Attachment_2_-_Rocky_Mountain_National_Park_East_Troublesome_Fire_Draft_Site_Data_Tables.pdf

Table 3 Summary of Analytical Laboratory Results for Green Mountain - Onahu Ranch Area

District

Structure Name

Onahu Ranch

Abasaw Aw Xa

Cottage

Onahu Ranch Ho Ta Ta Ha Cottage

Onahu Ranch Na Ha Non Cottage

Onahu Ranch Bakuni Cottage

Onahu Ranch

Pumphouse

Onahu Ranch

Tool Shed

Onahu Combined

GMR

Barn

GMR

Pumphouse

GMR

Pioneer Cottage

GMR

Wood

Storage Shed

GMR

Mineral Cottage

GMR

Parika

Cottage GRM-East

GMR

Arapaho Cottage

GMR

Onahu

Cottage

GMR

Cumulus Cottage

GMR

Cirrus

Cottage

GMR

Meadow Cottage

GRM-West

Structure Number 0575 0575 0583 0577 0578 0579 0587 0624 0583, 0577, 0578, 0579 0724 0853 0727 0728 0731 0732 727, 728, 731, 732 0733 0734 0735 0737 0740 733, 734, 735, 737, Lab Report 231686 231686 228594 228594 228594 228594 228571 228594 228594 228571 228571 228571 228571 228571 228571 228571 228571 228571 228571 228571 228571 228571

Sample ID B-575-SA- 1-01

B-575-SA-2-

S-583-SA-

1-01

S-577-SA-

1-01

S-578-SA-

1-01

S-579-SA-

1-01

S-587-SA-1-

S-624-SA-

1-01

S-OC-SA-1-

B-724-SA-

1-01

B-853-SA-1-

S-727-SA-

1-01

S-728-SA-

1-01

S-731-SA-

1-01

S-732-SA-

1-01

S-GRME-

SA-1-01

S-733-SA-

1-01

S-734-SA-

1-01

S-735-SA-

1-01

S-737-SA-

1-01

S-740-SA-

1-01

S-GRMW-

SA-1-01

Date Sampled 9/30/2022 9/30/2022 9/29/2022 9/29/2022 9/29/2022 9/29/2022 9/28/2022 9/29/2022 9/29/2022 9/27/2022 9/27/2022 9/27/2022 9/27/2022 9/27/2022 9/27/2022 9/27/2022 9/28/2022 9/28/2022 9/28/2022 9/28/2022 9/28/2022 9/28/2022

Analyte

Metals Antimony 7440-36-0 SW846 6020A mg/kg 0.09 3.1 0.248 0.248 3.37 3.14 0.141 1.2 0.519 0.443 0.064 0.187 NA 0.803 0.267 0.732 0.216 0.73 0.329 NA 1.12 0.659 0.572 0.625 1.65 NA Arsenic 7440-38-2 SW846 6020A mg/kg 3.89 11 0.25 0.25 2.14 2.36 2.92 10 3.86 3.68 3.45 3.54 NA 2.28 4.28 3.12 3.14 3.67 3.39 NA 2.62 3.07 5.54 3.94 3.37 NA Barium 7440-39-3 SW846 6020A mg/kg 129.32 1500 17.2 17.2 237 239 114 648 1060 298 176 262 NA 147 416 440 255 1000 356 NA 510 543 358 168 787 NA Beryllium 7440-41-7 SW846 6020A mg/kg 0.62 16 2.42 2.42 0.294 0.34 0.419 0.552 0.597 0.634 0.549 0.554 NA 0.346 0.674 0.538 0.562 0.598 0.557 NA 0.444 0.58 0.523 0.537 0.499 NA Cadmium 7440-43-9 SW846 6020A mg/kg 0.22 0.7 0.27 0.27 0.171 0.114 0.146 0.237 0.206 0.265 0.302 0.182 NA 0.24 0.729 0.401 0.307 0.219 0.279 NA 0.799 0.302 0.192 0.302 0.359 NA Chromium 7440-47-3 SW846 6020A mg/kg 27.65 12000 0.34 0.34 14.6 18.5 24.9 31.6 25.1 28.6 25.7 26.5 NA 26 24.1 23.5 32.3 28.1 27.3 NA 23.5 29.5 26.7 26.1 21.3 NA Cobalt 7440-48-4 SW846 6020A mg/kg 7.59 2.3 13 2.3 5.09 4.81 6.44 9.8 8.8 8.43 7.99 8.14 NA 8.35 7.36 6.26 7.05 8.96 6.99 NA 6.42 7.44 6.6 6.91 6.02 NA Copper 7440-50-8 SW846 6020A mg/kg 27.65 310 14 14 4150 10800 132 45.1 146 52.8 23.8 8.55 NA 97.4 32.1 306 369 103 436 NA 515 751 95 73.1 79.5 NA Lead 7439-92-1 SW846 6020A mg/kg 16.98 400 0.94 0.94 63.6 22.3 22.6 120 79.4 102 21.9 27.7 NA 44.5 599 27.2 132 136 39.1 NA 82.2 51.3 20 29.3 35.4 NA Mercury 7439-97-6 SW846 7471B mg/kg 0.07 1.1 0.013 0.013 0.13 U 0.11 U 0.12 U 0.12 U 0.12 J 0.12 U 0.12 U 0.11 U NA 0.13 U 0.12 U 0.12 U 0.11 U 0.090 J 0.13 U NA 0.11 U 0.12 U 0.11 U 0.12 U 0.12 U NA Molybdenum 7439-98-7 SW846 6020A mg/kg 0.85 39 0.52 0.52 1.13 1.31 0.457 0.887 0.917 0.912 0.773 0.831 NA 1.18 0.849 0.842 0.72 0.873 0.674 NA 0.813 0.958 0.908 0.889 1.03 NA Nickel 7440-02-0 SW846 6020A mg/kg 16.06 150 10 10 11.9 12 15.4 17.1 14.6 15.7 16.3 13.6 NA 22.9 16.2 18.1 14 17.6 15 NA 16.5 44.7 19.3 19.4 14.2 NA Selenium 7782-49-2 SW846 6020A mg/kg 0.18 39 0.331 0.331 0.11 J 0.09 U 0.11 J 0.21 J 0.19 J 0.21 J 0.21 J 0.14 J NA 0.10 J 0.21 J 0.17 J 0.16 J 0.16 J 0.15 J NA 0.14 J 0.15 J 0.14 J 0.17 J 0.15 J NA Silver 7440-22-4 SW846 6020A mg/kg 0.05 39 2 2 0.375 0.292 0.04 0.087 0.068 0.069 0.052 0.041 NA 0.106 0.123 0.107 0.075 0.071 0.097 NA 0.13 0.092 0.064 0.069 0.09 NA Thallium 7440-28-0 SW846 6020A mg/kg 0.26 0.1 0.027 0.027 0.117 0.166 0.22 0.229 0.226 0.246 0.252 0.226 NA 0.154 0.177 0.194 0.233 0.245 0.227 NA 0.15 0.219 0.192 0.226 0.191 NA Vanadium 7440-62-2 SW846 6020A mg/kg 36.86 39 0.714 0.714 28.9 21.8 30.9 37.3 35.8 36.80 35.3 33.5 NA 28.4 30.9 32.4 31.9 36 33.9 NA 24.7 31.9 34.6 32.7 32.8 NA Zinc 7440-66-6 SW846 6020A mg/kg 83.88 2300 6.62 6.62 825 370 215 330 281 198 192 133 NA 298 1470 846 248 425 178 NA 391 1030 202 318 185 NA

Dioxins/Furans5

2,3,7,8-TCDD 8290A or 1613B + ng/Kg 0.16 Use TEQ Use TEQ Use TEQ 0.420 U 5.2 NA NA NA NA 0.129 U NA 0.862K* 2.46 3.92 NA NA NA NA 0.866 NA NA NA NA NA 0.534 K 1,2,3,7,8-PeCDD 8290A or 1613B + ng/Kg 0.65 Use TEQ Use TEQ Use TEQ 0.154 U 23.6 NA NA NA NA 0.608 JK NA 5.04K* 10 25.9 NA NA NA NA 5.03 NA NA NA NA NA 1.45 J 1,2,3,6,7,8-HxCDD 8290A or 1613B + ng/Kg 1.70 Use TEQ Use TEQ Use TEQ 0.265 BJ 38.5 NA NA NA NA 2.6 NA 25.1* 17.7 191 NA NA NA NA 26.2 NA NA NA NA NA 2.38 J 1,2,3,4,7,8-HxCDD 8290A or 1613B + ng/Kg 1.64 Use TEQ Use TEQ Use TEQ 0.131 U 41.2 NA NA NA NA 1.23 BJ NA 23.4* 10.4 52.9 NA NA NA NA 33.8 NA NA NA NA NA 1.88 JK 1,2,3,7,8,9-HxCDD 8290A or 1613B + ng/Kg 1.13 Use TEQ Use TEQ Use TEQ 0.137 U 44.9 NA NA NA NA 2.1 JK NA 22.5* 19.2 160 NA NA NA NA 22.6 NA NA NA NA NA 2.72 K 1,2,3,4,6,7,8-HpCDD 8290A or 1613B + ng/Kg 31.70 Use TEQ Use TEQ Use TEQ 1.53 BJK 689 NA NA NA NA 58.1 NA 1020* 332 11300 NA NA NA NA 1370 NA NA NA NA NA 58.2 OCDD 8290A or 1613B + ng/Kg 259.93 Use TEQ Use TEQ Use TEQ 104 3410 NA NA NA NA 379 NA 6260E* 1750 76200 NA NA NA NA 43100 E NA NA NA NA NA 406 2,3,7,8-TCDF 8290A or 1613B + ng/Kg 0.71 Use TEQ Use TEQ Use TEQ 0.356 U 56.3 NA NA NA NA 0.0783 U NA 0.906* 10.1 0.631 K NA NA NA NA 0.823 K NA NA NA NA NA 4.61 K 1,2,3,7,8-PeCDF 8290A or 1613B + ng/Kg 2.84 Use TEQ Use TEQ Use TEQ 0.181 U 88.1 NA NA NA NA 0.232 U NA 1.47J* 31.1 0.972 JK NA NA NA NA 1.71 J NA NA NA NA NA 4.16 2,3,4,7,8-PeCDF 8290A or 1613B + ng/Kg 2.33 Use TEQ Use TEQ Use TEQ 0.184 U 196 NA NA NA NA 0.381 J NA 3.08K* 47.7 1.91 JK NA NA NA NA 3.18 NA NA NA NA NA 6.2 1,2,3,6,7,8-HxCDF 8290A or 1613B + ng/Kg 19.63 Use TEQ Use TEQ Use TEQ 0.282 JK 192 NA NA NA NA 0.539 JK NA 7.43* 50 P 4.27 NA NA NA NA 8.1 NA NA NA NA NA 5.19

1,2,3,7,8,9-HxCDF 8290A or 1613B + ng/Kg 12.61 Use TEQ Use TEQ Use TEQ 0.296 BJK 226 NA NA NA NA 0.495 U NA 5.55* 13.7 1.78 JK NA NA NA NA 4.89 K NA NA NA NA NA 1.76 J

1,2,3,4,7,8-HxCDF 8290A or 1613B + ng/Kg 1.75 Use TEQ Use TEQ Use TEQ 0.187 BJ 106 NA NA NA NA 0.761 JK NA 18.9* 48.8 6.06 NA NA NA NA 23 NA NA NA NA NA 4.77

2,3,4,6,7,8-HxCDF 8290A or 1613B + ng/Kg 2.53 Use TEQ Use TEQ Use TEQ 0.192 BJK 295 NA NA NA NA 0.463 JK NA 8.42* 32.7 5.82 NA NA NA NA 8.07 NA NA NA NA NA 4.92

1,2,3,4,6,7,8-HpCDF 8290A or 1613B + ng/Kg 171.49 Use TEQ Use TEQ Use TEQ 2.73 1920 NA NA NA NA 16.3 NA 171* 112 302 NA NA NA NA 247 NA NA NA NA NA 36.1

1,2,3,4,7,8,9-HpCDF 8290A or 1613B + ng/Kg 16.86 Use TEQ Use TEQ Use TEQ 0.403 BJK 168 NA NA NA NA 1.73 J NA 15.7K* 12.7 K 11.2 NA NA NA NA 19.4 NA NA NA NA NA 1.66 J

OCDF 8290A or 1613B + ng/Kg 467.07 Use TEQ Use TEQ Use TEQ 8.63 1820 NA NA NA NA 64.7 NA 689* 63.9 1430 NA NA NA NA 769 NA NA NA NA NA 38 Total TEQ Calculated ng/Kg 8.04 4.8 0.29 0.29 0.203 220 NA NA NA NA 2.39 NA 32.2 53.1 212 NA NA NA NA 49.1 NA NA NA NA NA 7.89

Toxicity Characteristic Leaching Procedure (TCLP) Regulatory Limit

Chromium 7440-47-3 EPA 1311 mg/L 5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Lead 7439-92-1 EPA 1311 mg/L 5 NA 0.19 NA 0.43 NA 0.013 J NA NA NA NA 0.46 NA NA 0.025 J NA NA NA NA NA NA NA NA Barium 7440-39-3 EPA 1311 mg/L 100 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA

Notes:

1. Site Specific Background Concentration. 95% upper confidence limits (UCL) calculated from three incremental sampling method (ISM) replicates using the Interstate Technology Regulatory Council’s (ITRC’s) updated Microsoft Excel workbook ISM 95% calculator (ITRC 2020a). U flagged data = one half of the method detection limit (MDL).

2. USEPA Regional Screening Levels (RSLs) Resident Soil Generic Tables - Target risk 1E-06, Target HQ 0.1 (November 2022). For arsenic, use Colorado Arsenic Risk Management Guidance for Evaluating Arsenic Concentrations in Soil = 11 mg/kg as a cleanup level.

3. Lowest Refined Screening-Level Ecological Risk Assessments (SLERA) Ecological Screening Value (ESV) for mammals, birds, plants, and invertebrates across all NPS-approved sources for soils (Table 5 and 6 of NPS Protocol for the Selection and use of Ecological Screening Values for Non-Radiological Analytes).

4. Project Risk Based Screening Level (RBSL) = lower of USEPA Regional Screening Level (RSL) and NPS SLERA ESVs.

5. Only Total TEQ used for comparison to EPA RSL, NPS ESV, and background. Compare the TEQ to the 2,3,7,8-TCDD screening level.

NA - not analyzed for constituent mg/kg - milligrams per kilogram or parts per million mg/L - milligrams per liter or parts per million ng/Kg - nanograms per kilogram or parts per trillion U = Analyte not detected. Method Detection Limit indicated.

J = Indicates an estimated value below the quantitation limit.

K = The ion abundance ratio between the primary and secondary ions were outside of theoretical acceptance limits. The concentration of this analyte should be considered as an estimate.

B = Indicates the associated analyte was found in the method blank at > 1/10th the reported value.

E = Estimated value. The reported concentration is above the calibration range of the instrument.

+ Dioxin/Furan Footnote - Samples analyzed by 8290A, except samples B-575-SA-2-01, B-575-SA-1-01, which were 1613B.

* Results flagged with an asterisk (*) indicate values outside control criteria.

TEQ = Toxic equivalency quotient, calculated by multiplying the result for each dioxin/furan and dioxin/furan-like compound by its toxic equivalency factor, and summing the results. ND value used = 0.5 MDL value. Compare the TEQ to the 2,3,7,8-TCDD screening level.

Result Bolded and Shaded Red - exceeds the EPA RSL, NPS Ecological RSV, and background concentration Result Bolded and Shaded Yellow - exceeds both Project Rick Screening Value (lower of the EPA RSL or NPS Screening value) and background concentration Result Shaded Grey - exceeds the Project RBSL but not the background concentration Result Bolded and Shaded Blue - exceeds the USEPA TCLP Regulatory Limit No Bolding or Shading - does not exceed the USEPA RSL, NPS Ecological screening value, or background concentration

Colorado River District

Project Risk Screening

Value 4

Onahu Ranch Lodge

CAS # Analytical Method Units

Site Specific Background

Concentration1

US EPA RSL

Resident Soil2

NPS Soil

COPEC

Selection ESV3

Time Critical Removal Action Site Inspection Report East Troublesome Wildfire Structural Loss National Park Service Rocky Mountain National Park Estes Park, CO 1 of 4

Table 6 Summary of Analytical Laboratory Results for Betty Dick Ranch Area

District Structure Name

Structure Number 0831 0831 Lab Report 228582 228582 Sample ID B-831-SA-1-01 B-831-SA-2-01

Date Sampled 10/4/2022 10/4/2022

Analyte

Metals Antimony 7440-36-0 SW846 6020A mg/kg 0.06 3.1 0.248 0.248 1.88 0.079 Arsenic 7440-38-2 SW846 6020A mg/kg 3.55 11 0.25 0.25 30.6 3.63 Barium 7440-39-3 SW846 6020A mg/kg 179.69 1500 17.2 17.2 272 107 Beryllium 7440-41-7 SW846 6020A mg/kg 1.05 16 2.42 2.42 0.654 0.681 Cadmium 7440-43-9 SW846 6020A mg/kg 0.41 0.7 0.27 0.27 0.931 0.627 Chromium 7440-47-3 SW846 6020A mg/kg 27.23 12000 0.34 0.34 28.4 23.1 Cobalt 7440-48-4 SW846 6020A mg/kg 7.44 2.3 13 2.3 4.02 6.17 Copper 7440-50-8 SW846 6020A mg/kg 27.230 310 14 14 38.3 10.6 Lead 7439-92-1 SW846 6020A mg/kg 14.59 400 0.94 0.94 81.3 14.9 Mercury 7439-97-6 SW846 7471B mg/kg 0.07 1.1 0.013 0.013 0.12 U 0.12 U Molybdenum 7439-98-7 SW846 6020A mg/kg 1.37 39 0.52 0.52 1.41 1.51 Nickel 7440-02-0 SW846 6020A mg/kg 16.78 150 10 10 20.9 19 Selenium 7782-49-2 SW846 6020A mg/kg 0.39 39 0.331 0.331 0.18 J 0.22 J Silver 7440-22-4 SW846 6020A mg/kg 0.11 39 2 2 0.103 0.093 Thallium 7440-28-0 SW846 6020A mg/kg 0.27 0.1 0.027 0.027 0.074 0.176 Vanadium 7440-62-2 SW846 6020A mg/kg 36.80 39 0.714 0.714 35.3 44.6 Zinc 7440-66-6 SW846 6020A mg/kg 96.99 2300 6.62 6.62 1050 266

Polychlorinated Biphenyls (PCBs) Aroclor-1016 11096-82-5 SW846 8082A mg/kg NC 0.41 1.1 1.1 0.024 U 0.024 U Aroclor-1221 11096-82-5 SW846 8082A mg/kg NC 0.2 No ESV 0.2 0.024 U 0.024 U Aroclor-1232 11096-82-5 SW846 8082A mg/kg NC 0.17 No ESV 0.17 0.024 U 0.024 U Aroclor-1242 11096-82-5 SW846 8082A mg/kg NC 0.23 0.041 0.041 0.024 U 0.024 U Aroclor-1248 11096-82-5 SW846 8082A mg/kg NC 0.23 0.0073 0.0073 0.024 U 0.024 U Aroclor-1254 11096-82-5 SW846 8082A mg/kg NC 0.12 0.041 0.041 0.024 U 0.024 U Aroclor-1260 11096-82-5 SW846 8082A mg/kg NC 0.24 0.88 0.24 0.024 U 0.024 U Aroclor-1262 11096-82-5 SW846 8082A mg/kg NC NE NE NE 0.024 U 0.024 U Aroclor-1268 11096-82-5 SW846 8082A mg/kg NC NE NE NE 0.024 U 0.024 U Total PCBs 11096-82-5 SW846 8082A mg/kg NC NE NE NE 0.024 U 0.024 U

Chromium Hexavalent ( Cr+6) Hexavalent Chromium SW846 7196A mg/kg NC 0.3 12.01 0.3 1.5 U 1.5 U

Dioxins/Furans5

2,3,7,8-TCDD 8290A ng/Kg 0.07 Use TEQ Use TEQ Use TEQ 4.08 0.0852 U 1,2,3,7,8-PeCDD 8290A ng/Kg 0.34 Use TEQ Use TEQ Use TEQ 27.4 0.832 J 1,2,3,6,7,8-HxCDD 8290A ng/Kg 0.20 Use TEQ Use TEQ Use TEQ 54.8 1.81 J 1,2,3,4,7,8-HxCDD 8290A ng/Kg 0.42 Use TEQ Use TEQ Use TEQ 30.7 1.11 BJ 1,2,3,7,8,9-HxCDD 8290A ng/Kg 0.40 Use TEQ Use TEQ Use TEQ 60.2 1.81 J 1,2,3,4,6,7,8-HpCDD 8290A ng/Kg 2.94 Use TEQ Use TEQ Use TEQ 821 37.8 OCDD 8290A ng/Kg 24.11 Use TEQ Use TEQ Use TEQ 4280 E 257 2,3,7,8-TCDF 8290A ng/Kg 0.04 Use TEQ Use TEQ Use TEQ 4.54 0.153JK 1,2,3,7,8-PeCDF 8290A ng/Kg 0.17 Use TEQ Use TEQ Use TEQ 4.31 0.112 JK 2,3,4,7,8-PeCDF 8290A ng/Kg 0.33 Use TEQ Use TEQ Use TEQ 6.94 0.202 JK 1,2,3,6,7,8-HxCDF 8290A ng/Kg 0.21 Use TEQ Use TEQ Use TEQ 12.4 0.425 J 1,2,3,7,8,9-HxCDF 8290A ng/Kg 0.27 Use TEQ Use TEQ Use TEQ 3.09 0.114 U 1,2,3,4,7,8-HxCDF 8290A ng/Kg 0.30 Use TEQ Use TEQ Use TEQ 9.42 0.333 J 2,3,4,6,7,8-HxCDF 8290A ng/Kg 0.35 Use TEQ Use TEQ Use TEQ 11.5 0.383 JK 1,2,3,4,6,7,8-HpCDF 8290A ng/Kg 2.13 Use TEQ Use TEQ Use TEQ 123 P 6.05 1,2,3,4,7,8,9-HpCDF 8290A ng/Kg 0.44 Use TEQ Use TEQ Use TEQ 6.79 0.364 BJ OCDF 8290A ng/Kg 9.25 Use TEQ Use TEQ Use TEQ 166 22.2 Total TEQ Calculated ng/Kg 0.46 4.8 0.29 0.29 63.2 2.02

Notes:

4. Project Risk Based Screening Level (RBSL) = lower of USEPA RSL and NPS SLERA ESVs.

5. Only Total TEQ used for comparison to EPA RSL, NPS ESV, and background. Compare the TEQ to the 2,3,7,8-TCDD screening level.

NE - no standard established NC - not calculated mg/kg - milligrams per kilogram or parts per million mg/L - milligrams per liter or parts per million ng/Kg - nanograms per kilogram or parts per trillion

J = Indicates an estimated value below the quantitation limit.

B = Indicates the associated analyte was found in the method blank at > 1/10th the reported value.

P = Chlorodiphenyl ether interference was present at the retention time of the target analyte. Reported result should be considered an estimate.

E = Estimated value. The reported concentration is above the calibration range of the instrument.

Project Risk

Screening Value 4

Betty Dick Ranch Garage Colorado River District

CAS # Analytical Method Units

Site Specific Background

Concentration1

US EPA RSL

Resident Soil2

NPS Soil

COPEC

Selection

ESV3

Result Bolded and Shaded Red - exceeds the EPA RSL, NPS Ecological RSV, and background concentration Result Bolded and Shaded Yellow - exceeds both Project Rick Screening Value (lower of the EPA RSL or NPS Screening value) and background concentration

No Bolding or Shading - does not exceed the USEPA RSL, NPS Ecological screening value, or background concentration

1. Site Specific Background Concentration. 95% upper confidence limits (UCL) calculated from three ISM replicates using the Interstate Technology Regulatory Council’s (ITRC’s) updated Microsoft Excel workbook ISM 95% calculator (ITRC 2020a). U flagged data = one half of the MDL.

3. Lowest Refined SLERA Ecological Screening Value (ESV) for mammals, birds, plants, and invertebrates across all NPS-approved sources for soils (Table 5 and 6 of NPS Protocol for the Selection and use of Ecological Screening Values for Non-Radiological Analytes).

K = The ion abundance ratio between the primary and secondary ions were outside of theoretical acceptance limits. The concentration of this analyte should be considered as an estimate.

TEQ = Toxic equivalency quotient, calculated by multiplying the result for each dioxin and dioxin-like compound by its toxic equivalency factor, and summing the results. ND value used = 0.5 MDL value. Compare the TEQ to the 2,3,7,8-TCDD screening level.

U = Analyte not detected. Method Detection Limit indicated.

Result Shaded Grey - exceeds the Project RBSL but not the background concentration

2. USEPA Regional Screening Levels (RSLs) Resident Soil Generic Tables - Target risk 1E-06, Target HQ 0.1 (November 2022). For arsenic, use Colorado Arsenic Risk Management Guidance for Evaluating Arsenic Concentrations in Soil = 11 mg/kg as a cleanup level.

Time Critical Removal Action Site Inspection Report East Troublesome Wildfire Structural Loss National Park Service

Estes Park, CO 2 of 4

Table 7 Summary of Analytical Laboratory Results for Moraine Park Area

Wildfire Zone

Structure Name Moraine Stables

Bunk House / Mess House

Moraine Park Stables Dorm

Moraine Park Combined

Structure Number 0893 1086 0893, 1086 Lab Report 228596 228596 228596 Sample ID S-893-SA-1-01 S-1086-SA-1-01 S-MC-SA-1-01

Date Sampled 10/6/2022 10/6/2022 10/6/2022

Analyte

Metals Antimony 7440-36-0 SW846 6020A mg/kg 0.11 3.1 0.248 0.248 0.138 0.33 NA Arsenic 7440-38-2 SW846 6020A mg/kg 3.64 11 0.25 0.25 2.93 1.49 NA Barium 7440-39-3 SW846 6020A mg/kg 110.23 1500 17.2 17.2 85.4 57.1 NA Beryllium 7440-41-7 SW846 6020A mg/kg 0.49 16 2.42 2.42 0.388 0.204 NA Cadmium 7440-43-9 SW846 6020A mg/kg 0.28 0.7 0.27 0.27 0.173 0.375 NA Chromium 7440-47-3 SW846 6020A mg/kg 23.98 12000 0.34 0.34 19.1 11.3 NA Cobalt 7440-48-4 SW846 6020A mg/kg 5.98 2.3 13 2.3 6.24 4.93 NA Copper 7440-50-8 SW846 6020A mg/kg 23.977 310 14 14 30 39.1 NA Lead 7439-92-1 SW846 6020A mg/kg 35.48 400 0.94 0.94 19.1 15.8 NA Mercury 7439-97-6 SW846 7471B mg/kg 0.07 1.1 0.013 0.013 0.11 U 0.12 U NA Molybdenum 7439-98-7 SW846 6020A mg/kg 1.07 39 0.52 0.52 0.897 0.452 NA Nickel 7440-02-0 SW846 6020A mg/kg 12.10 150 10 10 9.46 6.88 NA Selenium 7782-49-2 SW846 6020A mg/kg 0.33 39 0.331 0.331 0.28 0.13 J NA Silver 7440-22-4 SW846 6020A mg/kg 0.06 39 2 2 0.154 0.031 NA Thallium 7440-28-0 SW846 6020A mg/kg 0.26 0.1 0.027 0.027 0.209 0.143 NA Vanadium 7440-62-2 SW846 6020A mg/kg 26.92 39 0.714 0.714 22.6 14.7 NA Zinc 7440-66-6 SW846 6020A mg/kg 83.76 2300 6.62 6.62 121 391 NA

Dioxins/Furans5

2,3,7,8-TCDD 8290A ng/Kg 0.070 Use TEQ Use TEQ Use TEQ NA NA 0.23 JK 1,2,3,7,8-PeCDD 8290A ng/Kg 0.320 Use TEQ Use TEQ Use TEQ NA NA 0.543 J 1,2,3,6,7,8-HxCDD 8290A ng/Kg 0.503 Use TEQ Use TEQ Use TEQ NA NA 0.764 JK 1,2,3,4,7,8-HxCDD 8290A ng/Kg 0.250 Use TEQ Use TEQ Use TEQ NA NA 0.686 JK 1,2,3,7,8,9-HxCDD 8290A ng/Kg 0.560 Use TEQ Use TEQ Use TEQ NA NA 0.716 J 1,2,3,4,6,7,8-HpCDD 8290A ng/Kg 5.895 Use TEQ Use TEQ Use TEQ NA NA 13.2 OCDD 8290A ng/Kg 41.833 Use TEQ Use TEQ Use TEQ NA NA 94.3 2,3,7,8-TCDF 8290A ng/Kg 0.112 Use TEQ Use TEQ Use TEQ NA NA 2.23 1,2,3,7,8-PeCDF 8290A ng/Kg 0.142 Use TEQ Use TEQ Use TEQ NA NA 1.98 J 2,3,4,7,8-PeCDF 8290A ng/Kg 0.143 Use TEQ Use TEQ Use TEQ NA NA 3.12 1,2,3,6,7,8-HxCDF 8290A ng/Kg 0.437 Use TEQ Use TEQ Use TEQ NA NA 2.58 1,2,3,7,8,9-HxCDF 8290A ng/Kg 0.310 Use TEQ Use TEQ Use TEQ NA NA 1.26 JK 1,2,3,4,7,8-HxCDF 8290A ng/Kg 0.583 Use TEQ Use TEQ Use TEQ NA NA 2.66 2,3,4,6,7,8-HxCDF 8290A ng/Kg 0.293 Use TEQ Use TEQ Use TEQ NA NA 3.48 1,2,3,4,6,7,8-HpCDF 8290A ng/Kg 4.475 Use TEQ Use TEQ Use TEQ NA NA 17.9 1,2,3,4,7,8,9-HpCDF 8290A ng/Kg 0.277 Use TEQ Use TEQ Use TEQ NA NA 1.46 J OCDF 8290A ng/Kg 14.719 Use TEQ Use TEQ Use TEQ NA NA 19 Total TEQ (WHO 2005 TEF, ND=0.5) Calculated ng/Kg 0.814 4.8 0.29 0.29 NA NA 3.57

Notes:

4. Project Risk Based Screening Level (RBSL) = lower of USEPA RSL and NPS SLERA ESVs.

5. Only Total TEQ used for comparison to EPA RSL, NPS ESV, and background. Compare the TEQ to the 2,3,7,8-TCDD screening level.

NA - not analyzed for constituent mg/kg - milligrams per kilogram or parts per million mg/L - milligrams per liter or parts per million ng/Kg - nanograms per kilogram or parts per trillion

J = Indicates an estimated value below the quantitation limit.

K = The ion abundance ratio between the primary and secondary ions were outside of theoretical acceptance limits. The concentration of this analyte should be considered as an estimate.

NPS Soil COPEC Selection ESV3

Project Risk Sceening Value 4

Thomspon Zone

CAS # Analytical Method Units

Site Specific Background

Concentration1

US EPA RSL

Resident Soil2

Result Shaded Grey - exceeds the Project RBSL but not the background concentration Result Bolded and Shaded Yellow - exceeds both Project Rick Screening Value (lower of the EPA RSL or NPS Screening value) and background concentration

No Bolding or Shading - does not exceed the USEPA RSL, NPS Ecological screening value, or background concentration

1. Site Specific Background Concentration. 95% upper confidence limits (UCL) calculated from three ISM replicates using the Interstate Technology Regulatory Council’s (ITRC’s) updated Microsoft Excel workbook ISM 95% calculator (ITRC 2020a). U flagged data = one half of the MDL.

3. Lowest Refined SLERA Ecological Screengin Value (ESV) for mammals, birds, plants, and invertebrates across all NPS-approved sources for soils (Table 5 and 6 of NPS Protocol for the Selection and use of Ecological Screening Values for Non-Radiological Analytes).

TEQ = Toxic equivalency quotient, calculated by multiplying the result for each dioxin and dioxin-like compound by its toxic equivalency factor, and summing the results. ND value used = 0.5 MDL value. Compare the TEQ to the 2,3,7,8- TCDD screening level.

U = Analyte not detected. Method Detection Limit indicated.

Result Bolded and Shaded Red - exceeds the EPA RSL, NPS Ecological RSV, and background concentration

2. USEPA Regional Screening Levels (RSLs) Resident Soil Generic Tables - Target risk 1E-06, Target HQ 0.1 (November 2022). For arsenic, use Colorado Arsenic Risk Management Guidance for Evaluating Arsenic Concentrations in Soil = 11 mg/kg as a cleanup level.

Time Critical Removal Action Site Inspection Report East Troublesome Wildfire Structural Loss National Park Service

Estes Park, CO 3 of 4

Table 8 Summary of Analytical Laboratory Results for Fern Lake Area

District East Side District Structure Name Fern Lake Ranger Station

Structure Number 0014 Lab Report 228579 Sample ID S-14-SA-1-01

Date Sampled 10/5/2022

Analyte

Metals Antimony 7440-36-0 SW846 6020A mg/kg 0.19 3.1 0.248 0.248 1.07 Arsenic 7440-38-2 SW846 6020A mg/kg 5.24 11 0.25 0.25 2.35 Barium 7440-39-3 SW846 6020A mg/kg 353.48 1500 17.2 17.2 235 Beryllium 7440-41-7 SW846 6020A mg/kg 0.44 16 2.42 2.42 0.286 Cadmium 7440-43-9 SW846 6020A mg/kg 0.62 0.7 0.27 0.27 1.03 Chromium 7440-47-3 SW846 6020A mg/kg 15.82 12000 0.34 0.34 32.1 Cobalt 7440-48-4 SW846 6020A mg/kg 9.56 2.3 13 2.3 4.13 Copper 7440-50-8 SW846 6020A mg/kg 15.82 310 14 14 54.6 Lead 7439-92-1 SW846 6020A mg/kg 60.50 400 0.94 0.94 297 Mercury 7439-97-6 SW846 7471B mg/kg 0.07 1.1 0.013 0.013 0.12 U Molybdenum 7439-98-7 SW846 6020A mg/kg 1.20 39 0.52 0.52 0.745 Nickel 7440-02-0 SW846 6020A mg/kg 9.19 150 10 10 13.2 Selenium 7782-49-2 SW846 6020A mg/kg 0.38 39 0.331 0.331 0.49 Silver 7440-22-4 SW846 6020A mg/kg 0.35 39 2 2 4.07 Thallium 7440-28-0 SW846 6020A mg/kg 0.31 0.1 0.027 0.027 0.186 Vanadium 7440-62-2 SW846 6020A mg/kg 28.04 39 0.714 0.714 23.5 Zinc 7440-66-6 SW846 6020A mg/kg 138.26 2300 6.62 6.62 304

Chromium Hexavalent ( Cr+6) Hexavalent Chromium SW846 7196A mg/kg NC 0.3 12.01 0.3 1.5 U

Dioxins/Furans5

2,3,7,8-TCDD 8290A ng/Kg 0.17 Use TEQ Use TEQ Use TEQ 1.82 1,2,3,7,8-PeCDD 8290A ng/Kg 0.31 Use TEQ Use TEQ Use TEQ 8.24 1,2,3,6,7,8-HxCDD 8290A ng/Kg 1.32 Use TEQ Use TEQ Use TEQ 63.7 1,2,3,4,7,8-HxCDD 8290A ng/Kg 0.77 Use TEQ Use TEQ Use TEQ 14 1,2,3,7,8,9-HxCDD 8290A ng/Kg 1.07 Use TEQ Use TEQ Use TEQ 32.1 1,2,3,4,6,7,8-HpCDD 8290A ng/Kg 38.07 Use TEQ Use TEQ Use TEQ 6220 OCDD 8290A ng/Kg 374.93 Use TEQ Use TEQ Use TEQ 72800 2,3,7,8-TCDF 8290A ng/Kg 0.14 Use TEQ Use TEQ Use TEQ 3.4 K 1,2,3,7,8-PeCDF 8290A ng/Kg 0.46 Use TEQ Use TEQ Use TEQ 2.29 J 2,3,4,7,8-PeCDF 8290A ng/Kg 0.75 Use TEQ Use TEQ Use TEQ 3.54 1,2,3,6,7,8-HxCDF 8290A ng/Kg 0.41 Use TEQ Use TEQ Use TEQ 8.53 1,2,3,7,8,9-HxCDF 8290A ng/Kg 0.36 Use TEQ Use TEQ Use TEQ 2.58 K 1,2,3,4,7,8-HxCDF 8290A ng/Kg 0.41 Use TEQ Use TEQ Use TEQ 6.82 2,3,4,6,7,8-HxCDF 8290A ng/Kg 0.38 Use TEQ Use TEQ Use TEQ 9.03 1,2,3,4,6,7,8-HpCDF 8290A ng/Kg 7.26 Use TEQ Use TEQ Use TEQ 468 1,2,3,4,7,8,9-HpCDF 8290A ng/Kg 0.56 Use TEQ Use TEQ Use TEQ 16.2 OCDF 8290A ng/Kg 38.66 Use TEQ Use TEQ Use TEQ 3580 Total TEQ Calculated ng/Kg 1.31 4.8 0.29 0.29 115

Toxicity Characteristic Leaching Procedure (TCLP) Regulatory Limit

Lead 7439-92-1 1311 mg/L 5 0.083

Notes:

4. Project Risk Based Screening Level (RBSL) = lower of USEPA RSL and NPS SLERA ESVs.

5. Only Total TEQ used for comparison to EPA RSL, NPS ESV, and background. Compare the TEQ to the 2,3,7,8-TCDD screening level.

NC - not calculated mg/kg - milligrams per kilogram or parts per million mg/L - milligrams per liter or parts per million ng/Kg - nanograms per kilogram or parts per trillion

J = Indicates an estimated value below the quantitation limit.

Result Bolded and Shaded Red - exceeds the EPA RSL, NPS Ecological RSV, and background concentration Result Bolded and Shaded Yellow - exceeds both Project Rick Screening Value (lower of the EPA RSL or NPS Screening value) and background concentration Result Shaded Grey - exceeds the Project RBSL but not the background concentration Result Bolded and Shaded Blue - exceeds the USEPA TCLP Regulatory Limit

Project Risk Screening

Value 4 CAS # Analytical

Method Units Site Specific Background

Concentration1

US EPA RSL

Resident Soil2

NPS Soil

COPEC

Selection

ESV3

TEQ = Toxic equivalency quotient, calculated by multiplying the result for each dioxin and dioxin-like compound by its toxic equivalency factor, and summing the results. ND value used = 0.5 MDL value. Compare the TEQ to the 2,3,7,8-TCDD screening level.

U = Analyte not detected. Method Detection Limit indicated.

No Bolding or Shading - does not exceed the USEPA RSL, NPS Ecological screening value, or background concentration

1. Site Specific Background Concentration. 95% upper confidence limits (UCL) calculated from three ISM replicates using the Interstate Technology Regulatory Council’s (ITRC’s) updated Microsoft Excel workbook ISM 95% calculator (ITRC 2020a). U flagged data = one half of the MDL.

3. Lowest Refined SLERA Ecological Screening Value (ESV) for mammals, birds, plants, and invertebrates across all NPS-approved sources for soils (Table 5 and 6 of NPS Protocol for the Selection and use of Ecological Screening Values for Non-Radiological Analytes).

K = The ion abundance ratio between the primary and secondary ions were outside of theoretical acceptance limits. The concentration of this analyte should be considered as an estimate.

2. USEPA Regional Screening Levels (RSLs) Resident Soil Generic Tables - Target risk 1E-06, Target HQ 0.1 (November 2022). For arsenic, use Colorado Arsenic Risk Management Guidance for Evaluating Arsenic Concentrations in Soil = 11 mg/kg as a cleanup level.

Time Critical Removal Action Site Inspection Report East Troublesome Wildfire Structural Loss National Park Service

Estes Park, CO 4 of 4