UFC 3-280-04
17 DEC 2003
Table C-1. Background Inorganic Concentrations
mg/L
Ion
mg/L
GMW*
Valence
GEqW**
meq/L
as CaCO3
pH 6.8 [pH units]
CO2
0.00
44
H2S
0.00
34
O2
0.00
32
Anions
SO4
60
96
2
48
1.25
62.50
Cl
54
35.5
1
35.5
1.52
76.06
HCO3
30
61
1
61
0.49
24.59
CO3
0.00
60
2
30
0.00
0.00
(100.65)
Alkalinity Subtotal
Total
3.26
163.15
Cations
Ca
40
40
+2
20
2.00
100.00
Mg
10
24
+2
12
0.83
41.67
(141.67)
Hardness Subtotal
Fe
0.3
56
+2
28
0.01
0.24
Mn
0.05
55
+2
27
0.001
0.19
Na
10
23
+1
23
0.43
21.94
Cu
ND
64
+2
32
ND
_____
_____
_____
_____
_____
_____
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Total
3.28
164.04
* The [gram] molecular weight of the species (GMW).
** The [gram] equivalent weight of the species (GEqW = GMW / Valence).
Because the sampling method used during the RI/FS is not reliable for sus-
pended solids, those values were not used. The anticipated concentration is 100 mg/L
from the combined effects of sediment picked up in pumping and oxidation of inorganics
and biological growth in the stripper.
If either oil or grease is anticipated, make provisions to remove it. Design a
pre-treatment system to prevent scale or slime from clogging the air stripper and the fil-
mg/L) (personal communication with Tony Ramirez, Marlo Incorporated
). From Table C-1, at a pH of 6.8, treatment for metals is not
considered to be cost effective.
C-7
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