DWQ-2025-001787

LARGE UNDERGROUND WASTEWATER DISPOSAL SYSTEM
OPERATING PERMIT
Utah Department of Environmental Quality, Division of Water Quality
NAME OF SYSTEM:WILLOW PARK
CONTACT NAME/ MAILING ADDRESS/ PHONE / EMAIL:Steve Marchbanks / Lehi City / 153 North 100 East Lehi, Utah 84043 / [phone] / [e-mail]
SYSTEM LOCATION:9300 West 300 North, Lehi, Utah County, Utah 84043
ISSUE DATE:March 5, 2025EXPIRATION DATE:March 11, 2030
ISSUED BY: _____________________________________________, John K. Mackey, PE, Director, Division of Water Quality
Until such time as this permit expires or is modified or revoked, the permittee is authorized to operate a large underground wastewater disposal system (LUWDS) in conformance with all
the requirements, limitations, and conditions set forth in Utah Administrative Code R317-5, with the attached schedules as follows:
SCHEDULE A
Waste Disposal LimitationsThe permittee is authorized to operate and maintain a large underground wastewater disposal system (LUWDS) that hasbeen constructed in accordance with plans
and specifications approved by the Division of Water Quality and with the following conditions:System type:Conventional Gravity
Conventional with Pump-to-Gravity
Pressure Distribution
Alternative (describe)_____________________________________________________Maximum Daily Design Flow:6,000 gallons per day (gpd)_____________________________________
Components of wastewater disposal system (check all that apply):
Grease Trap ___________________________Septic Tank(s) 1-2500 gal & 2-1750 gal tanksin series
Pump Tank w/ Floats____________________ Recirculating Tank________________________
Control Panel___________________________ EffluentTreatment________________________
Distribution Box____________________Distribution Valve________________________
Pressure Distribution____________________Drip Irrigation________________________
Trenches1,254 linear feet x 3’ wide ______Deep Trench_______________________________
Bed__________________________________ Mound_______________________________
Other (describe):________________________________________________________________________
Drainfield media:Gravel;Chambers (Describe)_______________________________________Effluent parameters will meet R317-4 for domestic wastewater or additional treatment may be required.
Discharge of untreated or partially treated sewage or septic tank effluent directly or indirectly to the ground surface or to the surface waters of the State of Utah constitutes a public
health hazard and is prohibited. This permit does not relieve the permittee from responsibility for compliance with any other applicable federal, state, or local law(s), rule(s) or
standard(s). No cooling water, air conditioner water, groundwater, oil, hazardous materials, roof drainage, storm water runoff, or other aqueous or non-aqueous substance which is, in
the judgment of the Division, detrimental to the performance of the LUWDS or to groundwater, shall be discharged into the wastewater treatment system.No activities shall be conducted
that could cause an adverse impact on existing or potential beneficial uses of groundwater.
SCHEDULE B
Required Servicing and Inspections
1.AnnuallySemi-Annually (Every 6 months)Other (specify)_______________________________
2.All servicing and inspections must be conducted by a certified maintenance person per R317-11. Level 2 is required for conventional systems and Level 3 for all other LUWDS.
Nameof person performing LUWDS maintenance:Shane Youd___________________________________________
Level 2Level 3Note: Permittee must notify the Division within 30 days if maintenance person is replaced.
3.If sample results exceed Effluent Sampling Parameters (other than flow of wastewater)listed in R317-4-13, Table 7.3, report to the Division within 5days and follow rules in R317-5-9.2.D.
Inspection Components
TYPE OF SYSTEM
Measure sludge/ scum levels, pump when necessary:Septic TankPump TankGrease Trap
Inspect and clean when necessary:Pump/FloatsControl PanelPump Filter
Flush/ cleanpressure laterals; inspect for ponding or surfacing in drainfield; Adjust squirt height for equal pressure.
Follow Manufacturers
Recommendations*:RecirculationTankPre-Treatment UnitMiscellaneous
Conventional Gravity or Pump-to-Gravity
Pressure Distribution or Drip Irrigation
Mound, At-Grade
Packed Bed
*Manufacturer recommendations may require more frequent inspections
Minimum Frequency of Periodic Inspections
TYPE OF SYSTEM
Every 12 months
Every 6 months
Conventional Gravity or Pump-to-Gravity5,000- 15,000 gal/day15,000 + gal/day
At-Grade Alternative System (first 5 years only)
Pressure Distribution, Drip Irrigation, or Mound
Packed Bed
Treatment System (to lower waste strength levels)

Monitoring and Reporting Requirements
Item or Parameter
Minimum Frequency
Type of Sample
Effluent Discharge Standards
Flow of wastewater (gpd)
Monthly
Estimate based on meter readings
Approved design flow (gpd)
Reporting
Monitoring, maintenance practices, solids handling and results shall be reported on Division approved forms and must be submitted by August 1, following the “reporting year” period of
July 1 to June 30.
Submit Annual Inspection Reports(via Email, US Mail, or Fax) to:
Email: [e-mail]: 385-501-9580Fax: [phone]
Mailing Address: Division of Water Quality,c/o LUWDS, PO Box 144870,Salt Lake City,UT 84114-4870
SCHEDULE C
Special & General Conditions
1.All septage/sludge shall be managed by a permitted liquid waste operator (septic system pumper) as defined in R317-550
2.Any observations of excessive kitchen wastes, surfacing sewage, etc., shall be reported to the Division within 5 working days.
3.The permittee must maintain all treatment and control facilities in good working order and in conformance with permit requirements.