DERR-2024-010145

Facility Information
Facility Name:SUNRISE CHEVRON Release ID:FCO
Facility Address:432 W MAIN ST DUCHESNE, UT 84021 Facility ID:9000053
Notification Date:08/19/1991
Owner Name:MUNDY LLC Reporting Party:BOB ADAMSON
Owner Address:PO BOX 269 DUCHESNE, UT 84021 Project Manager:Mark Crim
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 UNK 2-2K Yes Yes
Diesel UNK 1-6K Yes Yes
Waste Oil
Unknown
Other
Tank Piping Disp Free Prod Cont Soil
Sources Removed:Yes Yes Yes No No
b. Land Use Information
Current Land use at the Site:Commercial Surrounding Neighborhood:Commercial
(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):
5-10 SC-Clayey sands
Method of Soil Type Identification:Unified Soil Classification
d. Groundwater Information
Was groundwater encountered?:Yes Thickness of Free Product:Historic
Depth to groundwater
(feet below land surface):
6-7 Is groundwater impacted at any
concentration:
Yes
Groundwater flow direction:SE Measured Slope direction of surface topography:SE
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:5 - SS-W @5-7'Sewer Line:5 - SS-W @5-7'Building Desc:Other
Electrical:UNK - Natural Gas:>30 - SS-WSW @5-
7'
Other Desc:Currently barren
land.
Building:>30 - SS-WSW @5-
7'
Telephone:UNK -
Property Line 0 - CS-B22 Storm Drain:NA -
Other(specify): -
Receptors Within 500 feet:
Municipal Well:>500 Domestic Well:>500 Irrigation Well:>500
Other:
Surface Water(specify type: lake, stream, creek, river, wetland):Dist: >500 Desc: Strawberry River
Utah's RBCA Tier 1 Worksheet
Printed on: 8/21/2024 10:31:20 AM
Facility History - Executive Summary
Release FCO: August 1991, three USTs removed. Petroleum saturated soils noted and product float on GW. Also 3-ASTs were
adjacent to the USTs. Both AST and UST product lines abandoned with install of new PST-covered USTs approx. 1981. PST-Funded
USTs and Release ID JRH cleaned up and obtained NFA (7-2016). Some soil excavation work occurred in 2000 with confirmation
samples > Tier 1. More work needed to evaluate current conditions, as historic work shows UST and AST source areas > Tier 1 levels
for soil and groundwater. Last sampling data was 2011 for soil and 2014 for GW.
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 0.14 MW-1A 0.20/0.90 55 SS-W @5-7'
Toluene 1.0/3.00 0.013 MW-1A 9.0/25.0 497 SS-WSW @5-7'
Ethylbenzene 0.7/4.00 0.061 MW-1A 5.0/23.0 166 SS-WSW @5-7'
Xylenes 10.0/10.0 0.366 MW-1A 142.0/142.0 1,080 SS-WSW @5-7'
Napthalene 0.70/0.70 <0.005 MW-12 51.0/51.0 92.1 SS-WSW @5-7'
MTBE 0.20/0.20 <0.02 MW-12 0.30/0.30 <2.2 B-14 @5-7'
TPH-gasoline 1.0/10.0 86 MW-12 150/1500 10,300 SS-WSW @5-7'
TPH-diesel 1.0/10.0 732 MW-12 500/5000 8,950 SS-W @5-7'
Oil and Grease/TRPH 10.0/10.0 NT NT 1000/10000 NT NT
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: 8/21/2024 10:31:20 AM
8-21-2024