07/16/08 Hansz to Jackola/Southfield Park PlansJuly 16, 1998
Mr. Thor Jackola
Jackola Engineering
317 First Avenue East
Kalispell, MT
59903
Reference: Southfield Park subdivision
Dear Mr. Jackola:
ON
Plans dated July 7, 1998 for Southfield Park project have been reviewed by this office.
Water system improvements: The improvements shown on the plans are satisfactory and
approved by this office subject to the review and approval of the Department of Environmental
Quality. They will connect to existing City facilities of adequate capacity.
Sewer system improvements: The improvements shown on the plans are satisfactory and
approved by this office subject to the review and approval of the Department of Environmental
Quality. They will connect to existing City facilities of adequate capacity.
Roadway improvements and approaches to existing streets: The improvements and approaches
as shown on the plans are satisfactory and are as previously discussed and agreed upon.
Storm drainage facilities: Supplemental information you have provided for the storm drainage
system has not fully convinced the City staff that this design will reliably function as intended.
We believe the high ground water in the project area is a serious impediment to the flow of storm
water from this system into the surrounding soil strata. While the submitted calculations suggest
that percolation rates at some points may be adequate under certain conditions, and the redesign
you have made does increase the apparent margin of safety for the system, we are not, at this
point, completely persuaded that the system will function for the owner in a reliable way under
adverse conditions. However, this is essentially a private system. Therefore, this office does not
object to the installation as designed.
We share your desire that these facilities operate as intended and that the owner does not
experience any future problems that cause regret at having installed this system. The City, while
not specifically endorsing this design, will join you in closely monitoring its performance in
Post Office Box 1997 - Kalispell, Montana 59903-1997
Telephone (406) 758-7700 - FAX (406) 758-7758
order to establish a sound basis for considering similar proposals in the future. For the interim,
we recommend you continue to investigate the marketplace for alternatives to this design that
may provide the superior performance needed in difficult design situations such as those
encountered in the project area. We look forward to working with you to identify alternatives
that may offer superior performance and competitive installation costs.
Sincerely,
ames C. Hansz, P.E.
Director of Public Works / City Engineer
cc: City Attorney / Interim City Manager