4.a) Ganzel comments re 16987 197th SSTS (2)Washingtm
��County
7/29/2014
Sherri Buss
City Planner, TKDA
1500 Piper Jafray Plaza
444 Cedar St
St Paul, MN 55101-2140
Department of Public
Health and Environment
Lowell Johnson
Director
Sue Hedlund
Deputy Director
RE: Cabin Reconstruction, Sewage System, 16987197th Street (Thompson/Holloway)
While I don't have complete plans, the scope of the building reconstruction appears to involve more
than 50% of the building value. Under Section 6.2 of the Washington County SSTS ordinance, a
conforming (compliant) sewage system is required for this proposal. Based on a preliminary site
visit, the system appears to be a very small, shallow gravity mound which likely does not have
adequate separation to groundwater. For a project of this scope, a secondary system area should be
identified.
Seepage type wetland vegetation is on both sides of the creek flowing through the lot as well as in the
vicinity of the existing mound, so a wetland setback variance will likely be needed for any
replacement or secondary mound. Likely any SSTS design on the lot will be a type III system
because of insufficient suitable soil.
The potable water source is apparently a spring/stream box and pump which is likely influenced by
the mound system and other surface water and should be abandoned and a new well installed.
If you have any questions, call me at (651)430-6676
Sincerely,
61-71
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Pete Ganzel
Senior Environmental Specialist
Government Center • 14949 62nd Street North — P.O. Box 6, Stillwater, Minnesota 55082-0006
Phone: 651-430-6655 • Fax: 651-430-6730 • TTY: 651-430-6246
www.co.washington.mn.us
Equal Employment Opportunity / Affirmative Action