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HomeMy WebLinkAboutSOUTHPARK Blocks 1-5 S-5077 DEPARTMENT OF HEALTH AND ENVIRONMENTAl. PROTECTION PLATTING OR PLANNING AND ZONING CASE REVIEW CASE NUMBE~ PETITION FOR REZONING SPECIAL EXCEPTION ,:,ATE RECE,VED--~C"~"'!V"'S~"- 7 COMMENT TO PLANNING BY$,,e..~ FOR MEETING OF COMMENTS: of Cases ENVIRONMENTAL SANITATION: PUBLIC WATEB"I~cF AVAILABLE PUBLIC SEWER NOT AVAIl. ABLE TO SERVICE pET..&TION AREA, ' (~ ~ ENVIRONMENTAL ENGINEERING: 71-014 (9/76) Mr. David A. Gren:Ler Tryck, Nyman and ltayes 336 Donali Slfeot MacKay Bldg,, Room 1206 Anchorage, Alaska 99501 (907) 274.5527 P,O, Box 1207 Soldolna, Alaska 99669 (907) 262.52.10 P.O. Box 1064 Wasilla. Alaska 99687 (907) 376.5038 740 I Street .......... ~chorage, Alaska 99501 ~"~7'K '*~l' Subject: Infiltration G~llery on Little Rabbit Creek .... g Dear OrenLe~: ~ am ~n8 ~a ~esponse ~o you~ Ap~Z ~4~ ~980 ~e~te~ which ~eques~ed cenceptua~ app~ova~ fo~ an ~nf~t~at~on ~a~e~y to be ZoeaCed nea~ Rabb~t Creek to serve a proposed subd~a~on. A f~eZd ~spaet~o~ o~ creek Zn ~be v~c~nZ~y of Bay V~e~ D~ve and a tev~e~ of the L~m~ad chemical and bac~erJolo~ca~ analyses of ~he creek wate~ subm~ed by you~ Ap~L ~4~ ~980 Ze~er ~nd~ca~es tha~ ~he proposa~ could be aecep~abl.e to th~$ department. Any f~na~ approvals ~Li~ be made on ~he baals of engineered p~ana and spec~- fiea~ona as no~ma].~y aubm~l:ed ~o ~h~a a~eney fo~ re~ie~ and approvaL. Th~s proposed syste~ ~ be a cZass A surface supply as de~ned under ~8 ~C 80. Subskant~aZ a~d con~noua mo~tor~n~'~a requited under this re- 8u~ation due to ~he nature of a s~faca supply. Th~s w~ZZ be doubly ~mportan~ due te khe ~aek of p~o~ee~on ~ the ~n the future ~ ~1 become necessary ~ my open,on to p~ov~de comp~eke ~rea~ment of the ~a~e~ and e~e~tua~y p~ace the aubd~v~s~o~ on some ~o~m public wa~er syppZy which u~zes a mo~e p~otee~ed source. Th~s ~Z be due ~o ~he deveZopmen~ ~ha~ ~akes p~aee J.n Lhe future. 2okent~a~ 1. o~ should be advised o~ tb~s possibility. Zf ~ ~s dec~ded ~o proceed ~th ~h~a projec~ p~ease furnish us ~th a bacter- ~oLoS[ca~ analyses every ~wo ~eeks to buZ~d up a da~a base to judge ~he des~8~. Also several o~L and 8tease de~e~m~nat'lous ~ou~d aZso be heZpfu~ . especially after significant r:i,fall.' " Sincerely, L/ / ~/ Resional Eavironmental SDJ~isor~ ./~[lkt]~(~W 4040"B" STREET ANCHORAGE, ALASKA 99503 (907) 278-1551 BC & E/J&S c/o John Berggren, Bounty Development Si~ Box 4'?0~-B Anchorage, Alaska 9950'1 September 17, 1979 W,O. t!A18753 Grid ~3236 Subject: Addendum No. 2 to Subsurface Investigation 40 Acre Parcel on Old Seward Highway Gentlemen: On Septex~er 12, 1979 Jordan Jacobsen, geotechnical engineer, conducted an on-site wsstewater disposal system evaluation of spec]_z.kc test plts of '[:he property as designated by~Joh~:.~ .>.~v.Ps~L[g~g-r~en of Bounty Development. The test pits selected were 2/2~<6~.'7,/ 1.4, 15, and 22. (See Figure 2.) To evaluate the percolation rates of the soils in the test pit areas we planned on flooding 'the pits with water on September 12 and then conducting a perco.].ation test the fo].lowing day. However, upon examining 'the test pits it was discovered riley had sloughed in with a couple of feet of soil. The sloughed soil wa..=. J.dent'ical to the soil underlying it as confirmed, by the test pit logs. (See original soils report on this area.) Flooding of the test pits was still undertaken. Observation of the test pits' so~.l while being ~lcoded with water (up to i00 gallons) indicates that '~:he percolation ra~.e$ of the soils tested was between one and f~ve ~s-~ per ~ :~.n every no.~.e. These fast percolation rates negated the ]teed to conduct 'the standard test the fcllowing day. Based upon the observatJ, on off the test pits that were exantined the estimated percolation rates are representative values of the percolation properties J.r~ the test pit areas. The figure in Addendtnl] No. I, denoting percolation rates of specific areas, is substantiated by the observations made in this investigation. It should s~ill be used as a criteria for estimated percolation rates in specific areas of .this acreage. BC & E/J&B September 17, 1979 Page Two We trust the above meets your present requirements. If we can be of further assistance in this matter, do not hesitate to contact Very sincerely~ ALASKA TESTLAB Jordan E. Jacobse~ Geotechnical Engineer Approved by: JEJ/ms ames R. Finle~ .~. , Geotechnical Engineer t'.3d ..® /@ ® ./ / / .. . ~ .OBSERVED TEST IIOLE'LOCATIONS EXCAVATED ON A 40 ACRE TRACT for BC&E/J&B PERCOLATION TESTpITS. FIGURE 2 g 8 ~ 8 /'~"~ '~ /:~ - 'ih\, x~/ %>k' W.O. #A18753 c/o John Berggren S~ Box 470-B ~507 Anchorage, AK ~ . Subject. Subsurface Znvestigation on Transmihted h~e~'~a~e the~results of the subject investiga- tion. Included with this transmittal are the following: Vicinity Map Figure 1 Test Bole Location Sketch Figure 2 Map of Generalized Soil Types Figure 3 Test Bole Logs Table A Standard Explanatory Information Sheets 1-3 Grain Size Distribution Curv~ ~heets 4-'611 ~ ..J..~l I Based on the percolation tests, we believe soil groups A, B, and C will be suitable for on-site wastewater disposal systems. Sites where Group D is predominant should be carefully evaluated on an individual basis for app[Licability of individual wastewater treatment systems. Groups A, B, and C are generally suitable as borrow material where specifications require-the use of non- frost susceptible fill. The investigation consisted of 34 test pits, 'three augered test holes, and three percolation tests. The first 18 test 'pits were excavated using a backhoe and logged by the client. Visual soil classifications of the first 18 test hole logs were later verified by Mr. James D. Mack of Alaska Testlab. Test holes ~19 to #34 were excavated with a backhoe and logged by James D. Mack. Test holes ~35 through #37 were drilled using a Nod%~ell mounted Mobile Drill B-50 rig equipped with a solid flight auger. BC&E/J&B January 23, Page 2 1979 For evaluation of the soils encountered, samples of soil from the various test holes were visually classified in the field, then sealed in plastic bags to protect the natural moisture content. In the laboratory, 'the natural moisture content and dry strength of each sample was de'te~nined. Samples of similar color,-texture and particle size distribu- tion were then grouped together and given an arbitrary group designation. Grain size analysis was then performed on composite samples on important groups rather than on individual samples. ~roup A is a brown Grave].. This group is non-frost sus- ceptible, rated NFS. Unified classification is GP. ~rgup ~ is a brown slightly ~ilt~ Gravellj[ Sand. This group is non-frost susceptible, rated NFS. However, the composite sample borders on marginally frost susceptible F.-2 gradation. Unified classification is SP-SM. Grain size distribution is shown on Sheet 4. ~rou~.~ is a brown Sandy ~ravel. This group is non-.frost susceptible, NFS, to marginally frost susceptible, F-1. Unified classification is GW. In the field, Group C is expected to be primarily non-frost susceptible. The laboratory sample contained particles only up to 2" in size while in the field, Group C soils typically contained particles up through cobbles size. Grain size distribution is shown on Sheet 5. Group D is a grey Grave!l_)Iy ~ndy Silt. This group is highly frost susceptible, rated F-4. Unified classification is b~. Grain size distribution shown on Sheet 6. is The grain size distribution curves do not reflect stratifica- tion which causes the soils to be more or ].ess sorted in the field. As mentioned above, samples typically omit the larger particle sizes, thus, particular attention should be paid to the test hole logs where cobbles or boulders are mentioned. For a preliminary evaluation of the site for suitability of on-site sewage treatment systems, test holes ~135 through ~37 were drilled with a solid flight auger rather than excavated with a backhoe. Upon completion of drilling, a 3/4" slotted PVC pipe was inserted in the hole to aid in measuring the free water level. The holes were selected in locations representative of the various soil types encountered[ on the project. The hole was then filled with water and left Bc&E/J&B January 23, Page 3 1979 overnight to saturated. Upon returning the next day, the hole was refilled with water and the drop in water level carefully monitored over the next 60 minutes. Using the above procedure, the following minimum percolation rates were observed. Test tlole # Percolation Rate 35 36 37 3 minutes/inch 8 minutes/inch 27 minutes/inch We trust tile above meets your present requirements. If you have any questions or if we ]nay be of further assistance, please do not hesitate to contact us. Very sincerely, ALASKA TESTLAB R. Mark Hansen RMH:rb Enclosures APPROVED Melvin. R. Nichols, P.E. Laboratory Manager ,.~ .=, . I~r' ~ ' Head Office '740 I Street Aritho*age, Ah~ska 99501 .'907 279 0543 'Cable TNt4ANCAK,/To{ex 090 25332 FIYEI< NYMAN 8i71.0 February 13, 1979 Department of Health & Environmental Municipality of Anchorage 825 L Street Anchorage, Alaska 99501 Protection Attention Mr, John W, Lynn Subject: Dear John Additional Informatioa Regarding · ~. '-., 8ounty Terrace Subdivision Case No.[ 5077 Attached please find a preliminary plat of Bounty Terrace which shows topographic information along with proposed well site locations. Also attached is a copy of the sub-surface soil investigation reports dated January 23, 1979 and Addendum No. I dated January 26. A community well is proposed for this site along with on-site individual sewer systems. The actual location of the well will depend upon where a successful drillin9 attempt is made. VChen the well drillin9 is completed, its location will be verified in the field by surve¥eB~thods and shown on the plat. The lot configuration will then be fina~!ized so that buildin9 sites and septic systems will be outside the re'~uired 200' radius. In layin9 out the final plat design all applicable 9uidelines of the Municipal Health and Environmental Protection A9ency regardin9 on-'site septic systems and their relation to lot size and soil type will be followed, We will resubmit the plat to your department which will shown the actual location of the welt and final lot layout for your approval, If you have any questions or desire additional time please contact this office. Very truly yours, '~[/' informat i on'at th i s cc: John Berggren ,~ii:i!i?~ A NCH O RAG E, A LAS KA 99503 ~~ (907) 278-1551 ~anua~Z 23, 1979 W.O. ~A18753 . Grid ~3236 - ' ' ~ ~NV RONMEN~' - FEB 7 ~/0 John Berggren ~cbozage, AK 9950? .. Subject: Subsurface Investigation 40-Acre Parcel on Old Seward Highway Gentlemen: Transmitted herein are the results of the subject investiga- tion. Included with this transmittal are the following: vicinity Map Figure 1 Test Hole Location Sketch Figure 2 Map of Generalized Soil Types Figure 3 Test Hole Logs Table A Standard Explanatory Info~ation Sheets 1-3 Grain Size Distribution Curves Sheets 4-6 CONCLUSIONS 1. Based on the percolation tests, we believe soil groups A, B, and C will be suitable for on-site wastewater disposal systems. 2. Sites where Group D. is predominant should be careful].y evaluated on an individual basis for applicability of individual wastewater treatment systems. 3. Groups A, B, and C are generally suitable as borrow material where specifications require the use of non- fros~ susceptible fill. The investigation consisted of 34 %est pits, three augered test holes, and three percolation tests. The first 18 test pits were excavated using a backhoe and logged by the client. Visual soil classifica~ons of %he first 18 test hole logs were later verified by Mr. James D. Mack of Alaska Testlab. Test holes ~19 to ~34 were excavated with a backhoe and logged by James D. Mack. Test holes ~35 through ~37 were drilled using a ~;odwell mounted Mobile Drill B-50 rig equipped with a solid flight auger. BC&E/J&B January 23, Page 2 1979 For evaluation of the soils encountered, samples of soil from the various test holes were visually classified in the field, then sealed in plastic bags to protect the natural moisture content. In the laboratory, the natural moisture content and dry strength of each sample was determined. Samples of similar color, texture and particle size distribu- tion were then grouped ~together and given an arbitrary group designation. Grain size analysis was then performed on composite samples on ~portant groups rather than on individual samples. Group A is a brown Gravel. This group is non-frost sus- ceptible, rated NFS. Unified classification is GP. Group B is a brown slightly S__ilt~ Gravellz Sand. This group is non-frost susceptible, rated NFS. However, the composite sample borders on marginally frost susceptible F-2 gradation. Unified classification is SP-SM. Grain size distribution is shown on Sheet 4. Group C is a brown San~ ~ravel. This group is non-frost susceptible, NFS, to marginally frost susceptible, F'l. Unified classification is GW. In the field, Group C is expected to be primarily non-frost susceptible. The laboratory sample contained particles only up to 2" in size while in the field, Group C soils typically contained particles up through cobbles size. Grain size distribution is shown on Sheet 5. Group D is a grey Gravellff_ ~gndy Silt. This group is highly frost susceptible, rated F-4. Unified classification is ML. Grain size distribution shown on Sheet' 6. is The grain size distribution curves do not reflect stratifica- tion which causes the soils to be more or less sorted in the field. As mentioned above, samples typically omit the larger particle sizes, thus, particular attention should be paid to the test hole logs where cobbles or boulders are mentioned. For a preliminary evaluation of the site for suitability of on-site sewage 'treatment systems, test holes #35 through ~37 were drilled with a solid flight auger rather than excavated with a backhoe. Upon completion of drilling, a 3/4" slotted PVC pipe was inserted in the hole to aid in measuring the free water level. The holes were selected in locations representative of the various soil types encountered on the project. The hole was then filled with water and left Bc&E/J&B Jan6ary 23, Page 3 1979 overnight to saturated. Upon returning the next day, the hole was refilled with water and the drop in water level carefully monitored over the next 60 minutes. Using the above procedure, the following minimum percolation rates were observed. Test Hole # Percolation Rate 35 36 37 3 minutes/inch 8 minutes/inch 27 minutes/inch We trust the above meets your present requirements. If you have any questions or if we may be of further assistance, please do not hesitate to contact us. Very sincerely, ALASKA TESTiJ~B R. Mark Hansen RMH:rb Enclosures APPROVED Melvin R. Nichols~ P.E. Laboratory Manager "T~I 5 34 \/ ® / I~ / /lk\ ® \ \ \ \ TEST HOLE L0~AxION~ EXCAVATED ON A 40 ACRE TRACT for BC&E/J&B FIGURE 2 1 MAP IDENTIDYIN~ A=-RO-~I~.A5 BOUNDARIES OF SOIL TYPES FOUND ON A 40 ,ACIIE TRACT ~'OR BC&E/J&B Descrij?tion of Map. Units 1 Well-drained gravels and sands 2 Slower draining gravelly sandy silts 3 Wetter areas consisting of valleys and sloughs FIGURE 3 Test Hole #1 D_~pth in Feet From To 0.0' - 1.5' 1.5' - 3.5' 3.5' - 6.5' 6.5' - 8.0' Bottom of Test Hole: Frost Line: Free Water Level: Remarks: Table A WO #A18753 Logged By: Clienh Date: 10-28-78 Soil Description Organic Topsoil. Silty Sandy Gravel, moist, GM - F-l. ~ilty Gravelly'Sand, moist, SM~- F-2, occasional cobbles. Sandy Gravelly Silt, SM/ML~ F-4, damp. 8.0I None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole #2 D_~j~th in Feet From To 0.0' 0.5' 0.5' 6.0' 6.0' 8.0' 8o0' 12.0' Table A WO #A18753 Logged By: Client Date: 10-28~-78 Soil Description Organic Topsoil2 Coarse Sandy Gravels, GP -NFS, damp. Coarse Sand with thin Silt layers,-~SP/SM:- NFS/F-2, damp. Coarse Sand with layers of pea gravel, SP,'%~ NFS, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 12.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole ~3 ~De~th in Feet From 0o0' 8.0' Table A WO #A18753 Logged By: Client Date: 10-28-78 Soil Description ~ea[, wet. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 8.0f None Observed N6ne Observed Hole filled{ with water and snow when observed by Alaska Testlab. Test Hole #4 Depth in Feet From To 0.0' - 1.0' 1.0' - 3.0' 3.0' - 8.0' Table A WO #A18753 Logged By: Client Date: 10-28-78 Soil Description Organic Topsoil. Silt~ Sandy Gravel, GM - F-l, damp. Fine Gravelly Silt~ Sands, SM-- F-2/F-3, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 8.07 None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole D~th in Feet From To 0.0 - 0.5 0.5 .- 2.5 2.5 - 8.0 8.0 .- 12.0' Bottom of Test Hole: Frost Line: Free Water Level: Remarks: Table A WO #A18753 Logged By: Client Date: 10--28--78 Soil Description Organic Mat. Silty ~nd~ Gravel with slight organic content F-~ - GM, damp. pilt~ Sandy Gravels, GM~- F-l, damp. Coarse 9ravelly Sands, SP[.- NFS, damp. 12.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole #6 D__e~th in Feet From To 0,0' - 1.0' 1.0' -- 2.0' 2.0' - 12.0' Table A WO ITA18753 Logged By: Client Date: 10-28-78 Soil Description Organic Topsoil. Organic Silty Sandy Gravel, GMs.- F-l, damp. ~andy Gravels, GP, NFS, damp, 60% plus #4 aggregate, cobbles to 8 inches. Bottom of Test Hole: Fros% Line: Free Water Level: Remarks: None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole ~7 D__qepth in Feet From To 0.0' - 1.0' 1.0' -- 12.0' ~ottom of Test Hole: Frost Line: Free Water Level: Remarks: Table A WO #A18753 Logged By: Client Date.: 10-28-78 Soil Description Organic Topsoil. Sandy Gravels, GP.;~ NFS, damp, ~r~-f~nch-~s7 ~'-70% plus #4 agg. 12.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab cobbles to Test Hole #8 Depth in Feet From To 0.0' - 2.0' 2.0' - 4.0' o0' - 7~0' Bottom of Test Hole: Frost Line: Free Water Level: Remarks: Table A WO #A18753 Logged By: Client Date~ 10-28-78 Soil Description Organic Topsoil Silt, ML, wet. Coarse Gravels, GP ;1' NFS. 7.0' None Observed Test Hole Logged By Client Bole full of snow when observed Alaska Testlab by Test Hole #9 Depth in Feet From To 0.0' 1.5' 1.5' 2.5' 2.5' 10.0' Table A W0 #A18753 Logged By: Client Date: 10-28-78 Soil Description Organic Topsoil. Coarse Sandy Gravels, GP~NFS, Silty Gravelly Sands., SM,~F-2, damp. d amp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 10.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole #10 D_~th in Feet From To 0.0' 0.5' 0.5' 1.5' 1~5' 3.0' '3.0' 12.0' Table A WO #A18753 · Logged By: Client Date: 10-28-78 Soil Description Organic Topsoil. Si~t~ Sandy Gravel, ~, F-l, damp. Gravejj_~ Sands, SP~I~NFS, damp. Layered Sandy Gravels and Gravelly Sands, GP/SP~I.-NFS, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 12.0' None Observed None Observed Test Hole Logged By Client Verified bY Alaska Testlab ~est Hole #11 Depth in Feet From To 0.0' - 3.5' 3.5' - 6.0' Table A WO #A18753 'Logged By: Client Date: 10-28-78 Soil Description Peat with boulders. ~and~ Gravels with cobbles, GM~- F-l, to 5 feet then saturated at 6 feet. d~np Bottom of Test Hole: ~.0' Frost Line: None Observed '<'Free ' Water Level: 6.0' [~ Remarks: Test Hole Logged By Client Verified by Alaska Testlab Test Hole #12 D~pth in Feet From To 0.0' - 1.0' 1.0' 5.0' 5.0' 5.5' 5.5' 14.0' Table A WO #A18753 Logged By: Client Date~ 10-28-78 'Soil Description Orc~anic Topsoil. Layered coarse Gravels and Gravelly Sands, GP/SP, damp. Silt, SM, damp. Coarse Sandy Gravels, GP,.{~NFS, damp, with cobbles. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 14.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Sample Depth 1 4.0' 2 8.0' Type of Dry M% Sample Strength Group Unified 1.4 G None A GP 6.2 G None B SP/SM Remarks: 2. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medimn, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #13 Depth in Feet From To 0.0' - 0.5' 0.5' - 2.5' 2.5' - 8.0' '8.0' - 10.0' 10.0' - 14.0' Table A WO #A18753 Logged By: Client Date: 10-28--78 Soil Description Organic Topsoil. Coarse Gravels, GP, NFS, damp. Sa__nd~ Gravels, GP/GW~%'-NFS, damp. ~and, SP/SI4,rI-NFS, damp. Sandy ~ravels with cobbles, GP/GW;I.NFS, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 14.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Sample Depth M__% 1 9.0' 6.6 Type of Dry Sample ~trength Group Unified G None B SP/SM Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, ti=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Texfural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #14 Depth in Feet From To 0o0' - 0.5' 0.5' - 12.0' Table A WO #A18753 Logged By: Client Date: 10-28-78 & 1-9-79 ~ Soil Description Topsoil. C~arse Sandy Gravels with cobbles to 8", GW/GP/~-N-~,-damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 12.0' None Observed None Observed Test Hole Logged By Client and Redug and Verified by Alaska Testlab Sample pepth M__% 1 2.0'-12.0' 6.7 Type of Dry Sample Strength Group Unified G None C GW Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undis.turbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #15 D_sjo~th in Feet From To Do0' - 1.5' 1 .!5' - 3.0' 3.0' - 12.0' Bottom of Test Hole: Frost Line: Fz'ee Water Level: R~arks: Table A Soll Description WO IIA18753 Logged By: Client Date: 10-.28-78 Organic Topsoil. Coarse Gravels, GP, NFS, damp. Coarse Sandy Gravels with cobbles, NFS, damp~ 12.0' None Observed None Observe,d Test Hole Logged By Client Verified by Alaska Testlab GP/GW,'~. Sam~l__e Depth ~J~ 1 10.0' 4.2 Type of Dry Sample Strength Group Unified G None C GW Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group ref.ers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #16 _D_epth in Feet From TO 0.0' - 1.5' 1.5' - 8.0' 8.0' - 9.0' 9.0' - 12.0' Table A WO #A18753 Logged By: Client Date: 10-.28-78 Soil Description Organic Topsoil. Sandy Grave]_, GP/GW, NFS, damp, ~gvelly. Sand, SP,'['NFS, damp. Sandy Gravel, GP/GW~.NFS, damp, with cobbles. with cobbles. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 12.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Sample Depth I 9.0' Type of Dry M__% Sample Strength ~r__oup Unified 2.8 G None C GW R~]arks: 2. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #17 Depth in Feet From To 0.0' -- 0.5' 0.5' - 5.5' .5.5' - 10.0' Table A WO #A18753 Logged By: Client Date: 10-28-78 Soil Description Topsoil. Coarse Gravels with cobbles, up to 8 inches, GP, NFS, damp. Gravelly Sandy Silt, SM/ML;'~F-4, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 10.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Sample Depth 1 8.0' 11.0 Type of Dry ~ample Strength Group Unified G None D PLL Remarks: 2. 3. 4. 5. 6~ Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medi~u,.H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole Depth in Feet From To 0.0' - 1.5' 1.5' - 6.0' Table A WO #A18753 Logged By: Client Date: 10-28-78 Soil Description Organic Topsoil. Gravell~ ~andy Silt, SM/ML;~'F-4, damp. Bottom of Test Hole: Frost Line: Free Water Level: Rennarks: 6.0~ None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole #19 D~th in Feet From To 0.0' - 1 .5' 1 .5' - 8.5' 8.5' - 13.0' Table A WO #A18753 Logged By: Client & ATL Date: 10-28-78 & 1-9-79 Soil Description Organic Topsoil. Coarse Sandy Gravels, GP;{-NFS, Gravelly Sand, SP/('NFS, damp. damp. Bottom of Test Hole: Frost Line: Free Waker Level: Remarks: 13.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole #20 Depth in Feet From To 0.0' .- 1.0' 1.0' 12.0' Table A WO #A18753 Logged By: J.Do Mack Date: 1-10-79 Soil Description Topsoil. ~ravell~ Silt~ ~ands, SM/ML,~'F-2/F-4, damp, cobbles to 12 inches. Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed _Sample Depth M_~%_ 1 6.0'- 8.0' 12.3 Type of Dry ~ample ~tren~t~ Group Unified G None R~arks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet '2. Unified Classification, s~e Sheet 3. Test Hole _De_jo~th in Feet From To 0.0' - 2.0' 2.0' - 8.0' 8.0' 12.0' Table A WO ~A18753 ]bogged By: J.D. Mack Date: 1-9-79 Soil Description Topsoil. Sandy Gravel with cobbles to 8 inches, NFS/F-l, damp. Gravelly Silt, ML~F-4i damp. GW, Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed ~amp].e _Depth M_~% 1 2.0'- 8.0' 5.4 2 8.0'-12.0' 12.2 Type of Dry Sample Strength ~rou~ Unified G None C GW G Slight D ML Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Orab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group tel%rs to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #22 D_~th in Feet From To 0.0' - I .0' 1.0' - 12.0' Table A WO I~A18753 Logged By: J.D. Date: 1-9-79 Soil Description Top~oil. Layered Sandy Gravels (GW)>[-and Gravelly Sands (S~ ~a~i~.-~'~ggregate si~7. Mack Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed Type Of Dry Sample Depth M_~% S__agplq Strength Group Unified I 2.0'-12.0' 4.0 G None C Remarks: 1. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. 2. Dry Strength, N=None, L~Low, M=Medium, H=High. 3. Group refers to similar material, this study only. 4. General Information, see Sheet 1. 5. Frost and Textural Classification, see Sheet 2. 6. Unified Classification., see Sheet 3. Test Hole #23 Depth in Feet From To 0.0' - 1.5' 1.5' - 12.0' Table A WO #A18753 Logged By: J.D. Mack Date: 1-9-79 Soil Description Topsoil. Gravelly Silt, ~-4, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 12.0' None Observed None Observed Small water seepage at 4~ to 4.5' below ground surface Test Hole #23A D__epth in Feet From To 0.0' 2.0' 2.0' 8.0' 8.0' 10.0' Table A WO #A18753 Logged By: J.D. Mack Date: 1-9-79 Soil Description Topsoil. Coarse Sandy Gravels, Silt, ML~ ~F-4, damp. GP;~-NFS, wet. Bottom of Test Hole: Frost Line: Free Water Level: ReMarks: 10.0' None Observed 7.0'-8.0' only ~ Test Hole 23A, 80' uphill from test hole ~23, water seepage at Test Hole #24 Depth in Feet From To 0.0' 1.5' 1 .5' 3.5' 3.5' 5.0' 5.0' 8.0' Table A WO IIA18753 Logged By: J.D. Mack Date: 1-11-79 Soil Description Organic Topsoil. ~andy Gravel, GP, NT'S, damp. Gravelly ~ilty Sand, wet, SM, F-2. Dense-dry Gravelly Sandy Silt, ML;~"F-4. Bohtom of Test Hole: Frost Line: Free Water Level: Remarks: _Sample Depth I 7.0' 8.0~ None Observed None Observed Water seepage at -3.5' t./ Type of Dry M% Sample ~trength Group Unified G Slight D ML Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified, Classification, see Sheet 3. Test Hole 25 D~th in Feet From To Table A Soil Description WO ~tA18753 Logged By: J.D. Mack Date: 1-11-79 0.0' - 1.5' Organic Topsoil. 1~5' 2.5' Sand, SP, NFS, wet. 2.5' 10.0' Gravelly ~ Silt, ML~-F-4, damp, dense. Bottom of Test Hole: 10.0' Frost Line: None Obseryed Free Water Level: ( .... 2.0' tO 2.~¢ Remarks: Water"seepage between 2.0' and 2.5' Test Hole #26 Depth in Feet From To 0.0' '- 2o0' 2.0' - 10.0' Table A WO #A18753 Logged By: J.D. Mack Date: 1-9-79 Soil Description Organics mi_xed with cobbles. Gravelly Sandy Silt, ML~'F-4, ~-~com-i~g- ~et at -8.0' damp, Bottom of Test Hole: Frost Line: Free Water Level: 10.0' None Observed None Observed Sample pepth M__% 1 6.0'- 8.0' 11.7 Type of Dry Sample ~trength G__roup Unified G Slight D ML''~ Remarks: 2. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group re[ers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #28 D__qpth in Feet From To 0.0' 1.5' 1.5' - 12.0' Table A WO #A18753 Logged By: J.D. Mack Date: 1-9-79 'Soil Description Top~oil. Coarse Sandy Gravels with boulders and cobbles throughout depth, GW/GP, NFS, damp. Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed Sample Depth M% I 5.0'-10.0' 4.8 T~pe of Dry S~aple Strength Group Unified G None C GW,[' Remarks: 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medi~n, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet .2. Unified Classification, see Sheet 3. Test Hole #29 Depth in Feet From To 0.0' - 2.0' 2.0' - 12.0' Table A WO #A18753 Logged By: J.D. Mack ]Date: 1-9-79 Soil Descr.%ption Topsoil. _Gravel_l_~ Sandy Silt, SM/Mn%~ F-4, Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed Sample De,th M_~% 1 5.0'-10.0' 12.0 Type of Dry Sample Strength Group Unified G Slight D ML '~ Remarks: 2. 3. 4. 5. 6. Type of Sample, G=Grab, SP := Standard Penetration, U = undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole ~30 _D_epth in Feet From To 0,0' - 1.0' 1.0' - 10.0' 10.0' - 12.0' Table A W0 #A18753 Logged By~ J.D. Mack ])ate: 1-11-79 Soil Description Tops~oil. Coarse Sandy Gravels with cobbles and occasional boulders, GP;/~ damp. Gravelly Sands with occasional cobbles, damp. Bottom of Test Hole: Frost Line: Free Waqer Level: 12.0' None Observed None Qbserved Ss~ple Depth I 8.0' Type of Dry M_~% ~ample Strength Group Unified 5.5 G None C GW '\- Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Info,nation, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #31 D_~th in Feet From To 0.0' - 2.0' 2.0' -- 4.0' 4.0' - 7.0' Table A WO #A18753 Logged By: J.D. Mack Date: 1-11.-79 Soil Description Orggnic Topsoil. ~andy Gravels, GW, NFS, damp. Dense, dry ~ravell¥ Silts, MLf'U-4. B~ttom of Test Hole: Frost Line: Free Water Level: 7.0' None Observed None Observed Test Ho]_e I~32 D~pth in Feet From To 0.'0' - 2.0' 2.0' - 4.0' 4..0' - 8.0' 8.0' - 12.0' Table A WO #A18753 Logged By: J.D. Mack Date: 1-10-79 Soil Description Organic Topsoil. ~andy Silts and ~ilt~ Sands, ML/SM, damp. Slightly ~ilty Sand, cobbles. Gravell~ Silty sands, F-4/F-2, SP/SM, NFS/F-2, occasional SH/SM?-!.-2, moist to wet. Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed ~ample Depth 1 5.0' 3 10.0' Type of Dry M_~% _Sample Strength Group Unified 4.4 G None B SP/.~M ~[ 9.2 G None B SP/SM / Remarks: 1. 3. 4. 5. 6. Type of Sqmple, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole ~33 pep.th in Feet From To 0.0' 2.0' 2.0' 4.0' 4.0' 12.0' Table A WO #A18753 Logged By: J.D. Mack Date: 1-9-79 Soil Description Organic Topsoil] Silty Sand, SM, F-2/F-4, G~avell~ Sands, SPT/-NFS, ~bbles t~ ]~. damp. occasional Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed Test Hole #34 Depth in Feet From To 0.0 0.5' 0.5 - 12.0' Table A WO #A18753 'Logged By: J.D. Mack Date: 1-10-79 Soil Description To~soil. Clean coarse Sand Gravels with clean Sand layers, cobbles to-12", GP/GW~-~FS, d~rap. Bottom of Test Hole: Frost Line: Free Water Level: 12.0' Nbne Observed None Observed Test Hole #36 D~th in Feet From To 0.0' - 6" 6" - 20.0' Table A WO #A18753 Logged By: T, Date: 1-16-79 Soll Description Orgqnic Topsoil. Gravelly Sand~ silt. Barber Bottom of Tes% Hole: F~ost Line: Free Water Level: Remarks: 20.0' None Observed Nohe Observed Percolation test hole in lower silt area. Sample Depth. 1 2.5' 2 5.0' 3 10.0' 4 15.0' 5 20.0' Type of Dry ~amp1q Strength Group Unified G D ML G D ML G D ML G D G D ML Re~]ar ks: I . 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General InformatiQn, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #37 Depth in Feet From To 0.0' - 1.0' 1.0' - 20.0' Table A WO ~A18753 Logged By: %. Date: 1-.17-79 Sctunidt 'Soil Description Or~anlc Topsoil· Gravelly Silty San~s/SandylSilts. Bottom of Test Hole: Frost Line: Free Wa%er Level: Remarks: 20.0' None Observed None Observed Percolation test hole in upper silt area. Sample I 10.0' 2 15.0' 3 20.0' Type of Dry M__%. S_~am_mj~,.1e Strength Group Unified G D SM/ML G D SM/ML-- G D SM/Mn~. Remarks: 1. 3. 5. 6. Type of'Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medi%~, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Togt Hole Log - Doscription Guide The logs often include the followblg items: Depth lnterva,I - usually shoxvn to 0.1 foot, within that zone no significant change in soil type ,vas observed through drill action, direct ob~rvation or sanlpling. Frost Classification - NFS, Fl, F2, F3, F4, see "Soil Classification Texture of Soil - An engineering classification of the soils by particle ~ize and pro:mellon, se.e "Soil Classification Chart", note the proportions are approximate and nmditications to tt~e soil group due to stratification, inclusions and changes in properties are included. _dr_)'_, no or little apparent surface moisture, damp, moisture forms portion of color, less than plastic limit. la~uratcd, free water may be squeezed out, ifa free drainblg sol',: sand, (Thc moisture content is further defined by reference to Pl. LW, NP, M% or dilatency,) Density - refers to more-or-less non.cohesive soils, such as sand gravel mixtures with or without a fine fraction~derived from drilling action and/or sample data: usually descrlbedas: very ioose, loose, medium dense, very dense. General intent is to portray earthwork characteristics. Stiffness - refers to more-or-less cohesive soils and fine grained silts of ~ clay-sih groups. Derived from driHactlonand/or sample data. Very soft, soft, stiff, very stiff and hard arc commonly used Ierms. Particle size - The hrgest particle recovered by JJle split' spoon is 1-3/8", Sbelby tube Y', auger tgghts (minute-man) 2", Auger flights (B-50 hollow stem) 6"-8". Larger particles are described indirectly by action of Ihe drilling and arc referred to as cobbles, 3" to 8", or boulders 8"+. Therefore when reviewing the gradation sheets, if any, the description on the hole log must be considered for an indication of larger particles. Unified Soil Classification - This is a two letter code, See Unified ~ass~'~ficatlon sheet fbS-~u3~her definition, In some cases AASHO and/or FAA soil classifications may be shown as well as the unifie~ PI+; natm'M moisture content believed to be between plastic and liquid '~unit~ Lw+; natural moisture content believed to be greater than liquid hmit NP; non-plastic, useful as a modifying description of some silty ~t~rials. silt or a volcanic ash, Rock flour -tinely ground soil that is not plastic but otherwise appears s~nitar to a clayey silt. Organic Content - usually described as Peat, PT, sometimes includes discrete par~[~ el~ such as wood, coal, etc. as a modifier to an inorganic soil. Quantity described as; trace, or an estimate of volume, or, in case of all organic, - as Peat. This may include tundra, muskeg and bog material, Muck - a modifier used to describe very soft, semi.organic deposits usually occuring below a peat deposit. Amorphus peat - organic particles nearly or fully disintegrated. Fibrous Peat .- organic particles more.ordess intact. Bottom ofTestboJe - includes last sample interval. ~rost Line - seasonal frost depth as described by drilling action aud'/or samples at the tittle of drilling. Frozen Ground - other than frost [in~, described by samples, usually includes description of ice content, often will include modified Unified Classification for frozen soils -- this is a special case related to permafrost st ffdies. Free Water Level - The free water level noted durmgdrilli'~g This is special cases. B{owl6' -- ]'lie number of blows of a 140 weigbt free falling 30" to by definition, the standard penetration. M% - natural moisture content of the soil sample, usually uot T.T~e of Sample - .~.~, refers to 2" split spoon driven blto the soil by 140 pound weighl, a dislurbed sample, ~ thin wall tube, "Shelby" used to obtain undisturbed samples of fine grained soil, Dr}' S~rer~ - a useful indicator of a soiPs clayey fraction, N=None, L=Low, M =Medium, H-"High Gro.u~ - The samples are placed into apparently similar groups based disturbed tests including Attcrberg Limits, grain size, moisture4ens,ty SOIL CLASSIFICATION CHART 30% GRAVEL OLAY OR SILTY SAND CLAYEY CLAYEY CLAYEY CLAYEY ,SILTY SILTY GRAVELLY SAND SANDY GRAVEL 0 10 GRAVELLY SAND 20 30 40 50 GRAVEl_ (-~-~4 SCREEN }Y GRAVEL / 60 70 80 % BY WEIGHT GRAVEL 90 100 NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS THAN 3% FINER TI-lAN 0.02 mm. GROUPS OF FROST-SUSCEPTIBLE SOILS: F1 GRAVELLY SOILS CONTAINING BETWEEN 3AND 20% FINER TNAN 0.02 mm. F2 SANDY SOILS CONTAINING BETWEEN 3AND 15% FINER THAN0.02 mm. F3 a. GRAVELLY SOILS CONTAINING MORETILIAN 20% FINER THAN 0.02 mm. AND SANDY SOILS (EXCEPT FINE SIL'FY, SANDS) CONTAINING MORE TI-lAN 15% FINER THAN 0.02 mm. b. CLAYS WITH PLASTICITY INDEXES OF MORE THAN 12. EXCEPT VARVED CLAYS. FA a. ALL SILTS INCLUDING SANDY SILTS. b. FINE SILTY SANDS CONTAINING MORE THAN 15% FINER THAN 0.02 mm. c. LEAN CLAYS WI-FH PLASTICllY INDEXES OI- LESS THAN ]2. d. VARVED CLAYS. o ~ ~ ~ ~o g .I f~' ~I~,~,,. "~ ANCHORAGE ALASKA 99503 (907) 278-1551 ganuars/~,~ 1979 W. O. ~ A~}~53 Grid: 3236 BC & E/J&B c/o John Berggren SRA Box 47D-B Anchorage, Ak 99507 Subject: Addendum No. 1 to Subsurface Investigation 40 Acre Parcel on Old Seward Highway Gentlemen: The test hole logs and the percolation test data have been examined and 'the general information placed on Figure 4. Based on the field observations, the .soil conditions ]nave been classified in one of four categories. Recommendations for development of on-site sewage treatment syste~ns Jn the various areas are listed below. Est.i/~tated percolation rate less than 5 min./inch This area centains primarily NFS sandy gravel or gravelly 'sand or near NFS F-1 and F-2 slightly silty sandy gravel and slightly silty gravel].y sand. This material is relatively free draining. Ground water problems were not observed in this area. A design value of ~25 square feet per bedroom should provide a conservative basis for design of on-site sewage treatment systems within this area. Estimated percolation rate 5 to 15 m~n./inch Soils in this area are geuerally gravelly silty sands to gravelly sandy silts. However, the material is not unusually dense and the percolation test perfor!ned on test hole ~36 is believed to he representative of this area. A maximum design value of 190 sq.ft./bedroom should be acceptable in these areas, llt may be possible to substantially reduce this design value and the required size of soil absorption systems if a test hole is placed on lots in this area and a percolation test performed. Estimated percolation rate more than 15 min./inch Soils within this area are t,,pically a stiff to hard gravelly sandy silt. The area also contains some peat. Soils are generally quite tight, however, we believe a Bc & E/J&B c/o John Berggren January 26, 1979 Page 2 location on each lot in the area can be found in which the percolation rate is less than 60 minutes per inch (the slowest usable rate by current municipal regulations). A test hole should be placed before house construction begins on each lot where a on-site waste-water disposal system is contemplated in this type of soil. If the initiaA test hole on the lot indicates poor permeability, it may be advisable to probe several locations on the lot to determine the best location for the system. Rather large absorption trenches should be contemplated throughout this area. D. Wet Areas - Surface or subsurface water could hamper the operation of sewage treatment systems within this area. Development of streets and utilities within the subdivision will alter the drainage patterns and may cause an increased portion of the land to become usable. Test boles should be placed on each lot wlthin this area to deter- mine whether or not sufficient clearance between an absorption system and ground water can be achieved to meet current regulations. We trust the above meets your present requirements. If we can be of further assistance on this matter, please do not hesitate to contact us. Very sincerely, ALASKA T E S T LA B R. Mark Hansen Approved by: Melvin R. Nichols, PE Laboratory Manager RMH: mm At tacl~u]ent s cc: Dave Grenier ~ Tryck Nl~uan & Hayes 34 ,; FLo rt~ '! ® ® /d~Sr-'~ '~ x / ® \ / TEST HOLE LO~A~ION~ EXCAVATED ON A 40 ACRE T~ICT for BC&E/J&B FIGURE 2 MAP IDENTIFYING ...... · ....... BOUNDaRiES OF SOIl, TYPES FOUND ON A 40 ACRE TRACT FOR BC&E/J&B Description of Map Units 1 2 3 ,Well-drained gravels and sands Slower draining gravelly sandy silts Wetter areas consisting of valleys and sloughs FIGUt~ 3 ESTIMATED PERC. RATES MINUTES/INCH FIG. 4- Test Hole #1 D__epth in Feet From To 0.0' - 1 .5 1 .5' - 3.5 3.5' - 6.5 6.5' - 8,0' Table A WO #A18753 Logged By: Client Date:. 10-28-78 Soil Description Organic Topsoil. Si~ty Sandy Gravel, moist, GM - F-]. Silty Gravelly Sand, moist, SM - F-2, bccasional cobbles. Sandy G_~ravell~ Silt, SM/ML, F-4, dmnp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 8.0t None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole D_~/oth in Feet From To 0.0' - 0.5' 0.5' 6.0~ 6.0' 8.0' 8.0' - 12.0' Bottom of Test Hole: Frost Line: Free Water Level: Remarks: Table A WO #A18753 Logged By: Client Date: 10-28-78 Soil Description Organic Topsoil. Coarse Sandy Gravels, GP - NFS, damp. Coarse Sand with thin Silt layers, SP/SM - ~FS/F-2, damp. Coarse Sand with layers of pea gravel, SP, NFS, damp. ~2.0' None Observed None Observed Test Hole Lo~ged By Client Verified by Alaska Testlab Test Hole ~epth in Feet From To 0.0' - 8.0' Table A WO I~A18753 Logged By: Client Date: 10-28-78 Soil Description Peat, wet, Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 8o0~ None Observed None Observed Hole filled with water and observed by Alaska Testlab. snow when Test Hole #4 Table A WO #A18753 Logged By: Client Date: 10-28-78 pepth in Feet From To 0.0' - 1o0' Soil Description Organic Topsoil. 1.0' - 3.0" 3.0' - 8.0' Bottom of Test Hole: Silty. Sand~ Gravel, GM - F~l, damp. Fine Gravelly Silt~ Sands, damp. 8.0~ SM Frost Line: None Observed Free Water Level: None Observed Remarks: Test Hole Logged By Client Verified by Alaska Testlab Test Hole ~t5 pepth in Feet From To 0.0' - 0.5' 0.5' - 2.5" 2.5' - 8.0' 8.0' - 12.0' Table A WO ~A18753 Logged By: Client Date: 10-28-78 Soil Description Organic Mat° Silty Sandy Gravel with sliqht organic content F-1 - GM, d~np. Silty Sandy Gravels, GM - F-l, damp. Coarse Gravelly Sands, SP - NFS, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 12.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testiab Test Hole ~6 D__epth in. Fe_e__t From To 0.0' - 1.0' 1.0' - 2.0' 2.0' - 12o0' Bot%om of Test Hole: Frost Line: Free Water Level: Remarks: Table A WO ~A18753 Logged By: Client Date: 10-28-78 Soil D e s_c r i_~ t io_n_____ __ Organic Topsoil. Organic _Silty _Sandy Gravel,. GM - F-l, damp. Sandy Gravels, GP, NFS, damp, 60% plus #4 aggregate, cobbles to 8 iuches. 12.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole #7 Depth in Feet From To 0.0' 1.0' 1.0' - 12.0" Table A WO #A18753 Logged By: Client Date: 10-28-78 Soil Description Organic Topsoil. Sand~ Gravels, GP, NFS, damp, 12 inches, 60-70% plus ~4 agg. cobbles to Bottom of Test Hole: Frost Line: Free Water Level: Remarks: ~2.0' ~one Observed None Observed Test .Hole Logged By Client Verified by Alaska Testlab Test Hole #8 pe_j~th in Feet From To 0.0' - 2.0' 2.0' - 4.0' 4.0' - 7.0' Table A WO #A18753 Logged By: Client ]Date: 10-28-78 Soil Description Organic Topsoil Silt, ML, wet. Coarse Gravels, NFS. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: None Observed -7.0' Test Hole Logged By Clien-L Hole full of snow when observed by Alaska Testlab Test Hole #9 D__epth in Feet From To 0.0' - 1.5' 1.5' - 2.5" 2.5' - 10.0' Table A WO #A18753 Logged~ By: Client [)ate: 10-28-78 Soil Descriptiqn Organic Topsoil. Coarse Sandy Gravels, ~ilty Gravelly Sands, GP, NFS, damp. SM, F-2, d~p. Bottom of Test Hole: Frost Line: Free Water Level: 'Remarks: 10.0' None Observed None Observed Test'Hole Logged By Client Verified by Alaska Testlab Test Hole #10 Depth in Feet From To 0.0' - 0.5' 0.5' - 1.5' 1.5' - 3.0' 3.0' -~ 12.0' Table A WO #A18753 Logged By: Client Date: 10-28-78 Soil Description Organic Topsoil. ~il%~v_ San~ Gravel, G~, F-l, damp. Gravell~ Sands, SP, NFS, damp. Layered Sandy Gravels and Gravelly Sands, GP/SP, NFS, damp. Bothom of Test Hole: Frost Line: Free Water Level: Remarks: 12.0' None Observed None Observed Test Hole Logged By Client Verified by Alhska Testlab Test Hole t[11 ~e_pth in Feet From To 0.0'- 3,5' 3.5' - 6.0~ Table A WO 9A18753 Logged By: Client Date: 10-28--'78 Soil Description Peat with boulders~ Sandy Gravels with cobbles, GM - Y-~, to 5 feet then saturated a{ 6 feet. damp Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 6.0~ None Observed 6.0' Test Hole Logged By Client Verified by Alaska Testlab Test Hole D_~_pth in Feet From To Table A WO #A18753 Logged By: Client Date: 10-28-78 Soil Description Organic Layered GP/SP, damp. Silt, SM, damp. Coarse. Sandy Gravels, cobbles. Topsoil. coarse Gravels and[ Gravelly Sands, GP, N~S, damp, with Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 14.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab ~ample Depth 1 4~0' 2 8.0' Type of Dry M_~% Sample S_~trenq~h ~roup Unified 1.4 G None A GP 6.2 G None B SP/SM Remarks: 2. 3. 4o 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #13 Table A WO #A18753 Logged By: Client Date: 10-28-78 pepth in Feet From To Soil Descri]~t~ion 0.0' - 0.5' Organic Topsoil. 0.5' -- 2.5" Coarse Gravels, GP, NFS, damp. 2.5' - 8.0' Sal}_d~y Gravels, GP/GW, NFS, damp. 8.0'/~-~1-{)[0"~x/\ Sand,__ SP/SM, NFS, damp. 10.0' 14.0' Sand7 Gravels with cobbles, / Bottom BY ~ t Hole: 14.0' GP/GW, NFS, damp. Frost Line: None Observed Free Water Level: None Observed Remarks: Test Hole Logged By Client Verified by Alaska Testlab Sample Depth ~ 1 9.0' 6.6 Type of Dry Sample Strength Group Unified G None B SP/SM R~arks: ~. 3. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #14 D~pth in Feet From To 0.0' - 0.5.' 0.5' - Table A WO t~A18753 Logged By: Client Date: 10-28-78 & 1-9-79 Soil Description Topsoil. Coarse ~and~ Gravels GW/GP, NFS, damp. with cobbles to 8", Bottom of'Test Hole: Frost Line: Free Water Level: Remarks: 12.0' None Observed None Observed Test Hole Logged By Client and Redug and Verified by Alaska Testlab (1-9-79) S~nple /Depth M% 1 2.0'-12.0' 6.7 Type of Dry ~amplq ~.trength G None Group Unified C GW Remarks: 2. 3. 4. 5. 6. Type of Sample, U = Undisturbed. Dry Strength, N=Nonel L=Low, M=Medium, Group refers to similar material, this General Information~ see Sheet 1. Frost and Textural Classification, see Unified Classification, see Sheet 3. G=Grab, SP = Standard Penetration, H=High. study only. Sheet 2. Test Hole #15 ~e~th in Feet From To 0.0' - 1o5' 1.5' 3o0~ 3.0' 12o0' Table A WO ~A18753 Logged By: Client Date: 10-28-78 Soil Description Organic Topsoil. Coarse Gravels, GP, NFS, damp. COarse Sandy Gravels with cobbles, NFS, d~p. GP/GW, Bottom of Test Hole: Frost Line: Free Water Level: R~arks: 12.0~ None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Sa_~le pepth 1 10.0' Type of Dry M% Sample Strength Group Unified 4.2 G None C GW Remarks: 1. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. 2. Dry Strength, N=None, L=Low, M=Medium, H=High. 3. Group refers to similar material, this study only. 4. General Information, see Sheet ~. !5. Frost and Textural Classification, see Sheet 2. 6. Unified Classification, see Sheet 3. Test Hole ~16 _De_loth ia Feet From To 0.0' - 1.5' 1.5' - 8.0' 8.0' - 9.0' 9.0' - 12.0' Table A WO ~A18753 Legged By: Client Date: 10-28-78 Soil Description Organic Topsoil. ~andy Grave]., GP/GW, NFS, damp, with Gravelly Sand, SP, NFS, damp. Sandy Gravel, GP/GW, NFS, damp, with cobbles. cobbles. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 12.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Samp~__e Depth M_% I 9.0' 2.8 Type of Dry Sample Strength Group Unified G None C GW Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet ~. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole If17 D_~_th in Feet From To 0.0' - 0.5' 0.5' - 5.5" 5.5' - 10.0' Table A WO ttA18753 Logged By: Client Date; 10-28-78 Soil Descri.~ion __ Topsoil. Coarse Gravels with cobbles up to 8 inches, GP, NFS, damp. Gravelly Sandy Silt, SM/ML, F-4, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 10.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Sample Depth 1 8.0' Type of Dry M_2%' Sample Strengt~ ~roup Unified 11p0 G None D ML Ren~arks: 1. 2~ 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole It18 Depth in Feet From To 0.0' - 1.5' 1.5' - 6.0' Table A WO #A18753, Logge~ By: Clien% Date: 10-28-78 , Soil Description Organic Topsoil. Gravelly Sandy Silt, SM/ML, F-4, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 6.07 None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test IIole #19 pepth in Feet From To 0.0 ' -~.~5.'.~ - Bot Os~~ of Te - Hole: Fro Lina~: Free Water Level: Remarks: Table A WO #A18753 Logged By: Client & ATL Date: 10-28-78 & 1-9-79 Soil Description Organic Topsoil. Coarse ~andy Gravels, GP, NFS, Gravelly Sand, SP, NFS, damp. damp. 13.0' None Observed None Observed Test Hole Logged By Client Verified by Alaska Testlab Test Hole #20 perth in Feet From To 0.0' t.0' 1.0' 12.0' Table A WO #A18753 Logged By: J.D. Mack Date.: 1-10-79 Soil Description Topsoil. Gr__a_v__e~ Si]._t~ Sands, SM/ML, F-2/F-4, damp, cobbles to 12 inches. Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed ~ample Depth M__% 1 6.0'- 8.0' 12.3 Type of Dry Sample Strength Group Unified G None D ML Remarks: 1. 3. 4. 5. 6. Type of S~nple, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole ~21 ~epth in Feet From To 0.0' - 2.0' 2.0' - 8.0' 8.0' - 12.0' Table A WO ~A18753 Logged Hy: J.D. Mack Date:' 1-9-79 Soil Description Topsoil. Sandy Gravel with cobbles to NFS/F-i, damp. Gravell~ ~ilt, ML, F-4, damp. 8 inches, GW, Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed Depth M_~ 2.0'- 8.0' 5.4 8.0'-12.0' 12.2 Type of Dry Sample Strength Group Unified G None C GW G Slight D ML Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet ~. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #22 Depth in Feet From To 0.0' 1.0' 1.0' 12.0.' Table A WO #A18753 .Logged By: J.D. Mack Date: 1-.9-79 Soil Description To~lsoil. Layered Sandy Gravels (GW), and Gravelly Sands (SP), maximum aggregate size 5" Bottom of Test Hole: Frost Line: Free Water Level: 12.0' Ngne Observed None Observed Sample Depth M% 1 2.0'-12.0' 4.0 Type of Dry Sample Strength Group Unified G None C GW Remarks: 2. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, II=High. Group refers to similar materJ, al, this study only. General 'Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole $23A Depth in Feet From To 0.0' - 2.0' 2.0' - 8.0' 8.0' - 10.0' Bottom of Test Hole: Frost Line: Free Water Level: Remarks: Table A WO #A18753 Logged By: J.D. Mack Date~ 1-9-79 Soil Description Topsoil. C~arse Sandy Gravels, Silt, ML, F-4, damp. 10.0' None Observed 7.0'-8.0' only Test Hole 23A, test hole 0.23, GP, NFS, wet. 80' uphill from water seepage at Test Hole #23 ~epth in Feet From To 0,0' - 1.5' 1o5' - 12.0-' Table A WO ~1At8753 Logged By: J.D. Mack Date: 4-9-79 Soil Description Topsoil. gravell~y Siit, ~, F-4, damp. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: I2.0' None Observed None Observed Small water seepage at 4' to 4.5' below groun~ surface Test Ilole 1t24 .Depth in Feet From To 0.0' 1.5' 1.5' - 3.5" 3.5' - 5.0' 5.0' - 8.0' Table A WO ~A18753 Logged By: J.D. Mack Date~ 1-11-79 Soil Description Organic Topsoil. San¢]~ ~ravel, GP, NFS, damp. Gravelly Silty Sand, wet, SM, F-2. Dense-dry Gravell~ Sandy silt, ML, Bottom of Test Hole: Frost Line: Free Water Level: Remarks: None Observed None Observed Water seepage at -3.5' ~ample ~epth I 7.0' Type of Dry M% Sample Strenf[th Group Unified G Slight D ML Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified ClassificatJ. on, see Sheet 3. Test Hole #25 ~epth in Feet From To 0.0' - 1.5' 1.5' - 2.5' 2.'5' - 10.0' Table A WO #A~8753 Logged By: J.D. Mack Date: 1-~1-79 Soil Description Organic Topsoil. Sand, SP, NFS, wet. Gravelly. Sand~ Silt, ~L, t~-4, damp, dense. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 10.0' None Observed 2.0' to 2.5' Water seepage between 2.0' and 2.5' Test Hole #26 Depth in Feet From TO 0.0' 2.0' 2.0' - 10.0' Table A WO ~A18753 Logged By: J.D. Mack Date: 1-9-79 Soil Description Organics mixed with cobbles. Gravelly Sandy Silt, ML, F-4, becoming wet at -8.0'. damp, Bottom of Test Hole: Frost Lille: Free Water Level: f0.0' None Observed None Observed pepth M~% I 6.0'- 8.0' 11.7 Type of Dry ~ample ~trength Group Unified G Slight D ML Remarks: 2. 3. 4. 5. 6. Type of Sample, G~Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M-=Medium], H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Te. st Hole #28 Dept. h in Feet From To Table A WO #A18753 Logged By: J.D. Mack Date: 1-9-79 'Soil Description TopSoil. Coarse Sandy Gravels with boulders and cobbles throughout depth, GW/GP, I~S, damp. Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed S~]ple Depth ~ I 5.0'-10,0' 4.8 Type of Dry S~]ple Strength [~roup Unified G None C GW Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, Ii=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #29 D_epth in Feet From To 0.0' - 2.0 2.0' - 12.0 Table A WO #A18753 Logged By: J.D. Mack Date: 1-9-79 Soil Description Topsoil~ ~[ravelly ~and,~ Silt, SM/ML, F-4, damp. Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed ~ample Depth M__% t 5.0'-10.0' 12.0 Type of ~ample Dry Strength Group Unified G Slight D ML R~narks: 1 . 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #30 Table A WO t~A18753 Logged By~ J.D. Mack Date: 1-1'1-79 D__epth in Feet From To Soil Description 0.0' 1.0' 10.0' - 12.0 Bottom of Test Hole: Top~oil. Coarse Sandy Gravels with cobbles and occasional boulders, GP, NFS, damp. Gravelly Sands with occasional damp. 12.0' cobbles, SP, NFS, Frost Line: None Observed Free Water Level: None Observed ~ample Depth 1 8.0' M% Type of Dry Sample Strength Group Unified G None C GW Rem]arks: 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole #31 Table A WO #A18753 LQgged By: J.D. Mack Date: 1-11-79 Depth in Feet From To Soil Description 0.0' 2.0' Orggnic Topsoil. 2.0' - 4.0~ ~andy ~ravels, GW, NFS, damp. 4.0' - 7.0' Dense, dry Gravelly Silts, ML, Bottom of Test Hole: 7.0' ~ - Frost Line: N~ne Observed Free Water Level: None Observed Test Hole #32 D__epth in Feet From To 0.0' - 2.0' 2.0' - 4.03 4.0' - 8.0' 8.0' - 12.0' Table A WO #A18753 Logged By: J.D. Hack Date: 1-10-79 'Soll Description Organic Topsoil. Sandy Silts and ~ilty Sands, ML/SM, F-4/F-2, d~ap. Slightly Silty Sand, SP/SM, NFS/F-2, occasional cobbles. Gravelly Silty Sands, SM/SM, -2, moist to wet. Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed Sample Depth I 5.0' 3 10.0' Type of Dry M% Sample Strength Group Unified 4.4 G None B SP/SM 9.2 G None B SP/SM Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Stahdard Penetration, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, H=High. Group refers to similar material, this study only. General Information, see Sheet 1. Frost and Textural Classification, see Sheet 2. Unified Classification, see Sheet 3. Test Hole ~33 D~th i.n Feet From To 0.0' - 2.0 2.0' - 4.0 4.0' - 12.0 Table A WO #A18753 Logged By: J.D. Mack Date: 1-9-79 ' Soil Descriptio__n Organic Topsoil~ S_~il_~ ~and, SM, F-2/F-4, damp. Gra____vell~_y Sands~ SP, NFS, damp, cobbles to 10~. occasional Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed Test Hole I[34 Depth in Feet From To 0.0' - 0.5' 0.5' -. ]2.0' Table A NO #A18753 Logged By: JoD. Mack Date: 1-10-79 Soil Description To~soil. Clean coarse Sand Gravels with clean Sand layers, cobbles to-J2", GP/GW, NFS, damp. Bottom of Test Hole: Frost Line: Free Water Level: 12.0' None Observed None Observed Test Hole #35 D_~th in Feet From To Table A WO 1~A18753 Logged By: J.D. ~ack Date: 1-17-79 Soil Description Organic Topsoil. Layered Sand~ Gravels (GW) and gravels (GP) .. Bottom of Test Hole: Frost Line: Free Water Level: Remarks: 15.0' None Observed Ncne Observed Percolation test hole located on top of knob. Test Hole ~36 D_/qpth in Feet From To 6"1 - 20.0~ Bott~?~/eest Frost Line: Free Water Level: Hole: Remarks: Table A W0 #A18753 Logged By: T. Barber Date: 1-16-79 Soil Description Org~]ic Topsoil. G~ave~l~ Sa~d~ Silt. 20.0' None Observed None Observed Percolation test hole in lower silt area. ~ample ~e_p_~! ~! 2.5I 5.0' 10.0I 15.0' 20.0' Type of Dry Sample Strength Group Unified G D HL G D ML G D ML G D ML G D ML R~]arks: 2. 3. 4. 5. 6o Type of Sample, U = Undisturbed. Dry Strength, N=None, L=Low, M=Medium, Group refers to similar material, this Genera]. Information, see Sheet 1. Frost and Textural Classification, see Unified Classification, see Sheet 3. G=Grab, SP = Standard Penetration, H=High. study only. Sheet 2. Test Hole t137 Table A WO ~A18753 Logged By: L. Sc~midt Date: 1-17-79 perth in Feet From To Soil Description Organlc Topsoil. Gravelly S_ilty Sands/Sandy Silts. Bottom of Test Hole: 20.0' Frost Line: None Observed Free Water Level: None Observed Remarks: Percolation test hole in upper silt area. Sample Dept~ ~0.0' 15.0' 20.0' Type of Dry M__~o S_ample S__trength Group Unified G D SM/ML G D G D SM/ML Remarks: 1. 3. 4. 5. 6. Type of'Sample, U = Undisturbed. Dry Strength, N=None, L=Low, M=MedJum, Group refers to similar material, this General Information, see Sheet 1. Frost and Textural Classification, see Unified Classification, see Sheet 3. G=Grab, SP = Standard Penetration, H=High. study only. Sheet 2. Test Holo L.otl - Doscription GuMe Frost Classification -- NFS, Fl, F2, F3, F4, see "Soft Classification Texture of Soil - An engineering classification of the softs by particle size and proportmn, see "Soft Classification Chart", note thc proportions are approximate ami modifications to the soil group due to stratification, inclusions and changes in properties are included. .d_an~, mm*tare forms portion of color, less tb~n pl,tstic limit, I.W, NP, M% ur dilatency.j Density - refers to more-or-less non.cohesive soils, such as sand gravel mixtures with or wkhout a fine fraction, derived from drilling action and/or sample data; usually described as: very loose, loose, medium dense, very dense. General inten: is to portray earthwork characteristics. Stiffness- refers to morc-ordcss cohesive soils and fine grained silts of the clay-*ih groups. Derived from drill ac.on and/or sample data. Very soft, soft, stiff, very std'( and hard are commonly used terms. Particle size - The largest particle recovered by the split spoon is 1-3/8", Shelby tube 3", auger flights (minute-man) 2", Auger flights {13-$0 hollow sirra} 6'-8". Larger particles are described indirectly by action of the drftling and arc referred to as cobble~, 3" to 8", or boulders 8"+. Therefore when reviewing the gradation sheets, if any, the description on the hole log nlust be considered for anindi'cation of larger particle*, Unified Soil Classification - This is a two leteer code. See Unified ~lassification sheet I'~ur~her definition, hi some eases AASHO and/or FAA soil classifications may be shown as well as the uldfied. AtterbergLimfts - useful for fine grained and other plastic softs. p.~I; natural moisture content believed to be less than plastic limit ~nit$ l,~w+; n~tutal moisture co'teal believed to be greater Ihan liqmd limk NP; non-plastic, useful as a modifying description of some silty ~d'riah, Rock flour -finety ground soil tbac is not plastic but od~erwise appears Organic Contenl usually described as Peat, PT, sometimes includes of all organic, ~ as Pe.~l. This nlay include tundra, muskeg and bog materiah Muck - a modifier used to describe vet5 soft. strut-organic deposits usuafly occuring below a peat deposit. .Amorj~hus peat -- organic particles nearly or fully disintegrated. Bottom of TesthoLa -- includes last samph' interval. Frost Line - seasonal frost depth as described by drdling action ami/or Frozen Ground - other than frost tine, described by samples, usually includes description Oi ice content, oflen wftl Plclude modifwd Unilicd Classification for frozen softs -- this :s a special case related to permafrost studies. Free Water Level - The free water level noted dur~ngdriUing. Thisls soiIs requires observation wells or piezomeler instal]a.ons, used only m special cases, Blow/6" - The number of blows ufa 140 weight free falling 30" to advance a 2" split spoon 6"; the number of blows for a 12" advance is. by definition, the standard penetration. .4% - natural moisture content of iht soft sample, usually not performcd on clean sands or gravels belo~v thc waler table. S__P, rt. ters to 2" split spoon driven into tile soil by 140 pound weight, a disturbed sample, .~., thin wall tube, "Shelby" used to obtain undisturbed ~amplcs of fine grained soil, ~, "gr~b" disturbed sample from auger flightsorwaltoftrencb. g, cut *amp:e, undisturbed sample from wall of trel~ch. L=Low, M=Medium, H=High (;rou~. - Tbe samples are pl~ccd into apparently similar groups based reflect the general dbtrubed characlerislics of Ihe ~oils essigned to thc SOIL, CLASSIFICATION CHART 30S GRAVEL CLAY CLAYEY CLAYEY CLAYEY 0 10 OR sILTY SILTY SILTY ,k ~ SAND SANDY GRAVEL GRAVELLY SAND 20 30 40 50 60 G RA V E L (+¢ 4 SC R E E N) % )RAVEL 70 80 BY WE GHT GRAVEL 90 100 NONFROST SUSCEPTIBLE SOILS ARE INORGANIC SOILS CONTAINING LESS TNAN 3% FINER TI4AN 0.02 mm. GROUPS OF FROST-SUSCEPTIBLE SOILS: F1 GRAVELLY SOILS CONTAINING BETWEEN 3 AND 20% FINER THAN 0.02 nam. F2 SANDY SOILS CONTAINING BETWEEN 3AND 15% FINER THAN 0.02 mm. F3 a. GRAVELLY SOILS CONTAINING MORE THAN 20% FINER THAN 0.02 mm, AND SANDY SOILS (EXCEPT FINE SILTY, SANDS) CONTAINING MORE I'NAN i5% FINER TNAN 0.02 mm, b, CLAYS WlTFI PLASTICITY INDEXES OF MORE TI-lAN 12. EXCEPT VARVED CLAYS. F4 a. ALL SILTS INCLUDING SANDY SILTS. ' b. FINE SILTY SANDS CONTAINING MORE THAN t5% FINER THAN 0.02 mm. c. LEAN CLAYS WITH PLASTICITY INDEXES OP LESS THAN 12, d, VARVED CLAYS. TRYCK ~' office, 7401 Street Anchor,ge, Al,ska 9950t , 90 ;'-279-0543, Cable TNHANCAK, Telex 090-25332 NYMAN s~HAY6S 8171.0 September 18, 1979 Mr. Jerry Weaver Planner Municipality of Anchorage Planning Department City Hall Annex Anchorage, Alaska 99501 Dear Jerry: Attached are copies of the logs for the wells drilled on the Bounty Terrace Subdivision property. Please note that these wells were drilled to locate a community water source, not individual water sources; hence, small veins of water sufficient for individual residential use were passed, looking for a larger capacity source. Attached also ls a drawing of the small drainage way through the property. This drainage way was located on the site by our survey crew. Sincerely, TRYCK, NYMAN & HAYES Harry F. Shore Landscape Architect 6 o 0 0 0 0 0 o 0 0 0 0 0 0 I J j · : 0 0 0 0 0 0 o