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Home My WebLink AboutDERR-2024-011707Table of Contents 1.Internal Memorandum 2.RBCA Tier 1 Worksheet 3.Site Maps 4.Soil Analytical Results 5.Water Rights Map 6.Groundwater Protection Zones Map 7.Topographic Map Closure Packet for No Further Action Facility ID 4001842 Release ID OKZ located at 12592 South 1300 West, Riverton, Utah MEMORANDUM TO: LPST File THROUGH: Morgan Atkinson, PST Branch Manager Division of Environmental Response and Remediation Mike Pecorelli, EAP Section Manager Division of Environmental Response and Remediation Scott Everett, Toxicologist Division of Environmental Response and Remediation FROM: Alex Thompson, EAP Project Manager Division of Environmental Response and Remediation DATE: October 8, 2024 MP AT AT SUBJECT: LUST NFA - Closure Review Memo Speedway #9411, located at 12592 South 1300 West, Riverton, Utah, 84065 Facility Identification No. 4001842, Release Site OKZ On October 8, 2024 the Division of Environmental Response and Remediation received a closure notice for three underground storage tanks located at the #9411 Speedway. During excavation activities soil under two of the dispensers indicated potential petroleum contamination. A soil excavation was conducted and 53.68 tons of contaminated soils were removed. No groundwater was encountered. Samples were taken after the excavation to serve as confirmation samples. These and all samples indicated petroleum contamination was under initial screening levels. While minimal levels of contamination remain at the site, it is neither economically appropriate nor technologically feasible to remediate said contamination any further. The NFA package with supporting documents can be found here: https://drive.google.com/drive/folders/136MgBlGkB9_Ri1vt9r0rqcXGBJ9U5aJC Please initial this memo when your closure package review is complete. If you have questions, comments or concerns with the closure, please discuss with the project manager or request a closure committee discussion. Once this memo is complete, the NFA letter will be initiated through Adobe Sign for final signatures. Facility Information Facility Name:Speedway No. 9411 Release ID:OKZ Facility Address:12592 S 1300 W RIVERTON, UT 84065 Facility ID:4001842 Notification Date:07/10/2024 Owner Name:TRMC Retail LLC Reporting Party:Anna Skinner Owner Address:500 Speedway Drive ENON, OH 45323 Project Manager:Alex Thompson Site Assessment Information a. Contaminant Source Information Cause of Release (if known) Product Released Amount Released (gal) Size (gal) # of USTs Tank Piping Disp Over/Spill Other Comments Gasoline Unkn 15,000 & 7,000 Yes Diesel Unkn 8,000 Yes Waste Oil Unknown Other Tank Piping Disp Free Prod Cont Soil Sources Removed:Yes Yes Yes No Yes b. Land Use Information Current Land use at the Site:Commercial Surrounding Neighborhood:Residential (Note: Surrounding land use is Residential if one or more residences share a common property line with the Facility) c. Soil Information Soil Type(s) Depth to Contaminated Soil (feet below land surface): 4'CL-Inorganic clays USC-1 and USC-2 CH-Inorganic clays and fats USC-3 Method of Soil Type Identification:Unified Soil Classification d. Groundwater Information Was groundwater encountered?:Yes Thickness of Free Product:None Depth to groundwater (feet below land surface): unk Is groundwater impacted at any concentration: No Groundwater flow direction:E Inferred Slope direction of surface topography:E e. Distance from Highest Measured Contaminated Concentrations and Sampling Location to Nearest Potential Receptor Receptors:(Enter distance to each receptor from corresponding sampling location in feet) Distance- Location Distance- Location Water Line:>30' - SS-11 Sewer Line:~10' - SS-11 Building Desc:Commercial Electrical:~10' - SS-3 Natural Gas:~10' - SS-11 Other Desc:Car Wash Building:~20' - SS-11 Telephone:~10' - SS-3 Property Line ~5' - SS-3 Storm Drain:>30' - SS-11 Other(specify): - Receptors Within 500 feet: Municipal Well:~250'Domestic Well:>500'Irrigation Well:>500' Other: Surface Water(specify type: lake, stream, creek, river, wetland):Dist: None Desc: None Utah's RBCA Tier 1 Worksheet Printed on: 10/8/2024 4:57:45 PM Facility History - Executive Summary Three tanks (1 compartmented tank plus 1 tank) were permanently closed and removed from the Speedway #9411 July 10, 2024. During excavation activities staining was discovered and potential contamination was discovered near two of the dispensers. The dispensers in question are nearest soil sample 6 and 7 (SS-6 and SS-7). Groundwater was not encountered during excavation activities. SS-6, SS-7, and SS-11 were taken after contaminated soils were excavated to serve as confirmation samples. No soil concentrations were above initial screening levels (ISL's). Dispensers and piping were also removed from the site. The three tanks were inerted with dry ice and taken to ACE Intermountain Recycling Center. 622 gallons of contaminated water from cleaning was disposed of at STC Industrial Services. 53.68 tons of contaminated soil was excavated and taken to E.T. Technologies for disposal. The contamination levels are all under ISLs, therefore the DERR is recommending this site for no further action. It is neither economically nor technologically feasible to further remediate contamination at the site. RBCA Tier 1 Screening Level Evaluation Groundwater(mg/L)Soil(mg/Kg) Constituent ISL/Tier 1 Level Highest Concentration and Sampling Location ISL/Tier 1 Level Highest Concentration and Sampling Location Benzene 0.005/0.30 NA NA 0.20/0.90 0.00906 SS-3 Toluene 1.0/3.00 NA NA 9.0/25.0 <0.00639 SS-9 Ethylbenzene 0.7/4.00 NA NA 5.0/23.0 0.74600 SS-7 Xylenes 10.0/10.0 NA NA 142.0/142.0 0.09430 SS-7 Napthalene 0.70/0.70 NA NA 51.0/51.0 0.03900 SS-7 MTBE 0.20/0.20 NA NA 0.30/0.30 <0.00131 SS-10 TPH-gasoline 1.0/10.0 NA NA 150/1500 1.72000 SS-7 TPH-diesel 1.0/10.0 NA NA 500/5000 11.90000 SS-3 Oil and Grease/TRPH 10.0/10.0 NA NA 1000/10000 NA NA Recommended Tier 1 Actions All contaminant concentration levels are below ISLs or below Tier 1 screening levels and no receptors are within the critical distances. Recommendation - No further action. Tier 1 criteria (contaminant concentration and/or distance to receptors) are exceeded at the site. Recommendation - See attached supplemental information worksheet. Evaluation Completed by:Date: DERR Project Manager's Signature Utah's RBCA Tier 1 Worksheet Printed on: 10/8/2024 4:57:45 PM 10/8/2024 RUL CANOPY/DISPENSERS PUL DSL CAR WASH SPEEDWAY Store No. 9411 W 12600 S S 1 3 0 0 W DUMPSTER UTILITY CONNECTION BOXES STORE SIGN UST VENTS STORE SIGN UTILITY CONNECTION BOX AIR/VACUUM P P P P P P P P P P P P P P P P P P -SIDEWALK- -S I D E W A L K - -ASPHA L T - -ASPHA L T - -ASP H A L T - -ASPHA L T - -ASPHA L T - CONCRETE UST AREA P P P P FOR: CHECKED BY:DRAWN BY:JOB NUMBER:APPROVED BY:DATE: FIGURE: 1SITE MAP SYJMCCL/AS203723863 10/2/2024 SPEEDWAY No. 9411 12592 S. 1300 W RIVERTON, UTAH 84065 N 0 20 40 APPROXIMATE SCALE IN FEET No warranty is made by Stantec as to the accuracy, reliability, or completeness of these data. Original data were compiled from various sources. This information may not meet National Map Accuracy Standards. This product was developed electronically, and may be updated without notification. Any reproduction may result in a loss of scale and or information. FILEPATH:\\us0395-ppfss01\shared_projects\203723863\05_report_deliv\drawings_design\cad_fig\Speedway 9411.dwg|cclee|Apr 18, 2024 at 15:07|Layout: 9411-SM 410 17th Street Suite 1400Denver, Colorado 80202 LEGEND: STORM WATER POTABLE WATER / METER NATURAL GAS / METER SEWER / CLEANOUT COMMUNICATION ELECTRICAL APPROXIMATE PROPERTY BOUNDARY PRODUCT LINE FIRE HYDRANT SITE LAMP STORM DRAIN CLOSURE SAMPLE LOCATION P SS-6 SS-5/USC-3 SS-7 SS-8 SS-1/USC-1 SS-9 SS-2 SS-10SS-4SS-4 SS-11 P P P P P P P P P -CONC R E T E - P P P P P P PP SS-3/USC-2 PPP PPPPP P ISL Tier 1 SS-1 SS-2 SS-3 SS-4 SS-6 SS-8 SS-9 SS-10 Soil (mg/kg) UST Closure Samples (Pre-excavation)Benzene 0.2 0.9 <0.00128 <0.00127 0.00906 0.00590 0.00489 0.00716 <0.00128 <0.00131 Ethylbenzene 5 23 <0.00128 <0.00127 0.00230 0.02260 0.00162 0.01240 <0.00128 <0.00131 MTBE 0.3 0.3 <0.00128 <0.00127 <0.00116 <0.00118 <0.00121 <0.00119 <0.00128 <0.00131 Napthalene 51 51 <0.00638 <0.00635 <0.00581 0.01380 <0.00603 <0.00594 <0.00639 <0.00655 Toluene 9 25 <0.00638 <0.00635 <0.00581 <0.0059 <0.00603 <0.00594 <0.00639 <0.00655 Xylenes 142 142 <0.00383 <0.00381 <0.00349 <0.00354 <0.00362 0.00957 <0.00384 <0.00393 GRO 150 1500 <0.638 <0.635 <0.581 <0.59 <0.603 <0.594 <0.639 <0.655 DRO 500 5000 <5.10 <5.08 11.90000 <4.72 <4.83 4.76000 <5.11 <5.24 Soil (mg/kg) Confirmation Samples ISL Tier 1 SS-5 SS-7 SS-11 (Post-Excavation) Benzene 0.2 0.9 0.00423 0.00720 <0.00127 Ethylbenzene 5 23 0.00134 0.74600 <0.00127 MTBE 0.3 0.3 <0.00124 <0.00121 <0.00127 Napthalene 51 51 <0.00619 0.03900 <0.00634 Toluene 9 25 <0.00619 <0.00606 <0.00634 Xylenes 142 142 <0.00371 0.09430 <0.00380 GRO 150 1500 <0.619 1.72000 <0.634 DRO 500 5000 <4.95 10.10000 <5.07 57-10276 Ll X Water Right 57-10276 Status: APPLUNAP Priority: 2 00 1-0 5-10 Source: Use-s: AC-FT: Owner: Underground Water wens I 4000 RIVERTON CITY CORPORATION Point of Diversion Type: Underground Locatton: N425 W147 SE 27 3S lW Sl Comment: WeJI #30 WIN: 0 Geo/. Log.: No Add to map search Zoom to Water Rights Map 57-10276 Ll X Water Rig,ht 57-10276 Status: APPLUNAP Priority: 2001-05-10 Source: Uses: AC-FT: Owner: Underground Water Wells I 4000 RIVERTON CITY CORPORATION Point of mversion Type: Undergroum:l Location: N190 E209 SW 26 35 lW Sl Comment: W'e:11 #31 WIN; 0 Geo/. Log; No Add to mar::1 search Zoom to 57-10276 Ll X Water Rig'ht 57-10276 sta us: APPLUNA'P Priority; 2 00 1-0 5-10 Source: Uses: AC-FT: Owner: Underground Water Wells I 4000 RIVERTON CITY CORPORATION P:oint of Diversion Type: U nd erg round Location: 5397 W89 NE 34 3S 1 W SL Comment: We:11 #33 WIN: 0 Geo/. Log: No Acid to map search Zoom to 12 23 4 Riverton City Water System UGRC 0 0.35 0.70.17 mi 0 0.6 1.20.3 km 1:30,075 illUSGS .,;,,•c�lor•chM�;,,gworld U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY MIDVALE QUADRAt-lGLE UTAH -SALT LAKE COUNTY 7.5-MINUTE SERIES : OKZ Location