ni ted States .Environmental Protection Agency Region 6
1445 Ross Avenue, Suite 1200 Dallas, Texas 75202-2733
October 25, 2017
Pawhuska Public Schools ATTN: Dr. Janet Neufeld, Superintendent 1801 McKenzie Pawhuska, OK 74056
via Email
Dear Dr. Neufeld,
Following the Pawhuska High School Emergency Response assessment of the vapor intrusion that was reported on August 14, 2017, the Osage Mineral Council completed a plug and abandonment (P&A) of the well in the softball field on September 13, 2017. On September 22, 2017, officials with the Pawhuska Eligh School reported to the workgroup that it continued to observe vapor seepage in the softball field and that there were concerns regarding the risk for the students playing softball in the field around the area where the flow-back pit was located during the P&A. On the September 22, 2017 stakeholders call, it was agreed that a 60-day air monitoring assessment would be conducted by the school with support from the Oklahoma Corporation Commission (QCC). Additionally, OCC requested EPA conduct surface soil sampling on the softball field to assure the P&A activities did not contaminate the soil.
EPA mobilized resources and collected samples of the softball field surface soil on October 2, 2017. The field was gridded into 40 foot by 40 foot sections, and seven samples were collected; each a 5-point composite (5 grab samples were collected and composited into one sample). Three samples and a duplicate were collected from the former flow-back pit location (grid C3 on the attached figure). Three samples were collected from background locations to include near home plate (grid Al), left field (grid B5), and southeast of the centerfield fence line (grid E6). All samples were collected from 0 to 3 inches below ground surface.
Samples were shipped to TestAmerica located in Phoenix, AZ and analyzed for total metals (Method 6010B/6020A), mercury (Method 7471B), volatile organic compounds (VOC's / method 8260B), semi volatile organic compounds (SVOC's / Method 8270C and 8270D), and total petroleum hydrocarbons (TPH / Method TX 1005). Preliminary results were received on October 6, 2017 and compared to EPA Regional Screening Levels1(RSL's). TPH results were compared to the Oklahoma Department of Environmental Quality (ODEQ) Guidance for Risk-based Levels of TPH (October 2012). Arsenic was the only analyte exceeding its RSL. TPH results were not detected.
'' U.S. EPA Regional Screening Levels arc available at the following website: AllT52iA&A221M;.2.22i3l2k:LN2iAR2l:iSC!"e e |lln g "|e \;e |s - ts ls .
Sierra Club v. EPA 18cv3472 NDCA
Tiers 8&9
ED 002061 00177609-00001
Arsenic was detected in all six samples at a concentration range from 1.9 milligrams per kilograms (mg/kg) to 10 mg/kg. EPA Toxicology reports that the arsenic concentration range is consistent with the arsenic background levels in Oklahoma soil2, which has a median concentration of 3.96 mg/kg and a range of 0.75 mg/kg to 33.6 mg/kg. In addition, the arsenic soil concentrations are within the target lifetime excess cancer risk range (0.68 mg/kg to 68 mg/kg) and are below the noncancer level (35 mg/kg). Therefore, the soils at the Pawhuska High School softball field are unlikely to pose a health risk.
Attached please find a Summary table of the soil sample analytical results and a figure showing the gridded softball field. If you have any questions, please don't hesitate.
Best Regards,
Adam Adams, OSC US EPA, Region 6
cc: Oklahoma Energy and Environment, Secretary Mike Teague Oklahoma Water Resources Board (OWRB), Kent Wilkins Oklahoma Corporation Commission (OCC), Tim Baker Oklahoma State Fire Marshall, David Vanbuskirk Bureau of Indian Affairs (BIA), Eddie Streater Osage Nation, Chief Bobby Tallchief Osage Mineral Council, William Lynn CDC / ATSDR Oklahoma Department of Health, Kristy B.
attachments
1 Oklahoma soil data reported in the Oklahoma State University Division of Agriculture Sciences and Natural Resources Oklahoma Cooperative Extension Service publication "Background Metal Concentrations in Oklahoma Soils" (2014), shows naturally occurring elevated levels of arsenic in Osage County and throughout Oklahoma, consistent with the EPA Team's findings.
Sierra Club v. EPA 18cv3472 NDCA
2 Tiers 8&9
ED 002061 00177609-00002
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LEGEND
A EXTERIOR MONITORING LOCATION
1 = 3 RECIRCULATION PIT
j-- 1 SAMPLE GRID I" 1 SAMPLE COLLECTED
Sierra ,C1UFv7EPA18v3477NPCA"
5US EPA REGION 6
M
SAMPLE GRID MAP
I
PAWHUSKA HS ER
621 E 15TH ST,
100 PAWHUSKA, OSAGE COUNTY, OKLAHOMA =]
SCALE IN FEET
DATE
PROJECT NO
OCTOBER 2017
N/A
SCALE AS SHOWN
Tiirs'SS?"" FILE: D:\GIS\Projects\START\Pawhuska_HS\mxd\FIGURE 1 - SAMPLE GRID.mxd 12:59:01 PM 10/6/2017 baye
ED 002061 00177609-00003
Table 1 Soil Analytical Results Pawhuska High School ER
EPA Region 6
\ruihU-
( AS.NO l uhi
6020A Metals (ICP/MS)
Aluminum
7429-90-5 mg/Kg
Antimony
7440-36-0 mg/Kg
Arsenic
7440-38-2 mg/Kg
Barium
7440-39-3 mg/Kg
Beryllium
7440-41-7 mg/Kg
Cadmium
7440-43-9 mg/Kg
Calcium
7440-70-2 mg/Kg
Chromium
7440-47-3 mg/Kg
Cobalt
7440-48-4 mg/Kg
Copper
7440-50-8 mg/Kg
Iron
7439-89-6 mg/Kg
Lead Magnesium
7439-92-1 mg/Kg 7 4 3 9 -95-4 mg/Kg
Manganese
7439-96-5 mg/Kg
Nickel
7440-02-0 mg/Kg
Potassium
7440-09-7 mg/Kg
Selenium
7782-49-2 mg/Kg
Silver
7440-22-4 mg/Kg
Sodium
7440-23-5 mg/Kg
Thallium
7440-28-0 mg/Kg
Vanadium
7440-62-2 mg/Kg
Zinc
7440-66-6 mg/Kg
7471B M ercury (CVAA)
Mercury
7 4 3 9 -97-6 mg/Kg
8260B Volatile Organic Compounds (GC/MS)
1,1,1 -Trichloroethane
71-55-6 mg/Kg
1,1,2,2-Tetrachloroethane
79-34-5 mg/Kg
1,1,2-Trichloro-1,2,2-trifluoroethane 76-13-1 mg/Kg
1,1,2-T richloroethane
79-00-5 mg/Kg
1,1 -Dichloroethane
75-34-3 mg/Kg
1,1 -Dichloroethene
75-35-4 mg/Kg
1,2,3-Trichlorobenzene
87-61-6 mg/Kg
1,2,4-Trichlorobenzene
120-82-1 mg/Kg
1,2-Dibromo-3 -chloropropane
96-12-8 mg/Kg
1,2-Dibromoethane
106-93-4 mg/Kg
1,2-Dichlorobenzene
95-50-1 mg/Kg
1,2-Dichloroethane
107-06-2 mg/Kg
1,2-Dichloropropane
78-87-5 mg/Kg
1,3-Dichlorobenzene
541-73-1 mg/Kg
Sum mur> Resident Soil IRSI.) TIIQ=I.O
77000 31
0.68
15000 160 71 N/P N/P 23 3100
55000 400 N/P 1800 1500 N/P 390 390 N/P 0.78 390 23000
11
8100
0.6
6700
1.1
3.6 230 63 24 0.0053 0.036 1800 0.46 0.28 N/P
IMIS-\I !'! i's- \ I-Ui-1" 1002-01-51
0-3 inches 10-2 2017 PieId Sample
PIIS-B5 l,H'>-K?-iM-rilMI2-OI-5l
0-3 inches 1022017 Meld Sample
3800 JK 0.22 UJL
1.9 JL 59
0.26 JQ 0.22 U 9000 JK
3.6 1.6 JL 2.3 JL 5000 JK
3.9 830 110 JK 4.3 490 0.26 JQL 0.11U 65 0.22 U 8.4 JK 7.1 JL
8500 JK 0.57 UBJL
10 JL 150 0.63 0.24 U 2700 JK 11 2.9 JL 7 JL 12000 JK 14 1300 170 JK 8.6 1300 0.62 JL 0.12 U 46 JQ 0.24 U 22 JK 27 JL
0.033 U
0.052 JQ
0.001 U 0.0011 U 0.00049 U 0.0015 U 0.00073 U 0.00062 U 0.00042 U 0.00073 U 0.00077 U 0.0011 U 0.00037 U 0.00073 U 0.001 U 0.00073 U
0.0018 U 0.002 U 0.0009 U 0.0028 U 0.0013 U 0.0011 U 0.00076 U 0.0013 U 0.0014 U 0.002 U 0.00068 U 0.0013 U 0.0019 U 0.0013 U
PIIS-3 !*iis.-i a-oj-i"ioo:-oi-5i
0-3 inches 10 2 201" Field Sample
11000 0.34 UB
3.6 270 0.75 0.22 U 2800 14 5.7 6.1 16000 16 1600 320 13 1000 0.6 0.11 u 270 0.22 U 24 15
0.055 JQL
0.00086 U 0.00094 U 0.00042 U 0.0013 U 0.00063 U 0.00054 U 0.00036 U 0.00063 U 0.00066 U 0.00094 U 0.00032 U 0.00063 U 0.00088 U 0.00063 U
PIIS-C3 I'llviVMB.riflfl' fl' M
0-3 ir!ehes 10 2 201" Field Sample
PIIS-C3 rns.f 3-IU-1-1IMI2-IU-5I
0-3 inches 102201" Field Sample
10000 0.37 UB
5.2 200 0.78 0.21 U 4900 15 5.1 5.7 16000 16 1500 340 12 1100 0.6 0.11U 240 0.21 U 28 18
8100 0.37 UB
5.5 210
1 0.22 U 2400
11 4.8 7.3 19000 16 1300 270 JK 16 720 0.54 0.11 u 250 0.22 U 28 15
0.091 JQL
0.054 JQL
0.0011 u 0.0012 U 0.00053 U 0.0016 U 0.00079 U 0.00067 U 0.00045 U 0.00079 U 0.00082 U 0.0012 U 0.0004 U 0.00079 U 0.0011 U 0.00079 U
0.00083 U 0.00091 U 0.00041 U 0.0013 U 0.00061 U 0.00052 U 0.00034 U 0.00061 U 0.00063 U 0.00091 U 0.00031 U 0.00061 U 0.00085 U 0.00061 U
PIIS-C3 i'MS'-* j.o.? rioo: n.?..?2
0-3 inches 10 2 201" Field Duplicale
PIIS-F.it nivKh-oj-riooMn-fi
0-3 inches 10 2 201" Field Sample
8400 0.37 UB
4.7 190 0.79 0.22 U 2700 14 6.2 6.1 18000 17 1300 790 JK 14 730 0.52 JQ 0.11 U 230 0.22 U 27 13
6800 JK 0.42 UBJL
4 JL 160 0.64 0.26 U 2800 JK 11 3.6 JL 5.9 JL 12000 JK 19 1200 200 JK 9.4 1200 0.61 JQL 0.13 U 79 0.26 U 23 JK 25 JL
0.056 JQL
0.056 JQ
0.0013 U 0.0014 U 0.00063 U 0.002 U 0.00094 U 0.0008 U 0.00054 U 0.00094 U 0.00099 U 0.0014 U 0.00048 U 0.00094 U 0.0013 U 0.00094 U
0.0017 U 0.074 U 0.00083 U 0.0026 U 0.0012 U 0.0011 U 0.028 U 0.051 U 0.052 U 0.0018 U 0.025 U 0.0012 U 0.0017 U 0.051 U
^
US EP A REGION 6
Sierra Club v. EPA 18cv3472 NDCA
1 of 5 Tiers 8&9
20600.012.001.1055.01 ED 002061 00177609-00004
Table 1 Soil Analytical Results Pawhuska High School ER
EPA Region 6
Snmmnrs
Resident
Soil (RSI.)
Gsahte
CAS.NO l nil, TIIQ=I.O
1,4-Dichlorobenzene
106-46-7 mg/Kg
.: =
2-Butanone
78-93-3 mg/Kg 27000
2-Hexanone
591-78-6 mg/Kg 200
4-Methyl-2-pentanone
108-10-1 mg/Kg 33000
Acetone
67-64-1 mg/Kg 61000
Benzene
71-43-2 mg/Kg
1.2
Bromochloromethane
74-97-5 mg/Kg
150
Brom odichloromethane
75-27-4 mg/Kg 0.29
Bromoform
75-25-2 mg/Kg
19
Bromomethane
74-83-9 mg/Kg
6.8
Carbon disulfide
75-15-0 mg/Kg 770
Carbon tetrachloride
56-23-5 mg/Kg 0.65
Chlorobenzene
108-90-7 mg/Kg 280
Chloroethane
75-00-3 mg/Kg 14000
Chloroform
67-66-3 mg/Kg 0.32
Chloromethane
74-87-3 mg/Kg
110
cis-1,2-Dichloroethene
156-59-2 mg/Kg
160
cis-1,3-Dichloropropene
10061-01-5 mg/Kg N/P
Cyclohexane
110-82-7 mg/Kg 6500
Dibromochloromethane
124-48-1 mg/Kg
8.3
Dichlorodifluoromethane
75-71-8 mg/Kg
87
Ethylbenzene
100-41-4 mg/Kg
5.8
Isopropylbenzene
98-82-8 mg/Kg 1900
Methyl Acetate
79-20-9 mg/Kg 78000
Methyl tert-butyl ether
1634-04-4 mg/Kg
47
Methylcyclohexane
108-87-2 mg/Kg N/P
Methylene chloride
75-09-2 mg/Kg
57
Styrene
100-42-5 mg/Kg 6000
Tetrachloroethene
127-18-4 mg/Kg
24
Toluene
108-88-3 mg/Kg 4900
trans-1,2 -Dichloroethene
156-60-5 mg/Kg 1600
trans-1,3-Dichloropropene
10061-02-6 mg/Kg N/P
Trichloroethene
79-01-6 mg/Kg 0.94
Trichlorofluoromethane
75-69-4 mg/Kg 23000
Vinyl chloride
75-01-4 mg/Kg 0.059
Xylene (total)
1330-20-7 mg/Kg 580
8270C SIM Semivolatile Organic Compounds (GC/MS) SI
1-Methylnaphthalene
90-12-0 mg/Kg
18
2-Methylnaphthalene
91-57-6 mg/Kg 240
Acenaphthene
83-32-9 mg/Kg 3600
IM IS-\1 I'liv u-iM-ri2.iu.5i
0-3 indie 10-2 2017 Field Sample
L 0.0056 U 0.018 U 0.0021 U 0.028 JQ 0.00073 U 0.0006 U 0.0006 U 0.0006 U 0.0013 U 0.0039 U 0.00073 U 0.00073 U 0.0021 U 0.00073 U 0.00073 U 0.00073 U 0.00073 U 0.00036 U 0.00037 U 0.0011 U 0.00073 U 0.00045 U 0.0058 UJK 0.0011 U 0.00048 U 0.0014 UB 0.0012 U 0.0008 U 0.00081 U 0.00073 U 0.00073 U 0.0011 U 0.0011 U 0.0012 U 0.0013 U
0.002 U 0.0023 U 0.0024 U
IMIS-B5 !>Mv.|{?..iU-r HMI2-1-51
0-3 inches 1022017 field Sample huh!.: f
0.01 U 0.034 U 0.0038 U 0.08 UB 0.0013 U 0.0011 U 0.0011 U 0.0011 U 0.0024 U 0.0072 U 0.0013 U 0.0013 U 0.0038 U 0.0013 U 0.0013 U 0.0013 U 0.0013 U 0.00066 U 0.00068 U 0.002 U 0.0013 U 0.00082 U 0.011 UJK 0.0019 U 0.00088 U 0.0017 U 0.0022 U 0.0015 U 0.0015 U 0.0013 U 0.0013 U 0.0019 U 0.002 U 0.0022 U 0.0025 U
PI1S-C 3 niv-o-oj-riooM n-fi
0-3 inches 10 2 201" Field Sample `i.i'UiH.: ! 0.0048 U 0.016 U 0.0018 U
0.06 0.00073 JQ 0.00052 U 0.00052 U 0.00052 U
0.0011 U 0.0034 U 0.00063 U 0.00063 U 0.0018 U 0.00063 U 0.00063 U 0.00063 U 0.00063 U 0.00083 JQ 0.00032 U 0.00094 U 0.00063 U 0.00039 U 0.005 UJK 0.0009 U 0.00041 U 0.002 UB 0.001 U 0.00069 U 0.0007 U 0.00063 U 0.00063 U 0.0009 U 0.00094 U 0.001 U 0.0012 JQ
0.012 U 0.014 U 0.014 U
0.002 U 0.0023 U 0.0024 U
IMIS-C3 I'llviVMB.rtflfl' fl' M
0-3 ir!ehes 10 2 201" Field Sample h huu-v i
0.006 U 0.02 U 0.0022 U 0.069 0.0015 JQ 0.00065 U 0.00065 U 0.00065 U 0.0014 U 0.0042 U 0.00079 U 0.00079 U 0.0022 U 0.00079 U 0.00079 U 0.00079 U 0.00079 U 0.00039 U 0.0004 U 0.0012 U 0.00079 U 0.00048 U 0.0062 UJK 0.0011 U 0.00053 JQ 0.0026 UB 0.0013 U 0.00086 U 0.0011 JQ 0.00079 U 0.00079 U 0.0011 U 0.0012 U 0.0013 U 0.0014 U
PIIS-C3 ruse .?-iu-rnMi2-iu-5i
0-3 inches 102201" Field Sample iHiniiM L 0.0046 U 0.015 U 0.0017 U 0.048 UB 0.00061 U 0.0005 U 0.0005 U 0.0005 U 0.0011 U 0.0033 U 0.00061 U 0.00061 U 0.0017 U 0.00061 U 0.00061 U 0.00061 U 0.00061 U 0.0003 U 0.00031 U 0.00091 U 0.00061 U 0.00037 U 0.0048 UJK 0.00087 U 0.0004 U 0.00078 U 0.001 U 0.00066 U 0.00067 U 0.00061 U 0.00061 U 0.00087 U 0.00091 U 0.001 U 0.0011 U
0.002 U 0.0024 U 0.0025 U
0.002 U 0.0023 U 0.0024 U
IMIS-t 3 t'lps-i a o.? rioo: n.?..?2
0-3 inches HI 2 201" Field Duplicate fin d l_ 0.0072 U 0.024 U 0.0027 U
0.11 0.0013 JQ 0.00078 U 0.00078 U 0.00078 U 0.0017 U 0.0051 U 0.00094 U 0.00094 U 0.0027 U 0.00094 U 0.00094 U 0.00094 U 0.00094 U 0.00047 U 0.00048 U 0.0014 U 0.00094 U 0.00058 U 0.0075 UJK 0.0014 U 0.00062 U 0.0045 UB 0.0016 U
0.001 U 0.001 U 0.00094 U 0.00094 U 0.0014 U 0.0014 U 0.0016 U 0.0017 U
IMIS-F.it iM iM M urinoAom
0-3 inches 10 2 201" Field Sample
nn" !
0.021 JQ 0.031 U 0.0035 U 0.29 0.0041 0.001 u 0.001 u 0.001 u 0.0022 U 0.0066 U 0.0012 U 0.0012 U 0.0035 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.00061 U 0.00063 U 0.0018 U 0.0012 U 0.00076 U 0.0098 UJK 0.0018 U 0.00081 U 0.0043 UB 0.002 U 0.0013 U 0.0025 JQ 0.0012 U 0.0012 U 0.0018 U 0.0018 U 0.002 U 0.0023 U
0.002 U 0.0023 U 0.0024 U
0.011 U 0.013 U 0.014 U
^
US EP A REGION 6
Sierra Club v. EPA 18cv3472 NDCA
2 of 5 Tiers 8&9
20600.012.001.1055.01 ED 002061 00177609-00005
Table 1 Soil Analytical Results Pawhuska High School ER
EPA Region 6
Gsahte
CAS.NO l nil,
Acenaphthylene
208-96-8 mg/Kg
Anthracene
120-12-7 mg/Kg
Benzo(a)anthracene
56-55-3 mg/Kg
Benzo(a)pyrene
50-32-8 mg/Kg
Benzo(b)fluoranthene
205-99-2 mg/Kg
Benzo(g,h,i)perylene
191-24-2 mg/Kg
Benzo(k)fluoranthene
207-08-9 mg/Kg
Chrysene
218-01-9 mg/Kg
Dibenzo(a,h)anthracene
53-70-3 mg/Kg
Fluoranthene
206-44-0 mg/Kg
Fluorene
86-73-7 mg/Kg
Indeno(l ,2,3-cd)pyrene
193-39-5 mg/Kg
Naphthalene
91-20-3 mg/Kg
Phenanthrene
85-01-8 mg/Kg
Pyrene
129-00-0 mg/Kg
8270D Semivolatile Organic Compounds (GC/MS)
1,1'-Biphenyl
92-52-4 mg/Kg
1,2,4,5-T etrachlorobenzene
95-94-3 mg/Kg
1,2,4-T richlorobenzene
120-82-1 mg/Kg
1,2 -Dichlorobenzene
95-50-1 mg/Kg
1,3 -Dichlorobenzene
541-73-1 mg/Kg
1,4-Dichlorobenzene
106-46-7 mg/Kg
2,2'-Oxybis(l -chloropropane)
108-60-1 mg/Kg
2,3,4,6-T etrachlorophenol
58-90-2 mg/Kg
2,4,5-Trichlorophenol
95-95-4 mg/Kg
2,4,6-Trichlorophenol
88-06-2 mg/Kg
2,4-Dichlorophenol
120-83-2 mg/Kg
2,4-Dimethylphenol
105-67-9 mg/Kg
2,4-Dinitrophenol
51-28-5 mg/Kg
2,4-Dinitrotoluene
121-14-2 mg/Kg
2,6-Dinitrotoluene
606-20-2 mg/Kg
2-Chloronaphthalene
91-58-7 mg/Kg
2-Chlorophenol
95-57-8 mg/Kg
2-Methylnaphthalene
91-57-6 mg/Kg
2-Methylphenol
95-48-7 mg/Kg
2-Nitro aniline
88-74-4 mg/Kg
2-Nitrophenol
88-75-5 mg/Kg
3 & 4 Methylphenol
15831-10-4 mg/Kg
3,3 '-Dichlorobenzidine
91-94-1 mg/Kg
3-Nitro aniline
99-09-2 mg/Kg
Siimmarv Resident Soil (RSI.) t u g - i.o
\ !> 18000
1.1 0.11 1.1 N/P 11 110 0.11 2400 2400 1.1 3.8 N/P 1800
47 23 24 1800 N/P 2.6 3100 1900 6300 49 190 1300 130 1.7 0.36 4800 390 240 3200 630 N/P N/P 1.2 N/P
IMIS-\i n s - M-ti.i-rioo2.in.5t
0-3 indie !0'2 2017 Field Sample
0.0014 U 0.0013 U 0.0014 U 0.003 JQ 0.0015 U 0.002 U 0.0013 U 0.0016 U 0.0015 U 0.0038 U 0.0017 U 0.0024 U 0.0019 U 0.0016 U
0.19 U 0.17 U 0.18 U 0.19 U 0.19 U 0.19 U 0.2 U 0.18 U 0.22 U 0.19 U 0.17 U 0.33 U 0.25 U 0.21 U 0.22 U 0.21 U 0.19 U 0.026 U 0.21 U 0.2 U 0.24 U 0.2 U 0.2 U 0.23 U
IMIS-B5 !>Mv.|{?-iU-r 1-51
0-3 inches 102 2017 Field Sample ".h i: l 0.0085 U 0.018 JQ 0.014 JQ
0.051 0.0092 U 0.015 JQ
0.034 0.0099 U
0.054 0.023 U 0.011 U 0.014 U 0.016 JQ 0.041
1MIS-C 3 nti'-. i a -o j.rio o A o m
0-3 inches 10 2 201" Field Sample
L 0.0014 U 0.0032 JQ 0.0041 0.0065 0.0018 JQ 0.0025 JQ 0.0046 0.0017 U 0.0061 0.0039 U 0.0018 U 0.0024 U 0.0048
0.008
0.19 U 0.17 U 0.18 U 0.19 U 0.19 U 0.2 U 0.2 U 0.18 U 0.22 U 0.19 U 0.17 U 0.33 U 0.25 U 0.21 U 0.22 U 0.21 U 0.19 U 0.026 U 0.22 U 0.21 U 0.24 U 0.2 U 0.2 U 0.23 U
0.19 U 0.17 U 0.18 U 0.19 U 0.19 U 0.2 U 0.2 U 0.18 U 0.22 U 0.19 U 0.17 U 0.33 U 0.25 U 0.21 U 0.22 U 0.21 U 0.19 U 0.026 U 0.22 U 0.21 U 0.24 U 0.2 U 0.2 U 0.23 U
IMIS-C3 n ivr.viw -rioo'-'-5i
0-3 ir!ehes 10 2 201" Field Sample =! !!.: I. 0.0015 U 0.0013 U 0.0015 U 0.0025 U 0.0016 U 0.002 U 0.0013 U 0.0017 U 0.0016 U 0.0039 U 0.0018 U 0.0025 U 0.0019 U 0.0017 U
PIIS-C3 rnsc .?-n.?-riiMt2-iu-5i
0-3 inches 102201" Field Sample ".ii": i. 0.0014 u 0.0013 JQ 0.0016 JQ 0.0029 JQ 0.0015 U 0.002 U 0.0015 JQ 0.0017 U 0.0021 JQ 0.0039 U 0.0018 U 0.0024 U 0.0019 U 0.0027 JQ
0.19 U 0.17 U 0.18 U 0.19 U 0.19 U 0.2 U 0.2 U 0.18 U 0.22 U 0.19 U 0.17 U 0.33 U 0.25 U 0.21 U 0.22 U 0.21 U 0.19 U 0.026 U 0.22 U 0.21 U 0.24 U 0.2 U 0.2 U 0.23 U
0.19 U 0.17 U 0.18 U 0.19 U 0.19 U 0.19 U 0.2 U 0.18 U 0.22 U 0.19 U 0.17 U 0.33 U 0.25 U 0.21 U 0.22 U 0.21 U 0.19 U 0.026 U 0.21 U 0.2 U 0.24 U 0.2 U 0.2 U 0.23 U
IMIS-C 3 iMfs-i j.iu.riooMM-?:
0-3 inches 10 2 201" Field implicate ".i".' L 0.0014 U 0.0016 JQ 0.002 JQ 0.0037 0.0015 U 0.002 U 0.0028 JQ 0.0016 U 0.0024 JQ 0.0038 U 0.0017 U 0.0024 U 0.0019 U 0.0031 JQ
IMIS-Fit iM iM M urinoA om
0-3 inches 10 2 201" Field Sample ""1 1 I 0.0082 U 0.0075 U 0.0082 U 0.018 JQ 0.0088 U 0.011 U 0.0093 JQ 0.0094 U 0.01 JQ 0.022 U
0.01 U 0.014 U 0.011 U 0.0098 JQ
0.19 U 0.17 U 0.18 U 0.19 U 0.19 U 0.2 U 0.2 U 0.18 U 0.22 U 0.19 U 0.17 U 0.33 U 0.25 U 0.21 U 0.22 U 0.21 U 0.19 U 0.026 U 0.22 U 0.21 U 0.24 U 0.2 U 0.2 U 0.23 U
0.19 U 0.17 U 0.18 U 0.19 U 0.19 U 0.19 U 0.2 U 0.18 U 0.22 U 0.19 U 0.17 U 0.33 U 0.25 U 0.21 U 0.22 U 0.21 U 0.19 U 0.026 U 0.21 U 0.21 U 0.24 U 0.2 U 0.2 U 0.23 U
^ US EPA REGION 6 Sierra Club v. EPA 18cv3472 NDCA
3 of 5 Tiers 8&9
20600.012.001.1055.01 ED 002061 00177609-00006
\rs;il>U4,6-Dinitro-2 -methylphenol 4-Bromophenyl-phenyiether 4-Chloro-3-methylphenol 4-Chloroaniline 4-Chlorophenyl -phenylether 4-Nitroaniline 4-Nitrophenol Acenaphthene Acenaphthylene Acetophenone Anthracene Atrazine Benzaldehyde Benzidine Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzyl alcohol Bis(2-chloroethoxy)methane Bis(2-chloroethyl)ether Bis(2-ethylhexyl)phthalate Butylbenzylphthalate Caprolactam Carbazole Chrysene Dibenzo(a,h)anthracene Dibenzofuran Diethylphthalate Dimethylphthalate Di-n-butylphthalate Di-n-octylphthalate Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclopentadiene Hexachloroethane Indeno( 1,2,3 -cd)pyrene
^
US EPA REGION 6
Sierra Club v. EPA 18cv3472 NDCA
CAS.NO l nil, 534-52-1 mg/Kg 101-55-3 mg/Kg 59-50-7 mg/Kg 106-47-8 mg/Kg 7005-72-3 mg/Kg 100-01-6 mg/Kg 100-02-7 mg/Kg 83-32-9 mg/Kg 208-96-8 mg/Kg 98-86-2 mg/Kg 120-12-7 mg/Kg 1912-24-9 mg/Kg 100-52-7 mg/Kg 92-87-5 mg/Kg 56-55-3 mg/Kg 50-32-8 mg/Kg 205-99-2 mg/Kg 191-24-2 mg/Kg 207-08-9 mg/Kg 100-51-6 mg/Kg 111-91-1 mg/Kg 111-44-4 mg/Kg 117-81-7 mg/Kg 85-68-7 mg/Kg 105-60-2 mg/Kg 86-74-8 mg/Kg 218-01-9 mg/Kg 53-70-3 mg/Kg 132-64-9 mg/Kg 84-66-2 mg/Kg 131-11-3 mg/Kg 84-74-2 mg/Kg 117-84-0 mg/Kg 206-44-0 mg/Kg 86-73-7 mg/Kg 118-74-1 mg/Kg 87-68-3 mg/Kg 77-47-4 mg/Kg 67-72-1 mg/Kg 193-39-5 mg/Kg
Summary Resident Soil (RSI.) TIIQ=I.O
' l N/P 6300 2.7 N/P 27 N/P 3600 N/P 7800 18000 2.4 170 0.00053
1.1
0.11
1.1
N/P
11
6300 190 0.23 39 290 31000 N/P 110
0.11
73 51000 N/P 6300
630 2400 2400
0.21
1.2 1.8 1.8 1.1
IMIS-\ i I'ilv \!~0.v rHSiSMU-?t
0-3 inches 10-2 2017 Field Sample
L 0.2 U 0.17 U 0.22 U 0.2 U 0.24 U 0.38 U 0.032 U 0.029 U 0.18 U 0.029 U 0.17 U 0.25 UJK 0.2 UJK 0.03 U 0.027 U 0.028 U 0.033 U 0.027 U 0.19 U 0.2 U 0.21 U 0.2 U 0.21 U 0.15 U 0.2 U 0.037 U 0.032 U 0.21 U 0.21 U 0.2 U 0.21 U 0.18 U 0.034 U 0.029 U 0.25 U 0.17 U 0.15 UJK 0.18 U 0.029 U
Table 1 Soil Analytical Results Pawhuska High School ER
EPA Region 6
IMIS-B5
0-3 inches 102 2017 Field Sample
L 0.2 U 0.17 U 0.23 U 0.2 U 0.24 U 0.38 U 0.032 U 0.029 U 0.19 U 0.029 U 0.17 U 0.25 UJK 0.2 UJK 0.03 U 0.027 U 0.028 U 0.033 U 0.027 U 0.19 U 0.2 U 0.21 U 0.21 U 0.21 U 0.15 U 0.21 U 0.037 U 0.032 U 0.21 U 0.21 U 0.21 U 0.21 U 0.18 U 0.034 U 0.029 U 0.25 U 0.17 U 0.15 UJK 0.18 U 0.029 U
PliS-i 3 !*iis.-i a-oj-rioo:-oi-5i
0-3 inches 10 2 201" Field Sample
l
0.2 u 0.17 U 0.23 U 0.2 U 0.24 U 0.38 U 0.032 U 0.029 U 0.19 U 0.029 U 0.17 U 0.25 UJK 0.2 UJK 0.063 JQ 0.049 JQ 0.064 JQ 0.033 U 0.031 JQ 0.19 U 0.2 U 0.21 U 0.21 U 0.21 U 0.15 U 0.21 U 0.06 JQ 0.032 U 0.21 U 0.21 U 0.21 U 0.21 U 0.18 U 0.11 0.029 U 0.25 U 0.17 U 0.15 UJK 0.18 U 0.029 U
IMIS-C3 1'llvi .in.?-1"inn'-il'-51
0-3 inches 10 2 201" Field Sample
u.-V 1. 0.2 U 0.17 U 0.23 U 0.2 U 0.24 U 0.38 U 0.032 U 0.029 U 0.19 U 0.029 U 0.17 U 0.25 UJK 0.2 U 0.03 U 0.027 U 0.028 U 0.033 U 0.027 U 0.19 UJK 0.2 U 0.21 U 0.21 U 0.21 U 0.15 U 0.21 U 0.037 U 0.032 U 0.21 U 0.21 U 0.21 U 0.21 U 0.18 U 0.034 U 0.029 U 0.25 U 0.17 U 0.15 UJK 0.18 U 0.029 U
PIIS-C3 I'HS.f 3-IW-1-HMI2-IU-5I
0-3 inches 102 201" Field Sample
i.:u 0.2 U 0.17 U 0.22 U 0.2 U 0.24 U 0.38 U 0.032 U 0.029 U 0.18 U 0.029 U 0.17 U 0.25 UJK 0.2 UJK 0.03 U 0.027 U 0.028 U 0.033 U 0.027 U 0.19 U 0.2 U 0.21 U 0.2 U 0.21 U 0.15 U 0.2 U 0.037 U 0.032 U 0.21 U 0.21 U 0.2 U 0.21 U 0.18 U 0.034 U 0.029 U 0.25 U 0.16 U 0.15 UJK 0.18 U 0.029 U
IMIS-C 3 iMfs. .Mu-rioo:-.?-?:
0-3 inches 10 2-201" Field Duplicate
l
0.2 U 0.17 U 0.23 U 0.2 U 0.24 U 0.38 U 0.032 U 0.029 U 0.19 U 0.029 U 0.17 U 0.25 UJK 0.2 UJK 0.03 U 0.027 U 0.028 U 0.033 U 0.027 U 0.19 U 0.2 U 0.21 U 0.21 U 0.21 U 0.15 U 0.21 U 0.037 U 0.032 U 0.21 U 0.21 U 0.21 U 0.21 U 0.18 U 0.034 U 0.029 U 0.25 U 0.17 U 0.15 UJK 0.18 U 0.029 U
IMIS-Fit nivK M U -riooM n-fi
0-3 inches 10 2 201 Field Sample
n ! 0.2 U 0.17 U 0.23 U 0.2 U 0.24 U 0.38 U 0.032 U 0.029 U 0.18 U 0.029 U 0.17 U 0.25 UJK 0.2 R 0.037 JQ 0.036 JQ 0.056 JQ 0.033 U 0.027 U 0.19 U 0.2 U 0.21 U 0.21 U 0.21 U 0.15 U 0.21 U 0.047 JQ 0.032 U 0.21 U 0.21 U 0.21 U 0.21 U 0.18 U 0.1 0.029 U 0.25 U 0.17 U 0.15 UJK 0.18 U 0.029 U
4 of 5 Tiers 8&9
20600.012.001.1055.01 ED 002061 00177609-00007
Table 1 Soil Analytical Results Pawhuska High School ER
EPA Region 6
( \ s . \ o l fii
Isophorone
78-59-1 mg/Kg
Naphthalene
91-20-3 mg/Kg
Nitrobenzene
98-95-3 mg/Kg
N-Nitrosodhnethylamine
62-75-9 mg/Kg
N-Nitroso-di-n-propylamine
621-64-7 mg/Kg
N-Nitrosodiphenylamine
86-30-6 mg/Kg
Pentachlorophenol
87-86-5 mg/Kg
Phenanthrene
85-01-8 mg/Kg
Phenol
108-95-2 mg/Kg
Pyrene
129-00-0 mg/Kg
TX 1005 Texas - Total Petroleum Hydrocarbon (GC)
C6-C12
STL00061 mg/Kg
C6-C35 Summary
STL00265 mg/Kg
Over C12-C28
STL00035 mg/Kg
Over C28-C35
STL00147 mg/Kg
Summary Resident Soil (RSI.) Til 0-1,0
"" 3.8 5.1 0.002 0.078 110 1 N/P 19000 1800
50 50 50 50
IM IS-\1 I'liv M-o.i-rioo;.oi-?i
0-3 incise 10 2 2017 Field Sample
i 0.029 U
0.2 U 0.02 U 0.19 U 0.052 U 0.26 U 0.034 U 0.2 U 0.034 U
6.3 U 6.3 U 6.3 U 6.3 U
PIIS-B5 i'lpx-lii-su- !" 1002-0 1-51
0-3 incse 102 2017 ridi! Sample
'f IV L 0.029 U
0.2 U 0.02 U 0.19 U 0.053 U 0.27 U 0.034 U 0.2 U 0.034 U
PIIS-3 1*1iv f T 0j-i"i00' Oi 5i
0-3 indie 10 2 201" Field Sample
!
0.029 U 0.2 U 0.02 U 0.19 U
0.053 U 0.27 U 0.096 0.2 U 0.096
IMIS-C3 !'!!:-( '..ss. rissss2-ss2-5i
0-3 indie 10 2 201" Field Sample
V IV l_ 0.029 U 0.2 U 0.02 U 0.19 U 0.053 U 0.27 U 0.034 U 0.2 U 0.034 U
11 U
7.2 U
8.2 U
11 U
7.2 U
8.2 U
11 U
7.2 U
8.2 U
11 U
7.2 U
8.2 U
PIIS-C3 nis-c 3-il.-r 1IMI2-IU-5I
0-3 incse 102201"
Field Sample
..
:
0.029 U 0.2 U 0.02 U 0.19 U
0.052 U 0.26 U 0.034 U 0.2 U 0.034 U
7.1 U 7.1 U 7.1 U 7.1 U
PIIS-C3 imp- d o.-rioo:-ss.?-?'
0-3 incise 10 2-201" Field Duplicale
! . 0.029 U
0.2 U 0.02 U 0.19 U 0.053 U 0.27 U 0.034 U 0.2 U 0.034 U
PIIS-F.it l'Ix-FMiJ-rilHIMII-fl
0-3 indie 10 2 201" Field Sample
v i-i 1 0.029 U
0.2 U 0.02 U 0.19 U 0.053 U 0.26 U 0.077 0.2 U 0.075
7.7 U
10U
7.7 U
10U
7.7 U
10U
7.7 U
10U
BOLD = Detected above the detection limit Yellow highlight = equal or exceeds RSL. B = Compound was found in the blank and sample. H = High bias. J = Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. K = Unknown bias. L = Low bias. Q = The reported concentration is less than the sample quantitation limit for the specific analyte in the sample. R = Quality Control indicates that data are unusable for all purposes. U = Indicates the analyte was analyzed for but not detected.
N/P = Not Published
TPH was compared to the ODEQ guidance for Risk-Based Levels of Total Petroleum Hydrocarbons (TPH)(October 2012) of 50 mg/Kg for 0 to 2 ft bgs.
USEPA REGION 6 Sierra Club v. EPA 18cv3472 NDCA
5 of 5 Tiers 8&9
20600.012.001.1055.01 ED 002061 00177609-00008