DATE: 5/17/2012. LOGGED BY: Geoff Richards. COMPANY: Tetra Tech EM, Inc. DRILL FOREMAN: Walter

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Darlene Ellis
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Page 1 of 1 B1 0 1 2 FILL, Dry; brownish red; clayey silt and gravel; ~30% gravel size fragments of dark grey microcrystalline (aphanetic), extrusive,

2 Page 1 of 1 B FILL, Dry; brownish red; clayey silt and gravel; ~30% gravel size fragments of dark grey microcrystalline (aphanetic), extrusive, igneous, rock 3 B1-4a 1100 B1-4b-duplicate Refusal at 4 feet bgs Attempted boring at two separate locations to achieve greatest sample depth

3 Page 1 of 1 B FILL; Dry; reddish brown; silt and gravel; `~30% hard; angular; gravel and cobble size fragments of grey micro-cystalline extrusive igneous rock B B2-6a 1031 FILL; Dry; tan to grey; fine sandy silt and gravel; ~25% angular; gravel to cobble size fragments of dark grey aphanitic extrusive igneous rock. 6 B2-6b-duplicate 1031 Refusal at 6 feet bgs fragments typical of gravel encountered across the site. 7 8

4 1 of 3 Pages B FILL; dry; light brown; silt with gravel; ~30% angular; hard; gravel size fragments; of grey aphanitic extrusive igneous rock. 3 B

5 2 of 3 Pages B FILL; Dry; light brown; clayey silt with gravel; rock fragments are the same as above B Fill; Dry; greyish brown; fine sandy silt with gravel; rock fragments are the same as above B

6 3 of 3 Pages B3 18 Native begins 18 ft bgs B3-24 CL 1404 Dry; greyish brown; SILTY CLAY; dense; medium stiff; non-plastic but can be rolled; resembles weathered granite refusal at depth was not an issue for this location Boring terminated at 24 feet bgs 25 26

7 B FILL;Dry; light brown; clayey silt with gravel;~30% gravel; fragments are grey; angular; gravel to cobble size aphanatic;extrusive;igneous. 3 4 B FILL; Dry; light brown; clayey silt with gravel;~30% gravel; fragments are grey; angular; gravel to cobble size aphanatic;extrusive;igneous. 8

8 B FILL; Dry; light brown; clayey silt with gravel;~30% gravel; fragments are grey; angular; gravel to cobble size aphanatic;extrusive;igneous. B Moist;reddish brown; CLAYEY SILT; ~35% grey; angular;gravel to cobble size fragments; increased plasticity CL 16 B native soil at ~16 feet bgs 17

9 B Moist;reddish brown; CLAYEY SILT; ~35% grey; angular;gravel to cobble size fragments; increased plasticity CL 20 B Boring terminated at 20 feet bgs 21 Depth to bottom is 20 feet. no refusal and little recovery in the uncompacted fill. boring situated on top of the berm created by secondary access road

10 SITE: Proposded Rancho Coronado School B FILL; Dry;tan brown;gravelly silt;~30% hard; angular; gravel to cobble size fragments of dark grey; aphanitic; extrusive; igneous rock B B Compacted FILL; Moist; dark reddish brown; clayey silt and gravel; ~5% hard; angular; cobble size fragments; fragments are weathered and resemble granite; a high degree of iron oxide staining

11 SITE: Proposded Rancho Coronado School B Compacted FILL; Moist; dark reddish brown; clayey silt and gravel; ~5% hard; angular; cobble size fragments; fragments are weathered and resemble granite; a high degree of iron oxide staining 11 Native begins at ~11 feet bgs CL Moist; light reddish tan; SILTY CLAY; significant degree of iron oxide weathering; soil resembles saprolitic granite B B CL Moist; light reddish tan; SILTY CLAY; significant degree of iron oxide weathering; soil resembles saprolitic granite Refusal at 14 feet bgs

12 B Compacted FILL; damp; dark grayish brown; silt with gravel; ~40% gravel; fragments are hard; grey; aphanitic; extrusive; igneous rock 3 B B6-4 SW Dry; light tan; well sorted; sandy silt; appears to be a friable weathered sandstone. Unlike any soil encountered on site B6-8 SW Dry; light tan; well sorted; sandy silt; appears to be a friable weathered sandstone

13 B6 9 SW Dry; light tan; well sorted; sandy silt; appears to be a friable weathered sandstone. B Refusal at ~10 feet bgs

14 DATE: 5/18/2012 B B FILL; Dry; sandy gravel 3 4 B FILL; Dry; light brown; silty gravel; ~30% gravel; fragments are hard; grey; aphanitic; extrusive igneous FILL; Dry; dark reddish brown; silty gravel; ~50% gravel; fragments are the same as above 8 B

15 DATE: 5/18/2012 B7 9 FILL; Dry; dark reddish brown; silty gravel; ~50% gravel; fragments are the same as above B SM Dry; light reddish tan; fine SANDY SILT; medium dense; weathered with iron oxide staining native begins below ~10 feet bgs B Refusal at 10.5 feet bgs

Project No: 68R3056 Client: City of Frederick Project: RFQ 14-H Future North Side Water Tank City/State: 7516 Hayward Road, Frederick, MD

Project No: 68R3056 Client: City of Frederick Project: RFQ 14-H Future North Side Water Tank City/State: 7516 Hayward Road, Frederick, MD Boring: SB-1 (1 of 1) Moist, brown to orange brown CLAY and SILT, trace sand with fine weathered rock fragments. POSSIBLE FILL. Dry, orange brown sandy SILT trace clay (SM-ML). RESIDUAL SOIL : Not Surveyed