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' ALTERNATIVE 6 GEOMATRIX
<br /> COMPLETE EXCAVATION FOR ONSITE LOW-TEMPERATURE THERMAL DESORPTION
<br /> PRELIMINARY COST ESTIMATE
<br /> Former ConttGroup Grain Elevator Page 2 of 3
<br /> 1805 Harbor Street
<br /> Stockton, California
<br /> TASK
<br /> ACTIVITY QUANTITY UNIT UNIT S COST S SUBTOTAL$
<br /> ' DEWATERING and TREATMENT SYSTEM(cont'd)
<br /> Other muc. 110,000
<br /> treatment system installation,startup,operations 60 day 1,500 90,000
<br /> ' laboratory analysis of discharge water samples 8 ea 500 4,000
<br /> system decommissioning 1 lump sum 10,000 10,000
<br /> spent GAC pickup and disposal 1 lump sum 6,000 6,000
<br /> DEWATERING and TREATMENT SYSTEM SUBTOTAL $ 191,000
<br /> TASK
<br /> ' ACTIVITY QUANTITY UNIT UNIT S COST$ SUBTOTAL$
<br /> DEMOLITION
<br /> Held activities 116,000
<br /> ' fence 2 lump sum 4,000 8,000
<br /> decommison existing monitoring wells 4 lump sum 5,000 20,000
<br /> railroad demolition 1 lump sum 50,000 50,000
<br /> remove 4,500412 asphalt&recycle I lump sum 20,000 20,000
<br /> lie remove overhead powerlme and pole 1 lump sum 8,000 8,000
<br /> remove concrete slab&recycle 1 lump sum 10,000 10,000
<br /> DEMOLITION SUBTOTAL $ 116,000
<br /> EXCA VA TION and BACKFILL
<br /> pre-field activities 45,000
<br /> ' stormwater controls installed 1 lump sum 10,000 10,000
<br /> utility survey&potholing 1 lump sum 5,000 5,000
<br /> design shoring I lump sum 15,000 15,000
<br /> implement utility protection plan I lump sum 15,000 15,000
<br /> ' excavation 2,851,000
<br /> mob/demob I lump sum 15,000 15,000
<br /> install&remove shoring I lump sum 300,000 300,000
<br /> ' excavate 4,200 cy overburden soil and stockpile 4200 cubic yard 12 50,400
<br /> excavate 8,400 cy affected soil 8400 cubic yard 15 126,000
<br /> onsite treatment of affected soil using LTTD 14200 ton 150 2,130,000
<br /> ' treated soil sampling(20,000 cy)sampling(I sample 1 100 cy) 134 ea 200 26,800
<br /> sample and test stockpiled overburden soil 42 ea 250 10,500
<br /> move,place,and compact treated soil 14200 ton 10 142,000
<br /> move,place,and compact overburden soil 4200 cubic yard 9 37,800
<br /> import baserock purchase,transport,place,compact 500 ton 25 12,500
<br /> Other mesa 65,000
<br /> field work oversight and coordination 60 days 1,000 60,000
<br /> mist field equipment 1 lump sum 5,000 5,000
<br /> EXCA VA TION and BA CKFILL SUB To TAL $ 2,961,000
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