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HomeMy WebLinkAboutPZ - Geotech Report SITE Post Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC Dan Torfin December 5, 2024 DRB Investments, LLC Page 1 of 37 1157 N. Summerbrook Avenue, Suite100 File 24802-A Meridian, Idaho 83642 Re: Geotechnical Recommendation Report Pine 43 Development -Vacant Parcels E Pine Avenue & N Webb Avenue Meridian, Idaho Dan: Based upon eleven new test pits and lab testing of sampled soils, a review of our prior work at your Pine 43 Development, and the submitted masterplan, the subject site is acceptable for the proposed mixed-use commercial-residential development. This report includes our recommendations for design and construction future phases of this project. We appreciate this opportunity to be of service. Should you have any questions or require additional information, please contact our office at your convenience. Respectfully submitted; SITE Consulting, LLC Bob J. Arnold, PE S%pNAL 0 12/05/24 0 OF e J. Aft, a Geotechnical Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC EXECUTIVE SUMMARY • Clearing of the majority of organic materials will require removal of the upper two to six inches of topsoil. Since tree and large brush roots may extend as deep as two feet, the depth of removal should be adjusted in the field. Lean clay soil was identified in numerous test pits, but no fat (expansive) clay was observed or sampled. • Historical aerial photos available on Google Earth indicate that prior residences were present in the northwest corner of the northwest parcel and in the West End of the southwest parcel. During earthwork operations it is to be confirmed that foundations and slab on grade concrete were removed and that any basement or crawl space was properly backfilled. • Any encountered well or septic system is to be closed as per IDWR and IDEA requirements. Septic tank and drain field removal is required. • Subgrade surfaces and each lift of structural fill are to be compacted to 95% of the maximum dry density as determined by ASTM D698, "Standard Proctor." The project geotechnical engineer can waive compaction testing of the subgrade surface based upon acceptable proof rolling inspection. • The proposed commercial and residential buildings may be supported on conventional, continuous, and isolated pad foundations. For foundation founded on native cemented silt sand soil a design bearing pressure of 2000 psf is recommended. For foundations founded atop deep sand and gravel soils a design bearing pressure of 3000 psf is recommended. Shallow foundations are not to bear on clay soils without site specific approval by a geotechnical engineer. Based upon the recommendations provide herein being followed, settlements are not expected to exceed one-inch total and % inch differential. • ISPWC %" Crushed Aggregate Base or 3" Uncrushed Aggregate Subbase is recommended for structural filling beneath foundations and HMA and PPC pavements. • A minimum of four inches of ISPWC %" Crushed Aggregate Base and eight inches of ISPWC 3" Uncrushed Subbase are recommended below interior slab on grade concrete. These materials are to be compacted to the requirements of structural fill. This is recommended to support commercial slab on grade floors and prevent frost heaves. • Based upon an R-Value of R=20 and a traffic Index of TI=6 (residential street), a pavement section of 2.5" of HMA/4.0" of 3/4" base /10.0" of Subbase is recommended for all interior driveways and parking lots. • SITE recommends a design percolation rate of P=3 inches per hour with a drain time of less than 24 hours. Perc testing in test pits prior to construction is recommended. N a Geotechnica/Services/Soil Testing&Inspection Services SITE Post Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TABLE OF CONTENTS EXECUTIVE SUMMARY ........................................................................................2 INTRODUCTION.....................................................................................................4 Purpose and Scope....................................................................................4 Authorization ..............................................................................................5 Warranty and Limitations...........................................................................5 BACKGROUND & RESEARCH .............................................................................6 FieldInvestigation......................................................................................6 Observed Conditions .................................................................................6 CONSTRUCTION RECOMMENDATIONS.............................................................7 FoundationSystem ....................................................................................7 Foundation Excavation ..............................................................................7 StructuralFill ..............................................................................................8 Siesemic Considerations ..........................................................................8 Foundation and Utility Excavation............................................................8 Retaining Wall Design................................................................................9 Interior Slab on Grade Concrete ...............................................................9 Exterior Rigid Pavements..........................................................................10 Flexible Pavement Section ........................................................................10 Stormwater Disposal..................................................................................10 Testing & inspection ..................................................................................10 GeneralComments.....................................................................................11 APPENDIX..............................................................................................................12 M a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC INTRODUCTION PURPOSE AND SCOPE This report presents the results of a Geotechnical Evaluation performed on a property consisting of multiple tax parcels located near East Pine Avenue and North Webb Avenue, in Meridian, Idaho. For reference, SITE has broken the development into four areas based upon the above intersection. The website landprodata.com provided the reported data. Property Parcel # Address Acres NW S1108234001 1800 E Pine Avenue 7.5 NW S1105234051 E Pine Avenue 2.8 NE S1108244538 E Pine Avenue 4.7 SE S1108325455 E Pine Avenue 7.2 SW S1108325470 E Pine Avenue 7.6 TOTAL ACRES 30 A As indicated historical aerial photos available on Google Earth reveal the property had two former residential structures that have been demolished. These photos reveal that the majority of the land was pastureland or farmland prior to development. Pine avenue was extended through the property in 2007, and Webb Avenue was extended south of Pine in 2011 and to the north in 2018. Plans provided by the client indicate this development will include both commercial / retail facilities and multi-family housing facilities. Both basement level and outside land level parking are planned. The Masterplan provided is in the appendix. Only private driveways are planned. It is assumed that larger commercial buildings and apartment buildings will include slab on grade floors. Smaller structures may have crawlspaces. Strip and isolated foundations and both concrete and HMA pavements are planned. d" a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC The purpose of this investigation was to evaluate the subsurface soil conditions and provide recommendations for building foundations and civil construction. The field investigation included subsurface exploration by means of test pits excavated with a client provided excavator/ operator. During excavation soils samples were gathered, bagged, labelled, and returned to our in-house soil laboratory for visual classification and random testing of selected samples. Classifications and laboratory test results are reported on the Test Pit Logs in the Appendix. After the field investigation and laboratory testing were completed, all available field and laboratory test data were reviewed, the provided design information was evaluated, and this report was prepared. This report summarizes our findings, conclusions, and recommendations regarding the geotechnical aspects of the project. AUTHORIZATION Authorization to proceed and the use of the recommendations provided herein indicate the client's acceptance of the scope of work, warranty, limitations, and general conditions provided herein and within any prior geotechnical proposal from SITE. WARRANTY AND LIMITATIONS The exploration and evaluation of subsurface conditions documented herein is considered sufficient to form a basis for the recommended foundation design. The recommendations provided are based on the available soil information and preliminary design details either assumed or furnished by the client. It is warranted that these recommendations have been promulgated after being prepared in accordance with locally accepted professional engineering and geotechnical engineering practice. No other warranties are implied or expressed. Ln a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC RESEARCH & BACKGROUND FIELD INVESTIGATION SITE Consulting has previously provided geotechnical engineering services during numerous prior phases of the PINE 43 development. Our prior reports were reviewed as a part of this investigation. At the time of our field investigation the surface was firm and stable, allowing total access with selected sampling equipment. During the exploration, samples were recovered from the excavator bucket and spoil piles. These samples were sealed in plastic bags and returned to the soil laboratories for evaluation and analysis. Eleven Test Pits were advanced to depths of twelve to eighteen feet below the existing ground surface. Test pits were all terminated in sloughing sand and gravel materials which prevented deeper exploration. OBSERVED CONDITIONS Test Pits were varied with layers of clay, silt, sand, and cemented soils present above the sand and gravel of the Whitney Gravel Terrace. Lean (but not fat) clay soil was observed and sampled in numerous locations. As indicated, sand and gravel (pitrun) were encountered in the test pits at between four and eight feet deep. The upper two feet of the native pitrun was observed to be cemented in numerous locations. Any stormwater injection system must penetrate the cemented top of the sand and gravel strata. Groundwater was not encountered. These test pits were excavated in September 2023 when groundwater should be approaching peak values. Well logs for two surrounding properties indicate the groundwater is greater than ten to fourteen feet deep on properties north and southwest of the subject site. a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC CONSTRUCTION RECOMMENDATIONS FOUNDATION SYSTEM The proposed buildings, both commercial and multi-family may all be supported on conventional, continuous foundations with isolated pads used for concentrated point loads. Both slab on grade floors and conventional crawlspaces are acceptable. Foundations can be founded on the shallow, native lean clay or silt / sand soil and utilize 2000 psf bearing capacity for foundation design. For basement foundations or founded atop the native pitrun materials or atop 1.5 feet of structural fill a design bearing capacity of 3000 psf is recommended. If used, structural fill is to be ISPWC 1/4" Crushed Aggregate Base or ISPWC 3" Uncrushed Aggregate Subbase. The foundation or structural fill supporting subgrade is to be recompacted and inspected for rejectable clay soil, stability, and proper compaction prior to form or fill placement. Compaction testing to confirm compaction of foundation supporting structural fill is required. As per Meridian City Code (attached), all foundations are to be founded a minimum of twenty-four inches below the adjacent grade for frost protection. FOUNDATION EXCAVATION After foundations have been excavated to design grade, it is recommended that a geotechnical engineer or his representative inspect the structural fill or foundation- bearing surface to confirm conditions are similar to those documented herein. Inspection should verify that fat clay is not present, the native subgrade to support concrete foundations or structural fill is free of organic material and soft areas, the fill is the proper depth and compaction. If clay soil, organics, wet or soft areas are still present, deeper excavation will be required. If indicated, the depth of over excavation is to be determined in the field, at the time of construction. Imported granular structural fill is to be used to backfill any over excavation. If foundations are to be founded on compacted structural fill, the depth, stability, and proper compaction of the fill is also to be confirmed by inspection and compaction testing performed by the project geotechnical engineer or retained testing firm. Structural fill placed beneath foundations must extend laterally outside the supported foundation a distance equal to the depth of fill. a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC STRUCTURAL FILL Structural fill shall be an imported granular material meeting the base or subbase requirements of ISPWC. Structural fill is to be free from cobble larger than four inches, organic matter, and other deleterious substances. Fines shall be non-plastic. Structural fill should be placed in uniform lifts; moisture conditioned as necessary and compacted to a minimum of 95% of the maximum dry density as determined by ASTM Test Method D-698, "Standard Proctor" with appropriate rock correction. Compaction of structural fills is to be verified by density testing and construction observations. One compaction test per lift for every 5,000 square feet of building pad, one for each 100' of foundation or utility trench, and for every three isolated pads is recommended. For mass grading, one test per lift per lot is recommended. A qualified engineer or testing firm should monitor fill placement to ensure the work is performed in accordance with these recommendations. The inspector must also confirm that the foundation supporting soils, and any additional structural fill is free of clay, soft areas, deflections, or excessively wet areas. If encountered, such areas are to be removed and replaced with dry, more stable, structural fill materials. It is noted that subgrade surfaces and pavement section base layers may pass compaction test requirements and still be unacceptable if pumping, rutting, or movement when loading is present. SEISMIC CONSIDERATIONS Soils on site are classed as site class D in accordance with chapter 20 of American Society of Civil Engineers (ASCE) publication ASCE/SEI 7-16. Structures constructed on this site should be designed per IBC requirements for such a seismic classification. Seismic Design Values are included in the Appendix. FOUNDATION AND UTILITY EXCAVATION Within the overburden soils, shallow excavations that do not exceed three feet in depth may be constructed with side slopes approaching vertical. Below this depth, it is recommended that slopes not exceed a vertical to horizontal ratio of one to one. Severe sloughing of excavation walls that extend into the free flowing sand and gravel soils should be anticipated. Shoring or benching may be required for any work below four feet deep. This information is provided for planning purposes. It is our opinion that maintaining safe working conditions is the responsibility of the contractor. Jobsite conditions such as soil moisture content, weather condition, earth movements, and equipment type, and operation can all affect slope or bank stability. All excavations should be sloped, braced, or shored as required by state and/or federal requirements. 00 a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC RETAINING WALL DESIGN Retaining walls should be designed to resist lateral pressures from adjacent soils and surcharge loads applied behind the walls. Shallow lean clay and silt / sand soil or Imported ISPWC base and subbase are acceptable for backfilling of foundation walls. Based upon these soils, we recommend using the following lateral pressures for the design of retaining walls. These values are for drained conditions. Lateral Pressure and Condition Equivalent Fluid Pressure (Compacted Fill) (pcf) Active Case, Drained 45 At-Rest Case, Drained 60 In addition to the lateral soil pressure given above, any retaining walls should be designed to support any design live load, such as vehicle and construction surcharges to be supported by the wall backfill. If construction vehicles are required to operate within ten feet of a wall, supplemental pressures will be induced and should be considered through design. A coefficient of friction of 0.40 on native soils is recommended. INTERIOR SLAB ON GRADE CONCRETE Care must be taken so that all excavations below slab on grade concrete are properly backfilled in accordance with the structural fill recommendations outlined herein. This is critical where a slab will extend over utility trenches or retaining wall backfill. Trenches and wall backfill areas are to be filled in lifts and benched each lift so that fill is not placed against a vertical soil face greater than three feet tall. Testing is to confirm that compaction has been achieved. Areas of excessive yielding should be over-excavated and backfilled with structural fill. Slab on grade concrete should be placed atop six inches of granular base material. ISPWC 1/4" base is recommended directly below the concrete. Non-fat clay, native soils can be used as structural fill six inches below the top of completed building pads. The mat and slab supporting fill shall be compacted to the requirement for structural fill. Proper joints should be provided at the junctions of the slab and foundation system so that independent movement can occur without causing damage. a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC EXTERIOR RIGID PAVEMENTS For exterior concrete intended to support vehicular traffic the total thickness of granular base and subbase must be at least ten inches in thickness. Portland cement concrete pavement is better able to resist damage caused by turning and stopping trucks and by large point loads such as parked semi-trailers and trash dumpsters and is therefore recommended in these locations. FLEXIBLE PAVEMENT SECTION Based upon an R-Value of R=8 and a traffic Index of TI=6 (residential street), the following section is recommended for all driveways and parking areas. ACHD will require thicker sections for exterior road classified as collectors and should be contacted concerning matching the existing pavement sections within their right of ways. Pavement Layer Auto Parking Areas Asphaltic Concrete 2.5" Base Coarse (%" minus) 4.0" Subbase (Pitrun) 10.0" The subgrade below all future pavements is to be inspected for soft or deflecting areas prior to the placement of the pavement section. Materials meeting the requirements of ISPWC are required for any work within this project. Storm Water It is recommended that storm runoff be directed away from all open excavations and not be allowed to puddle on subgrade soils. SITE recommends a design percolation rate of P=3 inches per hour with a drain time of less than 24 hours. Perc testing to confirm this value at the time of construction is recommended. It is noted that this recommended design value is based upon numerous field tests performed with prior phases of the PINE 43 development. Inspection & Testing A qualified engineer or his representative should monitor fill placement to ensure the work is performed in accordance with these recommendations. For mass filling density testing shall be performed on each lift of compacted fill for every 5000 square feet of surface area. Trench backfill and right of ways are to be tested to ACHD / ISPWC requirements. It is noted that structural fill can pass compaction tests and still be unacceptable if pumping, rutting, or deflecting under vehicle or foot traffic. a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC General Comments Testing and inspection services are recommended herein. Proper quality control during construction is required to confirm materials and methods and thereby obtain a desirable finished product. Monitoring and testing should also be performed to verify suitability of materials used for structural fills and to confirm proper demolition, subgrade grubbing, subgrade stability, and proper placement and compaction of fills. Any deviations from the herein described subsurface conditions must be brought to the attention of this consultant. This report has been prepared for the exclusive use of the client and their retained design consultants. Findings and recommendations within this report are for specific application to the proposed construction described herein and apply only to the property identified. Appendix Follows a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC APPENDIX Project Masterplans-Page 15 Location Map-Page 16 Parcel information-Page 17 Pine 43-NW-Page 16 Pine 43-NE-Page 23 Pine 43-SE-Page 26 Pine 43-SW-Page 30 Soil Log Legend / Abbreviations & Acronyms-Page 33 Pavement Section-Page 34 Seismic Design Values-Page 35 Meridian City Code-Page 36 IDWR Well Logs-Page 37 N rl a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC PROJECT MASTERPLANS =l.IiilLl ll�l i. �; iphnse�.,'I -jZ bjj III .. LL -7H1.H — -flSrIHH1411111111 -- ""rmr r.i�mn�nminm 1. mml rm 1. 'I IIIIIm �� - If7RIf7Rn `.L e r,o ��� I � o�n e 111 lull lull 111 lull lln DO �} .-111 11 lull 111 11 111 llu 11111 ..- o rn o III II III IIfll ni iiin mi niiILILW1Wlf- - r r , M Supplied by client. bz a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC LOCATION MAP - jr ml%. —ztI I ! :III o.• � �.�III # 4 17 5� _ _ .J�t. ir �•p Landprodataxom a Geotechnical Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC PARCEL INFO Parcel Number:S1108234011 Parcel Number:S1108234051 Parcel Nu:52,027,30 8244538 Information Information mation Parcel S110823-4011 parcel S110823-4051 Parcel108244538 Primary Owner ❑REINVESTMENTS LLC primary Owner ❑REINVESTMENTS LLC Primary OwEINVESTMENTS LLC Second Owner Second Owner Second Ow Property Address 1800 EPINE AVE Property Address EPINE AVE Property AdPINEAVE Total Value $2,706,800 Total Value $1,417,800 Total Value ,027,300Subdivision 3N 1F 08 Subdivision 3N 1E 08 Subdivision 1E 08Zoning C-G Zoning C-G ZoningGAcres{Tax} 7532 Acres{Tax} 2.818 Acres(Tax) 701Acres{Calculated} 7533 Acres{Calculated} 2.828 Acres{Calc698Legal 1 PAR#4011 OF SW4NW4 Legal 1 PAR#4050 OF S2NW4 Legal 1R#4538 OF NW4Legal 2 SEC 8 3N 1 E Legal2 SEC 8 3N 1 E Legal 2C 08 3N 1 E 'M:3' 4 • i �.,�din a�:_ � 11` '•*�a F I T-W ti �• L• - s 5 IN of y f, • t. h' —' • Irk dgL*' 4 � r .e _ Awnha_ - Parcel Number:S1108325470 Parcel Number:S1108325456 Information Information Parcel S1108325470 Parcel S1108325455 Primary Owner ❑RB INVESTMENTS LLC Primary Owner ❑RB INVESTMENTS LLC Second Owner Second Owner Property Address E PINE AVE Property Address E PINE AVE Total Value $2,720,400 Total Value $11,700 Subdivision 3N1E08 Subdivision 3N1E08 Zoning C-G Zoning C-G Acres{Tax} 7.57 Acres{Tax} 7.162 Acres{Calculated}7.663 Acres{Calculated} 7.171 Legal 1 PAR#5470 @ N SIDE NW4SW Legal 1 PAR#5455 OF NE4 SW4 Legal SEC 8 3N 1E Legal 2 SEC 08 3N 1E Ln Landprodata.com Ion a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC PINE 43 - NW O..TP-1 _ r: TP-3 1 pwJ bA Geotechnicai Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-1 File #: 24802-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-NW Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" I 1/2" I 3/8" I #4 I # 10 I #40 I #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Silty, Sand 2-6" Rootzone/Organic layer 1.0-3.0 Brown, Moist, Firm, Silty, Sand (SM) R-Value Sample (wasTP8 in field labels) R= 42 2.0 100 1 96 1 89 1 77 1 56 1 34 I 23.6 112.3 I N P I N P 3.0-6.0 Brown/Tan, Moist, Firm, Cemented, Sand & Silt 6.0-18.0 Brown/Tan, Moist, Firm, Sand, Gravel, Cobble 18.0 Bottom of Excavation @ 18.0' No Ground Water Encountered Monitoring Well in Place e—� b a4 a. Geotechnica/Services/Soil Testing&Inspection Services I •i�iiiiiiiii�iiii�iiiiiii� ---------- ---- : 11 11 all • • be • r • • 11 • E • m _ m Resistance Value Test —300 P.S-I. hL _. • SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-2 File #: 24802-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-NW Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" I 1/2" I 3/8" I #4 I # 10 I #40 I #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Sand & Silt 2-6" Rootzone/Organic layer 1.0-3.0 Brown, Moist, Firm, Silt, Sand with Gravel 3.0-4.0 Brown/Tan, Moist, Firm, Cemented, Sand & Silt 4.0-18.0 Brown/Tan, Moist, Firm, Sand, Gravel, Cobble 18.0 Bottom of Excavation @ 18.0' No Ground Water Encountered Monitoring Well in Place dN e—� b a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-3 File #: 24802-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-NW Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" I 1/2" I 3/8" I #4 I # 10 I #40 I #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Sand & Silt 2-6" Rootzone/Organic layer 1.0-3.0 Brown/Tan, Moist, Firm, Cemented, Sand & Silt 3.0-13.0 Brown/Tan, Moist, Firm, Sand, Gravel, Cobble 13.0 Bottom of Excavation @ 13.0' No Ground Water Encountered Monitoring Well in Place O N b a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC PINE 43 - NE io -77 TP2wo L. � yrLJ .F+ N a Geotechnical Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-1 File #: 24082-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-NE Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" 1/2" 3/8" #4 # 10 #40 #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Sand & Silt 2-4" Organic Layer/ Rootzone 1.0-3.0 Brown/Tan, Moist, Firm, Sandy, Silt (ML) 2.0 1 1 100 1 99 1 98 1 89 79 70.9 15.9 30 24 I 3.0-5.0 Brown/Tan, Moist, Firm, Silty, Sand with gravel (SM) 4.OI 100 89 1 87 1 74 1 72 1 58 1 36 1 25.1 11.1 I NP I NP I 5.0-8.0 Brown/Red, Moist, Firm, Silty, Sand (SM) 6.0 1 100 1 95 1 94 1 93 85 49 34.1 17.9 I N P I N P I 8.0-13.0 Brown/Tan, Moist, Firm, Silt, Sand & Gravel Cemented in upper two feet. 13.0 Bottom of Excavation @ 13.0' No Ground Water Encountered Monitoring Well in Place N N b a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-2 File #: 24802-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-NW Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" 1/2" 3/8" #4 # 10 #40 #100 #200 I %M LL PI 0.0-1.0 Brown, Moist, Firm, Sand, Clay, Silt 4-6" Rootzone/Organic Layer 1.0-3.0 Brown, Moist, Firm, Silty Sand (SM) 2.0 100 1 95 1 91 1 85 1 75 1 52 1 34 1 25.21 24.0 1 43 1 38 1 3.0-6.0 Brown/Tan, Moist, Firm, Cemented, Sand & Silt 6.0-12.0 Brown/Tan, Moist, Firm, Sand, Gravel, Cobble 12.0 Bottom of Excavation @ 12.0' No Ground Water Encountered Monitoring Well in Place M N b a4 a. Geotechnical Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC PINE 43 - SE M. —' ■ l a mw TP-1 r x# Y� . k • f I I ■ Iff TP-3 L : i �. _ �•_#4,R . fie r -low 4hNLr*. 'A- ji r -. J. - - _ N a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-1 File #: 24802-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-SE Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" I 1/2" I 3/8" I #4 I # 10 I #40 I #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Sand, Clay/Silt 4-6" Rootzone/Organic Layer 1.0-2.0 Brown/Red, Moist, Firm, Sandy, Lean Clay (CL) 1.5 100 99 94 1 88 71 58 51.4 1 19.5 1 38 1 26 1 2.0-4.0 Brown/Tan, Moist, Firm, Weakly Cemented, Silty, Sand (SM) 3.0 1 100 1 88 1 73 1 59 1 32 1 17 1 12.2 1 15.9 1 NP 1 NP 4.0-13.0 Brown/Tan, Moist, Firm, Sand, Gravel, Cobble 13.0 Bottom of Excavation @ 13.0' No Ground Water Encountered Monitoring Well in Place Ln N b a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-2 File #: 24802-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-SE Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" I 1/2" I 3/8" I #4 I # 10 I #40 I #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Sand & Silt 4-6" Rootzone/Organic Layer 1.0-3.0 Brown, Moist, Firm, Silty, Sand (SM) 2.0 100 87 1 70 1 55 1 36 1 26 1 21.7 1 22.7 1 N P I N P 1 3.0-5.0 Brown/Red, Moist, Firm, Cemented, Sand & Silt 5.0-9.0 Brown/Red, Moist, Firm, Cemented, Sand, Gravel, Cobble 9.0-13.0 Brown/Tan, Moist, Firm, Sand, Gravel, Cobble 13.0 Bottom of Excavation @ 13.0' No Ground Water Encountered Monitoring Well in Place N b a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-3 File #: 24082-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-SE Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" I 1/2" I 3/8" I #4 I # 10 I #40 I #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Sand, Clay/Silt 4-6" Rootzone/Organic Layer 1.0-3.0 Brown, Moist, Firm, Sand & Silt 3.0-5.0 Brown/Tan, Moist, Firm, Silty, Sand (SM) 4.0 1 100 1 92 1 83 1 72 1 48 1 34 27.4 1 27.2 1 N P I N P 5.0-8.0 Brown/Red, Moist, Firm, Cemented, Sand, Gravel, Silt 8.0-13.0 Brown/Tan, Moist, Firm, Sand, Gravel, Cobble 13.0 Bottom of Excavation @ 13.0' No Ground Water Encountered Monitoring Well in Place N a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC PINE 43 - SW Opp { `TP-2 r `h TP-3 47 Eg 00 N Cu on ca a Geotechnical Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-1 File #: 24802-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-SW Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" I 1/2" I 3/8" I #4 I # 10 I #40 I #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Sand, Clay/Silt 2-6" Rootzone/Organic layer 1.0-4.0 Brown, Moist, Firm, Sandy, Lean Clay (CL) 3.0 1 100 1 99 1 88 72 1 64.8 1 15.5 1 38 1 25 1 4.0-8.0 Brown/Red, Moist, Firm, Sand, Silt & Clay 8.0-13.0 Brown/Red, Moist, Firm, Sand, Silt 13.0 Bottom of Excavation @ 13.0' No Ground Water Encountered Monitoring Well in Place d� N b a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-2 File #: 24802-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-SW Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" I 1/2" I 3/8" I #4 I # 10 I #40 I #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Sand, Clay/Silt 2-6" Rootzone/Organic layer 1.0-3.0 Brown, Moist, Firm, Cemented, Sand & Silt 3.0-5.0 Red/Tan, Moist, Firm, Sand & Silt 5.0-13.0 Brown/Tan, Moist, Firm, Sand, Gravel, Cobble Top two feet cemented. 13.0 Bottom of Excavation @ 13.0' No Ground Water Encountered Monitoring Well in Place O M b a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC TEST PIT LOG Test Pit: TP-3 File #: 24802-A Client: DRB Investments, LLC Date Excavated: 09/08/23 Project: Pine 43-SW Excavated By: Client Location: See Aerial Photo Logged By: J. Meusch-SITE DEPTH SOILS DESCRIPTION (feet) 3/4" I 1/2" I 3/8" I #4 I # 10 I #40 I #100 #200 %M I LL I PI 0.0-1.0 Brown, Moist, Firm, Sand, Clay/Silt 2-6" Rootzone/Organic layer 1.0-3.0 Brown, Moist, Firm, Cemented, Sand & Silt 3.0-5.0 Red/Tan, Moist, Firm, Sand, Silt, Clay 5.0-13.0 Brown/Tan, Moist, Firm, Sand, Gravel, Cobble 13.0 Bottom of Excavation @ 13.0' No Ground Water Encountered Monitoring Well in Place r-I M b a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITE Post Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC SOIL LOG LEGEND UNIFIED SOIL CLASSIFICATION SYSTEM (ASTM STANDARD TEST METHOD D 2487 FOR CLASSIFICATION OF SOIL FOR ENGINEERING PURPOSES MAJOR DIVISIONS FI TYPICAL DESCRIPTIONS GRAVEL& < 5%- GW Well-graded gravel, gravel-sand mixture, little or no fines. 200 GRAVELLY GP Poorly graded gravel, gravel sand mixture, little or no fines SOILS 5-12% -200 GM Silty gravel,gravel-sand-silt mixtures COARSE <50%-4 GRAINED >12%-200 GC Clayey gravel, gravel-sand-clay mixtures SOILS <50%- SW Well-graded sand, gravelly sand, little or no fines. 200 SAND& < 5%-200 SANDY SP Poorly graded sand, gravelly sand, little or no fines SOILS SM Silty sand, sand-silt mixtures >50%-4 >12%-200 SC Clayey sand,sand-clay mixtures El Inorganic silt and very fine sand, rock flour, silty or clayey SILTS& INORGANIC fine sand or cla a silt with slight plasticit CLAYS CL Lean clay-low to medium plasticity, gravelly, sandy, or silty FINE LL< 50% clay GRAINED ORGANIC OL Organic silt and organic silty clay of low plasticity SOILS >50%- MHr Elastic silt, micaceous or diatomaceous fine sand or silty 200 SILTS& INORGANIC 1 11 soil. CLAYS CH 11 Fat clay-high plasticity LL>50% ORGANIC iF OH Organic clay-med. or high plasticity:organic silt HIGHLY ORGANIC SOILS PT Peat, humus,swamp soil with high organic content ABBREVIATIONS AND ACRONYMS ASTM American Society for Testing and Materials IBC International Building Code ISPWC Idaho Standard for Public Works Construction ITD Idaho Transportation Department NP Non-Plastic PCC Portland Cement Concrete TP Test Pit USCS Unified Soil Classification System PCf Pounds per Cubic Foot Psf Pounds per Square Foot tsf Tons per Square Foot sf/f Pounds per Square Foot / Foot N M a Geotechnical Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC PAVMENT SECTION DESIGN SECTION CALCULATIONS (R-Value Method) Project: PINE 43 File No.: 24802-A Pine &Webb Calc By: B. Arnold Client: DMB Date: 12/05/24 Design Thickness Equation: T = 0.0032 (TI) (100-R)(12) = GE (inches) T= Design Thickness TI = Traffic Index = 6 By Agency GE = Gravel Equivalent R = R-Value = 20 Soil Test GE= 18.9Inches ACHD HMA, 3/4" Base and Aggregate Subbase Actual Thickness Equivalent Thickness HMA Thickness = 2.5 Inches HMA= 5.0 Inches 3/4" Base Thickness = 4.0 Inches RBE= 4.4 Inches Calculated Aggregate Subbase Thickness Equation: Subbase Thickness=SB=GE-HMA-RBE SB= 9.5 Inches CALCULATED DESIGN SECTION HMA= 2.5 inches 3/4" Base = 4.0 inches Subbase = 10.0 inches RECOMMENDED DESIGN SECTION HMA = 2.5 inches 3/4" BASE = 4.0 inches SUBBASE = 10.0 inches R=20 is maximum R-Value used by SITE for Commericial Design M a4 a. Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC SEISMIC DESIGN VALUES East Pine Avenue & North Webb Avenue, Meridian, Idaho 83642 Date 12/05/2024 Design Code Reference Document ASCE7-16 Risk Category II Site Class D - Default (See Section 11.4.3) Type Value Description Ss 0.292 MCER ground motion. (for 0.2 second period) S1 0.106 MCER ground motion. (for 1.0s period) Sens 0.457 Site-modified spectral acceleration value Sm, 0.253 Site-modified spectral acceleration value Sos 0.305 Numeric seismic design value at 0.2 second SA Sol 0.169 Numeric seismic design value at 1.0 second SA Type Value Description SDC C Seismic design category Fa 1.567 Site amplification factor at 0.2 second F„ 2.388 ISite amplification factor at 1.0 second PGA 0.129 MCEG peak ground acceleration FPGA 1.542 Site amplification factor at PGA PGAm 0.199 Site modified peak ground acceleration TL 6 Long-period transition period in seconds SsRT 0.292 Probabilistic risk-targeted ground motion. (0.2 second) SsUH 0.321 Factored uniform-hazard (2% probability of exceedance in 50 years) spectral acceleration SsD 1.5 Factored deterministic acceleration value. (0.2 second) S1 RT 0.106 Probabilistic risk-targeted ground motion. (1.0 second) S1 UH 0.116 Factored uniform-hazard (2% probability of exceedance in 50 years) spectral acceleration. S1 D 0.6 Factored deterministic acceleration value. (1.0 second) PGAd 0.5 Factored deterministic acceleration value. (Peak Ground Acceleration) PGAuH 0.129 Uniform-hazard (2% probability of exceedance in 50 years) Peak Ground Acceleration CRs 0.908 iMapped value of the risk coefficient at short periods CRC 0.917 IMapped value of the risk coefficient at a period of 1 s Cv 10.883 lVertical coefficient https://www.seismicmaps.org/ M a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC MERIDIAN CITY CODE 2018 IBC Basic Design Criteria Amendments to IBC code GROUND SNOW LOAD: 20 psf. Design roof load shall not be less than a uniform snow load of 25 psf. WIND DESIGN SPEED (mph): 115 mph for risk occupancy II or less. 120 mph for risk occupancy III or greater. WIND DESIGN TOPOGRAPHIC EFFECTS: No, as per Section R301.2.1.5 SEISMIC DESIGN CATEGORY: C WEATHERING: Severe FROST LINE DEPTH: 24 inches. LO M a Geotechnica/Services/Soil Testing&Inspection Services SITEPost Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC IDWR WELL LOG 1410 East Pine — SW of subject site Drilled Nov 2018 Static Groundwater 14' Deep 7-7 IDAHO DEPARTMENT OF WATER RESOURCES WELL DRILLER'S REPORT 1.WELL r i3 ma-o B•1 U 0 3 tf 12.STATlr VYATCM LVEL aMd WELL TESTS; 0^Ir^a 13 - cr,ia. CkM find wmwww4wdwgd lltJ 14' Slric*m -imd lnl 14' Wpkn nyhlw.i.rtg.wXC 4Y[4eraerN.l'Yl mbamFmmlgkmp.�56 't.GwNER Newberry ERI.Eralrimis LLLP otyrri6r acaam ptrrl Top 911 n9 Ntsne NwiteTry 61Gerpr4es LLLP xaat.ar: 14r!'r tna.n0. 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'Slpdsr"of KI pw Orllhrr and Al oparabar>ff ra wWwn-& s[rbe rat•trak g.NW NIA 1� M tli to f� a Geotechnica/Services/Soi/Testing&/nspection Services SITE Post Office Box 190537 - Boise, Idaho 83719 site.consulting.idaho@gmail.com - 208-440-6276 CONSULTING, LLC IDWR WELL LOG 2075 Fairview Avenue — North of subject site Drilled Aug 2001 Static Groundwater 10' Deep Fw Z10' IDAHOCEPARTMENTOFWATER RESOURCES pmmuis,pny WELL DRILLER'S REPORT Inwemoof TWD — I-WELL TA43M D A _19-114_IM DRILLING KRIAIT NO. it WELL TESTS: Lm: omv IRw4 No —— — 'uz ; ,F kw b# lrugae 2. OWNER .0 In. �.d.w .p Nlrpw� �o- 3. LOCATION Of WELL Itx litgel dmeripUm: wnr Qum.r dr m mne/W! ---- 3aelth ��d robslhn ITu9I sgrw +nw+,�lnen 7dYL4A ____ 2"psrNarr!rFmu,W 12. LiT NOLOGIC LM: {Duccibe rapalrt or AbahUahnehtl If1ler �,,, Fia- , frkiarl.Y:LiYo�,WWr ii..F F1A i Ti1+f111.1 F M - TYF.__ py Rpe - Earl w Mea1 p CL '}! X,%-j. 1 W1.4 Ira Lai: Lerpf . 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PERFORATI�NSIgCNEEHB _ wpaTFyLN f'EW�li _ $our.TIG#, _I- Goq&.&M 6ep1h Ilrr#ok.ooi1) Gale: SlUd __ CompikUEd fr. le 9pR x,. n.,.a. a.mw ..Ir.l Gp'^I lJpr ❑ 1 M MLLER'S CERTIFicALTPON CT r LrIYi{�cmdi 1h.I�yhik�pr�kn?�nyr 6ml oyghmfur 6wicbrib ioiin a dd mm it U I_ _I'°F 11 r'r iil'-'.�1 l'ITI 1, r. v], ;%c �x iannimny N®.. - .. ..z Pew AMA&A M $TATIG WATER LEVEL OR AI YESIA19 PRESSURE:JLJ--Ft. 0" "no Arbown prenwe . hb, F'Fm �k _41A1 -S22-+q�i f]Wh lllm mn Lintw4W _ _fi GgLen:b4 i"vss part 4r .rd Pa IplrQl G6Nr �En: p _1 dr11P 41 Oh O.M =ORNFRf1 WXTE CD--V T-D VriA-TF ;B0JKES M Nothing Follows b a Geotechnical Services/Soil Testing&Inspection Services