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Home My WebLink About4.i_2001BaxterGeotechReport_04162021 MEMORANDUM TO: Neil Poulsen Building Inspection Department FROM: Harley Huestis � . Project Manager DATE: July 31, 2006 RE. Baxter Meadows Soils Report PIease find attached the soils report for Baxter Meadows. The report was done by SK Geotechnicai and Peccia Engineering, and included 37 test bores. The report concludes that there are three categories of soil types anticipated at the footing level (4' deep) — undisturbed gravel, undisturbed clay, and soft alluvial clays, which should be subexcavated and backfilled. The report also discusses the presence of groundwater. The entire report including all bore logs is included. 3985 Valley Commons Drive Bozemw),MT 59718 (406)586,9922 • FAX(406)586-9921 Geotechnical now*1 October 19, 2001 Project 005256B Mr. Gary Swanson, PE Robert Peccia &Associates P. 0. Box 5653 Helena, Montana 59620-5653 Dear Mr. Swanson; i Re, Preliminary Geotechnical Evaluation,Proposed Buildings,Baxter Meadows Subdivision, Bozeman,Montana The preliminary geotechnical evaluation for the buildings within the Baxter Meadows Subdivision has been completed, :The purpose of the preliminary;geotechnical evaluation was to evaluate subsurface soil and groundwater conditions related to general design and construction of proposed buildings. The work was performed in general accordance with our Proposal P-1083b to you dated Afgust 24, 2001, which you authorized on September 6, 2001. Field Procedures A total of 37 soil borings have been performed on the three one-quarter sections of the Baxter Meadows Subdivision. The locations of these borings are shown on the attached sketch. Penetration test borings are designated by the prefix "ST." The planned locations of borings ST-13, ST-16, ST-22, ST-26, ST-27, ST-28, ST-34 and ST-36 were not accessible to our truck-mounted drill rig or underground utilities were present. We therefore offset the locations from the staked locations. The locations we drilled were designated with a "A"suffix, i.e., ST-13A. Borings ST-I through ST-3 were performed on November 9 and 10,2001, as part of a preliminary geotechnical evaluation for a water treatment system within the subdivision. Borings ST-4 through ST-37 were performed between September 18 and 25,2001. The borings were performed with a Mobile B-61 truck-mounted core and auger drill. Sampling for the borings was conducted in accordance with American Society for Testing and Materials (ASTM)D 1586, "Penetration Test and Split-Barrel Sampling of Soils." A manual 140-pound hammer was used to perform the penetration tests. The blows for the last foot of penetration were recorded on the logs and are an index of soil strength characteristics. Groundwater was encountered in most of the borings, and the results are indicated on the attached logs. The period of observation was relatively short, and several days may be needed for groundwater to stabilize in a boring performed in clay soils, Numerous monitoring wells have already been installed on the site by others. Data related to groundwater fluctuations at these monitoring wells can be obtained from Robert Peccia & Associates, 2611 Gabel Road, P.O. Dox 80190, Billings, Pvlontana 59108-0190 Phone:(406)652-3930; Fax: 006)652-394q 603 Nikles Drive, PO. Box.5005. Bozeman, Montana 59715-5005 'hone: (406)585-341 1: Fax: (406)SRS-5R.55 Robert Peccia&Associates, Inc. Project 005256B October 19, 2001 Pa e 2 Results Logs. Log of Boring sheets indicating the depths and identifications of the various soil strata, the penetration resistances and groundwater level information are attached. It should be noted the depths shown as boundaries between the strata are only approximate. The actual changes may be transitions, and the depths of changes vary between borings. Site Conditions. Bozeman and Baxter Meadows Subdivision are situated in alluvial fan deposits emanating from the mountains to the south. Alluvial fan deposits are created by streams originating from the mountains and meandering northward into the Bozeman Valley. The streams create channels and alluvial gravel deposits. The streams create dips and swales along their courses, which eventually filled in with clays. This process has created quite variable thicknesses of the clay overburden over relatively short distances. Soils. The general soil profile encountered at the borings was I to 4 feet of organic clay topsoil underlain by alluvial clays over alluvial gravels. Groundwater was encountered in most of the borings at depths ranging from about 2 to 9 feet. The topsoil thickness;depth to gravel and groundwater, as well as the corresponding elevations are summarized in Table I below. ' Table 1. Summary of Topsoil, Gravel and Groundwater Boring Surface Elevatian Topsoil To of Gravel Groundwater Thickness Depth Elevation* Depth ST-1 4691.9 l 1/2' Elevation* ST-2 it } 1/2' 4690 1/2 4' 4688 4688.2 3' 4685 4673 3` 4685 ST-3 46$4.2 I1/2' S1/2' 46781/2 4' ST-4 4680 .E 1'ST-5 4690.5 6 }/2' 4667 7' 46661/2 ST-6 NE 13 1/2, 4677 NE— 15, NE 4672.3 4'ST-7 4697.1 46681/2 I� 6' 46661/2 4'NE--10, NE NE— to, NE ST-8 4693.E 1 1/2' NE—10' NE 81 ST-9 4686.5 I I/2' 4' 4682 1/2 7' 4679 1/2 46851/2 ST-10 4697.3 NE 6 1/2' 4691 NE-10' ST-11 4696.3 NE NE 31/2, 4693 7' 46891/2 ST-12 4671.1 3' T 4664 6' 4667 ST-13A 4668.9 21/2' 61/2' 46621/2 2' 4667 ST-14 4670.2 1' 71/2' 46621/2 4112, 46651/2 ST-I5 4675.4 31/2, 61/2, 4669 61/2, 4669 ST-16A 4680.2 3.1/2' NE-10' NE 3 1/2' 467E 1/2 Saturated ST-17 4680.9 11/2' 61/2' 46741/2 91/2' 46711/2 ST-18 4681.1 11/2' 61/2' 46741/2 6' 4675 ST-19 4683.6 21/2' 61/2' 4677 4' 46791/2 ST-20 4684.0 4' 6' 4678 6' 4678 ST-21 4686.3 11/2' 6' 46801/2 81/2' 4678 ST-22A 4689.8 4' 7'� 4683 71/2' 46821/2 Robert Peccia&Associates,Inc. October 19,2001 Project 005256B Pa e 3 Topsoil Top of Gravel Groundwater Boring Surface EIevation Thickness De td Elevation* De th Elevation* ST-23 4692.5 1' 61/2' 4686 91/2' 4683 ST 24 4695.7 1 1/2' 8 1/2' 4687 8' 4687 1/2 ST-25 4695.4 1/2' 2' 4693 1/2 4' 4691 112 ST-26A 4698.7 I' 81/2' 4690 111/2' 4687 ST-27A 4698.7 21/2' 7' 46911/2 41/2, 4694 ST-28A 4704.0 NE 61/2' 46971/2 4' 4700 ST-29 4702.0 2.1/2' 2 1/2' 4699 1/2 3' 4699 ST-30 4707.4 11/2' 11/2' 4706 51/2, 4702 ST-31 4718.1 11/2' 6' 4712 81/2' 47091/2 ST-32 4717.2 11/2' 3' 4714 9' 4708 ST-33 4710.5 . 1 1/2' 3' 4707 1/2 5' 470 1/2 0' ST-34A 4729.E - 1' 6 1/2' 4723 4 1/2' 4725 ST-35 4729.0 4727 5 1/2'! 4723 1/2 ST-36A 4732.2 1 1/2' 2 1/2' 4729 1/2 7 1121. 4724 1/2 ST-37 473 54 : 1' 6' 4730 1/2 NE-10' NE *Elevations rounded to the nearest 1/2 foot. NE=Not Encountered NE-10'=Not encountered to a depth of 10'. { Penetration tests in the alluvial clays were directly related to their relative moisture content. Lower penetration resistances were encountered in the wet clays, generally ranging from weight-of-hammer to about 4 blows per foot(BPF). These values indicated the wet clays were very soft to rather soft. On the other hand, rather dry to moist alluvial clays were encountered in many of the borings. In these borings, the penetration resistances were generally higher and ranged from about 5 to 12 BPF, indicating they were rather soft to rather stiff. Penetration resistances in the underlying alluvial gravels typically ranged from 25 BPF to 50 blows for 3 inches of penetration. These values indicated the underlying gravels were medium dense to very dense, but were mostly very dense. As can be seen in Table 1, groundwater was encountered at depths ranging from about 2 to 9 feet, although groundwater was not encountered in four of the borings. The groundwater table was generally at or slightly below the top of the alluvial gravels. In some of the borings, however, groundwater was present in the organic and/or alluvial clays above the gravel. Proposed Construction Building design and layout within various portions of the Baxter Meadows Subdivision is in preliminary stages. At this time, it is anticipated the buildings will likely be one to two stories with earth-supported concrete floors at or slightly above existing grades. Most of the buildings will be residential or condominium units, although Some commercial buildings, such as a veterinarian clinic, are also planned. The buildings will likely be constructed of wood framing. Some of the buildings may have crawl-space floor systems. Robert Peccia&Associates, Inc. Project 005256B October 19,2001 Page 4 The actual building layouts, foundation configurations and building loads are not known at this time. For the purpose of this preliminary report, we anticipate most of the planned buildings will be lightly-loaded structures. For lightly-loaded structures, we have assumed wall loads will be less than 2 laps per linear foot,column loads will be less than 30 laps, distributed floor loads will be Iess than 250 pounds per square foot(psi), and concentrated floor loads will be less than 1,000 pounds. Moderate- to heavy-loaded structures will have loads that exceed these values. Preliminary Analysis and Recommendations Foundations. Based on the results of the soil borings, it is our opinion the buildings can be supported on shallow-spread footings. As previously indicated, some of the borings encountered rather soft to rather stiff alluvial clays that can be used for direct support of proposed spread footings. On the other hand, some of the borings encountered wet and soft aIIuvial clays. These wet, soft alluvial clays are extremely moisture sensitive, and will become more disturbed during excavation. They will be too soft;to provide a suitable platform for footing construction and some additional subgrade preparation is needed. Table 2 below summarizes the anticipated footing conditions encountered at each of the borings performed throughout the site. We assumed the footings will bear at a depth of about 4 feet below existing grade, indicating the floor would likely match existing grades. On so gr me sites, however, ades beneath the floor maybe raised and the footings will actually be shallower than,indicated in the table. Table 2. Anticipated Footing Conditions and Preparation for Light Buildings Bolin Footin Sub rade at a De th of 4' Footing Su ort Gro undwater/Dewaterin ST-I Dense Gravels Undisturbed Gravels Yes ST-2 Dense Gravels Undisturbed Gravels yes ST-3 Medium to Stiff Clays Undisturbed Clays 5T-4 Yes Rather Soft Clays Undisturbed Cla s No ST-5 Soft to Rather Stitt-Cla s Undisturbed Cla ys ST-6Wet-ClaysNo Soft and Subexcavate/BackfilI Yes ST-7 Medium Clays Undisturbed Cla ST 8 No Medium Clays Undisturbed Cla s ST-9 No Rather Soft Cla ease Gravels Subexcavate/Backfill No S.T-10 Soft Cla s Subexcavate/BackfiIl Maybe ST-1I Dense Gravels Undisturbed Gravels No ST-!2 Soft Clays Subexcavate/Backfill Yes ST-!3A Soft Clays Subexcavate/Backfill Yes ST-14 Rather Soft Cla s Undisturbed clays ST-1 jMa be Rather Soft Cla s Subexcavate/Backfill Yes ST-16A Solt Clays ST-17 Subexcavate/Backfill Ma be Medium Cla Undisturbed Cla s No ST-18 Soft Cla vs Subexcavate/Backfill ST-19 Yes Soft Clays SubexcavateBackfill _ yes ST-20 Soft clays _ Subexcavate/BackfilE Yes Robert Peccia&Associates, Inc. October 19,2001 Pro ect Q05256B Page 5 Boris Footing Sub grade at a Depth of 4' Footin Su ort Groundwater/Dewaterin ST-21 Rather Soft Clays Undisturbed Clays No ST 22A Soft Clays SubexcavateBackfill Maybe ST-23 Soft Clays SubexcavateBackfill No ST-24 Soft Clays SubexcavateBackfill No ST-25 Dense Gravel Undisturbed Gravel Yes ST-26A Soft Clays SubexcavateBackfill No ST-27A Soft Clays SubexcavateBackfill Yes ST-28A Soft Clays SubexcavateBackfill Yes ST-29 Dense Gravels Undisturbed Gravel Yes ST-30 Dense Gravels Undisturbed Gravel Maybe_ ST 31 Soft Clays SubexcavateBBackfill No ST-32 Dense Gravels Undisturbed Gravel No ST 33 Dense Gravels Undisturbed Gravel Maybe ST-34A Soft Clays Subexcavate/Backfill Yes ST-35 Dense Gravels Undisturbed Gravel Maybe, ST-36A Dense Gravels Undisturbed Gravel No ST-37 Stiff Clays- Undisturbed Clays No i As can be seen in the table above, we anticipate three footing conditions.will be encountered for lightly- loaded buildings constructed over the site. These footing conditions are described below. Condition 1. Undisturbed Gravels. Ten of the 37 borings encountered alluvial gravels at depths of 4 feet or less. It is our opinion the alluvial gravels are suitable for direct support of proposed footings. On some of these sites, however, groundwater was encountered above the gravel and will be encountered in frost-depth footings trenches. Dewatering will therefore likely be required to lower the groundwater level during construction to allow for footing and foundation wall construction (see Borings ST-1 and ST-2). Condition 2. Undisturbed Clays. Nine of the 37 borings encountered rather soft to rather stiff alluvial clays that were considered a suitable subgrade for direct support of footings. Extreme care needs to be taken during construction in these areas to avoid disturbing the clay subgrade. Footing trenches should be excavated with a tracked backhoe working from the surface with a smooth-bladed bucket. Footings can then be supported directly on the undisturbed native clays. Similar to above, groundwater will likely be encountered during footing excavation on some of these sites(see Borings ST--3 and ST-14). If encountered,dewatering will be needed during construction. Condition 3. Subexcavate--Backfill. Eighteen of the 37 borings encountered wet, soft alluvial clays, which are unsuitable for footing support. On most of these sites, groundwater was also encountered in the alluvial clays, which contributed to their low strengths. It is our opinion subexcavation and backfilling with imported sandy gravel will be needed to improve the footing subgrade. Dewatering will be needed on most of these sites. Robert Peccia&Associates, Inc. Project 005256B October 19, 2001 Pa e b Subexcavate—Backfill, The borings indicated development over about one-half of the proposed subdivision will require subgrade improvement. Subexcavating and backflling on these sites (Condition 3)will provide a suitable platform during construction and reduce settlement. We recommend subexcavating the alluvial clays from beneath the proposed footings down to the alluvial gravels, or to a depth of 2 feet, whichever is less. When the subexcavations beneath footings encounter native gravels,it is our opinion imported sandy gravel backfill can be placed directly on the native gravels up to bottom-of- footing Ievel. Some of the borings, however, indicated the soft alluvial clays extended 3 feet or more below proposed bottom-of-footing level. On these sites, we recommend subexcavating 2 feet beneath proposed footings, and then placing a medium survivability woven geotextile fabric on the resulting subgrade and 2 feet up the sides prior to placing backfill. Subexcavations beneath proposed footings should extend I foot(horizontal)beyond the outside footing edges. We recommend using 3-inch minus sandy gravel as backfill beneath the proposed footings, which is readily available from several gravel suppliers in the Bozeman area. Backfill beneath proposed footings should be placed in lifts not exceeding 12 inches uncompacted thickness,and compacted to a minimum of 95 percent of its maximum dry density determined in accordance with ASTM Method of Test D 698 (standard Proctor). Bearing Pressure. The borings indicate spread footings bearing on the native gravels can be designed for net allowable bearing pressures ranging from 3,000 to 5,000 psf. Footings bearing on the alluvial clays or compacted backfill placed over the alluvial clays can be designed for a bearing pressure of 1,500 psf. We anticipate total and differential settlement of lightly-loaded structures bearing on spread footings as described above will not exceed 3/4 inch. Wood-frame buildings can generally tolerate movements of his magnitude. Floor Slabs. It is our opinion earth-supported floor slabs can be supported directly on the alluvial clays or compacted backfill placed over the alluvial clays after the organic clay topsoil has been removed. A few of the borings, however, indicated groundwater levels in the organic clays above the alluvial clays (see Borings ST-6 and ST-I3A). At these locations, dewatering will likely be necessary during removal of the organic clay topsoil and placement of fill to raise grades beneath the floor slab. Similar to the footings, we recommend a medium survivability woven geotextile fabric be placed directly on the clay subgrade to assist in stabilization of the underlying soft soils. We then recommend using 3-inch sandy gravel as fill to raise grades beneath the floor slabs. A leveling course of 6 inches of 3/4-inch minus crushed gravel road base could be placed on the sandy gravel fill for the concrete. Placement of significant fills on the alluvial clays will result in clay consolidation and excessive floor settlement. It is our opinion up to 3 feet of fill can be placed beneath proposed floor slabs without excessive settlement. If more than 3 feet of fill is needed, we recommend subexcavating the alluvial clays from,beneath floor slabs(and foundations) down to the alluvial gravels, then replacing these soils with compacted backfill up to the desired grades. Placing gravel fill over the native gravels will provide a more suitable platform during construction and significantly reduce the amount of total and differential settlement. Additional Geotechnical Evaluation The borings for the preliminary geotechnical evaluation were generally spaced 800 to 1,200 feet apart across the three one-quarter sections. Soil and groundwater conditions will change between the borings. Robert Peccia&Associates, Inc. October 19,2001 Project 005256B Page 7 We therefore recommend performing additional geotechnical evaluation once building Iocations and loads are better known. Additional geotechnical evaluation will include soil borings performed 100 to 200 feet apart to more accurately evaluate subsurface soil and groundwater conditions. Based on the conditions encountered, more detailed recommendations related to foundation and floor subgrade preparation can be provided. General The preliminary analysis and recommendations submitted in this report are based upon the data obtained from our soil borings performed at the locations indicated on the attached sketch. Groundwater observations in the borings were made at the times and under the conditions stated on the boring Iogs. These data were interpreted in the text of this preliminary report. The period of observation was relatively short, and fluctuations in the groundwater level may occur. We have appreciated the opportunity to provide these services. If you have any questions,please contact us. Sincerely, Professional Certification T hereby ci, at this report was prepared by m tW ,duly Licensed Professional En n er 'faf the State of Montana. CT r to ei10,y'_P�� o ngineer Lice Cory G. Rice, PE Reviewing Engineer gts/c gr:khr Attachments: Boring Location Sketch Descriptive Terminology Log of Boring Sheets ST-1 through ST-37 Descriptive Terminology Particle Size Identification Standard D 2437 - 93 Boulders . . . . . . . , . . • , , . Classification of Soils for Engineering Purposes Cobbles " (Unified Soil Classiication System) Gravel 3 Coarse . . . . . . . . . . . . . . . . . 3/4" Fine No. 4 t+ Criteria for Assigning Group Symbols and Group Haines Using Laboratory Tests " Soil Classification Sand S rou Group Name" Coarse . . . . . . . . . . . . . No. 4 to N Coarse- Gravels L Gravels G r GII Well-graded gravel` File Grained More than 50% of lessess Medium . No. I0 to N than 5$ finest a 4 and 1 a C,.a 3 No.40 to Nc Sons coarse fraction C,< 4 and/or 1 > > f 0 More retained on No. 4 4 3c GP Poorly graded Silt . . . . . . . . . . . . . . No, 200 to .00. than sieve gravel' Clay . . . . . . . . • . . . . , less than,00. 50% Gravels with fines Fines classify as HL.or HN rretaaine Hareessthan 12Y UFr SiltravelfOM o No- zoo Fines tiassify as CL or CH GC Clayey gravel"-" Relative Density of sieve Sands Crean Sands a = 6 and 1 s r-s 3F 541 Sy Well. raded sand` Cohesionless Soils coaror Wore oP Less than 5% fines se fraction C < >s and/or I >L, r passes Ito. 4 sieve 3 SP Poorly graded sand` very loose . . . . . . . . . . . . 0 t0 4 Sands with Pines Fines classify as ML or Mi SH Silty sand°`' loose . . . . . . . . . . . . . . . . . . S to l0 More than 12s fines medium dense° Fines classif as CL or CH SC clayeysme" 11 t0 30 Fine• Silts and Clays inorganic PI > 7 and lots on or above •k" line' LL Lean cla dense . . . . . . . . . . . . . . . . . 31 to 50 Grained Liquid limit less " very dense . . . . . . . soils than 50 . . . over SO 50% or PI <4 or lots below 'A" Ifne' Hi, Silt"" more organic Li quill limit • oven dried < 0.15 t."." passes > > tact - not Brae Or anic cTa Consistency of Cohesive Soils the No. r anic sl t..... 200 Silts and Inorganic sieve Liquid Itmit PI lots on or above 'A' line CH Fat clay"" Very soft . . . . . . . . . . . . • , . 0 to I' sieft 50 or 50 more PI lots below 'A' line MN Elastic silt"" Soft . . . . . . . . . . . . . . . . . . . . 2 t0 3 organic L4.aufui.d limit - oven dried < a 15 "� .rather soft . . . . . . . . . . . . . . . . 4 to 5 it -uid unit - not dried OR oroanle eta medium rganic si t - .- . • . • • . . . . . . . . . . . 6to9 HighFy Organic Soils Primarily organic matter. dark in color, and organic odor PT Peat rather stiff . . . . . . . . . . . . . 910 12 stiff , . 13to16 Based on the material passing the 3 (15 mn)'sieve. 'If soil contains a 15% sand. add 'with sand' to group none. very stiff 'If field sample contained cobbles or boulders, or troth. 41f fines classify aS it-HL. use dual symbol GC-(?l or SC.Sm' 17 to 30 add with cobbles or boulders. Or both' to group name. If fines are organic. add 'with organic fines' to group name. hard ^ave)s with 5 to I2%fines require dual symbols. �Tf soil contains a 15%gravel, add 'with gravel`to group Wane, ' • ' • • • • • • • ' • • • • . • . over 30 ''xl well-graded gravel with silt If Atterberg limits plot in hatched area. soil Is a LL.M-, well-graded gravel with clay ill cla y. poorly graded gravel with slit ilf soil contains 15 to 29% 1 000rly graded gravel with clay 'with graver whichever is plus No. predominant. add 'with sand' or �?• to 5 to 121 fines require dual s)mbols. If soil contains =30%plus No. 200.'predominantly sand, add well-graded sand with silt •sandy' to group name. �M poorwe)I ;rgIde"'asandixittilsilt "If soil contains z 30%plus No. 200. predominantly gravel. add SP-SC poorly graded sand with sit 'gravelly' to group name. e C." 0w/% _ 0 t y "P1 = 4 and plats on or above 'A' tine. Drilling Notes �t <4 or plots below 'A' lane. " x 0aa 'PI plots on or above W line. In plots below •A' line. Standard penetration test borings were advanced by 3 4"or6'/" hollow-stem augers,unless noted otherwise.letting water was us( ;u to clean out auger prior ro sampling only where indicated on logs For Classification of fine- rained sd;is / Standard penetration test borings are designated by the prefix "S'I und rine-grained, mctwn of coarse-grdine / (split tube). H 50 soils. / o Equation of A-tine ` Power auger borings were advanced by 4"or 6"diameter continu Horizontal of PI-4 to LL=25.5. / ��a flight, solid-stem augers. Soli classifications and strata depths we Ld 40 then PI-0.73(LL-20) Jj `� t;` inferred from disturbed samples angered to the surface and are, z Equation of"U"-line vertical at LL=16 to PI=7 i therefore, somewhat approximate. Power auger borings are then PI=0.9(LL-8) G designated by the prefix "B". ... 30 `-s / Eland auger borings were advanced manually with a I'/z"diamete auger and were limited to the depth from which the auger could b a 20 manually withdrawn. Hand auger borings are indicated,by the pri _j & M H OR off "FiA". to Sampling. All samples were taken with the standard 2" OD split- 7-- 0 fyll,.,on I-L tube sampler,except where noted. TW indicates thin-walled 4 - (undisturbed)tube sample. 0 0 l0 16 20 30 40 50 60 70 80 90 ioo n0 BPF. Numbers indicate blows per foot recorded in standard LIQUID LIMIT (LL) penetration test, also known as "N" value. The sampler was set E into undisturbed soil below the hollow-stem auger. Driving resistances were then counted for second and third 6" increments Laboratory Tests added to get BPF- Where they differed significantly, they are reported in the following form: 2/12 for the second and third 6" Dry density, pcf OC Organic content, % increments, respectively. Wet density, pcf S Percent of saturation, % WH. WH indicates the sampler penetrated soil under weight of Natural moisture content, % SG Specific gravity hammer and 'ads alone; driving not required. •..-- Liquid limit, % C Cohesion, psi l-L. Plastic limit, % 0 Angle of internal friction �VR• WR indicates the sampler Penetrated soil under weight of r( Pl Plasticity index, % qu Unconfined compressive strength, psf alone; hammer weight and driving not required. P200 %passing 200 sieve qp Pocket penetrometer siren th, tst g Note. All tests were run in general accordance with applicable AcZTU „,a....t, Geotechnical WIL 2611 Gabel Road, P.0. Box 80190 L 4 G O F B O R f Billings, Montana 59108-0190 Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256 BORING: $T-1 PRELIMINARY GEOTECHNICAL EVALUATION LOCATION: Baxter Meadows Subdivision See attached sketch. Bozeman, Montana DRILLED BY: L.Klocke METHOD: 3 1/4"HSA,Manual DATE: 11/9/00 SCALE: 1"=4' Elev. Depth Symbol Description of Materials BPF WL qp I Remarks 4691.9 0.0 ORGANIC CLAY,low plasticity,with roots and Boring elevations 690.fi 1. I2M, humus,black,moist,medium. (Topsoil)_ _ a� R LY provided by Robert POO GRADED_GRAVEL with SAND_, fine- Peccia&Associates. to coarse-grained, trace Silt and Cobbles, light brown,rather dry to waterbearing at 4',very dense. as (Alluvium) An open triangle in th 73 water level(WL) column indicates the depth at which water was first observed _ while drilling. A soli( 74 triangle indicates the -� stable groundwater level in the boring on � the date indicated o' so-3 " (11129100). - -trace Boulders below 101. Gp _� 43/50 ' 2 50-0" _4 50-3" 4667.9 24.0 END OF BORING 50-5"s t Waterbearing gravels observed at a depth of 4'while drilling. Water down 6.5' with 24'of hollow-stem auger in the ground. o A temporary piezometer was installed in the boring; g 5'slotted and 15'riser. Z On 11/29/00, RPA treasured the elevation of 5 groundwater of 4687.9. 4 N a nnc1ci SAV Geotechnical lk 2611 Gabel Road, P. 0.Box 80190 Billings, Montana 59108-0190 LOG OF B O R ( h Phone: (406) 652-3930, Fax: (4061652-3944 PROJECT: 005256 BORING: ST.2 PRELIMINARY GEOTECHNICAL EVALUATION LOCATION: Baxter Meadows Subdivision See attached sketch. Bozeman,Montana DRILLED BY: L.Klocke METHOD: 3 1/4"HSA,Manual DATE: 1119/00 SCALE: 1"=4' Elev. Depth Symbol Description of Materials BPF WL 4688.2 0.0 9P Remarks OL 4687.2 1.0 ORGANIC CLAY, low plasticity,with rants and humus black moist medium. �T-pso�_ _ _ _ 4/3 .L -� _f-, LEAN CLAY,slightlyplastic,some roots, trace CL Sand and humus, dark brown,moist,medium. 4685.2 3.0 (Alluvium) POORLY GRADED GRAVEL wifh SAND and 11/29/00 SAND,fine-to coarse-grained, trace Cobbles, light brown to dark brown,rather dry to waterbearing at 7', medium dense to very dense. (Alluvium) 26 Q 38 While drilling. GP — 24 GM 48/50= ' 100 4670.2 18.0 POORLY GRADED SAND,fFne-to _ W — coarse-grained,trace Sand and Silt, brown, waterbearing,very dense. (Alluvium) SP 50-4" 4666.2 22.0 _ POORLY GRADED GRAVEL w SA ith ND, fne- GP to coarse-grained,some Cobbles,trace Boulders, 4664.2 24.0 _ brown, waterbearing, very dense. (Alluvium) END OF BORING 50-3"s t Waterbearing soils observed at a depth of T while s drilling. Water down 8.5'with 25'of hollow-stem auger in the ground. C3 A temporary piezometer was installed in the boring; a 5'slotted and 15'riser. On 11/29/00, RPA measured the elevation of 3 groundwater of 4685.5. 4 N N a Cl 0052 66 Aft or Geotechnieal 2611 Gabel Road,P. O.Box 80190 LOG O F B O R I N Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PR07ECT: 005256 BORING: ST-3 PRELIMINARY GEOTECHNICAL EVALUATION LOCATION: Baxter Meadows Subdivision See attached sketch. Bozeman, Montana DRILLED BY: L.Klocke METHOD: 3 1/4"HSA,Manual DATE: 11/10/00 SCALE: 1"=4' Elev. .Depth Symbol Description of Materials BPIF WL qp Remarks 4684.2 0.0 ORGANIC CLAY,low plasticity,with roots and OL humus,black, moist,medium. (Topsoil) 7 682.7 1. I , _ _ _ _ _ _ _ __ _ _ _ __ _ _ SANDY LEAN CLAY, low plasticity,trace roots, CL light olive brown,moist,medium. (Alluvium) 8 b80.7 3. LEAN CLAY with SAND and GRAVEL, low _ _ _ CL plasticity,brown,moist to waterbearing at 4.3',very 11/29/00 678.7 5. stiff. (Alluvium) 25 _� FOORLY GRADED GRAVEL with SAND_,,Fine- to coarse-grained,brown to dark brown, -�; waterbearing,dense to very dense. (Alluvium) 48 SZ While drilling. V ,� 4 1 � 45 'e-y§ 4 GP — 61 2 _2 a- _� sr _1 38/50- 2� . Q. 4660.2 24.0 END OF BORING 50-3^5 t Waterbearing gravels were observed at a depth of 7.5'while drilling. Water down 13.7'with 24'of hollow-stem auger in the ground. o A temporary piezometer was installed in the boring; 10'slotted and 15'riser. On 11/29/00,RPA measured the elevation of 5 groundwater of 4679.9, or a depth of 4.3'. t, N >n d Q 005256 cr z t Geotecbnical 2611 Gabel Road, P. O. Box 80190 Billings,Montana 59108-0190 LOG OF B O R 1 l Phone: (406)652-3930, Fax: (406) 652-3944 rPROJECT: 005256A BORING: $T-4 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED$Y: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/19/01 SCALE: I" = 3` Elev. Depth Symbol Description of Materials BPF WL 4673.6 0.0 QP Remarks OL , , , ORGANIC CLAY, low plasticity,some roots,dark 4672.6 1.0 , , brown,rather dry„rather stiff. (Topsoil) LEAN CLAY,low plasticity,some Sand,trace CL roots, olive brown,rather dry,medium. (Alluvium) 6 4670.1 3.5 LEAN CLAY', low plasticity,some coarse Sand, trace roots, light olive brown,moist,rather soft•:. (Alluvium) CL 5 4667.1 6.5 _ _ . POORLY GRADED GRAVEL with SAND,#-ine- to coarse-grained, brown,waterbearing,medium - An open triangle in th dense to very dense. (Alluvium) 28 water level(WL) GP column indicates the _IM, depth at which Q. groundwater was first observed while drilling. 4663.1 10.5 _ 54 END OF BORING Water down 7'with 9' of hollow-stem auger in the ground. Water not observed immediately after withdrawal of auger. 0 m - a_ F O ri z z z - c� a' N a nns�s�n Geotechnical 2611 Gabel Road, P. 0. Box 80190 L O G OF B O R I N Billings,Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST•5 T GEOTECHNICAL EVALUATION LOCATION: Utility Design Center of westbound lane, see attached sketcl Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE. 9/24/01 SCALE: P =3' Elev. Depth Symbol Description of Materials BPF WL qP Remarks 4690.5 0.0 FILL: 15"of Sandy Gravel surfacing. 4689.2 1. _ _ _ _ _ _... _ — _ __ _ _ __ _ _ _ _ _ _ Bag sample from l'to FILL: Lean Clay, low to medium plasticity,trace 4%n Sand, dark brow ,moist,rather stiff. 4687.0 3.5 LEAN CLAY with SAND,low plasticity,light olive brown,moist,soft to rather stiff. (Alluvium) gp=pocket 3 1/2 penetrometer estimate of unconfined compressive strength, tons per square foot. 6 1 ' CL T t -trace humus at 12 1/2'. i2 t 1/2 4677.0 13.5 POORLY_ _ _ _ _ _GR _ _ ADED GRAVLE with SAND and Gp W SILT, fine- to medium-grained, brown,moist, GM medium dense. (Alluvium) 4675.0 15.5 29 END OF BORING Water not observed with 14'of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 8.5' immediately after withdrawal of auger. 0 a _ 0 Z 'a t? o _ Q ro 0. CJ Geotechnical 2611 Gabel Road, P.O.Box 80190 Billings, Montana 59108-0190 LOG OF $ Q R 1 1 Phone: (406)652-3930, Fax: (406) 652-3944 PROJECT: 005256A BORING: STa6 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/20/01 SCALE: 1"=3' EIev. Depth Symbol Description of Materials BPP W 4672.3 0.0 �1P Remarks ORGANIC CLAY, low to medium plasticity,some i roots, disturbed to 1 1/2',brownish black,rather moist to moist' rather soft to rather stiff, (Topsoil) 4 Ili OL € Ii il 9 i t i 4668.3 4.0 _ _ + LEAN CLAY with SAND,low plant city, trace CE Gravel,olive brown,,wet/waterbearing,rather soft. (Alluvium) q 4666.3 6.0. _ _ POORLY GRADED GRAVEL with SAND and SILT,fine-to coarse-grained,dark brown and black, waterbearing, dense. (Alluvium) 41 GP GM 661.8 10.S _ 50 END OF BORING Water down 4'with 9'of hollow-stem auger in the ground. Water down 4'immediately after withdrawal of auger. 0 P_ F- O U` z z z 0 Q N N d a 005256A Geotechnical 2611 Gabel Road,P. O. Box 80190 LOG O F B O R I N Billings, Montana 59108-0190 Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-7 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S. Shafer METHOD: 3 114"HSA,Manual DATE: 9/19/01 SCALE: V=3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4697.1 0.0 ORGANIC CLAY,low plasticity,some roots, 4696.1 1.0 OL brown,rather dry,_medium. (Topsoil) LEAN CLAY,low plasticity,trace roots,light olive 7 4695.1 2.0 CL brown,rather dry,medium. (Alluvium) SANDY LEAN CLAY,loW plasticity,trace roots, lilight olive brown rather d 6 g dry,medium to rather soft. (Alluvium) CL 5 4690.6 6.5 _ _ _ _ _ __ _ _ _ _ _ _ _ _ SILTY SAND, very fine-to medium-grained, nonplastic,weakly cemented, trace roots,light SM brown,rather dry,medium dense. (Alluvium) 14 r 4688.6 8.5 _ _ _ SANDY LEAN CLAY,low plasticity,light olive CL brown,rather dry,very stiff. (Alluvium) 4686.E 10.5 17 END OF BORING Water not observed with 9'of hollow-stem auger'in the ground. Water not observed to dry cave-in depth of 5.5' immediately after withdrawal of auger. P Q h a U O Z Z QZ J d - U`. Q 41 - N N Q. a 005256A Ar Geotechraical 2611 Gabel Road,P. o.Box 80190 L Q G p F B p R � � Billings,Montana 59108-0190 Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-8 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S. Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/19/01 SCALE: V=T Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4693.6 0.0 ORGANIC CLAY,medium plasticity,some roots, OL dark olive brown,rather dry, soft. (Topsoil) 4692.1 1.5 , _ _ _ __ _ 3 LEAN CLAY, Iow to medium plasticity,trace roots and humus, light olive brown,moist,rather stiff. CL (Alluvium) 9 4689.6 4.0 AN CLAY I zI SAND,low plasticity,trace — — humus,light olive brown,moist to wet,medium to soft. (Alluvium) 7 CL 3 Ir2 4685.1 8.5 low_ � CL LEAN CLAY, plasticity, ht oli ligve brown,wet, very soft. (Alluvium) 4683.1 10.5 o END OF BORING Water not observed with T of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 6` immediately after withdrawal of auger. Waterbearing clays observed at a depth of about 8' while drilling. s m a w n cn z z a a N u' p Ar Geotechnical 2611 Gabel Road, P. 0. Box 80190 LOG OF BORING Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-9 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S. Shafer METHOD: 3 1/4"HSA, Manual DATE:9/19/01 SCALE: V=3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4686.5 0.0 i ORGANIC CLAY, low plasticity, some roots,trace OL Sand, dark brown, moist, medium. (Topsoil) , 7 LEAN CLAY, ON plasticity,trace humus,some Sand, light olive brown, moist, rather.soft. 5 1 CL (Alluvium) 4682.5 4.0 _ TW .t POORLY GRADED GRAVEL.with SAND,ffine- to coarse-grained,brown, moist to waterbearing, 42 dense:to very dense. (Alluvium) GP -waterbearing. 52 � 4678.0 8.5 _ _ _ _ _ _ _ _ _ _ _ SILTY GRAVEL with SAND, fine-to coarse-grained, brown, waterbearing, medium dense. GM (Alluvium) 21 4676.0 10.5 END OF BORING Water down T with T of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 6' immediately after withdrawal of auger. Waterbearing soils observed at a depth of about 7' while drilling. s95 a n,, Geotechnical 2611 Gabel Road, P. O.Box 80190 Billings, Montana 59108-0190 LOG OF BORIN Phone: (406)652-3930, Fax: (406) 652-3944 PROJECT: 005256A BORING: ST-1 Q GEOTECHNICAL EVALUATION LOCATION: Utility Design 8'S of centerline, see attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/24/01 SCALE: 1"=3' Elev. Depth Symbol Description of Materials BPF WL 4697.3 0,0 Remarks 697.0 0.3 , FILL: 1 of AsPlhalt Pavement. _ FILL: Gravelly Lean Clay with Sand,brown,_moist, _ stiff. 13 [4695.3 2.0 Bag sample from 1'to LEAN CLAY,medium plasticity, trace Gravel,olive CL brown, moist,medium. (Alluvium) B 4693.3 4.0 LEAN CLAY,med lump lasticity,olive brown,wet, Wet clays below 4' soft. (Alluvium)CL may tie waterbearing. 3 p 69.0,8 6.5 POORLY GRADED GRAVEL with SAND,Fine-- to coarse-grained,brown, moist, very dense to medium dense. (Alluvium) 53 Q:. GP Q6 686.8 10.5 24 END OF BORING Water not observed with.9'of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 6' immediately after withdrawal of auger. 0 W 0 0 zz z z a 0 Q N - N 6_ d nnt�c�a Am Geotechnical bmik 2611 Gabel Road,P. O.Box 80190 LOG O F B U R I N Billings,Montana 59108-0190 Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-1 1 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/24/01 SCALE: V=3' Elev. Depth Symbol Description of Materials BPF JWLJ qp Remarks 4696.3 0.0 695.9 0.4 M 3 1/2" of Asphalt Pavement. FILL: Sandy Gravel base,fine-to coarse-grained, 94.8 IS trace Clay, dark brown,moist,medium dense. 28 FILL: Lean CIay,medium plasticity,trace Sand, dark brown, f moist rather stiff. lf�lli `I !E 4 2 Z�!!I ilE�7� 692.8 3.5 ` POORLY GRADED GRAVEL with SAND, fine- to coarse-grained, trace Silt:and Cobbles,gray, rather moist to waterbearing at T,very dense. (Alluvium) 53 GP § Sz 80 687.8 8.5 " _ GP - POORLY GRADED GRAVEL with.SAND and 4687.0 9. GM - SILT, fine-to coarse-grained, some Cobbles, brown, 50 for "set waterbearin ve dense. Alluvium END OF BORING Water down 8.2'with 9' of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 5 1/2' immediately after withdrawal of auger. Waterbearing soils observed at a depth of about 7' while drilling. s m a a z z z c� a' 0 a m a a 005256A cr_�� Haar 1 of Geotechnical 2611 Gabe!Road,P. o. Box 80190 LOG O F B O R ! N Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-12 GEOTECHNICAL EVALUATION LOCATION: Utility Design 3'S of staked location,see attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/19/01 SCALE: V=3' EIev. Depth Symbol Description of Materials BPF WL qp Remarks 4671.1 0.0 ORGANIC CLAY, low plasticity, some roots, brownish black,rather moist. (Topsoil) OL i S i ' 4668.1 3.0 ; i _ 3 LEAN'CLAY with SAND,med'iurrn plasticity, trace Saturated below 31. humus, gray,wet,soft. (Alluvium) CL 3 3/4 4665.1 6.0 _ _ _ _ SILTY SAND,one-grained,nonplastic,dark brown, 4664.1 T SM waterbearing. (Alluvium) GP - POORLY GRADED GRAVEL with SAND and SILT, fine-to medium-grained,dark gray, , 24 4662.6 8.5. GM _ waterbearing,medium dense to dense. (Alluvium) CLAYEY GRAVEL with SAND,, Iow plasticity, fine-to medium-grained,waterbearing,medium GC dense. (Alluvium) 23 4660.1 11.0 _ _ POORLY GRADED GRAVEL with SAND and SILT, fine-to medium-grained, trace humus,dark brown,waterbearing,medium dense to dense. GP (Alluvium) 20 - GM - 4655.6 15.5 -trace Clay at 15'. 38 END OF BORING Water down 6'with 14'of hollow-stem auger in the ground. Water down 7'immediately after withdrawal of auger, s m a 0 0 z z a co 4 v> - N N a.. Cf nns�sFn Geotechnical Aw 2611 Gabel Road, P. O. Box 80190 LOG O F B O R 1 N Billings, Montana 59108-0190 Phone: (406) 652-3930, Fax: (406) 652-3944 PROJECT: 005256A BORING: ST-13A GEOTECHNICAL EVALUATION LOCATION: Utility Design 15'S of staked location, see attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S, Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/20/01 SCALE: 1"=3' Elev. Depth Symbol Description of Materials BPF JWLJ qp Remarks 4668.9 0.0 ORGANIC CLAY,low to medium plasticity, some roots,black,rather dry to moist,medium to rather oL ' soft. (Topsoil) f 7 Possible artesian groundwater 4666.4 2.5 ; conditions. LEAN CLAY with SAND,low plasticity, trace zrt to Saturated below 2 1/2'. CL humus and roots,grayish brown,.soft. (Alluvium) 64.9 4.0 _ _ _ Tw SILTY CLAY with SAND,slightly plastic, trace CL humus, gray,waterbearing,soft. (Alluviumn) 3 pia ML 4662.4 6.5 _ _ _ _ _ _ _ _ ,� POORLY GRADED GRAVEL with SAND,fine- to coarse-grained, dark brown, waterbearing, GP medium dense. (Alluvium) 26 4660.4 8.5 _ _ _ _ POORLY GRADED GRAVEL with SAND and SILT,fine-to coarse-grained,trace Cobbles, dark brown,waterbearing, dense to very dense. (Alluvium) 45 GP GM -some Clay at 12 1/2'. 45 4654.0 14.9 50-5" END OF BORING Water down T with 14'of hollow-stem auger in the ground. Water down 3.5'immediately after withdrawal of auger. 0 co o ' 0 c� z z z 3 CL Q N 005?56A __. ., . Geotechnical 2611 Gabel Road, F. 0.Box 80190 � p G p F g p R l r Billings, Montana 59108-0190 Phone: (406) 652-39302 Fax: (406) 652-3944 PROJECT: 005256A BORING: ST-14 GEOTECHNICAL EVALUATION LOCATION: Utility Design 99'S and 38'W of ST-12,see attached sketch Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S. Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/20/0I SCALE: 1"= 3' EIev. Depth Symbol Description of Materials 13PF WL qp Remarks 4670.2 0.0 OL ; ; ORGANIC CLAY,low plasticity, dark brown, 4669.2 1.0 rather dry,stiff (Topsoil) LEAN CLAY with SAND, low plasticity, trace salts, light olive brown,rather dry,stiff to rather CL stiff. (Alluvium) 9 j 4666.7 3.5 SANDY LEAN CLAY,, Iow plasticity,olive brown, moist to:rather wet to waterbearing below.4 1/2', Q rather soft. (Alluvium) - 5 E CL -same Gravel below 7'. 662.7 7.5 POORLY GRADED GRAVEL with SAND and 5110 in - SILT, fine-to coarse-grained, trace Cobbles, dark GP brown,waterbearing, medium dense to very dense. GM - (Alluvium) 10.5 69 END OF BORITVG Water down 6.2'with 9'of hollow-stem auger in the ground. Water down 4.5'immediately after withdrawal of auger. Lq 0 0 cz — z z z d a n. a ane*),A n Geotechnical 2611 Gabel Road, P. 0. Box 80190 LOG OF B O R I N Billings,Montana 59108-0190 Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-15 - GEOTECHNICAL EVALUATION LOCATION: Utility Design 275'E and 150'N of ST-12, see attached Baxter Meadows Subdivision sketch. Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4"IISA,Manual DATE: 9/20/01 SCALE: V=3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4675.4 0.0 ORGANIC CLAY, low plasticity,some roots,dark brown, rather dry to moist,medium to rather soft. (Topsoil) 5 OL ' 3 ' 3 1 3 1 671.9 3.5 ; ; _ _ _ _ _ _ _ _ _ _ LEAN CLAY,.low to medium plasticity., trace roots, olive brown mottled to greenish°gray,wet, rather soft. (Alluvium) CL s v2 668.9 6.5 _ _ _ _ _ _ __ Q �, POORLY GRADED GRAVEL with SAND,one- _ -J'* to coarse-grained, brown,waterbearing,dense to -,- very dense. (Alluvium) 43 GP - .g 64.9 10.5 76 END OF BORING Waterbearing soils observed at a depth of 6 1/2' while drilling. 0 4 r 0 C9 z z z a' 6 Q (D - N 4 O 0nc'1rCA _ , Aft Geotechnical bow 2611 Gabel Road,P. O.Box 80190 Billings,Montana 59108-0190 LOG OF BORIP Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-1 6A GEOTECHNICAL EVALUATION LOCATION: Utility Design 39'S and 18'E of staked location,see attache, Baxter Meadows Subdivision sketch. Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/25101 SCALE: 1"=3` Elev, Depth Symbol Description of Materials BPF W 4680.2 0.0 Remarks E3 ! FILL: 12"of Sandy Gravel surfacing. 4679.2 1.0 � ; ORGANIC CLAY, low soft. (Topsoil) plasticity,black, wet,rather Bag sample from 1'tc r ; 4, OL i � 4 676.7 3.5 LEAN CLAY, low to medium plasticity,.trace Sand; Wet clays below 3 1/2 CL dark gray, wet,soft. (Alluvium) maybe waterbearing, 3 112 4674.2 6:0 LEAN CLAY with SAND, Iow plasticity, gray, wet,' soft to rather soft. (Alluvium) 3 112 CL 10.5 4 1/4 END OF BORING Water not observed with 9'of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 3.4' immediately after withdrawal of auger. s m a C- n z CY z c� S a 4 m N a 005256A Geotecbnical 2611 Gabel Road, P. 0.Box 80190 LOG O F B O R I N Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: S7-17 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRJLLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/19/01 SCALE: V= 3' Elev. Depth Symbol . Description of Materials BPF JWL qp Remarks 4680.9 0.0 1- ORGANIC CLAY, low plasticity,some roots, dark OL brown, rather dry, rather soft. (Topsoil) 4679.4 1.5 4_ LEAN CLAY,low to medium plasticity, trace roots, olive brown,rather dry,medium. (Alluvium) b CL 8 4674.4 6.5 POORLY GRADED GRAVEL with SAND, fine- to coarse-grained,brown,moist to waterbearing at 9 - 1/2', dense. (Alluvium) 32 GP 4670.4 10.5 49 END OF BORING Water down 9.5'with T of hollow-stem auger in the ground, Water not observed to dry cave-in depth of 5' immediately after withdrawal of auger. Q z 3 0. c� s a — N a C! Geotechnical OW 2611 Gabel Road,P. o. Box 80190 LOG O F B O R ( � Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406) 652-3944 PROJECT: 005256A 77BORING: ST-18 GEOTECHNICAL EVALUATIONTION: Utility Design ttached sketch, Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/19/01 SCALE: V = 3' Elev. Depth Symbol Description of Materials BPF WL yp Remarks 4681.1 0.0 ORGANIC CLAY, low plasticity,some roots,dark OL i ' brown, rather dry, rather soft. (Topsoil) 4679.6 1.5 S _ _ _ __ _ _ LEAN CLAY, low plasticity, trace humus and roots, dark olive brown, rather moist, medium. (Alluvium) CL 7 i 4677.6 3.5 LEAN CLAY,law plasticity,trace humus and Gravel, light olive brown,wet to waterbearing at 61, soft. (Alluvium) CL 2 4674.E 6.5 _ : RA SP POORLY GDED SAND with CLAW and GRAVEL, fine-to coarse-grained,slightly plastic, so 4673.1 8.0 SC brown,waterbearing, very dense. (Alluvium) - POORLY GRADED GRAVEL with SAND,fine- to coarse-grained,brown, waterbearing,very dense. Gp (Alluvium) 4670.6 10.5 S9 END OF BORING Water down T with 9' of hollow-stem auger in the ground. Water down 6'immediately after withdrawal of auger. s a 0 Z Z z — 3 0 a N Y1 Q Geotechnical Elk 2611 Gabel Road, P. 0. Box 80190 LOG OF BORIN Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-19 - GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/20/01 SCALE: 1"=3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4683.6 0.0 ORGANIC CLAY,Iow plasticity,some roots, dark brownish black,rather dry to moist,medium to OL rather soft. (Topsoil) i r1 4681.1 2.5 _ _ __ _ _ _ _ _ LEAN CLAY with SAND,low plasticity, trace roots, dark olive brown to light olive brown,moist to waterbearing at 4',rather soft. (Alluvium) CL 4 in •4677.1 6.5 _ _ _ _ - - - -- -- POORLY GRADED GRAVEL with SAND and SILT, fine-to coarse-grained,dark brown, waterbearing,dense. (Alluvium) so GP GM 4673.11 10.5 32 END OF BORING Water down 4.5'with 9'of hollow-stem auger in the ground. Water down 4'immediately after withdrawal of auger. s m a F 0 Z z z 3 'a o t n - u7 N N a �ff Geotechnical 99I66II UMIN9Im'lYYIMYNSV R F 2611 Gabel Road, P. O. Box&0I90 LOG O F B O R I P Billings, Montana 59108-0190 Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: S '-20 GEOTECBMCAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE; 9/20/01 SCALE: 1" =3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4684.0 0.0 ORGANIC CLAY,low plasticity,some roots,dark brown,rather dry to moist,rather soft. (Topsoil) F II 5 Bag sample from 1'tc OL s ; 4% I ( I 4 II 4680.0 4.0 _ LEAN CTAY, low plasticity,Iightolive brown;wet, very soft. (Alluvium) CL wH/1 467&0 6.0 -,�iPOORLYGRADED GRAVEL with SAND,fne- to coarse-grained, brown,waterbaering,dense. (Alluvium) ,�. 40 GP $ 4673.5 10.5 _ 33 END OF BORING Water down 6'with 9'of hollow-stem auger in the ground. Water down 6'immediately after withdrawal of auger. 0 m - P_ F Q Z z - 5 a' c? n N 0. a nnc�cF n Geotechnical 2611 Gabel Road, P. O.Box 80190 LOG OF BORIN Billings,Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-21 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/19/01 SCALE: 1"=3' Elev. Depth Symbol Description of Materials BPF WLJ qp Remarks 4686.3 0.0 ORGANIC CLAY, low plasticity,trace roots,dark OL brown,rather moist,rather soft. (Topsoil) 5 84.8 1.5 _ _ _ __ _ _ _ _ _ _ _ __ _ _ _ LEAN CLAY with SAND, low plasticity,trace roots, dark olive brown,rather moist,rather soft. CL (Alluvium) 5 682.8 3.5 _ _ __ _ _ _ _ _ __ _ _ __ _ _ _ SANDY LEAN CLAY,low plasticity,light.olive brown, moist,rather stiff. (Alluvium) CL I� 4680.3 6.0 -trace Gravel below 5 1/2'. _ POORLY GRADED GRAVEL with SAND and SILT, fine- to coarse-grained,trace Cobbles,brown, moist to waterbearing at 8 1/2', dense to very dense. (Alluvium) . 34 GP 675.8 10.5 52 END OF BORING Water down 8.5'with 9'of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 3' immediately after withdrawal of auger. 0 0 0 P Z Z Z d - U', a 4 n N-- N a HAF Geotechnical 2611 Gabel Road, P. O.Box 80190 Billings,Montana 59108-0I90 LOG OF B O R I h Phone: (406) 652-3930, Fax: {406)652-3944 PROJECT: 005256A BORING: ' ST-22A GEOTECHNICAL EVALUATION LOCATION: Utility Design 29'E of staked location, see attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 I/4"HSA,Manual DATE: 9/25/01 SCALE: 1" =3' Elev. Depth Symbol Description of Materials BPF WL 4689.8 0.0 4P Remarks FILL: Silty Gravel with Sand,fine-to `;r coarse-grained, slightly plastic, some Cobbles and 46883 1.5 ; ;�' Boulders,brown,rather dry. ! ORGANIC CLAY, low plasticity,some roots,dark i brown,moist to wet, rather soft. (Buried Topsoil) OL , 5 0 li 685.8 4.0 LEAN CLAY,low plasticity, olive brown, wet, soft. (Alluvium) CL 2 0 682.8 7.0 .�, SiLTY GRAVEL with SAND, #-me-to � _ � — Q coarse-grained,nonplastic,brown,waterbearing, 42 dense to medium dense. (Alluvium) GM 15 0 0 32 4676.3 13.5 _ _ _ CLAYEY GRAVEL with SAND, fine-to CC coarse-grained, low plasticity,brown, waterbearing, medium dense. (Alluvium) 4674.3 15.5 24 END OF BORING Water down 9.4'with 14'of hollow-stem auger in the ground. Water down 7.3'immediately after withdrawal of auger. o W 0 0 z z z g CL c� 0 H a G7 005256A Geotechnical 2611 Gabel Road, P. 0. Box 80190 LOG O. F B 0 R I N Billings,Montana 59108-0190 Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-23 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/19/01 SCALE: 1"=3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4692.5 0.0 OL ORGANIC CLAY, low plasticity,some roots,dark 4691.5 1.0 gz/, brown, rather dry, rather stiff. (Topsoil) LEAN CLAY with SAND, low plasticity,trace _ - 514 roots and pinholes, dark olive brown to light olive CL brown, rather dry to moist,rather soft. (Alluvium) s 4689.0 3.5 _ _ _ _ _ __ _ SANDY LEAN CLAY, low paasticity,.trace roots and humus,olive brown, wet;:very:soft. (Alluvium) CL i 46860 6.5 POORLY GRADED GRAVEL with SAND,fine- ,x to coarse-grained, trace Silt,dark brown,moist to waterbearing at 9 1/2',medium dense to dense. 24 - (Alluvium) GP - _ -more Silt at 9 1/2% 4682.0 10.5 ? 39 END OF BORING Waterbearing soils observed at a depth of about 9 1/2'while drilling. 0 0 h O cfl 2 Z 4z J a' L? 0 N Q SitGeotechnical 2611 Gabel Road, P, O.Box 80190 L p G p F B O R i N Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: $T-24 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S. Shafer METHOD: 3 1/4"HSA,Manual DATE:r' SCALE V 3' Elev. Depth Symbol Description of Materials Remarks 4695.7 0.0 ORGANIC CLAY, low plasticity,some roots, dark OL brown,rather dry, rather stiff. (Topsoil) 4694.2 1.5 _ _ _ _ _ _ _ LEAN CLAY with SAND,low plasticity, trace roots,olive brown,rather dry, very stiff. (Alluvium) CL 18 4692.2 3.5 BEAN CLAY witli SAND,Iow.plasticity, olive brown,wet,soft. (Alluvium) 3 3/4 CL -trace Gravel at 7 1/2'. -waterbearing at 8. 3 SZ 1/2 4687.2 8.5 _ POORLY GRADED GRAVEL with SAND and GP CLAY, fine to coarse-grained,non to slightly GC plastic, dark brown, waterbearing,dense. 4685.2 10.5 - (Alluvium) 39 END OF BORING Water down 8'with 9'of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 6' immediately after withdrawal of auger. 0 a 0 z z z a 0 N N 4 d An57SF A AV Geotechnical imp Ilk 2611 Gabel Road, P. O. Box 80190 LOG OF B O R I N Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-25 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/24/01 SCALE: V = 3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4695.4 0.0 94.9 0.5 OL th L ORGANIC CLAY, low plasticity,some roots, dark brown,rather dryyrather soft.�ToRsail) CL GRAVELLY LEAN CLAY with SAND,low 22 4693.4 2.0 plasticity,trace humus,roots,Cobbles and boulders, brown rather dry,ver�r stiff._�Alluviurn) _ _ _ _ GC CLAYEY GRAVEL with SAND, fine-to 44 coarse-grained, low plasticity,trace roots,brown, 691.9 3.5 rather moist dense. Alluvium POORLY GRADED GRAVEL with.SILT and Sz GP SAND, fine-to coarse-grained,brown; GM waterbearing,dense. (Alluvium) 42 4689.4 6.0 CLAYEY GRAVEL with SAND, fine-to coarse-grained, low plasticity,brown,waterbearing, very dense to medium dense. (Alluvium) 54 28 GC 80 50-3" F ,-9- 15.5 END OF BORING Water down 4'with 14'of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 4' immediately after withdrawal of auger. s W a - 0 0 Z Z 5 S m - N h a a nns?u,A 1 n Geotechnical 2611 Gabel Road, P. O. Box SOIgo LOG O F B Q R I [V Billings, Montana 59108=0190 Phone: (406)652-3930, Fax: (406) 652-3944 PROJECT: 005256A BORING: ST-26A GEOTECHMCAL EVALUATION LOCATION: Utility Design 10'N of staked location, see attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S. Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/19/01 SCALE: 1"=3' Elev, Depth Symbol Description of Materials BPF WL qp Remarks 4698.7 0.0 OL ; , ORGANIC CLAY, low to medium plasticity,trace 697.7 1.0 ; , Sand, some roots, dark brown,rather dry,rather stiff. To soil t �_L _Z _ _ _ _ — __ ... - - - _ - -/ 696.7 2.0 CL LEAN CLAY,medium plasticity,trace Sand and roots, olive brown, rather dry,rather stiff. f CL 1 Alluvium L_ _'_) _ __ - _ _ - - - --- - - - -� 2 LEAN CLAY,medium plasticity,trace Sand,light 4695.2 3.5 olive brown rather dg,soft_Alluvium LEAN.CLAY with SAND, low plasticity, olive brown,:wet,soft. (Alluvium) 3 1/2 CL 3 p 4690.2 8.5 1' POORLY GRADED GRAVEL with SAND,one- — to coarse-grained,trace Silt,brown, moist to waterbearing at 11 1/2', dense to very dense. (Alluvium) 41 -47; ► 58 4683.2 15.5 56 END OF BORING Water down 11.5'with 14'of hollow-stern auger in the ground. Water not observed to dry cave-in depth of 9' immediately after withdrawal of auger. s m n z z 5 CL O a N h Q. a Geotechnical 111=11-M- RR 2611 Gabel Road,P. O. Box 80190 L o G OF B o R I N Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 _ PROJECT: 005256A BORING: ST-27A GEOTECHNICAL EVALUATION LOCATION: Utility Design ION of staked location, see attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/18/0I SCALE: 1"=3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4698.7 0.0 ORGANIC CLAY,low plasticity,black, moist, rather soft. (Topsoil) a OL II 4696.2 2.5 _ _ _ __ _ _ _ _ WH LEAN CLAY,low plasticity,trace Sand, dark olive lia brown, wet to waterbearing at 4 1/2,very soft. CL (Alluvium) SZ 693.7 5.0 _ _ _ _ _ _ _ _ _ _ _ _ _ lib CLAYEY SAN ,fine-to coarse-grained, low, plasticity,trace Gravel,olive brown,waterbearing, Sc medium dense. (Alluvium) 4691.7 7.0 _ _ _ _ _ _ _ _ _ _ _ — SILTY GRAVEL with SAND, fine-to GM coarse-grained,dark brown,waterbearing, dense. 35 4690.2 8.5 (Alluvium) POORLY GRADED GRAVEL with SAND, fine- to coarse-grained, trace Silt,grayish brown, GP waterbearing,dense. (Alluvium) 4688.2 10.5 wl END OF BORING Water down 5'with 9'of hollow-stem auger in the ground. Water down 4.5'immediately after withdrawal of auger. p 0 F- 0 (7 z z z a 0 4 N N C% Geotechnical 2611 Gabel Road, P. O.Box 80190 LOG O F B Q R i N Billings,Montana 59108-0190 Phone: (406)652-3930, Fax: (406) 652-3944 PROJECT: 005256A BORING: T-28A GEOTECHNICAL EVALUATION LOCATION: Utility Design 30N and 25'E of staked location, see attachec Baxter Meadows Subdivision sketch. Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: '9/25/0I SCALE: I" =3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4704.0 0.0 FILL: 18" of Gravel surfacing, contains Cobbles and Boulders. 4702.5 1.5 Bag sample from 1'to '+;+ FILL: Lean Clay with SAND low plasticity,trace 4'• 4701.5 2.5 ; Gravel,olive brown and dark brown,moist, medium. 3/4 LEAN CLAY with SAND, low plasticity,olive brown,wet to waterbearing at 4,medium to very soft. (Alluvium) Q CL t 0 4697.5 6.5 _ _ _ POORLY GRADED GRAVEL with SAND, fine- to coarse-grained,trace Silt,grayish black, waterbearing,dense to very dense. (Alluvium044 0 01 GP -Cobbles below 10'. 17/48 Q- - 50-6" 4690.5 13.5 POORLY GRADED GRAVEL wsth SAND andW GP CLAY, fine-to coarse-grained, low plasticity, dark GC = brown,waterbearing,very dense. (Alluvium) 4688.5 15.5 69 END OF BORING Water down I F with 14'of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 6.8' immediately after withdrawal of auger. Waterbearing soils observed at a depth of about 4' while drilling. 0 m a Z Z z 3 a- a N Q- d nn��s�e 4ft AV Geotechnical 2611 Gabel Road,P. O. Box 80190 LOG O F B O R I N Billings,Montana 59108-0190 Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-29 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S. Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/21/01 SCALE: V=3' Elev. I Depth Symbol Description of Materials BPF �WL yp Remarks 4702.0 0.0 ORGANIC CLAY, low to medium plasticity, some roots,dark brownish black,rather moist,stiff to OL rather stiff. (Topsoil) is 4699.5 2.5 ; E _ _ 6J19 POORLY GRADED GRAVEL with SAND and Q SILT,fine-to coarse-grained,brown,moist to - waterbearing at 3, dense. (Alluvium) GP _ GM 41 4695.5 6.5 _ _ _ _ _ _ _ _ _ _ SILTY GRAVEL with SAND,fine-to — — — — — , coarse-grained,brown, waterbearing,medium dense. (Alluvium) 23 GM $ 4691.5 10.5 19 END OF BORING Water down 5'with 9'of hollow-stem auger in the ground. Water down 3'immediately after withdrawal of auger. Water not observed to wet cave-in depth of 3.4' immediately after withdrawal of auger. s m a 0 z z - z a 0 N N Q p 005256A rr_�n Haar I of Geotechnical RNSL 2611 Gabel Road,P. o. Box 80190 LOG 0 F B O R I N Billings, Montana 59108�-0190 Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-30 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY.- S• Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/20/01 SCALD: 1" =3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4707.4 0.0 s ; ORGANIC CLAY, low plasticity, some roots,dark OL t brown, rather dry. (Topsoil) 705.9 1.5 _ _ __ 6 SILTY GRAVEL_ with_ $ coarse-grained,nonplastic,trace roots,brown,rather GM may, very dense. (Alluvium) 61 703.9 3.5 �r _ _ _ POORLY GRADED GRAVEL with SAND, foie- I GP to coarse-grained, brown,moist,very dense. (Alluvium) 701.9 5.5 62 POORLY GRADED GRAVEL with SAND,fne- - :to coarse-grained,brown,waterbearing,very dense. (Alluvium) 56 GPC-i 696.9 10.5 _ 80 s END OF BORING Water down 5.5'with 9'of hollow-stems auger in the ground. Water not encountered to dry cave-in depth of 2.5' immediately after withdrawal of auger. Q a a g z z a' 0 N 0. 0 Geotechnical 2611 Gabe[Road,P. O.Box 80190 LOG OF BORIN Billings,Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-31 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S. Shafer METHOD: 3 I/4"HSA,Manual DATE: 9/21/01 SCALE: I" =3' Elev. Depth Symbol Description of Materials BPF WL qp Remarks 4718.I 0.0 ORGANIC CLAY, low plasticity,some roots, dark OL brown,rather dry, medium. (Topsoil) a 4716.6 1.5 _ _ _ __ _ _ _ _ _ _ __ _ _ __ _ _ _ LEAN CLAY, low plasticity, trace roots and humus, light olive brown, moist to wet,soft to very soft. (Alluvium) 2 1 CL � U 4712.1 6.0 _ _ POORLY GRADED GRAVEL with-SILT and SAND, Pule-to coarse-grained,nonelastic,brown, GP moist, very dense. (Alluvium) GM 66 4709.E 8.5 _ S POORLY GRADED GRAVEL with SAND,fine- GP - to coarse-grained,brown, waterbearing,very dense. (Alluvium) _ 4�15a 5" 707.8 END OF BORING Water down 8.5'with 9'of hollow-stem auger in the ground. Water not observed to cave-in depth of 7.5' immediately after withdrawal of auger. 0 m - 0 0 0 z z z a - c? 0 Q io — N�T N N a Cf Afthur Geotechnical baw 2611 Gabel Road, P. o. Box 80190 L Q G Q F B Q R ) � Billings,Montana 59108-0194 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-32 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S. Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/2I/01 SCALE: 1" =3' Elev. Depth Symbol Description of Materials BPp I W LJ 14717.2 0,0 9p Remarks ORGANIC CLAY,medium plasticity,dark brown, OL ; , rather dry, stiff (Topsoil) 4715.7 1.5 is POORLY GRADED SAND with GRAVEL,fne- Sp to coarse=grained, trace Silt, dark brown, rather 4714.2 3.0 moist,dense. (Alluvium) 33 POORLY GRADED GRAVEL withSAND and SILT, fine-to coarse-grained, trace Cobbles, dark brown, waterbearing,very dense. (Alluvium) 70 GI' GM 47 7 4706.7 10.5 44 END OF BORING Water down 9'with 9'of hollow-stem auger in the ground. Water not observed to wet cave-in depth of 3.3' immediately after withdrawal of auger. 0 m a 0 z z 0 S N a a , nn c�rr. Geotechnical Elk 2611 Gabel Road,P. 0. Box 80190 LOG OF BORIN Billings, Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-33 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/21/01 SCALE: 1" =3' Elev. I Depth Symbol Description of Materials BPF WL qp Remarks 4710.5 0.0 ORGANIC CLAY, low plasticity,some roots,black, OL moist,medium.. (Topsoil) 4709.0 1.5 ; I _ _ $ LEAN CLAY with SAND,low plasticity,olive CL brown, wet,medium. (Alluvium) 6 1/4 4707.5 3.0 POORLY GRADED GRAVEL with SAND, fine- to coarse-grained,trace Silt,.dark brown,moist to -,, waterbearing at 5', medium dense to dense.-: (Alluvium) 26 - GP 38 4702.0 8.5 _ _ _ _ _ _ _ CLAYEY GRAVEL with SAND,fine-to coarse-grained,low plasticity,brown,waterbearing, GC dense. (Alluvium) 4700.0 10.5 32 END OF BORING Water down 5'with 9'of hollow-stem auger in the ground. Water not observed to wet cave-in depth of 4.5' immediately after withdrawal of auger. a 0 d 0 z z z a 0 4 fn N WAr Geotechnical 2611 Gabel Road,P. 0.Box 80190 Billings, Montana 59108-0190 LOG OF BORII Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-34A GEOTECHNICAL EVALUATION LOCATION: Utility Design 40N of staked location, see attached sketch. Baxter Meadows Subdivision Bozeman, Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/24/01 SCALE: I"=3' Elev. Depth Symbol Description of Materials BPF WL 4729.6 0.0 Remarks OL ; ; ORGANIC CLAY, low plasticity, some roots,dark 4728.6 1.0 brown,moist,medium. (Topsoil) CL LEAN CLAY with SAND,low plasticity,trace ¢ E �� Bag sample from 1'to 4727.6 2.0 roots;dark olive brown,moist,medium. 4'. SANDY LEAN CLAY,ICW plastici —Hight olive CL brown, wet, soft. (Alluvium) 3 4726.1 3.5 _ LEAN CLAY,Iow plasticity, trace 9a rid,ivet to waterbearing at 4',very soft. (Alluvium) Sz CL - i 4723 A 6.5 _ POORLY GRADED GRAVEL with SAND, fine- to coarse-grained, trace silt,dark brown, waterbearing, medium dense to dense. (Alluvium) 28 GP 46 ,g 35 IMP 4716.1 13.5 POORLY GRADED GRAVEI✓with SAND and GP SILT, fine-to coarse-grained, trace Cobbles,dark GM - brown, waterbearing, very dense. (Alluvium) 4714.I 15.5 66 END OF BORING Water down 7'with 14'of hollow-stem auger in the ground. Water down 6.7 immediately after withdrawal of auger. Waterbearing soils observed at a depth of about 4 s 1/2'while drilling. m Q z z z 0. - L] 4 N Vl ti d Geotechnical 2611 Gabel Road, P. O. Box 80190 � 0 0 o F B o � � Iy Billings,Montana 59108-0190 Phone: (406)652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-35 - GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4-HSA,Manual DATE: 9/21/01 SCALE: V= 3' Elev, Depth Symbol Description of Materials BPF JWL qp Remarks 4729.0 0.0 OL � ; ORGANIC CLAY,Iow plasticity,some roots, dark 4728.0 1.0 ; ; ; brown, rather dry,rather soft. (Topsoil) LEAN CLAY,low plait city,trace roots, light alive 9 4727.0 2.0 CL brown, rather dry,rather stiff. (Alluvium) PC}ORLY GRADED GRAVEL with SILT and GP SAND, fine-to coarse-grained,brown,moist, dense. 38 GM (Alluvium) 4725.0 4.0 ,* POORLY GRADED GRAVEL with SARE, fine- ,, to coarse-grained, brown,moist to waterbearing at GP 5.4',very dense. (Alluvium) 54 �Z 4723.0 6.0 POORLY GRADED GRAVEL with SILT-and SAND,fine-to coarse-grained,brown, waterbearing, dense. (Alluvium) 33 GP ` GM 4718.5 10.5 30 END OF BORING Water down 5.4'with 9'of hollow-stern auger in the ground. Water not observed to dry cave-in depth of 3.3' immediately after withdrawal of auger. 0 W a a - 0 z z z a c 0 Q m N N a U • 14 ►.Geotechnical 2611 Gabel Road, P. 0. Box 80190 Billings,Montana 59108-0190 LOG OF B 0 R [ N Phone: (406) 652-3930, Fax: (406)652-3944 PROJECT: 005256A BORING: ST-36A GEOTECEMCAL EVALUATION LOCATION; Utility Design I I N and GE of staked location,see attached Baxter Meadows Subdivision sketch. Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/21/01 Depth Symbol SCALE: 1"= 3' Elev. De P Ym Description of Materials BPF W 4732.2 0.0 Remarks ORGANIC CLAY, low to medium plasticity,some OL roots,trace Gravel,dark brown,rather moist, rather 4730.7 1.S ; , stiff. (Topsoil) 9 LEAN CLAY with SAND,medium plasticity,olive I 2.5 CL brown,rather moist, very stiff. (Alluvium) _ POORLY GRADED GRAVEL witliSAND, Fine- W 10i19 .,, to coarse-grained,trace Cobbles and Silt,gray, rather moist to waterbearing at 7 1/2',very dense. (Alluvium) 75 GP �. 59 .a -s. - 70 4721.2 11.0 CLAYEY GRAVEL with SAND, fine-to — — coarse-grained,low plasticity,dark brown, waterbearing, medium dense to very dense. (Alluvium) 50 SC -some Cobbles below 14'. 716.7 15.5 99 END OF BORING Water down 7.5'with 14'of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 2.4' immediately after withdrawal of auger. 0 0 Cj 0 Z Z z - g d 0 Q Q W IV R d % Geotechnical I 2611 Gabel Road, P. O. Box 80190 LOG OF B O R ! N Billings,Montana 59108-0190 ,.1e: (406)652-3930, Fax: (406) 652-3944 _ &OJECT: 005256A BORING: ST-37 GEOTECHNICAL EVALUATION LOCATION: Utility Design See attached sketch. Baxter Meadows Subdivision Bozeman,Montana DRILLED BY: S.Shafer METHOD: 3 1/4"HSA,Manual DATE: 9/25/01 SCALE: 1" 3' Elev, 1 Depth Symbol Description of Materials BPF WL qp Remarks 4736.4 0.0 ORGANIC CLAY, low plasticity,dark brown, 4735.4 1.0 OL rather dry, very stiff. (Topsoil) 9/12 LEAN CLAY with SAND,medium plasticity, trace roots, olive brown,rather dry,very stiff. (Alluvium) CL 17 732.9 3.5 SANDY.LEAN CLAY,.low plasticity,trace roots, light.olive brown, rather dry,stiff. (:Alluvium) CL 13 4730.4 6.0 _ _ _ _ _ POORLY GRAADED GRAVET.witg AND and SILT, fine-to coarse-grained,trace cobbles,gray, rather dry, very dense to dense. (Alluvium) _ ss GP - GM 725.9 10.5 - 42 END OF BORING Water not observed with 9'of hollow-stem auger in the ground. Water not observed to dry cave-in depth of 3' immediately after withdrawal of auger. ST-12 ST-13A .. L� BAXTER MEADOWS ST-14 ST-16A P.U.D. ST4 S 5 PHASE SB TEST BORE LOCATIONS . a ST s SEE SOILS REPORT BY SK GEOTECHNICAL ST-5 -" AND PECCIA&ASSC.ENGINEERING ST-17 T-19 ANTICIPATED FOOTING CONDITIONS mu� T-20 a AT THE BORING LOCATIONS: I PHASE 2B CONDITION 1-UNDISTURBED GRAVELS -3 a„Q P E n CONDITION 2-UNDISTURBED CLAYS ST•22A CONDITION 3-SUBEXCAVATE/BACKFILL4 z a epp EE T-2 P E P 3 ]E rpi in e HASE F ......M,.„ ST-1 ST-26 29 S S T-331 31 PHASE q ST•3 „M soo ST- MON ST-36A ST-37 Scale instals in F" North