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GUUKIHUUSC ,~UHKt I
<br />RE-CONSTRUCTION REMEDIAL AND CONSTRUCTION OVERSIGHT AC~'IVITIE
<br />DRAFT COST ESTIMATE
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<br />General Assumptlons: j
<br />Sfte remediaUon acUviUes vnll be conducted prior to construction excavation ~
<br />Remedfal acUvities on the fortner Chevron parcel are not included ~
<br />~ 1-level subsurface garage wiil be consUucted
<br />Sal will be excavated to appro~dmately 12 feet bgs for parking garage; therefore, remedial soil exqvations~
<br />will extend to a minimum of 12 feet bgs
<br />Remedial excavations will take appro~amately 4 weeks
<br />Units rates for contractors are assumed and will be replaced by bid rates ~
<br />TASK I DECOMMISSION USTs
<br />Assumptions:
<br />The foilowing known UST wiil be decommissioned by removal: Liu Property
<br />The fdlowing suspect USTs will be investigated and decommissioned by removal: Senator/Jr. Bootery
<br />(muttiple USTs?), Harbison Station, Senator Baler, Beri Building (muttipie USTs?), St. Paul Rectory
<br />Five 1,OOO~aI and four 2,000-gal will be removed
<br />50 cubic yards/UST of petroleum-contaminated soil will be excavated and disposed off-site
<br />4 HCIDs with quantificatioNUST laboratory anatyzed
<br />Reporting inGuded in Task VI
<br />Project Manager $88 40 53,520 ~$3,520
<br />Geolopist/Enpineer $60 120 57,200 ; $7,200
<br />UST removal 9 ~ $13,000 i 513,000
<br />UST investigation $1,250 3 53,750 I~ 33,750
<br />PCs excavation (cubic yards) S8.25 450 53,713 '$3,713
<br />Sal transportation 521.30 450 59,585 ', $9,585
<br />Soil disposal ~31.50 450 $14,175 ~ 514,175
<br />HCID/quantification analyses 3165 36 $5,940 ~ $5,940
<br />TASK II: SOIL REMOVAL ;
<br />~ SaIA '~will~pvated to aPpro~3mately 12 feet bgs for parfdnp garage; therefore, remedial sal excavations~
<br />wiH exkend to a minknum of 12 feet bDs j
<br />Five ar~s of Iv~own or wspected PCs wiil be excavated: Se~ator bt, Beri lot, Beri UST, Senator lot sum~,
<br />and Goldberp bwldinp sump I
<br />5 HCIDs wrth qt~tificatioNewcavat(on laboratory analyzed '
<br />Soil sampies from 4 excavation walls and floor + 1 stxi~'le (~sposa~ analyzed !
<br />S~xnp excavations wal include additlonal analyses far metals, solvents, PCBs (waste components) '
<br />Darratering costa induded in Task IV ~
<br />Repo~ting included'm Task VI .,.
<br />1.4 tons/CY for soil '~
<br />ect Manager S88 40 53,520 i~ 53,520
<br />~~r,~~r,~r aso , zo a~,2oo i s~,2oo
<br />D/quantification analyses 5165 25 54,125 ~ 54,125
<br />~e components 3424 2 5848 ~ 5848
<br />overburden excavation (cubic yards) 56 720 54,320 ',~ 54,320
<br />~ excavation (cubic yards) 58.25 1480 572,210 ', a12,210
<br />U'ansportation 521.30 1480 a31,524 i 531,524
<br />disposal 531.50 1480 546.620 , 546~620
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<br />Century West Enflincerinp Page 1 24Ju1-97
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