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Commercial and Federal Facilities Section:
Clean Harbors Grassy Mountain LLC, Permit
The Grassy Mountain Facility is a commercial, hazardous waste, treatment, storage and disposal facility located near Knolls, Tooele County, Utah. It lies approximately 80 miles west of Salt Lake City, Utah, in the desert portion of the Bonneville basin near the Grassy Mountains. The site is one square mile in area and is remotely located, 25 miles from incorporated towns or permanent human habitation. It is owned and operated by Clean Harbors, which is a company licensed to do business in the State of Utah.
Because of its desert setting, the site is ideal for land disposal. Annual precipitation averages 6 inches, while the yearly potential evaporation rate averages about 48 inches. Relative humidity rarely exceeds 10 percent. There are no streams or rivers within a 40 mile radius of the facility; the nearest surface water is the Great Salt Lake, 30 miles to the northeast.
A shallow, non potable aquifer resides in the lake deposits below the site. The depth to the groundwater averages about 17 feet, and the aquifer’s flow is generally west-northwest. Because of high concentrations of dissolved solids (55,000-110,000 mg/L), the groundwater is not suitable for agricultural or domestic uses. Fresh water is trucked to the facility from Grantsville, Utah, nearly 60 miles away.
The Grassy Mountain Facility is capable of handling hazardous wastes, PCB contaminated wastes and oils, industrial wastes and other non hazardous wastes. The facility can accept liquid, solid or semisolid waste forms for treatment, storage, and/or disposal.
The Grassy Mountain Facility consists of six RCRA landfill cells, four TSCA landfill cells, one RCRA/TSCA landfill cell and three industrial waste landfill cells. Three RCRA cells and two TSCA cells have been closed along with two industrial waste cells. One TSCA cell and one industrial waste cell have never been used.
A release of two low-level organic compounds from Industrial cell 1 was investigated during 1999-2003; a risk assessment concluded that risks to human health and the environment are insignificant (below 1E-6).
The facility was reissued a RCRA Part B Permit on-line not official copy (please contact us for updated permit information) by the Executive Secretary of the Utah Solid and Hazardous Waste Control Board on May 2, 2001.
The Compliance History for Clean Harbors Grassy Mountain lists the violations identified during inspections and the resolution reached.
Clean Harbors Grassy Mountain, LLC phone number is 1-435-884-8900.
- Title Page
- Module I - Standard Conditions
- Module II - General Facility Conditions
- Module III - Storage and Treatment in Containers
- Module IV - Storage and Treatment in Tanks
- Module V - Surface Impoundment
- Module VI - Hazardous Waste Landfills
- Module VII - Groundwater Monitoring / Protection
- Module VIII - Corrective Action Plan Development Procedures for Groundwater Contamination and/or Solid Waste Management Units and Schedule of Compliance
- Module IX - Post-Closure Care
- Module X - Waste Management Plan for Polychlorinated Bihenyls
- Attachment II-WAP Waste Analysis Plan
- Attachment II-1 Facility Plan View
- Attachment II-2 Security Plan
- Attachment II-3 Site Inspection Plan
- Attachment II-3 Site Inspection Form Daily
- Attachment II-3 Site Inspection Form Weekly
- Attachment II-3 Site Inspection Form Monthly and Other
- Attachment II-4 Personnel Training Plan
- Attachment II-5 Preparedness and Prevention
- Attachment II-6 Contingency Plan
- Attachment II-6 Figure 1-1
- Attachment II-6 Figure 1-2
- Attachment II-6 Figure 2-1
- Attachment II-6 Figure 4-1
- Attachment II-6 Figure 4-2
- Attachment II-7 Closure and Post-Closure Plans
- Attachment II-8 Supplemental Waste Analysis Plan
- Attachment III-1 Container Management Building and Storage Area Dwgs. (not available electronically)
- Attachment IV-1 Tank System Designs, Assessments, Drawings and Specifications
- Attachment IV-2 Stabilization Reagent List
- Attachment VI-1 Landfill Drawings, Specifications, and Calculations (not available electronically)
- Attachment VI-2 Construction Quality Assurance Plan for Landfill Cell Construction and Closure (not available electronically)
- Attachment VI-3 Run-On/Runoff Systems Requirements (not available electronically)
- Attachment VII-1 Potentiometric Map/Velocity Map
- Attachment VII-2 Groundwater Sampling and Field Analysis Standard Operating Procedure
- Attachment VII-3 Groundwater Monitoring Parameters
- Attachment VII-3 Table-1
- Attachment VII-3 Table-2
- Attachment VII-3 Table-3
- Attachment VII-3 Table-4
- Attachment VII-4 Detection/Compliance Monitoring Protocol
- Attachment VII-5 Draft Technical Enforcement Guidance Document 1992 (EPA Link)
- Attachment VII-6 Existing Groundwater Well Specifications
- Attachment VII-6 Monitoring Well Schematic
- Attachment VII-6 Monitoring Well Schematic With PVC Slip Cover
- Attachment VII-7 Statistical Methods for Groundwater Monitoring
- Attachment VII-7 Statistical Method
- Attachment VII-8 Quarterly Measurements of Groundwater Levels
- Attachment VII-8 Water Level Measurement Checklist
- Attachment IX Post-Closure Inspections
- Attachment IX Post-Closure Inspection Form-Landfill System
- Attachment IX Post-Closure Inspection Form-Site monitoring Wells (Annual)
- Attachment IX Post-Closure Inspection Form-Site Perimeter Rain
- Attachment IX Post-Closure Inspection Form-Site Monitoring System (Daily)
- Attachment IX Post-Closure Inspection Form-Site Monitoring System (Daily)
- Attachment IX Post-Closure Inspection Form-Leachate Storage Tank System (Daily)
- Attachment IX Post-Closure Inspection Form-Site Perimeter (Weekly)
- Attachment IX Post-Closure Inspection Form-Site Monitoring System (Weekly)
- Attachment IX Post-Closure Inspection Form-Landfill System (Weekly)
Comments or Questions
If you have any question concerning the permitting or compliance of USPCI Grassy, please contact either Helge Gabert or Ed Costomiris (801-536-0200).
