1997-009348 - new septic system - Laserfiche WebLink

Home Browse Search

110ch s `oll fc,5ting I Liar[ l t��, (.'itV :).`�'�.; iiK 0 Homebuilders Inc . 12/19/96 3134 130th Ave. N .W. Coon Rapids , 'Finn. lob Site; Lot 7 911c 1 Feadow -Wood Addition, Orono, Finn. Percolation tests and soil boring were done on this lot in July of 1993 and at that time it was determine that there was two sites that are suitable to locate mound systems on. See the report dated8/9/96 for the details. ^hese sites should be rechecked in the spring to see if the percolation r-tes are the same, percolation tests can not be accurately done at thl.s time due to the winter conditions. However the land conditions are the same as was encounter in 1993 ( no fill was added or excavtion occured on the proposed sites ) therefore it can be assumed that the Game percolation rates exist. "orings were done and -mottled soil was found. at 18 inches , this is the same level that was found in 1993• Therefore at this time we will use the same percolation rates to size out the mound system at this time, however future perc tests will be done in the spring ( prior to irstallation ) to verify this sizing factor. The ave. Pere . rate in the primary site was 39. 3 min/in. and the depth to mcattled soil was at 18-24 inches . The size of mound system needed for a 4 bedroom home 4-based-en ( based on (00 gal/day daily water, useage and a Pere . rate range of 4 46-60 min/in. the sizing factors ) would be the following size; 0"FhATL ST7,F 352E S �.FT. 1Tpslope _Length- -79 ft. Downslope Length--93 ft. Width--41 ft. Rock Sed Size---550 sq. ft. ' Width--10 ft. Length--55 ft. Amount of materials needed ; Srand---- 230 yds. 325 tons Ave. Depth--1 . 7 ft. }dock-- 21 yds . 30 togs "----1 . 0 ft. randy Loam 4.0 yds --1 . 0 ft. -ropsoil ---100 yds . ---9 inches -he above amounts could vary by plus or minus 10 . 'T'his mound must be pressurized therefore 'a pump tank. and a pump is needed ; Size of pump tank--1000 gallon Size of pump-- 40 g.p.m(must overcome at least 17 ft. head press . ) i'umping Hate--168 gal/cycle ( 4 cycles/day ) An alarm system must be installed in the house to indicate pump failure this must be both a sound and a light alarm system.