Demobilization

Remediation aetivities ineluded site mobilization (i.e., installation of trailers, utilities, and equipment elearing and grubbing grading roads and eonstruetion of deeontamination faeilities, drainage pump stations, and a water treatment system), soil exeavation, thermal proeessing of 7,700 eubie yards of soil, baekfilling and regrading the exeavated area, and site demobilization. 

Mobilization and demobilization costs of the system were estimated to be under 50,000 in 1995 (D10021G, p. 2). 

The developer notes that mobilization and demobilization costs are affected by both the location of the site and the type and quantity of waste. Mobilization and demobilization costs range from 300 to 10,500 for most global destinations (D151100, p. 7). 

Facility modification, repair, and replacement and site demobilization (D11020J, p. 34)... 

A pilot-scale demonstration remediating harbor sediment was conducted 1 year before the SITE demonstration. Based on the pilot-scale demonstration, the processing costs for a fuU-scale, 110-ton/day unit were projected to be 230/ton (September 1992 U.S. dollars). It is assumed that the unit will be down approximately 30% of the time for maintenance and design improvements in the first year of operation. Based on this system availability, 28,105 tons can be processed in one year. This cost included estimates for variable costs, fixed costs, and deprecia-tion/insurance. Variable costs include diesel fuel for a mobile generator, hydrogen, and caustic. Fixed costs include labor diesel fuel for pumps, heaters, process equipment, and instrumentation propane, water and sewer and parts and supplies. Depreciation/insurance costs include capital cost depreciated over a 3-year period, general insurance costs, and pollution liabihty insurance. This analysis does not include costs for setup and demobilization (D128007, pp. 5.12-5.14). 

The cost of remediating 15,300 of soil using the ENSR International Group soil cleaning process was estimated to be between 164/m and 327/m in 1989. This estimate was based on operation of a mobile system with net daily throughput rates of 96 to 191 m /day, and an onstream factor of 85%. These estimates included capital and operating expenses, waste disposal, mobilization, and demobilization (D145281, p. 5.4). 

The vendor states that BIO-INTEGRATION is not a one-size-fits-all protocol (site-specific treatability studies are required to establish the necessary treatment). Thus, treatment cost estimates are highly variable, ranging from 20 to 75 per ton of contaminated soil treated. These estimates include the cost of installation and demobilization. The vendor states that the amount and type of contaminant has little to do with costing. Factors listed as having the greatest impact on cost are ... 

Franl ort, Indiana. This project involved full-scale remediation of an leaking underground storage tank (LUST) site. The site contained 1238 tons of soil contaminated with total petroleum hydrocarbons (TPH). The area of contaminated soil was 27 by 55 ft across and 15 ft deep. TPH concentrations were reduced from 1200 parts per million (ppm) to nondetectable levels in 82 days. The cost of the project was 13,600. This cost included mobilization, demobilization, and in situ BIO-INTEGRATION treatment (D17796C, p. 1). This breaks down to approximately ll/ton of soil treated. 

Gulf Coast Petroleum Refinery. This project involved the cleannp of a crude oil spill in a wetlands area. Costs were estimated to be 2/ft of area treated. Treatment included emergency response mobilization, demobilization, sampling, laboratory analyses, and treatment (D17796C, p. 4). 

According to the vendor, costs for sediment removal, dewatering, water treatment, and segregation by particle size are approximately 250/m or less. For removal only, costs are 100/m or less. These estimated costs do not include mobilization and demobilization and/or supplying temporary enclosures (used in pretreatment) if none are available at the site (personal communication Roger Carr, Eriksson Sediment Systems, Inc., May, 1997). 

The estimated price for the FE ACTIVE system is 10 to 100/yd of waste material. Mobilization, demobilization, and pilot testing of the system will cost approximately 10,000 per site. These estimates do not always include all indirect costs associated with treatment such as excavation, permits, and treatment of residuals. The cost of well installation is not included in these estimates. If wells are not present at the site, they must be installed at an additional cost. Factors that have a significant effect on unit price include the following ... 

In 1994, average costs for treatabdity studies were estimated by the vendor to be 40,000 to 80,000, of which 15,000 to 50,000 is for analytical chemistry services. Equipment fees and mobilization costs were estimated at 200,000 to 300,000 combined (D10857G, p. 4-36). Also in 1994, costs for ISV processing were estimated to average 350 to 450 per ton for hazardous wastes, and 400 to 550 per ton for radioactive wastes, plus the mobidzation/demobilization cost (D13589R, p. 2). 

Shipping, handling, and transporting residuals Analytical testing Equipment repair and replacement Site demobilization... 

Based 2433 per day mobiUzation/demobilization costs and 60-day treatment period. 

At the Sand Creek Superfund site, project costs were 2.14 million. This value does not include the cost for demobilization activities. It was determined that 81,231 of the total cost of the project was spent on mobilization and other pretreatment activities. Activities relating to treatment accounted for 2,058,564 of the total project cost. This corresponds to a treatment cost of 39 to 65/yd of soil treated and 11.70/lb of VOCs removed (D22777U, p. 23). 

Hopper-to-hopper treatment costs (including equipment mobilization and demobilization) range from 250 to 350 per ton ( 276 to 386 per metric ton) (1991 dollars) of waste treated for projects with waste quantities in excess of 10,000 tons (9100 metric tons) (D12683K, p. 218). 

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