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Home My WebLink AboutSUB198400021 Assessment - Groundwater 1983-12-10 GEOLOGIST SUBSURFAC PLORATIONS, FOUNDATIONS, EARTH DAMS. SO ALYSIS. 1111 ROSE HILL DRIVE E.O.GOOCH BLAST DAMAGE. GEOLOGICAL & LAND USE STUDIES & REPORTS CHARLOTTESVILLE,VA.22901 CHARLOTTESVILLE (804)293-7780 ENGINEERS • �j H.G.LAREW,P.E. E. 0. GOOCH AND ASSOCIATES CHARLOTTESVILLE Consulting Geologists and Engineers December 10, 1983 Mr. Michael C. Wholley c/o William S. Roudabush, Inc. 914 Monticello Road Charlottesville, Virginia 22901 Re: Percolation Tests Lot 3 Parcel 17 - Tax Map 73 Intersection of State Routes . 637 and 682 Near Ivy, Virginia Dear Mr. Wholley: As requested, we have run a series of percolation tests on Lot 3 inorder to determine the measured percolation rates of the soils in the vicinity of a proposed building site on the ridge just east of State Route 682. The percolation test results are shown on the enclosed soil profile sheet along with the soil profile hole logs which were submitted with our earlier report. The measured percolation rates meet the current Health Department requirement of a 120 rate or better. Thus, the soils in the area tested are suitable for drainfield construction. We suggest that drainfield lines be placed approximately 30 inches below the existing ground surface. Some rock may be encountered during drainfield construction. We hope this is the information you need. If you have any questions, please let us know. Very truly yours, E.O. Gooch and Associates Steve Gooch SPG/fg Viiirsz.7.1111.1E0 Enclosures t 1983 7SPTs BY�—--- E. O. GOOCH & ASSOCIATES Consulting Geologists and Engir...ers Soil Profile ' Subdivision Wholley Property Location n• N Lot No. 3 .v gR / ICO �+Sut \ 0 /; \ N''.. N ttlei! 7 A- "--. --, / r j 4 S _ e \ 15 ScatQ. / -zoo t G c '� " 1 LLL_[J GCKu: u _ it•at E j" cor- At,n fiePc, • Hole Slope Depth Material Description Percolation (in.) Rate A 12% 0-12 Topsoil 10 12-24 Red sandy clay 24-36 Red-brown micaceous sandy silt 36- Hand auger refusal - supected bedrock B 12% 0-12 Topsoil -- 12-24 Red sandy clay 24-36 Red-brown micaceous sandy silt 36- Hand auger refusal - suspected bedrock C 13% 0-12 Topsoil 80 12-42 Red clayey sand 42-60 Brown micaceous sandy silt 60- Hand auger refusal - suspected bedrock D 10a4 0-12 Topsoil 60 12-36 Red clay and weathered rock 36-48 Brown micaceous sandy silt and weathered rock 48- Hand auger refusal - suspected bedrock E 11% 0-12 Topsoil 48 12-24 Red-brown sandy clay 24- Hand auger refusal - suspected bedrock F 17% 0-12 Topsoil 60 12-30 Red clay 30-48 Red-brown micaceous sandy silt Soil Profile -continued- • Wholley Property Lot 3 Hole Slope Depth Material Description Percolation (in.) Rate G lj% 0-12 Topsoil -- 12-24 Red-brown micaceous silty sand 24- Hand auger refusal - suspected bedrock H 17% 0-12 Topsoil 17 12-30 Red clay 30-48 Red-brown micaceous sandy silt 48- Hand auger refusal - suspected bedrock I 12% 0-12 Topsoil 17 12-30 Red sandy clay 30-48 Red-brown micaceous silty sand 48- Hand auger refusal - suspected bedrock J 14% 0-12 Topsoil • 20 12-36 Yellow-brown to red-brown micaceous silty sand 36- Hand auger refusal - suspected bedrock K 13% 0-12 Topsoil 60 12-24 Brown-red sandy clay 24-48 Red-brown micaceous sandy silt 48-60 Red-brown micaceous silty sand L 12% 0-12 Topsoil -- 12-24 Brown micaceous silty sand 24- Hand auger refusal - suspected bedrock M 13% 0-12 Topsoil -- 12-30 Brown micaceous sandy silt 30- Hand auger refusal - suspected bedrock N 8% 0-12 Topsoil -- 12-42 Red clay 42-66 Red-brown micaceous sandy silt O 10% 0-12 Topsoil -- 12-36 Brown clay 36-66 Red micaceous sandy silt Soil Profile - -continued- Wholley Property Lot 3 Hole Slope Depth PJaterial Description Percolation (in.) Rate P 9% 0-12 Topsoil -- 12-42 Red clay 42-66 Red micaceous silt Q 10% 0-12 Topsoil -- 12-30 Red-brown sandy clay 30- Hand auger refusal - suspected bedrock R 10% 0-12 Topsoil -- 12-42 Red clay 42-72 Red-brown micaceous sandy silt 3 10% 36 Red-brown micaceous silt 80 • T 8% 36 Red-brown micaceous silt 80 U 10% 27 Red micaceous sandy silt 48 Remarks: Favorable percoaltion rates can be expected in the micaceous sandy silt and micaceous silt in the vicinity of holes N,O,P and R. Percolation test results indicate that the soils in the vicinity of holes A,B,C,D,E,F,H,I,J,K,L,M,S,T, and U have percolation rates that meet the current Health Department requirements. Percolation tests in this area were run at depths ranging from 27 inches to 36 inches below the existing ground surface. Some rock may be encountered during drainfield construction.