DSHW-2025-002714

Site Information
Finalized Yes
Facility Name Mimbach Co Compost Farm.
Facility_ID SW0434
Facility Name Mimbach Co Compost Farm.
Street Address 7750 Lower Bowl Road
City Peoa
ZIP Code 84061
County Summit County
Inspection Date 06-02-2025
Type of Visit Routine Oversite
Is the Visit Announced?Yes
Weather Conditions Sunny and 70 degrees
Inspection Goal Evaluate compliance with composting rules, and determine whether the
facility owner has a Plan of Operation approved by the Director.
Facility Contact Michael Mimbach
Participants Michael Mimbach, Al Young, Nathan Brooks, Beatriz Avila, Kelly Shaw, and
Matt Sullivan
Follow Up Inspection Needed?Yes
Recommended Follow Up Date 08-29-2025
Depart Office Date 06-02-2025
Depart Office time 09:50 AM (-6 GMT)
Return to Office Date 06-02-2025
Return to Office time 03:10 PM (-6 GMT)
1. Pre-Inspection Review
1.1 Permit Review Yes
Comment
1.2 Annual Report Review Yes
Comment
1.3 Previous Inspection Review Yes
Comment
1.4 Facility Contacts Confirmed Yes
Date Submitted: 06-03-2025 03:23 PM
Submitted By: [e-mail]
Solid Waste Program Facility Inspection Report Checklist
Page 1 of 8
Comment
1.5 Facility Contacted (If an
announced inspection)
Yes
Comment
1.6 Local Health Contacted Yes
Comment Nathan Brooks, Environmental Health Director, Summit County Health
Department
1.7 Other
Comment
2. Facility / Operational Controls (1-Good, 5-Poor)
2.1 Litter 3
2.2 Roads 2
2.3 Gate House Operations 3
2.4 Vectors 2
2.5 Communications 1
2.6 Recycling Area NA
2.7 Fugitive Dust Control 3
2.8 Waste Inspection Area NA
2.9 Scavenging Control NA
2.10 Open Burning NA
2.11 Fences, Gates, Locks,
Access Control
4
2.12 Working Face NA
2.13 Daily - Soil NA
2.14 Daily - Alternative NA
2.15 Leachate Collection System NA
2.16 Other
Comment (Required)Dust should be minimized on the roads. Fencing was needed surrounding
the property perimeter. Some litter was mixed in the windrows like used
disposal diapers and school milk cartons; the owner said they were
biodegradable. Need to improve housekeeping throughout the facility yard.
3. Signs Required / Properly Posted
3.1 Operating Days / Hours No
3.2 Directions & Procedures Yes
3.3 Emergency Numbers Yes
3.4 List of Unacceptable Materials No
Date Submitted: 06-03-2025 03:23 PM
Submitted By: [e-mail]
Solid Waste Program Facility Inspection Report Checklist
Page 2 of 8
3.5 Other
Comment (Required)Sign was up with some information, but more will be needed.
4. Operator / Representative / Employees
4.1 On-site While Open Yes
4.2 Training Yes
4.3 Other
Comment (Required)Training to be written in the Plan of Operation
5. Monitoring
5.1 Methane N/A
5.2 Random Inspections No
5.3 Leachate
5.4 Ground Water N/A
5.5 Other
Comment (Required)They currently accept biosolids that are incorporated into the composting
process on the three west windrows. It is currently undetermined whether
there is leachate.
6. Drainage / Erosion
6.1 Water Run-on Yes
6.2 Water Run-off Yes
6.3 Other
Comment (Required)Run-on and run-off controls looked acceptable for now. Controls will be
further evaluated when a Plan of Operation is submitted.
7. Proper Storage / Isolation / Disposal
7.1 Special Waste N/A
7.2 Batteries N/A
7.3 Hazardous Waste N/A
7.4 Infectious Waste N/A
7.6 Dead Animals N/A
7.7 Asbestos N/A
7.8 Bulky Waste N/A
7.9 Contaminated Soil N/A
7.10 Ash N/A
7.11 Sludge Yes
7.12 Other
Date Submitted: 06-03-2025 03:23 PM
Submitted By: [e-mail]
Solid Waste Program Facility Inspection Report Checklist
Page 3 of 8
Comment (Required)Sludge biosolids are applied to particular windrows
8. Cover
8.1 Intermediate N/A
8.2 Final N/A
8.3 Vegetation N/A
8.4 Other
Comment (Required)NA
9. Inspection Records
9.1 Random Inspection Report No
9.2 Gas Monitoring System N/A
9.3 Surface Drainage Control Yes
9.4 Daily Records Yes
9.5 Weight or Volumes Yes
9.6 Intermediate Cover N/A
9.7 Final Cover N/A
9.8 Self Inspection (Quarterly
Reports)
No
9.9 Deviation From Plans No
9.10 Permit, Permit Application,
and Rules Available
No
9.11 Other
Comment (Required)The facility inspects incoming loads but doesn’t document inspections.
Windrow temperature readings are recorded daily. Surface drainage
controls are in place, but undetermined if detention pond is designed for a
25 year rain event in a 24 hour period; that will be further evaluated when
the Plan of Operation is submitted. Self inspections are not done, but that
and deviation from plans and standard forms will be developed in the Plan
of Operation, according to the owner
10. Monitoring / Sampling / Analysis Records
10.1 Explosive Gas Monitoring N/A
10.2 Leachate Sampling &
Treatment
N/A
10.3 Ground Water Sampling
Results
N/A
10.4 Other
Comment (Required)A plastic tarp was placed on the ground to aid in runoff before any liquid
flowed into trench. This is inadequate for potential windrow runoff. See
photo.
11. Special Waste Records
Date Submitted: 06-03-2025 03:23 PM
Submitted By: [e-mail]
Solid Waste Program Facility Inspection Report Checklist
Page 4 of 8
11.1 Lab Analysis Results N/A
11.2 Manifests N/A
11.3 Treatment Certification N/A
11.4 Paint Filter Test Results N/A
11.5 Onsite Treatment
Documentation
N/A
11.6 Other
Comment (Required)No special waste records
12. Waste Tires
12.1 Acceptance procedures for
Waste Tires
N/A
12.2 Waste Tire Pile Segregated N/A
12.3 Estimated Quanitity of Waste
Tires
No
Number of Tires
12.4 Waste Tire Fund Training N/A
Comment (Required)Waste tires are not accepted
13 Other Items
13.1 Notice of Inspections Form
Completed and Signed
No
13.2
13.3
13.4
Comment (Required)Electronic spreadsheet of windrow temperatures were recorded. Other
record forms were not developed; they will need to be part of the newly
submitted Plan of Operation.
14. Special Permit Requirements
14.1
14.2
14.3
Comment (Required)NA
General Comments
Comments It was determined that the owner currently does not have an approved Plan
of Operation. They intend to prepare one. Currently there are several
operational and record keeping rules not in compliance.
Date Submitted: 06-03-2025 03:23 PM
Submitted By: [e-mail]
Solid Waste Program Facility Inspection Report Checklist
Page 5 of 8
DWMRC Inspector Signature
DWMRC Inspector Name Matt Sullivan
Date/Time 06-03-2025
Photos
Attach Photos
Entrance
Windows in the foreground and background to the right
Green waste pile used for a carbon source for the windrows
Date Submitted: 06-03-2025 03:23 PM
Submitted By: [e-mail]
Solid Waste Program Facility Inspection Report Checklist
Page 6 of 8
Piled wooden boxes and crates
Non-biodegradable trash mixed with an incoming load that made it into a windrow or
two. Owner said this mixture was a mistake and will notify the source of this matter.
What appears to be litter mixed in the windrows. Some were used disposable
diapers. The owner said most of this litter content is biodegradable and will break
down in the composting process. What is screened off is transported to Three Mile
Canyon Landfill for disposal.
Date Submitted: 06-03-2025 03:23 PM
Submitted By: [e-mail]
Solid Waste Program Facility Inspection Report Checklist
Page 7 of 8
Plastic tarp lining a trench for surface water runoff and possible leachate from
biosolids windrows.
Retention basin
Date Submitted: 06-03-2025 03:23 PM
Submitted By: [e-mail]
Solid Waste Program Facility Inspection Report Checklist
Page 8 of 8