HomeMy WebLinkAbout1987-03-28 Septic System Design ReportSYSTEM DESIGN
FOR JOHN IDSTROM
OF LOT 1, BLOCK 1, BEAU MARAIS
ORONO, MINNESOTA
3-28-87
1. Percolation Rate, Type of System.
Use the alternate site because it is closer to the proposed house. 10.4
minutes per inch and a shallow trench system.
2. Proposed Flow Rate.
3 bedrooms @ 150 G.P.D. = 450 G.P.D.
3. Soil Treatment Area Required.
Us, factor x 450 G.P.D. = 900 Sq. Ft. minimum.
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4. Size cnd Number of Trenches.
Three trenches 3 feet wide and 100 feet long = 900 Sq. Ft. These trenches
would be spaced a minimum of 7.5 feet apart and be around 1 foot deep in
the natural suil.
5. Drainfield Rock Needed.
33.3 cubic yards of rock is needed to have 6 inches under and 2 inches over
a 4 inch distribution pipe.
6. Septic Tanks.
Two septic tanks of at least 1000 and 750 gallons are needed. In addition,
a third pumping tank and pump are needed to reach the higher drainfield area.
7. Additional Information.
All construction and materials must adhere to the requirements of the City
of Orono. Both of the proposed drainfield areas must be kept free from
grading and construction traffic to preserve the natural soil. Runoff water
must oe diverted from the drainfield area.
If any additional information is needed, please contact me.
Sincerely,
PERCOR, INC.
iar S. Gronberg,
PCA certified
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