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HomeMy WebLinkAboutPARK PLACE S-4674 ANCI{QRAGE, ALASKA 99502 (907) 279 2511 G£ORGEM. SULLIVA~ MAYOR DEPARTMENT OF HEALTH AND ENVIRONMENTAL PROTECTION (825 "L" Street) March 15, 1978 File No.: PB3 DOWL Engineers 4040 "B" Street Anchorage, Alaska 99503 Attn: Mr. Robert P. Grier, P.E. Subject: Park Place Subdivision - Lots 9, 10, & 11. Dear Mr. Grier: This Departn~nt has reviewed Subject as submitted and finds this will meet conditions with which this Department is concerned. / ~'ohn ~. Lynn ///Environmental Engineering JWL:lmp cc: Don Alspach - Planning Department Bill Jones - Planning Department March 13, 1978 Rolf Strickland Municipality of Anchorage Department Health and Environmental Protection 825 L Street Anchorage, AK 99501 Subject: Park Place Subdivision Dear Mr. Strickland Transmitted herwith is Addendum No. 2 Subsurface Investigation for Proposed Park Place Subdivision. As you see we have decided to go with additional soils and try to prove out an additional lot for the subdivision. The enclosed preliminary plat is approved by the platting board subject to DHEP approval of soils. Please review this addendum as it relates to the proposed subdivision with on-site sewage disposal. If you have any questions please call us. When your review is complete we will pick up the letter if you will give us a call. Yours very truly D I CK INSON- OSWALD-WALCH- LEE ENGINEERS Robert P. Grier, P.E. cc: John Berggren Enclosure RPG/bjh ~'":':~'~=~ ........ 4040 "B" STREET, ANCHORAGE, ALASKA 00503 PHONE: 907-~, . -~..,'84'~- February 2, 1978 W.O. ~AJ8342 Mr. Rolf Strickland Municipality of Anchorage Department of Public Health & Environmental Protection 825 "L" Street Anchorage, AK 99501 Subject: Addendum to Subsurface Investigation for John Berggren's Park Place Subdivision on Golden View Drive Dear Rolf: We have no hesitation that a septic system can be placed on Lots 9 and 1J on the west side of the subdivision. We have placed numerous test holes in those two lots and' have found dry areas, in highly permeable soils~ on the eastern portion of both of those lots. We also believe, that we will be able to prove out Lot 10 as well. However, we' are going to have to place two or three additional holes to verify our'opinion. Rather than expend additional testing funds at this time, we would prefer to have you approve all of the lots except Lot 10 based on the existing test holes, and recommend approval of Lot 10 subject to reviewal of additional soils information to be submitted after the preliminary plat has b%en approved by the Platting Board. If our additional testing should prove it feasible to place an on-site sewerage disposal system on Lot 10, we would send to you that data as a second addendum to our soils report. It can then be reviewed, approved and the final plat be filed as passed by the Platting Board. Hgwever, if our additional testing shows the lot isn't us&ble, we will incorporate the land presently shown on Lot 10 into Lots 9 and 11, cut back the number of lots in the subdivision by one and file the plat with that configuration. Because this would be a reduction in density, that adjustment could be allowed by the ~~': staff rather than having to go back to the Platting Mr. Rolf Strlckl~%~ Municipality of Anchorage February 2, 1978 Page 2 We would appreciate your written approval of this concept as we have discussed by phone as soon as possible so that our client can proceed with closing of the property sale. Thank you for your cooperation and assistance in this matter. Very sincerely, ALASKA TESTLAB Melvin R. Nichols, P.E. Laboratory Manager MRN:rb cc: John Berggren February 1, 1978 .~Ir. John Bergren 7301 Chad St. Anchorage, Ala.ska 99502 Dear Mr. Bergren: The Department of Health and Environmental Protection has reviewed the e:(tensive soil testing report on the .qubjeet property and has discussed the matter at length with the soils lab. It is our preliminary determination that all property east of Lorett~ St. (lots 1 thru $) are satisfaetor¥ for on site sewage disposal and water supply. The three larger lots west of Loretta St. (lots 9, 10 & 11) do present a problem because of surface water We would ask that additional testing be performed in this area to dete~mine the exact extent that this property can be developed. It is highly possible that only two lot~ can be developed in this area, however, we will .await the results of further te~ting prior to m~king a final decision. Sineerely, Rolf Striekland, ~q. S. Dept. of He~th and Environmental Protection cc: Bob Grief Don Alspaeh Mol Nichol~_~ John Lynn ~. John Berggren 7301 Chad Street Anchorage, AK Subject: 4040 "B" STREET, ANCHORAGE, ALASKA 99503 PHONE: 907-279-25~.tu~x~/c.. . Prelimi~y Report of Subsurface Investigation Tract A[~Place Subdivision Located within SE 1/4, Sec. 3, T.11N., R.3W., Seward Meridian, Alaska Dear John: Our initial exploration was conducted on the site December 21 and 22, 1977 and consisted of placing six, 16' deep test holes. This showed that the east half of the parcel was adequate for construction of on-site sewerage disposal systems. However, it also showed that at least some of the portion of the west side of parcel was not satisfactory for on-site sewerage disposal. : At our recommendation, and upon your authorization, we mapped the surface conditions that might delineate where the interface between the satisfactory subsurface conditions on the east and the unsatisfactory conditions on the west existed. We then placed an additional 11 test holes, ranging in depth from 5' to 16', to clearly define the interface. All drilling was accomplished using a track mounted Mobile Drill B-50 drill rig owned and operated by Denali Drilling, Inc. All drilling was supervised, test holes logged and surface mapping done by Mr. O.M. Hatch, senior technician/staff geologist with Alaska Testlab. 'Regulations of the State of Alaska, Department of'Environ-" mental Conservation, require that the bottom of any on-site sewerage disposal system be 4' above the water table at its highest seasonal level. They also require that where on- site water is also developed that the area of ~he lqt ~ust be at least 40,000 square feet. Ali. of this 40,000 square feet must be available for sewerage disposal and meet the... water table and soil permeability requirements. The problem on the subject site is a high ground s~ater level, as well as deep peat in some areas. On the enclosed sketch, we have outlined the area of Tract A where construc- tion of on-site sewerage disposal systems will not be allowed by State Regulation because of deep peat and/or a high Mr. John Berggren January 11, 1978 Page 2 ground water level.. None of this area can be used to meet the 40,000 square foot minimum size requirement of the State of Alaska. This "unuseable" area represents 40% of the total site. No development requiring sewage disposal will be allowed ,, · - until public sewer is available. within the unsuitable area Even holding tanks would not be allowed under existing State regulations· The soil on the east portion of the site, the "useable" area, is permeable enough to accept on-site sewerage disposal systems. This was verified through percolation testing. If we can offer any further clarification on this-matter, please do not hesitate to contact us. Very sincerely, ALASKA TESTLAB Melvin R. Nichols, P.E. Laboratory Manager MRN:rb Enclosures 4040 "B" STREET ANCHORAGE, ALASKA 99503 (907) 278-1551 March 10, 1978 W.O. #A18342 Grid #3337 Mr. John Berggren 7301 Chad Street Anchorage, AK 99502 Subject: Addendum ~2 Subsurface investigation for Proposed Park Place Subdivision Dear Mr. Berggren: As requested we have performed additional exploration for the above project. The scope of the investigation covered in this report is as follows: a. One test hole was drilled on Lot 10 of the propo'sed subdivision and a percolation test was performed. b. One test hole was drilled in the proposed street right- of-way. Included with this transmittal are the following: Figure 1 vicinity ~'!ap Test Hole Location Sketch Figure 2 Table A Test t{ole Logs Standard Explanatory information Sheets 1-3 Test Hole ~20 was placed in the NE portion of Lot 10 as shown on Figure 2. The log of Test Hole ~20 is included in Table A. Free ground water was encountered at 14.0' depth. In order to perform a valid percolation t~st, the drill rig was moved 5' and test hole ~20 redrilled t~ 10' depth. This was done to maintain %he required 4' clearance between the proposed on-site sewage treatment system and the free ground water level. The 10' test hole was then filled with water and ].eft overnight to saturate. On returning %he next day ~.he hole was empty. The hole was then refilled with water and the ~zater level carefully monitored fo~ the next 60 minutes. The observed minimum percolatioa rat~ was 10 minutes/inch- ThJ. s corresponds to the re~ired absorption pit area ol 165 s.f./bedroom. This exp].oration verifies that an on-si're s~ewage disposal sys-l~em can be placed on Lot 10. Mr. John Berggrelk.,~ March 10, 1978 Page 2 Test hole #21 was placed in the cul-de-sac of the proposed street right-of-way. The log reflects both field and labora- tory visual soil classification. This phase of exploration was conducted March 1, 1978. A Nodwell mounted B-50 drill rig owned and operated by Denali Drilling, Inc. was used to advance the holes. The test holes were logged and located in the.field and the peHcola- tion test performed by Mro O.M. Hatch, geologist/senior technician with Alaska Testlab. We trust the above is sufficient to your. immediate needs. If you have any questions or if we can be of further services., please do not hesitate to contact us. Very sincerely, ALASKA TESTLAB R. Mark Hansen RMH:rb Enclosures Melvin R. Nichols, P.E- Laboratory Manager 4 VICINITY 34 " I0 MAP 35 36 II 12 14 = I' MILE i 4040 "B" STREET ANCHORAGE, ALASKA 99503 Mr. John Berggren 7301 Chad Street Anchorage, AK 99502 Subject: (907) 278-1551 January 30, 1978 W.O. A18342 Grid: ~3337 Subsurface investigation for Proposed Park Place Subdivision Dear Mr. Berggren: mnvestmga~ion ~ As requested, we have completed the subject ' ~' ~' The scope of the invesL:igation includes 20 test holes and examina'tion of the site for suitability of on-site sewerage systems. Transmitted with the report are the following: Test Hole Location Sketch Test Hole Logs Explanatory information Grain Size Distribution Curves Idealized Soil Profiles Figure ! Table A Sheets Sheets 4-.5 Figures 2-3 Exploration was conducted December' 21 and 22, 1977, January 9, and 10~ !97,9, and January 19, 1978. A Nodwell Mounted B-50 drill 'c owned and operated by Denali Drilling Inc~ was -., ~, x lor~=,tion- The rig was equipped with a solid ll~e~.~ ~or the e .p ..... flight auger. The first two series of test holes were~ '' d loc~hed in the fzel , logged and percolation tests perzorme-G by Mr O.N. Hatch, Geologist/Senior Technician with Alaska ' on January 19th were~ Te .....l~b~ The tes~. holes performed logged and located by Mr. T.L. Barber, Geologist wi~h A_asKa ~' ~'~ab Table A is the log of the test holes reflecting field observations and visual classification of the soils ~ ~ ..... ~-~D en~ounaered °n ~is site with n~mz~er of the holes had no apparent fr~e ~round water during drilling, yet, upo~ retgr~i~g ~o Lhe site a.~.[e several days, many of the holes were full or partially full of wa Eer. The ground water depths shown on Figure 2 were observed several days after the holes had been drilled. Springs exist on the si%e, but they are on ~lhe edge of the : -, e the toe of the hill rather thsn on the~billside- low a].ea n~ar . ., , .., :~.~.px,-~med -ko follow topographic pattern, Un~easonally warm wea~er prevaztea during par't, of the exploration, and we bel.ieue sor0e of the Mr. John Berggren January 30, 1978 Page 2 water depths may reflect snowmelt or surface water. Soil logs on file with the Municipality of Anchorage, Department of Environmental Conservation, for the adjacent property do not reflect the high ground water shown for this project. Most of the test holes contain perforated PVC pipe and water depths can be monitored in the future if the need arises. The idealized soil profiles (Figures 2-3) are not drawn to scale, and the depth of the test holes is greatly exaggerated. Soil conditions between holes are interpolated, based similar soils observed in the various test holes. Two percolation tests were performed. The method recommended by the Municipality of Anchorage was used for the tests. Results are as follOwS. Required Sq.~t./ Rate Bedroom Test Hole ~1 _ 5 min/inch -~ ~ Test Hole 46 ~~ · We trust the foregoing is sufficient to your present needs. If you have any questions or if we. can be of further service, please do not hesitate to contact us. Very truly yours, ALASKA TESTLAB Me~-~ ~. Nichols, PE Laboratory Manager RMH:mfm Attachments Test Hole Log- Description Guide The soil descriptions shown on the logs are the best estimate of the soil's characteristics at the time of field examination and as such do not achieve the precision of a laboratory testing procedure. If the log includes soils samples. those samples receive an independent textural classification in the laboratory to verify tbe field examination. The logs often include the following items: Depth Interval -- usually show~ to 0.1 foot within that zone no significant change in soil type was observed through drill action, d rect observation or sampling. Frost Classificatio~n - NFS, Fl, F2, F3, F4, see "Soil Classification Chart" Texture of Soil - An engineering classification of the soils by particle size ~ proportion, see "Soil Classification Chart", note tbe proportions are approximate and modifications to the soil group due to stratification, inclusions and changes in properties are included. Moisture Content - this is a qualitative measure: dry_, no or little apparent surface moisture, ~aamp, moisture forms portion of color, less than plastic limit, wet, ~o free ~w~ter, often soft, if cohesive soil, saturated, free water may be squeezed out, ifa free draining soil; dilatent at natural moisture content, if a non-plastic silt or fine sand. (The moisture courent is furtber defi~edby reference to PI, LW, NP, M% or dilatency.) Density - refers to more-or-less non-cohesive soils, such as sand gravel tnixtures with or witbout a fine fraction, derived from drilling action and/or sample data; usually described as: ve'y loose, loose, medium dense, very dense. General intent is to portray eartbwork characteristics. Stiffness - refers to more-or-less cohesive soils and fine grained silts of ~silt groups. Derived from drill action and/or sample data. Very soft, soft, stiff, very stiff and hard are commonly used terms. Particle size -- Tbe largest particle recovered by the split spoon is 1.~'w,, Shelby tube 3". anger flights (minute-manl 9" Auger flights (B-50 hollow stem) 6"-8". Larger particles are described indirectly by action of the drilling and are referred to as cobbles, 3" to 8", or boulders 8"+. Therefore when reviewing the gradation' sheets, if any, the description on the hole log ~nust be considered for an indication of larger particles. Unified Soll Classification -' This is a two letter code. See Unified Class~~f~ther definition. In soxne cases AASHO and/or FAA soil classifications ~nay be shown as well as the unified. Atterberg Limits - useful for fine grained and other plastic soils. Pl; natural moisture content believed to be less than plastic limit PD-; natural moisture content believed to be between plastic and liquid l~-rnit s L~w+; natural moisture content believed to be greater than liquid limit · NP; non-plastic, useful as a modifying description of some silty ~terials. Dilatenc~ -- is tbe ability of water to migrate to the surface of a s'-aturated- or nearly saturated soil sample when vibrated or johed - used as an aid to determine if a fine grained soil is a sligbtly or non-plastic silt or a volcanic ash. Rock flour :- f nelv ground soil that is not plastic but otherwise appears iimilar to a clayey silt. Organic Content -- usually described as Peat. PT, son climes includes ~ete particle~ 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 ~nodifier used to describe very soft, semi-organic deposits hsually occuring below a peat deposit. Amorphus peat - organic particles early or fully disintegrated. Fibrous Peat - organic particles more-or-less intact. Bottom of Testhole - includes last sample interval. Frost Line -- seasonal frost depth as described by drilling action and/or samples at the time of drilling. Frozen Ground other than frost line, described by samples, usna]!y i~ludes description of ice content, often will include modified Unitied Classification for frozen soils - this is a special case related to per~nafrost studies. Free Water Level - The free water level noted during drilling. This is ~ot necessarily the static water table at the time of drilling or at other seasons. Static water table determination in other than very permeable soils requires observation wells or piezomcter ins~allations, used only in special cases. Blow/6" - The number of blows of a 140 weigbt free falling 30" to advance a 2" split spoon 6"; the number of blows for a 12" advance is, by definition, the standard penetration. M% - natural moisture content of th~ soil sample, usually not p~rformed on clean sands or gravels below the water table. _Type of Sample -- S.~P, ~cfers to 2" split spoon driven into the soil by 140 pound weight, a disturbed sample, ~, thin wall tube, "Shelby" used to obtain undisturbed samples of fine grained soil. .G., "grab" disturbed sample from auger flights :~r wall of trench, C, cut sample, undisturbed sample from wall of trench. Dry Strength - a useful indicator of a soil's clayey fraction, N=None, L=Low,l'd~ed urn. H=Higb Group - The samples are placed into apparently s}milar groups based ~ color and texture and are ar ~ trarily assigned a group letter. Further disturbed tests including Atted~erg Limits, grain size, moisture dens y reJationship, etc. mhy be pt:iformed on the group and are assumed to reflect the general distrubed characteristics of the soils assigned to the group. This is an important phase of the soil andysis and is used to sta~dardize the various quabtative determinations and to reduce thc number of quantitative tests necessary to describe tbe soil Inrlss. SOIL CLASSIFICATION CHART CLAY CLAYEY _AYEY OR~ \ CLAYEY CLAYEY OR SILTY SILTY S~LTY SILTY GRAVEL SAND GRAVELLY SAND 'SANDY GRAVEL SAND GRAVELLY SAND kiDY GRAVEL GRAVEL 10 20 30 40 50 60 70 80 90 100 RAVEL (+.~4 SCREEN) % BY WEIGHT ~----- ~~ ~ 3% FINER THAN 0.02 mm. NoNFROST SuscEPTIBLE SOILS ARE INORGANIC SOILS cONTAINING LESS THAN GROUPS OF FROST-SUSCEPT 13LE SOILS: F1 GRAVELLY SOILS cONTAINING BETWEEN 3 AND 20% FINER TFIAN 0.02 mm. F2 SANDY SOILS cONTAINING BETWEEN 3 AND ].5% FINER THAN 0,02 mm. F3 a. GRAVELLY SOILS coNTAINING MORETFIAN 20% FINER THAN 0.02 mm. AND SANDY SOILS (EXCEPT FINE. SILTY, SANDS) cONTAINING MORE THAN 15% FINER THAN 0.02 mm. b. CLAYS WITH PLASTICITY INDEXES OF MORE TtlAN 12. EXCEPT VARVED CLAYS, F4 a. ALL SILTS iNCLUDING SANDY SIL-I-S' b. FINE SILTY SANDS coNTAINING MoRE T. HAN I5% FINER THAN 0.02 mm. c. LEAN CLAYS WlTII PLASTICITY INDEXES OF LESS THAN i2. d, VARVED CLAYS, o ~ Date: 12-22-77 Logged By: O.M.Hatch Test Hole .#1 Table A WO ~A18342 Depth in Feet From To 0.0 0.5 0.5 3.0 3.0 16.0 Bottom of Test Hole: Frost Line: Free Water Level: pample pepth 1 5.0 2 10.0 3 15.0 Soil Description Brown Peat, Pt, damp, soft. F-4, brown pandy Silt, ML, with trace gravel, damp, stiff, NP. F-l, brown Silt~ Sandy Gravel, GM, damp, medium density, poo--rly graded, occasional cobbles, sub- rounded particles to 6". 16.0 ft. 1.0 ft. None observed while drilling; None observed 1-12-78 Type of Dry M% Sample ~trengt~ Group Unified 7.2 G N A GM 8.0 G N A GM 8.1 G N A GM 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 Table A Date: 12-22-77 Logged By: O.M.Hatch WO ~A18342 _Depth ._i_n Feet From To 0.0 1.0 1 .0 2.0 2.0 16.0 Soil Description Brown Peat, Pt, damp, soft. F-4, brown S_andy Silt, ML, damp, stiff, NP. NFS, brown Gravelly Sand, SP-SM, with trace. Silt, damp, mediu~-~-ensi~y7 subrounded particles to 3", becomes slightly siltier, possibly F-2 below 11'. Bottom of Test Hole: Frost Line: Free Water Level: Sample Dep~ ~ 5.0 2 10.0 3 15.0 ~6.0 ft. 0.5 ft. 1.0 ft. while drilling Type of Dry M% S_ampl~ Strength G_roup. unified. 3.4 G N B SP-SM 6.7 G N B SP-SM 9.9 G L C SP-SM Remarks: 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 ~2A drilled to 7' depth, 5' west of ~2 No water observed 1-12-78 in ~2A Date: 12-22-77 Logged By: O.M.Hatch Test Hole ~3 Table A WO ~A18342 ~Depth in Feet From To 0.0 ~ 1 .0 1 .0 2.5 2.5 16.0 Soil Description Brown Peat, Pt, damp, soft. F-2, brown Silty Sand, SM, damp, medium density, trace gravel with subrounded particles to 3". NFS, brown Sandy Gravel, GP-GM, with trace Silt, damp, medium density, subrounded particles to 6". Bottom of Test Hole: Frost Line: Free Water Level: 16.0 ft. None observed while drilling; None observed 1-12-78 S~ple Dept~ 1 5.0 2 10.0 3 15.0 Type of Dry Group. Unified M% Sample Strength __ 6.6 G N B GP-GM 7.2 G N B GP~GM 5.9 G N B GP-GM 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. Date: 12-22-77 Logged By: O.M.Hatch Test Hole 94 Table A WO ~A18342 pepth in Feet From To 0.0 7.0 7.0 11 .0 11.0 16.0 Soil Description Brown ~ea%., Pt, damp to wet, soft. F-2/F-3, grey Gravelly Silty Sand,.SM, damp to wet, medium density, c'l~yey ahd ~rganic in zones. F-2, Silty Sand, SM, saturated, non-cohesive. Bottom of Test Hole: Frost Line: Free Water Level: 16.0 ft. 1.0 ft. 11.0 ft. while drilling. Also seepage from Peat below 5'. Sample pepth. 1 5.0 2 10.0 Type of Dry Group unified M% Sample Strength _ 414. G N Peat Pt 14.4 G M E OL Remarks: 1. 3. 4. 5. 6. Type of Sample, G®, SP = Standard Penetration, U = undisturbed. Dry Strength, N=None, L=L°w' 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. Date: 12-22-77 Logged By: O.M. Hatch Test Hole ~5 Table A WO ~A18342 De_~pth in Feet From To 0.0 7.0 7.0 10.0 10.0 16.0 Soil Description Brown Peat, Pt. F-4, grey Sandy Silt, ML, with trace Peat in lenses, damp, s't~ff~ NP. F-2, grey Silty Sand, SM, saturated. Bottom of Test Hole: FroSt Line: Free Water Level: Sample. Dqpth 1 5.0 2 10.0 3 15.0 16.0 ft. 10.0 ft. while drilling, showe Type of Dry Strength Grou~ unified M% Sample _ 346. G -- 22.5 G L E ML 15.1 G L F SM Remarks: 1. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed. 2. Dry Strength, N=None, L=L°W' M=Medium, H=Bigh. 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. Date: 12-22-77 Logged By: O.M.Hatch Test Hole ~6 Table A WO ~A18342 Depth in Feet From To 0.0 0.5 0.5 1.5 1.5 16.0 Soil Description Brown Pea____~%, Pt, damp, soft. F-4, brown San____d~ Silt, ML, damp, stiff, NP. 'lt Sandy GraVel, GM, damp, ~- brown S1 y ~. 1, ~ ~. '~---~0orl~7 gra~ea, occasional medium ~ensl~y, cobbles, subrounded particles to 6". Bottom of Test Hole: Frost Line: Free Water Level: 16.0 ft. 1.0 ft.. No~e observed while drilling; None observed 1-12-78 Sam____pl~ De____pt~h 1 5.0 2 10.0 3 15.0 Remarks: Type of Dry M% Sample Strength Group unif___ie~ 6.1 G N A GM 8.1 G N A GM 9.7 G N A GM 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. ~J' Date: 1-9-78 Logged By: O.M.Hatch Test Hole 97 Table A WO #A18342 D__epth in Feet From To 0.0 2.0 2.0 3.5 3.5 16.0 Soil Description Brown Peat, Pt, damp, soft. F-4, brown Gravelly Sandy ~il_~t,2~M, damp, stiff, subro--~ded ~articles to · F-2, grey to brown Gravelly Silty Sand, SM, damp, medium density, subrou~-d~d p~ti'cles to 2". Bottom of Test Hole: Frost Line: Free Water Level: 16.0 ft. 1.5 ft. None observed while drilling; 1.0 ft. 1-12-78 S~ple ~epth. 1 5.0 2 10.0 3 15.0 Type of Dry M% ~ample ~tren~gth Grou~ G G G unified 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. Date: Logged By: -9-78 O.M.Hatch Test Hole ~8 Table A WO ~A18342 D_epth in Feet From To 0.0 3.0 3.0 16.0 Soil Description Brown Peat, Pt, damp, soft. F-2, grey to brown Gravelly Silty Sand, SM, poorly graded, medium density, su~roun'ded particles to 2". Bottom of Test Hole: Frost Line: Free Water Level: 16.0 ft. 1.5 ft._ None observed while drilling; 1.0 ft. 1-12-78 Smnpl_~e 1 2 3 Depth Type of M% Sample G G G Dry ~trengt~. Group unified 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. Date: Logged By: 1 -9-78 O.M.Hatch Test Hole ~9 Table A WO $A18342 pepth in Feet From To 0.0 10.0 Soil Description Brown Peat, Pt, damp to saturated, soft, become~ s~ft to'stiff at 9'. Bottom of Test Hole: Frost Line: Free Water Level: Sample. D_ep?__h 1 2 3 10.0 ft. 1.0 ft. 1.0 ft. while drilling Type of Dry M% Sample Strength Group Unified G G 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. Date: Logged By: 1-9-78 0. M. Hatch Test Hole 910 Table A WO 9A18342 D_epth in Feet From To 0.0 4.5 4.5 5.0 Soil Description Brown Peat, Pt, damp to wet, soft. F-2, grey Gravell~ Silt~ Sand, wet, medium density, subrounded particles to 2". Bottom of Test Hole: Frost Line: Free Water Level: ~amp~ Depth 1 2 3 5.0 ft. 1.0 ft. 1.0 ft. while drilling M% Type of Dry Sa__m_pl~ Strength Group unified G 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. Date: Logged By: 1 -9-78 0. M. Hatch Test Hole ~11 Table A WO ~A18342 Depth in Feet From To 0.0 7.5 7.5 8.5 Soil Description Brown Peat, Pt, damp to saturated, soft. F-4, grey Gravelly Sand~ Silt, ML, damp, stiff, subrounded particles to 2". Bottom of Test Hole: Frost Line: Free Water Level: Sample Depth 1 2 3 8.5 ft. 1.5 ft. 1.5 ft. while drilling Type of M% Sample G G G Dry Strength Grou~ unified 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. Date: Logged By: -9-78 O.M.Hatch Test Hole ~12 Table A WO 9A18342 Depth in Feet From To 0.0 7.0 7.0 8.5 Soil Description Brown Peat., Pt, damp to saturated, soft. F-2, grey Gravelly Silty Sand, SM, wet, medium density, s6bro~e~-~rticles to 2". Bottom of Test Hole: Frost Line: Free Water Level: Sample pepth 1 2 8.4 ft. 1.0 ft. 3.0 ft. while drilling Type of M% Sample G G Dry Strength Group Unified Remarks: 1. 3. 4. 5. 6. Type of Sample, G®, 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. Date: Logged By: 1 -9-78 O.M.Hatch Test Hole ~13 Table A WO ~A18342 Depth in Feet From To 0.0 6.0 6.0 10.0 Soil Description Brown Peat, Pt damp to saturated, soft. F-2, brown to grey Silty Gravellv Sand, SM, wet to damp, medium densi~v, subro~nded particles to 2" Bottom of Test Hole: Frost Line: Free Water Level: Sample Depth 1 2 3 10.0 ft. 1.0 ft. 4.0 ft. while drilling Type of Dry M% ~ample Strength Group unified G G G 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. Date: Logged By: 1-9-78 O.M.Hatch Test Hole ~14 Table A WO ~A18342 Depth in Feet From To 0.0 2.0 2.0 16.0 Soil Description Brown Peat., Pt, damp, soft. F-2, brown to grey Silty. Gravelly Sand, SM, damp, medium density, poorly graded, subrounded particles to 2" saturated seam 12.0'-13.0'. Bottom Of Test Hole: Frost Line: Free Water Level: ~ample pepth 1 2 3 16.0 ft. 1.0 ft. 12.0 ft. while drilling; 1.0 ft. 1-12-78 M% Type of .Sample G G G Dry Strength Group unified 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 #14A drilled to 5' depth, 5' north of $14 Date: Logged By: 1-10-78 0.M.Hatch Test Hole $15 Table A WO $A18342 Depth in Feet From To 0.0 3.0 3.0 12.0 12.0 16.0 Bottom of Test Hole: Frost Line: Free Water Level: Soil DeScription Brown Peat, Pt, damp, soft. F-4, grey pandy Silt, ML, with trace gravel, damp, stiff, NP. F-4, grey Sandy Silt, SM, with trace gravel, damp, stiff, NP. 16.0 ft. 2.0 ft. None observed while drilling; 5.5 ft. on 1-12-78 Sample 1 2 3 Depth Type of M% Sample G G G Dry ~trengt~. Group Unified '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. Date: Logged By: 1-10-78 O. M. Hatch Test Hole 916 Table A WO ~A18342 Depth in Feet From To 0.0 I .0 1.0 5.0 Soil Description Brown Peak., Pt, damp, soft. NFS, brown Gravell~ Sand, SW, damp to saturated, medium density. Bottom of Test Hole: Frost Line: Free Water Level: 5.0 ft. 1.0 ft. 3.0 ft while drilling Sample 1 2 3 pepth Type of M% pample G G G Dry ~trengt~ Group Unified Remarks: 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. Date: Logged By: 1-10-78 0 .M.Hatch Test Hole $17 Table A WO $A18342 Depth in Feet From To 0.0 1.0 1.0 6.0 6.0 9.0 Soil Description Brown Peat, Pt, damp, soft. F-4, brown Gravell~ Sand~ Silt, SM, damp, stiff. F-2, brown Silty Gravelly Sand, SM, damp to saturated, me~'~ensit~'-P°~rlly graded, few cobbles to 6", becoming less silty with depth. Bottom of Test Hole: Frost Line: Free Water Level: 16.0 1.9 9.0 ft. ft. while drilling; ._~..ft Sample Depth M% Type of Dry Group unified Sample Strength ~ G G G Remarks: 1. Type of Sample, G®, 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. Date: Logged By: 1-19-78 T.L. Barber Test Hole 918 Table A WO ~A18342 D_epZh in Fee%. From To 0.0 2.0 2.0 5.0 Soil Description Brown Peat, Pt, wet, soft. F-2, grey Silky Sand, SM, fine and medium grained, wet to satur~d7 ~-~w to medium density. Bottom of Test Hole: Frost Line: Free Water Level: ~ample' Dept~ 1 2 3 5.0 ft. 1.0 ft. 5.0 ft. while drilling Type of DrY M% Sample Strength Group Unified G Remarks: 1. 3. 4. 5. 6. Type of Sample, G®, 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. Date: Logged By: 1-19-78 T.L. Barber Test Hole ~18A Table A WO #A18342 Depth in Feet From To 0.0 1.5 1.5 15.0 Soil Description F-4, brown Pea~, Pt, and Sandy Silt, ML. F-2, brown Sil~y Sand., SM, damp to saturated, medium density. Bottom of Test Hole: Frost Line: Free Water Level: Sample Depth 1 5.0 2 10.0 3 15.0 ft. 4.0 ft. 11.0 ft. while drilling 2.0 ft. 1-20L78 M% Type of Dry Sample Strength Group Unified G G Remarks: 1. 3. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = undisturbed. Dry Strengths N=None, L=L°w' 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. 1-19-78 T.L. Barber Date: Logged By: Test Hole ~19 Table A WO ~A18342 DePth in Feet From To 0.0 1.0 1 .0 7.0 7.0 16.0 Soil Description Brown ~eat., Pt, and Sandy Silt, ML. F-4, brown Gravell~ Sand~ Silt, ML, wet, stiffi NP, sharp/s~brounded p~rticles to 1". F-2, brown Silt~ Gravelly ~and., SM,~damp, medium density. Bottom of Test Hole: Frost Line: Free Water Level: Sample pepth 1 5.0 2 10.0 3 16.0 16.0 ft. 1.0 ft. None observed while drilling 2.0 ft. 1-20-78 Type of M% Sample G G G Dry S_tren_gt_h_ _Group_ Unified Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = undisturbed. Dry Strength, N=None, L=L°w' 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 920 Table A WO #A18342 Logged By: O.M. Hatch Date: 3-1-78 pepth in Feet From To 0.0' - 0..5' 0.5' - "1.0' 1.0' - 3.0' 3.0' - 13.0' 13.0' - 16.0' Soil Description Brown Peat, Pt, damp, soft. F-4, brown Sandy. Silt, ML, damp, stiff, NP. F-l, brown Silts Sand Gravel, GM, damp, rounded and subrounded particles to 3". F-4, brown Gravell~ Sandy Silt, SM, damp, stiff, rounded and subroun~ed particles to 3" F-2, brown Silt~ Gravelly Sand, SM, damp to saturated, medium density, rounded and subrounded particles to 2". Bottom of Test Hole: Frost Line: Free Water Level: 16.D' Remarks: Trace at surface 14.0' Moved 5' and r.edrilled to 10' Sample _Depth 1 5.0' 2 10.0' 3 15.0' Remarks: 1. 3. 4. 5. 6. Type of Dry Blows/6" M% Sample Strength Grou~ unified G SM G SM G SM Type of Sample, G®, SP = Standard Penetration, U = Undisturbed. Dry Strength, N=None, L=L°w' 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 Table A WO ~A18342 Logged By: O.M. Hatch Date: 3-1-78 Depth in Feet From To 0.0' - 0.5' 0.5' - 1.5' 1.5' - 2.5' 2.5' - 8.0' 8.0' - 10.0' 10.0' - 15.0' Soil Description Brown Peat, Pt, damp. F-4, brown Sandy Sil~, ML, damp, soft to stiff, NP. F-2, brown Sil%z Gravelly Sand, SM, damp, medium density, rounded particles to 2". F-l, brown very silty very Sandy Gravel, GM, damp, medium to h~h density, °Cc~sion~l cobbles, rounded particles. F-2, brown Silty. Gravelly Sand, .SM, damp, medium density, rounded and subrounded particles to 3". F-l, brow~ Silty Sandy Gravel, GM, damp to saturated, medium to'high ~ensity, occasional cobbles, rounded particles. Bottom of Test Hole: Frost Line: Free Water Level: Sampl~ pepth 1 2.5' 2 5.0' 3 10.0' 4 15.0' 15.0' Trace at surface J2.0' Blows/6" Type of Dry M% Sample Strength. ~roup unified 16.5 G N A SM 10.7 G N-L B GM 8.5 G N-L C SM 14.2 G L B GM Remarks: 1. 3. 4. 5. 6. Type of Sample, G=Grab, SP = Standard Penetration, U = Undisturbed- Dry Strength, N=None, L=L°w' M=Medium' H=High- Group refers to similar material, this study only. Genera]. Information, see Sheet 1. Frost and T~xtural classification, see Sheet 2. unified Classification, see Sheet 3. 164 th AVENUE 9 .IL,'_/! I .-~" ,~:s,,*7., 4~,.72.z SURVEYOR'S CERTIFICATE I ALLAN V~ LAHNUM , professional land surveyor, hereby certify that PL~T APPROVAL 3,9 CERTIFICATE OF OWNERSHIP and DEDICATION I Iwe), hereby cerfi~ that / am (we ore) the owner Is) of the property described NOTARY ACKNOWLEDGEMENT 1978 ACCEPTANCE OF DEDICATION Anchorage hereby accepts for public uses and for public purposes LEGEND D~00i271 r ~l~ VICINITY MAP ]2 PARK PLACE SUBDIVISION LOTS 1 THROUGH I1 A SUBDIVISION OF TRACT A,PLACE SUBD{VISION UNIT 1 ~ DIC1~1I'190II- C~WhLD.WhICH-ICC -~ CItGIIiCC~<; ANCHORAGE, ALASKA 104-ZO