HomeMy WebLinkAbout1990-03-30 Memo, Septic System DesignTo: Jeanne A. Mabusth, Building & Zoning Administrator
From: Michael P. Gaffron, Asst Planning & Zoning Administrator
Date: March 30, 1990
Subject: #1519 Fullerton Properties - Willow Drive/County Rd 6
Sketch Plan - Septic Concerns
I have transferred the soil survey information to a coot' of
the proposed plat, and would make the following preliminary
coEamff
s on the west half of the site are mainly LeSueur
pes generally 6$ or less and water table generally
than 3' below the surface. The lots designated as
and 3, BlockX?and Lots 1 and 2 of Block.2;� have
ial areas of LeSueur loam and probably will find
sites for mound systems.
3 and 4, Block .2' contain areas of Kilkenny and
Lester clay loam soils which generally are a little heavier
clay soils. Again, these lots would probably require mound
systems and both appear to have some area of acceptable
slopes.
3. The existing farmstead in Lot 5, Block,2'(2225 Sixth
Avenue North) has one 1,000 gallon pie -cast concrete tank
west of the farm house, and drainf'eld that is unknown.
Notwithstanding concerns about drainage through the west end
of this lot, there may be suitable expansion sites west of
the house. The higher ground on which most of the buildings
are located is a Hayden clay loam, often requiring mound
systems due to slow perc rate, with the areas west of the
house appearing to be a Glencoe silty clay loam which often
precludes the use of any system.
I
4. Lots 6, 7, 8 and 9 of Block Jl contain substantial areas
of Glencoe soil which often has water table at the surface
during the wet season. Lots 6 and 7 would appear to have a
drainageway from the north bisecting these lots into a front
and rear portion. Lot 6 may have some mound sites on the
fringes of the Glencoe at the front or rear of the lot. Lot
7 will have an extremely difficult time trying to find
dr -infield sites that are more than 75' from the designated
wetland area. Lots 8 and 9 are also quite low, containing
mostly wet soils. These two lots might find suitable mound
sites near the road, probably ending up in front yard areas.
Both Lots 8 and 9 have a number of drainage concerns, as
they are the receiving area for overland flows from the
west.
Zoning File #1519 - Septic Concerns
March 30, 1990
Page 2 of 2 mP N 1
5. Lot 10Vhasa little bit of everything, ii.cluding flat,
wet soils, steep slope soils, and high ground to the west.
It may be possible to find sites either just above or just
below the steep sloped Lester clay loam area.
SW=- "p -
The proposed lots in the west half and northern tier of this
proposal probably will have suitable drainfield sites- Lots 6
through 9 are very questionable due to mostly wet soils and
drainageways.
I have compiled the available soils information, topography,
and wetlands map into an overlay drawing for your review. In
proposed Lot 7, the designated wetlands appear to be more
extungive than shown by the surveyor. The same holds true for
Lot 0.
On paper Lots 7, 8 and 9 look pretty questionable. Perhaps
a site inspection will help to confirm whether these concerns are
valid.