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Home My WebLink AboutJOHNSON-YOUNG Soils Logs & Miscellaneous [,RtA[I R AII(tlOR/\GI APfA I~,OROIJGII DLPAt]FF1LIIT f)F i llVINI)UI1FrlFAL (]tl/~l I IY 33~0 "C" Street ANCHORAGE, ALASKA 99503 1789 Performed For Johnson Young Da ted Performed__ll_~4 Legal Description L~t ...... 3 Block 1 S~bdlvlslon Johnson - Young PPrr<~lat~on Tost This Form Reports Soils log .... ~ .................. Soil Test Husl Bo Logqed To 4' Below Proposed %eopage System - Dep th }eel 1-- 3-- 5 6 Soil Ct~aracter]st~cs Sand w~th trace of s~lt gray/brown w~th lenses of coarse smmd SP Sxlty sand medzum to fmne SM Sand medium to fine wxth a trace o~ silt 9 -- 12 SP-SM Was Ground Water Encountered? ft Reading ~P-e rcol-a t l on Pro pOS O Depth COtltqEIITS On for thzs znstallat~on Date a t~ r4~ n.; e Gross Time N e t T ~ m e Depth to 1120 Net Drop l,,s~a-i-l~-t-~-~ Seepage Pit Dra~n F~eld f Inlet Depth t6--B-~--[T. 7)'lil-i)f Pi t or TrPnc[/-I-2 --' :he baszs ot the so~ls log above, 180 sq ft per bedroom ~s recomme_n_ed__d_ Test Performed BY W F Attwood__ Al A~I4A MINItRAI, & N'IA~[I RIAI,q [,AI~ Date Cet L~F~o(I BY ~. -- P a I o - ' Il-Z! [7~---- '° DLIq..,.,.c'fI'II_IIf r)F ErlvlI,'~)flIUrlYAL Otli,,,,~llY Ca',(' If 33¢0 "C" ',treat ANCtlORAGE, ALASKA 99,503 Performed For Jgh~s_o_~o_tmg Da tod Performed 11-14-74 Legal Description Lot 3 I~lock 1 Subdivision ._]Lo_lj~!s._on._-~o_u~g - -- Perrolab~on Tost lh~s Form Reports So~lo So~l Test l~,~st. Be Logqed To 4' Below Proposnd %eepage System - Depth Feet Soil Characteristics ~ 1790 Sand, medium coarse, brow, relatively SAr Silty sand, fane gray SM Was Ground Water Encountered~ Yes If Yes, At What Depth? 8' Reading Date (,ross Time Net T~me Depth to ll20 Net Drop Percolation Pate Proposed lnsta-i-l~--t~/~n- Seepage Pit Ilra]n Field Depth of Inlet Depth tG~L~i~-bf P~t or Trenc[~_~.l/2' C 0 M M [ I~ I S ~ Th~ge~_~_$o_~ have 12~ squar~ fe~ per bedroom ca~. It h~.s.~e~_ ~,t t~uaqJD~? s~[o~ ~rp~_N~h to South ~nfly, c~ a drainage into deeper Test performed ~Y~~~_~-. Date Certified AI.ASKA MINERAL & MA]ERIA[.S ~AI1 Dalo ........... All R AI'I(tI(')I//~GI ^PlA I~,OI]OU DLP/,,i,~rF1LIIT OF kHVIPOUrlFqrAL OU/ 3'~'$0 "C" Street ANCHORAGE, ALASKA 99503 Cas(' t/ 1789 Performed For Johnson Young__ Legal Descrlpt'lon Iht 3 Block This Form Reports SoIls loq ...... ~_ - So~l Test llust Bo Louqed To Dep t h [eet 1-- 3-- 4-- S _O._l ]_ C_t?_r_d_C_L e r 1 s t 1 cs Sand with trace of silt gray/brown wzth lenses of coarse smmd Below Proposed SP 5 Silty sand medium to fzne SM Sand medium to fine with a trace o~ silt SP-SM Da ted I)erformed__].l~J]~ZY4 1 S u b d 1 v 1 s ] o n J_oh_n_s_o.n_~.Y_o_u_nE Porrolat~on TPs Seepage System Was Ground Water Encountered? Yes If Yes, At What Depth? 7 1/~ ft Reading Date Gross I~me Net Time Depth to II?O , Net Drop ercolatlon Rato Mlnn',e Ilra~n F~eld Proposed insta-i-l~-t'~-~ Seepage P~t Depth of Inlet Depth ~S~[i~'l~Fbf Pit or Trenc[F-~-~ COMM[~FS On the basis et the so~ls log above, 180 sq ft. per bedroom ~s recomme~__ Test Performed BY W F. Attwood Date Ce~ t~f~e(I BY _ ALASKA MINI~RAI. & MAUhR1AI,~ I~AB ..... ?erformed For [ ) 3~;0 "C" ',t,eet ~ ANCtlORAG[, ALASKA 99503(''''} ..... _J_o.hnson-Yq_~gIlat~d Pe'~ formed 11-14-74 Legal Description. Lot 3 glocV 1 Subdivision _]_o_l]~3s_o_n_-_Y__oskgJl -- PeT-rlllaL'~on Test lh~s Form Reports So~ls Loq X ....... So~l Test ll,~st Be Logqed To 4' Below Proposed Seepage System - I)Ppth Feet So~l Characteristics.. Sand, medium coarse, bro~, relat~¥ely clean SW Stlty sand, fine gray SM Was Ground Water Encountered~ Yes If Yes, At What Depth? 8' Read~ ng Date Gross Tlme Net T~me Percolation P~-[e '----Iil i'lll J e Depth to 1120 ,.i Net Drop1 I'rOl,OSed Insta-l-lTa-tion' Seepage P~t Ilra~n F~elcl f l)epth of Inlet ____Depth to Bottom ot' P,t or Trencl~]~_}~-~, COI4M[IITS The.ma~i~J~_~o_~d..~ve 125 square fe~ per bedroom c~fl~x. It has ~en noted thnt ~uaqlude s[oges ~rpm.N~h to South gently, pr~gq~aflr~age .~tp.d~per ..... ~ ............. - ..... Test porformed IIY '~~_~ Date Ce~ L~fie(I IIY'_ .......... AI,ASKA MINHRAL & MA]EI{IAI.S ~AII gal o ............ Lot Survey Certification Lot ..~ , Block / Anchorage Record'~ng Precinct, Alaska PREPARED BY, , CO tTRACTIhIG ET~GI?IEEP, S AdD ASSOC 279 Scale 1792 ],,~= Ili 1S the responsibility of the owner, prior ~o construction, to verify proposed bu~ ld~ng grade and utlllty connections and to determine the existance of any ease- meiltS, covenants, or restrlCtlOnS which do not ap2~2~n the recorded pl at ~ '~ ~ ~ ~ ~ } LEGEND ,Frozen Material t ,January 1Ge 1974 ~tr. Edward J. Young Box 4-1202 Anchqr~:~ Rla~sk~ this Thts valid I¢:-I Sincerely, Susan E. Dtckersone Sanitarian SED/ko Certified No. 740093 lots. ar'ea. a tired RECEIPT FOR CERTIFIED MAIL SENT TO ~STREET AND NO St~E A~D'ZlP CODE OPTIONAL SERVICES FOR ADDITIONAL FEES REi~ORN I Shows to whom and-date delivered W~th delivery to addressee only hECklPT ~ ~ERVICES 2 Shows te whom date and where,delivered With del very to addressee only DELIVER TO ADDRESSEE ONLY ~PECIAL DELIVERY (extra fee require~d) PS Form 3800 Apr 1971 30¢ (plus postage) POSTMARK OR gATE 36¢ , NO INSURANCE COVERAGE PROVIDED-- NOT FOR INTERNATIONAL MAIL you ma~ 2ED\FO anagu E' DIcF~aou' Vi D( ¥ pox ~]~.' Eq~g~,q '~' Aonu8 O~:Z ' OU~ , / ALASKA GEOLOGICAL CONSULTANTS ANCHOI~AGE ALASKA GEOLOGY FO0~OATIONS TESTING A~O SITE EXPLORATION MI~ING EVALUATION. SFUOIES GEOLOGY , · 23March 1973 Engineering G~logy - Mmmg · Geophysms. Groundwats~ = Petroleum Messrs. Ed Y~oung and Paul JohnSon Box 4-1202 Anchorage, Alaska 99503 Re: Soils and Foundation Investtgation of the American Legion Bmlding S~te (Lot 3, Block 1) and Surrounding Area tn the Johnson-Young Subdlv~swn Gentlemen: This letter report presents the results of a softs and foundation mvest~- garcon of the proposed s~te for construction of the American Legion Bufldmg w~th~n the Johnson-Young Subd~ws~on. As you requested, we drilled 3 test bormgs at the proposed bmldmg s~te on Lot 3, Block 1 for purposes of definmg foundation cond~twns and also to determine percolatwn quaht~es of the soil for on-s~te selvage d~sposal. Also as requested, test bormgs were drilled on Tract A and on Lot 6, Block 1 to prowde softs data as a general guide to future development. Locations of the test bormgs are shown on the enclosed drawmg along with the bor~ng logs. FIELD INVESTIGATION Subsurface data for th~s mvestigat~on were obtained by means of 6 test borings drilled with a Go-Tract mounted B-40 Mobile drill. Bormgs 1 and 2 were located to provide foundation softs data for the proposed Amerman Legion Bufldtn~. Boring 3 was drilled in the area proposed for on-s~te sewage d~sposal facilities. Bormgs 4, 5 and 6 were located to prowde a general v~ew of subsurface soil condi- tions of the 31-acre subd~wswn as an a~d to future planmng and development. Messrs. Ed Young an~aul Johnson 23 March 1973 Page 2 SUBSURFACE CONDITIONS - BUILDING SITE and depths ~/sotls encountered in the borings are shown on Specific types very competent foundatton ~[1 consisting of dense pebbly sand. The water table upon completion of the boring was at 7 feet. At the northwest corner of the building the subsurface smls, as defined by Boring No. 2, were stmkingly different. At thru location the upper 6. 5 feet of so~l consisted of silt wtth scattered pebbles and a minor amount of organics. It ~s believed that at least five feet of th~s material ~s fall. From 6. 5 to 10 feet the soil conmsted o~ a wet, shghtly clayey silty sand with scattered pebbles. Below 10 feet to a depth of 15~the smls are comprised of very dense gravelly sandy silt. The standtng water level was measured at 6. 5 feet at the completmn of drtlhng. SEWAGE DISPOSAL AREA Boring No. 3, located m the area proposed for a sewage seepage p~t, encoun- tered sandy material to the bottom of the boring (13 feet~. The material is classified according to the umfted sod classffmation system as SP (poorly graded sands) and SM (stky sands). Stdewall seepage area reqmred for materml of this type is 200 square feet per bedroom. The water table at th~s locatton was measured at 7. 8 feet upon completion of the test boring. SU[kSURFACE SOILS tN LOT 6 AND TRACT A Subsurface soils in Lot 6, as determined by Bormg No. 4, consist of 5. 5 feet of hll con, posed of peat mtxed with a minor amount of sand. At 5.5 feet the original Messrs. Ed Young and ohnson ~ 23 March 1973 Page 3 ground surface consists of moss and organics approxtmately 6 inches thick. From the 6 foot depth to a depth of 15 f~et the mater~al consists of dense gravelly sandy / s~lt, w~th sandy lenses wh~h~y~eld water freely. The ~vater level stood at the 6 foot depth upon completion of the test drdhng. Boring 5~ located in the~ortheast portion of Tract A, encountered very dense glacial t~ll comprised of gravelly to pebbly s~lt. Th~s so~l was mantled by a one-foot layer of peat. No water was noted in th~s boring. Boring 6 m the east-central port~on of Tract A encountered 9 feet of loose wet peat soils underlain by dense pebbly sandy sik. The upper 5 feet of peat appeared to be fall. Standing water ~n the test hole was measured at 8 feet. CONCLUSIONS AND RECOMMENDATIONS On the basis of ~nformation developed ~n our investigation, we conclude that the proposed structure can be constructed on Lot 3, Block 1 providing that the site is properly prepared for foundations. We recommend that the budding site be exca- vated to a depth of seven feet to remove the orgamc and loose salty sods. The excavation should then be backfdled ~wth non-frost-susceptible gravel. The g-ravel should be placed m 9-inch hfts and compacted to 95% of standard AASHO density before the addition of each succeeding hft. Footings can be cast against the compacted fall. We recommend a footing depth of not less than 4. 5 feet. The compacted f~ll can be expected to support design loads of 4000 pounds per square foot with the usual minor settlements xvhich can be tolerated. %Ve anticipate that pumping may be required to permit compaction of the hrst 1 or 2 hfts of gravel m the excavation. The pumping can be accomplished from open sumps. Messrs. Ed Youn_g.and~F~ ~- -,,- Johnson ~ 23 March 1973 Page 4 We recommend that the Borough Department of Environmental Quahty be consulted to determLue sewage disposal requirements at the site. The sods require a seepage area of 200 square feet per bedroom. The presence of the water: table at 8 feet will reqmre special design consideration. In view of the general d}sturbed condition of the entire subdivision, w~th extensive areas filled with peaty soils, we recommend a careful soils ~nvest~gation be made pr~o~: to any proposed construction. We conclude however that the sub- division can be readily developed by excavating the peat soils on structure locations followed by placement of an engineered gravel £dl. The soils below the peat and fill are competent foundation materials. As a general rule, basements should not be conmdered because of the ground water problem. Seasonal frost at the time of our invest~gatmn had generally penetrated to the 3 foot depth. F~nall¥, we recommend that we be notified at the time the excavation ~s completed for the American Legion Budding so that we may inspect the exposed sods to insure that foundation conditions are as we anticipated from our exploration program. HJM.d Respectfully submitted, ALASKA GEOLOGICAL CONSULTANTS Harold J. Moemng",,~ "' ~ ~H~D ~Y DATE DATE ~U~JECT SHEET NO JOB NO. ~ OF 12-; 15-- LOGS ~Gravet [~ Standard Penetration Test - Blows / Foot Sedrock ~ Alaska Geolog,cal Consultants Anchorage Alaska Dote' 3-22-7~ JWO No .... Huff, P.E. Coqtractlng E~lg'~neers & AssociaCes StanCon Aw:hue lc,lorage, qlasLa }]5~4 Watmr and Sewer Plans for Jonnso.-Young Sd,,~dlVlbiO~ ~.ar ,~r. Huff. Tam Creater Anc,lorage i~rea BorouQn ~cuaru.~nt of LlnVirOq..~4tLal ,~Ua]lty ,~as received anJ ~viewem Che pr~lim'lnal~ 6~gln~Jerlq<~ ~,lans for t.e ~u~jecL project. We find c~)at Lnesc pla,~s )~LC Should you qave any UJesClo~ls reqardlnq our r. vlt,~,~ of t,,eNe ~,I~S, I~l~as~ conCacC ~.te d)')derSl~jt)e~. S i qc~re ly ~ t<ott Stricktar~u, ,~.S. C(l) ef Sa;)l Carl an "TRACT B" ' T=555.~7 'N of BLOCK MEADOW STREET N. 0° 04' 04"W t2 ZO.16 SUBDIVIDED REDWOOD St. 111 ) /~ N 0v O41 04 W{- 1,320 14meos [~ 5' IJTLITY - ~ ~ - ~ 46.50 66~ 68.50 66.50 66~; 6650 6650 66~ 6650 6650 ; ~52 6259 I ~ ¢ UTILIT' EASEMEN % ~ Ii ~5' U4 [LITY~ , 80-34 : .;. DRIVE VIBURNUM