ATSDR - PHA - KERR-MCGEE CORPORATE CUSHING REFINERY, CUSHING, PAYNE COUNTY, OKLAHOMA

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PUBLIC HEALTH ASSESSMENT

KERR-MCGEE REFINERY SITE
CUSHING, PAYNE COUNTY, OKLAHOMA

Table C5. Range of Contaminant Concentrations in On-site Monitoring Wells

Contaminant Concentration
Range - mg/L Sampling Date Reference Comparison Value

mg/L Source

Aluminum ND - 618
0.001-0.563 3-90
90-92 KM (1)
RIR (5) 0.765 background
sample
CMW-1.1

Antimony ND - RD
0.004 -0.10 3-90
90-92 KM (1)
RIR (5) 0.004 RMEG-child

Arsenic ND - 0.316
0.0036 - 0.440 3-90
90-92 KM (1)
RIR (5) 2.0E-5 CREG

Barium 0.219 - 2.27
0.019 - 0.047 3-90
90-92 KM (1)
RIR (5) 0.7 RMEG-child

Benzene ND - 0.16
0.005ND 3-90
90-92 KM (1)
RIR (5) 0.0012 CREG

Benzo(a)anthra-cene ND
0.010 3-90
90-92 KM (1)
RIR (5) .0001 PMCL

Benzo(a)pyrene ND
0.010 - 0.10 3-90
90-92 KM (1)
RIR (5) 5.0E-6 CREG

Beryllium ND - 0.0357
0.0011 - 0.0495 3-90
90-92 KM (1)
RIR (5) 8.14E-6 CREG

Bis(2-ethylhexyl)
phthalate ND - 0.083
0.001 - 0.10 3-90
90-92 KM (1)
RIR (5) 0.0025 CREG

Bromodichloro-methane ND
0.0025ND-0.005 3-90
90-92 KM (1)
RIR (5) 0.0006 CREG

Cadmium ND - 0.0071
0.001 - 0.0374 3-90
90-92 KM (1)
RIR (5) 0.007 EMEG-child
(carcinogen)

Calcium 36.2 - 639
19.9 - 2020 3-90
90-92 KM (1)
RIR (5) 36.2- 58.2 background
sample
CMW-1.1

Chromium ND - 0.336
0.002 - 1.6 3-90
90-92 KM (1)
RIR (5) 0.05 (for hexavalent chromium) RMEG-child

Chrysene ND
0.010 - 0.10 3-90
90-92 KM (1)
RIR (5) 0.0002 PMCL

Cobalt ND - 0.403
0.003ND - 0.419 3-90
90-92 KM (1)
RIR (5) ND
0.011ND background
sample
CMW-1.1

Copper 0.0343 - 0.928
0.006 3-90
90-92 KM (1)
RIR (5) 1.3 AL

Cyclohexane,1-
bromo-4-methyl ND 3-90 KM (1) none none

Cyclohexane,1,2-
dimethyl, trans ND 3-90 KM (1) none none

Cyclohexane,1-
ethyl-2-methyl, cis ND 3-90 KM (1) none none

Cyclohexane,1-
ethyl-4-methyl,
trans ND 3-90 KM (1) none none

Cyclohexane,
methyl ND 3-90 KM (1) none none

Cyclohexane,1,1,
3-trimethyl ND 3-90 KM (1) none none

Cyclohexane,1,2,
3-trimethyl ND 3-90 KM (1) none none

Cyclohexane,1,2,
3-trimethyl(1-
alpha) ND 3-90 KM (1) none none

Cyclopropane,1-
methyl-2-
(methylp) ND 3-90 KM (1) none none

Dimethyl decane ND 3-90 KM (1) none none

Dimethyl heptane ND 3-90 KM (1) none none

Hexane,2,2-
dimethyl ND 3-90 KM (1) none none

Hexanol,3-methyl ND 3-90 KM (1) none none

2-Hexanone ND
0.005 - 0.05ND 3-90
90-92 KM (1)
RIR (5) none none

Iron 1.45 - 1,280
0.226 3-90
90-92 KM (1)
RIR (5) 0.444-1.45 background
sample
CMW-1.1

Isoctanol ND 3-90 KM (1) none none

Lead ND - 0.572
0.0016 - 0.572 3-90
90-92 KM (1)
RIR (5) 0.015 AL

Magnesium 33.7 - 824
5.41 - 878 3-90
90-92 KM (1)
RIR (5) 33.7- 51.1 background
sample
CMW-1.1

Manganese 0.0877 - 48.4
0.0384 - 54.0 3-90
90-92 KM (1)
RIR (5) .05 RMEG-child

Mercury ND - 0.0059
0.0002 3-90
90-92 KM (1)
RIR (5) 0.002 LTHA

2-Methyl-naphthalene ND - 1.3
0.001 - 0.10 3-90
90-92 KM (1)
RIR (5) ND background
sample
CMW-1.1

Naphthalene ND - 0.41
0.004 - 0.10 3-90
90-92 KM (1)
RIR (5) 0.02 LTHA

Nickel ND - 0.931
0.007 - 1.63 3-90
90-92 KM (1)
RIR (5) 0.2 RMEG-child

N-nitrosodi-phenylamine ND
0.010 - 0.023ND 3-90
90-92 KM (1)
RIR (5) .007 CREG

Oxirane, 2-(1,1-
dimethylethyl)-3
ethyl ND 3-90 KM (1) none none

Pentane, 2,3-
dimethyl ND 3-90 KM (1) none none

1-Pentene, 2,3-
dimethyl ND 3-90 KM (1) none none

Phenanthrene ND - RD
0.007 - 0.1 3-90
90-92 KM (1)
RIR (5) none none

Potassium 5.88 - 82.9
0.463 - 119.0 3-90
90-92 KM (1)
RIR (5) none none

Selenium ND - 0.0088
0.002 - .030 3-90
90-92 KM (1)
RIR (5) 0.03 EMEG-child

Silver ND
0.002ND - 0.0139 3-90
90-92 KM (1)
RIR (5) 0.02 RMEG-child

Sodium 36.2 - 1,110
36.2 - 1700 3-90
90-92 KM (1)
RIR (5) 37.3-59.7 background
sample
CMW-1.1

Trichloroethylene ND

0.005ND-0.025ND
3-90
90-92 KM (1)
RIR (5) 0.0032 CREG

Trichloropro-
pylene ND 3-90 KM (1) none none

Trimethylpentane ND 3-90 KM (1) none none

Vanadium 0.0647 - 0.865
0.003 - 1.03 3-90
90-92 KM (1)
RIR (5) 0.03 IMEG - child

Zinc 0.0268 - 1.79
0.012 - 1.79 3-90
90-92 KM (1)
RIR (5) 3 RMEG-child

Table C6. Radioactivity in On-Site Monitoring Wells

Measurement Range
pCi/L Sampling Date Reference Primary Drinking
Water Standard (40
CFR 141, 142)¹

Radium-226 -0.2 to 0.6 5/86 FIT (1) 20 pCi/L (MCL²)

Radium-228 0.6 to 5.2 5/86 FIT (1) 20 pCi/L (MCL)

Uranium-233,234 1.6 to 16 5/86 FIT (1) 26 pCi/L

Uranium-235 0.0 to 0.49 5/86 FIT (1) 26 pCi/L

Uranium-238 0.44 to 15 5/86 FIT (1) 26 pCi/L

Thorium-232 0.00 to 0.84 5/86 FIT (1) 92 pCi/L

Thorium-230 0.15 to 0.72 5/86 FIT (1) 83 pCi/L

Thorium-228 0.19 to 1.6 5/86 FIT (1) 153 pCi/L

Thorium-227 -0.01 to 0.02 5/86 FIT (1) 662 pCi/L

Lead-210 0.1 to 1.0 5/86 FIT (1) 1 pCi/L

Polonium-210 0.2 to 2.0 5/86 FIT (1) 14 pCi/L

1. Proposed limits - For uranium, thorium, lead, and polonium, the value listed is the concentration in water for a lifetime mortality risk of one in ten thousand (1 x 10^-4).
2. MCL - Maximum contaminant level.

Table C7. Range of Contaminant Concentrations in On-site Surface Water Samples Note: The last two data sets identify separately information for samples taken from:
o Tributaries to Skull Creek, near Pits 1, 2, 3, and 4
o Skull Creek, including samples adjacent to Pit 5

Contaminant Concentration
Range - mg/L Sampling Date Reference Comparison Value

mg/L Source

Aluminum 7.37 - 7.59
NA
1.05
NA
0.104 - 87.6
0.176 - 0.256 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.11 - 16.5 background
samples
WS-1A FIT,
WS-36A FIT

Antimony ND
NA
ND
NA
0.035ND - 0.07
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.004 RMEG-child

Arsenic ND - 0.16
NA
ND
NA
0.006ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 2.0E-5 CREG

Barium ND
NA
ND
NA
RD
0.066 - 0.109 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.7 RMEG-child

Benzene ND
ND - 0.011
DU
ND - 0.016
ND
ND - 0.001 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.0012 CREG

Benzo(a)anthra-cene ND
ND
ND
ND
0.010-0.020ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) .0001 PMCL

Benzo(a)pyrene ND
ND
ND
ND
0.010-0.020ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 5.0E-6 CREG

Beryllium ND - 0.002
NA
ND
NA
0.001ND-0.0072
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 8.14E-6 CREG

Bis(2-ethylhexyl)
phthalate 0.003 - 0.004
RD - 0.0031
ND
ND - 0.01
0.010 -0.020ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.0025 CREG

Bromodichloro-methane ND
ND
ND
ND - 0.04
0.005ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.0006 CREG

Cadmium 0.004 - 0.014
NA
ND
NA
0.002ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.007 EMEG-child
(carcinogen)

Calcium 143 - 154
NA
69
NA
189 - 322
74.3 - 89.6 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 74.8 - 97.9 background
samples
WS-1A FIT,
WS-36A FIT

Chromium 0.005 - 0.066
NA
ND
NA
0.007ND-0.054
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.05 (for
hexavalent
chromium) RMEG-child

Chrysene ND
ND
ND
ND
0.010ND-0.020ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.0002 PMCL

Cobalt ND - 0.02
NA
ND
NA
0.006ND-0.199
ND - 0.008 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) ND - 0.03 background
samples
WS-1A FIT,
WS-36A FIT

Copper 0.002 - 0.016
NA
ND
NA
0.005ND-0.122
ND - 0.009 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 1.3 AL

Cyclohexane,1-
bromo-4-methyl ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Cyclohexane,1,2-
dimethyl, trans ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Cyclohexane,1-ethyl-2-methyl,cis ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Cyclohexane,1-ethyl-4-methyl,trans ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Cyclohexane,
methyl ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Cyclohexane,1,1
,3-trimethyl ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Cyclohexane,1,2,
3-trimethyl ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Cyclohexane,1,2,
3-trimethyl(1-
alpha) ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Cylopropane, 1-methyl-2-(methylp) ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Dimethyl decane ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Dimethylheptane ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Hexane,2,2-dimethyl ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Hexanol,3-methyl ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

2-Hexanone ND
ND
ND
ND
0.010ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Iron 9.91 - 21.9
NA
7.75
NA
0.698 - 132
0.306 - 1.00 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 1.19 - 14.3 background
samples

Isoctanol ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Lead 0.005 - 0.11
NA
ND
NA
0.003ND-0.080ND
ND - 0.001 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.015 AL

Magnesium 62.4 - 75
NA
40.8
NA
56.9 - 264
44.3 - 56.3 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 39.6 - 52.6 background
samples
WS-1A FIT
WS-36A FIT

Manganese 5.7 - 7.83
NA
1.55
NA
0.257 - 28.6
.209 - 0.791 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) .05 RMEG-child

Mercury ND - 0.0008
NA
ND
NA
0.0002ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.002 LTHA

2-
Methylnaphthalene ND
ND
ND
ND
0.020ND
0.001 - 0.007 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Naphthalene ND
ND
ND
ND
0.010-0.020ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.02 LTHA

Nickel ND - 0.066
NA
ND
NA
0.008ND-0.206
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.2 RMEG-child

N-nitrosodi-
phenylamine ND
ND
ND
ND
0.010ND-0.020ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) .007 CREG

Oxirane,2-(1,1-
dimethylethyl)-3
ethyl ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Pentane,2,3-
dimethyl ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

1-Pentene,2,3-
dimethyl ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Phenanthrene ND
ND
ND
ND
0.010-0.020ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Potassium 2.97 - 7.92
NA
6.4
NA
1.34 - 14.8
2.44 - 3.80 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 4.62 - 5.96 background
samples
WS-1A FIT
WS-36A FIT

Selenium ND - 0.11
NA
ND
NA
0.002ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.02 EMEG-child

Silver 0.005 - 0.009
NA
ND
NA
0.006ND-0.019
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.05 RMEG-child

Sodium 60.5 - 726
NA
122
NA
86.4 - 257
109 - 144 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 101 -110 background
samples
WS-1A FIT
WS-36A FIT

Trichloroethylene ND
ND - 0.0089
ND
ND
0.005ND
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.0032 CREG

Trichloropro-pylene ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Trimethylpentane ND
ND
ND
NA
NA 5-86
9-87
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (1)
RIR (5)(9)
RIR (5)(9) none none

Vanadium ND
NA
ND
NA
0.006ND-0.092
ND 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 0.03 IEMEG-child

Zinc 0.068 - 0.172
NA
0.09
NA
0.019 - 0.33
0.0048 - 0.0051 5-86
9-87
3-88
5-88
90-92
90-92 FIT (1)
KM (1)
TAT (3)
TAT (1)
RIR (5)(9)
RIR (5)(9) 3 RMEG-child

Table C8. Range of Contaminant Concentrations in Off-Site Sludge
Note: Samples taken on Property A

Contaminant Concentration
Range - mg/kg Sampling Date Reference Comparison Value

mg/kg Source

Aluminum 1,640 - 28,200 3/88 TAT (3) 58,000 Western U.S.
background

Antimony ND 3/88 TAT (3) 0.8 RMEG-pica

Arsenic ND 3/88 TAT (3) 0.6 CREG

Barium ND - 676 3/88 TAT (3) 100 RMEG-pica

Benzene ND 3/88 TAT (3) 20 CREG

Benzo(a)anthra-cene ND 3/88 TAT (3) none none-carcinogen

Benzo(a)pyrene ND 3/88 TAT (3) 0.1 CREG

Beryllium ND 3/88 TAT (3) 0.2 CREG

Bis(2-ethylhexyl)-phthalate ND 3/88 TAT (3) 40 RMEG-pica

Bromodichloro-methane ND 3/88 TAT (3) 10
40 CREG
EMEG-pica

Cadmium ND 3/88 TAT (3) 1.0 EMEG-pica

Calcium 1,200 - 13,500 3/88 TAT (3) 18,000 Western U.S.
background

Chromium ND - 993 3/88 TAT (3) 10 (for hexavalent
chromium) RMEG- pica

Chrysene ND 3/88 TAT (3) none none-carcinogen

Cobalt ND 3/88 TAT (3) 7.1 Western U.S.
background

Copper ND - 154 3/88 TAT (3) 21 Western U.S.
background

Cyclohexane, 1-
bromo-4-methyl ND 3/88 TAT (3) none none

Cyclohexane, 1,2-
dimethyl, trans ND 3/88 TAT (3) none none

Cyclohexane, 1-
ethyl-2-methyl, cis ND 3/88 TAT (3) none none

Cyclohexane, 1-
ethyl-4-methyl,
trans ND 3/88 TAT (3) none none

Cyclohexane,
methyl ND 3/88 TAT (3) none none

Cyclohexane,
1,1,3-trimethyl ND 3/88 TAT (3) none none

Cyclohexane,
1,2,3-trimethyl ND 3/88 TAT (3) none none

Cyclohexane,
1,2,3-trimethyl (1-alpha) ND 3/88 TAT (3) none none

Cylopropane, 1-
methyl-2-
(methylp)
ND 3/88 TAT (3) none none

Dimethyl decane ND 3/88 TAT (3) none none

Dimethyl heptane ND 3/88 TAT (3) none none

Hexane,2,2-dimethyl ND 3/88 TAT (3) none none

Hexanol,3-methyl ND 3/88 TAT (3) none none

2-Hexanone ND 3/88 TAT (3) none none

Iron 3,050 - 22,000 3/88 TAT (3) 21,000 Western U.S.
background

Isoctanol ND 3/88 TAT (3) none none

Lead ND - 569 3/88 TAT (3) 17 Western U.S.
background
(carcinogen)

Magnesium ND - 7,280 3/88 TAT (3) 7,800 Western U.S.
background

Manganese ND - 322 3/88 TAT (3) 300 RMEG-pica

Mercury ND 3/88 TAT (3) none none

2-
Methylnaphthalene ND 3/88 TAT (3) none none

Naphthalene ND 3/88 TAT (3) none none

Nickel ND 3/88 TAT (3) 40 RMEG-pica</td>

N-nitrosodi-
phenylamine ND 3/88 TAT (3) 100 CREG

Oxirane,2-(1,1-
dimethylethyl)-3
ethyl ND 3/88 TAT (3) none none

Pentane, 2,3-
dimethyl ND 3/88 TAT (3) none none

1-Pentene, 2,3-
dimethyl ND 3/88 TAT (3) none none

Phenanthrene ND 3/88 TAT (3) none none

Potassium ND 3/88 TAT (3) 18,000 Western U.S.
background

Selenium ND 3/88 TAT (3) 4 EMEG-pica

Silver ND - 71 3/88 TAT (3) 10 RMEG-pica

Sodium ND - 19,900 3/88 TAT (3) 10,000 Western U.S.
background

Trichloroethylene ND 3/88 TAT (3) 60 CREG

Trichloropro-pylene ND 3/88 TAT (3) none none

Trimethylpentane ND 3/88 TAT (3) none none

Vanadium ND 3/88 TAT (3) none none

Zinc ND - 428 3/88 TAT (3) 600 RMEG-pica

Table C9. Range of Contaminant Concentrations and Radioactivity in Off-Site Soil
Three sets of inorganic and organic chemical concentration values are listed for samples taken on:
o Property A Note: Samples were analyzed for organic compounds but results are not in project files.
o Residential yard north of Property A (1 sample) Note: Sample was analyzed for organic compounds but results are not in project files.
o Deep Rock School property
See note at end of table for discussion of radioactivity at Deep Rock School property, and on a resident's property located between Deep Rock Road and Property A. Radioactivity measurement results for many other off-site locations are included in Table 2 as "Background" information for comparison with on-site radioactivity levels.

Contaminant Concentration
Range - mg/kg Sampling Date Reference Comparison Value

mg/kg Source

Aluminum 55,241 - 28,027
11,932
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 58,000 Western U.S.
background

Antimony ND - 11
ND
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 0.8 RMEG-pica

Arsenic 5.25 - 20.39
5.25
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 0.6 CREG

Barium 92 - 791
164
39-133 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 100 RMEG-pica

Benzene NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 20 CREG

Benzo(a)anthra-
cene NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Benzo(a)pyrene NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 0.1 CREG

Beryllium 1 - 27
ND
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 0.2 CREG

Bis(2-ethylhexyl)-
phthalate NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 40 RMEG-pica

Bromodichloro-
methane NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 10
40 CREG
EMEG-pica

Cadmium 1 - 8
ND
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 1.0 EMEG-pica

Calcium 3,271 - 28,539
4,754
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 18,000 Western U.S.
background

Chromium 17 - 128
21
6-13 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 10 (for hexavalent
chromium) RMEG- pica

Chrysene NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none-carcinogen

Cobalt ND - 15
ND
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 7.1 Western U.S.
background

Copper 19 - 141
ND
3-14 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 21 Western U.S.
background

Cyclohexane, 1-
bromo-4-methyl NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Cyclohexane, 1,2-
dimethyl, trans NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Cyclohexane, 1-
ethyl-2-methyl, cis NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Cyclohexane, 1-
ethyl-4-methyl,
trans NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Cyclohexane,
methyl NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Cyclohexane,
1,1,3-trimethyl NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Cyclohexane,
1,2,3-trimethyl ND
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Cyclohexane,
1,2,3-trimethyl (1-
alpha) NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Cylopropane, 1-
methyl-2-
(methylp) NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Dimethyldecane NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Dimethylheptane NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Hexane, 2,2-
dimethyl NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Hexanol, 3-methyl NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

2-Hexanone NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Iron 13,717 - 32,801
14,547
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 21,000 Western U.S.
background

Isoctanol NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Lead 74 - 2,564
107
4-40 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 17 Western U.S.
background
(carcinogen)

Magnesium 1,315 - 7,097
1,892
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 7,800 Western U.S.
background

213 - 746
406
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 300 RMEG-pica

Mercury ND - 0.185
0.626
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none

2-
Methylnaphthalene NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Naphthalene NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Nickel 12 - 36
ND
3-7 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 40 RMEG-pica

N-nitrosodi-
phenylamine NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 100 CREG

Oxirane,2-(1,1-
dimethylethyl)-3
ethyl NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Pentane, 2,3-
dimethyl NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

1-Pentene, 2,3-
dimethyl NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Phenanthrene NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Potassium 964 - 2,720
1,774
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 18,000 Western U.S.
background

Selenium NI
ND
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 4 EMEG-pica

Silver 2 - 4
ND
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 10 RMEG-pica

Sodium 183 - 363
ND
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 10,000 Western U.S.
background

Thallium ND - 1
ND
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Trichloroethylene NI
NI
ND 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 60 CREG

Trichloropro-
pylene NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Trimethylpentane NI
NI
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Vanadium 19 - 40
ND
NA 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) none none

Zinc 108 - 914
ND
11 - 52 3/88
3/88
6/95 TAT (3)
TAT (3)
ODEQ (32) 600 RMEG-pica

Note: Field radioactivity measurements on Deep Rock School grounds were between 10 and 15 micro R per hour (background measurements were about 10 micro R per hour [ODEQ (32)]. For samples from a resident's property located south of Property A and north of Deep Rock Road, A, laboratory analytical results showed U-238, U-235, and Th-232, were less than the minimum detection limit. Ra-226 exceeded the minimum detection limit for only one of 5 samples analyzed and was found in that sample to be 2.6 picoCuries per gram [KM (40)]. Alpha and beta activity on that property did not exceed 17 and 21 pC/g, respectively [ODEQ (39)]. Data for other off-site locations (Table C2) have shown radioactivity to be at generally expected background levels.

Table C10. Range of Contaminant Concentrations in Off-site Sediment Samples Note: Samples represented as follows:
o Skull Creek and tributaries, upstream and downstream of site
o Skull Creek and tributaries, downstream of site near Property A
o Property A, drainages and pond
o Skull Creek and tributary, downstream of site between Deep Rock Road and Property A. See note at end of table for discussion about organic contaminants.

Contaminant Concentration
Range - mg/kg Sampling Date Reference Comparison Value

mg/kg Source

Aluminum 340 - 9,130
9,812 - 11,267
5,807 - 19,125
2,430 - 3,040 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 58,000 Western U.S.
background

Antimony RD
ND
ND
0.56 - 1.1 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 0.8 RMEG-pica

Arsenic ND - 7.4
8.3 - 22.9
6.34 - 23.85
ND - 9.9 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 0.6 CREG

Barium ND - RD
205 - 236
269 - 3,641
72 - 168 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 100 RMEG-pica

Benzene ND
DU
DU 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) 20 CREG

Benzo(a)anthra-
cene ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none-carcinogen

Benzo(a)pyrene ND - 1.5
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) 0.1 CREG

Beryllium ND
2
2 - 4
0.32 - 0.39 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 0.2 CREG

Bis(2-ethylhexyl)-
phthalate ND - RD
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) 40 RMEG-pica

Bromodichloro-
methane ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) 10
40 CREG
EMEG-pica

Cadmium ND
ND
ND
0.3 - 1 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 1.0 EMEG-pica

Calcium 5,750 - 16,700
7, 186 - 11,902
2,770 - 8,677
2,400 - 5010 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 18,000 Western U.S.
background

Chromium 17 - 28
98 - 117
156 - 4,186
5.4 - 47 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 10 (for hexavalent
chromium) RMEG- pica

Chrysene ND - RD
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none-carcinogen

Cobalt ND - 37
8
3 - 9
2.8 - 5.5 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 7.1 Western U.S.
background

Copper 14 - 15
42 - 50
57 - 651
12 - 32 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 21 Western U.S.
background

Cyclohexane, 1-
bromo-4-methyl ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Cyclohexane, 1,2-
dimethyl, trans ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Cyclohexane, 1-
ethyl-2-methyl, cis ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Cyclohexane, 1-
ethyl,l-4-methyl,
trans ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Cyclohexane,
methyl ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Cyclohexane,
1,1,3-trimethyl ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Cyclohexane,
1,2,3-trimethyl ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Cyclohexane,
1,2,3-trimethyl (1-
alpha) ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Cylopropane, 1-
methyl-2-
(methylp) ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Dimethyldecane ND
ND
ND 5-86 3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Dimethylheptane ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Hexane, 2,2-
dimethyl ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Hexanol, 3-methyl ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

2-Hexanone ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Iron 10,000 - 21,200
17,745 - 22,185
21,690 - 32,502
832 - 17,900 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 21,000 Western U.S.
background

Isoctanol ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Lead 18 - 60
165 - 277
129 - 1,839
92 - 634 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 17 Western U.S.
background
(carcinogen)

Magnesium 3,150 - 4,210
2,209 - 3,602
1,516 - 3,493
832 - 1,020 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 7,800 Western U.S.
background

Manganese RD - 922
602 - 856
132 - 255
101 - 588 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 300 RMEG-pica

Mercury ND
0.16 - 0.21
0.3 - 4.441
0.06 - 0.11 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) none none

2-
Methylnaphthalene ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Naphthalene ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Nickel ND
14 - 15
21 - 25 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) 40 RMEG-pica

N-nitrosodi-
phenylamine ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) 100 CREG

Oxirane, 2-(1,1-
dimethylethyl)-3
ethyl ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Pentane, 2,3-
dimethyl ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)

TAT (3)
none none

1-Pentene, 2,3-
dimethyl ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Phenanthrene ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Potassium RD
1,337 - 1,490
721 - 2,480
308 - 385 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 18,000 Western U.S.
background

Selenium RD
ND
ND
ND 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 4 EMEG-pica

Silver ND
ND - 2
3 - 4
ND 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 10 RMEG-pica

Sodium RD
339 - 399
156 - 695
108 - 131 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 10,000 Western U.S.
background

Trichloroethylene ND
DU
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) 60 CREG

Trichloropro-
pylene ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Trimethylpentane ND
ND
ND 5-86
3-88
3-88 FIT (1)
TAT (3)
TAT (3) none none

Vanadium ND - RD
25 - 29
23 - 37
10 - 13 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) none none

Zinc 57 - 109
148 - 222
165 - 1,516
35 - 100 5-86
3-88
3-88
12-95 FIT (1)
TAT (3)
TAT (3)
SLO (37),
ODEQ (39) 600 RMEG-pica

Note: Analyses of two samples (each split) of sediment taken in 1995 from Skull Creek and a tributary downstream from the site, between Deep Rock Road and Property A detected 23 of the common organic compounds. A few of those detected were VOCs; most were SVOCs. ATSDR comparison values are available for 15 of the compounds; none exceeded a comparison value. Eleven of the 15 were present at less than 10 ppm. The maximum concentration for the other four was 44 ppm. Eight compounds detected have no ATSDR comparison value. Those include benzo(a)anthracene, benzo(b)fluoranthene, benzo(ghi)perylene, carbazole, chrysene, dibenzo(ah)anthracene, 2-methylnaphthalene, and phenanthrene. The highest concentrations were for 2-methylnaphthalene (35 ppm) and phenanthrene (89 ppm). The others were less than 20 ppm.

Table C11. Radioactivity in Off-Site Sediments

Measurement
or Isotope Sediment
Range pCi/g Sampling Date Reference

Radium-226 0.6 to 1.2 5/86 FIT (1)

Radium-228 0.7 to 1.0 5/86 FIT (1)

Uranium-233,234 .31 to.36 5/86 FIT (1)

Uranium-235 -.02 to .01 5/86 FIT (1)

Uranium-238 .26 to .41 5/86 FIT (1)

Thorium-232 .40 to 1.1 5/86 FIT (1)

Thorium-230 .49 to 1.2 5/86 FIT (1)

Thorium-228 .30 to 1.2 5/86 FIT (1)

Thorium-227 -.01 to 0.0 5/86 FIT (1)

Lead-210 1.6 to 1.7 5/86 FIT (1)

Polonium-210 .45 to 0.8 5/86 FIT (1)

Note: In 1994, analyses of Skull Creek sediment south of Property A showed U-238, U-35, Th-232, Ra-226, gross alpha, gross beta, and gamma radiation to be at area background levels [KM (40)] [ODEQ (39)]

Next Section Table of Contents

Agency for Toxic Substances and Disease Registry, 1825 Century Blvd, Atlanta, GA 30345
Contact CDC: 800-232-4636 / TTY: 888-232-6348

Department of Health and Human Services

Table C5. Range of Contaminant Concentrations in On-site Monitoring Wells
Contaminant	Concentration Range - mg/L	Sampling Date	Reference	Comparison Value
Contaminant	Concentration Range - mg/L	Sampling Date	Reference	mg/L	Source
Aluminum	ND - 618 0.001-0.563	3-90 90-92	KM (1) RIR (5)	0.765	background sample CMW-1.1
Antimony	ND - RD 0.004 -0.10	3-90 90-92	KM (1) RIR (5)	0.004	RMEG-child
Arsenic	ND - 0.316 0.0036 - 0.440	3-90 90-92	KM (1) RIR (5)	2.0E-5	CREG
Barium	0.219 - 2.27 0.019 - 0.047	3-90 90-92	KM (1) RIR (5)	0.7	RMEG-child
Benzene	ND - 0.16 0.005ND	3-90 90-92	KM (1) RIR (5)	0.0012	CREG
Benzo(a)anthra-cene	ND 0.010	3-90 90-92	KM (1) RIR (5)	.0001	PMCL
Benzo(a)pyrene	ND 0.010 - 0.10	3-90 90-92	KM (1) RIR (5)	5.0E-6	CREG
Beryllium	ND - 0.0357 0.0011 - 0.0495	3-90 90-92	KM (1) RIR (5)	8.14E-6	CREG
Bis(2-ethylhexyl) phthalate	ND - 0.083 0.001 - 0.10	3-90 90-92	KM (1) RIR (5)	0.0025	CREG
Bromodichloro-methane	ND 0.0025ND-0.005	3-90 90-92	KM (1) RIR (5)	0.0006	CREG
Cadmium	ND - 0.0071 0.001 - 0.0374	3-90 90-92	KM (1) RIR (5)	0.007	EMEG-child (carcinogen)
Calcium	36.2 - 639 19.9 - 2020	3-90 90-92	KM (1) RIR (5)	36.2- 58.2	background sample CMW-1.1
Chromium	ND - 0.336 0.002 - 1.6	3-90 90-92	KM (1) RIR (5)	0.05 (for hexavalent chromium)	RMEG-child
Chrysene	ND 0.010 - 0.10	3-90 90-92	KM (1) RIR (5)	0.0002	PMCL
Cobalt	ND - 0.403 0.003ND - 0.419	3-90 90-92	KM (1) RIR (5)	ND 0.011ND	background sample CMW-1.1
Copper	0.0343 - 0.928 0.006	3-90 90-92	KM (1) RIR (5)	1.3	AL
Cyclohexane,1- bromo-4-methyl	ND	3-90	KM (1)	none	none
Cyclohexane,1,2- dimethyl, trans	ND	3-90	KM (1)	none	none
Cyclohexane,1- ethyl-2-methyl, cis	ND	3-90	KM (1)	none	none
Cyclohexane,1- ethyl-4-methyl, trans	ND	3-90	KM (1)	none	none
Cyclohexane, methyl	ND	3-90	KM (1)	none	none
Cyclohexane,1,1, 3-trimethyl	ND	3-90	KM (1)	none	none
Cyclohexane,1,2, 3-trimethyl	ND	3-90	KM (1)	none	none
Cyclohexane,1,2, 3-trimethyl(1- alpha)	ND	3-90	KM (1)	none	none
Cyclopropane,1- methyl-2- (methylp)	ND	3-90	KM (1)	none	none
Dimethyl decane	ND	3-90	KM (1)	none	none
Dimethyl heptane	ND	3-90	KM (1)	none	none
Hexane,2,2- dimethyl	ND	3-90	KM (1)	none	none
Hexanol,3-methyl	ND	3-90	KM (1)	none	none
2-Hexanone	ND 0.005 - 0.05ND	3-90 90-92	KM (1) RIR (5)	none	none
Iron	1.45 - 1,280 0.226	3-90 90-92	KM (1) RIR (5)	0.444-1.45	background sample CMW-1.1
Isoctanol	ND	3-90	KM (1)	none	none
Lead	ND - 0.572 0.0016 - 0.572	3-90 90-92	KM (1) RIR (5)	0.015	AL
Magnesium	33.7 - 824 5.41 - 878	3-90 90-92	KM (1) RIR (5)	33.7- 51.1	background sample CMW-1.1
Manganese	0.0877 - 48.4 0.0384 - 54.0	3-90 90-92	KM (1) RIR (5)	.05	RMEG-child
Mercury	ND - 0.0059 0.0002	3-90 90-92	KM (1) RIR (5)	0.002	LTHA
2-Methyl-naphthalene	ND - 1.3 0.001 - 0.10	3-90 90-92	KM (1) RIR (5)	ND	background sample CMW-1.1
Naphthalene	ND - 0.41 0.004 - 0.10	3-90 90-92	KM (1) RIR (5)	0.02	LTHA
Nickel	ND - 0.931 0.007 - 1.63	3-90 90-92	KM (1) RIR (5)	0.2	RMEG-child
N-nitrosodi-phenylamine	ND 0.010 - 0.023ND	3-90 90-92	KM (1) RIR (5)	.007	CREG
Oxirane, 2-(1,1- dimethylethyl)-3 ethyl	ND	3-90	KM (1)	none	none
Pentane, 2,3- dimethyl	ND	3-90	KM (1)	none	none
1-Pentene, 2,3- dimethyl	ND	3-90	KM (1)	none	none
Phenanthrene	ND - RD 0.007 - 0.1	3-90 90-92	KM (1) RIR (5)	none	none
Potassium	5.88 - 82.9 0.463 - 119.0	3-90 90-92	KM (1) RIR (5)	none	none
Selenium	ND - 0.0088 0.002 - .030	3-90 90-92	KM (1) RIR (5)	0.03	EMEG-child
Silver	ND 0.002ND - 0.0139	3-90 90-92	KM (1) RIR (5)	0.02	RMEG-child
Sodium	36.2 - 1,110 36.2 - 1700	3-90 90-92	KM (1) RIR (5)	37.3-59.7	background sample CMW-1.1
Trichloroethylene	ND 0.005ND-0.025ND	3-90 90-92	KM (1) RIR (5)	0.0032	CREG
Trichloropro- pylene	ND	3-90	KM (1)	none	none
Trimethylpentane	ND	3-90	KM (1)	none	none
Vanadium	0.0647 - 0.865 0.003 - 1.03	3-90 90-92	KM (1) RIR (5)	0.03	IMEG - child
Zinc	0.0268 - 1.79 0.012 - 1.79	3-90 90-92	KM (1) RIR (5)	3	RMEG-child

Table C6. Radioactivity in On-Site Monitoring Wells
Measurement	Range pCi/L	Sampling Date	Reference	Primary Drinking Water Standard (40 CFR 141, 142)¹
Radium-226	-0.2 to 0.6	5/86	FIT (1)	20 pCi/L (MCL²)
Radium-228	0.6 to 5.2	5/86	FIT (1)	20 pCi/L (MCL)
Uranium-233,234	1.6 to 16	5/86	FIT (1)	26 pCi/L
Uranium-235	0.0 to 0.49	5/86	FIT (1)	26 pCi/L
Uranium-238	0.44 to 15	5/86	FIT (1)	26 pCi/L
Thorium-232	0.00 to 0.84	5/86	FIT (1)	92 pCi/L
Thorium-230	0.15 to 0.72	5/86	FIT (1)	83 pCi/L
Thorium-228	0.19 to 1.6	5/86	FIT (1)	153 pCi/L
Thorium-227	-0.01 to 0.02	5/86	FIT (1)	662 pCi/L
Lead-210	0.1 to 1.0	5/86	FIT (1)	1 pCi/L
Polonium-210	0.2 to 2.0	5/86	FIT (1)	14 pCi/L

Table C7. Range of Contaminant Concentrations in On-site Surface Water Samples Note: The last two data sets identify separately information for samples taken from: o Tributaries to Skull Creek, near Pits 1, 2, 3, and 4 o Skull Creek, including samples adjacent to Pit 5
Contaminant	Concentration Range - mg/L	Sampling Date	Reference	Comparison Value
Contaminant	Concentration Range - mg/L	Sampling Date	Reference	mg/L	Source
Aluminum	7.37 - 7.59 NA 1.05 NA 0.104 - 87.6 0.176 - 0.256	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.11 - 16.5	background samples WS-1A FIT, WS-36A FIT
Antimony	ND NA ND NA 0.035ND - 0.07 ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.004	RMEG-child
Arsenic	ND - 0.16 NA ND NA 0.006ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	2.0E-5	CREG
Barium	ND NA ND NA RD 0.066 - 0.109	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.7	RMEG-child
Benzene	ND ND - 0.011 DU ND - 0.016 ND ND - 0.001	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.0012	CREG
Benzo(a)anthra-cene	ND ND ND ND 0.010-0.020ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	.0001	PMCL
Benzo(a)pyrene	ND ND ND ND 0.010-0.020ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	5.0E-6	CREG
Beryllium	ND - 0.002 NA ND NA 0.001ND-0.0072 ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	8.14E-6	CREG
Bis(2-ethylhexyl) phthalate	0.003 - 0.004 RD - 0.0031 ND ND - 0.01 0.010 -0.020ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.0025	CREG
Bromodichloro-methane	ND ND ND ND - 0.04 0.005ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.0006	CREG
Cadmium	0.004 - 0.014 NA ND NA 0.002ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.007	EMEG-child (carcinogen)
Calcium	143 - 154 NA 69 NA 189 - 322 74.3 - 89.6	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	74.8 - 97.9	background samples WS-1A FIT, WS-36A FIT
Chromium	0.005 - 0.066 NA ND NA 0.007ND-0.054 ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.05 (for hexavalent chromium)	RMEG-child
Chrysene	ND ND ND ND 0.010ND-0.020ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.0002	PMCL
Cobalt	ND - 0.02 NA ND NA 0.006ND-0.199 ND - 0.008	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	ND - 0.03	background samples WS-1A FIT, WS-36A FIT
Copper	0.002 - 0.016 NA ND NA 0.005ND-0.122 ND - 0.009	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	1.3	AL
Cyclohexane,1- bromo-4-methyl	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Cyclohexane,1,2- dimethyl, trans	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Cyclohexane,1-ethyl-2-methyl,cis	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Cyclohexane,1-ethyl-4-methyl,trans	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Cyclohexane, methyl	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Cyclohexane,1,1 ,3-trimethyl	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Cyclohexane,1,2, 3-trimethyl	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Cyclohexane,1,2, 3-trimethyl(1- alpha)	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Cylopropane, 1-methyl-2-(methylp)	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Dimethyl decane	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Dimethylheptane	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Hexane,2,2-dimethyl	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Hexanol,3-methyl	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
2-Hexanone	ND ND ND ND 0.010ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Iron	9.91 - 21.9 NA 7.75 NA 0.698 - 132 0.306 - 1.00	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	1.19 - 14.3	background samples
Isoctanol	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Lead	0.005 - 0.11 NA ND NA 0.003ND-0.080ND ND - 0.001	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.015	AL
Magnesium	62.4 - 75 NA 40.8 NA 56.9 - 264 44.3 - 56.3	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	39.6 - 52.6	background samples WS-1A FIT WS-36A FIT
Manganese	5.7 - 7.83 NA 1.55 NA 0.257 - 28.6 .209 - 0.791	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	.05	RMEG-child
Mercury	ND - 0.0008 NA ND NA 0.0002ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.002	LTHA
2- Methylnaphthalene	ND ND ND ND 0.020ND 0.001 - 0.007	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Naphthalene	ND ND ND ND 0.010-0.020ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.02	LTHA
Nickel	ND - 0.066 NA ND NA 0.008ND-0.206 ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.2	RMEG-child
N-nitrosodi- phenylamine	ND ND ND ND 0.010ND-0.020ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	.007	CREG
Oxirane,2-(1,1- dimethylethyl)-3 ethyl	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Pentane,2,3- dimethyl	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
1-Pentene,2,3- dimethyl	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Phenanthrene	ND ND ND ND 0.010-0.020ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Potassium	2.97 - 7.92 NA 6.4 NA 1.34 - 14.8 2.44 - 3.80	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	4.62 - 5.96	background samples WS-1A FIT WS-36A FIT
Selenium	ND - 0.11 NA ND NA 0.002ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.02	EMEG-child
Silver	0.005 - 0.009 NA ND NA 0.006ND-0.019 ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.05	RMEG-child
Sodium	60.5 - 726 NA 122 NA 86.4 - 257 109 - 144	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	101 -110	background samples WS-1A FIT WS-36A FIT
Trichloroethylene	ND ND - 0.0089 ND ND 0.005ND ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.0032	CREG
Trichloropro-pylene	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Trimethylpentane	ND ND ND NA NA	5-86 9-87 5-88 90-92 90-92	FIT (1) KM (1) TAT (1) RIR (5)(9) RIR (5)(9)	none	none
Vanadium	ND NA ND NA 0.006ND-0.092 ND	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	0.03	IEMEG-child
Zinc	0.068 - 0.172 NA 0.09 NA 0.019 - 0.33 0.0048 - 0.0051	5-86 9-87 3-88 5-88 90-92 90-92	FIT (1) KM (1) TAT (3) TAT (1) RIR (5)(9) RIR (5)(9)	3	RMEG-child

Table C8. Range of Contaminant Concentrations in Off-Site Sludge Note: Samples taken on Property A
Contaminant	Concentration Range - mg/kg	Sampling Date	Reference	Comparison Value
Contaminant	Concentration Range - mg/kg	Sampling Date	Reference	mg/kg	Source
Aluminum	1,640 - 28,200	3/88	TAT (3)	58,000	Western U.S. background
Antimony	ND	3/88	TAT (3)	0.8	RMEG-pica
Arsenic	ND	3/88	TAT (3)	0.6	CREG
Barium	ND - 676	3/88	TAT (3)	100	RMEG-pica
Benzene	ND	3/88	TAT (3)	20	CREG
Benzo(a)anthra-cene	ND	3/88	TAT (3)	none	none-carcinogen
Benzo(a)pyrene	ND	3/88	TAT (3)	0.1	CREG
Beryllium	ND	3/88	TAT (3)	0.2	CREG
Bis(2-ethylhexyl)-phthalate	ND	3/88	TAT (3)	40	RMEG-pica
Bromodichloro-methane	ND	3/88	TAT (3)	10 40	CREG EMEG-pica
Cadmium	ND	3/88	TAT (3)	1.0	EMEG-pica
Calcium	1,200 - 13,500	3/88	TAT (3)	18,000	Western U.S. background
Chromium	ND - 993	3/88	TAT (3)	10 (for hexavalent chromium)	RMEG- pica
Chrysene	ND	3/88	TAT (3)	none	none-carcinogen
Cobalt	ND	3/88	TAT (3)	7.1	Western U.S. background
Copper	ND - 154	3/88	TAT (3)	21	Western U.S. background
Cyclohexane, 1- bromo-4-methyl	ND	3/88	TAT (3)	none	none
Cyclohexane, 1,2- dimethyl, trans	ND	3/88	TAT (3)	none	none
Cyclohexane, 1- ethyl-2-methyl, cis	ND	3/88	TAT (3)	none	none
Cyclohexane, 1- ethyl-4-methyl, trans	ND	3/88	TAT (3)	none	none
Cyclohexane, methyl	ND	3/88	TAT (3)	none	none
Cyclohexane, 1,1,3-trimethyl	ND	3/88	TAT (3)	none	none
Cyclohexane, 1,2,3-trimethyl	ND	3/88	TAT (3)	none	none
Cyclohexane, 1,2,3-trimethyl (1-alpha)	ND	3/88	TAT (3)	none	none
Cylopropane, 1- methyl-2- (methylp)	ND	3/88	TAT (3)	none	none
Dimethyl decane	ND	3/88	TAT (3)	none	none
Dimethyl heptane	ND	3/88	TAT (3)	none	none
Hexane,2,2-dimethyl	ND	3/88	TAT (3)	none	none
Hexanol,3-methyl	ND	3/88	TAT (3)	none	none
2-Hexanone	ND	3/88	TAT (3)	none	none
Iron	3,050 - 22,000	3/88	TAT (3)	21,000	Western U.S. background
Isoctanol	ND	3/88	TAT (3)	none	none
Lead	ND - 569	3/88	TAT (3)	17	Western U.S. background (carcinogen)
Magnesium	ND - 7,280	3/88	TAT (3)	7,800	Western U.S. background
Manganese	ND - 322	3/88	TAT (3)	300	RMEG-pica
Mercury	ND	3/88	TAT (3)	none	none
2- Methylnaphthalene	ND	3/88	TAT (3)	none	none
Naphthalene	ND	3/88	TAT (3)	none	none
Nickel	ND	3/88	TAT (3)	40	RMEG-pica</td>
N-nitrosodi- phenylamine	ND	3/88	TAT (3)	100	CREG
Oxirane,2-(1,1- dimethylethyl)-3 ethyl	ND	3/88	TAT (3)	none	none
Pentane, 2,3- dimethyl	ND	3/88	TAT (3)	none	none
1-Pentene, 2,3- dimethyl	ND	3/88	TAT (3)	none	none
Phenanthrene	ND	3/88	TAT (3)	none	none
Potassium	ND	3/88	TAT (3)	18,000	Western U.S. background
Selenium	ND	3/88	TAT (3)	4	EMEG-pica
Silver	ND - 71	3/88	TAT (3)	10	RMEG-pica
Sodium	ND - 19,900	3/88	TAT (3)	10,000	Western U.S. background
Trichloroethylene	ND	3/88	TAT (3)	60	CREG
Trichloropro-pylene	ND	3/88	TAT (3)	none	none
Trimethylpentane	ND	3/88	TAT (3)	none	none
Vanadium	ND	3/88	TAT (3)	none	none
Zinc	ND - 428	3/88	TAT (3)	600	RMEG-pica

Table C9. Range of Contaminant Concentrations and Radioactivity in Off-Site Soil Three sets of inorganic and organic chemical concentration values are listed for samples taken on: o Property A Note: Samples were analyzed for organic compounds but results are not in project files. o Residential yard north of Property A (1 sample) Note: Sample was analyzed for organic compounds but results are not in project files. o Deep Rock School property See note at end of table for discussion of radioactivity at Deep Rock School property, and on a resident's property located between Deep Rock Road and Property A. Radioactivity measurement results for many other off-site locations are included in Table 2 as "Background" information for comparison with on-site radioactivity levels.
Contaminant	Concentration Range - mg/kg	Sampling Date	Reference	Comparison Value
Contaminant	Concentration Range - mg/kg	Sampling Date	Reference	mg/kg	Source
Aluminum	55,241 - 28,027 11,932 NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	58,000	Western U.S. background
Antimony	ND - 11 ND ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	0.8	RMEG-pica
Arsenic	5.25 - 20.39 5.25 ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	0.6	CREG
Barium	92 - 791 164 39-133	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	100	RMEG-pica
Benzene	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	20	CREG
Benzo(a)anthra- cene	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Benzo(a)pyrene	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	0.1	CREG
Beryllium	1 - 27 ND NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	0.2	CREG
Bis(2-ethylhexyl)- phthalate	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	40	RMEG-pica
Bromodichloro- methane	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	10 40	CREG EMEG-pica
Cadmium	1 - 8 ND ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	1.0	EMEG-pica
Calcium	3,271 - 28,539 4,754 NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	18,000	Western U.S. background
Chromium	17 - 128 21 6-13	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	10 (for hexavalent chromium)	RMEG- pica
Chrysene	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none-carcinogen
Cobalt	ND - 15 ND NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	7.1	Western U.S. background
Copper	19 - 141 ND 3-14	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	21	Western U.S. background
Cyclohexane, 1- bromo-4-methyl	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Cyclohexane, 1,2- dimethyl, trans	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Cyclohexane, 1- ethyl-2-methyl, cis	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Cyclohexane, 1- ethyl-4-methyl, trans	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Cyclohexane, methyl	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Cyclohexane, 1,1,3-trimethyl	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Cyclohexane, 1,2,3-trimethyl	ND NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Cyclohexane, 1,2,3-trimethyl (1- alpha)	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Cylopropane, 1- methyl-2- (methylp)	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Dimethyldecane	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Dimethylheptane	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Hexane, 2,2- dimethyl	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Hexanol, 3-methyl	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
2-Hexanone	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Iron	13,717 - 32,801 14,547 NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	21,000	Western U.S. background
Isoctanol	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Lead	74 - 2,564 107 4-40	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	17	Western U.S. background (carcinogen)
Magnesium	1,315 - 7,097 1,892 NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	7,800	Western U.S. background
	213 - 746 406 NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	300	RMEG-pica
Mercury	ND - 0.185 0.626 ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none
2- Methylnaphthalene	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Naphthalene	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Nickel	12 - 36 ND 3-7	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	40	RMEG-pica
N-nitrosodi- phenylamine	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	100	CREG
Oxirane,2-(1,1- dimethylethyl)-3 ethyl	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Pentane, 2,3- dimethyl	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
1-Pentene, 2,3- dimethyl	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Phenanthrene	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Potassium	964 - 2,720 1,774 NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	18,000	Western U.S. background
Selenium	NI ND ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	4	EMEG-pica
Silver	2 - 4 ND ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	10	RMEG-pica
Sodium	183 - 363 ND ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	10,000	Western U.S. background
Thallium	ND - 1 ND ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Trichloroethylene	NI NI ND	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	60	CREG
Trichloropro- pylene	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Trimethylpentane	NI NI NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Vanadium	19 - 40 ND NA	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	none	none
Zinc	108 - 914 ND 11 - 52	3/88 3/88 6/95	TAT (3) TAT (3) ODEQ (32)	600	RMEG-pica
Note: Field radioactivity measurements on Deep Rock School grounds were between 10 and 15 micro R per hour (background measurements were about 10 micro R per hour [ODEQ (32)]. For samples from a resident's property located south of Property A and north of Deep Rock Road, A, laboratory analytical results showed U-238, U-235, and Th-232, were less than the minimum detection limit. Ra-226 exceeded the minimum detection limit for only one of 5 samples analyzed and was found in that sample to be 2.6 picoCuries per gram [KM (40)]. Alpha and beta activity on that property did not exceed 17 and 21 pC/g, respectively [ODEQ (39)]. Data for other off-site locations (Table C2) have shown radioactivity to be at generally expected background levels.

Table C10. Range of Contaminant Concentrations in Off-site Sediment Samples Note: Samples represented as follows: o Skull Creek and tributaries, upstream and downstream of site o Skull Creek and tributaries, downstream of site near Property A o Property A, drainages and pond o Skull Creek and tributary, downstream of site between Deep Rock Road and Property A. See note at end of table for discussion about organic contaminants.
Contaminant	Concentration Range - mg/kg	Sampling Date	Reference	Comparison Value
Contaminant	Concentration Range - mg/kg	Sampling Date	Reference	mg/kg	Source
Aluminum	340 - 9,130 9,812 - 11,267 5,807 - 19,125 2,430 - 3,040	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	58,000	Western U.S. background
Antimony	RD ND ND 0.56 - 1.1	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	0.8	RMEG-pica
Arsenic	ND - 7.4 8.3 - 22.9 6.34 - 23.85 ND - 9.9	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	0.6	CREG
Barium	ND - RD 205 - 236 269 - 3,641 72 - 168	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	100	RMEG-pica
Benzene	ND DU DU	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	20	CREG
Benzo(a)anthra- cene	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none-carcinogen
Benzo(a)pyrene	ND - 1.5 ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	0.1	CREG
Beryllium	ND 2 2 - 4 0.32 - 0.39	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	0.2	CREG
Bis(2-ethylhexyl)- phthalate	ND - RD ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	40	RMEG-pica
Bromodichloro- methane	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	10 40	CREG EMEG-pica
Cadmium	ND ND ND 0.3 - 1	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	1.0	EMEG-pica
Calcium	5,750 - 16,700 7, 186 - 11,902 2,770 - 8,677 2,400 - 5010	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	18,000	Western U.S. background
Chromium	17 - 28 98 - 117 156 - 4,186 5.4 - 47	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	10 (for hexavalent chromium)	RMEG- pica
Chrysene	ND - RD ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none-carcinogen
Cobalt	ND - 37 8 3 - 9 2.8 - 5.5	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	7.1	Western U.S. background
Copper	14 - 15 42 - 50 57 - 651 12 - 32	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	21	Western U.S. background
Cyclohexane, 1- bromo-4-methyl	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Cyclohexane, 1,2- dimethyl, trans	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Cyclohexane, 1- ethyl-2-methyl, cis	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Cyclohexane, 1- ethyl,l-4-methyl, trans	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Cyclohexane, methyl	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Cyclohexane, 1,1,3-trimethyl	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Cyclohexane, 1,2,3-trimethyl	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Cyclohexane, 1,2,3-trimethyl (1- alpha)	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Cylopropane, 1- methyl-2- (methylp)	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Dimethyldecane	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Dimethylheptane	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Hexane, 2,2- dimethyl	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Hexanol, 3-methyl	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
2-Hexanone	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Iron	10,000 - 21,200 17,745 - 22,185 21,690 - 32,502 832 - 17,900	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	21,000	Western U.S. background
Isoctanol	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Lead	18 - 60 165 - 277 129 - 1,839 92 - 634	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	17	Western U.S. background (carcinogen)
Magnesium	3,150 - 4,210 2,209 - 3,602 1,516 - 3,493 832 - 1,020	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	7,800	Western U.S. background
Manganese	RD - 922 602 - 856 132 - 255 101 - 588	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	300	RMEG-pica
Mercury	ND 0.16 - 0.21 0.3 - 4.441 0.06 - 0.11	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	none	none
2- Methylnaphthalene	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Naphthalene	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Nickel	ND 14 - 15 21 - 25	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	40	RMEG-pica
N-nitrosodi- phenylamine	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	100	CREG
Oxirane, 2-(1,1- dimethylethyl)-3 ethyl	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Pentane, 2,3- dimethyl	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
1-Pentene, 2,3- dimethyl	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Phenanthrene	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Potassium	RD 1,337 - 1,490 721 - 2,480 308 - 385	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	18,000	Western U.S. background
Selenium	RD ND ND ND	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	4	EMEG-pica
Silver	ND ND - 2 3 - 4 ND	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	10	RMEG-pica
Sodium	RD 339 - 399 156 - 695 108 - 131	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	10,000	Western U.S. background
Trichloroethylene	ND DU ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	60	CREG
Trichloropro- pylene	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Trimethylpentane	ND ND ND	5-86 3-88 3-88	FIT (1) TAT (3) TAT (3)	none	none
Vanadium	ND - RD 25 - 29 23 - 37 10 - 13	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	none	none
Zinc	57 - 109 148 - 222 165 - 1,516 35 - 100	5-86 3-88 3-88 12-95	FIT (1) TAT (3) TAT (3) SLO (37), ODEQ (39)	600	RMEG-pica
Note: Analyses of two samples (each split) of sediment taken in 1995 from Skull Creek and a tributary downstream from the site, between Deep Rock Road and Property A detected 23 of the common organic compounds. A few of those detected were VOCs; most were SVOCs. ATSDR comparison values are available for 15 of the compounds; none exceeded a comparison value. Eleven of the 15 were present at less than 10 ppm. The maximum concentration for the other four was 44 ppm. Eight compounds detected have no ATSDR comparison value. Those include benzo(a)anthracene, benzo(b)fluoranthene, benzo(ghi)perylene, carbazole, chrysene, dibenzo(ah)anthracene, 2-methylnaphthalene, and phenanthrene. The highest concentrations were for 2-methylnaphthalene (35 ppm) and phenanthrene (89 ppm). The others were less than 20 ppm.

Table C11. Radioactivity in Off-Site Sediments
Measurement or Isotope	Sediment Range pCi/g	Sampling Date	Reference
Radium-226	0.6 to 1.2	5/86	FIT (1)
Radium-228	0.7 to 1.0	5/86	FIT (1)
Uranium-233,234	.31 to.36	5/86	FIT (1)
Uranium-235	-.02 to .01	5/86	FIT (1)
Uranium-238	.26 to .41	5/86	FIT (1)
Thorium-232	.40 to 1.1	5/86	FIT (1)
Thorium-230	.49 to 1.2	5/86	FIT (1)
Thorium-228	.30 to 1.2	5/86	FIT (1)
Thorium-227	-.01 to 0.0	5/86	FIT (1)
Lead-210	1.6 to 1.7	5/86	FIT (1)
Polonium-210	.45 to 0.8	5/86	FIT (1)
Note: In 1994, analyses of Skull Creek sediment south of Property A showed U-238, U-35, Th-232, Ra-226, gross alpha, gross beta, and gamma radiation to be at area background levels [KM (40)] [ODEQ (39)]