Environmental Engineering Reference
In-Depth Information
Leaching solution
Distilled water
buffered to pH 5
Leaching cell as zero
head-space extractor
Porous stone
Sample to be
tested and
characterized
Collector
Extract
(leachate)
FIGURE 7.4
Typical leaching cell used as a zero-head extractor for application of TCLP procedure. The results of chemical
analysis of the extract (leachate) should be compared with the regulatory values shown in Table 7.3. (Adapted
from Yong, R.N.,
Geoenvironmental Engineering: Contaminated Soils, Pollutant Fate and Mitigation
, CRC Press, Boca
Raton, 307 pp., 2001.)
TABLE 7.3
TCLP Compounds and Regulatory Levels in Extract
Compound
Level (mg/L)
Compound
Level (mg/L)
Arsenic
5.0
Hexachloro-1,3-butadiene
0.5
Barium
100.0
Hexachloroethane
3.0
Benzene
0.5
Lead
5.0
Cadmium
1.0
Lindane
0.4
Carbon tetrachloride
0.5
Mercury
0.2
Chlordane
0.03
Methoxychlor
10.0
Chlorobenzene
100.0
Methyl ethyl ketone
200
Chloroform
6.0
Nitrobenzene
2.0
Chromium
5.0
Pentachlorophenol
100.0
o
-Cresol
200.0
Pyridine
5.0
m
-Cresol
200.0
Selenium
1.0
p
-Cresol
200.0
Silver
5.0
1,4-Dichlorobenzene
7.5
Tetchoroethylene
0.7
1,2-Dichloroethane
0.5
Toxaphene
0.5
1,1-Dichloroethylene
0.7
Trichloroethylene
0.5
2,4-Dinitrotoluene
0.13
2,4,5-Trichlorophenol
400.0
Endrin
0.2
2,4,6-Trichlorophenol
2.0
Heptachlor
0.008
2,4,5-TP (silvex)
1.0
Hexachlorobenzene
0.13
Vinyl chloride
0.2
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