HomeMy WebLinkAboutgr00090_000050_pg131June 11, 1979 Page 3
Official Rose stated that Staff would recommend that Council give the
applicant direction as to ponds, public right-of-way, and culverts.
Councilmember Ziebarth questioned how much ponding would be on public
property and how wide the ditch would be. Official Rose indicated it would
be 1 or 2 feet above the bank on street right-of-way. The ditch would have
a 5-foot base with 3 to 1 slopes and would be approximately 2 to 3 feet
deep. The opening at the top would be 8 or 9 feet.
Councilmember Ziebarth stated he had a problem with the manner in which
to proceed. The developer could present several proposals and it becomes
a matter of what the city can live with. He suggested the Council should
indicate what they disapprove of and the engineer could use that to base
his recommendation. He felt the size of the ponds would allow the water
to stand for some time and create mosquito problems, etc. He didn't think
the slopes would be as great.
Councilmember Rowley expressed concern with the standing water and, when
the pond is full, where would the water go. It would be undesirable should
pumps be required. She stated she was not pleased with the ponding partially on
the public easement; she felt it should all be on private property.
Mayor McCarty and Councilmember Forslund both indicated they thought the
plan should employ a gentle slope rather than a deep ditch.
MS (Forslund/McCarty) to have Short -Elliott-Hendrickson review the plans
and specifications for a recommendation and input, since this is a first
step in this direction. This review would be done at developer's expense.
MS (McCarty/Ziebarth) to amend the motion to add that Building & Zoning
Official Rose be instructed to give SEH information as to the type of
system that Council desires.
Keith Nelson, Duane C. Olson Engineers, clarified the applicant's proposal.
He stated the applicant is proposing a 3 to 1 slope which is 3-feet hori-
zontal to 1-foot vertical. The ditch would have a 5-foot bottom and would
be 28-feet from the back of the curb. It would be 2 to 3 feet higher than
the street along Ardan Avenue. The ditch could handle 10 to 30" per day
and could retain for three days after a 100-year event. When the ponds
were full, they would overflow into the street and the storm sewer could
take the overflow. Mr. Nelson stated he couldn't see the merits of
installing culverts.
Councilmember Ziebarth questioned where the water lines would run. Mr.
Nelson indicated there may be a portion of the 4" bituminous curb removed
and replaced. The sewer would be 20 feet inside the property line and
would have adequate depth with 7-foot cover to protect from freezing.
At this point, City Administrator Nelson suggested the applicant should
delineate what he intends to do, since what he indicated tonight and what
he had indicated to Staff previously were two different things.
Mayor McCarty asked whether it would be feasible to employ gentle slopes
rather than a ditch. Mr. Nelson indicated they were concerned with the
aesthetics of the lots; they didn't want a low swail constantly full of