04-13-1992 Council Packet - Laserfiche WebLink

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P-te>.^rx,pi'i- rn%'' il^.- ^5:- PM pp: m. %■ftr- ;^i'x ■ ' • ' •' .'■iSJ';' . rbJ;- W i r -M M& - ■r^-f. ^ij- M- A vM ■ >?■? , .^r • •feK' ^■ % » -V p, n )p ■ ■ fc-v- Uv : ;e:^ •Vm liM'''--m.m P' t- -^ NP i«^-Sfrf,E-»; wfeiw' iP m^-. wrR:-I. f- EXHIBIT P TOx FROM: DATE; SUBJECT; Jeanne A. Mabusth, Building & Zoning Administrator Stephen Weckman, On-Site Systems Manager March 12, 1992 #1721 Albert D. Hanser - Subdivision - Septic Review Soil testing has been completed and a report submitted to the City for review. A five lot subdivision is proposed, including one existing residence and four new building sites. I would make the following comments: tot 1 Lot 2 Lot 3 umm.i a^a- Both the main residence and guest house have existing septic systems which appear to be functioning adequately. Slope at the tested sites 0-4%. Percolation rates average 8.1 mpi at 16' depth. Depth to seasonal saturation (mottling) is 2.3-2.5'. Due to shallow seasonal saturation, both sites require mound drainfields. Topographic location and site drainage is adequate. All setbacks meet Code. Slope at the tested sites 0-4%. Percolation rates average 8.8 mpi at 16" depth. Depth to season saturation (mottling) is 2.5-2.8'. Due to shallow seasonal saturation, both sites required mound drainfields. Topographic location and site drainage is adequate. All setbacks meet Code. Slope at the tested sites averages 3-9%. Percolation rates average 10.6 mpi and 2.3 mpi at 16" depth for *the primary and alternate drainfield sites respectively. Depth to seasonal saturation (mottling) is 1.7' in the primary site, but not observed in the alternate site. Both sites are acceptable mound sites, however the alternate site may allow a standard trench upon further testing. Topography and drainage is adequate. All setbacks meet Code.