DSHW-2023-004650 - 0901a068811f3d3e

Deq submit <[e-mail]>
Recycled Earth Recent French Drain and Soil Sample Results
1 message
Rasmuson, Anna <[e-mail]>Wed, May 10, 2023 at 10:49 AM
To: "Wadman, Heather" <[e-mail]>, "[e-mail]" <[e-mail]>, "[e-mail]"
<[e-mail]>
Cc: "Wilson, DavidWilson" <[e-mail]>, "Cahoon, Tyler R." <[e-mail]>, "Cahoon, Brad R."
<[e-mail]>, David Rawson <[e-mail]>
Hello,
Attached are the detection summary tables for the recent french drain and soil samples collected from Recycled Earth on April 20,
2023 as well as a figure showing the sample locations.
All soil results were below RSLs except for the following:
Arsenic concentrations were elevated for all samples and but below the established background concentration of 15 mg/kg
except for FD-1 at the south end of the french drain, which showed a concentration of 151 mg/kg.
Hexavalent chromium was elevated for sample FD-5 at the north end of the french drain and the field duplicate for this location.
All water results were below the UDEQ Groundwater Quality Standards and the UDEQ Groundwater Initial Screening Level except for
arsenic. We have not yet established a background concentration for arsenic in groundwater at the site but hope to establish
background levels from the subsurface investigation work.
Please let us know if you have any questions.
Regards,
Anna
Anna Rasmuson, Ph.D., P.G. | Geological Engineer
Pronouns: she, her, hers
Mobile [phone] | [e-mail]
Tetra Tech | Leading with Science® | ECA
4750 W. 2100 S., Suite. 400. | Salt Lake City, UT 84120 | tetratech.com
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DSHW-2023-004650

3 attachments
April 20 2023 Water Detections Summary.pdf
121K
April 20 2023 Soil Detections Summary.pdf
123K
April 20 Sample Locations.pdf
1011K
Figure 1: April 20, 2023 Sample Locations
Recycled Earth
Date 05/02/2022
Legend
FD-1
FD-2
FD-3
FD-4
FD-5
SS-3
SS-2
SS-10
SS-1
Maxar, Microsoft
French Drain Sample
Soil Sample
Table 2: French drain Soil and  Soil Sample Detections
FD‐1FD‐2FD‐3FD‐4FD‐5 DUP‐1SS‐1SS‐2SS‐3SS‐4
Arsenic 3 151 14 8.1 6.5 6.2 6.0 6.9 12 10 7.4
Beryllium 2,300 <0.264 <0.24 0.32 0.28 0.30 <0.243 <0.24 1.02 0.37 0.39
Chromium 8.0 5.6 16 28 59 40 7.9 21 18 20
Copper 47000 5.62 <2.4 26 35 75 52 6.4 12 33 29
Hexavalent Chromium 0.3 <1.32 <1.2 <1.18 <1.22 1.6 1.4 <1.2 <1.62 <1.19 <1.3
Lead 800 4.4 0.88 13 7.6 14 11 4.8 11 23 21
Nickel 7.7 3.3 12 14 30 21 5.6 12 12 12
Zinc 18 10 46 42 55 43 18 39 56 58
Gasoline Range Organics 2,200 <4.31 5.8 8.0 <3.73 <4.01 <3.65 <3.66 <5.77 5.40 <4.11
Diesel Range Organics 440 15 <4.8 59 39 12 <243 <4.8 <6.48 255 <26
Oil Range Organics 30,000 64 <4.8 121 117 54 647 8.5 19 198 47
TPH 79 5.8 188 156 66 647 8.5 19 458 47
Polychlorinated biphenyls (PCBs) PCB 1254 0.94 <0.0224 <0.0204 <0.0201 <0.0207 0.09 <0.0207 <0.0204 <0.0275 <0.0403 <0.0221
1,2,4‐Trimethylbenzene 300 <0.00862 <0.00718 0.25 <0.00747 <0.00801 <0.00729 <0.00733 <0.0115 0.15 <0.00821
1,3,5‐Trimethylbenzene 270 <0.00862 <0.00718 0.068 <0.00747 <0.00801 <0.00729 <0.00733 <0.0115 0.053 <0.00821
Ethylbenzene 25 <0.00431 <0.00359 0.016 <0.00373 <0.00401 <0.00365 <0.00366 <0.00577 <0.00347 <0.00411
Isopropylbenzene <0.00431 <0.00359 0.010 <0.00373 <0.00401 <0.00365 <0.00366 <0.00577 0.0060 <0.00411
Naphthalene 8.6 <0.0216 <0.0179 0.034 <0.0187 <0.02 <0.0182 <0.0183 <0.0288 0.50 0.026
n‐Butylbenzene 58,000 <0.0216 <0.0179 0.040 <0.0187 <0.02 <0.0182 <0.0183 <0.0288 <0.0174 <0.0205
n‐Propylbenzene 24,000 <0.00862 <0.00718 0.034 <0.00747 <0.00801 <0.00729 <0.00733 <0.0115 0.033 <0.00821
p‐Isopropyltoluene <0.00862 <0.00718 0.088 <0.00747 <0.00801 <0.00729 <0.00733 <0.0115 0.45 <0.00821
sec‐Butylbenzene 120,000 <0.0216 <0.0179 0.024 <0.0187 <0.02 <0.0182 <0.0183 <0.0288 <0.0174 <0.0205
Toluene 4,900 <0.00862 <0.00718 0.22 <0.00747 <0.00801 <0.00729 <0.00733 <0.0115 0.13 0.013
Xylenes, Total 2,500 <0.0112 <0.00933 0.11 <0.00971 <0.0104 <0.00948 <0.00952 <0.015 0.018 <0.0107
1‐Methylnaphthalene 73 <0.0264 <0.024 <0.0237 <0.0244 <0.0255 <0.0243 <0.024 <0.0324 0.36 <0.026
2‐Methylnaphthalene 3,000 <0.0264 <0.024 0.027 <0.0244 <0.0255 <0.0243 <0.024 <0.0324 0.38 <0.026
Acenaphthene 45,000 0.0095 <0.04 0.0078 <0.0406 <0.0425 <0.203 <0.04 <0.054 2.0 <0.0433
Anthracene 230,000 0.011 <0.04 <0.0394 <0.0406 <0.0425 <0.203 <0.04 <0.054 2.1 <0.0433
Benzo(a)anthracene 21 0.023 <0.04 0.019 0.044 0.010 0.013 <0.04 <0.054 <0.395 0.0083
Benzo(a)pyrene 2.1 0.020 <0.04 0.016 0.033 0.013 0.010 <0.04 <0.054 1.8 <0.0433
Benzo(b)fluoranthene 21 0.021 <0.04 0.017 0.051 0.012 0.012 <0.04 <0.054 1.8 0.010
Benzo(g,h,i)perylene 0.015 <0.04 0.018 0.032 0.028 0.015 <0.04 <0.054 0.76 0.0082
Benzo(k)fluoranthene 11 0.0093 <0.04 <0.0394 0.017 <0.0425 <0.203 <0.04 <0.054 0.69 <0.0433
Chrysene 2,100 0.028 <0.04 0.022 0.045 0.012 0.020 <0.04 <0.054 3.0 0.0093
Dibenz(a,h)anthracene 2.1 <0.044 <0.04 <0.0394 <0.0406 <0.0425 <0.203 <0.04 <0.054 0.25 <0.00781
Fluoranthene 3,000 0.072 <0.04 0.040 0.090 0.015 0.020 <0.0072 0.013 6.6 0.017
Fluorene 30,000 <0.044 <0.04 0.015 <0.0406 <0.0425 <0.203 <0.04 <0.054 1.1 <0.00781
Indeno(1,2,3‐cd)pyrene 21 0.013 <0.04 0.011 0.027 0.012 <0.203 <0.04 <0.054 1.0 <0.0433
Naphthalene 8.6 <0.0216 <0.0179 0.034 <0.0187 <0.02 <0.0182 <0.0183 <0.0288 0.50 0.026
Phenanthrene 0.064 <0.04 0.058 0.027 0.018 0.021 <0.04 0.010 8.2 0.013
Pyrene 23,000 0.069 <0.04 0.051 0.14 0.050 0.032 <0.0072 0.014 6.4 0.018
Notes:
Results with a < symbol  were not detected above the laboratory detection limit. 
EPA = Environmental Protection Agency
TPH = Total Petroleum Hydrocarbons
UDEQ = Utah Departmetn of Environmental Quality
mg/L = milligram per liter
mg/kg = milligram per kilogram
Bold values indicate exceedance of State and/or federal screening levels
Petroleum Hydrocarbons 
Volatile Organic Compounds (VOCs)
Semi‐Volatile Organic Compounds 
(VOCs)
EPA Industrial 
Screening Level 
(mg/kg)
Metals
Analyte Group Analyte
Sample Results (mg/kg)
Table 2: Tetra Tech Water Sample Detections
Gasoline Range Organics
Diesel Range Organics 1
Oil Range Organics
TPH 10
Oil & Grease
Toluene 1 1
Unfiltered Filtered Unfiltered Filtered Unfiltered Filtered Unfiltered Filtered Unfiltered Filtered Unfiltered Filtered
Arsenic 0.006 0.015 0.024 0.047 0.070 0.026 0.021 0.041 0.035 0.023 0.025 0.024 0.022
Chromium <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.018 <0.01 0.020 <0.01 <0.01 <0.01
Copper 0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.019 <0.01 0.038 <0.01 0.014 <0.01
Hexavalent Chromium 1.3 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 0.0010 0.00059 0.00067 0.00072 0.0018 0.00093
Lead <0.006 <0.006 <0.006 <0.006 <0.006 <0.006 0.0065 <0.006 <0.006 <0.006 <0.006 <0.006
Mercury 0.015 0.00031 <0.0002 0.000 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.00034 <0.0002 0.00027 <0.0002
Nickel 0.002 0.013 <0.01 0.012 0.017 <0.01 <0.01 0.019 <0.01 0.020 <0.01 0.012 <0.01
Selenium 0.05 0.019 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.013 <0.01 <0.01 <0.01 <0.01
Notes:
Results with a < symbol  were not detected above the laboratory detection limit. 
EPA = Environmental Protection Agency
TPH = Total Petroleum Hydrocarbons
UDEQ = Utah Departmetn of Environmental Quality
mg/L = milligram per liter
mg/kg = milligram per kilogram
Bold values indicate exceedance of State and/or federal screening levels
Water Sample Results (mg/L)
<6.58
<0.001
0.45
0.71
1.2
<6.1
<0.001
<0.1 <0.1
0.41
0.29
0.70.42
<6.41
0.003
<0.5
0.70
0.32
1.0
11
<0.001
DUP‐1
Metals
<0.1
<0.1
<0.3
<6.76
<0.001
<0.1
0.46
0.32
0.78
<5.95
0.002
<0.1
0.27
0.16
FD‐1FD‐2FD‐3FD‐4FD‐5 DUP‐1
<0.1
FD‐1FD‐2FD‐3FD‐4FD‐5Analyte Group Analyte
UDEQ Groundwater 
Quality Standards 
(mg/L)
UDEQ Groundwater  
Initial Screening 
Levels (mg/L)
UDEQ Groundwater  
Initial Screening 
Levels (mg/L)
Analyte Group Analyte
Water Sample Results (mg/L)
UDEQ Groundwater 
Quality Standards 
(mg/L)
Volatile Organic Compounds (VOCs)
Petroleum Hydrocarbons