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RED ROCK CONSULTING PEDOLOGICAL & GEOLOGICAL SOIL SURVEY EC 1394Q US 56 OVER BEAVER RIVER CIMARRON COUNTY, OKLAHOMA 28658(04) Prepared For: Professional Engineering Consultants 10017 S. Pennsylvania Avenue Oklahoma City, OK. 73159 Attention: Mr. Jim Moore, PE Prepared By: Red Rock Consulting, LLC P.O. Box 30591 Edmond, Oklahoma 73003 (405) 562-3328 May 14, 2014 Project No. 14039 RED ROCK CONSULTING May 14, 2014 Professional Engineering Consultants 10017 S. Pennsylvania Avenue Oklahoma City, OK. 73159 Attention: Mr. Jim Moore, PE Re : Pedological & Geological Soil Survey EC 1394Q US 56 over Beaver River Cimarron County, Oklahoma 28658(04) RRC Project No. 14039 Dear Mr. Moore, We are pleased to submit herewith this report entitled "Pedological & Geological Soil Survey, EC 13940, US 56 over Beaver River, Cimarron, County, Oklahoma, 28658(04 )". In an effort to provide a more environmentally friendly service, this report has been printed double-sided on 100% recycled paper. Kristi K. Bumpas, PE, LEED AP James B. Nevels, Jr, PhD, PE Project Engineer Geotechnical Engineering Consultant Oklahoma PE No. 23667 Oklahoma PE No. 9282 PO. BOX 30591 · EDMOND. OK 73003 • 405-562- 3328 • WWW.REDROCKGEO.COM PEDOLOGICAL & GEOLOGICAL SOIL SURVEY EC 1394Q US 56 OVER BEAVER RIVER CIMARRON COUNTY, OKLAHOMA 28658(04) PROJECT NO. 14039 1.0 INTRODUCTION .................................................................................................................... 3 1.1 Project Authorization ........................................................................................................... 3 1.2 Qualifications ...................................................................................................................... 3 1.2 Proposed Construction ....................................................................................................... 3 2.0 PEDOLOGICAL and GEOLOGICAL SOIL SURVEY .............................................................. 5 2.1 Site Conditions .................................................................................................................... 5 2.2 Subsurface Conditions ........................................................................................................ 5 2.3 Field Investigation ............................................................................................................... 5 2.4 Soil Taxonomy .................................................................................................................... 6 2.5 Soil Description ................................................................................................................... 6 2.6 Geologic Statement ............................................................................................................ 7 2.7 Soil Series Station Extents .................................................................................................. 8 3.0 LABORATORY TESTING and TEST DATA RESULTS.......................................................... 9 3.1 Laboratory Test Procedures and Test Results .................................................................... 9 4.0 SHRINKAGE and SWELL FACTORS .................................................................................. 10 4.1 Estimation of Shrinkage and Swell Factors ....................................................................... 10 5.0 CONSTRUCTION CONSIDERATIONS ................................................................................ 11 5.1 Soil Parameter Considerations and Compacted Fill Requirements .................................. 11 5.2 Other Factors .................................................................................................................... 12 5.3 Cut Section Considerations............................................................................................... 12 5.4 Groundwater Observations ............................................................................................... 13 6.0 RECOMMENDATIONS ......................................................................................................... 14 7.0 GENERAL COMMENTS ....................................................................................................... 15 TABLES TABLE 1 – General Comments on the Soil Series Investigated TABLE 2 – Soil Series Taxonomic Class and Comments TABLE 3 – Soil Taxonomy TABLE 4 – Soil Series Station Extents TABLE 5 – Shrinkage/Swell Factors for Earthwork Excavation TABLE 6 – Cut Section Considerations TABLE 7 – Recommended MR for Pavement Design APPENDICES APPENDIX A – General Site Maps APPENDIX B – Web Soil Survey 3.0 APPENDIX C – Soil Taxonomy Statement APPENDIX D – Pedological Soil Logs and Test Data APPENDIX E – Abrasion and Corrosion Rating 2 PEDOLOGICAL & GEOLOGICAL SOIL SURVEY EC 1394Q US 56 OVER BEAVER RIVER CIMARRON COUNTY, OKLAHOMA 28658(04) PROJECT NO. 14039 1.0 INTRODUCTION 1.1 Project Authorization Kristi K. Bumpas, PE LEED AP, President of Red Rock Consulting, LLC, assigned this project to James B. Nevels, Jr, PhD, PE on February 17, 2014. The work was authorized by Professional Engineering Consultants (PEC), PA at the Cherokee Building 4150 S. 100th E. Avenue, Suite 401, Tulsa Ok 74146. The scope of work for the pedological and geological soil survey includes all resilient modulus and supporting data, soil taxonomy and soil descriptions, geologic statement, problem soils, analysis and recommendations. The purpose of this study was to explore the subsurface conditions at the site with regards to project earthwork and pavement subgrade construction. The scope did not include any environmental assessment for the presence or absence of wetlands or hazardous or toxic materials in the soil, surface water, groundwater, or air on or below or around the site. 1.2 Qualifications Mr. James B. Nevels’, Jr, PhD, PE responsibility was limited to selecting the representative soil series sampling locations, logging the soil series descriptions, reviewing the Red Rock Consulting, LLC test data, and preparing the preliminary report. The laboratory processing and testing of the pedological soil samples was conducted by Cobb Engineering Co. at 13801 N. Meridian Avenue in Oklahoma City, Oklahoma, 73134; and the resilient modulus tests were performed by Naji Khoury at 3051 PS Business Center, Woodbridge, VA 22192 for Red Rock Consulting. The field sampling and laboratory testing were performed in general accordance with the current Oklahoma Department of Transportation (ODOT) Roadway Design geotechnical specification (June 29, 2011). 1.2 Proposed Construction The project consists of the replacement of the existing six span bridge and approach embankments with a new five span bridge and grade and drain located approximately 8.6 miles southwest of the junction of US 385 and US 56 along US 56 over the Beaver River. The center Pedological& Geological Soil Survey US 56 over Beaver River, Cimarron County, Oklahoma 28658(04) RRC Project No. 14039 May 14, 2014 line for the new alignment grading is along the existing center line of survey of US 56 at approximately the same grade line elevation. The roadway improvement calls for a new 24 foot wide pavement with 8 wide foot shoulders with a minimum 20 foot clear zone. The proposed roadway reconstruction will be made by redirecting traffic onto a shoofly grade to be constructed at a 100 foot offset southeast of the existing alignment. Based on the plan cross‒sections, the shoofly grade will involve cut section grading that intercepts and cuts into the mixed eolin sands, and partly wind reworked alluvial materials, unconsolidated sediments of the Ogallala Formation, and the Dakota Sandstone Formation. The proposed beginning of the project (BOP) is at station 1042+50, and the end of project (EOP) is at station 1055+00 along the existing US 56 centerline. The overall roadway length of the project is 874.50 feet (0.165 miles), and total length of project is 1250.00 feet (0.237 miles). The preliminary design plans were prepared by PEC. Pertinent sheets of the plan set are presented in Appendix A. 4 Pedological& Geological Soil Survey US 56 over Beaver River, Cimarron County, Oklahoma 28658(04) RRC Project No. 14039 May 14, 2014 2.0 PEDOLOGICAL and GEOLOGICAL SOIL SURVEY 2.1 Site Conditions The site of the referenced project is located approximately 8.6 miles southwest of the junction of US 385 and US 56 along US 56 over the Beaver River in Cimarron County, Oklahoma. The general location of the site is shown in Figure 1. The existing US 56 alignment is a 24 foot wide asphalt pavement with 3 foot mixed aggregate and grass shoulders with a varying 100 to 120 foot right of way. The existing alignment is on northeast‒southwest tangent alignment with connecting local roads at each end surveyed project extent. Existing utilities along the proposed alignment consist of the following: a.) overhead electric lines (unidentified) west of station 1035+00 and b.) overhead electric lines (unidentified) crossing the existing alignment at approximately station 1060+66. Additional utilities should be anticipated within the proposed construction areas. The surrounding land along the existing alignment is generally all range land used for cattle grazing, see Figure 2. 2.2 Subsurface Conditions The subsurface conditions throughout this project extent consist of soils developed from alluvial sediments, mixed eolin sands, and partly wind reworked alluvial materials, see Table 1. The geomorphic province at this site is the High Plains which consists of