DWQ-2025-004811

Rob Clayton
Region 3 Director
Utah Department of Transportation (UDOT)
658 North 1500 West
Orem, Utah 84057Subject:Construction Permit for the MS4 Improvements – Manila Maintenance Station
Dear Mr. Clayton:Back on January 27, 2022, the Division of Water Quality (“Division”) issued a Construction Permit for the MS4 Improvements – Manila Maintenance Station. Due to lack
of funding the construction was not completed at that time.On June 9, 2025, the Division received a new set of drawings and specifications for this project. There were no major changes
but there were a few minor changes mainly from lessons learned from doing similar projects at other UDOT Stations. The plans and specifications were prepared byWall Consultant Group
(WCG). The documents were submitted by Josh Black and were stamped by Gary Horton, P.E.The following is a summary of the proposed major construction projects:
Construction of a new concrete retention pond that has 2 flexible membrane liners (FML) with leak detection,
New 12-inch reinforced concrete tank pad,
New 8-inch concrete curb wall,
New 8-inch slab apron,
New asphalt pavement,
New 6-foot concrete waterway,
New catch basin with drop inlet,
New stormwater retention pond with two channels lined with geotextile and riprap for erosion control.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: https://deq.utah.gov/water-quality/general-construction-storm-water-updes-permits.
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 Cindy AustrengTri-County Health Department at 435-247-1160 or Nathan Hall District Engineer at 435-247-1167 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, and
Subgrade Acceptance Certification.
ConcreteConcrete Mix Verification,Concrete ASTM Testing Method, Frequency, and Results,Concrete Testing Pass/Fail Criteria, andCrack Inspection and Repair.
Hot Mix Asphalt
Design Mix Verification
Compaction Testing
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.
If we can be of further assistance, please contact Mr. Woodrow Campbell at [e-mail] or [phone].
Sincerely,
John K. Mackey, P.E.
Director

Attachments:DWQ-2025-004786 UDOT Manila 2025 CP DrawingsDWQ-2025-004785 UDOT Manila 2025 CP SpecsEBG/WWC/DJH:cc:Rebecca Babcock Tri-County Health Department Nathan Hall, District Engineer
Gary Horton,WCG ([e-mail])Josh Black, WCG ([e-mail])Nichol Rich UDOT ([e-mail])