DSHW-2023-206629 - 0901a06881240aea

Deq submit <[e-mail]>
Recycled Earth South Trench Results
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Rasmuson, Anna <[e-mail]>Wed, Jul 19, 2023 at 4:25 PM
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 is the detection summary table for the south trench excavation confirmation samples collected by Tetra Tech following
excavation of the upper 6-12 inches of soil on June 29, 2023. All detections were below the EPA RSLs, including the soil sample
composited from the excavated materials, which will be disposed at an off-site, solid-waste landfill by Recycled Earth. Tetra Tech will
incorporate these results into the Site Characterization Report with no further action required for the South Trench area.
Thanks,
Anna
Anna Rasmuson, Ph.D., P.G. | Geological Engineer
Pronouns: she, her, hers
Mobile [phone] | [e-mail]
****I will be out of office July 24 through August 4 ****
Tetra Tech | Leading with Science® | ECA
4750 W. 2100 S., Suite. 400. | Salt Lake City, UT 84120 | tetratech.com
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Table 2. South Trench Excavation Sample Results.pdf
120K
DSHW-2023-206629
Table 2: South Trench Excavation Confirmation Sample Results
ST‐CS‐1ST‐CS‐2ST‐CS‐3ST‐CS‐4ST‐CS‐5ST‐CS‐6ST‐CS‐7ST‐CS‐COMP
Gasoline Range Organics 2,200 0.88 <3.8 <4.05 1.5 1.9 <4.02 <4.22 1.6
Diesel Range Organics 440 1.3 1.3 5.3 52 56 1.4 1.8 59
TPH NS 2.2 1.3 5.3 53 58 1.4 1.8 60
1,2,3‐Trichlorobenzene NS <0.0193 <0.019 <0.0203 <0.0218 <0.0171 <0.0201 <0.0211 0.020
1,2,3‐Trimethylbenzene 340 <0.00772 <0.0076 <0.00811 <0.0087 <0.00685 <0.00804 <0.00844 0.026
1,2,4‐Trimethylbenzene 300 <0.00772 <0.0076 <0.00811 <0.0087 <0.00685 <0.00804 <0.00844 0.095
1,3,5‐Trimethylbenzene 270 <0.00772 <0.0076 <0.00811 <0.0087 <0.00685 <0.00804 <0.00844 0.031
4‐Methyl‐2‐pentanone (MIBK) 140,000 0.016 0.022 <0.0405 0.0045 <0.0343 <0.0402 <0.0422 0.011
Ethylbenzene 25 <0.00386 <0.0038 <0.00405 0.0020 <0.00343 <0.00402 <0.00422 <0.00398
Methylene Chloride NS <0.0386 <0.038 <0.0405 0.013 <0.0343 <0.0402 <0.0422 <0.0398
Naphthalene 8.6 <0.0193 <0.019 <0.0203 <0.0218 <0.0171 <0.0201 <0.0211 0.034
n‐Propylbenzene 24,000 <0.00772 <0.0076 <0.00811 <0.0087 <0.00685 <0.00804 <0.00844 0.012
Styrene 35,000 <0.0193 0.00067 <0.0203 <0.0218 <0.0171 <0.0201 <0.0211 <0.0199
Tetrachloroethene 100 <0.00386 <0.0038 <0.00405 <0.00435 <0.00343 <0.00402 <0.00422 0.0066
Toluene 4,900 <0.00772 0.012 0.11 0.017 0.0026 <0.00804 0.0080 0.027
Xylenes, Total 2,500 <0.01 0.0040 <0.0105 0.010 0.0016 <0.0105 0.0029 0.057
1‐Methylnaphthalene 73 <0.0249 <0.025 <0.0253 <0.0247 <0.0235 <0.0259 <0.0262 0.0093
2‐Methylnaphthalene 3,000 <0.0249 <0.025 <0.0253 <0.0247 0.0082 <0.0259 <0.0262 0.015
Acenaphthene 45,000 0.0044 <0.0416 <0.0422 <0.0822 <0.0784 <0.0431 <0.0437 0.003
Anthracene 230,000 0.026 0.0090 <0.0422 <0.0822 <0.0784 <0.0431 <0.0437 <0.21
Benzo(a)anthracene 21 0.26 0.086 0.0062 0.0042 <0.0784 0.057 0.0027 0.0064
Benzo(a)pyrene 2.1 0.22 0.076 0.0092 0.0090 <0.0784 0.070 0.0035 0.0064
Benzo(b)fluoranthene 21 0.29 0.10 0.014 0.017 0.020 0.097 0.0039 0.0059
Benzo(g,h,i)perylene NS <0.0414 0.046 0.0077 0.035 <0.0784 0.056 0.0048 0.0046
Benzo(k)fluoranthene 11 0.10 0.037 0.0050 <0.0822 <0.0784 0.035 <0.0437 <0.21
Chrysene 2,100 0.21 0.074 0.0097 0.012 <0.0784 0.075 <0.0437 0.0059
Dibenz(a,h)anthracene 2.1 0.029 0.010 <0.0422 0.012 <0.0784 0.010 <0.0437 <0.21
Fluoranthene 3,000 0.41 0.14 0.019 0.0058 <0.0784 0.14 0.0056 0.014
Fluorene 30,000 0.0040 <0.0416 <0.0422 <0.0822 <0.0784 <0.0431 <0.0437 <0.21
Indeno(1,2,3‐cd)pyrene 21 0.14 0.054 0.0086 0.0080 <0.0784 0.063 0.0030 0.0034
Naphthalene 8.6 <0.0193 <0.019 <0.0203 <0.0218 <0.0171 <0.0201 <0.0211 0.034
Phenanthrene NS 0.10 0.033 0.0049 0.0043 <0.0784 0.027 <0.0437 0.011
Pyrene 23,000 0.34 0.11 0.015 0.0092 <0.0784 0.12 0.0061 0.014
Notes:
Bold values indicate exceedance of State and/or federal screening levels
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
NS = Not Specified
mg/kg = milligram per kilogram
Sample Results (mg/kg)
EPA Industrial 
Screening Level 
(mg/kg)
Analyte Group Analyte
Petroleum 
Hydrocarbons 
Volatile Organic 
Compounds 
(VOCs)
Semi‐Volatile 
Organic 
Compounds 
(VOCs)