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Home My WebLink AboutGINAMI HILLS S-5468 INTRODUCTION TS:ST F P.O. Box 10-1126 / Anchorage, AK 99510 / 2~18-1333 SOILS REPORT for LOT 1, ~ HILLS SUBDIVISION The subsurface soils investigation was performed on Lot 1 of Ginami Hills Subdivision for the purpose of subdividing a five acre lot into two equal halts, and determining if the material on each resulting lot will be able to sustain an approved septic system. This report was requested by Mr. Wesley Dentscher, an interested buyer of one of the resulting lots. SITE CONDITIONS The lot is located just North of Upper Huffman on Ginami Street. The topography of the land is is typical of the Hillside area of gently rolling terrain. The East two thirds of the lot is fairly level with a slight rise to the Southeast. The West third slopes at about fifteen percent down to the West. The trees in the area are mostly spruce with a few birch and alders scattered throughout. The ground cover is mostly marshy grasses and scattered tussics with dead fall trees abundant. SUBSURFACE SOILS Three holes were dug by a tracked front end loader with a backhole for the soil tests. Two holes were on the West half of the lot and one on the East half. An additional hole was drilled on the East half for the purpose of ground water determination only. The first hole on the West half (referred to as Lower Lot) showed two feet of overburden and silty, sandy gravel to the bottom of hole at nine feet where ground water was encountered. The second hole did not show ground water to a depth of sixteen feet. Two samples were taken for classification purposes at the two - seven foot level and at the seven - sixteen foot level. Both samples were tested for classification and found to be both silty, sandy gravels that require an absorption area of 225 square feet per bedroom for septic system purposes. The first hole on the East half (referred to as Upper Lot).encountered ground water at the six foot level. No further analysis was needed at this site. The second hole drilled for water table determination - rofesstonals worktng to destgn and build a better Alaska" SOILS REPORT (cont.) hit water at the eight foot level. The area was not explored for possible deeper water. RECOMMENDATIONS The soils investigation indicates that the West half of the lot is accept- able for the purpose of the installation of a septic drain'field system. The East half of the lot is not acceptable for a drain field system as determined by the test holes. Other septic systems are available if the owner chooses to develope his lot using these means. Additional soils investigations may reveal that the area is influenced by a 'perched water table, therefore making it possible to retest at a later date in adjacent areas for acceptable results. Kinney R. Baxte ,~.E. Senior Civil Engineer CONSTRUCTION TEST LAB ANCHORAGE- ~IR8ANKS BORING NO. PROJECT CLIENT /~(J,~'. ~/~. LOCATION VEGETATION: PREDOMINANT SUBSURFACE SOILS EXPLORATION VISUAL FIELD BORING LOG DATE LOGGED BY w.o. ~/- GROUND COVER CONSTRUCTION TEST LAB ANCHORAGE-FAIRBANKS PROdECT CLIENT ~/~'.~/~ V ~d~7~ ~/gr LOCATION //(~r /Z/q ~C;~. /! VEGETATION: PREDOMINANT SUBSURFACE SOILS EXPLORATION VISUAL FIELD BORING LOG DATE LOGGED BY W. O. GROUND COVER CONSTRUCTION TEST LAB ANCHORAGE'FAIRBANKS PROJECT VEGETATION: PREDOMINANT SUBSURFACE SOILS EXPLORATION VISUAL FIELD BORING LOG DATE ~ r//../':~Zg / LOGGED BY ~ w.o. ~I- GROUND COVER CONSTRUCTION TEST LAB 1800 W. 48TH AVE. STE. 'C' ANCHORAGE, ALASKA 99503 248-1533 .PERFORMED FORI LEGAL DESCRIPTION: THIS FORM REPORTS: Lot ~ Block a Visual Soils Examination DEPTH SOIL FEET DESCRIPTION NOTES 2.0 ' Overburden Perc Silty, sandy gravel Silty, sandy gravel BOTTOM OF HOLE WAS GROUND WATER ENCOUNTERED IF YES, WHAT DEPTH 7.5 ' LEGEND ~ -- Parc zone ® S - Sample taken yP, S ~ DATE PERFORMED: Subdivision ~Gln~ml Hills l I~ Percolati~. ,s~t.~ ~//' 2 Kinney 3656-E · -- Frozen zone ·- Water table GENERAL SITE SLOPE READING DATE GROSS TIME NET TIME DEPTH TO H20 NET DRAINAGE 1 3-24-81 10:10 A.M. 0 3" 2 10: 20 10 min. 4" 3 10: 25 15 min. 4~" 14" 10: 28 0 3 .~" 10:43 15 min. 4 3/4" 1¼" 10: 58 30 min. 6" 1¼" PERCOLATION RATE: 12 min./inch DRAINAGE REQUIREMENTS: 180 s.f./bedroom PROPOSED INSTALLATION: [3 SEEPAGE PIT n DRAIN FIELD [3 OTHER COMMENTS: TEST- PERFORMED BY: I~evi n Rrmun DATA CERTIFIED BY: Kinney _E. _~axtcr DATE: 3-24-81 CONSTRUCTION TEST LAB 1800 W. 48TH AVE. STE. 'C' ANCHORAGE, ALASKA 9950::5 248-1333 PERFORMED FOR! Weslev Deutscher LEGAL DESCRIPTION: Lot 1 /~ ' Block THIS FORM REPORTS: ID Visuol Soils Exominofion DEPTH SOIL '~,, ~' ~C FEET DESCRIPTION NOTES Overburden 2.0' Perc Zone Silty, Sandy gravel BOTTOM OF HOLE WAS GROUND WATER ENCOUNTERED Nn IF YES, WHAT DEPTH LEGEND ® -- Perc .zone ® S - Sample token i -- Frozen zone ·- Water table DATE Subdivision [ ~4,r~-?~,~ ~ Et Percolotio~TesL 3-74-81 IIIII Illll IIIII IIIII rllll IIIII Ilrll IIIII IIIII IIIII I I I IIII IIIIl~ Illllllll qlllllll, I I I I I I I I I I I I J.,4-H"'~I I I I] I I I I I I I L.g..t-'I'T ] I I I I I I I I I~P~'TI I I I I I IIFT'IIIIII'II IIIIIII IIIIIIIII GENERAL SITE SLOPE READING DATE GROSS TIME NET TIME DEPTH TO H20 NET DRAINAGE i PERCOLATION RATE: DRAINAGE REQUIREMENTS: 150 -¢/A~a~om PROPOSED INSTALLATION: 0 SEEPAGE PIT O DRAIN FIELD B OTHER COMMENTS: Perc test was attempted~ but the water would not remain to a depth in order to record a good perc test. TEST- PERFORMED BY: ~',~ ~m,,-, DATA CERTIFIED BY: v~==~y ~e~ DATE: 3-24-81 'sL% I I I I IIN~NI9 9£ '00¢ Z Z ~_ go, Z z o=~(~o£-£8) o 9NI~JtY3EI -40