| Site Name/ Contact |
Technology/ Vendor |
Media Treated | Contaminants Treated | Operating Parameters | Materials Handling | Residuals Management | Comments |
|---|---|---|---|---|---|---|---|
| DOI
Demo Bureau of Mines Tuscaloosa Research Center, AL C.W. Smith |
Well Point Containment | Ground water | Lead, iron | The Bureau of Mines demonstration included a 235-well point system and a monitoring well network | Well point system in conjunction with a french drain to contain impoundment leakage | Monitoring of ground water required after well point pumping begins | Well points are used to alter water tables, remove leachate for treatment, or control ground-water movement |
| Commencement Bay,
South Tacoma Channel, Tacoma, WA Kevin Rochlin Remedial Project Manager U.S. EPA Region 10 Seattle, Washington |
Ground Water Pumping (Pump and Treat) | Ground water | VOCs: DCE,
PCA, PCE, and TCE 20% of contamination is in the top 32.5 ft. 80% is in the 32.5 to 40 ft. depth interval. |
A pumping rate of 200 gpm is estimated to induce a 0.75 foot drawdown at a radius of influ- ence of 200 ft. A pumping rate of 500 gpm is estimated to induce a 1.9 foot drawdown at the same radius. | As of Feb.23, 1994,281,700,000 gallons of ground- water have been pumped and an estimated 10,361 pounds of VOCs have been treated and removed by the GAC treatment system. | ||
| DOE's Lawerence Livermore Nat'l Lab (LLNL), Livermore, CA | Ground Water Pumping (Pump and Treat) | Ground water | VOCs, BTEX,
Chromium, Lead, and Tritium. VOCs underlie approximately 85% of the LLNL site over an area of about 1.4 square miles. The VOC plume thickness varies between 30 and 100 ft and rarely exceeds 200 ft in depth. The total volume of undiluted VOCs has been estimated at less than 200 gallons. |
Treatment Facility G scheduled for initial operation in 1996 will likely be installed as 2 separate facilities to treat VOC contaminated ground water at a rate of 30 GPM by air stripping followed by GAC treatment of offgases. The Trailer 5475 facility scheduled for detailed design in 1997 or 1999 will treat ground water to remove VOCs (primarily TCE) in a closed loop UV/H2O2 , air stripping and GAC facility | The LLNL
ground water treatment program is in the early stages of
implementation. Treatment facilities A,B,C and F have operated with minimal extraction wells in a test mode since their startup. Treatment facility D (TFD) began operation in October 1994. Little detailed or meaningful performance information is available |
||
| Operable Unit (OU) D, McClellan Air Force Base, CA | Ground Water Pumping (Pump and Treat) | Ground water | TCE, PCE, DCE. Contaminants in ground water have been found to exist in 3 separate phases at McClellan: sorbed to the soil matrix, solublized in porewater, or as free product. Contamination is additionally present dissolved in soil gas in the vadose zone. | The GWTP operates 24 hours/day, 365 days/year. At least one operator is on duty at all times. The plant has full spare backup pumps and blowers and backup GAC and heat exchange capacity at low flow rates. Control loops are configured to provide automatic shutdown during process upsets. | During 1993 the GWTP: Treated over 73 million gallons of ground water. Was online 98% of all available time. Consumed 2.2 million cubic ft of natural gas, 200,000 kwhrs of electricity, approximately 650 gallons of sodium hypochlorite, and over 50 gallons of sodium hydroxide | Over 44,000 lbs of VOCs have been removed since startup. Influent VOC concentra- tions were approxi- mately 60 ppm in 1987 and have decreased to approximately 4 ppm. | |
| OU B/C, McClellan Air Force Base, CA | Ground Water Pumping (Pump and Treat) | Ground water | TCE, PCE,
DCE. Contaminants exist in 3 separate phases at
McClellan: sorbed to the soil matrix, solublized in porewater, or as free product. Contamination is additionally present dissolved in soil gas in the vadose zone. |
The plant has full spare backup pumps and blowers and backup GAC and heat exchange capacity at low flow rates. GWTP II, which operates within OU B, is a simple arrange- ment of two ground water extraction wells pumping approxi- mately 2 GPM each through a double-contained pipeline equipped with a leak detec- tion system to a holding tank. The ground water is then pumped through a bag filter and treated by two GAC adsorption units in series. | Landfill,
Disposal Pit, UST's During 1993 the GWTP: Treated over 73 million gallons of ground water. Consumed 2.2 million ft3 of natural gas, 200,000 kwhrs of electricity, approximately 650 gallons of sodium hypochlorite, and over 50 gallons of sodium hydroxide. GWTP II had processed a total of 7.9 million gallons of ground water as of January 1994 |
||
| Twin
City Army Ammunition Plant, New Brighton, MN Remedial Project Manager |
Full-scale of pump and treat | Ground water | Chlorinated Aliphatics - Contaminants of greatest concern in the ground water are: 1,1-DCE, 1,1- DCA, 1,2-DCE, chloroform, 1,1,1-TCA, TCE, and PCE. TCE concentration greater than 10,000 ppb in ground water. 99.9% removal of VOCs in influence | Groundwater Extraction followed by Air Stripping - 12 boundary recovery wells and 5 source area recovery wells - Air stripping plant designed to treat 2,900 gal/min; 4 towers - 2 : 7 feet diameter and 2 : 8 feet diameter; all 36 feet tall with propylene packing | Total Capital Cost: $8,034,454; Total Annual Operating Cost: $588,599. $0.12 per 1,000 gallons treated. | ||
| Site Name/ Contact |
Technology/ Vendor |
Media Treated | Contaminants Treated | Operating Parameters | Materials Handling | Residuals Management | Comments |
| Langley
Air Force Base, VA Vern Bartels, Remedial Project Manager Langley AFB |
Ground Water Pumping (Pump and Treat) | Ground water | Benzene, Toluene, Ethylbenzene, Xylenes (BTEX) and Total Petroleum Hydrocarbons (TPH) - Primary constituents of JP-4 fuel are alkanes, cycloalkanes, alkylbenzenes, indans/tetralins, naphthalenes - Total Recoverable Petroleum Hydrocarbons - 25 to 4,100 ppb in ground water; >100 ppm in soil | Groundwater Extraction using a Vacuum Assisted Well Point Extraction System and Aboveground Air Stripping - Extraction - 16 vacuum extraction wells connected by a header pipe to a central vacuum system; wells extend to approximately 14 ft. below ground surface - Extraction network has an average flow rate of 32 gpm (2 gpm per well); vacuum pump provides 24-25 in of Hg Separation - initial oil/water separation occurs in a vacuum decanter followed by a high efficiency oil/water separator; oil phase is sent to a storage tank | Total Capital Costs - $569,739 (1992) (including demolition and excavation, system installation, startup, mobilization and site preparation) - Annual Operating Costs - $216,561 (1993), $143,047 (1994) (including labor, materials, and equipment) - An estimated total cost for completing the cleanup is not available at this time | ||
| DOE
Demo, Kansas City Plant, MO Environmental Restoration G.P. Keary, Environmental Restoration Program Manager |
Ground Water Pumping (Pump and Treat) | Ground water | Chlorinated Aliphatics;
includes Tetrachloroethene (PCE), Trichloroethene (TCE), 1,2-Dichloroethenes (1,2-DCEs), and Vinyl Chloride PCBs, Petroleum Hydrocarbons, and Metals - TCE concentrations of > 10,000 ~g/L in ground water |
Groundwater Extraction with Advanced Oxidation Processes (AOPs) - 14 extraction wells and one trench; screened intervals of wells ranged from 27 feet to approximately 47 feet below ground surface; flow rates ranged from 0.9 to 5 gallons per minute (gpm) based on a design flow rate of 2 gpm - Interceptor trench of 250 ft. in length; ranged in depth from about 22 ft. to 31 ft. - Treatment system - acidification to solubilize inorganic metals, bag filtration, UV/peroxide oxidation, and neutralization | Industrial site. Total Capital Costs: $1,383,400 (including
equipment, site preparation, construction/ engineering,
startup) - Annual Operating Costs: $355,200 (including
mainte- nance, project management, laboratory analysis,
supplies). An estimated |
||
| DOE DEMO
Savannah River Site, Aiken, S.C. G.E.
Turner, DOE Savannah River Oper. Office Environmental
Restoration Div. Aiken, SC |
Ground Water Pumping (Pump and Treat) | Ground water | Chlorinated
Aliphatics - Trichloroethene (TCE), Tetrachloroethene
(PCE), and 1,1,1- Trichloroethane (TCA) - Concentrations
of volatile organic compounds (VOCs) in ground water reported as high as 500 ppm - Ground water TCE concentrations over 48 ppm - Ground water contains 260,000-450,000 pounds of dissolved organic solvents in concentrations greater than 0.01 ppm, estimated to be 75% TCE - Soil TCE concentrations over 10 ppm |
Groundwater Extraction Wells followed by Air Stripping - 11 recovery wells at depths to over 200 feet below ground surface - Production air stripper has a design capacity of 610 gpm; operated at 510 gpm - 1993 average flow rate was 479 gpm; average air flow rate was 2,489 cfm - In 1993, 19,500 lbs of VOCs removed; average air emission rate of 2 lbs/hr | Total Capital Costs (1990 dollars) - $4,103,000 (including design, construction and installation, engineering, site development) - Total Annual Operating Costs (1990 dollars) - $149,200 (for years 1985 to 1990) (including electricity, maintenance, operation, well sampling and analysis) - Total cost of operation and maintenance is $0.75 per 1,000 gallons treated (198 million gallons per year treated) - An estimated total cost for completing the cleanup is not available at this time | ||
| FAA Technical Center, NJ Betsy Donovan (212) 637-4303 |
Ground Water Pumping/ Enhanced Biodegradation | Ground water | JP-4 | Pump-and-treat followed by H2O2 addition and reinjection. | In situ | Jet fuel tank farm. Installed. Average depth of treatment approximately 15 ft. | |
| Site Name/ Contact |
Technology/ Vendor |
Media Treated | Contaminants Treated | Operating Parameters | Materials Handling | Residuals Management | Comments |
| Test
Site - Hill AFB, UT 1994 R.S. Kerr Environmental Research Laboratory, U.S. EPA (405) 436-8552 |
Cosolvent Flushing | Ground water | BTEX, TCE, TCA, PCE, PAH | ||||
| Hazardous
Waste Landfill GEO-CON, Inc |
Slurry Wall | Ground water | VOCs | Containment | Bentonite alternative used because of saltwater environment | ||
| Site Name/ Contact |
Technology/ Vendor |
Media Treated | Contaminants Treated | Operating Parameters | Materials Handling | Residuals Management | Comments |
| Sanitary
Landfill GEO-CON, Inc |
Slurry Wall | Ground water | Limited working area | ||||
| Coal Tar Disposal Pond | Slurry Wall | Ground water | Metals and phenols | Circumferential containment of leachate from pond | Keyed to impervious till. |
Sources: Innovative Treatment Technologies: Annual Status Report (EPA, Eighth Edition, Nov. 1996). Completed North American Innovative Remediation Technology Demonstration Projects (EPA, Aug.1996)