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Home My WebLink AboutDSHW-2018-005572 - 0901a0688084efd5Resource and Environmental Management Consultants 8496 South Harrison Street Suite 102 Midvale, Utah 84047 (801)255 -2626 REMC Est. 1997 Midvale, Utah June 26, 2017 Grant Kelser G3B, LLC 3739 Brighton Point Drive Salt Lake City DS1-1-W -20 i 8-005571 Div of Waste Management and Radiation Control pitty 1 4 2018 RE: Results of Phase II Site Environmental Site Assessment at 370 West 900 South, Salt Lake City, Utah. Dear Mr. Kelser, This report presents the results of a Phase 11 Environmental Site Assessment (Phase 11 ESA) conducted at 370 West 900 South, Salt Lake City, Utah (Property). The Phase II ESA was recommended based on the results of the Phase I Environmental Site Assessment (Phase I ESA) performed by REMC. The Property is located in a mixed commercial, industrial, and residential area of Salt Lake City. The Phase II ESA was conducted to assess soil and groundwater conditions at the Property. REMC recommended the Phase 11 ESA based on the historic industrial use of the Property by Utah Barrel, Inc., a drum and scrap metal recycling facility, and past industrial use of adjacent properties. Direct-push technology was used to collect samples in six boreholes located throughout the Property along two approximately north-south transects. Borehole locations were biased towards the south and west sides of the Property, since groundwater flow in the vicinity of the Property is generally towards the southwest. Three of the boreholes were advanced to a depth of approximately fifteen feet below ground surface (bgs) in order to fully intercept the shallow groundwater table. Environmental samples were also collected from the upper fifteen feet of three geotechnical boreholes that were advanced to depths of twenty-five feet to one hundred feet. Borehole locations were selected in the field to avoid underground utilities, overhead powerlines and other potential underground hazards. A map of the Property with borehole locations is presented in Figure 1. Groundwater and soil samples were collected from each borehole for analysis of metals (lead and arsenic), volatile organic compounds (VOCs) and polychlorinated biphenyls (PCBs). All work performed as part of this Phase II ESA was conducted in accordance with standard environmental methodologies and protocols. Sample analysis was performed by American West Analytical Laboratories which is certified by the State of Utah and the National Environmental Laboratory Accreditation Program (NELAP). VOC and PCB sample results are presented in Table 1 and Table 2. Metals sample results are presented in Table 4. VOC and PCB screening values are presented in Table 3 and metal screening values are presented in Table 5. Analytical laboratory reports are attached to this report. Resource and Environmental Management Consultants 8496 South Harrison Street Suite 102 Midvale, Utah 84047 (801) 255 -2626 Residential screening levels, provided by EPA's regional screening levels (RSL) tables, were used to identify possible areas of concern. Residential screening values were used during this assessment as they are more conservative than industrial values. Use of industrial screening values typically requires negotiation with the regulatory agencies and a deed restriction on the property limiting land use. Screening values, whether residential or industrial, are generated by regulatory agencies as a method to determine if contaminant concentrations exceed conservative levels above which human health or ecological effects will be observed. Screening values are not action levels typically action levels are higher than screening levels and are generated in a streamlined risk assessment under oversight by a regulatory agency. Soil Soil samples were produced from the boreholes in two-foot increments, i.e. 0-2 feet, 2-4 feet, etc. The sample from each depth interval was composited and screened in the field using a portable X-ray fluorescence meter (XRF) and a photoionization detector (PID). The XRF and PID were used to screen samples from each depth interval for metals and VOCs, respectively. At each borehole, two samples were collected for laboratory analysis of metals and two samples were collected for laboratory analysis of VOCs and PCBs. One sample was collected from the depth interval where the highest concentrations were detected by the XRF or PID. A second sample was collected from the depth interval where contaminants were not detected by the XRF or PID to define the lower limits of contamination. Soil sample results indicate that significant levels of lead and arsenic contamination are present in the upper two feet of soil at the Property. Lead and arsenic concentrations in the upper two feet of soil exceeded residential screening values in all samples, and maximum recorded concentrations were 7,210 mg/kg and 1,210 mg/kg, respectively (see Table 3). In samples collected below two feet bgs, no samples exceeded the residential screening value for lead and all but one sample exceeded the residential screening value for arsenic (see Table 5). However, the arsenic residential screening value is considered very conservative and unlikely to be applied as a cleanup level by a regulatory agency (i.e., Utah Department of Environmental Quality). Thus, all soil metals contamination of concern at the Property is considered to be limited to the upper two feet of material. For VOCs, detectable amounts of acetone, carbon disulfide, cis-1,2-dichloroethene, toluene, and xylenes were found in a total of eight out of twelve samples (see Table 1). However, all soil VOC results were below screening levels. For PCBs, detectable amounts of the compounds Aroclor 1254 and Aroclor 1260 were found in four out of twelve samples (see Table 2). All PCB results exceeded residential screening values (see Table 4). However, elevated PCB concentrations were generally limited to the upper two feet of soils similar to the metals results. Resource and Environmental Management Consultants 8496 South Harrison Street Suite 102 Midvale, Utah 84047 (801)255 -2626 REMC Eat. 1997 Midvale, Utah Groundwater One groundwater sample was collected at each borehole location. Groundwater sample collection was enabled by inserting a new piece of slotted PVC well screen into the completed borehole. Sample collection was conducted following appropriate development and purging using a peristaltic pump and new plastic tubing. Groundwater samples were analyzed by the laboratory for PCBs and VOCs. Depth to groundwater was approximately seven to ten feet bgs. The results of the soil sampling indicate that the majority of lead and arsenic contamination was only found in the upper two feet of the soil (Table 3). Thus, shallow groundwater at the Property is unlikely to have been impacted by metals and analysis of metals in groundwater was not conducted. Groundwater samples collected from four of the six boreholes did not contain detectable concentrations of VOCs. The sample collected from borehole G3B-C15ft contained low concentrations of acetone that did not exceed screening values (Table 1). The sample collected from G3B-S25ft contained low concentrations naphthalene that exceeded screening values (Table 1). However, the isolated and limited nature of VOC contamination makes the possibility of vapor intrusion into current or future buildings on the Property unlikely. The shallow aquifer located below the property is a poor quality water source and is not used for drinking water. None of the groundwater samples contained detectable concentrations of PCBs. Summary Widespread lead and arsenic contamination that exceeds residential and industrial screening values is present in the upper two feet of soil throughout the Property. Removal of lead and arsenic contaminated soils should be conducted prior to redevelopment of the Property. Contaminated soil removal should be conducted under the oversight of a regulatory agency, such as the Utah Department of Environmental Quality's Voluntary Cleanup Program (VCUP). Limited PCB contamination exists at the Property. PCB contamination is limited to the upper two feet of soil at the Property and can be addressed concurrently with removal of soils contaminated with lead and arsenic. De minimis levels of VOCs are present in soils and groundwater at the Property. If you have any questions or comment please feel free to contact me at 801-255-2626. Sincerely, Jim Fricke Resource and Enviromnental Management Consultants 8496 South Harrison Street Suite 102 Midvale, Utah 84047 (801) 255 -2626 REMC Attachments: Figure 1— Site Map Table 1 — VOC Results Table 2 — PCB Results Table 3 — VOC and PCB Screening Values Table 4 — Metals Results Table 5 — Metals Screening Values Analytical Laboratory Reports REMC Eat. 1997 Midvale, Utah scA 25 50 75 100 NOTE Locations approximate, not surveyed. Property boundary G3B-GW-100ft Epic Brewing Ultra Kitchen Design 370 WEST 900 SOUTH PHASE II ESA FIGURE 1 SITE MAP RESOURCE MANAGEMENT CONSULTANTS 8496 S Harrison Street ... Suite 102 Midvale, UT 84047 801-255-2626 G33 site roapshig June 2017 Table 1 - VOC Results Borehole Sample ID Sample Date Matrix Acetone Carbon disulfide cis-1,2- Dichloroethene Toluene Xylenes Tetrachloro ethene Napthalene G3B-N15ft G3B-N15ft-4-6ft 6/7 Soil ND ND ND ND ND ND ND G3B-N15ft G3B-N15ft-12-14ft 6/7 Soil ND ND ND ND ND ND ND G3B-N15ft G3B-GW-N15ft 6/8 Water ND ND ND ND ND ND ND G3B-100ft G3B-100ft-10-12ft 6/5 Soil ND ND ND ND ND ND ND G3B-100ft G3B-100ft-14-16ft 6/5 Soil 22.6 39.8 ND ND ND ND ND G3B-100ft G3B-GW-100ft 6/9 Water ND ND ND ND ND ND ND G3B-C15ft G3B-C15ft-0-2ft 6/7 Soil ND ND ND ND ND 14.9 ND G3B-C15ft G3B-C15ft-14-16ft 6/7 Soil ND 4.92 ND ND ND ND ND G3B-C15ft G3B-GW-C15ft 6/9 Water 11.1 ND ND ND ND ND ND G3B-N25ft G3B-N25ft-0-2ft 6/6 Soil 70.6 ND 3.92 ND ND ND ND G3B-N25ft G3B-N25ft-2-4ft 6/6 Soil 102 4.41 6.3 2.68 ND ND ND G3B-N25ft G3B-GW-N25ft 6/9 Water ND ND ND ND ND ND ND G3B-SUMP G3B-GW-SUMP 6/8 Water ND ND ND ND ND ND ND G3B-525ft G3B-S25ft-2-4ft 6/6 Soil ND ND ND 28.6 98.9 ND ND G3B-525ft G3B-525ft-12-14ft 6/6 Soil ND ND ND ND ND ND ND G3B-S25ft G3B-GW-S25ft 6/8 Water ND ND ND ND ND ND 12 G3B-515ft G3B-S15ft-6-8ft 6/7 Soil ND ND ND ND ND ND ND G3B-515ft G3B-S15ft-14-16ft 6/7 Soil ND 5 84 ND ND ND ND ND G3B-515ft G3B-GW-S15ft 6/9 Water ND ND ND ND ND ND ND Notes: All units parts per million (PPM). All water results are dissolved concentrations. All bold values exceed residential screening values Table 2 - PCB Results Borehole Sample ID Sample Date Matrix Aroclor 1254 Aroclor 1260 G3B-N15ft G3B-N15ft-4-6ft 6/7 Soil 66.9 ND G3B-N15ft G3B-N15ft-12-14ft 6/7 Soil ND ND G3B-N15ft G3B-GW-N15ft 6/8 Water ND ND G3B-100ft G3B-100ft-10-12ft 6/5 Soil ND ND G3B-100ft G3B-100ft-14-16ft 6/5 Soil ND ND G3B-100ft G3B-GW-100ft 6/9 Water ND ND G3B-C15ft G3B-C15ft-0-2ft 6/7 Soil ND 116 G3B-C15ft G3B-C15ft-14-16ft 6/7 Soil ND ND G3B-C15ft G3B-GW-C15ft 6/9 Water ND ND G3B-N25ft G3B-N25ft-0-2ft 6/6 Soil 459 289 G3B-N25ft G3B-N25ft-2-4ft 6/6 Soil 48.2 ND G3B-N25ft G3B-GW-N25ft 6/9 Water ND ND G3B-SUMP G3B-GW-SUMP 6/8 Water ND ND G3B-S25ft G3B-S25ft-2-4ft 6/6 Soil ND ND G3B-525ft G3B-S25ft-12-14ft 6/6 Soil ND ND G3B-525ft G3B-GW-S25ft 6/8 Water ND ND G3B-S15ft G3B-S15ft-6-8ft 6/7 Soil ND ND G3B-S15ft G3B-S15ft-14-16ft 6/7 Soil ND ND G3B-S15ft G3B-GW-S15ft 6/9 Water ND ND Notes: All units parts per million (PPM). All water results are dissolved concentrations. All bold values exceed residential screening values Table 3 - VOC and PCB Screening Values Screening parameter Acetone Aroclor 1254 Aroclor 1260 Carbon disulfide cis-1,2- Dichloroethene Naphthalene Tetrachloro ethene Toluene Nylenes Residential Soil 61000 0.24 0.24 770 160 3.8 24 4900 580 Industrial Soil 670000 0.97 0.99 3500 2300 17 100 47000 2500 Groundwater Protection - Risk Based 2.9 0.002 0.0055 0.24 0.01 0.00054 0.0051 0.76 0.19 broundwater Protection - MCL NV NV NV NV 0.021 NV 0.0023 0.69 9.9 Notes: All units are in ppm Screening values from https://semspub.epa.gov/work/03/2245059.pdf NV = No value Table 4 - Metals Results Borehole Sample ID1 Sample Date Matrix Arsenic Lead G3B-N15ft G3B-N15ft-0-2ft 6/7 Soil 30.5 646 G3B-N15ft G3B-N15ft-2-4ft 6/7 Soil 10.9 50.9 G3B-100ft G3B-100ft-0-2ft 6/5 Soil 192 7210 G3B-100ft G3B-100ft-2-4ft 6/5 Soil 8.36 101 G3B-C15ft G3B-C15ft-O-2ft 6/7 Soil 29 1050 G3B-C15ft G3B-C15ft-2-4ft 6/7 Soil 10.5 217 G3B-C15ft G3B-C15ft-12-14ft 6/7 Soil ND ND G3B-N25ft G3B-N25ft-0-2ft 6/6 Soil 18.4 590 G3B-N25ft G3B-N25ft-2-4ft 6/6 Soil 14.2 206 G3B-S25ft G3B-S25ft-0-2ft 6/6 Soil 1210 5580 G3B-S25ft G3B-S25ft-4-6 6/6 Soil 27.9 23.1 G3B-S15ft G3B-S15ft-0-2ft 6/7 Soil 183 1380 G3B-S15ft G3B-S15ft-6-8ft 6/7 Soil 6.54 35.8 Notes: All units parts per million (PPM). All water results are dissolved concentrations, soil concentrations determined by XRF. All bold values exceed residential screening values Table 5 - Metals Screening Values Screening parameter Arsenic Lead and compounds Residential Soil 0.68 400 Industrial Soil 3 800 Groundwater Protection - Risk Based 0.0015 NV Groundwater Protection - MCL 0.029 14 Notes: All units are ppm Screening values from https://semspub.epa.gov/work/03/2245059.pdf NV = No value