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Duke Lesley-LR070913 (3) Rone Engineering ., Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 76247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freldrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/2007 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. PROJECT DATA Contractor: Concrete Supplier: Lacey Plant: On site Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Batch time: 06:10am Concrete: 800F Ticket No: NA Unit Weight (pef): NA Measured Slump (inches) 1.75 Mix Design 1.0.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 06:15am Temperature - Air: 780F Truck No: NA Air Content: 4.4% Overall Placement Location: Paving for Point West, Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Sample Location: Station 4+60, Point West REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 1 1 08/17/2007 3 6.00 28.27 73,980 2,620 Unbonded Cap 1 2 08/21/2007 7 6.00 28.27 84,000 2,970 Unbonded Cap 1 3 09/11/2007 28 6.00 28.27 99,950 3,530 Shear 1 4 09/11/2007 28 6.00 28.27 94,890 3,360 Shear Average 3,450 * * Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineertng Services, Ltd. (KW/KW) Page 1 of 10 Rone Engineering .. Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214)630-9745 Report of Concrete Compressive Strength Test Report No,: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/20(;)7 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Concrete Supplier: Lacey Plant: On site Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 07:15am Temperature - Air: 830F Truck No: NA Air Content: 4.7% Overall Placement Location: Paving for Point West, Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Batch time: 07:10am Concrete: 850F Ticket No: NA Unit Weight (pct): NA Measured Slump (inches) 1.5 Sample Location: Station 3+00, Point West REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked . Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 2 1 08/17/2007 3 6.00 28.27 78,180 2,770 Unbonded Cap 2 2 08/21/2007 7 6.00 28.27 87,760 3,100 Unbonded Cap 2 3 09/11/2007 28 6.00 28.27 104,650 3,700 Cone/Split 2 4 09/11/2007 28 6.00 28.27 93,660 3,310 Cone/Split Average 3,510 .. * Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation In quality (compositIon, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (KW/KW) Page 2 of 10 Rone Engineering ., Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 B90B Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600. Houston, TX 77040 4421 Freldrlch, Ste 195. Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/2007 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. PROJECT DATA Contractor: Concrete Supplier: Lacey Plant: On site Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" maximim Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Batch time: 09:25am Concrete: 800F Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 1.0 Mix Design I.D.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 09:30am Temperature - Air: 850F Truck No: NA Air Content: 3.9% Overall Placement Location: Paving for Point West, Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Sample Location: Station 2+00, Point West REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 3 1 08/17/2007 3 6.00 28.27 76,290 2,700 Unbonded Cap 3 2 08/21/2007 7 6.00 28.27 83,170 2,940 Unbonded Cap 3 3 09/11/2007 28 6.00 28.27 104,490 3,700 Cone/Split 3 4 09/11/2007 28 6.00 28.27 108,990 3.850 Cone/Shear Average 3,780 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except In full without the written approval of Rene Engineering Services, Ltd. (KW/KW) Page 3 of 10 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 76247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214)630-9745 Report of Concrete Compressive Strength Test Report No.: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/2007 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Concrete Supplier: Lacey Plant: On site Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" maximum Air ('Yo): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 11 :50am Temperature - Air: 940F Truck No: NA Air Content: 4.6% Overall Placement Location: Paving for Point West, Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Batch time: 11 :45am Concrete: 980F Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 1.25 Sample Location: Station 2+50, Dividend Street REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 4 1 08/17/2007 3 6.00 28.27 71,570 2,530 Unbonded Cap 4 2 08/21/2007 7 6.00 28.27 78,740 2,780 Unbonded Cap 4 3 09/11/2007 28 6.00 28.27 95,890 3,390 Shear 4 4 09/11/2007 28 6.00 28.27 100,280 3,550 Cone/Shear Average 3,470 .. .. Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specifIC samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reporls are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written epproval of Rone Engineering Services, Ltd. (KW/KW) Page 4 of 10 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freldrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/2007 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Concrete Supplier: Lacey Plant: On site Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 12:20pm Temperature - Air: 100DF Truck No: NA Air Content: 3.2% Overall Placement Location: Paving for Point West, Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Batch time: 12:15pm Concrete: 99DF Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 0.75 Sample Location: Station 4+00, Dividend Street REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 5 1 08/17/2007 3 6.00 28.27 69,640 2,460 Unbonded Cap 5 2 08/21/2007 7 6.00 28.27 75,470 2,670 Unbonded Cap 5 3 09/11/2007 28 6.00 28.27 94,280 3,330 Cone/Split 5 4 09/11/2007 28 6.00 28.27 86,620 3,060 Cone/Shear Average 3,200 · · Does not comply with specified strength LIMITATIONS: The test results presenled herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature or similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except In full without the written approval of Rone Engineering Services, Ltd. (KW/KW) Page 5 of 10 Rone Engineering '" Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W L.lttle York, Ste 600, Houston, TX 77040 4421 Freldrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/2007 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testIng, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. PROJECT DATA Contractor: Concrete Supplier: Lacey Plant: On site Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" maximum Air (0/0): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Batch time: 01:10pm Concrete: 1010F Ticket No: NA Unit Weight (pcf): NA Measured Slump (inches) 1.0 Mix Design 1.0.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 01:15pm Temperature - Air: 1000F Truck No: NA Air Content: 3.8% Overall Placement Location: Paving for Point West, Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Sample Location: Station 5+00, Dividend Street REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in") (Ibs) (psi) Type 6 1 08/17/2007 3 6.00 28.27 75,810 2,680 Unbonded Cap 6 2 08/21/2007 7 6.00 28.27 87,080 3,080 Unbonded Cap 6 3 09/11/2007 28 6.00 28.27 104,820 3,710 Cone/Split 6 4 09/11/2007 28 6.00 28.27 97,940 3,460 Cone/Split Average 3,590 * * Does not comply with specified strength UMITA TIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responslblllty for variation In quality (composition, appeerance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except In full without the written approval of Rone Engineering Services, Ltd. (KWIKW) Page 6 of 10 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 B90B Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freldrlch, Ste 195, Austin, TX 7B744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/2007 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Concrete Supplier: Lacey Plant: On site Specification ReqUirements S"rength: 3,600 psi @ 28 days Slump (in.): 4" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 03:05pm Temperature - Air: 1030F Truck No: NA Air Content: 3.2% Overall Placement Location: Paving for Point West, Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Batch time: 03:00pm Concrete: 1000F Ticket No: NA Unit Weight (pct): NA Measured Slump (inches) 0.5 Sample Location: Station 7+90, Dividend Street REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (In) (In2) (Ibs) (psi) Type 7 1 08/17/2007 3 6.00 28.27 72,190 2,550 Unbonded Cap 7 2 08/21/2007 7 6.00 28.27 79,090 2,800 Unbonded Cap 7 3 09/11/2007 28 6.00 28.27 96,670 3,420 Cone/Split 7 4 09/11/2007 28 6.00 28.27 92,270 3,260 Cone/Shear Average 3,340 * * Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation In quality (composition, appearance, etc,) or any other feature of similar SUbject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (KW/KW) Page 7 of 10 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freldrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630.9745 Report of Concrete Compressive Strength Test Report No.: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/2007 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Concrete Supplier: Lacey Plant: On site Specification Requirements Strength: 3."00 psi @ 28 days Slump (in.): 4" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 04:00pm Temperature - Air: 1020F Truck No: NA Air Content: 4.3% Overall Placement Location: Paving for Point West. Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Batch time: 03:50pm Concrete: 1000F Ticket No: NA Unit Weight (pet): t:-JA Measured Slump (inches) 1.75 Sample Location: Station 11 +00 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set' No. Tested (days) (in) (In') (Ibs) (psi) Type 8 1 08/17/2007 3 6.00 28.27 76,290 2,700 Unbonded Cap 8 2 08/21/2007 7 6.00 28.27 84,580 2,990 Unbonded Cap 8 3 09/11/2007 28 6.00 28.27 107,120 3,790 Cone/Split 8 4 09/11/2007 28 6.00 28.27 103,470 3,660 Cone/Split Average 3,720 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation In quality (composition, appearance, etc,) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rorie Engineering Services, ltd. (KW/KW) Page 8 of 10 Rone Engineering " Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 B90S Ambassador Row, Dallas, TX 75247 7701 W Little York, 8te 600, Houston, TX 77040 4421 Freldrlch, 8te 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/2007 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Concrete Supplier: Lacey Plant: On site Specification Requirements Strength: 3,600 psi @ 28 daYf Slump (in.): 4" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 04:45pm Temperature - Air: 1000F Truck No: NA Air Content: 4.5% Overall Placement Location: Paving for Point West, Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Batch time: 04:40pm Concrete: 1010F Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 1.0 Sample Location: Station 14+00, Dividend Street REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 9 1 08/17/2007 3 6.00 28.27 72,310 2,560 Unbonded Cap 9 2 08/21/2007 7 6.00 28.27 83,540 2,950 Unbonded Cap 9 3 09/11/2007 28 6.00 28.27 95,650 3,380 Cone/Split 9 4 09/11/2007 28 6.00 28.27 94,180 3,330 Cone/Split Average 3,360 * * Does not' comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specifIC samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our leUers and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except In full without the wriUen approval of Rone Engineering Services. Ltd. (KWIKW) Page 9 of 10 Rone Engineering ., Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 76247 7701 W Little York, Sm 600, Houston, TX 77040 4421 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630.9745 Report of Concrete Compressive Strength Test Report No.: 295598 Project No.: 0612510 Date of Service: 08/14/2007 Report Date: 09/13/2007 Project: Lesley Infrastructure Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. PROJECT DATA Contractor: Concrete Supplier: Lacy Plant: On site Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Batch time: 05:25am Concrete: 980F Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 1.25 Mix Design 1.0.: 5194 Placement Date: 08/14/2007 Weather Conditions: Clear Time Sampled: 05:30am Tem:'Ierature - Air: 990F Truck No: NA Air Content: 4.3% Overall Placement Location: Paving for Point West, Station 5+07-0+70, Dividend Street, westbound Station 2+00-18+00 Sample Location: Station 16+25, Dividend Street REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 10 1 08/17/2007 3 6.00 28.27 72,740 2,570 Unbonded Cap 10 2 08/21/2007 7 6.00 28.27 85,190 3,010 Unbonded Cap 10 3 09/11/2007 28 6.00 28.27 99,790 3,530 Cone/Split 10 4 09/11/2007 28 6.00 28.27 101,290 3,580 Cone/Split Average 3,560 · · Does not comply with specified strength Report Distribution: Orig: Duke Construction. LP (Dallas, TX) Attn: Mr. Alex Bennett PE (1-ec copy) 1-cc City of Coppell Attn: Mr. Larry Davis 1-ec Lacy Construction Attn: Mr. Kevin Briles 1-cc City of Coppell Attn: Mr. Lee Stone Rone Engineering S"_295538fo'."''''d,"lIm.~ ~ ~ K. Scott Watson, AET Project Manager Technician: Ryan Rawlinson UMITATIONS: The lest results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, elc.) or any other feature of similar subject matter provided by persons or condlllons over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the wrltten approval of Rone Engineering Services, Ltd. (KW/KW) Page 10 of 10