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20 APPENDIX A

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22 SYMBOL SAMPLING DESCRIPTION Location of sample obtained in general accordance with ASTM D 1586 Standard Penetration Test with recovery Location of sample obtained using thin-wall Shelby tube or Geoprobe sampler in general accordance with ASTM D 1587 with recovery Location of sample obtained using Dames & Moore sampler and 300-pound hammer or pushed with recovery Location of sample obtained using Dames & Moore or 3-inch-O.D. split-spoon sampler and 140- pound hammer or pushed with recovery Location of grab sample Graphic Log of Soil and Rock Types Observed contact between soil or rock units (at depth indicated) Rock coring interval Water level during drilling Inferred contact between soil or rock units (at approximate depths indicated) Water level taken on date shown GEOTECHNICAL TESTING EXPLANATIONS ATT Atterberg Limits P Pushed Sample CBR California Bearing Ratio PP Pocket Penetrometer CON DD DS HYD MC MD OC Consolidation Dry Density Direct Shear Hydrometer Gradation Moisture Content Moisture-Density Relationship Organic Content P200 RES SIEV TOR UC VS kpa Percent Passing U.S. Standard No. 200 Sieve Resilient Modulus Sieve Gradation Torvane Unconfined Compressive Strength Vane Shear Kilopascal ENVIRONMENTAL TESTING EXPLANATIONS CA Sample Submitted for Chemical Analysis ND Not Detected P Pushed Sample NS No Visible Sheen PID ppm Photoionization Detector Headspace Analysis Parts per Million SS MS HS Slight Sheen Moderate Sheen Heavy Sheen SW Sequoia Parkway - Suite 100 Portland OR Off Fax EXPLORATION KEY TABLE A-1

23 RELATIVE DENSITY - COARSE-GRAINED SOILS Relative Density Standard Penetration Resistance Dames & Moore Sampler (140-pound hammer) Dames & Moore Sampler (300-pound hammer) Very Loose Loose Medium Dense Dense Very Dense More than 50 More than 120 More than 47 CONSISTENCY - FINE-GRAINED SOILS Consistency Standard Penetration Resistance Dames & Moore Sampler (140-pound hammer) Dames & Moore Sampler (300-pound hammer) Unconfined Compressive Strength (tsf) Very Soft Less than 2 Less than 3 Less than 2 Less than 0.25 Soft Medium Stiff Stiff Very Stiff Hard More than 30 More than 65 More than 31 More than 4.0 COARSE-GRAINED SOILS (more than 50% retained on No. 200 sieve) FINE-GRAINED SOILS (50% or more passing No. 200 sieve) MOISTURE CLASSIFICATION Term dry moist wet PRIMARY SOIL DIVISIONS GROUP SYMBOL GROUP NAME GRAVEL (more than 50% of coarse fraction retained on No. 4 sieve) SAND CLEAN GRAVELS (< 5% fines) GW or GP GRAVEL GRAVEL WITH FINES GW-GM or GP-GM GRAVEL with silt ( 5% and 12% fines) GW-GC or GP-GC GRAVEL with clay GRAVELS WITH FINES (> 12% fines) CLEAN SANDS (<5% fines) GM GC GC-GM SW or SP silty GRAVEL clayey GRAVEL silty, clayey GRAVEL SAND SANDS WITH FINES SW-SM or SP-SM SAND with silt (50% or more of ( 5% and 12% fines) coarse fraction SW-SC or SP-SC SAND with clay passing SM silty SAND SANDS WITH FINES No. 4 sieve) SC clayey SAND (> 12% fines) SC-SM silty, clayey SAND ML SILT CL CLAY Liquid limit less than 50 CL-ML silty CLAY SILT AND CLAY OL ORGANIC SILT or ORGANIC CLAY MH SILT Liquid limit 50 or CH CLAY greater OH ORGANIC SILT or ORGANIC CLAY HIGHLY ORGANIC SOILS PT PEAT Field Test very low moisture, dry to touch ADDITIONAL CONSTITUENTS Percent Fine-Grained Soils Secondary granular components or other materials such as organics, man-made debris, etc. Silt and Clay In: Sand and Gravel In: Coarse- Grained Soils Percent Fine-Grained Soils Coarse- Grained Soils damp, without < 5 trace trace < 5 trace trace visible moisture 5 12 minor with 5 15 minor minor visible free water, > 12 some silty/clayey with with usually saturated > 30 sandy/gravelly sandy/gravelly SW Sequoia Parkway - Suite 100 Portland OR Off Fax SOIL CLASSIFICATION SYSTEM TABLE A-2

24 DEPTH FEET GRAPHIC LOG MATERIAL DESCRIPTION ELEVATION DEPTH TESTING SAMPLE MOISTURE CONTENT (%) COMMENTS TP Medium stiff, dark brown SILT (ML), minor clay, trace fine sand and organics (rootlets); moist, nonplastic to low plasticity (topsoil, 1-inch-thick root zone). Stiff, brown SILT (ML), minor clay, trace fine sand and organics (rootlets); moist, nonplastic to low plasticity. Stiff to very stiff, brown SILT with fine sand (ML), trace clay; moist, nonplastic, zones of orange and gray mottles, weak to moderate induration Very stiff, brown with orange mottled, fine, silty SAND (SM); moist, nonplastic, micaceous, moderate induration. Exploration completed at a depth of 10.0 feet No groundwater seepage observed to the depth explored. No caving observed to the depth explored TEST PIT LOG - 2 PER PAGE ODOT TP-1_13.GPJ GEODESIGN.GDT PRINT DATE: 5/10/10:KT TP Stiff, brown and gray-brown, gravelly SILT (ML), trace fine sand, brick and asphalt fragments, and organics (rootlets); moist, nonplastic, fine to coarse subrounded to rounded gravel (2-inch-thick root zone) - FILL. 7-inch-thick layer of asphalt concrete grindings at 2.25 feet Stiff, brown SILT (ML), minor fine sand, trace clay; moist, nonplastic, micaceous. grades to brown with slight orange mottles, trace fine sand, weak induration at 6.0 feet minor fine sand, moderately indurated at 7.0 feet Exploration completed at a depth of 8.0 feet. EXCAVATED BY: Dan J. Fischer Excavating, Inc SW Sequoia Parkway - Suite 100 Portland OR Off Fax EXCAVATION METHOD: trackhoe (see report text) ODOT MAY P200 LOGGED BY: JPW TEST PIT P200 = 71% BALDOCK REST AREA SOLAR HIGHWAY PROJECT CLACKAMAS COUNTY, OR No groundwater seepage observed to the depth explored. No caving observed to the depth explored. COMPLETED: 04/16/10 FIGURE A-1

25 DEPTH FEET TP GRAPHIC LOG MATERIAL DESCRIPTION Medium stiff, dark brown SILT (ML), minor clay, trace fine sand and organics (rootlets); moist, nonplastic to low plasticity (topsoil, 1 1/2-inch-thick root zone). Stiff, brown SILT (ML), minor clay and fine sand, trace organics (rootlets); moist, nonplastic to low plasticity, micaceous, weak to moderate induration. Stiff, brown, fine, silty SAND (SM); moist, nonplastic, micaceous, weak to moderate induration. lenses of silt with fine sand from 7.5 to 9.0 feet Exploration completed at a depth of 9.0 feet. ELEVATION DEPTH TESTING P200 SAMPLE MOISTURE CONTENT (%) P200 = 48% COMMENTS No groundwater seepage observed to the depth explored. No caving observed to the depth explored TEST PIT LOG - 2 PER PAGE ODOT TP-1_13.GPJ GEODESIGN.GDT PRINT DATE: 5/10/10:KT TP Medium stiff to stiff, dark brown SILT (ML), trace fine sand and organics (rootlets); moist, nonplastic (topsoil, 2- inch-thick root zone). Stiff to very stiff, brown with slight orange and gray mottled SILT (ML), minor clay, trace fine sand and organics (rootlets); moist to wet, nonplastic to low plasticity. Very stiff, brown with slight orange mottled SILT (ML), minor fine sand, trace clay; moist, nonplastic, slight induration. with fine sand, micaceous, moderate induration at 7.0 feet Very stiff, brown with slight orange mottled, fine, sandy SILT (ML); moist, nonplastic, micaceous, moderate induration. Exploration completed at a depth of 10.0 feet. EXCAVATED BY: Dan J. Fischer Excavating, Inc SW Sequoia Parkway - Suite 100 Portland OR Off Fax EXCAVATION METHOD: trackhoe (see report text) ODOT MAY PP PP PP LOGGED BY: JPW TEST PIT PP = 1.0 tsf PP = 2.0 tsf PP = 2.75 tsf BALDOCK REST AREA SOLAR HIGHWAY PROJECT CLACKAMAS COUNTY, OR No groundwater seepage observed to the depth explored. No caving observed to the depth explored. COMPLETED: 04/16/10 FIGURE A-2

26 DEPTH FEET TP GRAPHIC LOG MATERIAL DESCRIPTION Very stiff, dark brown SILT (ML), trace fine sand, red brick fragments, and organics (rootlets); moist, nonplastic - FILL. Very stiff, brown with slight orange mottled SILT (ML), minor clay, trace fine sand and organics (rootlets); moist, nonplastic to low plasticity. Very stiff, brown with slight orange and gray mottled SILT (ML), minor fine sand, trace clay; moist, nonplastic, micaceous, moderate induration. ELEVATION DEPTH TESTING PP PP SAMPLE MOISTURE CONTENT (%) PP = 2.25 tsf PP = 1.5 tsf COMMENTS Very stiff, brown with slight orange mottled, fine, sandy SILT (ML); moist, micaceous, moderate induration. Exploration completed at a depth of 9.5 feet No groundwater seepage observed to the depth explored. No caving observed to the depth explored TEST PIT LOG - 2 PER PAGE ODOT TP-1_13.GPJ GEODESIGN.GDT PRINT DATE: 5/10/10:KT TP ASPHALT CONCRETE decomposings. Stiff, brown with orange mottled SILT with fine sand (ML), trace clay; moist, nonplastic, weak to moderate induration. Exploration completed at a depth of 2.0 feet. EXCAVATED BY: Dan J. Fischer Excavating, Inc SW Sequoia Parkway - Suite 100 Portland OR Off Fax EXCAVATION METHOD: trackhoe (see report text) ODOT MAY LOGGED BY: JPW TEST PIT BALDOCK REST AREA SOLAR HIGHWAY PROJECT CLACKAMAS COUNTY, OR No groundwater seepage observed to the depth explored. No caving observed to the depth explored. COMPLETED: 04/16/10 FIGURE A-3

27 DEPTH FEET TP GRAPHIC LOG MATERIAL DESCRIPTION Medium stiff to stiff, dark brown SILT (ML), trace fine sand, clay, and organics (rootlets); moist, nonplastic (topsoil, 2- inch-thick root zone). Stiff, brown with slight orange mottled SILT (ML), minor fine sand, trace clay and organics (rootlets); moist, nonplastic, micaceous, weak induration. becomes moderately indurated at 3.5 feet grades to stiff to very stiff, without mottles at 4.5 feet Stiff to very stiff, brown, fine, sandy SILT (ML); moist, nonplastic, micaceous, moderate induration. Exploration completed at a depth of 8.0 feet. ELEVATION DEPTH TESTING SAMPLE MOISTURE CONTENT (%) COMMENTS No groundwater seepage observed to the depth explored. No caving observed to the depth explored TEST PIT LOG - 2 PER PAGE ODOT TP-1_13.GPJ GEODESIGN.GDT PRINT DATE: 5/10/10:KT TP Medium stiff, dark brown SILT (ML), trace fine sand, clay, and organics (rootlets); moist, nonplastic (topsoil, 1- to 2-inch-thick root zone). Medium stiff to stiff, brown SILT (ML), minor clay, trace fine sand and organics (rootlets); moist, nonplastic to low plasticity, micaceous. Very stiff, brown with slight orange mottled SILT (ML), minor fine sand, trace clay; moist, nonplastic, micaceous, moderate induration. Very stiff, brown, fine, sandy SILT (ML); moist, nonplastic, micaceous, moderate induration. with fine sand at 7.0 feet Exploration completed at a depth of 8.5 feet. EXCAVATED BY: Dan J. Fischer Excavating, Inc SW Sequoia Parkway - Suite 100 Portland OR Off Fax EXCAVATION METHOD: trackhoe (see report text) ODOT MAY LOGGED BY: JPW TEST PIT BALDOCK REST AREA SOLAR HIGHWAY PROJECT CLACKAMAS COUNTY, OR No groundwater seepage observed to the depth explored. No caving observed to the depth explored. COMPLETED: 04/16/10 FIGURE A-4

28 DEPTH FEET TP GRAPHIC LOG MATERIAL DESCRIPTION Medium stiff, dark brown SILT (ML), trace fine sand, clay, and organics (rootlets); moist, low plasticity (1 1/2- inch-thick root zone). Medium stiff to stiff, brown SILT (ML), minor clay, trace fine sand; moist, low plasticity, micaceous. becomes very stiff, nonplastic, moderately indurated at 3.5 feet ELEVATION DEPTH TESTING PP PP PP SAMPLE MOISTURE CONTENT (%) PP = 0.5 tsf PP = 1.0 tsf PP = 2.25 tsf COMMENTS Stiff to very stiff, brown, fine, sandy SILT (ML), trace clay; moist, nonplastic, micaceous, weak to moderate induration. Exploration completed at a depth of 8.5 feet No groundwater seepage observed to the depth explored. No caving observed to the depth explored TEST PIT LOG - 2 PER PAGE ODOT TP-1_13.GPJ GEODESIGN.GDT PRINT DATE: 5/10/10:KT TP Medium stiff, dark brown CLAY (CL), trace fine sand and organics; moist (topsoil). Medium stiff to stiff, brown SILT (ML), minor fine sand and clay, trace organics (rootlets); moist, nonplastic to low plasticity, micaceous. Stiff to very stiff, brown with orange mottled SILT (ML), minor fine sand, trace clay; moist, nonplastic, micaceous, moderate induration. Stiff to very stiff, brown, fine, sandy SILT (ML); moist, nonplastic, micaceous, weak to moderate induration. Exploration completed at a depth of 7.5 feet. EXCAVATED BY: Dan J. Fischer Excavating, Inc SW Sequoia Parkway - Suite 100 Portland OR Off Fax EXCAVATION METHOD: trackhoe (see report text) ODOT MAY ATT LOGGED BY: JPW LL = 39% PL = 21% TEST PIT BALDOCK REST AREA SOLAR HIGHWAY PROJECT CLACKAMAS COUNTY, OR No groundwater seepage observed to the depth explored. No caving observed to the depth explored. COMPLETED: 04/16/10 FIGURE A-5

29 DEPTH FEET TP GRAPHIC LOG MATERIAL DESCRIPTION Stiff, brown and dark brown SILT (ML), minor fine sand, trace subrounded to rounded gravel, asphalt fragments, and organics (rootlets); moist, nonplastic (1-inch-thick root zone) - FILL. filter fabric overlain by 3 inches of asphalt concrete (grindings) at 1.0 foot Stiff, brown SILT (ML), minor fine sand and clay; moist, nonplastic to low plasticity, micaceous. Stiff to very stiff, brown with slight orange mottled SILT with fine sand (ML), trace clay; moist, nonplastic, micaceous, moderate induration. Exploration completed at a depth of 6.5 feet. ELEVATION DEPTH TESTING SAMPLE MOISTURE CONTENT (%) COMMENTS No groundwater seepage observed to the depth explored. No caving observed to the depth explored TEST PIT LOG - 2 PER PAGE ODOT TP-1_13.GPJ GEODESIGN.GDT PRINT DATE: 5/10/10:KT TP Medium stiff, dark brown SILT (ML), minor clay, trace fine sand, organics, and gravel; moist, nonplastic to low plasticity (1 1/2-inch-thick root zone) - FILL. Stiff, brown with slight orange mottled SILT (ML), minor clay and fine sand; moist, nonplastic to low plasticity, micaceous. Very stiff, brown with orange mottled SILT with fine sand (ML); moist, nonplastic, micaceous, moderate induration. Stiff to very stiff, brown with orange mottled, fine, sandy SILT (ML); moist, nonplastic, micaceous, moderate induration, lenses of silt with fine sand. Exploration completed at a depth of 8.0 feet. EXCAVATED BY: Dan J. Fischer Excavating, Inc SW Sequoia Parkway - Suite 100 Portland OR Off Fax EXCAVATION METHOD: trackhoe (see report text) ODOT MAY LOGGED BY: JPW TEST PIT BALDOCK REST AREA SOLAR HIGHWAY PROJECT CLACKAMAS COUNTY, OR No groundwater seepage observed to the depth explored. No caving observed to the depth explored. COMPLETED: 04/16/10 FIGURE A-6

30 DEPTH FEET TP GRAPHIC LOG MATERIAL DESCRIPTION Medium dense, brown and gray, fine to coarse, sandy GRAVEL with silt (GP- GM), trace to minor organics (rootlets, branches); moist, subrounded to rounded - FILL. Stiff, brown SILT (ML), minor sand and clay, trace gravel; moist - FILL. concrete fragment (approximately 18 inches in diameter) at 1.5 feet WOOD DEBRIS (branches). Stiff, brown with orange mottled, fine, sandy SILT (ML); moist to wet, nonplastic, micaceous. Exploration completed at a depth of 7.0 feet. ELEVATION DEPTH TESTING SAMPLE MOISTURE CONTENT (%) COMMENTS Rapid groundwater seepage observed at a depth of 3.0 feet in wood debris. Severe caving observed at a depth of 3.0 feet in wood debris TEST PIT LOG - 2 PER PAGE ODOT TP-1_13.GPJ GEODESIGN.GDT PRINT DATE: 5/10/10:KT EXCAVATED BY: Dan J. Fischer Excavating, Inc SW Sequoia Parkway - Suite 100 Portland OR Off Fax EXCAVATION METHOD: trackhoe (see report text) ODOT MAY 2010 LOGGED BY: JPW COMPLETED: 04/16/10 TEST PIT BALDOCK REST AREA SOLAR HIGHWAY PROJECT FIGURE A-7 CLACKAMAS COUNTY, OR

31 60 50 CH or OH PLASTICITY INDEX CL or OL "A" LINE MH or OH CL-ML ML or OL LIQUID LIMIT ATTERBERG_LIMITS 7 ODOT TP-1_13.GPJ GEODESIGN.GDT PRINT DATE: 5/6/10:KT KEY EXPLORATION SAMPLE DEPTH MOISTURE CONTENT LIQUID LIMIT PLASTIC LIMIT PLASTICITY INDEX NUMBER (FEET) (PERCENT) TP SW Sequoia Parkway - Suite 100 Portland OR Off Fax ODOT MAY ATTERBERG LIMITS TEST RESULTS BALDOCK REST AREA SOLAR HIGHWAY PROJECT CLACKAMAS COUNTY, OR 18 FIGURE A-8

32 EXPLORATION NUMBER SAMPLE INFORMATION SAMPLE DEPTH (FEET) ELEVATION (FEET) MOISTURE CONTENT (PERCENT) DRY DENSITY (PCF) GRAVEL (PERCENT) SIEVE SAND (PERCENT) P200 (PERCENT) LIQUID LIMIT (PERCENT) ATTERBERG LIMITS PLASTIC LIMIT (PERCENT) PLASTICITY INDEX (PERCENT) TP TP TP TP TP TP TP TP TP TP TP TP TP TP TP TP TP LAB SUMMARY ODOT TP-1_13.GPJ GEODESIGN.GDT PRINT DATE: 5/6/10:KT SW Sequoia Parkway - Suite 100 Portland OR Off Fax ODOT MAY 2010 SUMMARY OF LABORATORY DATA BALDOCK REST AREA SOLAR HIGHWAY PROJECT CLACKAMAS COUNTY, OR FIGURE A-9

33 APPENDIX B

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39 ACRONYMS

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