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Home My WebLink AboutT&T S-5693LoT ,//~, )--% ~/ MUNICIPALITY OF ANCHORAGE ~_ z ' /,~ ~:; DEPARTMENT OF HEALTH&ENVIRONMENTAL PROTECTION ENVIRONMENTAL HEALTH CASE REVIEW WORK SHEET [~] PLATTING BOARD [~] PLANNING & ZONING CASE NUMBER NAME 8-5693 Lots 1 4 T & T Subdivision DATE RECEIVED April 29, 1981 COMMENT TO PLANNING BY May 14, 1981 FOR MEETING OF CASE OF J~PUBLIC WATER N?.~T AVAILABLE TO PETITION AREA ,J~UBLIC SEWER NOT AVAILABLE TO PETITION AREA REVIEWER'S COMMENTS: 71-014 (Rev. 2/78) :~.. 344-6968 April 24,1981 Municipality of Anchorage 632 West Sixth Ave. Fifth floor Anchorage, Alaska 99501 Ref: Soils ~data for T&T Subdivision. Gentlemen: Application for plat approval. Enclosed you will find Perc test logs for test holes A,C and D. Please refer to sketch on each sheet for test location. Perc test results are summarized as follows: Location Depth O.G. to Perc rate bottom of hole minutes per inch Lot 1, T.H.-A 8.9 ft. 1.7 Lot 3, T.H.-C 9.2 ft. 6.7 Lot 4, T.H.-D 9.4 ft. 4.4 Material observed in test hole B on Lot 2 appeared clean and .was field classified as GP to SP from 2 ft. to 12 ft. below 0.G. A perc test was not warrented at this location. Please refer to Log of Test Pits for Hill Drive Improvements (T&T Subdivision) provided by Harding & Lawson for soils information on each lot.Note tht ~est Hole E~is located in the cul de sac to provide frost classification for roadway materials.Plat 4 is a partical size analysis of samples taken from test holes B and E. Plate 3 indicates frost classification for test hole E. If you should have any questions related to this project please give me a call. Very truly yours, Cortlan~ A. Broberg P.E.&L.S. HARDiNG-LAWSON ASSOCIATES 624 W. International Airport Road, Anchorage, Alaska 99502 (907) 276-8102 Telex (090) 25-149 April 21, 1981 9675,001.08 Engineers, Geologists and Geophysicists JAY M. ENGLAND Professional Engineer Vice President DUANE L. MILLER Profeisionel Engineer Mr. Cort Broberg, P.E. 8429 Jupiter Drive Anchorage, Alaska 99504 Subject: Hill Drive Improvements Dear Mr. Cort Broberg: Enclosed please find Logs of Test Pits (A through E) logged on April 9, 1981, shown on Plates 1 through 3 . The laboratory tests performed are shown on the test pit logs. The grain size distribution test results are illustrated on Plate The soils encountered were classified in accordance with the Unified Soil Classification System as explained on Plate In addition, the soils encountered in test pit E were also classified by the Corps of Engineers Frost Classification System, as explained on Plate If you have questions, please do not hesitate to call. Very truly yours, HARDING-LAWSON ASSOCIATES ~mbers JRC:cey Enclosures Laboratory Tests Minus #200 Sieve = 8.2% SA Minus #200 Sieve = 1.2% HARDING- LAWSON ASSOCIATES Co~ul~ing ]~gi~e~rs ~d Geologists Jdo No 9675,001.08 Appr~--q~te 4/81 _~,OG OF TEST PIT A Equipment Backhoe - Drott 40 Elevation -- Date Drilled 4-9-81 -- BROWN-GREEN MOSS & ORGANICS (Pt) BROWN SILT (ML) medium stiff, moist BROWN-GRAY SILTY SANDY GRAVEL (GP-GM) dense, moist no free water encountered LOG OF TEST PIT B. Equipment Backhoe - Drott Hoe Elevation --_Date Drilled 4-9-81 -- BROWN-GREEN MOSS & ORGANICS (Pt) BROWN SILT (ML) medium stiff, moist SILTY GRAVEL (GM) medium dense, moist ~ ,~. BROWN GRAY SANDY GRAVEL (GP) '~ . dense, moist ~ rounded particles to 6" diameter 'GRAY MEDIU~ TO COARSE SAND (SP)' ~- dense, moist ' ~ BROWN SANDY GRAVEL (GP) ~ dense, moist ~ BROWN SANDY SILT (ML) stiff, moist -- GRAY-BROWN SILTY FINE SAND (SM) dense, moist-wet __ BROWN SANDY SILT (ML) stiff, moist no free water encountered LOG OF TEST PITS A & B HILL DRIVE IMPROVEMENTS Anchorage, Alaska PLATE 1 Laboratory Tests ~OG OF TEST PIT C Equipment Backhoe - Drott 40 Elevation -- Date Drilled 4-9-81 BROWN-GREEN MOSS & ORGANICS BROWN SILT (ML) medium stiff, moist with some gravel @ 2.0' BROWN SILTY GRAVEL (GP) dense, moist (Pt) increase in silt content @ 7.5' 3" thick lense of silty sand (SM) medium dense, wet ko moist @ 8.7' BROWN SILTY SANDY GRAVEL (GM) dense, moist no free water encountered LOG OF TEST PIT D Equipment Backhoe - Drott 40 Elevation -- Date Drilled 4-9-81 BROWN-GREEN MOSS & ORGANICS (Pt) BROWN SILT (ML) with some gravel size particles BROWN SILTY GRAVEL medium dense, moist GRAY SANDY GP~AVEL (GP) dense, moist to dry Minus #20'0 Sieve = 2.8% HARDING- LAWSON ASSOCIATES JohN O, 9675,001.08 Appr:~<~)~e 4/81 IROWN-GRAY SANDY SILT (ML) medium stiff, wet to moist BROWN SILTY GRAVEL (GM) dense, moist some seepage @ 12.0',less than 1/4 gallon/minimum no free water encountered LOG OF TEST PITS C & D. HILL DRIVE INPROVEMENTS Anchorage, Alaska PLATE ' Laboratory Tests NA Ninus #200 Sieve = 1.7% Minus #200 Sieve : 4.9% ~JOG OF T~$T PIT ~ Equipment Backhoe - Dr~tt 40 Elevation -- Date Drilled 4-9-81 BROWN GREEN ~IOSS & ORGANICS (Pt) BROWN SILT (ML) F-4 medium stiff, moist GRAVELLY SILT (ML) F-4 stiff, moist roots to 1,4' BROWN-GRAY SANDY GRAVEL (GP) dense, moist, particles rounded- subrounded and up to 5" diameter no free water encountered HARDING- LAWSON ASSOCIATES ~ No 9675,001.08 Appr:~. _ Date 4/81 LOG OF TEST PITS E HILL DRIVE IMPROVEMENTS Anchorage, Alaska PLATE 3 U~S. Slandar~ Sieve Openin9 Size U;S.Standard Sieve Numbers Hyclrometm' IO 5 I 0.5 C GRAIN SIZE IN MILLIMETERS 005 001 0.005 SAND GRAVEL COA RSI~ MEDIUM I COBBLES I COARSE I FINE FINE I SiLT OR CLAY Symbol Sample Source Test Pit B at 7.0' Test Pit E at 3.0' HARDIN0- LAWSON AtiSOCIA?I~S Consulting Engineers c~d Geologists JobNo 9675.001 ~08 Appr:~-Date '4/81 Classification BROWN SANDY GRAVEL (GP) BROWN SANDY GRAVEL (GP) PARTICLE SIZE ANALYSIS HILL DRIVE IMPROVEMENTS Anchoraae. Alaska PLATE 4 UNIFIED SOIL CLASSIFICATION SYSTEM °T. 320 (2600) TxCU 320 (Z&O0) DS "2750 (2000) KEY TO TEST DATA HARDING- LAWSON ASSOCIATES Consulting Engineers and Geologists 9675, OO1.08 Appr.~-~ate 4/81 No OIL CLASSIFI(;:ATION CHART AND KEY TO TE~iT DATA HILL DRIVE IMPROVEMENTS PLATE 5 GrouR F1 Kind of Soil Gravelly soils Percentage Finer Than 0.02 mm by Weight 3 to l0 Typical Soil Types Under Unified Soil Classification System GW, GP, GW'GM, GP-GM F2 (a) Gravelly soils (b) Sands l0 to 20 3 to 15 GM, GW-GM, GP-GM SW, SP, SM, SW-SM, SP-SM F3 (a) (b) Gravelly soils Sands, except very fine silty sands (c) Clays, PI ~12 Over 20 Over 15 GM, GC SM, SC CL, CH F4 (a) (b) (c) (d) All silts Very fine silty sands Clays, PI < 12 Varved clays and other fine-grained, banded sedi- ments Over 15 ML, MH SM CL, CL-ML CL and ML; CL, ML, and SM; CL, CH, and ML; CL, CH, ML, and SM Reference: Corps of Engineers, U.S. Army TM 5-818-2, 13 July 1965 HARDING-LAWSON ASSOCIATES FROST DESIGN SOIL CLASSIFICATION (~ Co~ti~i~eer~a~Geol°~ HILL DRIVE IMPROVEMENTS Anchorage, Alaska Jobb~ 9675,001.08 A;:g~';~m 4/81 PLATE 6 × / MJ ALPS AVENUE ~ _¢ I LEGEND REC (N) KARVtEW SUBDI (PLAT 77-74) REC (ATS) ALPINE TERRACE SUBD. (PLAT 64-65d) CURVE DATA ARC QORVE DELTA RA _B!l.J~ LENGTH TANGENT LOT 2 :::1{ LOT ] I/ : [} REC (SS) {NR) o NOTES l. DISTANCE WAS MEASURED FROM I/4 COR 25/24 (~__ HILLSIDE DR.) T( C--Wl/16COR SECTION 24, TIGN RsW (~ HIOEAWAY DR.). SET S.W. cOP. LOT 2 BY PROPORTION. 6... OF HIDEAWAY DR 50' IN EASTERLY DIRECTION PROM N.E COR. OF LOT 4 LOCATED BY INTERSECTION. ZONING Ri6. 5/8"0 X 50" REGAR SET AT ALL LOT CORNERS ~ POINTS OF CURVE UNLESS OTHERWISE SHOWN. ACCEPTANCE OF DED/CA T/ON STRUCK SUBD. (PLAT 78-55) NON RADIAL SUP VEYOR'$ CERTIFICATE CERTIFICATE OF OWNERSHIP and DEDICA T/ON hereby cer[if~ that I (we) ho/d ~he here¢n speclfi~d ¢foperty BENEFICIARIES TO DEED OF TRUST T8 28 27 FAXCERTIF/CATION TS14.. o, 1 ~ . LO I T RU 4, TB~T SUBDIVISION · pale A Subdivision of S 112, SE 1/4, SW 114, NW 1/4, SECT 24, I ~ ~ A TI2N, R3W, S.M, AK. C NW ~/4, SECT Z4, TMON, R~W, S.M, AK m . ,,--,--, ~ mil PROFESSIONAL ENGINEERING CONSULTANT . ........... ,. ....... - .... I ' ,lid l~ I, DTio0~9~-~~I 1981-596~.