Site_0521-41_AM0005_Specs.pdf

SOLICIATION NO. W91238-19-B-0012

1 of 1 AM0005

FEATHER RIVER RIGHT BANK

SUTTER COUNTY, CALIFORNIA

PL 84-99 EMERGENCY LEVEE REPAIRS

SITE 0521-41

AMENDMENT 0005 - SUMMARY:

A) SPECIFICATION 2213

1) Replaced entire section 31 00 00.

2) Replaced entire section 31 56 14.

12 September 2019

PL 84- 99 Emer gency Levee Repai r Spec No. 2213 Si t e 0521- 41 - Feat her Ri ver

SECTI ON TABLE OF CONTENTS

DI VI SI ON 31 - EARTHWORK

SECTI ON 31 00 00

EARTHWORK

PART 1 GENERAL

1. 1 REFERENCES

1. 2 DEFI NI TI ONS

1. 2. 1 Sui t abl e Mat er i al s

1. 2. 2 Unsui t abl e Mat er i al s

1. 2. 3 Fi l l Mat er i al

1. 2. 3. 1 Random Fi l l

1. 2. 3. 2 Levee Fi l l

1. 2. 3. 3 Tempor ar y Soi l Cap

1. 2. 4 Degr ee of Compact i on

1. 3 QUALI FI CATI ONS

1. 3. 1 Ear t hwor k Cont r act or

1. 3. 2 Fi el d Qual i t y Cont r ol Repr esent at i ve

1. 4 SUBMI TTALS

1. 5 GENERAL CONDI TI ONS

1. 5. 1 Li nes and Gr ades

1. 5. 2 Conduct of t he Wor k

1. 5. 3 Fi l l Mat er i al s

1. 5. 4 Haul Roads, Wor ki ng Sur f aces, and Tempor ar y Ramps

1. 5. 5 Excavat i ons

1. 5. 6 Sl i des and Foundat i on Fai l ur es

1. 5. 7 Dr ai nage Requi r ement s

1. 5. 8 Ut i l i t i es

1. 5. 9 Pr ot ect i on of Exi st i ng Man- Made Faci l i t i es and Nat ur al Feat ur es

PART 2 PRODUCTS

2. 1 MATERI ALS

2. 2 TYPES OF FI LL MATERI ALS

2. 2. 1 Levee Fi l l

2. 2. 2 Random Fi l l

2. 2. 3 Tempor ar y Soi l Cap

2. 2. 4 Top Soi l

2. 3 I MPORTED FI LL

2. 3. 1 Gener al Chemi cal Test i ng Requi r ement s

2. 3. 2 Bor r ow Si t e Soi l Sampl i ng Wor k Pl an

2. 3. 3 Sampl e Col l ect i on

2. 3. 4 Chemi cal Test i ng

2. 3. 5 Sol uabl e Const i t uent Test i ng

2. 3. 6 Pot ent i al Cont ami nant s of Concer n and Scr eeni ng Cr i t er i a

2. 3. 7 Sampl i ng Cost

2. 3. 8 Bor r ow Ar ea Chemi cal Sui t abi l i t y Cer t i f i cat i on Repor t

PART 3 EXECUTI ON

3. 1 TOLERANCES

3. 2 PREPARATI ON OF FOUNDATI ON, PARTI AL FI LL SURFACES AND EMBANKMENTS

SECTI ON 31 00 00 Page 1

AM0005

3. 2. 1 Foundat i on Pr epar at i on

3. 2. 2 Benchi ng

3. 2. 3 Pr epar at i on of Cut of f Wal l Wor ki ng Sur f ace

3. 2. 4 Shor i ng and Sheet i ng

3. 2. 5 Dewat er i ng

3. 2. 6 Levee Excavat i on

3. 2. 7 Over - Excavat i on

3. 2. 8 Sl opes and Sur char ges

3. 3 PLACEMENT AND SPREADI NG

3. 3. 1 Gener al

3. 3. 1. 1 Gr adat i on and Di st r i but i on

3. 3. 1. 2 Foundat i ons and Par t i al Embankment Fi l l s

3. 3. 1. 3 Equi pment Tr af f i c

3. 3. 2 Fi l l Mat er i al s

3. 3. 3 Tempor ar y Soi l Cap

3. 3. 4 Top Soi l

3. 3. 5 Er osi on Cont r ol Seedi ng

3. 4 MOI STURE CONTROL

3. 4. 1 Gener al

3. 4. 1. 1 I nsuf f i c i ent Moi st ur e f or Sui t abl e Bond

3. 4. 1. 2 Excessi ve Moi st ur e f or Sui t abl e Bond

3. 4. 1. 3 Dr yi ng Wet Mat er i al

3. 4. 1. 4 I ncr easi ng Moi st ur e i n Dr y Mat er i al

3. 4. 2 Moi st ur e Cont ent Requi r ement s

3. 5 COMPACTI ON

3. 5. 1 Compact i on Equi pment

3. 5. 1. 1 Tampi ng Rol l er s

3. 5. 1. 2 Vi br at or y Rol l er s

3. 5. 1. 3 Rubber - Ti r ed Rol l er s

3. 5. 1. 4 Hand Oper at ed Compact or s

3. 5. 1. 5 Cr awl er - Type Tr act or s

3. 5. 1. 6 Mi scel l aneous Equi pment

3. 5. 2 Compact i on of Fi l l

3. 6 STOCKPI LES

3. 7 FI ELD QUALI TY CONTROL

3. 7. 1 Gener al

3. 7. 2 Embankment and Fi l l Test i ng

3. 7. 3 Repor t i ng

3. 8 ACCEPTANCE

ATTACHMENTS:

I mpor t ed Fi l l Chemi cal Scr eeni ng Li mi t s

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

SECTI ON 31 00 00 Page 2

SECTI ON 31 00 00

EARTHWORK

PART 1 GENERAL

The wor k cover ed by t hi s sect i on consi st s of f ur ni shi ng al l pl ant , l abor , equi pment , and mat er i al s and of per f or mi ng al l oper at i ons i n connect i on wi t h ear t hwor k, i n accor dance wi t h t hese Speci f i cat i ons and appl i cabl e Pl ans.

Excavat i on and r econst r uct i on/ modi f i cat i on of t he exi st i ng l evee embankment wi l l be r equi r ed i n or der t o const r uct a soi l bent oni t e cut of f wal l . Levee f i l l mat er i al s wi l l consi st of i mpor t ed bor r ow mat er i al s and excavat ed mat er i al s, i f meet i ng pr oj ect cr i t er i a.

1. 1 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 D1140 ( 2000; R 2006) Amount of Mat er i al i n Soi l s Fi ner t han t he No. 200 ( 75- mi cr omet er ) Sieve

ASTM D1556/ D1556M ( 2015; E 2016) St andar d Test Met hod f or Densi t y and Uni t Wei ght of Soi l i n Pl ace by Sand- Cone Met hod

ASTM D2216 ( 2010) Labor at or y Det er mi nat i on of Wat er ( Moi st ur e) Cont ent of Soi l and Rock by Mass

ASTM D2487 ( 2017) St andar d Pr act i ce f or Cl assi f i cat i on of Soi l s f or Engi neer i ng Pur poses ( Uni f i ed Soi l Cl assi f i cat i on System)

ASTM D3740 ( 2012a) Mi ni mum Requi r ement s f or Agenci es Engaged i n t he Test i ng and/ or I nspect i on of Soi l and Rock as Used i n Engi neer i ng Desi gn and Const r uct i on

ASTM D4318 ( 2017; E 2018) St andar d Test Met hods f or Li qui d Li mi t , Pl ast i c Li mi t , and Pl ast i c i t y I ndex of Soi l s

ASTM D4643 ( 2017) St andar d Test Met hod f or Det er mi nat i on of Wat er Cont ent of Soi l and Rock by Mi cr owave Oven Heat i ng

ASTM D5080 ( 2017) St andar d Test Met hod f or Rapi d Det er mi nat i on of Per cent Compact i on

ASTM D6913 ( 2004; R 2009; E 2014) St andar d Test

SECTI ON 31 00 00 Page 3

Met hods f or Par t i c l e- Si ze Di st r i but i on ( Gr adat i on) of Soi l s Usi ng Si eve Anal ysi s

ASTM D6938 ( 2017a) St andar d Test Met hod f or I n- Pl ace Densi t y and Wat er Cont ent of Soi l and Soi l - Aggr egat e by Nucl ear Met hods ( Shal l ow Depth)

ASTM D698 ( 2012; E 2014; E 2015) Labor at or y Compact i on Char act er i st i cs of Soi l Usi ng St andar d Ef f or t ( 12, 400 f t - l bf / cu. f t .

( 600 kN- m/ cu. m. ) )

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

ER 1110- 1- 261 ( 1999) Qual i t y Assur ance of Labor at or y Test i ng Pr ocedur es

1. 2 DEFINITIONS

1. 2. 1 Sui t abl e Mat er i al s

Sui t abl e mat er i al s shal l consi st of soi l s meet i ng t he r equi r ement s of par agr aph 2. 2, TYPES OF FI LL MATERI ALS. Sui t abl e mat er i al s shal l be f r ee f r om debr i s and or gani c mat er i al as def i ned her ei n.

1. 2. 2 Unsui t abl e Mat er i al s

Unsui t abl e mat er i al s i ncl ude al l ot her mat er i al s t hat ar e not def i ned as sui t abl e mat er i al s i n par agr aph 1. 2. 1 Sui t abl e Mat er i al s. Mat er i al s shal l not be c l assi f i ed as unsui t abl e based sol el y on moi st ur e cont ent . Mat er i al cont ai ni ng r oot s gr eat er t han 1/ 2- i nch i n di amet er , debr i s, r ubbl e, t r ash or ot her del et er i ous i t ems shal l be c l assi f i ed as unsui t abl e mat er i al s.

Unsui t abl e mat er i al s shal l be di sposed of i n accor dance wi t h al l appl i cabl e l aws and r egul at i ons.

Soi l s cont ai ni ng v i s i bl e concent r at i ons of or gani cs or c l assi f i ed as or gani c c l ay or or gani c s i l t ( OH or OL) ar e unsui t abl e, except f or t op soi l s t r i ppi ngs t o be r espr ead on l evee sl opes.

1. 2. 3 Fi l l Mat er i al

The t er ms " embankment " or " f i l l " or " backf i l l " as used i n t hese Speci f i cat i ons ar e def i ned as t he ear t h f i l l por t i ons of t he l evee embankment st r uct ur e, ot her f i l l s r el at ed t o t he l evee, or ot her f i l l s wi t hi n t he l i mi t s of t he pr oj ect .

1. 2. 3. 1 Random Fi l l

Ear t hen f i l l t o be pl aced i n t he l evee embankment as shown on t he Pl ans consi st i ng of sui t abl e mat er i al s meet i ng t he r equi r ement s of par agr aph 2. 2

TYPES OF FI LL MATERI ALS.

1. 2. 3. 2 Levee Fi l l

Ear t hen f i l l t o be pl aced i n t he l evee embankment and cut of f wal l s t ar t er

SECTI ON 31 00 00 Page 4 t r ench as shown on t he Pl ans consi st i ng of sui t abl e mat er i al s meet i ng t he r equi r ement s of par agr aph 2. 2 TYPES OF FI LL MATERI ALS.

1. 2. 3. 3 Tempor ar y Soi l Cap

Ear t hen f i l l t o be pl aced over compl et ed cut of f wal l . Tempor ar y Soi l Cap shal l consi st of sui t abl e mat er i al s meet i ng t he r equi r ement s of par agr aph 2. 2 TYPES OF FI LL MATERI ALS.

1. 2. 4 Degr ee of Compact i on

Degr ee of compact i on shal l be expr essed as a per cent age of t he maxi mum densi t y obt ai ned by t he t est pr ocedur e pr esent ed i n ASTM D698, abbr evi at ed her ei n as per cent of l abor at or y maxi mum densi t y.

1. 3 QUALIFICATIONS

1. 3. 1 Ear t hwor k Cont r act or

The ear t hwor k cont r act or per f or mi ng l evee const r uct i on and r econst r uct i on shal l have exper i ence i n pr oj ect s of s i mi l ar s i ze and scope compl et ed i n t he l ast 5 year s. The pr oj ect exper i ence must have been per f or med by t he ent i t y pr oposi ng t o per f or m t he wor k as def i ned bel ow. An i ndi v i dual ' s exper i ence f r om f or mer compani es shal l not qual i f y as cont r act or exper i ence pr ovi ded t hat t he i ndi v i dual i s t he Cont r act or ' s desi gnat ed Pr oj ect Manager or Si t e Super i nt endent . Qual i f y i ng exper i ence i n l evee const r uct i on and r econst r uct i on shal l consi st of t he f ol l owi ng:

Sat i sf act or i l y per f or med t he wor k and compl et ed t he const r uct i on of at least three ear t hen l evee pr oj ect s or ear t h f i l l dam pr oj ect s. The pr oj ect s must have i ncl uded a mi ni mum l evee embankment quant i t y of 50, 000 cubi c yar dsone project that included placing at least 50,000 cubic yards of engineered fill for flood control levee, earth dam, or earthen embankment for water retention or conveyance, completed within the last five years.

1. 3. 2 Fi el d Qual i t y Cont r ol Repr esent at i ve

The ear t hwor k cont r act or shal l mai nt ai n a f i el d qual i t y cont r ol r epr esent at i ve ( FQCR) of an i ndependent t est i ng l abor at or y at t he s i t e on a f ul l - t i me basi s t o per f or m i nspect i on and t est i ng i n accor dance wi t h par agr aph 3. 8 FI ELD QUALI TY CONTROL. The i ndi v i dual shal l have ser ved i n t he FQCR r ol e on at l east t hr ee l evee pr oj ect s compl et ed i n t he l ast 10 year s and have exper i ence i n al l aspect s of ear t hwor k const r uct i on.

1. 4 SUBMITTALS

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

Excavat i on Pl an; G

Pr e- Const r uct i on Access Road Sur vey

Pr e- Const r uct i on Levee Sur vey; G

Equi pment Dat a; G

SECTI ON 31 00 00 Page 5

Bor r ow Si t e Excavat i on Pl an; G

Shor i ng and Sheet i ng Pl an; G

Pl an of Oper at i ons; G

Fl ood St age Cont i ngency Pl an; G

Bor r ow Ar ea Chemi cal Sui t abi l i t y Cer t i f i cat i on Repor t

SD- 03 Pr oduct Dat a

Embankment and Backf i l l Mat er i al s ; G

SD- 09 Manuf act ur er ' s Fi el d Repor t s

Qual i t y Cont r ol Test i ng; G

Test Dat a Summar i es; G

Const r uct i on Ver i f i cat i on Sur vey Repor t ; G

SD- 11 Cl oseout Submi t t al s

Post - Const r uct i on Access Road Sur vey

Post - Const r uct i on Levee Sur vey; G

1. 5 GENERAL CONDI TI ONS

1. 5. 1 Li nes and Gr ades

The Cont r act or shal l submi t a Pr econst r uct i on Access Road Sur vey and a Post - Const r uct i on Access Road Sur vey showi ng adequat e det ai l per par agr aph

1. 12 of Sect i on 01 00 00 GENERAL REQUI REMENTS.

The por t i on of exi st i ng l evee r emoved f or const r uct i on of t he set back l evee shal l be const r uct ed t o meet pr e- const r uct i on l i nes and gr ades as det er mi ned by sur veys not ed i n par agr aph 1. 13 of Sect i on 01 00 00 GENERAL REQUI REMENTS. Submi t copi es of t he Pr econst r uct i on Levee Sur vey and t he Post - Const r uct i on Levee Sur vey i n accor dance wi t h Sect i on 01 00 00 GENERAL REQUI REMENTS. Submi t wr i t t en cer t i f i cat i on t hat t he dat a i s accur at e and sur veyi ng was per f or med by a l i censed sur veyor aut hor i zed t o pr act i ce l and sur veyi ng i n t he St at e of Cal i f or ni a. Submi t al l dat a wi t hi n 24 hour s of per f or mi ng f i el d sur veys per par agr aph 1. 13 of Sect i on 01 00 00 GENERAL

REQUIREMENTS.

Wher e var i at i ons ar e not ed on t he Pl ans, t he embankment s and backf i l l s shal l be const r uct ed t o t he l i nes, gr ades, and cr oss sect i ons i ndi cat ed on t he Pl ans, unl ess ot her wi se di r ect ed by t he Cont r act i ng Of f i cer . The Cont r act i ng Of f i cer r eser ves t he r i ght t o i ncr ease or decr ease t he f oundat i on wi dt hs and embankment s l opes or t o make such ot her changes i n t he embankment or backf i l l sect i ons as may be deemed necessar y t o pr oduce a saf e st r uct ur e. Changes i n quant i t i es r esul t i ng f r om such r evi s i ons wi l l not const i t ut e j ust i f i cat i on f or change i n cont r act uni t pr i ces, except as pr ovi ded f or i n Sect i on 01 00 00 GENERAL REQUI REMENTS.

SECTI ON 31 00 00 Page 6

1. 5. 2 Conduct of t he Wor k

Twent y days pr i or t o commencement of haul r oad const r uct i on or pl aci ng embankment and backf i l l , whi chever i s ear l i er , t he Cont r act or shal l submi t f or r evi ew a Pl an of Oper at i ons f or accompl i shi ng al l embankment and backf i l l const r uct i on and f or t he l ocat i on and const r uct i on of haul r oads.

The pl an shal l be r evi ewed and appr oved by t he Cont r act i ng Of f i cer pr i or t o t he st ar t of Wor k. Thi s pl an shal l i ncl ude, but not be l i mi t ed t o, t he Cont r act or ' s pr oposed sequence of const r uct i on f or embankment and backf i l l i t ems, and met hods and t ypes of equi pment t o be ut i l i zed f or al l embankment and backf i l l oper at i ons, i ncl udi ng t r anspor t i ng, pl aci ng, and compact i on.

Thi s pl an shal l al so i ncl ude t he names and addr esses of t he commer ci al t est i ng l abs whi ch wi l l per f or m t he soi l t est i ng and i nspect i on and descr i be how al l r equi r ed soi l s t est i ng wi l l be per f or med and r epor t ed.

The r equi r ement s f or i ndependent t est i ng l abor at or i es shal l meet r equi r ement s of Sect i on 01 45 00 QUALI TY CONTROL.

The Cont r act or shal l mai nt ai n and pr ot ect t he embankment , backf i l l , and any i dent i f i ed exi st i ng st r uct ur es, ut i l i t i es, and t r ees i n a sat i sf act or y condi t i on at al l t i mes unt i l f i nal compl et i on and accept ance of al l wor k under t he Cont r act . The Cont r act or shal l submi t a l i s t of equi pment dat a used f or haul i ng, f i l l pl acement , compact i on, and spr i nkl i ng equi pment and i ncl ude wei ght s, s i ze, and cont act pr essur es as par t of t he Pl an of Oper at i ons. I f t he haul i ng equi pment causes hor i zont al shear pl anes or s l i ckensi des, r ut t i ng, quaki ng, heavi ng, cr acki ng, or excessi ve def or mat i on of t he embankment or backf i l l , t he Cont r act or shal l l i mi t t he t ype, l oad, or t r avel speed of t he haul i ng equi pment on t he embankment or backf i l l . The Cont r act or may be r equi r ed t o r emove, at hi s own expense, any embankment mat er i al pl aced out s i de of pr escr i bed s l ope l i nes. Any appr oved embankment or backf i l l mat er i al whi ch i s l ost i n t r ansi t or r ender ed unsui t abl e af t er bei ng pl aced i n t he embankment or backf i l l and bef or e f i nal accept ance of t he wor k shal l be r epl aced by t he Cont r act or i n a sat i sf act or y manner and no addi t i onal payment wi l l be made. The Cont r act or shal l excavat e and r emove f r om t he embankment or backf i l l any mat er i al whi ch i s unsat i sf act or y and shal l al so di spose of such mat er i al and r ef i l l t he excavat ed ar ea as di r ect ed, al l at no cost t o t he Gover nment .

The Cont r act or shal l r est or e al l di st ur bed r oads and ar eas t o t he pr e- const r uct i on condi t i on.

1. 5. 3 Fi l l Mat er i al s

Submi t a Bor r ow Si t e Excavat i on Pl an t hat descr i bes wher e of f s i t e mat er i al wi l l be obt ai ned, pl aced, st ockpi l ed and bl ended wi t h onsi t e excavat i on soi l s f or usage or f or t empor ar y di sposal . The pl an shal l pr ovi de c l ear descr i pt i ons of expl or at i on, sampl i ng, and i nvest i gat i ons and shal l descr i be how suf f i c i ent mat er i al s wi l l be obt ai ned f r om t he pr oposed bor r ow source.

Thi s i nf or mat i on shal l be submi t t ed wi t hi n 10 days af t er t he not i ce t o pr oceed and at l east 30 days bef or e mat er i al s ar e br ought on s i t e. Descr i be how mat er i al s excavat ed f r om t he bor r ow ar ea shal l be i dent i f i ed t o al l ow f i el d per sonnel t o det er mi ne t he appr opr i at e end use of t he mat er i al .

Mat er i al s f or l evee embankment const r uct i on shal l be sui t abl e mat er i al s obt ai ned f r om t he Cont r act or sel ect ed bor r ow ar eas and pr oj ect excavat i ons.

The Cont r act or shal l bl end and r euse pr oj ect excavat i ons t o t he maxi mum ext ent possi bl e. Mat er i al s shal l be bl ended at t he appr oved st agi ng ar ea( s) . Of f - s i t e bor r ow mat er i al s shal l be t est ed f or sui t abi l i t y pr i or t o

SECTI ON 31 00 00 Page 7 t r anspor t t o s i t e. Mat er i al not meet i ng t he speci f i ed r equi r ement s shal l be haul ed of f s i t e and di sposed of i n a l egal manner .

1. 5. 4 Haul Roads, Wor ki ng Sur f aces, and Tempor ar y Ramps

Haul r oads, wor k i ng sur f aces, and t empor ar y r amps shal l be l ocat ed and const r uct ed wi t hi n t he const r uct i on l i mi t s shown on t he Pl ans. Pr i or t o t he commencement of const r uct i on t he Cont r act or shal l submi t f or r evi ew a s i t e pl an det ai l i ng t he l ocat i on of al l haul r oads and t empor ar y r amps wi t hi n t he const r uct i on l i mi t s.

Haul r oads, wor k i ng sur f aces, and t empor ar y r amps shal l be const r uct ed t o mai nt ai n t he i nt ended t r af f i c and be mai nt ai ned i n good condi t i on t hr oughout t he cont r act per i od. Haul r oads and r amps whi ch cr oss any cr eek or dr ai nage channel shal l be const r uct ed and mai nt ai ned by t he Cont r act or so as t o not f l ood ei t her upst r eam ar eas by r est r i c t i ng st r eam f l ows or f l ood downst r eam ar eas by t he r el ease of any st or ed wat er i n t he event t hat t he cr ossi ng f ai l s f or any cause. Haul r oads, wor k i ng sur f aces, and r amps const r uct ed dur i ng t he cont r act dur at i on shal l be r emoved af t er wor k i s compl et ed and t he i mpact ed ar ea r est or ed t o i t s pr econst r uct i on condi t i ons. Access r amps shal l be const r uct ed wi t h i mpor t ed f i l l onl y. No cut t i ng i nt o exi st i ng gr ound or f i l l f or access shal l be per mi t t ed. Al l cost s associ at ed wi t h t hese haul r oads and r amps shal l be consi der ed as a subsi di ar y obl i gat i on of t he Cont r act or .

1. 5. 5 Excavations

The Cont r act or shal l submi t a wr i t t en Excavat i on Pl an a mi ni mum of 20 days pr i or t o t he begi nni ng of any excavat i on wor k. Thi s pl an shal l be r evi ewed and appr oved by t he Cont r act i ng Of f i cer pr i or t o st ar t i ng any excavat i on wor k. I f necessar y, t he pl an shal l be modi f i ed as r equi r ed t o meet f i el d condi t i ons, and t he modi f i cat i ons shal l be r evi ewed pr i or t o use. As a mi ni mum, t he pl an shal l i ncl ude t he f ol l owi ng:

a. Pr oposed met hods f or pr event i ng i nt er f er ence wi t h, or damage t o, exi st i ng under gr ound and over head ut i l i t y l i nes, t r ees desi gnat ed t o r emai n, and ot her exi st i ng i mpr ovement s or nat ur al f eat ur es desi gnat ed t o r emai n wi t hi n or adj acent t o t he const r uct i on r i ght - of - way.

b. The pr oposed met hods f or cont r ol l i ng sur f ace and gr oundwat er i n t he excavations.

c. St ockpi l i ng and bl endi ng pl an f or embankment mat er i al showi ng l ocat i ons, st ockpi l e hei ght s, s l opes, l i mi t s, and dr ai nage ar ound t he st ockpi l e ar eas.

d. A compl et e l i s t i ng of equi pment used f or excavat i on and t r anspor t of t he excavat ed mat er i al .

e. The Cont r act or ' s pr oposed sequence of wor k f or excavat i ng wi t h pl an and cr oss sect i onal v i ews showi ng st ar t i ng and f i nal wor k l ocat i ons and cl ear i ng, gr ubbi ng and st r i ppi ng l i mi t s.

f . The Cont r act or ' s pr oposed r oad pat t er n and pl an f or i mpl ement i ng dust cont r ol measur es.

1. 5. 6 Sl i des and Foundat i on Fai l ur es

The Cont r act or shal l r epai r any s l i di ng t hat occur s i n any par t of t he

SECTI ON 31 00 00 Page 8 exi st i ng embankment and backf i l l s pr escr i bed i n t hi s sect i on pr i or t o f i nal accept ance of t he wor k. When t he s l i de i s caused t hr ough t he f aul t of t he Cont r act or , t he r epai r shal l be made at no cost t o t he Gover nment . The Cont r act i ng Of f i cer shal l be t he sol e j udge of whet her a s l i de or f oundat i on f ai l ur e i s caused t hr ough a f aul t of t he Cont r act or . The Cont r act or shal l submi t a pl an det ai l i ng how t he r epai r wi l l be compl et ed.

The pl an shal l be r evi ewed and appr oved by t he Cont r act i ng Of f i cer pr i or t o t he st ar t of r epai r wor k. When t he s l i de i s not t he f aul t of t he Cont r act or , an ext ensi on of t he uni t pr i ces f or excavat i on and embankment shal l be made t o cover t he cost of t he r epai r s.

1. 5. 7 Dr ai nage Requi r ement s

The Cont r act or shal l not bl ock or r est r i c t t he f l ow i n a nat ur al dr ai n, exi st i ng cul ver t , di t ch or channel at any t i me wi t hout obt ai ni ng pr i or wr i t t en appr oval . Thi s appr oval shal l not r el i eve t he Cont r act or f r om r esponsi bi l i t y f or any damage caused by hi s oper at i on. The Cont r act or shal l moni t or t he channel f l ow and pr ovi de suf f i c i ent f r ee di schar ge ar eas so t hat condi t i ons ar e not wor sened upst r eam or downst r eam by possi bl e f l oods dur i ng const r uct i on. Sur f ace wat er shal l be di r ect ed away f r om excavat i ons and const r uct i on s i t es so as t o pr event er osi on and under mi ni ng of f oundat i ons. Di ver si on di t ches, di kes, and gr adi ng shal l be pr ovi ded and mai nt ai ned as necessar y dur i ng const r uct i on. Excavat ed s l opes and backf i l l sur f aces shal l be pr ot ect ed t o pr event er osi on and sl oughi ng. Excavat i on shal l be per f or med so t hat t he s i t e and t he ar ea i mmedi at el y sur r oundi ng t he s i t e and af f ect i ng oper at i ons at t he s i t e shal l be cont i nual l y and ef f ect i vel y dr ai ned. I f pr i vat e pr oper t y i s t o be used f or dr ai nage, t he Cont r act or shal l submi t wr i t t en evi dence t hat t he r i ght has been obt ai ned f r om t he pr oper t y owner f or dr ai nage on hi s pr oper t y. Af t er const r uct i on, nat ur al dr ai ns, exi st i ng cul ver t s, di t ches and channel s af f ect ed by const r uct i on shal l be r est or ed t o t hei r pr econst r uct i on condi t i on.

1. 5. 8 Utilities

Movement of const r uct i on machi ner y and equi pment over or near ut i l i t i es ( i ncl udi ng under gr ound and over head ut i l i t i es) dur i ng const r uct i on shal l be at t he Cont r act or ' s r i sk and shal l adher e t o t he r equi r ement s of EM 385- 1- 1 and any ot her appl i cabl e ut i l i t y agency r equi r ement s. Ut i l i t y l i nes damaged dur i ng const r uct i on shal l be i mmedi at el y r epor t ed t o t he Cont r act i ng Of f i cer and r epai r ed at t he Cont r act or ' s expense. Cont r act or shal l obt ai n a cur r ent USA cl ear ance f or excavat i on ar ea of pr oj ect .

1. 5. 9 Pr ot ect i on of Exi st i ng Man- Made Faci l i t i es and Nat ur al Feat ur es

Embankment excavat i on shal l be conduct ed i n such a manner as t o avoi d damage t o t r ees out s i de t he excavat i on ar eas, exi st i ng bui l di ngs, man- made f aci l i t i es and nat ur al f eat ur es, wi t h due r egar d t o t he saf et y of empl oyees and ot her s.

PART 2 PRODUCTS

2. 1 MATERIALS

A l east 30 days pr i or t o del i ver y of any of f s i t e bor r ow mat er i al t o t he s i t e, submi t soi l t est r esul t s f or embankment and backf i l l mat er i al s f or r evi ew and appr oval by t he Cont r act i ng Of f i cer . Cont r act or shal l pr ovi de suf f i c i ent t est i ng t o show t hat pr oposed bor r ow ar eas have an adequat e quant i t y of sat i sf act or y soi l s t o meet t he r equi r ement s f or t he mat er i al s purpose.

SECTI ON 31 00 00 Page 9

Pr oj ect f i l l s shal l be const r uct ed of sui t abl e ear t h mat er i al s as def i ned i n par agr aph 1. 2 DEFI NI TI ONS and as r equi r ed bel ow i n par agr aph 2. 2 TYPES OF FI LL MATERI ALS and obt ai ned f r om pr oj ect excavat i ons or t he bor r ow si t e( s) . The Cont r act or shal l bl end and r euse pr oj ect excavat i ons t o t he maxi mum ext ent possi bl e. Mat er i al s shal l be scr eened of over si ze mat er i al and bl ended as needed t o obt ai n a bl ended mat er i al sui t abl e f or const r uct i on meet i ng t he f i l l r equi r ement s out l i ned i n t hese Speci f i cat i ons. Mat er i al s shal l be scr eened, bl ended and t est ed f or sui t abi l i t y at t he bor r ow si t e, at st agi ng/ st ockpi l e ar eas, or at ot her desi gnat ed ar eas appr oved by t he Cont r act i ng Of f i cer . The t est r esul t s and sui t abi l i t y of f i l l mat er i al shal l be r evi ewed and appr oved by t he Cont r act i ng Of f i cer pr i or t o pl acement . Soi l c l assi f i cat i on t est s shal l be compl et ed f or al l bl ended mat er i al i n accor dance wi t h ASTM D2487.

I f a di sagr eement bet ween t he Cont r act or and Cont r act i ng Of f i cer occur s over t he sui t abi l i t y of f i l l mat er i al s, t he Cont r act or shal l per f or m l abor at or y t est i ng as di r ect ed by t he Cont r act i ng Of f i cer t o demonst r at e compl i ance wi t h t he Speci f i cat i ons at no addi t i onal cost t o t he Gover nment .

Thi s t est i ng shal l compl y wi t h par agr aph 3. 8 FI ELD QUALI TY CONTROL. The f ai l ur e of t he Cont r act or t o per f or m t hi s t est i ng shal l not r el i eve t he Cont r act or f r om t he obl i gat i on t o pr ovi de sui t abl e mat er i al s.

2. 2 TYPES OF FI LL MATERI ALS

2. 2. 1 Levee Fi l l

Levee Fi l l mat er i al shal l be obt ai ned f r om pr oj ect excavat i ons and f r om Cont r act or - pr ovi ded bor r ow si t e( s) and shal l meet t he f ol l owi ng requirements:

GRADATION ASTM TEST PROCEDURE

Si eve Si ze Per cent Passi ng

2-inch 100 ASTM D6913

No. 200 >= 35 ASTM D1140

Li qui d Li mi t r unni ng 10- t est aver age <= 45 wi t h no t est s > 50

ASTM D4318 ( wet pr epar at i on met hod)

Pl ast i c i t y I ndex r unni ng 10- t est aver age >= 12 wi t h no t est s < 8

ASTM D4318( wet pr epar at i on method)

2. 2. 2 Random Fi l l

Random Fi l l mat er i al shal l be obt ai ned f r om pr oj ect excavat i ons and f r om Cont r act or - pr ovi ded bor r ow si t e( s) and shal l meet t he f ol l owi ng requirements:

GRADATION ASTM TEST PROCEDURE

Si eve Si ze Per cent Passi ng

SECTI ON 31 00 00 Page 10

GRADATION ASTM TEST PROCEDURE

2-inch 100 ASTM D6913

No. 200 >= 10 ASTM D1140

Li qui d Li mi t r unni ng 10- t est aver age <= 45 wi t h no t est s > 50

ASTM D4318 ( wet pr epar at i on method)

Pl ast i c i t y I ndex r unni ng 10- t est aver age >=4 wi t h no t est s > 35

ASTM D4318 ( wet pr epar at i on method)

2. 2. 3 Tempor ar y Soi l Cap

Tempor ar y Soi l Cap pl aced over compl et ed s l ur r y cut of f wal l s and shal l be uncompact ed Levee Fi l l .

2. 2. 4 Top Soi l

Mat er i al s f or t op soi l shal l be f r ee of st ones, l umps, and r oot s l ar ger t han 1 i nch and shal l not cont ai n debr i s, her bi c i des, i nsect i c i des or ot her pest i c i des, sal t s, or ot her chemi cal compounds t ox i c t o pl ant gr owt h, aquat i c f l or a and f auna or humans. Mat er i al s gener at ed f r om st r i ppi ng oper at i ons shal l be r eused as Top Soi l .

2. 3 I MPORTED FI LL

I mpor t ed Fi l l must meet t he r equi r ement s of par agr aph CHEMI CAL TESTI NG REQUI REMENTS FOR OFFSI TE SOI LS. Al l t est i ng dat a f or i mpor t ed Levee f i l l must be submi t t ed no l at er t han 30 cal endar days af t er execut i on of t he NTP.

2. 3. 1 Gener al Chemi cal Test i ng Requi r ement s

Of f s i t e soi l s must be chemi cal l y t est ed pr i or t o bei ng consi der ed as f i l l mat er i al onsi t e. Submi t a wor k pl an t o t he Cont r act i ng Of f i cer f or appr oval i n accor dance wi t h par agr aph t i t l ed Bor r ow Si t e Soi l Sampl i ng Wor k Pl an.

Conduct t he sampl i ng act i v i t i es accor di ng t o t he appr oved pl an. The sampl e r esul t s must t hen be compar ed agai nst t he " I mpor t ed Fi l l Chemi cal Scr eeni ng Li mi t s" val ues at t ached t o t hi s speci f i cat i on.

The Cont r act or i s r esponsi bl e f or ensur i ng t hat t he t est i ng i s per f or med and t he r esul t s ar e submi t t ed as par t of t he Bor r ow Ar ea Chemi cal Sui t abi l i t y Repor t . The Bor r ow Ar ea Chemi cal Sui t abi l i t y Repor t must meet t he r equi r ement s out l i ned i n par agr aph t i t l ed Bor r ow Ar ea Chemi cal Sui t abi l i t y Cer t i f i cat i on Repor t . Mat er i al f r om a bor r ow ar ea can be br ought onsi t e onl y af t er t he Cont r act i ng Of f i cer has pr ovi ded appr oval conf i r mi ng t hat t he mat er i al meet s t he soi l scr eeni ng cr i t er i a.

2. 3. 2 Bor r ow Si t e Soi l Sampl i ng Wor k Pl an

Wi t hi n 14 days af t er t he NTP and at l east 30 days pr i or t o t he sampl i ng act i v i t i es at any bor r ow si t e, a pl an i ncl udi ng, but not l i mi t ed t o, t he number of sampl es, sampl e met hods and anal ysi s, sampl e pr ocedur es, l abor at or y who i s per f or mi ng t he anal ysi s, and qual i t y cont r ol and qual i t y assur ances, i s t o be pr ovi ded t o t he Cont r act i ng Of f i cer f or appr oval . The Cont r act or must not col l ect any sampl es at t he bor r ow si t e bef or e t he

SECTI ON 31 00 00 Page 11

Gover nment ' s appr oval . The wor k pl an must be cer t i f i ed by Cal i f or ni a- l i censed pr of essi onal engi neer or geol ogi st .

2. 3. 3 Sampl e Col l ect i on

The soi l sampl es must be col l ect ed f r om evenl y di s t r i but ed l ocat i ons acr oss t he bor r ow si t e so t hat t he anal yt i cal r esul t s ar e as c l ose as possi bl e t o bei ng r epr esent at i ve of each over al l s i t e. Sampl es must be pr eser ved, t r anspor t ed and anal yzed i n accor dance wi t h EPA SW- 846. 3- 3. The di scr et e soi l sampl es f r om t he bor r ow si t e must nor mal l y be composi t ed i nt o one sampl e by t he anal yt i cal l abor at or y f or anal yses; i ndi v i dual s i t e condi t i ons, however , may al so di ct at e t hat t he di scr et e sampl es be anal yzed separ at el y. Sampl e col l ect i on l ocat i ons shoul d be not ed i n t he f i el d, and r ecor ded i n l at i t ude- l ongi t ude and/ or Cal i f or ni a St at e Pl ane coor di nat e formats.

2. 3. 4 Chemi cal Test i ng

Al l bor r ow si t e soi l must under go a sol i ds anal ysi s f or undesi r abl e const i t uent s. The soi l const i t uent concent r at i ons must t hen be compar ed agai nst t he val ues i n t he at t ached " I mpor t ed Fi l l Chemi cal Scr eeni ng Li mi t s" . I n t he event any of t hose l i mi t s ar e exceeded, per f or m t est i ng t o det er mi ne t he pot ent i al sol ubl e concent r at i on of t he const i t uent ( s) . Al l anal ysi s must be per f or med at a f aci l i t y t hat i s ELAP/ NELAP cer t i f i ed f or t he met hods used.

2. 3. 5 Sol uabl e Const i t uent Test i ng

Sol ubl e const i t uent t est i ng must onl y be r equi r ed i n t he event t hat t he const i t uent concent r at i on was above t he Maxi mum Concent r at i on f or Sol i ds Anal ysi s val ue pr ovi ded i n t he " I mpor t ed Fi l l Chemi cal Scr eeni ng Li mi t s" .

The sol ubl e anal yses must be conduct ed usi ng t he Wast e Ext r act i on Test pr ocedur e ( WET) t o gener at e an ext r act ant t hat can be t est ed. Anal ysi s on t he ext r act ant must i ncl ude ONLY t he const i t uent s l i s t ed as havi ng a Sol ubl e Thr eshol d Li mi t Concent r at i on ( STLC) i n t he at t ached " I mpor t ed Fi l l Chemi cal Scr eeni ng Li mi t s" .

2. 3. 6 Pot ent i al Cont ami nant s of Concer n and Scr eeni ng Cr i t er i a

Due t o t he gr owi ng concer n over t he sui t abi l i t y of bor r ow mat er i al , i ncr eased t est i ng r equi r ement s have been i ni t i at ed. The soi l must be t est ed f or t ot al concent r at i ons of scr eeni ng const i t uent s. At t ached t o t hi s speci f i cat i on i s a l i s t of const i t uent s, " I mpor t ed Fi l l Chemi cal Scr eeni ng Li mi t s" t hat ar e t o be i ncl uded i n t he anal ysi s. The t est ed bor r ow si t e soi l i s t o be compar ed agai nst t he Maxi mum Concent r at i on f or Sol i ds Anal ysi s i n mg/ kg. I n t he event t hat t he concent r at i on of a const i t uent i s above t he ' Maxi mum Concent r at i on f or Sol i ds Anal ys i s as i ndi cat ed her eaf t er , t hen t he sol ubl e ext r act i bl e l evel s of t hat const i t uent must be anal yzed. To per f or m t he sol ubl e t est i ng, t he soi l must under go a Wast e Ext r act i on Test ( WET) and t he ext r act ant must be t est ed and compar ed agai nst t he Sol ubl e Thr eshol d Li mi t Concent r at i on ( STLC) val ue( s) . I n t he event t hat t he scr eeni ng l i mi t s ar e exceeded ( or t her e i s no STLC val ue t o compar e agai nst ) , t he Cont r act or can choose t o det er mi ne nat ur al backgr ound concent r at i ons of t he const i t uent ( s) i n t he r egi on of t he pr oj ect s i t e.

Thi s backgr ound l evel can be det er mi ned t hr ough composi t e t est i ng of t he new pl acement s i t e. I f t he backgr ound val ue i s f ound hi gher t han l i mi t s pr ovi ded, t he Cont r act or can use t he i nf or mat i on as j ust i f i cat i on of pot ent i al l y exceedi ng t he l i mi t ( s) . Thi s j ust i f i cat i on must be submi t t ed t o t he Cont r act i ng Of f i cer f or r evi ew and f i nal det er mi nat i on of accept abi l i t y

SECTI ON 31 00 00 Page 12 wi l l be pr ovi ded t o t he Cont r act or .

2. 3. 7 Sampl i ng Cost

Al l cost s associ at ed wi t h t he chemi cal sampl i ng t o be i ncl uded i n t he Bor r ow Ar ea Chemi cal Sui t abi l i t y Cer t i f i cat i on Repor t must be coor di nat ed and pai d f or by t he Cont r act or .

2. 3. 8 Bor r ow Ar ea Chemi cal Sui t abi l i t y Cer t i f i cat i on Repor t

A r epor t det ai l i ng t he chemi cal t est i ng per f or med and conf i r mi ng t he chemi cal sui t abi l i t y of t he bor r ow si t e i s t o be pr ovi ded t o t he Cont r act i ng Of f i cer wi t hi n 45 cal endar days af t er sampl e col l ect i on and at l east 30 days pr i or t o t he f i r st schedul ed dat e f or i mpor t i ng bor r ow mat er i al . The r epor t must i ncl ude, but i s not l i mi t ed t o t he f ol l owi ng: al l chemi cal t est i ng r esul t s wi t h a sect i on descr i bi ng how t he r esul t s compar e t o t he scr eeni ng l i mi t s, a map of sampl e l ocat i ons wi t h GPS coor di nat es, a br i ef summar y of sampl i ng act i v i t i es, sampl e composi t e det ai l s , and any ot her per t i nent i nf or mat i on. Thi s r epor t must be cer t i f i ed by a Cal i f or ni a- l i censed pr of essi onal engi neer or geol ogi st .

The r epor t must i ncl ude al l l abor at or y chemi cal r esul t s and out l i ned i n t hi s speci f i cat i on. The r esul t s must be compar ed agai nst t he val ues pr ovi ded i n t he at t ached, " I mpor t ed Fi l l Chemi cal Scr eeni ng Li mi t s" .

I n addi t i on t o t he chemi cal r esul t compar i son, addi t i onal l ocat i on i nf or mat i on ( e. g. soi l hi st or y, dat e of sampl i ng, et c. ) and commer ci al cont act i nf or mat i on ( e. g. company name, l abor at or y used f or t est i ng, et c. ) must be pr ovi ded i n t he r epor t . Mat er i al f r om a bor r ow ar ea can be br ought onsi t e onl y af t er t he Cont r act i ng Of f i cer has pr ovi ded appr oval t o t he r epor t . I t i s t he Cont r act or ' s r esponsi bi l i t y t o al l ow ampl e t i me f or t he Cont r act i ng Of f i cer t o r evi ew and appr ove t he r epor t and avoi d any pr oj ect delays.

PART 3 EXECUTI ON

3. 1 TOLERANCES

Al l embankment s ( pr i or t o pl acement of aggr egat e sur f aci ng) and backf i l l s shal l be const r uct ed t o t he gr ades, l i nes, and cr oss- sect i ons shown on t he Pl ans and as det er mi ned by Cont r act or ' s Gover nment - r evi ewed pr e- const r uct i on sur veys. The l evee si de s l opes shal l have a t ol er ance of 0 t o pl us 0. 4 f eet f or f i nal dr essi ng ( measur ed per pendi cul ar t o t he s l ope and pr i or t o r espr ead of t op soi l s t r i ppi ngs on l evee sl opes) . The l evee cr own shal l have a t ol er ance of 0 t o pl us 0. 1 f eet above and 0 f eet bel ow.

These t ol er ances wi l l be al l owed pr ovi ded t hat any excess mat er i al i s so di st r i but ed t hat t he cr own and sl opes of t he l evee dr ai n and t hat t her e ar e no abr upt humps or depr essi ons i n any sur f aces.

A t ol er ance of 0. 2 f eet above or bel ow t he pr escr i bed gr ade wi l l be al l owed f or f i ni shed sur f aces out s i de t he l evee embankment pr ovi ded t hat t he sur f ace dr ai ns away f r om t he l evee i n t he di r ect i on i ndi cat ed on t he Pl ans wi t h no abr upt humps or depr essi ons.

3. 2 PREPARATI ON OF FOUNDATI ON, PARTI AL FI LL SURFACES AND EMBANKMENTS

3. 2. 1 Foundat i on Pr epar at i on

Pr i or t o pl acement of l evee f i l l i n any sect i on of t he embankment , t he

SECTI ON 31 00 00 Page 13 f oundat i on of such sect i on shal l be obser ved by t he Cont r act i ng Of f i cer ' s r epr esent at i ve and appr oved by t he Cont r act i ng Of f i cer bef or e t he sur f ace i s l oosened t hor oughl y by scar i f y i ng, pl owi ng, di sci ng or har r owi ng t o a mi ni mum dept h of 6 i nches, and moi st ur e condi t i oned t o t he amount speci f i ed i n Par agr aph 3. 5 MOI STURE CONTROL f or t he appr opr i at e t ype of mat er i al .

Af t er r emoval of r oot s or ot her debr i s t ur ned up i n t he pr ocess of l ooseni ng, t he ent i r e sur f ace of t he f oundat i on ar ea shal l be compact ed t o t he mi ni mum speci f i ed per cent age of t he maxi mum dr y densi t y. I mmedi at el y pr i or t o pl acement of compact ed f i l l on or agai nst t he sur f aces of any par t i al l y f i l l ed sect i on, al l sof t or l oose mat er i al , al l mat er i al cont ai ni ng cr acks or gul l i es, and al l mat er i al t hat does not conf or m wi t h t he speci f i ed embankment mat er i al s shal l be r emoved. The r emai ni ng sur f ace of t he par t i al l y f i l l ed sect i on shal l be l oosened by scar i f y i ng, pl owi ng, di sci ng or har r owi ng t o a mi ni mum dept h of 6 i nches, and t he moi st ur e cont ent shal l be adj ust ed as speci f i ed i n Par agr aph 3. 5 MOI STURE CONTROL f or t he appr opr i at e t ype of mat er i al . The sur f ace of t he par t i al l y f i l l ed sect i on upon whi ch f i l l i s t o be pl aced, shal l t hen be compact ed as her ei n speci f i ed f or t he appr opr i at e t ype of f i l l . No separ at e payment wi l l be made f or l ooseni ng and r ol l i ng t he f oundat i on ar ea or t he sur f aces of par t i al l y f i l l ed sect i ons, but t he ent i r e cost t her eof shal l be i nc l uded i n t he appl i cabl e cont r act pr i ce.

Al l sur f aces shal l be f i r m and unyi el di ng. No r ut t i ng or pumpi ng shal l be al l owed on subgr ade t o r ecei ve f i l l . I f t he Cont r act i ng Of f i cer det er mi nes t he subgr ade t o be unsui t abl e, t he mat er i al wi l l be r ej ect ed and t he Cont r act or shal l r ewor k t he ar ea t o meet t he r equi r ement s of t hese Speci f i cat i ons at no addi t i onal cost t o t he Gover nment .

3. 2. 2 Benching

Benchi ng i nt o t he exi st i ng l evee embankment or exi st i ng s i de s l opes i s r equi r ed i n or der t o pl ace and compact t he mat er i al i n hor i zont al l ayer s.

The ver t i cal f ace cut i nt o t he exi st i ng sur f ace r esul t i ng f r om t he benchi ng oper at i on shal l be as shown on t he benchi ng det ai l s on t he Pl ans.

3. 2. 3 Pr epar at i on of Cut of f Wal l Wor ki ng Sur f ace

The l evee wor ki ng sur f ace shal l be c l eaned of excess cut of f wal l mat er i al and debr i s pr i or t o pl acement of embankment f i l l . Bent oni t e af f ect ed soi l s wi l l not be al l owed t o r emai n on t he wor ki ng sur f ace wi t hout adequat e pr ocessi ng t o meet t he f i l l and moi st ur e cont ent r equi r ement s of t hese Specifications.

3. 2. 4 Shor i ng and Sheet i ng

I n addi t i on t o EM 385- 1- 1 and ot her r equi r ement s set f or t h i n t hi s cont r act , submi t a Shor i ng and Sheet i ng Pl an t hat i ncl udes dr awi ngs and cal cul at i ons, cer t i f i ed by a r egi st er ed c i v i l engi neer aut hor i zed t o pr act i ce i n t he St at e of Cal i f or ni a, and descr i bes t he met hods f or shor i ng and sheet i ng of excavat i ons i f r equi r ed. Dr awi ngs shal l i ncl ude mat er i al s i zes and t ypes, ar r angement of member s, and t he sequence and met hod of i nst al l at i on and r emoval . Cal cul at i ons shal l i ncl ude dat a and r ef er ences used and i ncl ude pr ovi s i ons i n t he shor i ng and sheet i ng pl an t hat wi l l accompl i sh t he f ol l owi ng:

a. Pr event under mi ni ng of embankment s, r oads, or st r uct ur es.

b. Pr event s l i ppage or movement i n banks or s l opes adj acent t o t he excavation.

SECTI ON 31 00 00 Page 14

c. Pr event s l i ppage or movement i n banks or s l opes dur i ng ut i l i t y replacement.

3. 2. 5 Dewatering

Dewat er i ng shal l be per f or med as necessar y t o i mpl ement wor k i n t he dr y.

Gr oundwat er f l owi ng t owar d or i nt o excavat i ons shal l be cont r ol l ed t o pr event s l oughi ng of excavat i on s l opes and wal l s, boi l s , upl i f t and heave i n t he excavat i on and t o el i mi nat e i nt er f er ence wi t h or der l y pr ogr ess of const r uct i on. Fr ench dr ai ns, sumps, di t ches or t r enches wi l l not be per mi t t ed wi t hi n 3 f eet of t he f oundat i on of any st r uct ur e, except wi t h speci f i c wr i t t en di r ect i on, and af t er speci f i c cont r act ual pr ovi s i ons f or r est or at i on of t he f oundat i on ar ea have been made. Cont r ol measur es shal l be t aken by t he t i me t he excavat i on r eaches t he wat er l evel i n or der t o mai nt ai n t he i nt egr i t y of t he i n s i t u mat er i al .

The cont r act or shal l l ower gr ound wat er t abl es wi t hi n excavat i ons t o a mi ni mum of 3 f eet bel ow excavat i on l i mi t s or as ot her wi se r equi r ed t o est abl i sh a f i r m, st abl e f oundat i on.

The Cont r act or shal l oper at e t he dewat er i ng syst em cont i nuousl y unt i l const r uct i on wor k bel ow exi st i ng wat er l evel s i s compl et e.

3. 2. 6 Levee Excavat i on

Levee excavat i on shal l consi st of t he r emoval of t he exi st i ng l evee embankment t o t he l i nes and gr ades shown on t he Pl ans t o const r uct cut of f wal l wor ki ng sur f ace and st ar t er t r ench. Cr own sur f aci ng and r oadway r emoval shal l be per f or med i n accor dance wi t h t he Pl ans and t hese Specifications.

Mat er i al excavat ed f r om t he exi st i ng l evee dur i ng t hese oper at i ons may be t empor ar i l y st ockpi l ed wi t hi n t he al l owabl e wor ki ng l i mi t s shown on t he Pl ans. I f adequat e space i s not avai l abl e, excavat ed mat er i al shal l be haul ed t o st agi ng ar eas shown on t he Pl ans f or st ockpi l i ng and pr ocessi ng.

Si decast i ng of mat er i al shal l be al l owed on t he l andsi de s l ope onl y wi t hi n t he const r uct i on l i mi t s; no s i decast i ng shal l be al l owed on t he wat er si de slope.

Mat er i al s obt ai ned f r om pr oj ect excavat i ons t hat do not di r ect l y meet t he r equi r ement s f or r andom f i l l or l evee f i l l , but can be bl ended t o meet t he r equi r ement s bel ow, shal l not be wast ed. Thi s mat er i al shal l be bl ended i n appr oved st agi ng/ st ockpi l e ar eas i n suf f i c i ent quant i t y t o meet t he r equi r ement s and shal l be used as shown on t he Pl ans. Mat er i al s t hat cannot be bl ended t o meet t hese r equi r ement s as out l i ned under par agr aph 2. 2 TYPES OF FI LL MATERI ALS, shal l become t he pr oper t y of t he Cont r act or and shal l be di sposed of of f - s i t e i n accor dance wi t h appl i cabl e f eder al , st at e, and l ocal r egul at i ons.

I n t he event t he wat er sur f ace el evat i on i s f or ecast ed by t he St at e- Feder al Fl ood For ecast Cent er t o i ncr ease si gni f i cant l y f or any r eason, t he Gover nment r eser ves t he r i ght t o r equi r e t he Cont r act or t o st op excavat i on and t o begi n cont i nuous oper at i ons t o compl et e al l par t i al l y compl et ed sect i on( s) of t he l evee embankment . At l east 15 days pr i or t o any l evee excavat i on, t he Cont r act or shal l submi t a Fl ood St age Cont i ngency Pl an out l i ni ng t he cont i ngency oper at i ons i n t he event t hat r i ver el evat i ons adj acent t o t he pr oj ect s i t e r each t he el evat i on of t he l andsi de t oe ( El evat i on 32 t o 40 f t ) .

SECTI ON 31 00 00 Page 15

The cont i ngency pl an shal l i ncl ude t he pr oposed measur es t o pr ot ect t he l andsi de ar eas whi ch have a r educed l evel of pr ot ect i on due t o const r uct i on act i v i t i es. The pl an shal l i ncl ude r i ver st age moni t or i ng, r i ver st age at whi ch t he pl an wi l l be act i vat ed, mat er i al and equi pment t o be used i n per f or mance of t he cont i ngency pl an, and t he exi st i ng l ocat i on, t ype and quant i t y of t he st ockpi l ed emer gency mat er i al . The pl an shal l al so i ncl ude t he l engt h of l evee t o be degr aded at any one t i me, wher e st ockpi l ed mat er i al s wi l l be st or ed, t he ant i c i pat ed t i me needed t o r econst r uct t he l evee, and t he met hod f or moni t or i ng r i ver el evat i ons. The Cont r act or shal l keep any l evee degr ade mat er i al on t he pr oj ect s i t e f or t he dur at i on of t he const r uct i on per i od, pr ot ect ed f r om i ncl ement weat her , f or use as emer gency backf i l l as necessar y.

3. 2. 7 Over-Excavation

Over - excavat i on wi t hi n t he l i mi t s of t he f oundat i ons of l evees and st r uct ur es shal l be backf i l l ed t o gr ade wi t h t he same mat er i al t ype t hat i s t o be pl aced i mmedi at el y above t he excavat i on, keyed i nt o adj acent gr ound, pl aced i n l oose l i f t s not exceedi ng ei ght i nches and compact ed i n accor dance wi t h t hi s Speci f i cat i on. Keyi ng of f i l l shal l be i n accor dance wi t h t he det ai l s shown on t he Pl ans.

3. 2. 8 Sl opes and Sur char ges

Tempor ar y excavat i on s l opes shal l not be st eeper t han 2 hor i zont al t o 1 ver t i cal , unl ess shown ot her wi se on t he Pl ans.

No t empor ar y, per manent , or const r uct i on s l ope shal l be sur char ged wi t h excavat ed or st ockpi l ed mat er i al or wi t h heavy const r uct i on equi pment . The t oe of st ockpi l ed mat er i al or r out i ng of const r uct i on equi pment shal l be mai nt ai ned a mi ni mum di st ance back f r om t he t op of t he f i ni shed excavat i on equal t o t he dept h of t he excavat i on. Any s l i de or ot her adver se condi t i ons caused by f ai l ur e of t he Cont r act or t o mai nt ai n t hese condi t i ons shal l be consi der ed t he r esponsi bi l i t y of t he Cont r act or and r emedi al measur es shal l be at t he Cont r act or ' s expense.

3. 3 PLACEMENT AND SPREADI NG

3. 3. 1 General

No f i l l shal l be pl aced unt i l such ar eas have been i nspect ed and appr oved by t he Cont r act i ng Of f i cer .

3. 3. 1. 1 Gr adat i on and Di st r i but i on

The gr adat i on and di st r i but i on of mat er i al s shal l be such t hat t he l evee embankment zones wi l l be f r ee f r om l enses, pocket s, st r eaks, and l ayer s of mat er i al di f f er i ng subst ant i al l y i n t ext ur e or gr adat i on f r om sur r oundi ng mat er i al of t he same t ype. I f l enses, pocket s, or l ayer s of mat er i al s di f f er i ng subst ant i al l y i n t ext ur e or gr adat i on f r om sur r oundi ng mat er i al occur i n t he spr ead mat er i al , t he l ayer shal l be r emoved, bl ended, and t est ed f or sui t abi l i t y pr i or t o r epl acement . Scr eeni ng and bl endi ng of mat er i al s shal l occur i n appr oved st agi ng/ st ockpi l e ar eas, and shal l be per f or med under t he obser vat i on of t he Cont r act i ng Of f i cer . Dur i ng t he pl acement and spr eadi ng pr ocess, t he Cont r act or shal l mai nt ai n at al l t i mes a f or ce of wor ker s and appr opr i at e equi pment adequat e t o r emove over si zed par t i c l es, over s i zed r oot s, debr i s, r ubbl e, t r ash, del et er i ous i t ems, concent r at i ons of or gani c mat er i al , over si zed st ones, and al l over s i zed

SECTI ON 31 00 00 Page 16 r ock f r agment s f r om al l f i l l mat er i al s. The maxi mum al l owed par t i c l e s i ze f or t he appr opr i at e f i l l mat er i al t ype shal l be as i ndi cat ed i n Par agr aph

2. 2 TYPES OF FI LL MATERI ALS.

3. 3. 1. 2 Foundat i ons and Par t i al Embankment Fi l l s

The f oundat i ons and al l par t i al embankment s r ecei v i ng f i l l shal l be kept t hor oughl y dr ai ned. Pl acement oper at i ons wi l l be such as t o avoi d mi xi ng of mat er i al s f r om adj acent sect i ons as much as…