he 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 Manual

1. 3 SUBMI TTALS

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

submi t t al s not havi ng a " G, A" 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, A" 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

Dr edged Mat er i al Di sposal Pl an; G, A

Const r uct i on and Gr ade St ake Recover y Pl an; G, A

1. 4 WORK COVERED BY CONTRACT PRI CE

The cont r act pr i ce per cubi c yar d f or dr edgi ng of t he BI DDI NG SCHEDULE i ncl udes al l cost s associ at ed wi t h pl ant , l abor , equi pment , suppl i es, and mat er i al s r equi r ed f or dr edgi ng and di sposal of al l dr edged mat er i al .

1. 5 ORDER OF WORK

Unl ess ot her wi se di r ect ed by t he Cont r act i ng Of f i cer or hi s/ her

SECTI ON 35 20 23 Page 3 desi gnat ed r epr esent at i ve, t he or der of wor k shal l be at t he di scr et i on of t he Cont r act or . Dr edgi ng i n Sect i on 2 Tangent F i s al l owed by t he U. S.

Mar i ne Cor ps Range Cont r ol f r om 16 November 2018 unt i l 31 Mar ch 2019. The Cont r act or shal l t ake t hi s wi ndow i nt o consi der at i on when est abl i shi ng an or der of wor k.

AMENDMENT 0001

1. 6 CHARACTER OF MATERI ALS

The mat er i al t o be r emoved f r om t he mai nt enance dr edgi ng ar eas i s pr edomi nant l y composed of shoal ed mat er i al , whi ch has accumul at ed s i nce dr edgi ng was conduct ed. The shoal mat er i al s ar e bel i eved t o consi st pr i mar i l y of sand, s i l t and c l ay but may al so i ncl ude wood, met al and ot her sunken debr i s t hat may have become l odged i n t he channel by r ecent st or ms. .

Si t e condi t i ons ar e not f ul l y char act er i zed, but t he channel s have been subj ect t o r out i ne per i odi c dr edgi ng. Geot echni cal bor i ngs have been dr i l l ed t hr oughout t he AI WW channel s f r om 1993 t o 2010. Appendi x A cont ai ns a t abul ar summar y of bor i ngs dr i l l ed, l ocat i ons, mat er i al s encount er ed and t he dr i l l i ng l ogs f or Cont r act or r evi ew. Appendi x B cont ai ns t he associ at ed soi l s l ab t est dat a. Most of t he mat er i al t o be dr edged consi st s of unconsol i dat ed shoal ed sedi ment . The bor i ngs pr ovi ded her ei n ar e consi der ed r epr esent at i ve of t he l ocal subsur f ace condi t i ons at t he t i me i n whi ch t hey wer e or i gi nal l y dr i l l ed. Subsur f ace condi t i ons wi t hi n t he r egul ar l y mai nt ai ned dr edgi ng pr i sm may change over t i me due t o per i odi c mat er i al r emoval and subsequent nat ur al sedi ment ar y shoal i ng.

Mat er i al sampl ed bel ow t he dr edgi ng pr i sm i s consi der ed r epr esent at i ve of condi t i ons bel ow pr oj ect dept h. I t i s t he r esponsi bi l i t y of t he Cont r act or / bi dder t o t hor oughl y f ami l i ar i ze hi msel f wi t h t he exi st i ng dat a, conduct hi s own i nvest i gat i ons i f necessar y, and deci de f or hi msel f t he s i t e condi t i ons and char act er of mat er i al s pr i or t o commenci ng t he wor k.

The Gover nment shal l not be l i abl e f or t he Cont r act or ' s f ai l ur e t o pr oper l y pr epar e t o deal wi t h t he exi st i ng geol ogi c condi t i ons at each dr edgi ng ar ea.

AMENDMENT 0001

1. 7 ENVI RONMENTAL WI NDOWS

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

1. 8 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) 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 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 f t een ( 15) days advance wr i t t en not i ce bef or e pl aci ng pi pe and/ or sand on beaches.

c . 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) days pr i or t o begi nni ng dr edgi ng i n an accept ance section.

d. 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) wor ki ng days pr i or t o compl et i on of an accept ance section.

SECTI ON 35 20 23 Page 4

1. 9 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 , 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.

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. 10 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 t he pi pel i nes, 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 . 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 Cont r act or i s caut i oned t hat r est or at i on measur es i ncl udi ng t he pl ant i ng and successf ul sur vi val of veget at i on may be r equi r ed. 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 any mat er i al pl aced out s i de of t he t ol er ances of each t ypi cal beach sect i on unl ess ot her wi se aut hor i zed 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. The Cont r act or shal l r edi st r i but e any mi spl aced mat er i al i n t he beach di sposal pl acement ar eas i n or der t o conf or m wi t h t he t ypi cal beach sect i on and t ol er ances gi ven i n t he cont r act . Thi s shal l be accompl i shed at t he Cont r act or ' s expense.

( 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

SECTI ON 35 20 23 Page 5 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. 11 OVERDEPTH AND SI DE SLOPES

1. 11 Over dept h

Thi s cont r act al l ows channel 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 Channel Si de Sl opes

Al l mat er i al r emoved f r om wi t hi n t he l i mi t s shown on t he t ypi cal dr edgi ng sect i ons of t he cont r act dr awi ngs wi l l be pai d f or at t he cont r act uni t pr i ce. Dr edgi ng bel ow t he maxi mum pay dept h and beyond t he maxi mum pay s l ope wi l l not be pai d f or .

1. 13 Excessi ve Dr edgi ng

Mat er i al t aken f r om beyond t he l i mi t s as gi ven i n subpar agr aph, Channel Si de Sl opes, 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 appl i cabl e pr ovi s i ons of SECTI ON 01 10 00. 10 38:

SUPPLEMENTARY SPECI AL CONTRACT REQUI REMENTS, par agr aph, FI NAL EXAMI NATI ON

AND ACCEPTANCE.

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) f or t he AI WW Mai nt enance Dr edgi ng Cont r act . 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 t he 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 VDat um

The VDat um I nl and Wat er ways and Sounds model wi l l be used t o conver t el evat i ons f r om t he Ref er enced El l i psoi d t o Mean Lower Low Wat er ( 1983- 2001) f or For t Macon USCG Basi n, Br own I nl et Cr ossi ng, Mason Cr eek Cr ossi ng, Wr i ght svi l l e Beach USCG Basi n and Shi nn Cr eek Cr ossi ng. The VDat um Geor gi a/ Sout h Car ol i na/ Nor t h Car ol i na- Sapel o I s l and GA t o New Ri ver NC model wi l l be used t o conver t el evat i ons f r om t he Ref er enced El l i psoi d t o Mean Lower Low Wat er ( 1983- 2001) f or Lockwoods Fol l y I nl et Cr ossi ng and Shal l ot t e Ri ver Cr ossi ng. A t i dal dat um di agr am showi ng t he r el at i onshi p

SECTI ON 35 20 23 Page 6 bet ween NAVD 88 and Mean Lower Low Wat er wi l l be pr ovi ded upon r equest .

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 .

1. 15 ENVI RONMENTAL WI NDOWS

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

1. 16 MEASUREMENT AND PAYMENT

1. 16. 1 Dr edgi ng Vol ume of Mat er i al Removed Fr om Channel s and Basi ns

The t ot al vol ume of al l mat er i al r emoved f r om channel s and basi ns 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 t he soundi ngs of t he l ast sur vey bef or e dr edgi ng 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 ment usi ng t he Bent l ey I nRoads t r i angl e vol ume met hod. 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 . The quant i t i es measur ed as pr ovi ded above wi l l be pai d f or at t he cont r act uni t pr i ce f or " Dr edgi ng" as l i s t ed i n t he bi ddi ng schedul e.

1. 16. 2 Cont r act Dr awi ngs

The dr awi ngs r ef er r ed t o i n SECTI 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 of t he channel s exi st i ng on t he dat es of sur vey. ASCI I dat a f i l es i n XYZ f or mat of t he channel condi t i on sur veys ar e avai l abl e on t he http://fbo.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 of each channel accept ance sect i on 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 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 ef 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. 16. 3 Mont hl y Par t i al Payment s - Channel s and Basi ns

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 Dr edgi ng Vol ume of Mat er i al Removed Fr om Channel . Est i mat ed quant i t i es cal cul at ed shal l be based upon sat i s f act or y 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. 16. 4 Met hod of Sur vey - Channel s and Basi ns

Hydr ogr aphi c sur veys wi l l be accompl i shed by t he Gover nment t o det er mi ne

SECTI ON 35 20 23 Page 7 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. 16. 5 Si ngl ebeam Sur veyi ng Met hod - Channel s and Basi ns

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.

Bot t om el evat i ons wi l l be based on 200 kHz dept h soundi ngs. Payment f or mat er i al r emoved wi l l be based on 200 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. 16. 6 Sur vey Li nes - Channel s and Basi ns

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. 16. 7 Beach Pr of i l e Sur veys

Beach pr of i l e sur veys f or pr e- pl acement and post - pl acement shal l be i ncl uded i n t he appr opr i at e cont r act uni t pr i ce bi d i t em f or " DREDGI NG" , as l i s t ed i n t he BI DDI NG SCHEDULE. Payment shal l const i t ut e f ul l compensat i on f or al l l abor , equi pment , t ool s, and i nci dent al s necessar y t o compl et e t he wor k speci f i ed her ei n. Requi r ement s f or t he onshor e and of f shor e beach pr of i l e sur veys ar e def i ned i n Sect i on 01 10 00. 10 38, par agr aph SURVEY

REQUIREMENTS.

1. 16. 7. 1 Beach Ti l l i ng

Opt i onal bi d i t ems have been i ncl uded f or beach t i l l i ng at each beach di sposal ar ea. I f det er mi ned necessar y 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 t he opt i onal bi d i t em wi l l be exer ci sed near t he end of t he di sposal oper at i ons at each r espect i ve beach di sposal ar ea. The uni t measur ement f or beach t i l l i ng wi l l be t he acr e. The quant i t i es t o be pai d f or shal l compr i se t he act ual ar eas accept abl y t i l l ed 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, measur ed t o t he near est one- hundr edt h of an acr e based on hor i zont al measur ement s. The quant i t i es measur ed as pr ovi ded above wi l l be pai d f or at t he appl i cabl e cont r act uni t pr i ce per acr e f or opt i onal bi d i t em " Beach Ti l l i ng" whi ch pr i ce and payment shal l const i t ut e f ul l compensat i on f or t i l l i ng, l evel i ng and f ur ni shi ng al l l abor , t ool s, equi pment , ser vi ces, and i nci dent al s necessar y t o compl et e t he wor k i n accor dance wi t h t hi s sect i on of t he speci f i cat i ons.

1. 17 NAVAL FI RI NG EXERCI SES

Dur i ng t he dr edgi ng per i od f or Br own I nl et Cr ossi ng, Cont r act or per sonnel shal l be r equi r ed t o vacat e t he r ange ar ea i f a U. S. Naval Gunf i r e Exer ci se

SECTI ON 35 20 23 Page 8 i s t o be conduct ed. Upon not i f i cat i on f r om t he U. S. Mar i ne Cor ps Range Cont r ol , 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 pr ovi de t he Cont r act or 24- hour s not i ce t o move al l per sonnel c l ear of t he r ange l i mi t s and wi l l not i f y t he Cont r act or when he can r et ur n t o t he j ob s i t e. Any equi pment l ef t at t he wor k s i t e shal l be at t he Cont r act or ' s r i sk. Any equi pment r emoval shal l be at t he di scr et i on and expense of t he Contractor.

PART 2 PRODUCTS

Not used

PART 3 EXECUTI ON

3. 1 PLANT

Dr edgi ng by hydr aul i c cut t er suct i on dr edge i s r equi r ed f or t hi s cont r act .

3. 2 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 and t he cut t er head 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. 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 commencement of wor k. I t i s 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 r 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 commencement of wor k.

3. 3 DI SPOSAL OF DREDGED MATERI AL

The Gover nment f ur ni shed di sposal ar eas ar e Br andt I s l and Di sposal Ar ea, Onsl ow Beach Nor t h End, Di sposal Ar ea 241, Di sposal Ar ea 251, Oak I s l and Beach West End, and Di sposal Ar ea 300 as i ndi cat ed on t he dr awi ngs. The Cont r act or shal l obt ai n appr oval of t he pi pel i ne r out es and i ni t i al di schar ge poi nt s f r om t he Cont r 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 commencement of dr edgi ng and di sposal oper at i ons.

3. 3. 1 Upl and Di sposal Ar ea

Br andt I s l and Di sposal Ar ea, Di sposal Ar ea 241, Di sposal Ar ea 251, and Di sposal Ar ea 300 ar e t he Gover nment f ur ni shed conf i ned upl and di sposal ar eas f or dr edged mat er i al . The Cont r act or shal l compl et e const r uct i on of t he r equi r ed spi l l way pi pe r epl acement and pi pe suppor t f r ame i mpr ovement s at Di sposal Ar ea 251 pr i or t o di sposal oper at i ons. The Cont r act or shal l f ur ni sh and i nst al l s t opl ogs i n t he spi l l way r i ser s at t he Br andt I s l and Di sposal Ar ea, Di sposal Ar ea 241, Di sposal Ar ea 251 and Di sposal Ar ea 300.

The Cont r act or shal l obt ai n appr oval of t he pi pel i ne r out e and i ni t i al di schar ge poi nt f r om t he Cont r 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 commencement of di sposal oper at i ons. The Cont r act or shal l pr ovi de a t ot al of t wo peopl e, f ul l y awake and al er t , on t he di sposal

SECTI ON 35 20 23 Page 9 ar eas at al l t i mes pumpi ng oper at i ons ar e i n pr ogr ess and, i f i n t he opi ni on of t he Cont r act i ng Of f i cer i t i s necessar y, dur i ng non- pumpi ng hour s. One dozer and oper at or shal l be st at i oned at t he dr edgi ng di schar ge l i ne t o ensur e t hat t he ef f l uent i s cont r ol l ed i n such a manner t hat hi gh vel oci t y di schar ge wi l l not i mpi nge on or cause er osi on of t he di kes. The Cont r act or shal l moni t or bot h t he hei ght of t he r et ai ned wat er and t he spi l l ways dur i ng di sposal oper at i ons and adj ust t he hei ght of t he spi l l way st opl ogs t o al l ow maxi mum set t l i ng of suspended sol i ds and t o assur e pr oper dr ai nage of t he r et ai ned wat er and t o ensur e suf f i c i ent f r eeboar d ( 2' mi ni mum i s r equi r ed) i s mai nt ai ned wi t hi n t he di ked di sposal ar eas t o assur e t he i nt egr i t y of t he di ke st r uct ur es and t he cont ai nment of t he dr edged mat er i al . The Cont r act or shal l al so i nspect t he spi l l ways, di ke, and ot her cr i t i cal ar eas dur i ng dr edgi ng oper at i ons f or any evi dence of pot ent i al i nst abi l i t y such as cr acki ng, seepage, pi pi ng, set t l ement or s l ope movement . At l east f our i nspect i ons per 24 hour day shal l be conduct ed 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. I f evi dence of i nst abi l i t y i s f ound, 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 i mmedi at el y and awai t f ur t her i nst r uct i on. The t wo peopl e at t he di sposal ar eas shal l be i n const ant cont act wi t h t he l ever r oom of t he dr edge and shal l moni t or t he di schar ge and t he pi pel i ne f or l eaks t o be cer t ai n mat er i al i s not deposi t ed out s i de t he l i mi t s of t he di sposal ar eas. The br eaki ng of di kes t o per mi t f r ee dr ai nage wi l l not be per mi t t ed. The Cont r act or i s r esponsi bl e f or mai nt enance of t he gover nment f ur ni shed di sposal ar eas i ncl udi ng t he di kes and spi l l way syst ems t hr oughout t he l i f e of t he cont r act .

3. 3. 2 Beach Di sposal Ar eas

( a) Dr edged mat er i al shal l be deposi t ed wi t hi n t he l i mi t s of t he beach di sposal ar eas as shown on t he dr awi ngs. Pl acement of t he mat er i al wi t hi n t he Beach Di sposal Ar eas shal l be i n t he f or m of a hor i zont al const r uct i on ber m, const r uct ed t o t he el evat i ons and wi dt hs i ndi cat ed by t he t ypi cal ber m sect i ons shown on t he dr awi ngs, unl ess ot her wi se 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, and cont i nue down t he beach as f ar as t he quant i t y of dr edged mat er i al wi l l al l ow. The dr edged mat er i al shal l be pl aced t o pr ovi de a t r ansi t i on as shown on t he dr awi ngs at each end of t he Beach Di sposal Ar eas. The seawar d s l ope of t he const r uct i on ber m shal l be al l owed t o assume i t s nat ur al angl e f r om t he seawar d cr est of t he ber m t o i t s poi nt of i nt er sect i on wi t h t he exi st i ng pr of i l e.

( b) The sea t ur t l e mor at or i um i s f r om May 1 t o November 15. The Cont r act or shal l not deposi t dr edged mat er i al i n t he beach di sposal ar eas ( see dr awi ngs) pr i or t o November 16, 2018. No equi pment or pi pe i s al l owed on t he beach di sposal ar eas pr i or t o November 16, 2018.

( c) Typi cal beach di sposal sect i ons ar e shown on t he cont r act dr awi ngs. A ver t i cal t ol er ance of f i ve- t ent hs ( 0. 5) of one f eet above and f i ve- t ent hs ( 0. 5) bel ow t he r equi r ed ber m gr ades wi l l be per mi t t ed on t he f i ni shed sur f ace. Any mat er i al pl aced above t he al l owabl e ver t i cal l i mi t s of t he const r uct i on ber m shal l be r emoved by t he Cont r act or at hi s/ her expense and pl aced wi t hi n t he l i mi t s of t he di sposal ar ea as shown i n t he t ypi cal beach di sposal sect i on.

Cont r act or i s caut i oned t hat t i des, cur r ent s, st or ms, et c. may have al t er ed t he beaches s i nce t he dat e of phot ogr aphy shown on t he dr awi ngs. I t shal l be t he r esponsi bi l i t y of t he Cont r act or t o per f or m any r equi r ed beach sur veys t o ver i f y t he hei ght and wi dt h of t he beach di sposal ar ea, such t hat t he dr edged mat er i al may be pl aced i n

SECTI ON 35 20 23 Page 10 accor dance wi t h t hese pl ans and speci f i cat i ons.

( d) The Cont r act or shal l pr ovi de a t ot al of t wo peopl e, f ul l y awake and al er t , on t he beach di sposal ar eas at al l t i mes pumpi ng oper at i ons ar e i n pr ogr ess and i f i n t he opi ni on of t he Cont r act i ng Of f i cer i t i s necessar y, dur i ng non- pumpi ng hour s. One dozer and oper at or shal l be st at i oned at t he dr edgi ng di schar ge l i ne t o ensur e t hat t he ef f l uent i s cont r ol l ed i n such a manner t hat hi gh vel oci t y di schar ge wi l l not i mpi nge on or cause er osi on of t he exi st i ng dunes. I t shal l be t he r esponsi bi l i t y of t hese i ndi v i dual s t o moni t or t he pi pel i ne f or l eaks as wel l as moni t or t he di schar ge t o be cer t ai n no mat er i al i s al l owed t o be deposi t ed out s i de t he l i mi t s of t he di sposal ar ea.

( e) The Cont r act or shal l not wor k c l oser t o st r uct ur es t han t he di st ance shown on t he dr awi ngs. St r uct ur es damaged by t he Cont r act or ' s oper at i ons 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 damaged pr oper t y.

( f ) The use of a hydr aul i c cut t er suct i on dr edge t o di spose of dr edged mat er i al on t he beach f r ont i s r equi r ed. I t i s not t he i nt ent of t hi s cont r act t o pl ace dr edged mat er i al al ong t he ent i r e l engt h of each beach di sposal ar ea. However , i t i s t he i nt ent of t hi s cont r act t o l eave each di sposal ar ea as nat ur al l ooki ng as possi bl e. Any exi st i ng dunes, whi ch shal l be al t er ed by equi pment , shal l be r est or ed. Any back di k i ng t o pr event er osi on of exi st i ng dunes i s t he r esponsi bi l i t y of t he Cont r act or . The ar eas shal l be c l eaned and mechani cal l y l evel ed as soon as possi bl e af t er compl et i on of mat er i al pl acement .

( g) Obj ect i onabl e Mat t er

Obj ect i onabl e mat t er such as st umps, r oot s, l ogs, or ot her or gani c or i nor gani c debr i s havi ng a di amet er of 2 i nches or mor e and/ or a l engt h of 1 f oot or mor e, or accumul at i ons of smal l veget at i ve gr owt h or debr i s shal l be col l ect ed and pl aced i n a di sposal ar ea f ur ni shed by t he Cont r act or and 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 as t he wor k pr ogr esses. Obj ect i onabl e mat t er , such as l ar ge c l ay bal l s, wi l l r equi r e t he Cont r act or t o 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 t o det er mi ne t he appr opr i at e met hods f or r esol ut i on of t he i ssue. Thi s may r equi r e r emoval of obj ect i onabl e mat t er f r om t he beach f i l l sect i on as wel l as addi t i onal coor di nat i on wi t h r esour ce agenci es. See subpar agr aph Beach Compat i bl e Sedi ment s of Sect i on 01 57 19 ENVI RONMENTAL PROTECTI ON f or addi t i onal r equi r ement s f or beach f i l l .

( h) Di schar ge Poi nt s

When t he f i l l mat er i al i s pl aced by di schar gi ng t he mat er i al di r ect l y i nt o t he f i l l sect i on, t he dr edge di schar ge poi nt s shal l be mani pul at ed and cont r ol l ed by t he Cont r act or i n such a manner t o mi ni mi ze t he l oss of mat er i al i n t o t he sur f zone. At no t i me shal l t he dr edged mat er i al be di schar ged di r ect l y i nt o t he ocean or any body of wat er .

( i ) Longi t udi nal Di kes

For beach f i l l mat er i al pl aced by di schar gi ng t he mat er i al di r ect l y i nt o t he f i l l sect i on, t he Cont r act or shal l pr ovi de t empor ar y l ongi t udi nal di kes and spr eader and pocket pi pe as necessar y t o pr event gul l y i ng and er osi on of t he beach and f i l l and t o r et ai n t he f i l l on

SECTI ON 35 20 23 Page 11 t he beach and wi t hi n t he l i mi t s of t he f i l l cr oss sect i on. Longi t udi nal di kes shal l be at l east 300 f eet l ong i n f r ont of t he dr edge di schar ge poi nt . The l engt h of di ke shal l be i ncr eased as necessar y t o cont ai n t he f i l l mat er i al and r educed wi t h appr oval 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. Gr oi ns, bul kheads, r evet ment s, pi er s, st or m dr ai n out f al l pi pes, and ot her st r uct ur es wi t hi n t he f i l l sect i on shal l be pr ot ect ed by t he Cont r act or t o pr event damage t her eof by t he Cont r act or ' s oper at i ons. Any damages assessed as a r esul t of any of t he above i t ems shal l be at t he Cont r act or ' s expense.

( j ) Any mat er i al , i ncl udi ng mat er i al l ost t hr ough l eaks i n t he di schar ge l i ne 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 not be pai d f or and t he Cont r act or may be r equi r ed t o r emove such mi spl aced mat er i al , af t er coor di nat i on wi t h appr opr i at e St at e and Feder al r esour ce agenci es, 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 t he af or ement i oned st at e and f eder al r esour ce agenci es and deposi t i t wher e di r ect ed at hi s expense.

( k) Wood, met al and ot her sunken debr i s encount er ed dur i ng dr edgi ng or deposi t ed on t he beach dur i ng di sposal of dr edged mat er i al shal l be r emoved 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 regulations.

( l ) The ar eas t o be dr edged i n Sect i on 2 Tangent F, t he pi pel i ne r out e and t he beach di sposal ar ea ar e wi t hi n hi ghl y act i ve gr ound and ai r t o gr ound f i r i ng r anges of t he U. S. Mar i ne Cor ps. Al t hough t he same por t i on of t he AI WW has been dr edged many t i mes i n t he past wi t hout i nci dent , coor di nat i on wi t h base per sonnel conf i r ms t he f act t hat unexpl oded or di nance may be encount er ed wi t hi n t he ar ea t o be dr edged as wel l as t he pi pel i ne r out e and beach di sposal ar ea.

( 1) Empl oyee i dent i f i cat i on: At l east 10 days bef or e mobi l i z i ng t o Sect i on 2 Tangent F, t he Cont r act or shal l f ur ni sh t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve names, dr i ver ' s l i cense and vehi cul ar t ag number s of each empl oyee t hat wi l l be wor ki ng on t hi s pr oj ect . The Cont r act or shal l r equi r e empl oyees t o di spl ay i dent i f i cat i on when r equest ed. I f , t her e ar e any changes i n empl oyees who ar e assi gned t o wor k at any t i me af t er t he i nf or mat i on i s submi t t ed and pr i or t o compl et i on of wor k i n Sect i on 2 Tangent s F, t he Cont r act or shal l pr ompt l y f ur ni sh updat ed i nf or mat i on t o t he Cont act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve.

( 2) I t wi l l be t he r esponsi bi l i t y of t he Cont r act or t o t ake t hose measur es whi ch he deems necessar y t o pr ot ect hi s/ her pl ant and per sonnel pr i or t o begi nni ng wor k.

( 3) The 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 ar r ange an i ni t i al coor di nat i on meet i ng bet ween t he Cont r act or and t he Mar i ne Cor ps whi ch wi l l be hel d bef or e t he Cont r act or begi ns wor k i n Sect i on 2 Tangent F. When wor k begi ns, t he Cont r act or shal l coor di nat e al l of hi s/ her act i v i t i es wi t h t he desi gnat ed Mar i ne Cor ps per sonnel on a day t o day basi s.

( 4) The U. S. Mar i ne EOD Team wi l l sweep t he pi pel i ne r out e t o t he di sposal ar ea and pr ovi de per sonnel t o st andby dur i ng t he ent i r e

SECTI ON 35 20 23 Page 12 operation.

3. 3. 3 Dr edged Mat er i al Di sposal Pl an

Pr i or t o commencement of dr edgi ng and di sposal 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 di sposal pl an f or dr edged mat er i al . The pl an shal l i ncl ude t he pr oposed pi pel i ne r out e and di schar ge poi nt at each di sposal ar ea.

3. 3. 4 Tempor ar y Saf et y Fenci ng

The Cont r act or shal l compl y wi t h t he r equi r ement s of Sect i on 01 35 26:

GOVERNMENTAL SAFETY REQUI REMENTS f or t empor ar y saf et y f enci ng.

3. 3. 5 War ni ng Si gns

The Cont r act or shal l compl y wi t h t he r equi r ement s of Sect i on 01 35 26 Gover nment al Saf et y Requi r ement s f or war ni ng s i gns as shown on At t achment 3 of sect i on 01 35 26.

3. 3. 6 Const r uct i on and Gr ade St ake Recover y Pl an

( a) I t i s t he i nt ent of t he Gover nment t hat t he wel f ar e of t he publ i c be pr ot ect ed dur i ng dr edgi ng and beach const r uct i on act i v i t i es. I t i s al so t he Gover nment ' s i nt ent t o pr ot ect t he wel f ar e of t he publ i c af t er beach const r uct i on act i v i t y i s compl et ed. Beach gr ade st akes l ef t i n pl ace, ei t her by bei ng br oken of f at or bel ow gr ade, bul l dozed over , or l ef t i n t he sur f cr eat es a l ong t er m publ i c hazar d t o beach goer s and swi mmer s. Ther ef or e, t he Cont r act or shal l pr epar e and 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 f or r evi ew and appr oval a " Const r uct i on and Gr ade St ake Recover y Pl an" . The " Const r uct i on and Gr ade St ake Recover y Pl an" shal l out l i ne st eps necessar y t o r ecover al l gr ade st akes i nst al l ed f or pur poses of const r uct i ng beach di sposal sect i ons. The Recover y Pl an shal l mai nt ai n a l og or map t o i nvent or y al l t he st akes used i n t he beach di sposal const r uct i on. The l og/ map shal l i ncl ude i nf or mat i on concer ni ng t he l ocat i on, i nst al l at i on, and r ecover y of al l s t akes. The Cont r act or shal l make t hi s l og/ map avai l abl e f or r evi ew 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 upon r equest . Upon compl et i on of t he beach di sposal , t he Cont r act or shal l f ur ni sh t he l og/ map 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.

( b) Gr ade st akes and any ot her st akes f or any pur pose shal l be made of such mat er i al t hat can and shal l be r emoved i nt act af t er f i l l i ng t o cr oss sect i ons accept ed by or 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. Al l s t akes shal l have suf f i c i ent l engt h above gr ade so t hey may not be acci dent al l y cover ed by f i l l .

The Cont r act or shal l consecut i vel y number each gr ade st ake, shal l c l ear l y mar k t hat number upon t he st ake, and shal l r ecor d t he l ocat i on of each number ed st ake i n a gr ade st ake l og/ map. The r emoval of each number ed st ake shal l be r ecor ded i n t he gr ade st ake l og at t he t i me of t he st ake r emoval . At 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, al l of t he gr ade st akes shal l be di spl ayed af t er t hei r r emoval t o demonst r at e t hose st akes t hat have been r emoved.

Al l gr ade st akes pl aced wi t hi n t he l i mi t s of t he beach f i l l wor k shal l be number ed and shal l be r ecor ded i n t he l og/ map. I t i s t he Cont r act or ' s r esponsi bi l i t y t o t r ack, l ocat e, and compl et el y r emove al l gr ade st akes i n t hei r ent i r et y 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.

SECTI ON 35 20 23 Page 13

3. 3. 7 Beach Ti l l i ng

Beach t i l l i ng shal l onl y be per f or med at t he speci f i c di r ect 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. I f t he Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve det er mi nes t hat beach t i l l i ng i s necessar y, t he Cont r act or shal l t i l l t he beach f i l l ar ea l ocat ed bet ween t he mean hi gh wat er l i ne and t he l andwar d t i e- i n of beach f i l l . The ar eas shal l be t i l l ed wi t h equi pment oper at ed so as t o penet r at e and l oosen beach sand. Beach t i l l i ng oper at i ons shal l not commence unt i l pr i or appr oval and di r ect i on f r om 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 s r ecei ved. Ti l l i ng oper at i ons shal l not commence unt i l appr opr i at e coor di nat i on has occur r ed t o avoi d i mpact s t o sea t ur t l e nest s. Beach t i l l i ng shal l be accompl i shed as f ol l ows:

a. Ver t i cal l y t o a dept h of 36 i nches.

b. Hor i zont al l y wi t hout l eavi ng unl oosened compact sand bet ween t he adj acent pat hs of t i l l i ng equi pment .

c . Level i ng. To r emove f ur r ows, t he Cont r act or shal l l evel any mat er i al s whi ch ar e t i l l ed by dr aggi ng t he ar eas dur i ng t he t i l l i ng wi t h f enci ng mat er i al , shor el i ne pi pe, or any ot her appr oved met hods.

d. Beach t i l l i ng shal l not commence unt i l di r ect ed by Cont r act i ng Of f i cer or hi s/ her desi gnat ed r epr esent at i ve.

3. 4 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 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 r adi o t el ephone 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.

Cont i nuous r adi o cont act shal l be mai nt ai ned bet ween t he dr edge cont r ol r oom and t he i nspect or s of t he di sposal ar eas as wel l as t he i nspect or s pat r ol l i ng t he pi pel i ne.

3. 5 REPORTI NG REQUI REMENT

The Cont r act or shal l pr epar e dai l y i n t he…