Laserfiche WebLink
GEOMATRIX <br /> TABLE 2 <br /> ALTERNATIVE 3 <br /> ORC (1 Change Out per Year) <br /> PRELIMINARY COST ESTIMATE <br /> Corral Hollow and Grant Line Roads Site, Tracy, California <br /> Assumptions: <br /> 1. Groundwater monitoring and reporting are conducted on 5 onsite monitoring wells(MW-5,-6,-7,-8,and-12)once per year. <br /> 2. 10'of ORC socks ea.are placed in 4 wells:MW-6,-7,-8,and-12.The ORC socks are assumed to be replaced once a year. <br /> 3. Net present value(NPV)estimated based on 5%annual adjustment rate. <br /> Notes: <br /> The following costs were estimated based on a conceptual design of the remedial action and readily available cost information on labor <br /> and material typical for similar projects. The actual costs for this project may vary depending on the final design,contract bids,agencies' <br /> requirements,and/or the availability of equipment,materials,and/or contractor at the time of final remedial action design,construction, <br /> and/or implementation. <br /> Task <br /> Activity Quantity Unit Unit$ Cost$ Subtotal$ <br /> MONITORING <br /> Annual Groundwater Monitoring 8,474 <br /> field sampling 15 hr 65 975 <br /> sampling equipment 1 day 550 550 <br /> laboratory analysis:BTEX and TPHg(8021) 6 ea 79 474 <br /> laboratory analysis:PAHs(8270C SIM) 5 ea 215 1,075 <br /> laboratory analysis:TPHd w/silica gel cleanup(8015M,3630) 5 ea 76 380 <br /> laboratory analysis:TPHd(8015M) 5 ea 76 380 <br /> laboratory analysis:nitrate&sulfate(300) 5 ea 50 250 <br /> laboratory analysis: alkalinity(310.1) 5 ea 22 110 <br /> laboratory analysis:dissolved iron(6010) 5 ea 22 110 <br /> ORC changeout: 1 time/yr(40 2"-dia.socks ea.) 40 ea 30 1,200 <br /> ORC changeout:additional 2 trips/yr 0 ea 700 0 <br /> misc.(copy,fax,mail,etc.) 1 ea 200 200 <br /> data compilation,evaluation,and annual reporting 20 hr 100 2,000 <br /> 10%project management cost 0.1 7,704 770 <br /> NPV-MONITORED NATURAL ATTENUATION(15 YEARS): $ 87,961 <br /> SITE CLOSURE <br /> Closure Activities 28,350 <br /> County well abandonment permit 1 lump sum 1,000 1,000 <br /> abandon monitoring wells 1 lump sum 7,000 7,000 <br /> field work oversight and coordination 30 hr 100 3,000 <br /> Site closure logistics 1 lump sum 10,000 10,000 <br /> 10%project management cost 0.1 21,000 2,100 <br /> 25%contingency cost 0.25 21,000 5,250 <br /> NPV-SITE CLOSURE(AT YEAR 15): $ 13,637 <br /> TOTAL: $ 101,598 <br /> is\doc_safe\2000s\c2463\2463 orc pilot.xls <br />