North Tarrant Express (NTE) 3B

Transcription

1 Fugro Consultants, Inc Virgo ane Tel: Dallas, Texas Fax: North Express (NTE) 3B Fugro Technical Memo No. 1 To: Jiri Filipovic, PE AECM Anthony Karlinski, PE - AECM scar Aguirre, P.E. Aguirre & Fields From: Saad M. Hineidi, P.E., Chula B. Ellepola, P.E., & Andrew D. Johnson, P.E. Date: December 22, 2009 Fugro Project No.: AECM Contact No.: ( ) Re: Preliminary eotechnical Recommendations for Bridge Design This design memorandum presents geotechnical information for the design of the bridges proposed for the NTE Segment 3B project. ur recommendations are based on the following: Plan and profile drawings provided by AECM Technical Services, Inc.; The bridge concept plan developed by Aguirre & Fields, P and Subsurface information obtained through the advancement of 15 borings by Fugro Consultants, Inc. (Fugro). This information is preliminary and is aimed at providing the design team with adequate information to size the drilled shafts and develop a bill of quantity (BQ). Additional borings and analyses are required to develop final geotechnical design recommendations in the detailed design phase. Drilled Shaft Foundations We recommend supporting the proposed bridges on auger-excavated, straight-shaft, steel reinforced, cast-in-place concrete drilled shafts. Depending on the locations of the bridges, the drilled shafts will bear in hard to very hard gray limestone. The borings indicate the drilled shafts may penetrate through limestone, which contains several intermixed shale seams. The limestone rock can adequately support the pier loads thru both end bearing and skin -Page 1-

2 NTE Segment 3B Fugro Technical Memo # 1 Fugro Project No December 22, 2009 friction. Resistance to uplift forces generated by the swelling soils have to be resisted by the skin friction generated by the interaction of the concrete pier and the limestone rock until the superstructure loads can be applied to the newly installed pier. In fact, most piers designed and constructed in the DFW area uses a combination of end bearing and skin friction to support the superstructure loads. Therefore, the drilled shafts will derive their load-carrying capability from a combination of skin friction through the various rock layers and end bearing within the recommended bearing stratum. The preliminary geotechnical design parameters for drilled shafts supporting the proposed bridges along with the approximate elevations of the top of the bearing strata are presented in Table 2. The drilled shafts should be designed using these parameters. The preliminary design parameters are summarized in Table 1. As a quality control measure of the drilled shaft capacity, we are presenting drilled shaft capacity charts as Plate 2 of this report. This chart can be used to visually verify the computed shaft capacity. Due to the subsurface materials underlying the project alignment as well as the undulating topographical relief along the alignment, we have developed a preliminary design for the proposed bridges. The geotechnical recommendations for the design of the piers use the methodology recommended by TxDT in their 2006 eotechnical Manual (Figures 5.3 and 5.4). The preliminary design is summarized in the following table: Table 1. Preliminary Bridge Design Parameters Parameters Design 1 Drilled Shaft Type Straight Shaft Recommended Bearing Stratum Hard to very hard limestone Approximate Elevation of the Top of the Bearing Statum See Table 2 Net Allowable End Bearing Pressure, ksf 64.0 Net Allowable Skin Friction, ksf 6.5 Net Allowable Resistance to Uplift Pressures, ksf 4.5 -Page 2-

3 NTE Segment 3B Fugro Technical Memo # 1 Fugro Project No December 22, 2009 Table 1. Preliminary Bridge Design Parameters Parameters Design 1 Minimum Penetration into the Bearing Stratum, ft. Minimum Shaft ength 2.0 The greatest of 3 times the shaft diameter or 10 ft Note: 1 The preliminary design parameters are based on 15 widely-spaced borings drilled by Fugro. Plate 2 of this report presents a chart showing the relationship between the required shaft penetrations into the bearing material versus the shaft capacity. The shaft design information and a table showing the TxDT recommendations for the shaft diameter versus their maximum service load are presented on this plate. The boring locations are shown on Plate 1 of this report. Table 2 presents the boring locations and corresponding station numbers, the depths to the bearing strata, the design criteria, and the applicable area. Table 2. Boring ocations, Bearing Strata Elevations, and Preliminary Design Parameters Bridge # Boring # Approximate ocation / Station Numbers Recommended Bearing Stratum Approximate Elevation of Bearing Stratum Minimum Penetration into the Bearing Stratum Allowable Skin Friction (ksf) Allowable Resistance To Uplift (ksf) Allowable End Bearing (ksf) 301 3B-1 & 3B-2 IH-35W & North Parkway Hard to Very Hard imestone , 303, & 304 3B-5, 3B-6, & 3B-7 IH-35W & Hwy 287 Hard to Very Hard imestone B , 308, 309, & , 312, 313, 314, 315, 3B-10 & 3B-11 3B-10, 3B-11, & 3B-12 3B-12, 3B-13, & 3B-14 IH-35W & Hwy 287 SB n-ramp STA to STA IH-35W & Basswood Blvd IH-35W STA to STA IH-35W & Big Fossil Creek Hard to Very Hard imestone Hard to Very Hard imestone Hard to Very Hard imestone Hard to Very Hard imestone to Page 3-

4 NTE Segment 3B Fugro Technical Memo # 1 Fugro Project No December 22, 2009 Table 2. Boring ocations, Bearing Strata Elevations, and Preliminary Design Parameters Bridge # Boring # Approximate ocation / Station Numbers Recommended Bearing Stratum Approximate Elevation of Bearing Stratum Minimum Penetration into the Bearing Stratum Allowable Skin Friction (ksf) Allowable Resistance To Uplift (ksf) Allowable End Bearing (ksf) 316, & , 319, & 320 3B-13 & 3B-14 IH-35W & Western Center Blvd Hard to Very Hard imestone Notes: 1 The preliminary design parameters are based on the widely-spaced borings drilled by Fugro. The depth to the bearing strata will vary between these borings. 2 The ground surface elevations of the boreholes were provided to us by SAM, Inc. 3 Due to the elevation of the bearing stratum changing significantly thru this area, an was sent to A&F under separate cover providing the bearing stratum elevation for each bent in this area. The shafts will be subjected to vertical uplift force caused by expansion within the expansive fat clay soils. Therefore, each shaft must contain reinforcing steel throughout its full length. The vertical uplift force can be approximated to be 1,500 pounds per square foot of perimeter surface area of the shaft over an average depth of 12 feet (zone of seasonal moisture change). Although, the uplift forces will be offset to some extent by the dead weight of the structure, the primary resistance against uplift will be the skin frictional resistance derived by the interaction of the concrete shaft against the surrounding bearing stratum below the minimum penetration depth. ur estimation of the resistance against the uplift forces is presented in Tables 1 and 2. Foundation shafts designed and constructed in accordance with the information provided in this report will have a factor of safety of 2 against shear type failure and should experience minimal settlement (less than ¾ inch). A reduction of the allowable bearing pressure and uplift resistance will be required if the shafts are placed less than three shaft diameters apart. We should be contacted to review closer shaft spacing on a case-by-case basis. As a general guide, the design skin friction will vary linearly from the full value at a spacing of 3 shaft diameters to 50 percent of the design value at a spacing of one (1) shaft diameter. -Page 4-

5 NTE Segment 3B Fugro Technical Memo # 1 Fugro Project No December 22, 2009 The borings advanced by Fugro indicate that perched groundwater was present in some of the borings at the time they were drilled. The depths to groundwater at the time of our subsurface exploration and recommendations about the need to use temporary casing to construct the drilled piers are presented in Table 3. Boring # 3B-1 3B-2 3B-3 3B-4 3B-5 3B-6 3B-7 3B-8 3B-9 Table 3. Depths to the Top of Perched roundwater During Drilling Depth to the Top of Seepage During Drilling, ft Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Depth to the Top of roundwater Upon the Completion of Drilling, ft. Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Depth to the Top of roundwater 24 Hours after Drilling Completion, ft. Need Temporary Casing to Install Drilled Piers? 11.7 No 13.4 No 2.7 Yes, during wet weather 11.4 No 3.6 Yes 1.3 Yes 6.7 Yes 6.7 Yes 16.4 Yes -Page 5-

6 NTE Segment 3B Fugro Technical Memo # 1 Fugro Project No December 22, 2009 Boring # 3B-10 3B-11 3B-12 3B-13 3B-14 3B-15 Table 3. Depths to the Top of Perched roundwater During Drilling Depth to the Top of Seepage During Drilling, ft Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Depth to the Top of roundwater Upon the Completion of Drilling, ft. Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Water introduced as a drilling fluid to facilitate rock coring Depth to the Top of roundwater 24 Hours after Drilling Completion, ft. Need Temporary Casing to Install Drilled Piers? 15.3 No 12.4 No 1.1 No 6.7 Yes 2.3 No 0.7 No Based on the groundwater levels, temporary casing may be required to install the drilled shafts. Slurry using a mix of clays and sands may have to be used to facilitate the shaft excavation operations until the temporary casing can be seated in the bearing stratum. Additional design recommendations concerning all preliminary aspects of the design and construction of the foundation shafts will be provided in our final geotechnical report for the technical proposal effort level (BQ/FA workscope level) to be produced later. In preparation of this memorandum, we have strived to perform our services in a manner consistent with that level of care and skill ordinarily exercised by other members of our profession currently practicing in the same locality under similar conditions. No other representation, express or implied is included or intended in this report, any addendum report, opinion, document, or other instrument of service. -Page 6-

7 NTE Segment 3B Fugro Technical Memo # 1 Fugro Project No December 22, 2009 ATTACHMENTS The following plates are attached to this memorandum: 1. Plate 1 Plan of Site and Boring ocations 2. Plate 2 Drilled Shaft Capacity Versus Penetration Charts. 3. Wincore Boring ogs -Page 7-

8 Farm-To-Market Road 1709 Bailey Boswell Basswood Cantrell Sansom Industrial Meacham ong REV DATE BY DESCRIPTIN Alta Vista Big Bear Creek Shiver Haltom 820 Haltom City W hit e s Branch Beach Western Center Basswood ong olden Triangle Riveside Riverside Sylvania Sylvania Fort Worth 35W North 81 ld Denton 35W TARRANT CUNTY Mark IV Deen Harmon Big Fossil Cr eek 820 Terminal Haslet Hwy 156 FM 156 Blue Mound Saginaw Watauga Mceroy Blue Mound ittle Fossil Cr eek Fort Worth Meacham Airport egend Seg 3B Alignment Scale: 1 inch = 3,000 feet Feet 0 1,500 3,000 6,000 Coordinate System: State Plane Texas North Central FIPS 4202 Ft Datum: D North American 1983 SITE VICINITY MAP North Expressway Segment 3B Source: Street map: TNRIS Stratmap, 2006 Drawn By: SE, Texas Date:, 2009 Project No.: PATE A

9 Basswood Blvd Caroline Ct REV DATE BY DESCRIPTIN liver Dr Burts Dr Burgee Ct Rose Ct Addison Dr ld Denton Rd Shiver Rd reen Juliet n N Juliet n Brittany Pl Cascade Ct enevieve Dr 35W North Fwy Fort Worth TARRANT CUNTY A 3B-1 A North Fwy North Fwy 3B-2 35W #Ò V 3B-4 D #Ò V 3B-3 3B-5 #Ò V 3B-6 81 #Ò V 3B-7 D 3B-8 D 3B-9 North Fwy A 3B-11 A 3B-10 Tuscan View Dr Indigo Ridge Dr Sienna Ridge n Scarlet View Trl Candler Dr Almondale Dr 81 B ig Fossil Creek egend A Bridge Boring ocations #Ò V Interchange Boring ocations D Pavement Boring ocations Scale: 1 inch = 1,000 feet Feet ,000 2,000 Coordinate System: State Plane Texas North Central FIPS 4202 Ft Datum: D North American 1983 SITE AND BRIN PAN North Expressway Segment 3B Source: rthophotography: i-cubed via ArcIS nline, 2007 Drawn By: SE, Texas Date: December 9, 2009 Project No.: PATE A-2

10 Approximate Boring ocations by thers Bridge Boring ocations Interchange Boring ocations D Pavement Boring ocations Seg 3B Alignment Ò ÒÒ Ò "B "B "B"B Ò"B"B Ò TH #666-2 "B Ò "B Ò TH #666-3 TH #658-4 Ron do Dr ray Rock Dr Mark IV Augusta Dr 820 ek 820 W r ig ht F wy i t t l e Fos l C re si Superior Pkwy Jim White Rock Dr Flint Rock Dr Dee rfoot Trl NE y P kw y Cantrell Sansom IV w Pk IV Ma rk Dancy Dr S a rk y Dr Sea rc Dancy Dr N M Dr McAdoo n Navasota Cir Sweetwood Dr z Calico Rock Dr Alpena Dr Evenin g Shade Dr Chadwick Dr k ar TH #666-1 "B Ò"BÒ "B"B ÒÒ D Silver Hill Dr Bull Shoals Dr Blanchard Dr TH #665-1 TH #657-1 Table Rock Dr Ash Flat Dr NE oop 820 NE oop 820 Fossil Creek Blvd Fossil Creek Blvd Sands hell Cir S n Aug us ta A A Western Ce nte r ou M e nk Dr TH #658-1 Big Flat Dr SITE AND BRIN PAN egend North Expressway Segment 3B B" Ò A V # Ò TH #659-1 ld Denton Western Center D A Almondal e Dr TH #658-2 ob i D r Sienna Ridge n TH # B-15 3B-13 TH #667-2 TH # o op 8 NE A y 3B-10 Candler Dr Fw y Nor th Sandshel l Dr Dr Fw o ss i l C r e e k DESCRIPTIN n ba 35W gf 3B-14 3B-12 th Nor Bi ir W BY AJ Ur 35W Paladin Pl il Pa rk D Fos s Welshman Dr l vd ll B e h ds San ll C s he d n Sa San ta Fe n Che sin gto n Dr Friendswa y Dr Fort Worth 3B-11 Dr ld Dento n Rd Wa y TARRANT CUNTY N R ive rsid e r Clu bga te D Kentish Dr Tha xton Trl Riverside Har tne tt Basswood Blvd en ev iev e Dr r Brittany Pl Danieldal e Dr rl e R i rs Dr y Pk w ek Permian n et b it o l Tri ers id N ive de Cr e Riv Fos sil B lu ff D r Whitefern Dr Rivesid e Sutter Ct Riv es id e ongleaf n ne Sto n o od n Em ery w Juliet n Ba ss wood f Big lea Riveside Dr N Ritt er n REV DATE 1 12/8/2009 Scale: 1 inch = 1,000 feet ,000 Feet 2,000 Coordinate System: State Plane Texas North Central FIPS 4202 Ft Datum: D North American 1983 Source:, Texas rthophotography: i-cubed via ArcIS nline, 2007 Drawn By : SE Project No.: Dat e: December 17, 2009 PATE A-3

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12 DRIIN 1 of 2 Hole 3B-1 Structure North Express Station ffset T Date 11/2/09 rnd ft FI, clay, brown and tan, sandy, w/gravel. (Fill) ateral Deviator % Passing No. 4 Sieve: 83 % Passing No. 200 Sieve: 56 PP = 4.5+ tsf (6) 8 (6) CAY, soft, dark brown to tan, sandy, w/gravel and calcareous particles. (Alluvium) (CH) % Passing No. 200 Sieve: 85 PP = 4.5 tsf (6) 9 (6) PP = 4.5 tsf (6) 7 (6) % Passing No. 4 Sieve: (6) 9 (6) % Passing No. 200 Sieve: 58 PP = 4.5 tsf 25 6 (6) 8 (6) (6) 36 (6) CAY, very stiff to hard, olive brown to yellowish brown, sandy, w/scattered shells and intermixed limestone fragments. (CH) PP = 2.5 tsf PP = 2.5 tsf (6) 22 (6) % Passing No. 4 Sieve: (6) 32 (6) % Passing No. 200 Sieve: 95 Remarks: Boring was advanced to the 45 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 45 ft, the boring was advanced to the 70.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 11.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

13 DRIIN 2 of 2 Hole 3B-1 Structure North Express Station ffset T Date 11/2/09 rnd ft CAY, very stiff to hard, olive brown to yellowish brown, sandy, w/scattered shells and intermixed limestone fragments. (CH) ateral Deviator (4) 50 (1.5) IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. PP = 4.5 tsf REC = 97%, RQD = 88% (0) 50 (0.25) REC = 97%, RQD = 85% (0.5) 50 (0.25) REC = 90%, RQD = 58% (0.25) 50 (0.25) REC = 98%, RQD = 78% (0.75) 50 (0.5) REC = 92%, RQD = 75% (0.75) 50 (0.5) Remarks: Boring was advanced to the 45 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 45 ft, the boring was advanced to the 70.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 11.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

14 DRIIN 1 of 2 Hole 3B-2 Structure North Express Station ffset RT Date 11/3/09 rnd ft (6) 9 (6) FI, clay, brown and tan, sandy, w/gravel. (Fill) CAY, stiff, dark brown to tan, sandy, w/gravel and calcareous particles. (Alluvium) (CH) ateral Deviator PP = 4.5+ tsf % Passing No. 4 Sieve: 100 % Passing No. 200 Sieve: 87 PP = 4.5+ tsf PP = 4.5+ tsf PP = 3.0 tsf (6) 10 (6) % Passing No. 4 Sieve: (6) 10 (6) % Passing No. 200 Sieve: 86 PP = 4.0 tsf (6) 14 (6) % Passing No. 4 Sieve: (6) 15 (6) % Passing No. 200 Sieve: (6) 9 (6) CAY, soft to stiff, olive brown to yellowish brown, sandy, w/scattered shells and intermixed limestone fragments. (CH) PP = 4.5 tsf % Passing No. 4 Sieve: (6) 21 (6) % Passing No. 200 Sieve: (1) 50 (1) PP = 4.5+ tsf Remarks: Boring was advanced to the 40 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 40 ft, the boring was advanced to the 60.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 13.4 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

15 DRIIN 2 of 2 Hole 3B-2 Structure North Express Station ffset RT Date 11/3/09 rnd ft IMESTNE, very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. ateral Deviator REC = 89%, RQD = 88% (0.25) 50 (0.25) REC = 91%, RQD = 58% (0.75) 50 (0) REC = 87%, RQD = 75% (0.25) 50 (0.5) REC = 100%, RQD = 72% (0.25) 50 (0) Remarks: Boring was advanced to the 40 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 40 ft, the boring was advanced to the 60.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 13.4 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

16 DRIIN 1 of 1 Hole 3B-3 Structure North Express Station ffset T Date 11/2/09 rnd ft (6) 5 (6) 12 (6) 50 (3.25) FI, gravel, brown and tan, clayey, w/sand. (Fill) CAY, soft to hard, dark brown to tan, sandy, w/gravel and calcareous particles. (Alluvium) (CH) IMESTNE, hard, tan, slightly weathered, w/discontinuities. IMESTNE, very hard, dark gray, 50 (0.125) 50 (0.125) w/fossils, intermixed shale seams and layers, and discontinuities. ateral Deviator % Passing No. 4 Sieve: 53 % Passing No. 200 Sieve: 23 PP = 3.0 tsf % Passing No. 4 Sieve: 99 % Passing No. 200 Sieve: 95 PP = 1.5 tsf % Passing No. 4 Sieve: 100 % Passing No. 200 Sieve: REC = 94%, RQD = 58% REC = 95%, RQD = 73% (0.5) 50 (0.125) Remarks: Boring was advanced to the 11 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 11 ft, the boring was advanced to the 20.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 2.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

17 DRIIN 1 of 2 Hole 3B-4 Structure North Express Station ffset RT Date 10/31/09 rnd ft 5 7 (6) 9 (6) FI, clay, brown and tan, sandy, w/gravel. (Fill) ateral Deviator PP = 1.5 tsf % Passing No. 4 Sieve: 100 % Passing No. 200 Sieve: 94 PP = 3.5 tsf % Passing No. 4 Sieve: % Passing No. 200 Sieve: 94 SPT = 15 bpf (6) 18 (6) (4.5) 50 (2.25) CAY, hard, dark brown, w/gravel and calcareous particles. (Alluvium) (CH) SPT = 38 bpf % Passing No. 4 Sieve: 100 % Passing No. 200 Sieve: (2) 50 (0.25) IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. SPT = 50/1'' REC = 90%, RQD = 83% (0.5) 50 (0.125) 13.0 REC = 96%, RQD = 90% (0.5) 50 (0.25) REC = 97%, RQD = 63% (0.5) 50 (0) REC = 98%, RQD = 83% (0.5) 50 (0.25) Remarks: Boring was advanced to the 20 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 20 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 11.4 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

18 DRIIN 2 of 2 Hole 3B-4 Structure North Express Station ffset RT Date 10/31/09 rnd ft ateral Deviator IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities Remarks: Boring was advanced to the 20 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 20 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 11.4 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

19 DRIIN 1 of 2 Hole 3B-5 Structure North Express Station ffset T Date 11/2/09 rnd ft 5 2 (6) 3 (6) FI, clay, brown and tan, gravelly, w/sand. (Fill) ateral Deviator % Passing No. 4 Sieve: 78 % Passing No. 200 Sieve: 52 PP = 1.25 tsf % Passing No. 4 Sieve: 98 % Passing No. 200 Sieve: 91 PP = 1.0 tsf (5.5) 50 (0.5) SAND, dense, brown, clayey, w/gravel. (Alluvium) (SC) IMESTNE, soft, tan, slightly weathered, w/discontinuities % Passing No. 4 Sieve: 69 % Passing No. 200 Sieve: 31 REC = 97%, RQD = 72% IMESTNE, hard to very hard, 50 (0.75) 50 (0.25) dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. REC = 97%, RQD = 60% (0.75) 50 (0.25) REC = 98%, RQD = 72% (0.125) 50 (0) REC = 98%, RQD = 62% (0.25) 50 (0.125) REC = 99%, RQD = 96% (0.25) 50 (0) REC = 97%, RQD = 93% 40 Remarks: Boring was advanced to the 10.5 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 10.5 ft, the boring was advanced to the 40.6 ft depth using wet drilling procedures. 24 hours after completion of the borehole, the waterlevel (drilling fluid) was measured at the 3.6 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

20 DRIIN 2 of 2 Hole 3B-5 Structure North Express Station ffset T Date 11/2/09 rnd ft ateral Deviator 50 (0.25) 50 (0.25) IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities Remarks: Boring was advanced to the 10.5 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 10.5 ft, the boring was advanced to the 40.6 ft depth using wet drilling procedures. 24 hours after completion of the borehole, the waterlevel (drilling fluid) was measured at the 3.6 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

21 DRIIN 1 of 2 Hole 3B-6 Structure North Express Station ffset RT Date 10/31/09 rnd ft (6) 7 (6) FI, clay, brown and tan, sandy, w/gravel. (Fill) CAY, soft, dark brown, sandy, w/gravel and calcareous particles. (Alluvium) (CH) ateral Deviator PP = 2.5 tsf % Passing No. 4 Sieve: 98 % Passing No. 200 Sieve: % Passing No. 4 Sieve: 98 % Passing No. 200 Sieve: 81 PP = 2.5 tsf % Passing No. 4 Sieve: (3.5) 50 (1.5) IMESTNE, soft, tan, slightly weathered, w/intermixed clay seams and discontinuities. % Passing No. 200 Sieve: 53 REC = 70%, RQD = 22% (0.5) 50 (0.5) IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. REC = 78%, RQD = 50% (0.5) 50 (0.5) REC = 80%, RQD = 50% (0.75) 50 (0.25) 14.0 REC = 70%, RQD = 37% (0.75) 50 (0.25) REC = 62%, RQD = 52% (0.75) 50 (0.25) REC = 80%, RQD = 50% (0) 50 (0.25) Remarks: Boring was advanced to the 10 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 10 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 1.3 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

22 DRIIN 2 of 2 Hole 3B-6 Structure North Express Station ffset RT Date 10/31/09 rnd ft ateral Deviator IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities Remarks: Boring was advanced to the 10 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 10 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 1.3 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

23 DRIIN 1 of 2 Hole 3B-7 Structure North Express Station ffset T Date 11/1/09 rnd ft 5 6 (6) 6 (6) FI, clay, brown and tan, sandy, w/gravel. (Fill) ateral Deviator PP = 2.75 tsf % Passing No. 4 Sieve: 85 % Passing No. 200 Sieve: % Passing No. 4 Sieve: 92 % Passing No. 200 Sieve: 85 PP = 2.0 tsf (2) 50 (0.5) SAND, dense, tan, clayey, w/limestone fragments. (Completely Weathered imestone) (SC) IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities % Passing No. 4 Sieve: 84 % Passing No. 200 Sieve: 31 REC = 80%, RQD = 57% (1) 50 (0.5) REC = 98%, RQD = 92% (0.5) 50 (0.125) REC = 98%, RQD = 75% (0.5) 50 (0.125) REC = 98%, RQD = 79% (0.25) 50 (0) REC = 95%, RQD = 72% (0.125) 50 (0) REC = 99%, RQD = 67% (1) 50 (0.5) Remarks: Boring was advanced to the 10 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 10 ft, the boring was advanced to the 40.2 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 6.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

24 DRIIN 2 of 2 Hole 3B-7 Structure North Express Station ffset T Date 11/1/09 rnd ft ateral Deviator IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities Remarks: Boring was advanced to the 10 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 10 ft, the boring was advanced to the 40.2 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 6.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

25 DRIIN 1 of 2 Hole 3B-8 Structure North Express Station ffset RT Date 11/1/09 rnd ft FI, clay, brown and tan, sandy, w/gravel. (Fill) ateral Deviator % Passing No. 4 Sieve: 94 % Passing No. 200 Sieve: (6) 6 (6) 50 (1) 50 (0.25) 50 (0.5) 50 (0.25) CAY, soft, dark brown, sandy, w/gravel and calcareous particles. (Alluvium) (CH) SAND, dense, tan, clayey, w/limestone fragments. (Completely Weathered imestone) (SC) IMESTNE, hard, tan, slightly weathered, w/intermixed clay seams and discontinuities. IMESTNE, very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities % Passing No. 4 Sieve: 96 % Passing No. 200 Sieve: 81 PP = 4.5 tsf SPT = 50/2'' % Passing No. 4 Sieve: 79 % Passing No. 200 Sieve: 38 REC = 65%, RQD = 22% REC = 83%, RQD = 37% (0.5) 50 (0.5) REC = 80%, RQD = 50% (0.25) 50 (0.25) REC = 93%, RQD = 82% (0.5) 50 (0.25) REC = 100%, RQD = 95% (0.25) 50 (0.25) REC = 93%, RQD = 90% (0.25) 50 (0.25) Remarks: Boring was advanced to the 10 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 10 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 6.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

26 DRIIN 2 of 2 Hole 3B-8 Structure North Express Station ffset RT Date 11/1/09 rnd ft IMESTNE, very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. ateral Deviator Remarks: Boring was advanced to the 10 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 10 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 6.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

27 DRIIN 1 of 2 Hole 3B-9 Structure North Express Station ffset T Date 11/1/09 rnd ft 5 9 (6) 11 (6) FI, clay, brown and tan, sandy, w/gravel, calcareous particles, and intermixed limestone fragments. (Fill) ateral Deviator PP = 1.5 tsf % Passing No. 4 Sieve: 94 % Passing No. 200 Sieve: 86 PP = 3.0 tsf 10 7 (6) 7 (6) % Passing No. 4 Sieve: 91 % Passing No. 200 Sieve: (6) 50 (2.5) PP = 3.5 tsf (6) 17 (6) CAY, stiff to hard, dark brown, sandy, w/intermixed gravel seams and calcareous particles. (Alluvium) (CH) % Passing No. 4 Sieve: 94 % Passing No. 200 Sieve: (5) 50 (3.5) PP = 4.5+ tsf (6) 50 (3.25) SAND, dense, tan, clayey, w/scattered gravel and calaceous particles. (Fluviatile Terrace Deposits) (SC) SPT = 24 bpf % Passing No. 4 Sieve: 88 % Passing No. 200 Sieve: (0.25) 50 (0.125) IMESTNE, very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. SPT = 50/1.5'' REC = 80%, RQD = 53% (0.5) 50 (0.25) Remarks: Boring was advanced to the 35 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 35 ft, the boring was advanced to the 55.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 16.4 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

28 DRIIN 2 of 2 Hole 3B-9 Structure North Express Station ffset T Date 11/1/09 rnd ft IMESTNE, very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. ateral Deviator REC = 98%, RQD = 72% (0.25) 50 (0.125) REC = 98%, RQD = 97% (0.25) 50 (0) REC = 98%, RQD = 80% (0.25) 50 (0.125) Remarks: Boring was advanced to the 35 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 35 ft, the boring was advanced to the 55.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 16.4 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

29 DRIIN 1 of 2 Hole 3B-10 Structure North Express Station ffset RT Date 10/31/09 rnd ft 5 9 (6) 10 (6) FI, clay, brown and tan, sandy, w/gravel, calcareous particles, and intermixed limestone fragments. (Fill) ateral Deviator PP = 2.75 tsf PP = 1.75 tsf % Passing No. 4 Sieve: 84 % Passing No. 200 Sieve: 75 PP = 4.5+ tsf (6) 20 (6) PP = 4.25 tsf (6) 13 (6) % Passing No. 4 Sieve: 77 % Passing No. 200 Sieve: (5.5) 50 (6) PP = 3.5 tsf (6) 9 (6) CAY, soft, brown to yellowish brown, gravelly, w/intermixed gravel seams, sand, and calcareous particles. (Fluviatile Terrace Deposits) (CH) % Passing No. 4 Sieve: 99 % Passing No. 200 Sieve: 90 SPT = 50/1.5'' (6) 50 (1.5) IMESTNE, soft to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities REC = 98%, RQD = 93% (0.5) 50 (0.25) REC = 95%, RQD = 83% (0.25) 50 (0.125) Remarks: Boring was advanced to the 30 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 30 ft, the boring was advanced to the 50.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 15.3 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

30 DRIIN 2 of 2 Hole 3B-10 Structure North Express Station ffset RT Date 10/31/09 rnd ft ateral Deviator IMESTNE, soft to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. REC = 95%, RQD = 82% (0.5) 50 (0.25) REC = 100%, RQD = 92% (0.25) 50 (0.125) Remarks: Boring was advanced to the 30 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 30 ft, the boring was advanced to the 50.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 15.3 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

31 DRIIN 1 of 2 Hole 3B-11 Structure North Express Station ffset T Date 11/1/09 rnd ft 5 9 (6) 11 (6) FI, clay, brown and tan, sandy, w/gravel, calcareous particles, and intermixed limestone fragments. (Fill) ateral Deviator PP = 1.5 tsf % Passing No. 4 Sieve: 88 % Passing No. 200 Sieve: % Passing No. 4 Sieve: 96 % Passing No. 200 Sieve: (6) 7 (6) PP = 4.5+ tsf (6) 50 (2.5) PP = 3.5 tsf (6) 17 (6) CAY, stiff to hard, brown to yellowish brown, gravelly, w/intermixed gravel seams, sand, and calcareous particles. (Fluviatile Terrace Deposits) (CH) % Passing No. 4 Sieve: 100 % Passing No. 200 Sieve: (5) 50 (3.5) PP = 4.5+ tsf SPT = 24 bpf (6) 50 (3.25) (0.25) 50 (0.125) IMESTNE, very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. SPT = 50/1.5'' REC = 80%, RQD = 53% (0.5) 50 (0.25) Remarks: Boring was advanced to the 35 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 35 ft, the boring was advanced to the 55.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 12.4 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

32 DRIIN 2 of 2 Hole 3B-11 Structure North Express Station ffset T Date 11/1/09 rnd ft IMESTNE, very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. ateral Deviator REC = 98%, RQD = 72% (0.25) 50 (0.125) REC = 98%, RQD = 97% (0.25) 50 (0) REC = 98%, RQD = 80% (0.25) 50 (0.125) Remarks: Boring was advanced to the 35 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 35 ft, the boring was advanced to the 55.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 12.4 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

33 DRIIN 1 of 1 Hole 3B-12 Structure North Express Station ffset T Date 11/11/09 rnd ft (6) 10 (6) 50 (0.5) 50 (0) FI, clay, brown and tan, sandy, w/gravel, calcareous particles, and intermixed limestone fragments. (Fill) CAY, soft, brown to yellowish brown, gravelly, w/intermixed gravel seams, sand, and calcareous particles. (Fluviatile Terrace Deposits) (CH) IMESTNE, soft to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. ateral Deviator % Passing No. 4 Sieve: 85 % Passing No. 200 Sieve: 63 PP = 2.5 tsf % Passing No. 4 Sieve: 91 % Passing No. 200 Sieve: 84 PP = 3.0 tsf SPT = 50/3.5'' REC = 58%, RQD = 20% (5) 50 (1.5) Remarks: Boring was advanced to the 10 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 10 ft, the boring was advanced to the 15.5 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 1.1 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

34 DRIIN 1 of 2 Hole 3B-13 Structure North Express Station ffset RT Date 11/9/09 rnd ft (6) 7 (6) FI, clay, brown and tan, sandy, w/gravel, calcareous particles, and intermixed limestone fragments. (Fill) CAY, soft, brown to yellowish brown, gravelly, w/intermixed gravel seams, sand, and calcareous particles. (Fluviatile Terrace Deposits) (C) ateral Deviator PP = 3.0 tsf % Passing No. 4 Sieve: 100 % Passing No. 200 Sieve: 91 PP = 4.0 tsf % Passing No. 4 Sieve: 80 % Passing No. 200 Sieve: (6) 9 (6) (4.25) 50 (1) RAVE, dense, yellowish brown, clayey, w/intermixed clay seams. (Fluviatile Terrace Deposits) % Passing No. 4 Sieve: 55 % Passing No. 200 Sieve: (3.25) 50 (1.75) IMESTNE, soft to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. SPT = 50/1'' REC = 88%, RQD = 40% (0.25) 50 (0.125) REC = 98%, RQD = 63% (2) 50 (1) REC = 95%, RQD = 83% (0.5) 50 (0.25) REC = 97%, RQD = 73% (0.25) 50 (0.125) Remarks: Boring was advanced to the 20 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 20 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 6.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

35 DRIIN 2 of 2 Hole 3B-13 Structure North Express Station ffset RT Date 11/9/09 rnd ft ateral Deviator IMESTNE, soft to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities Remarks: Boring was advanced to the 20 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 20 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 6.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

36 DRIIN 1 of 2 Hole 3B-14 Structure North Express Station ffset T Date 11/11/09 rnd ft 5 7 (6) 9 (6) FI, clay, brown and tan, sandy, w/gravel, calcareous particles, and intermixed limestone fragments. (Fill) ateral Deviator % Passing No. 4 Sieve: 93 % Passing No. 200 Sieve: 87 PP = 2.0 tsf PP = 4.5+ tsf (6) 10 (6) CAY, very soft to soft, brown to yellowish brown, gravelly, w/intermixed gravel seams, sand, and calcareous particles. (Fluviatile Terrace Deposits) (C) PP = 3.5 tsf % Passing No. 4 Sieve: 91 % Passing No. 200 Sieve: 85 PP = 2.0 tsf 15 4 (6) 4 (6) % Passing No. 4 Sieve: (2.5) 50 (0.5) IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities % Passing No. 200 Sieve: 81 REC = 98%, RQD = 27% (0.5) 50 (0.25) REC = 97%, RQD = 43% (0) 50 (0.25) REC = 93%, RQD = 32% (0.5) 50 (0) REC = 97%, RQD = 85% (0) 50 (0.25) Remarks: Boring was advanced to the 20 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 20 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 2.3 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

37 DRIIN 2 of 2 Hole 3B-14 Structure North Express Station ffset T Date 11/11/09 rnd ft 567. ateral Deviator IMESTNE, hard to very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities Remarks: Boring was advanced to the 20 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 20 ft, the boring was advanced to the 40.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 2.3 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg

38 DRIIN 1 of 1 Hole 3B-15 Structure North Express Station ffset RT Date 11/12/09 rnd ft (2) 50 (2) FI, clay, brown and tan, sandy, w/gravel. (Fill) CAY, stiff to hard, dark brown, sandy, w/gravel and calcareous particles. (Alluvium) (C) IMESTNE, very hard, dark gray, w/fossils, intermixed shale seams and layers, and discontinuities. ateral Deviator % Passing No. 4 Sieve: 87 % Passing No. 200 Sieve: 61 PP = 1.0 tsf % Passing No. 4 Sieve: 89 % Passing No. 200 Sieve: 67 REC = 65%, RQD = 38% (0.25) 50 (0.25) REC = 98%, RQD = 57% (0.5) 50 (0) Remarks: Boring was advanced to the 5 ft depth using dry drilling procedures and groundwater was not encountered above that depth. Below 5 ft, the boring was advanced to the 15.1 ft depth using wet drilling procedures. 24 hours after completion of the bor ehole, the waterlevel (drilling fluid) was measured at the 0.7 ft depth. Northing: , Easting: Driller: Terra Testing ogger: Fugro Consultants, Inc. rganization: Fugro Consultants, Inc. C:\Documents and Settings\JohnsonA\My Documents\NTE\Segment 3B Wincore and PDF ogs\nte, Segment 3B.clg