DDW-2024-013623

Park City Municipal Corporation ~ 445 Marsac Avenue ~ P.O. Box 1480 ~ Park City, UT 84060-1480
Phone: [phone]

Harrison Holley, P.E.
Public Utilities Engineer
1053 Iron Horse Drive
Park City, UT 84060
Phone: [phone]
Email: [e-mail]

November 25, 2024

Danielle Zabelean, P.E.
Division of Drinking Water
Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84114

Re: Park City Municipal Corporation Water System #22011 – 835 Empire Avenue Park City
Minimum Separation Requirement – Exception Request

Dear Ms Zebelean:

Park City Municipal Corporation Public Utilities Department has reviewed the Residential
Single Family-Addition plans located at 835 Empire Avenue, Park City, UT 84060.

Due to a narrow lot and
existing conditions the sanitary
sewer lateral and water service
line are within 3.5 feet of each
other as the utilities enter/exit
the home footprint, Figure 1.

Due to the sewer main
location/elevation and cover
requirements, the sewer lateral
alignment shown is the only
feasible option to allow gravity
feed from the residence to the
sewer main. This is based on
information from Snyderville
Basin Water Reclamation
District.
Figure 1: 835 Empire Ave Utility Layout

Park City Municipal Corporation ~ 445 Marsac Avenue ~ P.O. Box 1480 ~ Park City, UT 84060-1480
Phone: [phone]
The required sewer location results in a small window for the water service line to installed south
of the sewer lateral. It may appear that the water service line can be moved further south as it
exits the home, but the mechanical room and foundation wall is inset from the edge of the house
as shown in Figure 2. The water service line is shown exiting from the southernmost point of the
foundation.

Figure 2: Profile View of Foundation Inset
Sewer lateral pipe material is 4” PVC. Water service line material is 2” HDPE pipe. The
minimum vertical separation between the water service and sewer lateral is approximately 30” as
the utilities enter/exit the home footprint which meets the 18” vertical separation requirement of
DDW. High Groundwater has not been observed in the area.

Based on the conditions described above, the water service line and sanitary sewer lateral can't
be installed with the required horizontal separation required by Division of Drinking Water. It is
proposed that the 2” water service to the home be fully encased in flowable fill concrete 12”
above, below and on each side the water line from the home foundation to the water meter,
Figure 3.

Park City Municipal Corporation ~ 445 Marsac Avenue ~ P.O. Box 1480 ~ Park City, UT 84060-1480
Phone: [phone]

Figure 3: Recommended Mitigation
Based on the conditions described above, we respectfully request an exception to the Minimum
Separation Requirement R309-550-7.

Please let us know if additional information is needed.
Sincerely,

Harrison Holley, P.E.
Public Utilities Engineer