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Home My WebLink AboutDERR-2025-004907 February 24, 2025 Mr. Scott Wetzel Rocky Mountain Power - Environmental Services 1407 West North Temple, Suite 110A Salt Lake City, Utah 84116 RE: Revised Final - Remaining Arsenic and Lead Risk Evaluation, Power District Redevelopment Project - VCP Area ‘A’, 1223 West North Temple Street, Salt Lake City, Utah, Facility ID No. 4002609, VCP C119 A&M Engineering and Environmental Services, Inc. (A&M) has prepared this document to summarize a risk evaluation completed for remaining arsenic and lead contamination in soil for Utah Department of Environmental Quality (DEQ), Division of Environmental Response and Remediation (DERR) Voluntary Cleanup Program (VCP) Area ‘A’ of the RMP Power District Redevelopment Project (the Site) located at 1223 West North Temple Street, Salt Lake City, Salt Lake County, Utah (Figures 1 and 2). The objectives of the risk evaluation were: (1) to determine whether remaining post-removal remedial action concentrations of arsenic in Surface Soil (0 – 2 feet below grade surface [bgs]) was compliant with the cleanup goal of 14 milligrams per kilogram (mg/kg) for future commercial worker exposure, and (2) to evaluate whether remaining arsenic and lead in soil at 0 to 10 feet bgs, the depth likely to be encountered by workers during construction, poses a risk to construction workers. The risk evaluation was not intended to address ecological risk and only provides for worker exposure for currently intended land use. SURFACE SOIL ARSENIC CLEANUP GOAL COMPLIANCE Post-removal remedial action concentrations of arsenic in Surface Soil (0 – 2 feet bgs) were evaluated to determine whether remaining soil were compliant with the cleanup level of 14 mg/kg. Consistent with Section 6.2 of the Power District Redevelopment Project – VCP Area ‘A’ Remedial Action Plan (RAP), dated April 26, 2023 (Hill West, 2023b), compliance with the cleanup level was determined by calculation of an Exposure Point Concentration (EPC) based on samples within the evaluation area to determine if the calculated 95% Upper Mr. Scott Wetzel Project No. 2064-0003 February 24, 2025 Page 2 Arsenic Lead Risk Evaluation, Revised Final 02 24 2025 P a g e | 2 Confidence Limit (UCL) of the arithmetic mean for the data set is greater than the cleanup level of 14 mg/kg. Methodology The following methodology was used to determine whether post-remedial action arsenic concentrations in Surface Soil are compliant with the 14 mg/kg cleanup level in VCP Area ‘A’. (1) Laboratory analytical data for arsenic in Surface Soil samples collected during 2021 (Hill West, 2021a and 2021b) and August thru October 2022 (Hill West, 2023a) Site assessments across VCP Area ‘A’ that remained after the 2023 removal actions were used to calculate the EPC. (2) Thirty-five (35) soil samples were used, including seven (7) duplicate samples. (3) The 95% UCL was calculated using USEPA’s statistical software ProUCL Version 5.2. (4) When calculating the 95% UCL in the ProUCL software all statistical methods were used for the data set using “without non-detects” calculation method, which is appropriate to the data set. Sample Data Set The calculation of the EPC for remaining arsenic in Surface Soil (0 – 2 feet bgs) following the 2023 remedial removal actions in VCP Area ‘A’ included all laboratory analytical data for remaining Surface Soil in VCP Area ‘A’. Confirmation soil samples collected from the former Coal Storage Area, the former Aboveground Storage Tank Area, the soil boring AA-14, AA-16, and AA-19 excavation areas, and the concrete structure excavations following the removal action were not used in the EPC calculation. Those confirmation samples were all collected at depths where either a minimum of 2-feet of clean fill material has been placed in the excavations or will be placed as part of future redevelopment. Figure 2 presents the areas where current clean fill or future clean fill will be present and those locations where Surface Soil samples were used for the EPC calculation. The data set used for the EPC calculation is provided in Attachment A. EPC Calculation The 95% UCL of the arithmetic mean for the data set was calculated for arsenic in Surface Soil using the thirty-five (35) data points. The maximum concentration was 21.2 mg/kg, and the minimum concentration was 3.37 mg/kg, with a mean of 10.02 mg/kg and a median of 8.49 mg/kg. The calculation output indicated the data appear Normal at a 1% significance level, appear Gamma distributed at 5% significance level, appear Lognormal Mr. Scott Wetzel Project No. 2064-0003 February 24, 2025 Page 3 Arsenic Lead Risk Evaluation, Revised Final 02 24 2025 P a g e | 3 at 10% significance level, and follow a discernable distribution. The 95% Student’s-t UCL was suggested with a concentration of 11.54 mg/kg for remaining Surface Soil in VCP Area ‘A’, below the 14 mg/kg cleanup level. The ProUCL Output for the EPC calculation is provided in Attachment A. The calculated EPC for remaining Surface Soil in VCP Area ‘A’ indicates soil is compliant with the cleanup level for the Site and further remediation is not required for future Commercial land use. CONSTRUCTION WORK RISK EVALUATION Post-removal remedial action concentrations of arsenic and lead were evaluated for remaining arsenic and lead in soil 0 to 10 feet bgs, consistent with UDEQ Technical Guide for Risk Assessments: Utah Administrative Code R315-101, dated June 2023 (UDEQ, 2023) in VCP Area ‘A’ to determine whether remaining concentrations pose a risk to construction workers. To evaluate the potential risk, an EPC was calculated both for arsenic and lead based on data from soil samples that remained within the evaluation area from 0 to 10 feet bgs to determine if the calculated 95% Upper UCL of the arithmetic mean for the data set is above construction worker screening levels. Methodology The following methodology was used to determine whether post-remedial action arsenic and lead concentrations in soil 0 to 10 feet bgs pose a risk to construction workers in VCP Area ‘A’. (1) Laboratory analytical data for arsenic in soil samples collected from 0 to 10 feet bgs during the 2021and August thru October 2022 Site assessments across VCP Area ‘A’ that remained after the 2023 removal action, samples from the former Coal Storage Area, the former Aboveground Storage Tank Area, the soil boring AA-14, AA-16, and AA-19 excavation areas, and the concrete structure excavations following the 2023 removal action. (2) The soil samples collected during the August 2023 Jordan River additional sediment assessment (soil borings JRB-01 through JRB-10) were not used to calculate the EPC. The sampling area falls within the Area A – No Disturbance 25-foot zone of Salt Lake City’s 100-foot Riparian Corridor Overlay (RCO) for the Jordan River (see Figure 3) and would not undergo construction, except for minimal trenching to potentially extend storm sewer piping to the Jordan River. (3) One-hundred-eighty-six (186) soil samples, including thirteen (13) duplicate samples, were used for the arsenic calculation. Mr. Scott Wetzel Project No. 2064-0003 February 24, 2025 Page 4 Arsenic Lead Risk Evaluation, Revised Final 02 24 2025 P a g e | 4 (4) One-hundred-seventy-nine (179) soil samples, including twelve (12) duplicate samples, were used for the lead calculation. (5) The lead calculation does not include five (5) samples, AA-10-4, NTO-05 S, NTO-10 Dup B from the northwest area of the VCP Area ‘A’ and AA-24-4 and AA-26-4 in the former AST Area, with concentrations above 800 mg/kg. Lead contamination in VCP Area ‘A’ above 800 mg/kg is likely due to lead/coal combustion residual (CCR). Consistent with Section 6.2.1.1 of the RAP (Hill West, 2023b), during Site redevelopment, when CCR is encountered, an area of the material sufficient to allow construction will be removed and properly disposed off-Site. Those soils over 800 mg/kg will be remediated and removed from the Site by the property developer prior to construction and therefore should not be included in the risk evaluation for construction workers in VCP Area ‘A’. (6) The 95% UCLs were calculated using USEPA’s statistical software ProUCL Version 5.2. (7) When calculating the 95% UCL in the ProUCL software all statistical methods were used for the arsenic data set using “with non-detects” and the lead data set using “without non-detects” calculation method, which is appropriate to the respective data sets. (8) A construction worker would be exposed for five (5) days a week for 50 weeks for 1 year, consistent with the USEPA Construction Worker Exposure to Soil scenario to contaminants. (9) Site-specific Construction Worker Regional Screening Levels (RSLs) were calculated for arsenic using the USEPA RSL Calculator on December 12, 2024 using Site-specific inputs with reasonable daily construction assumptions for inputs. The RSL calculator input summary and Construction Worker RSLs are provided as Attachment B. Sample Data Sets The calculation of the EPCs for remaining arsenic and lead in soil 0 to 10 feet bgs following the 2023 remedial removal actions in VCP Area ‘A’ included all laboratory analytical data for remaining soil 0 to 10 feet bgs in VCP Area ‘A’. Figure 3 presents the locations where soil samples were used for the EPC calculation. The data sets used for the arsenic and lead EPC calculations are provided in Attachment C and the ProUCL outputs for the EPC calculations are provided in Attachment D. Mr. Scott Wetzel Project No. 2064-0003 February 24, 2025 Page 5 Arsenic Lead Risk Evaluation, Revised Final 02 24 2025 P a g e | 5 EPC Calculation - Arsenic The 95% UCL of the arithmetic mean for the data set was calculated for arsenic in soil 0 to 10 feet bgs using the one-hundred-eighty-six (186) data points. The maximum arsenic concentration was 93.8 mg/kg, and the minimum concentration was 0.918 mg/kg, with a mean of 14.33 mg/kg and a median of 9.77 mg/kg. The calculation output indicated the data was not Normal at a 1% significance level, was not Gamma distributed at a 5% significance level, was approximately Lognormal at 10% significance level, and appeared to follow a discernable distribution. The 95% H-UCL was suggested with a concentration of 16.11 mg/kg for arsenic remaining in soil 0 to 10 feet bgs in VCP Area ‘A’. This value is below the site-specific Construction Worker carcinogenic RSL for Unpaved Road Traffic of 19.3 mg/kg and the site-specific Construction Worker carcinogenic RSL for Other Construction Activities of 23.6 mg/kg at an excess cancer risk of 10 -6 for the Site, which assumes a construction worker on site for five (5) days a week for 50 weeks for 1 year. The ProUCL Output for the arsenic EPC calculation is provided in Attachment D. The calculated EPC for remaining soil 0 to 10 feet bgs in VCP Area ‘A’ indicates arsenic remaining in soil would not pose an unacceptable risk to construction workers during redevelopment of VCP Area ‘A’. EPC Calculation - Lead The 95% UCL of the arithmetic mean for the data set was calculated for lead in soil 0 to 10 feet bgs using the one-hundred-seventy-nine (179) data points. The maximum lead concentration was 784 mg/kg and the minimum concentration was 1.44 mg/kg, with a mean of 96.64 mg/kg and a median of 37.5 mg/kg. The calculation output indicated the data was not Normal at a 1% significance level, was not Gamma distributed at a 5% significance level, was approximately Lognormal at 10% significance level, and appeared to follow a discernable distribution. The 95% H-UCL was suggested with a concentration of 126.5 mg/kg for lead remaining in soil 0 to 10 feet bgs in VCP Area ‘A’. The calculated EPC is well below the Commercial Worker cleanup level of 800 mg/kg for the Site, which assumes a much more significant exposure (five (5) days a week for 50 weeks for 25 years) than a construction worker. The ProUCL Output for the lead EPC calculation is provided in Attachment D. The calculated EPC for remaining soil 0 to 10 feet bgs in VCP Area ‘A’ indicates lead remaining in soil would not pose an unacceptable risk to construction workers during redevelopment of VCP Area ‘A’. It should be noted, as presented in the RAP (Hill West, 2023b), that CONCLUSIONS A risk evaluation was completed for remaining arsenic and lead contamination in soil to determine whether remaining post-removal remedial action concentrations of arsenic in Mr. Scott Wetzel Project No. 2064-0003 February 24, 2025 Page 6 Arsenic Lead Risk Evaluation, Revised Final 02 24 2025 P a g e | 6 Surface Soil (0 – 2 feet bgs) was compliant with the RAP cleanup goal of 14 mg/kg for future commercial worker exposure, and to evaluate whether remaining arsenic and lead in soil at 0 to 10 feet bgs poses a risk to construction workers. The risk evaluation concluded the following:  The calculated EPC for remaining Surface Soil in VCP Area ‘A’ indicates soil is compliant with the 14 mg/kg cleanup level for the Site and further remediation is not required for future Commercial land use.  The calculated EPC for remaining arsenic in soil 0 to 10 feet bgs in VCP Area ‘A’ indicates arsenic remaining in soil would not pose an unacceptable risk to construction workers during redevelopment of VCP Area ‘A’.  The calculated EPC for remaining lead in soil 0 to 10 feet bgs in VCP Area ‘A’ indicates lead remaining in soil following the remediation of those soils with concentrations above 800 mg/kg would not pose an unacceptable risk to construction workers during redevelopment of VCP Area ‘A’. If you have any questions, please do not hesitate to contact Dan Landry at 541-743-2600. Sincerely, Daniel Landry Senior Project Manager A&M Engineering and Environmental Services, Inc. Claude Dahlk, CHMM Program Manager Hill West Environmental, LLC Attachments: References Figures Attachments A, B, C, and D REFERENCES UDEQ, 2023. Technical Guide for Risk Assessments: Utah Administrative Code R315-101 , 1355 West North Temple, Salt Lake City, Utah, Facility Identification No. 4001205 - Utah Department of Environmental Quality (UDEQ) Division of Waste Management and Radiation Control, June. Hill West, 2021a. Subsurface Investigation Report, Salt Lake Service Center , 1569 West North Temple Street, Salt Lake City, Utah – Hill West Environmental, LLC, February 9. Hill West, 2021b. Power District Redevelopment Project – Phase I Site Investigation Report, Planned Headquarters Building Area, 1301 West North Temple Street, Salt Lake City, Utah – Hill West, December 2. Hill West, 2023a. Power District Redevelopment Project – VCP Area ‘A’ Site Characterization Report (Revised), 1223 West North Temple Street, Salt Lake City, Utah, Facility ID No. 4002609, VCP ID No. VCP-C119 - Hill West, April 6. Hill West, 2023b. Power District Redevelopment Project – VCP Area ‘A’ Remedial Action Plan, 1223 West North Temple Street, Salt Lake City, Utah, Facility ID No. 4002609, VCP ID No. VCP-C119 - Hill West, April 26. FIGURES Power District Redevelopoment Project Boundary LEGEND SITE LOCATION MAP FIGURE TITLE DOCUMENT TITLE CLIENT LOCATION PROJECT NUMBER DATE AS SHOWNSCALE DJLDESIGNED BY CDAPPROVED BY SRMDRAWN BY FIGURE NUMBER 1 N 0 4,0002,000 SCALE FEET U.S.G.S. 7.5 MINUTE TOPOGRAPHIC QUADRANGLE SALT LAKE CITY, UT (2020) SOURCE: Site UTAH Power District Redevelopment Project 2/24/25 ROCKY MOUNTAIN POWER 2064-0003 1223 WEST NORTH TEMPLE STREET SALT LAKE CITY, UTAH 7963 Douglas Dr Park City, UT 84098 Phone: 801-450-8060 www.hillwestut.com ill Environmental H estW f1 _ S i t e L o c _ r 1 POWER DISTRICT REDEVELOPMENT PROJECT – VCP AREA A REMAINING ARSENIC AND LEAD RISK EVALUATION - REVISED FINAL GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS Former AST Area HQ-35 HQ-36 HQ-18 HQ-38 HQ-39 HQ-40 HQ-41 HQ-28 HQ-43 HQ-44 HQ-31 HQ-32 HQ-29 HQ-46 HQ-33 HQ-30 HQ-20 HQ-21 HQ-22 HQ-23 HQ-9 HQ-10 HQ-11 HQ-8 HQ-7 HQ-6 HQ-5 HQ-4 HQ-3 HQ-2 HQ-24 HQ-25 HQ-26 HQ-12 HQ-13 HQ-14 HQ-16 HQ-17 HQ-49 Pit 1 HQ-50 HQ-53 HQ-52 HQ-51 Pit 2 Pit 3 Pit 5 Pit 6 Pit 4 Trench 01 HQ-48 West North Temple Street MW-2 MW-1 MW-3 AA-1 AA-20 AA-21 AA-22 AA-18 AA-17 AA-24 AA-26AA-27 AA-16 AA-15 AA-38AA-39 AA-37 AA-36 AA-35AA-34 AA-33 AA-32 AA-31AA-30 AA-8 AA-9 AA-6 AA-11 AA-13 AA-12 AA-4 AA-2 AA-5 Jo r d a n R i v e r DP-01 Former USTs and Fuel Dispenser Location Former Motor Pool Maintenance Facility 500-Gallon Used Oil UST(Removed 1990) 4,000-Gallon Gasoline UST (Removed 1993) 4,000-Gallon Gasoline UST (Removed 1990) 12,000-Gallon Gasoline and Diesel USTs (Removed 1993) 4,000-Gallon Gasoline UST (Removed 1986) CP-01 CP-06 CP-04 CP-05 PD-01 PD-02 PD-03 PD-04PD-05 PD-06 PD-09 PD-10 PD-11 PD-12 HQ-1 HQ-37 HQ-28 HQ-34 Pit 2 AA-19 Trench 03 CP-02 Former Coal Storage Area PD-08 PD-07 AA-29 HQ-45 Stacker House Pad Underground Conveyor Structure Grizzly AA-23 AA-25 CP-03 CP-03-01NW CP-03-03SW CP-03-02NE HQ-27 CF-15 CF-14 CF-12 CF-10 CF-09 CF-08 CF-07 CF-05 CF-02 CF-06 CF-04 CF-01 CF-11 SH-01W SH-02E HQ-42 HQ-19 CF-03 Remaining Asbestos Transite Pipe Encased in Concrete South of Fence Coal Transfer House Pad AA-28 AST-01 AST-10 AST-08 AST-05 AST-09 AST-04 AST-03 AST-02 AST-07 AST-06 AA-14 Trench 02 AST-17 AST-16 AST-15 AST-13 AST-12 AST-11 JRB-01 JRB-02 JRB-03 JRB-04 JRB-05 JRB-06 JRB-07 JRB-08 JRB-09 JRB-10 AA-10 AA-40 CF-13 DP-02 AA-3 NTO-03 NTO-04 NTO-05 NTO-06 NTO-07 NTO-08 NTO-09 CONSTRUCTION OFFICE HQ-15 AA-7 NTO-01 NTO-02 NTO-10 AST-14 100-Foot Buffer Transition Line 50-Foot Structure Limit Line 25-Foot No Disturbance Line Annual High Water Level (AHWL) R I P A R I A N A R E A A R I P A R I A N A R E A B R I P A R I A N A R E A C LEGEND Approximate Site Boundary Soil Boring, July 2021HQ-1 Coal Sample Soil Boring, July 2021HQ-30 Shallow Soil Boring, September 2022 Coal Area Confirmation Sample, September 2023 Soil Sample, September 2022DP-01 CF-01 AA-6 Test Pit, July 2021Pit 1 Post-Excavation Former Coal Storage Area Soil Sample, May 2023CP-01 Groundwater Monitoring Well, November 2022PD-01 Former UST, Cyanide & Mercury Area Soil Boring, September 2022AA-1 AST Area Confirmation Sample, June 2023AST-01 Excavation Confirmation Sample, June 2023 Post-Excavation Former Coal Storage Area Soil Sample, August 2023CP-03-02NW Additional Confirmation Sample, September 2023AST-11 Former AST Area Investigative Trenches Sanitary Sewer Line Water Line High-Pressure Gas LineGAS Limit of Additional Excavation Limit of AST Area Excavation Limit of Coal Area Excavation Former Coal Storage Area Direct-Push Soil Sample Location, August 2023JRB-01 Trench Sample, July 2021Trench 01 Decommissioned UST Groundwater Monitoring WellMW-1 Trench Sample, September 2023NTO-01 Data not Included in Risk Evaluation. Area is, or will be, Backfilled with Clean Fill. Soil Sample used in Risk EvaluationAA-6 GOOGLE EARTH (2023)IMAGE SOURCE: PO S T - R E M O V A L A C T I O N R E M A I N I N G S U R F A C E S O I L ( 0 - 2 F E E T B G S ) SA M P L E L O C A T I O N S FI G U R E T I T L E DO C U M E N T T I T L E CL I E N T LO C A T I O N 2/24/25 PROJECT NUMBER DATE AS SHOWNSCALE DJLDESIGNED BY CDAPPROVED BY SRMDRAWN BY FIGURE NUMBER 2064-0003 2 7963 Douglas Dr Park City, UT 84098 Phone: 801-450-8060 www.hillwestut.com ill Environmental H estW RO C K Y M O U N T A I N P O W E R 12 2 3 W E S T N O R T H T E M P L E S T R E E T SA L T L A K E C I T Y , U T A H f2 _ A r e a A - S h a l l o w A r s e n i c A r e a _ r 7 PO W E R D I S T R I C T R E D E V E L O P M E N T P R O J E C T – V C P A R E A A RE M A I N I N G A R S E N I C A N D L E A D R I S K E V A L U A T I O N - R E V I S E D F I N A L N 0 200100 SCALE FEET 100-Foot Buffer Transition Line 50-Foot Structure Limit Line 25-Foot No Disturbance Line Annual High Water Level (AHWL) R I P A R I A N A R E A A R I P A R I A N A R E A B R I P A R I A N A R E A C GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS Former AST Area HQ-35 HQ-36 HQ-18 HQ-38 HQ-39 HQ-40 HQ-41 HQ-28 HQ-43 HQ-44 HQ-31 HQ-32 HQ-29 HQ-46 HQ-33 HQ-30 HQ-20 HQ-21 HQ-22 HQ-23 HQ-9 HQ-10 HQ-11 HQ-8 HQ-7 HQ-6 HQ-5 HQ-4 HQ-3 HQ-2 HQ-24 HQ-25 HQ-26 HQ-12 HQ-13 HQ-14 HQ-16 HQ-17 HQ-49 Pit 1 HQ-50 HQ-53 HQ-52 HQ-51 Pit 2 Pit 3 Pit 5 Pit 6 Pit 4 Trench 01 HQ-48 West North Temple Street MW-2 MW-1 MW-3 AA-1 AA-20 AA-21 AA-22 AA-18 AA-17 AA-24 AA-26AA-27 AA-16 AA-15 AA-38AA-39 AA-37 AA-36 AA-35AA-34 AA-33 AA-32 AA-31AA-30 AA-8 AA-9 AA-6 AA-11 AA-13 AA-12 AA-4 AA-2 AA-5 Jo r d a n R i v e r DP-01 Former USTs and Fuel Dispenser Location Former Motor Pool Maintenance Facility 500-Gallon Used Oil UST(Removed 1990) 4,000-Gallon Gasoline UST (Removed 1993) 4,000-Gallon Gasoline UST (Removed 1990) 12,000-Gallon Gasoline and Diesel USTs (Removed 1993) 4,000-Gallon Gasoline UST (Removed 1986) CP-01 CP-06 CP-04 CP-05 PD-01 PD-02 PD-03 PD-04 PD-05 PD-06 PD-09 PD-10 PD-11 PD-12 HQ-1 HQ-37 HQ-28 HQ-34 Pit 2 AA-19Trench 03 CP-02 Former Coal Storage Area PD-08 PD-07 AA-29 HQ-45 Stacker House Pad Underground Conveyor Structure Grizzly AA-23 AA-25 CP-03 CP-03-01NW CP-03-03SW CP-03-02NE HQ-27 CF-15 CF-14 CF-12 CF-10 CF-09 CF-08 CF-07 CF-05 CF-02 CF-06 CF-04 CF-01 CF-11 SH-01W SH-02E HQ-42 HQ-19 CF-03 Remaining Asbestos Transite Pipe Encased in Concrete South of Fence Coal Transfer House Pad AA-28 AST-01 AST-10 AST-08 AST-05 AST-09 AST-04 AST-03 AST-02 AST-07 AST-06 AA-14 Trench 02 AST-17 AST-16 AST-15 AST-13 AST-12 AST-11 JRB-01 JRB-02 JRB-03 JRB-04 JRB-05 JRB-06 JRB-07 JRB-08 JRB-09 JRB-10 AA-10 AA-40 CF-13 DP-02 AA-3 NTO-03 NTO-04 NTO-05 NTO-06 NTO-07 NTO-08 NTO-09 CONSTRUCTION OFFICE HQ-15 AA-7 NTO-01 NTO-02 NTO-10 AST-14 LEGEND Approximate Site Boundary Soil Boring, July 2021HQ-1 Coal Sample Soil Boring, July 2021HQ-30 Shallow Soil Boring, September 2022 Coal Area Confirmation Sample, September 2023 Soil Sample, September 2022DP-01 CF-01 AA-6 Test Pit, July 2021Pit 1 Post-Excavation Former Coal Storage Area Soil Sample, May 2023CP-01 Groundwater Monitoring Well, November 2022PD-01 Former UST, Cyanide & Mercury Area Soil Boring, September 2022AA-1AST Area Confirmation Sample, June 2023AST-01 Excavation Confirmation Sample, June 2023 Post-Excavation Former Coal Storage Area Soil Sample, August 2023CP-03-02NW Additional Confirmation Sample, September 2023AST-11 Former AST Area Investigative Trenches Sanitary Sewer Line Water Line High-Pressure Gas LineGAS Limit of Additional Excavation Limit of AST Area Excavation Limit of Coal Area Excavation Former Coal Storage Area Direct-Push Soil Sample Location, August 2023JRB-01 Trench Sample, July 2021Trench 01 Decommissioned UST Groundwater Monitoring WellMW-1 Trench Sample, September 2023NTO-01 Soil Sample used in Risk Evaluation - Arsenic onlyAA-24 Soil Sample used in Risk EvaluationAA-6 GOOGLE EARTH (2023)IMAGE SOURCE: PO S T - R E M O V A L A C T I O N R E M A I N I N G S U R F A C E / S H A L L O W S O I L ( 0 - 1 0 F E E T B G S ) SA M P L E L O C A T I O N S FI G U R E T I T L E DO C U M E N T T I T L E CL I E N T LO C A T I O N 2/24/25 PROJECT NUMBER DATE AS SHOWNSCALE DJLDESIGNED BY CDAPPROVED BY SRMDRAWN BY FIGURE NUMBER 2064-0003 3 7963 Douglas Dr Park City, UT 84098 Phone: 801-450-8060 www.hillwestut.com ill Environmental H estW RO C K Y M O U N T A I N P O W E R 12 2 3 W E S T N O R T H T E M P L E S T R E E T SA L T L A K E C I T Y , U T A H f3 _ A r e a A - S h a l l o w A r s e n i c & L e a d A r e a _ r 5 PO W E R D I S T R I C T R E D E V E L O P M E N T P R O J E C T – V C P A R E A A RE M A I N I N G A R S E N I C A N D L E A D R I S K E V A L U A T I O N - R E V I S E D F I N A L N 0 200100 SCALE FEET ATTACHMENT A SURFACE SOIL – ARSENIC INPUT DATA AND UCL OUTPUT (EPC) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 A B C D E F G Sample ID Sample Date Sample Depth (feet) Arsenic D_Arsenic AA-6-0 09/12/22 0-0.167 3.45 1 Northwest Section AA-6-0 DUP 09/12/22 0-0.167 3.50 1 AA-7-0 09/12/22 0-0.167 4.52 1 AA-8-0 09/12/22 0-0.167 7.07 1 AA-9-0 09/12/22 0-0.167 4.56 1 AA-10-0 09/12/22 0-0.167 3.46 1 AA-11-0 09/12/22 0-0.167 3.96 1 DP-01 09/12/22 2-3 8.11 1 DP-02 09/12/22 2-3 20.0 1 AA-30-0 09/13/22 0-0.167 8.43 1 Northeast Section AA-30-0 DUP 09/13/22 0-0.167 7.94 1 AA-31-0 09/13/22 0-0.167 3.37 1 AA-32-0 09/13/22 0-0.167 6.24 1 AA-33-0 09/14/22 0-0.167 9.31 1 AA-33-0 DUP 09/14/22 0-0.167 7.83 1 AA-34-0 09/14/22 0-0.167 5.04 1 AA-35-0 09/14/22 0-0.167 8.49 1 AA-36-0 09/14/22 0-0.167 5.64 1 AA-37-0 09/14/22 0-0.167 4.59 1 AA-38-0 09/14/22 0-0.167 5.97 1 AA-39-0 09/14/22 0-0.167 9.15 1 AA-40-0 09/14/22 0-0.167 10.1 1 AA-15-0 09/13/22 0-0.167 13.1 1 AST Area 2023 AA-15-0 DUP 09/13/22 0-0.167 13.5 1 AA-26-0 09/13/22 0-0.167 12.2 1 AA-27-0 09/13/22 0-0.167 12.1 1 AA-27-0 DUP 09/13/22 0-0.167 16.0 1 AA-28-0 09/13/22 0-0.167 17.2 1 AA-20-0 09/13/22 0-0.167 21.2 1 AA-21-0 09/13/22 0-0.167 12.9 1 AA-22-0 09/13/22 0-0.167 16.2 1 AA-24-0 09/13/22 0-0.167 15.2 1 AA-24-0 DUP 09/13/22 0-0.167 19.4 1 AA-12-0 09/13/22 0-0.167 15.0 1 Coal Area 2023 AA-12-0 DUP 09/13/22 0-0.167 15.9 1 A B C D E F G H I J K L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 User Selected OptionsUser Selected Options Date/Time of ComputationDate/Time of ComputationDate/Time of Computation ProUCL 5.2 3/5/2024 10:13:39 AMProUCL 5.2 3/5/2024 10:13:39 AMProUCL 5.2 3/5/2024 10:13:39 AM From FileFrom File Arsenic, UCL data set, 0-2 feet - Area A, ver2.xlsArsenic, UCL data set, 0-2 feet - Area A, ver2.xlsArsenic, UCL data set, 0-2 feet - Area A, ver2.xlsArsenic, UCL data set, 0-2 feet - Area A, ver2.xlsArsenic, UCL data set, 0-2 feet - Area A, ver2.xls Full PrecisionFull Precision OFF Confidence CoefficientConfidence CoefficientConfidence Coefficient 95% Number of Bootstrap OperationsNumber of Bootstrap OperationsNumber of Bootstrap Operations 2000 Total Number of ObservationsTotal Number of ObservationsTotal Number of Observations 35 Number of Distinct ObservationsNumber of Distinct ObservationsNumber of Distinct Observations 35 Number of Missing ObservationsNumber of Missing ObservationsNumber of Missing Observations 0 Minimum 3.37 Mean 10.02 Maximum 21.2 Median 8.49 SD 5.327 Std. Error of MeanStd. Error of Mean 0.9 Coefficient of VariationCoefficient of Variation 0.532 Skewness 0.492 Shapiro Wilk Test StatisticShapiro Wilk Test StatisticShapiro Wilk Test Statistic 0.92 1% Shapiro Wilk Critical Value1% Shapiro Wilk Critical Value1% Shapiro Wilk Critical Value 0.91 Data appear Normal at 1% Significance LevelData appear Normal at 1% Significance LevelData appear Normal at 1% Significance LevelData appear Normal at 1% Significance Level Lilliefors Test StatisticLilliefors Test Statistic 0.127 1% Lilliefors Critical Value1% Lilliefors Critical Value1% Lilliefors Critical Value 0.172 Data appear Normal at 1% Significance LevelData appear Normal at 1% Significance LevelData appear Normal at 1% Significance LevelData appear Normal at 1% Significance Level 95% Student's-t UCL95% Student's-t UCL 11.54 95% Adjusted-CLT UCL (Chen-1995)95% Adjusted-CLT UCL (Chen-1995)95% Adjusted-CLT UCL (Chen-1995)95% Adjusted-CLT UCL (Chen-1995)11.58 95% Modified-t UCL (Johnson-1978)95% Modified-t UCL (Johnson-1978)95% Modified-t UCL (Johnson-1978)95% Modified-t UCL (Johnson-1978)11.55 A-D Test StatisticA-D Test Statistic 0.547 5% A-D Critical Value5% A-D Critical Value 0.753 Detected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance Level K-S Test StatisticK-S Test Statistic 0.106 5% K-S Critical Value5% K-S Critical Value 0.15 Detected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance LevelDetected data appear Gamma Distributed at 5% Significance Level k hat (MLE)k hat (MLE)3.48 k star (bias corrected MLE)k star (bias corrected MLE)k star (bias corrected MLE)3.201 Theta hat (MLE)Theta hat (MLE)2.879 Theta star (bias corrected MLE)Theta star (bias corrected MLE)Theta star (bias corrected MLE)3.13 nu hat (MLE)nu hat (MLE)243.6 nu star (bias corrected)nu star (bias corrected)nu star (bias corrected)224 MLE Mean (bias corrected)MLE Mean (bias corrected)MLE Mean (bias corrected)10.02 MLE Sd (bias corrected)MLE Sd (bias corrected)MLE Sd (bias corrected)5.6 Approximate Chi Square Value (0.05)Approximate Chi Square Value (0.05)Approximate Chi Square Value (0.05)Approximate Chi Square Value (0.05)190.4 Adjusted Level of SignificanceAdjusted Level of SignificanceAdjusted Level of Significance 0.0425 Adjusted Chi Square ValueAdjusted Chi Square ValueAdjusted Chi Square Value 188.9 95% Approximate Gamma UCL95% Approximate Gamma UCL95% Approximate Gamma UCL 11.79 95% Adjusted Gamma UCL95% Adjusted Gamma UCL95% Adjusted Gamma UCL 11.88 Shapiro Wilk Test StatisticShapiro Wilk Test StatisticShapiro Wilk Test Statistic 0.933 10% Shapiro Wilk Critical Value10% Shapiro Wilk Critical Value10% Shapiro Wilk Critical Value 0.944 Data Not Lognormal at 10% Significance LevelData Not Lognormal at 10% Significance LevelData Not Lognormal at 10% Significance LevelData Not Lognormal at 10% Significance Level A B C D E F G H I J K L 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 Lilliefors Test StatisticLilliefors Test Statistic 0.123 10% Lilliefors Critical Value10% Lilliefors Critical Value10% Lilliefors Critical Value 0.136 Data appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance Level Minimum of Logged DataMinimum of Logged DataMinimum of Logged Data 1.215 Mean of logged DataMean of logged Data 2.154 Maximum of Logged DataMaximum of Logged DataMaximum of Logged Data 3.054 SD of logged DataSD of logged Data 0.574 95% H-UCL95% H-UCL 12.38 90% Chebyshev (MVUE) UCL90% Chebyshev (MVUE) UCL90% Chebyshev (MVUE) UCL 13.23 95% Chebyshev (MVUE) UCL95% Chebyshev (MVUE) UCL95% Chebyshev (MVUE) UCL 14.64 97.5% Chebyshev (MVUE) UCL97.5% Chebyshev (MVUE) UCL97.5% Chebyshev (MVUE) UCL 16.6 99% Chebyshev (MVUE) UCL99% Chebyshev (MVUE) UCL99% Chebyshev (MVUE) UCL 20.45 95% CLT UCL95% CLT UCL 11.5 95% BCA Bootstrap UCL95% BCA Bootstrap UCL95% BCA Bootstrap UCL 11.53 95% Standard Bootstrap UCL95% Standard Bootstrap UCL95% Standard Bootstrap UCL 11.46 95% Bootstrap-t UCL95% Bootstrap-t UCL 11.58 95% Hall's Bootstrap UCL95% Hall's Bootstrap UCL95% Hall's Bootstrap UCL 11.51 95% Percentile Bootstrap UCL95% Percentile Bootstrap UCL95% Percentile Bootstrap UCL 11.49 90% Chebyshev(Mean, Sd) UCL90% Chebyshev(Mean, Sd) UCL90% Chebyshev(Mean, Sd) UCL 12.72 95% Chebyshev(Mean, Sd) UCL95% Chebyshev(Mean, Sd) UCL95% Chebyshev(Mean, Sd) UCL 13.94 97.5% Chebyshev(Mean, Sd) UCL97.5% Chebyshev(Mean, Sd) UCL97.5% Chebyshev(Mean, Sd) UCL 15.64 99% Chebyshev(Mean, Sd) UCL99% Chebyshev(Mean, Sd) UCL99% Chebyshev(Mean, Sd) UCL 18.98 95% Student's-t UCL95% Student's-t UCL 11.54 Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL. Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies. However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician. ATTACHMENT B CONSTRUCTION WORKER SITE-SPECIFIC RSLs - CALCULATOR INPUT DATA AND OUTPUTS Output generated 06MAY2024:14:44:54 Site-specific 1 Construction Worker Inputs Variable Construction Worker Soil - Unpaved Default Value Site-Specific Value LR (length of road segment) ft 147.58077 147.58077 A (PEF Dispersion Constant)12.9351 12.9351 AR (surface area of contaminated road segment) m 2 274.21393 274.21393 A (VF Dispersion Constant)2.4538 2.4538 W R (width of road segment) ft 20 20 B (PEF Dispersion Constant)5.7383 5.7383 B (VF Dispersion Constant)17.5660 17.5660 C (PEF Dispersion Constant)71.7711 71.7711 C (VF Dispersion Constant)189.0426 189.0426 distance (road length) km/day 0.04498 0.04498 ds (average source depth) m .1.5 DW con (days worked - construction worker) days/week 5 5 EW con (weeks worked - construction worker) weeks/year 50 50 FD Unitless Dispersion Correction Factor 0.185837208 0.185837208 foc (fraction organic carbon in soil) g/g 0.006 0.006 Mdry (road surface material moisture content under dry, uncontrolled conditions) %0.2 0.2 Number of cars .14 Number of trucks .6 total number of vehicles .20 n (total soil porosity) L pore /L soil 0.43396 0.43396 pb (VFulim-sc dry soil bulk density) g/cm 3 1.5 1.5 pb (VFmlim-sc dry soil bulk density) g/cm 3 1.5 1.5 p (days per year with at least .01" of precipitation) days/year .20 ps (soil particle density) g/cm 3 2.65 2.65 Q/Csr (g/m2-s per kg/m 3)23.01785 23.01785 Q/Cvol (g/m2-s per kg/m 3)14.31407 12.552069848280 Q/Csa (g/m2-s per kg/m 3)14.31407 12.552069848280 s (road surface silt content) %8.5 8.5 Output generated 06MAY2024:14:44:54 Site-specific 2 Construction Worker Inputs Variable Construction Worker Soil - Unpaved Default Value Site-Specific Value As (PEF sc - acres)0.5 0.5 As (VFmlim-sc acres)0.5 1 As (VFulim-sc acres)0.5 1 AFcon (skin adherence factor - construction worker) mg/cm 2 0.3 0.3 ATcon (averaging time - construction worker) days 365 365 ATcon-a (averaging time - construction worker) days 350 350 BW con (body weight - construction worker) kg 80 80 EDcon (exposure duration - construction worker) yr 1 1 EFcon (exposure frequency - construction worker) day/yr 250 250 ETcon (exposure time - construction worker) hr/day 8 8 THQ (target hazard quotient) unitless 0.1 1 IRScon (soil ingestion rate - construction worker) mg/day 330 330 LT (lifetime) yr 70 70 SAcon (surface area - construction worker) cm 2/day 3527 3527 TR (target cancer risk) unitless 1.0E-06 1.0E-06 tc (overall duration of construction) hours 8400 8400 Tc (overall duration of construction) s 30240000 30240000 Tw (groundwater temperature) C 25 25 Theta a (air-filled soil porosity) L air/L soil 0.28396 0.28396 Theta w (water-filled soil porosity) L water /L soil 0.15 0.15 Tt (overall duration of traffic) s 7200000 7200000 VFmlim-sc (volitization factor) m 3 air/kgsoil .907.78278783055 VKT (sum of fleet vehicle km traveled) km .224.89999999999 Tons per car .3 W (mean vehicle weight) tons .7.5 Tons per truck .18 Output generated 06MAY2024:14:44:54 Site-specific 3 Construction Worker Risk-Based Regional Screening Levels (RSL) for Soil - Unpaved Road Traffic Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user guide; U = user provided; ca = cancer; nc = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; max = ceiling limit exceeded; sat = Csat exceeded. Subchronic toxicity values will be used where available. RfC and RfD references will be followed by either 'Chronic' or 'Subchronic' to indicate which toxicity value was used. Chemical CAS Number Mutagen?Volatile? Chemical Type SFo(mg/kg-day)-1 SFoRef IUR (ug/m 3)-1 IUR Ref RfD (mg/kg-day) RfD Ref RfC (mg/m 3) RfC Ref GIABS ABS RBA Soil Saturation Concentration (mg/kg) Arsenic, Inorganic 7440-38-2 No No Inorganics 1.50E+00 I 4.30E-03 I 3.00E-04 I /Chronic 1.50E-05 C /Chronic 1 0.03 0.6 - S (mg/L) Koc\ (cm 3/g) Kd\ (cm 3/g) HLC (atm-m 3/mole) Henry's Law Constant Used in Calcs (unitless) H` and HLC Ref Normal Boiling Point BP (K) BP Ref Critical Temperature TC\ (K) TC\ Ref Chemical Type Dia\ (cm 2/s) Diw \ (cm 2/s) DA\ (cm 2/s) Particulate Emission Factor (m 3/kg) Volatilization Factor Unlimited Reservoir (m 3/kg) --2.90E+01 --888.15 PHYSPROP 1673 CRC INORGANIC ---1.43E+06 - Volatilization Factor Mass Limit (m 3/kg) Volatilization Factor Selected (m 3/kg) Ingestion SL TR=1E-06 (mg/kg) Dermal SL TR=1E-06 (mg/kg) Inhalation SL TR=1E-06 (mg/kg) Carcinogenic SL TR=1E-06 (mg/kg) Ingestion SL THQ=1 (mg/kg) Dermal SL THQ=1 (mg/kg) Inhalation SL THQ=1 (mg/kg) Noncarcinogenic SL THI=1 (mg/kg) Screening Level (mg/kg) --2.75E+01 1.72E+02 1.02E+02 1.93E+01 1.70E+02 1.06E+03 9.03E+01 5.58E+01 1.93E+01 ca** Output generated 06MAY2024:14:44:54 Site-specific 4 Construction Worker Inputs Variable Construction Worker Soil - Other Default Value Site-Specific Value Ac-doz (areal extent of dozing) acres ..5 Aexcav (area of excavation site) m 2 ..25 Ac-grade (areal extent of grading) acres ..25 A (PEF Dispersion Constant)2.4538 2.4538 Asurf (areal extent of site) m 2 2023.43 4046.86 Atill (areal extent of tilling) acres ..25 A (VF Dispersion Constant)2.4538 2.4538 Bl-doz (dozing blade length) m .3.28 Bl-grade (grading blade length) m .3.67 B (PEF Dispersion Constant)17.5660 17.5660 B (VF Dispersion Constant)17.5660 17.5660 C (PEF Dispersion Constant)189.0426 189.0426 C (VF Dispersion Constant)189.0426 189.0426 dexcav (average depth of excavation site) m .1.5 ds (average source depth) m .1.5 DW con (days worked - construction worker) days/week 5 5 EW con (weeks worked - construction worker) weeks/year 50 50 FD Unitless Dispersion Correction Factor 0.185837208 0.185837208 foc (fraction organic carbon in soil) g/g 0.006 0.006 F(x) (function dependant on U m/Ut derived using Cowherd et al. (1985))0.194 0.194 J`T (g/m2s).0.0000006618627 Mdoz (dust emitted from dozing operations) g .54.993992976612 Mexcav (dust emitted from excavation soil dumping) g .0.1536462737129 Mgrade (dust emitted from grading operations) g .361.14148839237 Mm-doz (Gravimetric soil moisture content) %7.9 7.9 Mm-excav (Gravimetric soil moisture content) %12 12 Mtill (dust emitted from tilling operations) g .1260.8383122094 Mwind (dust emitted by wind erosion) g 8803.91354585 17607.827091700 Output generated 06MAY2024:14:44:54 Site-specific 5 Construction Worker Inputs Variable Construction Worker Soil - Other Default Value Site-Specific Value NA-doz (number of times site was dozed).3 NA-dump (number of times soil is dumped)2 2 NA-grade (number of times site was graded).3 NA-till (number of times soil is tilled)2 2 n (total soil porosity) L pore /L soil 0.43396 0.43396 pb (dry soil bulk density) g/cm 3 1.5 1.5 pb (dry soil bulk density - mass limit) g/cm 3 1.5 1.5 ps (soil particle density) g/cm 3 2.65 2.65 Q/Csa (g/m2-s per kg/m 3)14.31407 12.552069848280 Q/Cvol (g/m2-s per kg/m 3)14.31407 12.552069848280 Q/Csa (g/m2-s per kg/m 3)14.31407 12.552069848280 psoil (density) g/cm 3 - chemical-specific 1.68 1.68 As (VFmlim-sc acres)0.5 1 As (VFulim-sc acres)0.5 1 sdoz (soil silt content) %6.9 6.9 AFcon (skin adherence factor - construction worker) mg/cm 2 0.3 0.3 ATcon (averaging time - construction worker) days 365 365 ATcon-a (averaging time - construction worker) days 350 350 BW con (body weight - construction worker) kg 80 80 EDcon (exposure duration - construction worker) yr 1 1 EFcon (exposure frequency - construction worker) day/yr 250 250 ETcon (exposure time - construction worker) hr/day 8 8 THQ (target hazard quotient) unitless 0.1 1 IRScon (soil ingestion rate - construction worker) mg/day 330 330 LT (lifetime) yr 70 70 SAcon (surface area - construction worker) cm 2/day 3527 3527 TR (target cancer risk) unitless 1.0E-06 1.0E-06 Sdoz (dozing speed) kph 11.4 11.4 Output generated 06MAY2024:14:44:54 Site-specific 6 Construction Worker Inputs Variable Construction Worker Soil - Other Default Value Site-Specific Value Sgrade (grading speed) kph 11.4 11.4 still (soil silt content) %18 18 tc (overall duration of construction) hours 8400 8400 Tc (overall duration of construction) s 30240000 30240000 Theta a (air-filled soil porosity) L air/L soil 0.28396 0.28396 Theta w (water-filled soil porosity) L water /L soil 0.15 0.15 T (time over which traffic occurs) s 7200000 7200000 Tt (overall duration of traffic) s 7200000 7200000 Um (mean annual wind speed) m/s 4.69 4.69 Ut (equivalent threshold value) m/s 11.32 11.32 VFmlim-sc (volitization factor) m 3 air/kgsoil .907.78278783055 VKTdoz (sum of fleet vehicle km traveled) km .1.8507621951219 VKTgrade (sum of fleet vehicle km traveled) km .0.8270435967302 V (fraction of vegetative cover)0 0 Output generated 06MAY2024:14:44:54 Site-specific 7 Construction Worker Risk-Based Regional Screening Levels (RSL) for Soil - Other Construction Activities Key: I = IRIS; P = PPRTV; O = OPP; A = ATSDR; T = ATSDR DRAFT; C = Cal EPA; X = PPRTV Screening Level; H = HEAST; D = OW; R = ORD; N = WI; W = TEF applied; E = RPF applied; G = see user guide; U = user provided; ca = cancer; nc = noncancer; * = where: nc SL < 100X ca SL; ** = where nc SL < 10X ca SL; SSL values are based on DAF=1; max = ceiling limit exceeded; sat = Csat exceeded. Subchronic toxicity values will be used where available. RfC and RfD references will be followed by either 'Chronic' or 'Subchronic' to indicate which toxicity value was used. Chemical CAS Number Mutagen?Volatile? Chemical Type SFo(mg/kg-day)-1 SFoRef IUR (ug/m 3)-1 IUR Ref RfD (mg/kg-day) RfD Ref RfC (mg/m 3) RfC Ref GIABS ABS RBA Soil Saturation Concentration (mg/kg) Arsenic, Inorganic 7440-38-2 No No Inorganics 1.50E+00 I 4.30E-03 I 3.00E-04 I /Chronic 1.50E-05 C /Chronic 1 0.03 0.6 - S (mg/L) Koc\ (cm 3/g) Kd\ (cm 3/g) HLC (atm-m 3/mole) Henry's Law Constant Used in Calcs (unitless) H` and HLC Ref Normal Boiling Point BP (K) BP Ref Critical Temperature TC\ (K) TC\ Ref Chemical Type Dia\ (cm 2/s) Diw \ (cm 2/s) DA\ (cm 2/s) Particulate Emission Factor (m 3/kg) Volatilization Factor Unlimited Reservoir (m 3/kg) --2.90E+01 --888.15 PHYSPROP 1673 CRC INORGANIC ---1.02E+08 - Volatilization Factor Mass Limit (m 3/kg) Volatilization Factor Selected (m 3/kg) Ingestion SL TR=1E-06 (mg/kg) Dermal SL TR=1E-06 (mg/kg) Inhalation SL TR=1E-06 (mg/kg) Carcinogenic SL TR=1E-06 (mg/kg) Ingestion SL THQ=1 (mg/kg) Dermal SL THQ=1 (mg/kg) Inhalation SL THQ=1 (mg/kg) Noncarcinogenic SL THI=1 (mg/kg) Screening Level (mg/kg) --2.75E+01 1.72E+02 7.28E+03 2.36E+01 1.70E+02 1.06E+03 6.43E+03 1.43E+02 2.36E+01 ca** ATTACHMENT C CONSTRUCTION WORKER – ARSENIC AND LEAD INPUT DATA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 A B C D E F G Sample ID Sample Date Sample Depth (feet) Arsenic D_Arsenic AA-1-5 09/12/22 5-6 13.0 1 Northwest Section AA-1-9 09/12/22 9-10 19.1 1 AA-3-6 09/12/22 6-7 30.5 1 AA-6-0 09/12/22 0-0.167 3.45 1 AA-6-0 DUP 09/12/22 0-0.167 3.50 1 AA-7-0 09/12/22 0-0.167 4.52 1 AA-8-0 09/12/22 0-0.167 7.07 1 AA-9-0 09/12/22 0-0.167 4.56 1 AA-10-0 09/12/22 0-0.167 3.46 1 AA-11-0 09/12/22 0-0.167 3.96 1 AA-10-4 09/12/22 4-5 6.75 1 AA-11-4 09/12/22 4-5 12.1 1 AA-6-4 09/12/22 4-5 8.53 1 AA-7-4 09/12/22 4-5 42.3 1 AA-8-4 09/12/22 4-5 13.70 1 AA-9-4 09/12/22 4-5 8.50 1 DP-01 09/12/22 2-3 8.11 1 DP-02 09/12/22 2-3 20.0 1 NTO-03 Bottom 09/12/23 3 - 4 6.91 1 NTO-03 North Wall 09/12/23 3 - 4 93.8 1 NTO-03 South Wall 09/12/23 3 - 4 73.9 1 NTO-04 B 09/12/23 3 - 4 22.4 1 NTO-04 N 09/12/23 3 - 4 39.1 1 NTO-04 S 09/12/23 3 - 4 80.0 1 NTO-05 B 09/12/23 3 - 4 54.8 1 NTO-05 N 09/12/23 3 - 4 45.2 1 NTO-05 S 09/12/23 3 - 4 81.3 1 NTO-06 B 09/12/23 3 - 4 42.9 1 NTO-06 N 09/12/23 3 - 4 45.1 1 NTO-06 S 09/12/23 3 - 4 6.17 1 NTO-07 B 09/12/23 3 - 4 48.1 1 NTO-07 E 09/12/23 3 - 4 33.5 1 NTO-07 Dup E 09/12/23 3 - 4 33.1 1 NTO-07 W 09/12/23 3 - 4 31.6 1 NTO-08 B 09/12/23 3 - 4 17.6 1 NTO-08 E 09/12/23 3 - 4 11.5 1 NTO-08 W 09/12/23 3 - 4 12.8 1 NTO-09 B 09/12/23 3 - 4 9.48 1 NTO-09 E 09/12/23 3 - 4 10.6 1 NTO-09 W 09/12/23 3 - 4 9.99 1 NTO-10 B 09/12/23 3 - 4 7.22 1 NTO-10 Dup B 09/12/23 3 - 4 4.58 1 NTO-10 E 09/12/23 3 - 4 13.2 1 NTO-10 W 09/12/23 3 - 4 10.9 1 HQ-12 @ 8'-10' BGS 06/15/21 8 - 10 3.38 1 HQ-13 @ 8'-10' 06/15/21 8 - 10 6.13 1 HQ-15 @ 8'-10' BGS 06/15/21 8 - 10 15.0 1 HQ-17 @ 8'-11' 06/15/21 8 - 11 11.5 1 PD-06 11/09/22 9-10 6.81 1 AA-30-0 09/13/22 0-0.167 8.43 1 Northeast Section 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 A B C D E F G AA-30-0 DUP 09/13/22 0-0.167 7.94 1 AA-31-0 09/13/22 0-0.167 3.37 1 AA-32-0 09/13/22 0-0.167 6.24 1 AA-33-0 09/14/22 0-0.167 9.31 1 AA-33-0 DUP 09/14/22 0-0.167 7.83 1 AA-34-0 09/14/22 0-0.167 5.04 1 AA-35-0 09/14/22 0-0.167 8.49 1 AA-36-0 09/14/22 0-0.167 5.64 1 AA-37-0 09/14/22 0-0.167 4.59 1 AA-38-0 09/14/22 0-0.167 5.97 1 AA-39-0 09/14/22 0-0.167 9.15 1 AA-40-0 09/14/22 0-0.167 10.1 1 AA-30-4 09/13/22 4-5 27.7 1 AA-31-4 09/13/22 4-5 5.33 1 AA-32-4 09/13/22 4-5 7.43 1 AA-33-4 09/14/22 4-5 19.3 1 AA-34-4 09/14/22 4-5 18.2 1 AA-35-4 09/14/22 4-5 11.9 1 AA-36-4 09/14/22 4-5 5.10 1 AA-37-4 09/14/22 4-5 7.60 1 AA-38-4 09/14/22 4-5 10.8 1 AA-39-4 09/14/22 4-5 12.5 1 AA-40-4 09/14/22 4-5 13.2 1 HQ-02 Soil 8'-10' BGS 06/14/21 8 - 10 5.42 1 HQ-04 Soil 8'-10' BGS 06/14/21 8 - 10 7.46 1 HQ-06 Soil 8'-10' BGS 06/14/21 8 - 10 34.8 1 HQ-11 @ 7'-8' BGS 06/15/21 7 - 8 9.68 1 HQ-24 @ 9'-10' 06/16/21 9 - 10 27.5 1 AST Area 2023 HQ-25 @ 7-9' 06/16/21 7 - 9 4.55 1 HQ-26 @ 3-6' 06/16/21 3 - 6 4.70 1 HQ-29 @ 4.5'-5.0' BGS 06/17/21 4.5 - 5.0 9.31 1 HQ-48 @ 7'-9' BGS 06/22/21 7 - 9 3.96 1 HQ-51 @ 6'-8' BGS 06/23/21 6 - 8 19.9 1 AA-15-0 09/13/22 0-0.167 13.1 1 AA-15-0 DUP 09/13/22 0-0.167 13.5 1 AA-15-4 09/13/22 4-5 9.61 1 AA-26-0 09/13/22 0-0.167 12.2 1 AA-27-0 09/13/22 0-0.167 12.1 1 AA-27-0 DUP 09/13/22 0-0.167 16.0 1 AA-28-0 09/13/22 0-0.167 17.2 1 AA-20-0 09/13/22 0-0.167 21.2 1 AA-21-0 09/13/22 0-0.167 12.9 1 AA-22-0 09/13/22 0-0.167 16.2 1 AA-24-0 09/13/22 0-0.167 15.2 1 AA-24-0 DUP 09/13/22 0-0.167 19.4 1 AA-18-4 09/13/22 4-5 9.52 1 AA-20-4 09/13/22 4-5 12.7 1 AA-21-4 09/13/22 4-5 10.0 1 AA-22-4 09/13/22 4-5 4.04 1 AA-23-4 09/13/22 4-5 1.33 1 AA-24-4 09/13/22 4-5 35.0 1 AA-25-4 09/13/22 4-5 20.8 1 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 A B C D E F G AA-26-4 09/13/22 4-5 48.3 1 AA-27-4 09/13/22 4-5 7.03 1 AA-28-4 09/13/22 4-5 9.22 1 AA-29-4 09/13/22 4-5 12.0 1 PD-10 11/09/22 8-9 13.0 1 PD-11 11/10/22 7.5-8.5 3.45 1 PD-12 11/10/22 8-9 5.23 1 AA-14-01 Bottom 06/21/23 6 7.76 1 AA-14-02 North Wall 06/21/23 6 6.42 1 AA-14-03 East Wall 06/21/23 6 10.0 1 AA-14-04 South Wall 06/21/23 6 12.7 1 AA-14-05 West Wall 06/21/23 6 7.19 1 AA-16-01 Bottom 06/26/23 6 10.8 1 AA-16-01 Bottom DUP 06/26/23 6 4.52 1 AA-16-02 North Wall 06/26/23 6 13.8 1 AA-16-03 East Wall 06/26/23 6 11.3 1 AA-16-04 South Wall 06/26/23 6 20.3 1 AA-16-05 West Wall 06/26/23 6 12.1 1 AA-19-01 Bottom 06/27/23 6 11.5 1 AA-19-01 Bottom DUP 06/27/23 6 9.40 1 AA-19-02 North Wall 06/27/23 6 18.6 1 AA-19-03 East Wall 06/27/23 6 50.7 1 AA-19-04 South Wall 06/27/23 6 21.2 1 AA-19-05 West Wall 06/27/23 6 60.3 1 Trench-02-01 Bottom 06/27/23 6 7.03 1 Trench-02-01 Bottom DUP 06/27/23 6 7.82 1 Trench-02-02 North Wall 06/27/23 6 8.86 1 Trench-02-03 East Wall 06/27/23 6 6.14 1 Trench-02-04 South Wall 06/27/23 6 6.33 1 Trench-02-05 West Wall 06/27/23 6 8.96 1 AST-01 06/28/23 2 11.9 1 AST-02 06/28/23 2 5.29 1 AST-03 06/28/23 2 18.5 1 AST-04 06/28/23 2 16.3 1 AST-05 06/28/23 2 8.43 1 AST-06 06/28/23 2 9.86 1 AST-09 06/28/23 2 11.7 1 AST-11 Duplicate AST-09 06/28/23 2 6.73 1 AST-10 06/28/23 2 12.2 1 AST-11 East Trench 02 09/01/23 5 2.47 1 AST-11 East Dup AST-11 09/01/23 5 2.71 1 AST-12 North Trench 02 09/01/23 5 0.925 1 AST-13 East Wall Foundation West 09/01/23 5 1.01 1 AST-14 East Wall Foundation East 09/01/23 5 10.8 1 AST-15 West Wall Foundation East 09/01/23 5 2.71 1 AST-16 West Wall Foundation West 09/01/23 5 1.44 1 AST-17 Transformer Pad 09/01/23 5 4.68 1 HQ-26 @ 3-6' 06/16/21 3 - 6 4.70 1 Trench-01 @ 4-5' 06/16/21 4 - 5 17.5 1 HQ-31 @ 7'-9' BGS 06/17/21 7 - 9 22.0 1 Coal Area 2023 HQ-36 @ 4.5'-7' BGS 06/18/21 4.5 - 7 16.2 1 PD-07 11/08/22 8-9 1.83 1 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 A B C D E F G PD-08 11/10/22 7.5-8.5 3.12 1 PD-09 11/08/22 9-10 0.918 0 CP-01 NW Corner 05/08/23 4-5 6.46 1 CP-02 North Center 05/08/23 4-5 18.4 1 CP-03-01 NW 08/14/23 2.8-4.0 17.6 1 CP-03-02 NE 08/14/23 2.8-4.0 4.76 1 CP-03-03 SW 08/14/23 2.8-4.0 18.3 1 CP-04 SE Corner 05/08/23 2.5-3.5 23.7 1 CP-05 South Center 05/08/23 5-6 15.5 1 CP-06 SW Corner 05/08/23 5-6 6.60 1 SH-01W 08/17/23 5-6 8.42 1 SH-02E 08/17/23 5-6 12.8 1 CF-01 Coal Foundation North 09/01/23 5-6 13.4 1 CF-02 Grizzly/Conveyor South 09/01/23 5-6 7.07 1 CF-03 Conduit to Stacker 09/01/23 5-6 3.68 1 CF-04 Stacker House 09/01/23 5-6 8.15 1 CF-05 Conduit to Loadout 09/01/23 5-6 2.68 1 CF-06 Conduit South South 09/01/23 5-6 4.85 1 CF-09 Conduit to Tunnel 09/01/23 5-6 5.08 1 CF-07 Loadout 09/01/23 5-6 4.30 1 CF-08 Loadout 09/01/23 5-6 6.78 1 CF-10 SW Corner Foundation 09/01/23 5-6 5.47 1 CF-11 SW Corner Foundation 09/01/23 5-6 9.44 1 CF-12 SW Corner Foundation 09/01/23 5-6 8.42 1 CF-12 Dup 09/01/23 5-6 3.49 1 CF-13 SW Corner 09/01/23 5-6 16.4 1 CF-14 09/01/23 5-6 4.55 1 CF-15 09/01/23 5-6 8.71 1 AA-13-4 09/13/22 4-5 13.4 1 AA-12-0 09/13/22 0-0.167 15.0 1 AA-12-0 DUP 09/13/22 0-0.167 15.9 1 AA-12-4 09/13/22 4-5 18.4 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 A B C D E F G Sample ID Sample Date Sample Depth (feet) Lead D_Lead AA-1-5 09/12/22 5-6 62.9 1 Northwest Section AA-1-9 09/12/22 9-10 41.2 1 AA-3-6 09/12/22 6-7 51.0 1 AA-6-0 09/12/22 0-0.167 7.37 1 AA-6-0 DUP 09/12/22 0-0.167 8.61 1 AA-7-0 09/12/22 0-0.167 85.5 1 AA-8-0 09/12/22 0-0.167 4.64 1 AA-9-0 09/12/22 0-0.167 2.82 1 AA-10-0 09/12/22 0-0.167 2.70 1 AA-11-0 09/12/22 0-0.167 24.90 1 AA-11-4 09/12/22 4-5 170 1 AA-6-4 09/12/22 4-5 9.02 1 AA-7-4 09/12/22 4-5 438 1 AA-8-4 09/12/22 4-5 359 1 AA-9-4 09/12/22 4-5 16.1 1 DP-01 09/12/22 2-3 243 1 DP-02 09/12/22 2-3 5.82 1 NTO-03 Bottom 09/12/23 3 - 4 14.7 1 NTO-03 North Wall 09/12/23 3 - 4 784 1 NTO-03 South Wall 09/12/23 3 - 4 647 1 NTO-04 B 09/12/23 3 - 4 177 1 NTO-04 N 09/12/23 3 - 4 423 1 NTO-04 S 09/12/23 3 - 4 662 1 NTO-05 B 09/12/23 3 - 4 558 1 NTO-05 N 09/12/23 3 - 4 592 1 NTO-06 B 09/12/23 3 - 4 554 1 NTO-06 N 09/12/23 3 - 4 398 1 NTO-06 S 09/12/23 3 - 4 3.84 1 NTO-07 B 09/12/23 3 - 4 560 1 NTO-07 E 09/12/23 3 - 4 357 1 NTO-07 Dup E 09/12/23 3 - 4 371 1 NTO-07 W 09/12/23 3 - 4 342 1 NTO-08 B 09/12/23 3 - 4 314 1 NTO-08 E 09/12/23 3 - 4 160 1 NTO-08 W 09/12/23 3 - 4 190 1 NTO-09 B 09/12/23 3 - 4 250 1 NTO-09 E 09/12/23 3 - 4 183 1 NTO-09 W 09/12/23 3 - 4 295 1 NTO-10 B 09/12/23 3 - 4 118 1 NTO-10 E 09/12/23 3 - 4 145 1 NTO-10 W 09/12/23 3 - 4 115 1 HQ-12 @ 8'-10' BGS 06/15/21 8 - 10 7.86 1 HQ-13 @ 8'-10' 06/15/21 8 - 10 9.26 1 HQ-15 @ 8'-10' BGS 06/15/21 8 - 10 7.39 1 HQ-17 @ 8'-11' 06/15/21 8 - 11 15.9 1 PD-06 11/09/22 9-10 20.4 1 AA-30-0 09/13/22 0-0.167 67.6 1 Northeast Section AA-30-0 DUP 09/13/22 0-0.167 51.9 1 AA-31-0 09/13/22 0-0.167 35.5 1 AA-32-0 09/13/22 0-0.167 85.8 1 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 A B C D E F G AA-33-0 09/14/22 0-0.167 78.3 1 AA-33-0 DUP 09/14/22 0-0.167 76.8 1 AA-34-0 09/14/22 0-0.167 14.3 1 AA-35-0 09/14/22 0-0.167 34.5 1 AA-36-0 09/14/22 0-0.167 61.7 1 AA-37-0 09/14/22 0-0.167 64.6 1 AA-38-0 09/14/22 0-0.167 36.6 1 AA-39-0 09/14/22 0-0.167 61.7 1 AA-40-0 09/14/22 0-0.167 22.8 1 AA-30-4 09/13/22 4-5 49.6 1 AA-31-4 09/13/22 4-5 62.7 1 AA-32-4 09/13/22 4-5 82.3 1 AA-33-4 09/14/22 4-5 66.7 1 AA-34-4 09/14/22 4-5 33.5 1 AA-35-4 09/14/22 4-5 48.2 1 AA-36-4 09/14/22 4-5 242 1 AA-37-4 09/14/22 4-5 108 1 AA-38-4 09/14/22 4-5 74.7 1 AA-39-4 09/14/22 4-5 41.7 1 AA-40-4 09/14/22 4-5 70.3 1 HQ-02 Soil 8'-10' BGS 06/14/21 8 - 10 10.8 1 HQ-04 Soil 8'-10' BGS 06/14/21 8 - 10 36.2 1 HQ-06 Soil 8'-10' BGS 06/14/21 8 - 10 36.3 1 HQ-11 @ 7'-8' BGS 06/15/21 7 - 8 17.6 1 HQ-24 @ 9'-10' 06/16/21 9 - 10 505 1 AST Area 2023 HQ-25 @ 7-9' 06/16/21 7 - 9 9.01 1 HQ-26 @ 3-6' 06/16/21 3 - 6 7.73 1 HQ-29 @ 4.5'-5.0' BGS 06/17/21 4.5 - 5.0 43.9 1 HQ-48 @ 7'-9' BGS 06/22/21 7 - 9 10.4 1 HQ-51 @ 6'-8' BGS 06/23/21 6 - 8 37.4 1 AA-15-0 09/13/22 0-0.167 334 1 AA-15-0 DUP 09/13/22 0-0.167 28.7 1 AA-15-4 09/13/22 4-5 2.3.2 1 AA-26-0 09/13/22 0-0.167 12.2 1 AA-27-0 09/13/22 0-0.167 12.1 1 AA-27-0 DUP 09/13/22 0-0.167 16.0 1 AA-28-0 09/13/22 0-0.167 17.2 1 AA-21-0 09/13/22 0-0.167 12.9 1 AA-22-0 09/13/22 0-0.167 16.2 1 AA-24-0 09/13/22 0-0.167 15.2 1 AA-24-0 DUP 09/13/22 0-0.167 19.4 1 AA-18-4 09/13/22 4-5 42.5 1 AA-20-0 09/13/22 0-0.167 100 1 AA-20-4 09/13/22 4-5 182 1 AA-22-4 09/13/22 4-5 11.0 1 AA-23-4 09/13/22 4-5 8.98 1 AA-25-4 09/13/22 4-5 709 1 AA-27-4 09/13/22 4-5 27.2 1 AA-28-4 09/13/22 4-5 26.1 1 AA-29-4 09/13/22 4-5 33.1 1 PD-10 11/09/22 8-9 39.9 1 PD-11 11/10/22 7.5-8.5 5.06 1 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 A B C D E F G PD-12 11/10/22 8-9 13.4 1 AA-14-01 Bottom 06/21/23 6 39.6 1 AA-14-02 North Wall 06/21/23 6 32.2 1 AA-14-03 East Wall 06/21/23 6 41.5 1 AA-14-04 South Wall 06/21/23 6 40.6 1 AA-14-05 West Wall 06/21/23 6 41.4 1 AA-16-01 Bottom 06/26/23 6 45.4 1 AA-16-01 Bottom DUP 06/26/23 6 39.0 1 AA-16-02 North Wall 06/26/23 6 40.7 1 AA-16-03 East Wall 06/26/23 6 37.8 1 AA-16-04 South Wall 06/26/23 6 61.9 1 AA-16-05 West Wall 06/26/23 6 40.4 1 AA-19-01 Bottom 06/27/23 6 30.3 1 AA-19-01 Bottom DUP 06/27/23 6 37.5 1 AA-19-02 North Wall 06/27/23 6 63.3 1 AA-19-03 East Wall 06/27/23 6 247 1 AA-19-04 South Wall 06/27/23 6 110 1 AA-19-05 West Wall 06/27/23 6 161 1 Trench-02-01 Bottom 06/27/23 6 65.6 1 Trench-02-01 Bottom DUP 06/27/23 6 31.7 1 Trench-02-02 North Wall 06/27/23 6 35.9 1 Trench-02-03 East Wall 06/27/23 6 40.5 1 Trench-02-04 South Wall 06/27/23 6 27.4 1 Trench-02-05 West Wall 06/27/23 6 33.0 1 AST-01 06/28/23 2 28.5 1 AST-02 06/28/23 2 5.83 1 AST-03 06/28/23 2 123 1 AST-04 06/28/23 2 40.9 1 AST-05 06/28/23 2 12.8 1 AST-06 06/28/23 2 12.6 1 AST-09 06/28/23 2 21.7 1 AST-11 Duplicate AST-09 06/28/23 2 22.1 1 AST-10 06/28/23 2 420 1 AST-11 East Trench 02 09/01/23 5 6.23 1 AST-11 East Dup AST-11 09/01/23 5 5.23 1 AST-12 North Trench 02 09/01/23 5 3.83 1 AST-13 East Wall Foundation West 09/01/23 5 1.44 1 AST-14 East Wall Foundation East 09/01/23 5 101 1 AST-15 West Wall Foundation East 09/01/23 5 4.41 1 AST-16 West Wall Foundation West 09/01/23 5 5.90 1 AST-17 Transformer Pad 09/01/23 5 4.11 1 HQ-26 @ 3-6' 06/16/21 3 - 6 4.70 1 Trench-01 @ 4-5' 06/16/21 4 - 5 39.7 1 HQ-31 @ 7'-9' BGS 06/17/21 7 - 9 35.0 1 Coal Area 2023 HQ-36 @ 4.5'-7' BGS 06/18/21 4.5 - 7 85.5 1 PD-07 11/08/22 8-9 5.36 1 PD-08 11/10/22 7.5-8.5 8.84 1 PD-09 11/08/22 9-10 3.17 1 CP-01 NW Corner 05/08/23 4-5 12.2 1 CP-02 North Center 05/08/23 4-5 148 1 CP-03-01 NW 08/14/23 2.8-4.0 140 1 CP-03-02 NE 08/14/23 2.8-4.0 12.4 1 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 A B C D E F G CP-03-03 SW 08/14/23 2.8-4.0 158 1 CP-04 SE Corner 05/08/23 2.5-3.5 47.2 1 CP-05 South Center 05/08/23 5-6 83.2 1 CP-06 SW Corner 05/08/23 5-6 46.9 1 SH-01W 08/17/23 5-6 14.0 1 SH-02E 08/17/23 5-6 11.7 1 CF-01 Coal Foundation North 09/01/23 5-6 35.6 1 CF-02 Grizzly/Conveyor South 09/01/23 5-6 17.4 1 CF-03 Conduit to Stacker 09/01/23 5-6 4.10 1 CF-04 Stacker House 09/01/23 5-6 13.9 1 CF-05 Conduit to Loadout 09/01/23 5-6 6.57 1 CF-06 Conduit South South 09/01/23 5-6 9.59 1 CF-09 Conduit to Tunnel 09/01/23 5-6 17.0 1 CF-07 Loadout 09/01/23 5-6 13.5 1 CF-08 Loadout 09/01/23 5-6 15.0 1 CF-10 SW Corner Foundation 09/01/23 5-6 16.1 1 CF-11 SW Corner Foundation 09/01/23 5-6 11.3 1 CF-12 SW Corner Foundation 09/01/23 5-6 55.1 1 CF-12 Dup 09/01/23 5-6 15.1 1 CF-13 SW Corner 09/01/23 5-6 48.0 1 CF-14 09/01/23 5-6 8.68 1 CF-15 09/01/23 5-6 29.9 1 AA-13-4 09/13/22 4-5 24.0 1 AA-12-0 09/13/22 0-0.167 57.4 1 AA-12-0 DUP 09/13/22 0-0.167 59.6 1 AA-12-4 09/13/22 4-5 45.8 1 ATTACHMENT D CONSTRUCTION WORKER - ARSENIC AND LEAD UCL OUTPUTS (EPCs) A B C D E F G H I J K L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 User Selected OptionsUser Selected Options Date/Time of ComputationDate/Time of ComputationDate/Time of Computation ProUCL 5.2 12/12/2024 8:34:08 AMProUCL 5.2 12/12/2024 8:34:08 AMProUCL 5.2 12/12/2024 8:34:08 AMProUCL 5.2 12/12/2024 8:34:08 AM From FileFrom File Lead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xls Full PrecisionFull Precision OFF Confidence CoefficientConfidence CoefficientConfidence Coefficient 95% Number of Bootstrap OperationsNumber of Bootstrap OperationsNumber of Bootstrap Operations 2000 Total Number of ObservationsTotal Number of ObservationsTotal Number of Observations 179 Number of Distinct ObservationsNumber of Distinct ObservationsNumber of Distinct Observations 175 Number of Missing ObservationsNumber of Missing ObservationsNumber of Missing Observations 1 Minimum 1.44 Mean 96.64 Maximum 784 Median 37.5 SD 153.1 Std. Error of MeanStd. Error of Mean 11.45 Coefficient of VariationCoefficient of Variation 1.585 Skewness 2.511 Shapiro Wilk Test StatisticShapiro Wilk Test StatisticShapiro Wilk Test Statistic 0.615 1% Shapiro Wilk P Value1% Shapiro Wilk P Value1% Shapiro Wilk P Value 0 Data Not Normal at 1% Significance LevelData Not Normal at 1% Significance LevelData Not Normal at 1% Significance LevelData Not Normal at 1% Significance Level Lilliefors Test StatisticLilliefors Test Statistic 0.294 1% Lilliefors Critical Value1% Lilliefors Critical Value1% Lilliefors Critical Value 0.0771 Data Not Normal at 1% Significance LevelData Not Normal at 1% Significance LevelData Not Normal at 1% Significance LevelData Not Normal at 1% Significance Level 95% Student's-t UCL95% Student's-t UCL 115.6 95% Adjusted-CLT UCL (Chen-1995)95% Adjusted-CLT UCL (Chen-1995)95% Adjusted-CLT UCL (Chen-1995)95% Adjusted-CLT UCL (Chen-1995)117.8 95% Modified-t UCL (Johnson-1978)95% Modified-t UCL (Johnson-1978)95% Modified-t UCL (Johnson-1978)95% Modified-t UCL (Johnson-1978)115.9 A-D Test StatisticA-D Test Statistic 6.171 5% A-D Critical Value5% A-D Critical Value 0.805 Data Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance Level K-S Test StatisticK-S Test Statistic 0.155 5% K-S Critical Value5% K-S Critical Value 0.0723 Data Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance Level k hat (MLE)k hat (MLE)0.655 k star (bias corrected MLE)k star (bias corrected MLE)k star (bias corrected MLE)0.648 Theta hat (MLE)Theta hat (MLE)147.5 Theta star (bias corrected MLE)Theta star (bias corrected MLE)Theta star (bias corrected MLE)149.1 nu hat (MLE)nu hat (MLE)234.6 nu star (bias corrected)nu star (bias corrected)nu star (bias corrected)232 MLE Mean (bias corrected)MLE Mean (bias corrected)MLE Mean (bias corrected)96.64 MLE Sd (bias corrected)MLE Sd (bias corrected)MLE Sd (bias corrected)120 Approximate Chi Square Value (0.05)Approximate Chi Square Value (0.05)Approximate Chi Square Value (0.05)Approximate Chi Square Value (0.05)197.8 Adjusted Level of SignificanceAdjusted Level of SignificanceAdjusted Level of Significance 0.0487 Adjusted Chi Square ValueAdjusted Chi Square ValueAdjusted Chi Square Value 197.5 95% Approximate Gamma UCL95% Approximate Gamma UCL95% Approximate Gamma UCL 113.4 95% Adjusted Gamma UCL95% Adjusted Gamma UCL95% Adjusted Gamma UCL 113.5 Shapiro Wilk Test StatisticShapiro Wilk Test StatisticShapiro Wilk Test Statistic 0.965 10% Shapiro Wilk P Value10% Shapiro Wilk P Value10% Shapiro Wilk P Value 0.00467 Data Not Lognormal at 10% Significance LevelData Not Lognormal at 10% Significance LevelData Not Lognormal at 10% Significance LevelData Not Lognormal at 10% Significance Level A B C D E F G H I J K L 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 Lilliefors Test StatisticLilliefors Test Statistic 0.0576 10% Lilliefors Critical Value10% Lilliefors Critical Value10% Lilliefors Critical Value 0.061 Data appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance Level Minimum of Logged DataMinimum of Logged DataMinimum of Logged Data 0.365 Mean of logged DataMean of logged Data 3.64 Maximum of Logged DataMaximum of Logged DataMaximum of Logged Data 6.664 SD of logged DataSD of logged Data 1.372 95% H-UCL95% H-UCL 126.5 90% Chebyshev (MVUE) UCL90% Chebyshev (MVUE) UCL90% Chebyshev (MVUE) UCL 137.1 95% Chebyshev (MVUE) UCL95% Chebyshev (MVUE) UCL95% Chebyshev (MVUE) UCL 155.4 97.5% Chebyshev (MVUE) UCL97.5% Chebyshev (MVUE) UCL97.5% Chebyshev (MVUE) UCL 180.8 99% Chebyshev (MVUE) UCL99% Chebyshev (MVUE) UCL99% Chebyshev (MVUE) UCL 230.8 95% CLT UCL95% CLT UCL 115.5 95% BCA Bootstrap UCL95% BCA Bootstrap UCL95% BCA Bootstrap UCL 119 95% Standard Bootstrap UCL95% Standard Bootstrap UCL95% Standard Bootstrap UCL 116.3 95% Bootstrap-t UCL95% Bootstrap-t UCL 119.4 95% Hall's Bootstrap UCL95% Hall's Bootstrap UCL95% Hall's Bootstrap UCL 118.7 95% Percentile Bootstrap UCL95% Percentile Bootstrap UCL95% Percentile Bootstrap UCL 117.5 90% Chebyshev(Mean, Sd) UCL90% Chebyshev(Mean, Sd) UCL90% Chebyshev(Mean, Sd) UCL 131 95% Chebyshev(Mean, Sd) UCL95% Chebyshev(Mean, Sd) UCL95% Chebyshev(Mean, Sd) UCL 146.5 97.5% Chebyshev(Mean, Sd) UCL97.5% Chebyshev(Mean, Sd) UCL97.5% Chebyshev(Mean, Sd) UCL 168.1 99% Chebyshev(Mean, Sd) UCL99% Chebyshev(Mean, Sd) UCL99% Chebyshev(Mean, Sd) UCL 210.5 95% H-UCL95% H-UCL 126.5 Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL. Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies. However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician. A B C D E F G H I J K L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 User Selected OptionsUser Selected Options Date/Time of ComputationDate/Time of ComputationDate/Time of Computation ProUCL 5.2 12/12/2024 8:34:08 AMProUCL 5.2 12/12/2024 8:34:08 AMProUCL 5.2 12/12/2024 8:34:08 AMProUCL 5.2 12/12/2024 8:34:08 AM From FileFrom File Lead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xlsLead, UCL data set, 0-10 feet - Area A, less River Bank & over 800.xls Full PrecisionFull Precision OFF Confidence CoefficientConfidence CoefficientConfidence Coefficient 95% Number of Bootstrap OperationsNumber of Bootstrap OperationsNumber of Bootstrap Operations 2000 Total Number of ObservationsTotal Number of ObservationsTotal Number of Observations 179 Number of Distinct ObservationsNumber of Distinct ObservationsNumber of Distinct Observations 175 Number of Missing ObservationsNumber of Missing ObservationsNumber of Missing Observations 1 Minimum 1.44 Mean 96.64 Maximum 784 Median 37.5 SD 153.1 Std. Error of MeanStd. Error of Mean 11.45 Coefficient of VariationCoefficient of Variation 1.585 Skewness 2.511 Shapiro Wilk Test StatisticShapiro Wilk Test StatisticShapiro Wilk Test Statistic 0.615 1% Shapiro Wilk P Value1% Shapiro Wilk P Value1% Shapiro Wilk P Value 0 Data Not Normal at 1% Significance LevelData Not Normal at 1% Significance LevelData Not Normal at 1% Significance LevelData Not Normal at 1% Significance Level Lilliefors Test StatisticLilliefors Test Statistic 0.294 1% Lilliefors Critical Value1% Lilliefors Critical Value1% Lilliefors Critical Value 0.0771 Data Not Normal at 1% Significance LevelData Not Normal at 1% Significance LevelData Not Normal at 1% Significance LevelData Not Normal at 1% Significance Level 95% Student's-t UCL95% Student's-t UCL 115.6 95% Adjusted-CLT UCL (Chen-1995)95% Adjusted-CLT UCL (Chen-1995)95% Adjusted-CLT UCL (Chen-1995)95% Adjusted-CLT UCL (Chen-1995)117.8 95% Modified-t UCL (Johnson-1978)95% Modified-t UCL (Johnson-1978)95% Modified-t UCL (Johnson-1978)95% Modified-t UCL (Johnson-1978)115.9 A-D Test StatisticA-D Test Statistic 6.171 5% A-D Critical Value5% A-D Critical Value 0.805 Data Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance Level K-S Test StatisticK-S Test Statistic 0.155 5% K-S Critical Value5% K-S Critical Value 0.0723 Data Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance LevelData Not Gamma Distributed at 5% Significance Level k hat (MLE)k hat (MLE)0.655 k star (bias corrected MLE)k star (bias corrected MLE)k star (bias corrected MLE)0.648 Theta hat (MLE)Theta hat (MLE)147.5 Theta star (bias corrected MLE)Theta star (bias corrected MLE)Theta star (bias corrected MLE)149.1 nu hat (MLE)nu hat (MLE)234.6 nu star (bias corrected)nu star (bias corrected)nu star (bias corrected)232 MLE Mean (bias corrected)MLE Mean (bias corrected)MLE Mean (bias corrected)96.64 MLE Sd (bias corrected)MLE Sd (bias corrected)MLE Sd (bias corrected)120 Approximate Chi Square Value (0.05)Approximate Chi Square Value (0.05)Approximate Chi Square Value (0.05)Approximate Chi Square Value (0.05)197.8 Adjusted Level of SignificanceAdjusted Level of SignificanceAdjusted Level of Significance 0.0487 Adjusted Chi Square ValueAdjusted Chi Square ValueAdjusted Chi Square Value 197.5 95% Approximate Gamma UCL95% Approximate Gamma UCL95% Approximate Gamma UCL 113.4 95% Adjusted Gamma UCL95% Adjusted Gamma UCL95% Adjusted Gamma UCL 113.5 Shapiro Wilk Test StatisticShapiro Wilk Test StatisticShapiro Wilk Test Statistic 0.965 10% Shapiro Wilk P Value10% Shapiro Wilk P Value10% Shapiro Wilk P Value 0.00467 Data Not Lognormal at 10% Significance LevelData Not Lognormal at 10% Significance LevelData Not Lognormal at 10% Significance LevelData Not Lognormal at 10% Significance Level A B C D E F G H I J K L 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 Lilliefors Test StatisticLilliefors Test Statistic 0.0576 10% Lilliefors Critical Value10% Lilliefors Critical Value10% Lilliefors Critical Value 0.061 Data appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance LevelData appear Lognormal at 10% Significance Level Minimum of Logged DataMinimum of Logged DataMinimum of Logged Data 0.365 Mean of logged DataMean of logged Data 3.64 Maximum of Logged DataMaximum of Logged DataMaximum of Logged Data 6.664 SD of logged DataSD of logged Data 1.372 95% H-UCL95% H-UCL 126.5 90% Chebyshev (MVUE) UCL90% Chebyshev (MVUE) UCL90% Chebyshev (MVUE) UCL 137.1 95% Chebyshev (MVUE) UCL95% Chebyshev (MVUE) UCL95% Chebyshev (MVUE) UCL 155.4 97.5% Chebyshev (MVUE) UCL97.5% Chebyshev (MVUE) UCL97.5% Chebyshev (MVUE) UCL 180.8 99% Chebyshev (MVUE) UCL99% Chebyshev (MVUE) UCL99% Chebyshev (MVUE) UCL 230.8 95% CLT UCL95% CLT UCL 115.5 95% BCA Bootstrap UCL95% BCA Bootstrap UCL95% BCA Bootstrap UCL 119 95% Standard Bootstrap UCL95% Standard Bootstrap UCL95% Standard Bootstrap UCL 116.3 95% Bootstrap-t UCL95% Bootstrap-t UCL 119.4 95% Hall's Bootstrap UCL95% Hall's Bootstrap UCL95% Hall's Bootstrap UCL 118.7 95% Percentile Bootstrap UCL95% Percentile Bootstrap UCL95% Percentile Bootstrap UCL 117.5 90% Chebyshev(Mean, Sd) UCL90% Chebyshev(Mean, Sd) UCL90% Chebyshev(Mean, Sd) UCL 131 95% Chebyshev(Mean, Sd) UCL95% Chebyshev(Mean, Sd) UCL95% Chebyshev(Mean, Sd) UCL 146.5 97.5% Chebyshev(Mean, Sd) UCL97.5% Chebyshev(Mean, Sd) UCL97.5% Chebyshev(Mean, Sd) UCL 168.1 99% Chebyshev(Mean, Sd) UCL99% Chebyshev(Mean, Sd) UCL99% Chebyshev(Mean, Sd) UCL 210.5 95% H-UCL95% H-UCL 126.5 Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL. Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies.Recommendations are based upon data size, data distribution, and skewness using results from simulation studies. However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.