TECHSPECS_24B0002_amd0002_24Sep24.pdf

SPI LLWAY STI LLI NG BASI N SEDI MENT REMOVAL W912EF24B0002

amd 0002

PROJECT TABLE OF CONTENTS

DI VI SI ON 01 - GENERAL REQUI REMENTS

01 00 00. 00 28 GENERAL REQUI REMENTS

01 11 01. 00 28 SUPPLEMENTARY REQUI REMENTS

01 14 00. 10 28 PROJECT SI TE RESTRI CTI ONS

01 14 00. 90 28 I NTEGRATI NG ANTI TERRORI SM ( AT) AND OPERATI ONS SECURI TY

( OPSEC)

01 22 00. 00 28 MEASUREMENT AND PAYMENT

01 32 16. 00 28 SMALL PROJECT CONSTRUCTI ON PROGRESS SCHEDULES

01 33 00 SUBMI TTAL PROCEDURES

01 35 10. 00 28 DI VI NG ( GENERAL)

01 35 29. 10 28 GOVERNMENTAL SAFETY REQUI REMENTS

01 42 00 SOURCES FOR REFERENCE PUBLI CATI ONS

01 45 00. 00 28 QUALI TY CONTROL

01 45 01. 00 28 RESI DENT MANAGEMENT SYSTEM CONTRACTOR MODE ( RMS CM)

01 51 00. 00 28 TEMPORARY UTI LI TI ES

01 55 10. 00 28 CONTRACTOR WORK, ACCESS AND STORAGE AREAS

01 57 13. 10 28 WATER QUALI TY MONI TORI NG

01 57 20. 00 28 ENVI RONMENTAL PROTECTI ON

01 78 00. 00 28 CLOSEOUT SUBMI TTALS

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

35 01 50. 59 28 DREDGI NG AND DI VI NG WORK

35 20 23. 13 28 NATI ONAL DREDGI NG QUALI TY MANAGEMENT PROGRAM SCOW -

MONI TORI NG PROFI LE

- - End of Pr oj ect Tabl e of Cont ent s - -

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PROJECT TABLE OF CONTENTS Page 2

SECTI ON TABLE OF CONTENTS

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

SECTI ON 35 01 50. 59 28

DREDGI NG AND DI VI NG WORK

PART 1 GENERAL

1. 1 SCOPE

1. 2 WORK SEQUENCE

1. 3 REFERENCES

1. 4 DEFI NI TI ONS

1. 4. 1 Sedi ment s

1. 4. 2 Rocks

1. 4. 3 Soi l Mat er i al s

1. 4. 4 Woody Mat er i al s

1. 4. 5 Debr i s

1. 5 SUBMI TTALS

PART 2 PRODUCTS

2. 1 VI SUALI ZATI ON PRODUCTS AND I NSPECTI ON DELI VERABLES

2. 1. 1 Dr edge Accept ance Vi deo Foot age

2. 1. 1. 1 Legi bi l i t y

2. 1. 1. 2 Vi deo Fi l e For mat

2. 1. 1. 3 Cover age

2. 1. 1. 4 Or gani zat i on of Vi deo Foot age

2. 1. 1. 5 Vi deo Fi l e Names

2. 1. 1. 6 Vi deo Fi l e Submi ssi on

2. 1. 2 Det ai l ed Di ve I nspect i on Phot os

2. 1. 2. 1 Legi bi l i t y

2. 1. 2. 2 Di gi t al Phot o For mat s

2. 1. 2. 3 Di gi t al Phot ogr aph Fi l e Names

2. 1. 3 Det ai l ed Di ve I nspect i on Vi deos

2. 1. 3. 1 Legi bi l i t y

2. 1. 3. 2 Vi deo Fi l e For mat

2. 1. 3. 3 Cover age

2. 1. 3. 4 Or gani zat i on of Vi deo Foot age

2. 1. 3. 5 Vi deo Fi l e Names

2. 1. 3. 6 Vi deo Fi l e Submi ssi on

2. 1. 4 Compi l ed Di ve I nspect i on Fi ndi ngs Repor t

2. 1. 4. 1 Cont ent

2. 1. 4. 2 Or gani zat i on

2. 1. 4. 3 Del i ver abl es

2. 1. 4. 4 Obser vat i on Pl an Map Pl ot

PART 3 EXECUTI ON

3. 1 EXCAVATI ON AND TRANSPORTI NG EQUI PMENT

3. 1. 1 Dr edgi ng Equi pment

3. 1. 2 Wat er t i ght Bucket

3. 1. 3 Wor k Scow Oper at i ons

SECTI ON 35 01 50. 59 28

3. 2 DI VI NG WORK

3. 2. 1 Dr edgi ng

3. 2. 1. 1 Addi t i onal Requi r ement s f or Concr et e Joi nt s and Depr essi ons

3. 2. 2 Dr edge Accept ance I nspect i on

3. 2. 2. 1 Dr edge Accept ance I nspect i on Schedul e

3. 2. 3 Det ai l ed Di ve I nspect i on

3. 2. 3. 1 I nspect i on I t ems

3. 3 DREDGED MATERI AL OTHER THAN SEDI MENTS

3. 3. 1 Hazar dous Mat er i al s

3. 4 DI SPOSAL OF DREDGED SEDI MENTS

3. 5 FI SH MONI TORI NG

3. 6 ADDI TI ONAL RESTRI CTI ONS

3. 6. 1 Pr ot ect Exi st i ng Faci l i t i es

3. 6. 1. 1 Responsi bl e f or Damages

3. 6. 2 Under mi ni ng Pr event i on

3. 7 LOCATI ON CONTROL MARKERS

3. 7. 1 Swi f t Bar HMU Di sposal Si t e

3. 7. 2 Dr edge Locat i ons

3. 7. 3 Appr oval of Mar ker Locat i ons

ATTACHMENTS:

Di ve I nspect i on Obser vat i on Locat i on Repor t i ng Schema

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

SECTI ON 35 01 50. 59 28

DREDGI NG AND DI VI NG WORK

PART 1 GENERAL

1. 1 SCOPE

Thi s sect i on speci f i es t he r equi r ement s f or dr edgi ng and di sposal of sedi ment f r om t he ar eas i ndi cat ed i n t he cont r act dr awi ngs. I t f ur t her speci f i es t he r equi r ement s f or di ve wor k i ncl udi ng det ai l ed sedi ment r emoval , di ve i nspect i on r equi r ement s, and di ve i nspect i on r epor t del i ver abl e r equi r ement s.

Thi s scope of t hi s cont r act i ncl udes al l i nci dent al and r el at ed wor k.

Dr edgi ng and di sposal s i t es ar e as f ol l ows:

a. Dr edgi ng Locat i ons

( 1) Lower Gr ani t e Dam St i l l i ng Basi n: al l ar eas dr edged as i ndi cat ed.

( 2) Lower Monument al Dam St i l l i ng Basi n: al l ar eas dr edged as i ndi cat ed.

b. Di sposal Locat i ons

( 1) Swi f t Bar Di sposal Ar ea as i ndi cat ed i n t he cont r act dr awi ngs.

( 2) Joso Di sposal Ar ea as i ndi cat ed i n t he cont r act dr awi ngs.

1. 2 WORK SEQUENCE

The Lower Gr ani t e Dam St i l l i ng Basi n wor k must be schedul ed and compl et ed pr i or t o t he wor k at t he Lower Monument al Dam St i l l i ng Basi n.

1. 3 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.

ASTM I NTERNATI ONAL ( ASTM)

ASTM D 2487 ( 2011) Soi l s f or Engi neer i ng Pur poses ( Uni f i ed Soi l Cl assi f i cat i on Syst em)

1. 4 DEFI NI TI ONS

1. 4. 1 Sedi ment s

Sedi ment s ar e compr i sed of r ocks, soi l mat er i al s, woody mat er i al s, and debr i s t hat have been deposi t ed i n, on, or near t he st i l l i ng basi n concr et e apr on or concr et e sur f aces wi t hi n t he i ndi cat ed wor k l i mi t s.

1. 4. 2 Rocks

Rocks ar e compr i sed of al l boul der s, cobbl es, and st one mat er i al s t hat have been deposi t ed i n, on, or near t he st i l l i ng basi n concr et e apr on or concr et e sur f aces wi t hi n t he i ndi cat ed wor k l i mi t s and ar e l ar ger t han 3 i nches i n any di mensi on.

1. 4. 3 Soi l Mat er i al s

Soi l mat er i al s compr i se any, and al l mat er i al s c l assi f i ed as ei t her coar se- gr ai ned soi l s, f i ne- gr ai ned soi l s, or hi ghl y or gani c soi l s by

ASTM D 2487.

1. 4. 4 Woody Mat er i al s

Woody mat er i al i s compr i sed of any, and al l t ypes of wood. Typi cal woody mat er i al s expect ed t o be encount er ed wi t hi n t he wor k l i mi t s i ncl ude l ogs, br anches, t wi gs, st umps, and dr i f t wood. Ot her t ypes of wood, such as l umber , may be encount er ed.

1. 4. 5 Debr i s

Debr i s i s compr i sed of al l ot her non- hazar dous mat er i al s t hat ar e not par t of t he st i l l i ng basi n.

1. 5 SUBMI TTALS

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

submi t t al s havi ng an " I " desi gnat i on ar e f or i nf or mat i on onl y.

Desi gnat i on f ol l owi ng t he " G" or " I " 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 SECTI ON 01 33 00 SUBMI TTAL PROCEDURE

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

Dr edgi ng Equi pment ; I , GT

SD- 06 Test Repor t s

Dr edge Accept ance Vi deo Foot age; G, GT

Det ai l ed Di ve I nspect i on Phot os; G, GT

Det ai l ed Di ve I nspect i on Vi deos; G, GT

Compi l ed Di ve I nspect i on Fi ndi ngs Repor t ; G, GT

PART 2 PRODUCTS

2. 1 VI SUALI ZATI ON PRODUCTS AND I NSPECTI ON DELI VERABLES

Pr ovi de a hi gh- r esol ut i on under wat er i magi ng syst em wi t h r eal t i me i mager y sui t abl e f or use i n mur ky wat er i ncl udi ng al l necessar y equi pment , suppl i es, f aci l i t i es, and exper i enced per sonnel t o pr ovi de under wat er v i sual i zat i on of t he wor ksi t e. Thi s syst em may be mount ed f r om a wor k pl at f or m or ot her sui t abl e l ocat i on i n or der t o moni t or wor k evol ut i ons i . e. l ocat i on of debr i s pi l es, r el at i ve l ocat i on of equi pment used f or debr i s r emoval , and di ver s and/ or i n wat er obj ect s. The syst em may al so be car r i ed by di ver or ROV as necessar y. The i nt ent of t hi s syst em i s t o di r ect t he bar ge t o debr i s pi l es and t o moni t or , i n r eal t i me, di ver s i n wat er and dr edgi ng equi pment . The f i el d of v i ew wi l l be at l east 90 degr ees and t he opt i mal wor ki ng r ange no l ess t han 150 f eet . The syst em and associ at ed equi pment must be capabl e of scanni ng t he under wat er wor k ar eas t o cr eat e hi gh- r esol ut i on i mager y. Thi s equi pment i s t o be i n pl ace and ut i l i zed dur i ng al l act i ve debr i s r emoval phases wi t h per sonnel suf f i c i ent l y knowl edgeabl e t o oper at e and adj ust t he syst em t o achi eve i mager y sui t abl e f or moni t or i ng and r ecor di ng pur poses. Al l dat a must be avai l abl e t o t he Gover nment upon r equest .

I ncor por at e t he f ol l owi ng i nf or mat i on i nt o t he v i deo and phot o f oot age, usi ng t ext over l ays and/ or audi o nar r at i ve t r acks as appl i cabl e, or by some ot her appr oved means.

a. Dat e

b. Ti me

c. Di ver or r emot el y oper at ed vehi c l e ( ROV) oper at or , as appl i cabl e

d. Sl ab or Gui de Wal l Sect i on Number

e. Descr i pt i on

2. 1. 1 Dr edge Accept ance Vi deo Foot age

Usi ng a di ver or ROV, or by some ot her appr oved means, r ecor d and pr ovi de vi deo f oot age capt ur ed dur i ng t he accept ance i nspect i on of t he dr edgi ng and sedi ment r emoval wor k t o pr ovi de a r ecor d of t he accept ance i nspect i on t o t he gover nment . The r equi r ement s f or t he v i deo del i ver abl es ar e cont ai ned i n t he f ol l owi ng par agr aphs.

2. 1. 1. 1 Legi bi l i t y

To be consi der ed accept abl e by t he Cont r act i ng Of f i cer , al l f eat ur es bei ng demonst r at ed by v i deo shal l be c l ear l y di scer nabl e.

2. 1. 1. 2 Vi deo Fi l e For mat

The vi deo f i l e f or mat of t he f oot age submi t t ed must be compat i bl e wi t h st andar d medi a pl ayer sof t war e, such as Vi deoLAN' s VLC Medi a Pl ayer .

Exampl e of accept abl e f i l e f or mat s i ncl ude MP4, MPEG, MOV, et c.

2. 1. 1. 3 Cover age

Fur ni sh v i deo f oot age t hat i ncl udes t he ent i r et y of t he ar ea wi t hi n t he wor k l i mi t s t o i ncl ude ever y s l ab, gui de wal l sect i on, and exposed concr et e sur f ace l ocat ed wi t hi n and i mmedi at el y adj acent t o t he i ndi cat ed wor k l i mi t s.

2. 1. 1. 4 Or gani zat i on of Vi deo Foot age

Pr ovi de a separ at e and compl et e v i deo f i l e f or each st i l l i ng basi n s l ab and gui de wal l sect i on i ndi cat ed i n t he cont r act dr awi ngs.

2. 1. 1. 5 Vi deo Fi l e Names

I ncl ude t he dam l ocat i on, s l ab or gui de wal l sect i on number pr ovi ded i n t he cont r act dr awi ngs, and t he dat e t he v i deo f oot age was r ecor ded bef or e t he f i l e ext ensi on, separ at ed by t he under scor e char act er ( _) f or each vi deo f i l e usi ng t he f or mat speci f i ed bel ow.

BBB_NN_YYYYMMDD. EEE

Wher e:

a. BBB i s t he st i l l i ng basi n f r om wher e t he f oot age was col l ect ed.

( 1) Use LMA f or t he Lower Monument al Dam.

( 2) Use LLA f or t he Lower Gr ani t e Dam.

b. NN i s t he s l ab or gui de wal l sect i on number i ndi cat ed i n t he cont r act dr awi ngs.

c. YYYYMMDD i s t he 8- di gi t dat e t he v i deo was r ecor ded.

( 1) YYYY i s t he 4- di gi t year .

( 2) MM i s t he 2- di gi t mont h.

( 3) DD i s t he 2- di gi t day.

d. EEE i s t he v i deo f i l e ext ensi on wher e t he speci f i c ext ensi on of t he f i l ename woul d be cont r ol l ed by t he v i deo f i l e f or mat .

Exampl e:

An i nspect i on v i deo f i l e cont ai ni ng f oot age of s l ab E4 at Lower Monument al , r ecor ded on 1 May 2024 woul d be named " LMA_E4_20240501. MP4" .

2. 1. 1. 6 Vi deo Fi l e Submi ssi on

Submi t t he v i deo f i l es on Ext er nal Har d Di sk Dr i ve ( HDD) , mai l ed i n accor dance wi t h appl i cabl e HC submi t t al r equi r ement s.

2. 1. 2 Det ai l ed Di ve I nspect i on Phot os

Pr ovi de al l phot os t aken dur i ng t he di ve i nspect i on of t he st i l l i ng basi n f or each sl ab and gui de wal l sect i on i ndi cat ed i n t he cont r act dr awi ngs.

The r equi r ement s f or t he phot o del i ver abl es ar e cont ai ned i n t he f ol l owi ng par agr aphs.

Fur ni sh under wat er phot ogr aphs f or each obser vat i on made as a r ecor d of i nspect i on. Capt ur e and pr ovi de as many phot ogr aphs as necessar y t o t hor oughl y pr esent each obser vat i on.

2. 1. 2. 1 Legi bi l i t y

To be consi der ed accept abl e by t he Cont r act i ng Of f i cer , al l f eat ur es bei ng demonst r at ed by phot o shal l be c l ear l y di scer nabl e.

2. 1. 2. 2 Di gi t al Phot o For mat s

Pr ovi de di gi t al phot o del i ver abl es i n JPEG f or mat as wel l as r aw i mage f i l es f or each phot o t aken. Ensur e t he camer a equi pment used i s capabl e of pr oduci ng r aw i mage f i l es.

2. 1. 2. 3 Di gi t al Phot ogr aph Fi l e Names

I ncl ude t he dam l ocat i on, s l ab or gui de wal l sect i on number i ndi cat ed i n t he cont r act dr awi ngs, and dat e t he phot ogr aph was t aken bef or e t he f i l e ext ensi on, separ at ed by t he under scor e char act er ( _) f or each phot o f i l e usi ng t he f or mat speci f i ed f or t he v i deo f oot age. I f mul t i pl e phot os ar e t aken f or a s l ab or gui de wal l sect i on, add an under scor e and a 2- di gi t ser i al number bef or e t he f i l e ext ensi on f or each phot ogr aph t aken.

Exampl e:

A di gi t al phot o f i l e of an obser vat i on made on sl ab E4 at t he Lower Monument al Dam, t aken on 1 May 2024 woul d be named " LMA_E4_20240501_01. JPG" , a second phot o t aken of an obser vat i on on t he same sl ab woul d be named " LMA_E4_20240501_02. JPG" .

2. 1. 3 Det ai l ed Di ve I nspect i on Vi deos

Usi ng a di ver or ROV, or by some ot her appr oved means, r ecor d and pr ovi de vi deo f oot age capt ur ed dur i ng t he det ai l ed di ve i nspect i on of t he condi t i on of t he st i l l i ng basi n t o pr ovi de a r ecor d of t he di ve i nspect i on obser vat i ons t o t he gover nment . The r equi r ement s f or t he v i deo del i ver abl es ar e cont ai ned i n t he f ol l owi ng par agr aphs.

2. 1. 3. 1 Legi bi l i t y

To be consi der ed accept abl e by t he Cont r act i ng Of f i cer , al l f eat ur es bei ng demonst r at ed by v i deo shal l be c l ear l y di scer nabl e.

2. 1. 3. 2 Vi deo Fi l e For mat

The vi deo f i l e f or mat of t he f oot age submi t t ed must be compat i bl e wi t h st andar d medi a pl ayer sof t war e, such as Vi deoLAN' s VLC Medi a Pl ayer .

Exampl e of accept abl e f i l e f or mat s i ncl ude MP4, MPEG, MOV, et c.

2. 1. 3. 3 Cover age

Fur ni sh v i deo f oot age t hat i ncl udes t he ent i r et y of t he ar ea wi t hi n t he wor k l i mi t s t o i ncl ude ever y s l ab, gui de wal l sect i on, and exposed concr et e sur f ace l ocat ed wi t hi n and i mmedi at el y adj acent t o t he i ndi cat ed wor k l i mi t s.

2. 1. 3. 4 Or gani zat i on of Vi deo Foot age

Pr ovi de a separ at e and compl et e v i deo f i l e f or each st i l l i ng basi n s l ab and gui de wal l sect i on i ndi cat ed i n t he cont r act dr awi ngs.

2. 1. 3. 5 Vi deo Fi l e Names

I ncl ude t he dam l ocat i on, s l ab or gui de wal l sect i on number i ndi cat ed i n t he cont r act dr awi ngs, and t he dat e t he v i deo f oot age was r ecor ded bef or e t he f i l e ext ensi on, separ at ed by t he under scor e char act er ( _) f or each vi deo f i l e usi ng t he f ol l owi ng f or mat .

BBB_NN_YYYYMMDD. EEE

Wher e:

a. BBB i s t he st i l l i ng basi n f r om wher e t he f oot age was col l ect ed.

( 1) Use LMA f or t he Lower Monument al Dam.

( 2) Use LLA f or t he Lower Gr ani t e Dam.

b. NN i s t he s l ab or gui de wal l sect i on number pr ovi ded i n t he cont r act dr awi ngs.

c. YYYYMMDD i s t he 8- di gi t dat e t he v i deo was r ecor ded.

( 1) YYYY i s t he 4- di gi t year .

( 2) MM i s t he 2- di gi t mont h.

( 3) DD i s t he 2- di gi t day.

d. EEE i s t he v i deo f i l e ext ensi on wher e t he speci f i c ext ensi on of t he f i l ename woul d be cont r ol l ed by t he v i deo f i l e f or mat .

Exampl e:

An i nspect i on v i deo f i l e cont ai ni ng f oot age of s l ab E4 at Lower Monument al Dam, r ecor ded on 1 May 2024 woul d be named " LMA_E4_20240501. MP4" .

2. 1. 3. 6 Vi deo Fi l e Submi ssi on

Submi t t he v i deo f i l es on Ext er nal Har d Di sk Dr i ve ( HDD) , mai l ed i n accor dance wi t h appl i cabl e HC submi t t al r equi r ement s. The mi ni mum number of v i deo f i l es expect ed t o be del i ver ed, at one f i l e per s l ab or gui de wal l sect i on, i s as f ol l ows:

a. 101 f i l es f or t he Lower Monument al Dam st i l l i ng basi n.

b. 102 f i l es f or t he Lower Gr ani t e Dam st i l l i ng basi n.

Mor e t han t he mi ni mum number of f i l es may be del i ver ed i f condi t i ons necessi t at e.

2. 1. 4 Compi l ed Di ve I nspect i on Fi ndi ngs Repor t

Pr epar e and f ur ni sh a f i nal compi l ed di ve i nspect i on f i ndi ngs r epor t . The r equi r ement s f or t he compi l ed di ve i nspect i on f i ndi ngs r epor t ar e cont ai ned i n t he f ol l owi ng par agr aphs.

2. 1. 4. 1 Cont ent

I ncl ude al l obser vat i ons made dur i ng t he det ai l ed di ve i nspect i on. Repor t any and al l di scr epanci es bet ween t he f i ni shed concr et e sur f aces i ndi cat ed i n t he r esour ce sheet s ( R- sheet s) pr ovi ded i n t he cont r act dr awi ngs and t he condi t i on of t he exi st i ng st i l l i ng basi n concr et e f eat ur es i nspect ed dur i ng t he di ve i nspect i on( s) . Pr ovi de t he l ocat i on and di mensi ons of each obser vat i on. At a mi ni mum, i ncl ude obser vat i ons f or t he f ol l owi ng i t ems:

a. Vi sual l y det ect abl e damage t o t he concr et e s l abs, gui de wal l sect i ons, and f eat ur es such as er oded ar eas, cavi t at ed r egi ons, spal l s, cr acks, et c.

b. Vi sual l y obvi ous l ocal i zed depr essi ons and er oded ar eas. Pr ovi de t he maxi mum dept h of t he depr essi on or er oded ar ea.

c. Any and al l exposed r ei nf or cement st eel al ong wi t h an est i mat e of t he per cent of st eel l ost due t o cor r osi on. Wher e t her e i s exposed st eel , pr ovi de t he di mensi on bet ween t he st eel and t he sur f ace of t he r emai ni ng concr et e.

d. Vi sual l y det ect abl e cr acks wi t h di f f er ent i al set t l ement s gr eat er t han 1/ 2 i nches or wi der t han 1/ 2 i nches.

e. Sl ab or gui de wal l sect i on j oi nt s exhi bi t i ng v i sual l y det ect abl e di f f er ent i al set t l ement s or upheaval s gr eat er t han 3 i nches.

I ncl ude a nar r at i ve summar y of t he i nspect i on f i ndi ngs det ai l i ng any pr obl ems encount er ed dur i ng t he i nspect i on al ong wi t h t he equi pment and met hods used t o obt ai n t he v i deo, phot o, and measur ement dat a cont ai ned i n t he r epor t . Pr ovi de a t abl e of cont ent s, l i s t of f i gur es, and an i ndex.

2. 1. 4. 2 Or gani zat i on

Or gani ze t he body of t he Compi l ed Di ve I nspect i on Fi ndi ngs Repor t by s l ab or gui de wal l sect i on as i ndi cat ed i n t he cont r act dr awi ngs.

2. 1. 4. 3 Del i ver abl es

Pr ovi de el ect r oni c PDF copi es of t he compl et ed f i nal r epor t al ong wi t h t hr ee paper based har d copi es of t he f i nal r epor t .

2. 1. 4. 4 Obser vat i on Pl an Map Pl ot

Pr epar e a PDF pl ot of t he l ocat i on of each r epor t ed obser vat i on made dur i ng t he det ai l ed di ve i nspect i on as i nst r uct ed i n t he Di ve I nspect i on Obser vat i on Locat i on Repor t i ng Schema. Use t he same convent i ons descr i bed i ncl uded i n t he schema r egar di ng f r om at and l i ne wor k col or . Use sheet C- 102 i n t he pl ans f or each dr awi ng vol ume as t he base pl an f or t he pl ot f or each dam.

I ncl ude a t abl e of obser vat i ons f or each dam i n t he r epor t i n accor dance wi t h t he gui dance pr ovi ded i n t he Di ve I nspect i on Obser vat i on Locat i on Repor t i ng Schema.

PART 3 EXECUTI ON

3. 1 EXCAVATI ON AND TRANSPORTI NG EQUI PMENT

3. 1. 1 Dr edgi ng Equi pment

Dr edgi ng shal l be per f or med usi ng appr opr i at e equi pment such as a c l amshel l , backhoe, dr agl i ne, or hydr aul i c dr edge equi pment . The Cont r act or shal l pr ovi de and ut i l i ze suf f i c i ent dr edgi ng equi pment of t he necessar y s i ze t o accompl i sh t he r equi r ed dr edgi ng. Sui t abi l i t y of t he excavat i ng equi pment and i t s manner of oper at i on shal l be as appr oved by t he Cont r act i ng Of f i cer . Submi t i nf or mat i on on dr edgi ng equi pment t o ver i f y t he equi pment meet s t he r equi r ement s of t hi s speci f i cat i on.

3. 1. 2 Wat er t i ght Bucket

Mechani cal excavat i on equi pment shal l be equi pped wi t h an excavat i ng bucket t hat i s as wat er t i ght as possi bl e.

3. 1. 3 Wor k Scow Oper at i ons

Over f l owi ng of dr edge wat er f r om t he wor k scows wi l l be al l owed dur i ng l oadi ng. Dur i ng t r anspor t t o t he di sposal s i t es, t he scow shal l be t i ght . Wat er and dr edged mat er i al shal l not be per mi t t ed t o over f l ow, l eak, or spi l l out of bar ges or dump scows. Cont ai ner s t hat ar e not t i ght shal l not be f ur t her ut i l i zed unt i l r epai r ed.

3. 2 DI VI NG WORK

3. 2. 1 Dr edgi ng

Use di ve l abor as needed t o expose as much of t he concr et e sur f ace as possi bl e and wher e appr opr i at e t o pr event damage t o t he st i l l i ng basi n sur f ace t hat may be caused by mechani cal dr edgi ng equi pment ( c l amshel l ) . .

a. Remove sedi ment par t i c l es gr eat er t han 3 i nches i n any di mensi on f r om t he st i l l i ng basi n wi t hi n t he sedi ment r emoval boundar y i ndi cat ed and di spose of t hese mat er i al s at t he desi gnat ed di sposal l ocat i ons ( see Par agr aph SCOPE/ Di sposal l ocat i ons above) .

b. Ensur e t he r emai ni ng par t i c l es do not f or m a l ayer or pi l e t hat obscur es t he sur f ace of t he concr et e f r om vi ew or bat hymet r i c sur vey i nst r ument s.

b. Remove smal l er par t i c l es t o ensur e t he r emai ni ng par t i c l es:

( 1) do not f or m a l ayer or pi l e t hat obscur es t he sur f ace of t he concr et e f r om vi ew or bat hymet r i c sur vey i nst r ument s.

( 2) consi st of onl y i ndi v i dual par t i c l es spaced no cl oser t han 2 f eet f r om any adj acent par t i c l e.

c. Exampl es of accept abl e r esul t s f ol l owi ng f i nal sedi ment r emoval ef f or t s ar e depi ct ed on Vol ume 1, C- 902, Phot os L12, A16, and F16. Exampl es of unaccept abl e r esul t s ar e depi ct ed on Vol ume 1, C- 902, Phot os F6 and A1 and Vol ume 2, C- 902, Phot o A11.

3. 2. 1. 1 Addi t i onal Requi r ement s f or Concr et e Joi nt s and Depr essi ons

Remove al l sedi ment mat er i al s f r om t he concr et e j oi nt s bet ween t he sl abs, gui de wal l sect i ons, and i n l ocal i zed depr essi ons and er oded ar eas i n t he concr et e sur f ace wi t hi n t he sedi ment r emoval boundar y.

3. 2. 2 Dr edge Accept ance I nspect i on

Accept ance of t he dr edgi ng and f i nal sedi ment r emoval wor k shal l be subj ect t o t he appr oval of t he Cont r act i ng Of f i cer . As sedi ment r emoval oper at i ons ar e compl et ed ( e. g. on a per s l ab or gui de wal l sect i on basi s) , pr ovi de a Dr edge Accept ance I nspect i on and f ur ni sh t he Dr edge Accept ance Vi deo Foot age.

3. 2. 2. 1 Dr edge Accept ance I nspect i on Schedul e

Pr ovi de 5 days advance not i ce of t he i nspect i on dat e( s) t o t he Cont r act i ng Of f i cer so t hat a gover nment r epr esent at i ve can obser ve t he vi deo f eed as t he di ver s conduct t he dr edge accept ance i nspect i on.

3. 2. 3 Det ai l ed Di ve I nspect i on

Af t er t he Cont r act i ng Of f i cer appr oves/ accept s t he dr edgi ng and f i nal sedi ment r emoval wor k, conduct a det ai l ed di ve i nspect i on of al l t he el ement s of t he st i l l i ng basi n apr on wi t hi n t he sedi ment r emoval boundar y.

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a. Pr ovi de t he speci f i ed i nspect i on dat a del i ver abl es t o i ncl ude Det ai l ed Di ve I nspect i on Phot os, Det ai l ed Di ve I nspect i on Vi deos, and t he Compi l ed Di ve I nspect i on Fi ndi ngs Repor t .

b. Dur i ng t he Det ai l ed Di ve I nspect i on, i nspect and r epor t obser vat i ons i n accor dance wi t h t he schema pr ovi ded i n t he at t achment t i t l ed Di ve I nspect i on Obser vat i on Locat i on Repor t i ng Schema.

3. 2. 3. 1 I nspect i on I t ems

I nspect each and ever y s l ab, gui de wal l sect i on, and st i l l i ng basi n f eat ur e wi t hi n t he sedi ment r emoval boundar y i dent i f i ed i n t he cont r act dr awi ngs. At a mi ni mum, i nspect f or and not e obser vat i ons f or t he f ol l owi ng condi t i ons of each sl ab, gui de wal l sect i on, and f eat ur e:

a. Vi sual l y det ect abl e damage t o t he concr et e s l abs, gui de wal l sect i ons, and f eat ur es such as er oded ar eas, cavi t at ed r egi ons, spal l s, cr acks, et c.

b. Vi sual l y det ect abl e l ocal i zed depr essi ons and er oded ar eas. Pr ovi de t he maxi mum dept h of t he of t he depr essi on or er oded ar ea.

c. I nspect any and al l exposed r ei nf or cement st eel . Descr i be i f t he bar s ar e br oken or bent , or r emai n as a hor i zont al mat . Pr ovi de an est i mat e of t he maxi mum per cent age of r ei nf or cement st eel sect i on l ost . Base t he est i mat e on t he t hi nnest por t i on of t he r ei nf or cement st eel exposed i n each r epor t ed r egi on of exposed r ei nf or cement st eel .

d. I nspect f or v i sual l y det ect abl e cr acks t hat 1/ 2 i nches or wi der t hat exhi bi t di f f er ent i al set t l ement s 1/ 2 i nches or gr eat er .

e. I nspect s l ab and gui de wal l sect i on j oi nt s exhi bi t i ng v i sual l y det ect abl e di f f er ent i al set t l ement s or upheaval s 3 i nches or gr eat er .

f . For s l abs, gui de wal l sect i ons, and st i l l i ng basi n f eat ur es t hat ar e f r ee of def ect s, not e t he obser vat i on and i ncl ude t hose f i ndi ngs wi t h t he speci f i ed del i ver abl es. Repor t " No Def ect s Obser ved" f or each f eat ur e ( e. g. , s l ab, end si l l , et c. ) of t he st i l l i ng basi n f ound t o be f r ee of def ect s dur i ng t he det ai l ed di ve i nspect i on.

3. 3 DREDGED MATERI AL OTHER THAN SEDI MENTS

3. 3. 1 Hazar dous Mat er i al s

I f t he Cont r act or f i nds any bur i ed cont ai ner s such as 55- gal l on dr ums or not i ces any unusual condi t i ons t hat mi ght i ndi cat e chemi cal s or hazar dous wast e, t he Cont r act or shal l i mmedi at el y cease oper at i ons i n t he ar ea, and not i f y t he Cont r act i ng Of f i cer . The dr edge oper at i on shal l be moved f r om t he af f ect ed ar ea and shal l cont i nue i n a di f f er ent ar ea.

3. 4 DI SPOSAL OF DREDGED SEDI MENTS

Di sposal of dr edged sedi ment mat er i al s shal l be at t he Swi f t Bar Di sposal Ar ea l ocat ed bet ween Ri ver Mi l es 95 and 96 or t he Joso Di sposal Ar ea l ocat ed at Ri ver Mi l e 57, as i ndi cat ed i n t he cont r act dr awi ngs. Do not di spose of any sedi ment mat er i al out s i de t he di sposal ar ea l i mi t s i ndi cat ed i n t he cont r act dr awi ngs.

3. 5 FI SH MONI TORI NG

Dur i ng dr edgi ng and di sposal act i v i t i es, t he Cont r act or shal l moni t or f or s i ck, i nj ur ed, or dead f i sh. The Cont r act or shal l v i sual l y moni t or t he wat er s sur r oundi ng t he dr edgi ng and di sposal act i v i t i es. I f t he Cont r act or f i nds a s i ck, i nj ur ed, or dead speci men, i mmedi at el y pl ace t he f i sh i n a cont ai ner of col d r i ver wat er and cont act t he Cont r act i ng Of f i cer wi t hi n one hour . The f i sh shal l be r et ai ned unt i l r ecei v i ng f ur t her i nst r uct i ons f r om t he Cont r act i ng Of f i cer . I f a f i sh has been ent r ai ned by t he dr edgi ng oper at i ons, t he Cont r act or shal l make ever y r easonabl e at t empt t o r et ur n t he speci men saf el y back t o t he r i ver .

3. 6 ADDI TI ONAL RESTRI CTI ONS

3. 6. 1 Pr ot ect Exi st i ng Faci l i t i es

The Cont r act or i s r esponsi bl e f or pr ot ect i ng al l exi st i ng f aci l i t i es f r om damage r esul t i ng f r om t he Cont r act or ' s oper at i ons. Fur t her , t he Cont r act or must t ake al l necessar y pr ecaut i ons t o pr event damage t o exi st i ng f aci l i t i es r esul t i ng f r om t he Cont r act or ' s oper at i ons.

3. 6. 1. 1 Responsi bl e f or Damages

The Cont r act or assumes l i abi l i t y f or al l damage t o exi st i ng f aci l i t i es and Gover nment pr oper t y di r ect l y r esul t i ng f r om t he Cont r act or ' s oper at i ons.

3. 6. 2 Under mi ni ng Pr event i on

The Cont r act or i s r esponsi bl e t o pr ot ect f oundat i on of t he st i l l i ng basi n st r uct ur es f r om under mi ni ng caused by over excavat i ng sedi ment downst r eam of t he st i l l i ng basi n st r uct ur es. Do not di st ur b t he r i ver bot t om downst r eam of t he st i l l i ng basi n end si l l s bel ow or beyond t he excavat i on l i mi t s i ndi cat ed i n t he cont r act dr awi ngs.

3. 7 LOCATI ON CONTROL MARKERS

3. 7. 1 Swi f t Bar HMU Di sposal Si t e

The Cont r act or shal l pl ace suf f i c i ent l and mar ker s, l i ght s, and buoys at t he di sposal s i t e t o al l ow easy ver i f i cat i on t hat al l mat er i al s deposi t ed ar e pl aced wi t hi n t he l i mi t s i ndi cat ed.

3. 7. 2 Dr edge Locat i ons

Each ni ght , bet ween sunset and sunr i se and dur i ng per i ods of r est r i ct ed vi s i bi l i t y , pr ovi de l i ght s f or f l oat i ng pl ant s, pi pel i nes, r anges, and mar ker s. Al so, pr ovi de l i ght s f or buoys t hat coul d endanger or obst r uct navi gat i on. When ni ght wor k i s i n pr ogr ess, mai nt ai n l i ght s f r om sunset t o sunr i se f or t he obser vat i ons of dr edgi ng oper at i ons. Li ght i ng shal l conf or m t o Uni t ed St at es Coast Guar d r equi r ement s f or v i s i bi l i t y and col or .

3. 7. 3 Appr oval of Mar ker Locat i ons

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

13t h Coast Guar d Di st r i ct , Pr i vat e Ai ds t o Navi gat i on

Ti m West cot t , 206- 220- 7285 Dar yl Pel oqui n, 206- 220- 7280

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SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 1 OF 1 PAGES

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SPILLWAY STILLING BASIN SEDIMENT REMOVAL

35 01 50.59 28 SD-01 Preconstruction Submittals

3.1.1 I GTDredging Equipment

SD-06 Test Reports

2.1.1 G GTDredge Acceptance Video

Footage

3.2.3 G GTDetailed Dive Inspection Photos

3.2.3 G GTDetailed Dive Inspection Videos

2.1.4 G GTCompiled Dive Inspection

Findings Report

3.2.3 G GTCompiled Dive Inspection

Findings Report

SUBMITTAL REGISTER

CONTRACT NO.

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1.5 SUBMITTALS

3.6.2 Undermining Prevention