DWQ-2025-000760

Jared Holt
New Castle Biogas, LLC
Holt Dairy
Bar V Holdings, LLC
P.O. Box 130
Enterprise, Utah 84725
Dear Mr. Holt:Subject:Holt Dairy Digester
On January 22, 2025, the Division of Water Quality (DWQ) received the Project Manual for theHolt Dairy Digester. This Project Manual contained the engineering plans and specifications
for the new Digester. During the review of the Project Manual there were a few minor corrections that were required.
The corrections have been made and a revised Project Manual was received by DWQ on January 23, 2025. The Project Manual was prepared by GEM Engineering, Inc. and signed and stamped
by Utah Certified Professional Engineer (P.E.) Robert W. Corry, P.E.The following is a summary of the proposed major construction projects:
There are two existing lagoons that contain the waste water coming from the current milking barns of the dairy. The larger southern lagoon is being taken out of use.
In its place a new Digester will be constructed. The Digester is a covered lagoon to capture the methane coming form the waste water in the lagoon. To protect groundwater the new digester
will be lined with a High Density Polyethylene (HDPE) liner.
The Digester only takes up a portion of the original lagoon and in the future the remaining portion will be a future lagoon and a Construction Permit will be issued at that time.The
plans and specifications, as submitted, comply with the Utah Water Quality Rules, (R317, Utah Administrative Code). A Construction Permit is hereby issued as constituted by this letter,
subject to the following conditions:Any revisions or modifications to the approved plans and specifications must be submitted to DWQ for review and approval, before construction or implementation
thereof. Please submit any changes for review and approval directly to Woodrow Campbell, P.E., of the DWQ Ground Water Protection Section.A written operations and maintenance manual,
containing a description of the functioning of the facilities, an outline of routine maintenance procedures, and all checklists and maintenance logs needed for proper operation of the
system, must be submitted and approved before the final inspection and operation of the system.The approved facilities must not be placed in service unless DWQ has conducted a final
inspection, reviewed and approved the As-Built Construction Certification Report, and provided written authorization to place the constructed facilities in service.Construction activities
that disturb one acre or more are required to obtain coverage under the Utah Pollutant Discharge Elimination System (UPDES) Storm Water General Permit for Construction Activities. The
permit requires the development of a storm water pollution prevention plan (SWPPP) to be implemented and updated from the commencement of any soil disturbing activities at the site until
final stabilization of the project. For more information, or to obtain permit coverage on-line, please go to: http://www. waterquality. utah.gov/UPDES/stormwater. htm
The plans and specifications for this project have been stamped and signed by a Professional Engineer currently licensed to practice in the state of Utah. The construction design, inspection
supervision, and written construction certification of all work associated with this Construction Permit must be performed by a Professional Engineer licensed to practice in the state
of Utah.
This Construction Permit will expire one year from the date of its issuance, as evidenced by the date of this letter, unless substantial progress is made in constructing the approved
facilities or the plans and specifications have been resubmitted and the construction permit is reissued. This permit does not relieve you, in any way, of your obligations to comply
with other applicable local requirements. You may contact Jeremy Roberts, Southwest Utah Public Health Department at 435-986-2582, or Paul WrightDEQ District Engineer at 435-896-2590
for further assistance regarding local matters.
Please contact Mr. Campbell at the beginning of construction to allow periodic inspections to be scheduled. Upon completion of the project, a final inspection and approval of the As-Built
Construction Certification Report is required before the approval to operate the completed facilities can be issued. Please remain in contact with Mr. Campbell to schedule the final
inspection. The Construction Certification Report with final as-built drawings must include test results for the following construction quality assurance and quality control (CQA/QC)
elements:
Soil Subgrade
Proctor Curves,
Soil Classification,
Field Compaction Testing
Permeability, and
Subgrade Acceptance Certification.
Flexible Membrane Liner
Panel Placement Log,
Trial Seam Test Log,
Seaming Record,
Seam Test Record,
Repair Log,
As-Built Drawing,
Manufactures Certification including QA/QC Testing of the Rolls, and
Professional Engineer Certification.
ConcreteConcrete Mix Verification,Concrete ASTM Testing Method, Frequency, and Results,Concrete Testing Pass/Fail Criteria, andCrack Inspection and Repair.
If we can be of further assistance, please contact Mr. Woodrow Campbell at [e-mail] or [phone].
Sincerely,
John Mackey, P.E.
DirectorJKM/WWC/LLW:Attachments (1):Project Manual for the Holt Dairy Digester (DWQ-2025-000759)cc:w/o AttachmentsPaul Wright, DEQ District EngineerJeremy Roberts, Southwest Utah Public
Health DepartmentRobert W Corry, PE SE, GEM Engineering, Inc. ([e-mail])Jared Holt, Holt Dairy, ([e-mail])