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 Table B-1. Air Sparging with Soil Vapor Extraction Site Characteristics
Site Name
Site Location
Soil Type
Depth to Water
Size of Site
Clean-up Level
Table
Present
Achieved
Oakland, CA
Silty sand, sandy clay
8-15 ft
500 ft x 500 ft;
BTEX; TPH;
Vapor concentrations
and gravel; Fine
15 ft BG
benzene
reduced from 11,000
grain organic silts
ppmv to below 1,000
and clays
ppmv in 8 months
Brunswick, Maine
Silty fine to medium
8 ft BG
150 ft horizontally
TPH gas(35 g/L)
Improving site
Building 538 NEX
sand
4-20 ft vertically
TPH fuel (460 g/L)
conditions (on-going)
Service Station
BTEX & MTBE (0-
5.3 g/L)
Cleveland, OH
Interfingered silt and
15-25 ft
BTEX
Site
silty clay; Sands and
TPH
sandy silt
Hydrocarbons
Silver Springs, Lyon
Loose clayey
36-38 ft
408 ft x 300 ft;
BTEX
Benzene decreased from
County, NV
sand/silt mixture;
38 ft BG
11,013 ppb to nondetect
Stiff, rhythmic
in 4 months; In 5
bedded clayey
months, 1842 gallons of
silt/silty clay; Dense
fuel extracted
to very dense, fine to
coarse, arkosick sand
2,000 ft2; 20-30 ft BG
Connecticut
Stratified sand and
19 ft.
TCE
Pilot test only; 4 lb
Electronic
gravel, fine sands and
DCA
contaminants removed in
Component
silts
TCA
4 weeks
Manufacturing
tetrachloroethane
Facility
carbon tetrachloride
Europe
Quaternary sand and
27 ft
TCE; PCE
99.18% total reduction
gravel, silty sands
of VOCs in 3 months
Sand, slit, clay
135 ft
330 ft BG
TCE; PCE
98-43.03% TCE
reduction
96.47-32.6% PCE
reduction
Table B-1. Air Sparging with Soil Vapor Extraction Site Characteristics (Continued)
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