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Duke Lesley 3C-LR071115 Rone Eni~ 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299178 Project No.: 0711530 Date of Service: 09/19/2007 Report Date: 11/15/2007 Project: Point West Office I 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: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 5" 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 Mix Design 1.0.: 7752 PW Placement Date: 09/19/2007 Weather Conditions: Cloudy Time Sampled: 03:10am Temperature - Air: 760F Truck No: 110 Air Content: NA Overall Placement Location: Beltline Road I Highway 635 Measured Slump (inches) 5.0 Batch time: 03:03am Concrete: 800F Ticket No: 7420 Unit Weight (pet): NA Sample Location: South section-southeast corner, section 1 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 09/26/2007 7 6.00 28.27 74,520 2,640 Cone/Split 1 2 10/17/2007 28 6.00 28.27 102,440 3,620 Cone/Split 1 3 10/17/2007 28 6.00 28.27 101,490 3,590 Cone/Split Average 3,610 * 1 4 11/14/2007 56 6.00 28.27 106,280 3,760 Shear * 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 mailer provided by persons or conditions over which we have no control. Our lellers 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 wrillen approval of Rone Engineering Services, Ltd. (JC/JC) Page 1 of B Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 299178 Project No.: 0711530 Date of Service: 09/19/2007 Report Date: 11/15/2007 Project: Point West Office I 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: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 5" 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 Mix Design 1.0.: 7752 PW Placement Date: 09/19/2007 Weather Conditions: Cloudy Time Sampled: 04:00am Temperature - Air: 760F Truck No: 138 Air Content: NA Overall Placement Location: Beltline Road I Highway 635 Batch time: 03:42am Concrete: 800F Ticket No: 7425 Unit Weight (pct): NA Measured Slump (inches) 5.0 Sample Location: South section-center, section 1 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 09/26/2007 7 6.00 28.27 73,690 2,610 Cone/Split 2 2 10/17/2007 28 6.00 28.27 98,240 3,470 Shear 2 3 10/17/2007 28 6.00 28.27 103,900 3,670 Cone/Split Average 3,570 " 2 4 11/14/2007 56 6.00 28.27 110,330 3,900 Shear " 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. (JC/JC) Page 2 of 8 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, 518 600, Houston, TX 77040 4421 Freidrlch, 5te 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299178 Project No.: 0711530 Date of Service: 09/19/2007 Report Date: 11/15/2007 Project: Point West Office I 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: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 5" 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.: 7752 PW Placement Date: 09/19/2007 Weather Conditions: Cloudy Time Sampled: 05:00am Tern peratu re - Ai r: 760F Truck No: 109 Air Content: NA Overall Placement Location: Beltline Road I Highway 635 Batch time: 04:51am Concrete: 800F Ticket No: 7437 Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: South section-southwest corner, section 2 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 3 1 09/26/2007 7 6.00 28.27 76,190 2,690 Cone/Split 3 2 10/17/2007 28 6.00 28.27 125,210 4,430 Cone/Split 3 3 10/17/2007 28 6.00 28.27 122,390 4,330 Cone/Split Average 4,380 3 4 11/14/2007 56 6.00 28.27 136,140 4,810 Cone/Shear L1MITA TION5: 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. (JC/JC) Page 3 of8 Rone Eni~ 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 Freldrich, 8te 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299178 Project No.: 0711530 Date of Service: 09/19/2007 Report Date: 11/15/2007 Project: Point West Office I 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: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 5" 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 Mix Design 1.0.: 7752 PW Placement Date: 09/19/2007 Weather Conditions: Cloudy Time Sampled: 06:15am Temperature - Air: 780F Truck No: 109 Air Content: NA Overall Placement Location: Beltline Road I Highway 635 Measured Slump (inches) 5.0 Batch time: 06:05am Concrete: 820F Ticket No: 7447 Unit Weight (pet): NA Sample Location: South section-southeast corner, section 2 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 09/26/2007 7 6.00 28.27 95,000 3,360 Cone/Split 4 2 10/17/2007 28 6.00 28.27 125,220 4,430 Cone/Split 4 3 10/17/2007 28 6.00 28.27 119,570 4,230 Cone/Split Average 4,330 4 4 11/14/2007 56 6.00 28.27 133,060 4,710 Cone/Shear 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. (JC/JC) Page 4 of 8 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.: 299178 Project No.: 0711530 Date of Service: 09/19/2007 Report Date: 11/15/2007 Project: Point West Office I 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: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 5" 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.: 7752 PW Placement Date: 09/19/2007 Weather Conditions: Cloudy Time Sampled: 08:00am Temperature - Air: 780F Truck No: 110 Air Content: NA Overall Placement Location: Beltline Road I Highway 635 Batch time: 07:51am Concrete: 830F Ticket No: 7457 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: Center section-center, 3rd section 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) (inZ) (Ibs) (psi) Type 5 1 09/26/2007 7 6.00 28.27 103,560 3,660 Cone/Split 5 2 10/17/2007 28 6.00 28.27 143,120 5,060 Cone/Split 5 3 10/17/2007 28 6.00 28.27 140,080 4,950 Cone/Split Average 5,010 5 4 11/14/2007 56 6.00 28.27 156,470 5,530 Cone/Shear 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. (JCIJC) Page 5 of 8 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 n01 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299178 Project No.: 0711530 Date of Service: 09/19/2007 Report Date: 11/15/2007 Project: Point West Office I 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: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 5" 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.: 7752 PW Placement Date: 09/19/2007 Weather Conditions: Cloudy Time Sampled: 09:05am Temperature - Air: 820F Truck No: 140 Air Content: NA Overall Placement Location: Beltline Road I Highway 635 Batch time: 08:58am Concrete: 850F Ticket No: 7468 Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: Center section-north, northwest corner 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 09/26/2007 7 6.00 28.27 106,800 3,780 Cone/Split 6 2 10/17/2007 28 6.00 28.27 139,770 4,940 Cone/Split 6 3 10/17/2007 28 6.00 28.27 143,450 5,070 Cone/Split Average 5,010 6 4 11/14/2007 56 6.00 28.27 152,780 5,400 Cone/Shear 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. (JC/JC) Page 6 of B 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 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299178 Project No.: 0711530 Date of Service: 09/19/2007 Report Date: 11/15/2007 Project: Point West Office I Services: Obtain samples of fresh concrete at the placementlocalions, 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: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 5" 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 Mix Design I.D.: 7752 PW Placement Date: 09/19/2007 Weather Conditions: Cloudy Time Sampled: 10:27am Temperature - Air: 860F Truck No: NA Air Content: NA Overall Placement Location: Beltline Road I Highway 635 Measured Slump (inches) 5.0 Batch time: 09:51 am Concrete: 910F Ticket No: 59014101 Unit Weight (pet): NA Sample Location: North section-northeast corner 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 09/26/2007 7 6.00 28.27 73,980 2,620 Cone/Split 7 2 10/17/2007 28 6.00 28.27 100,090 3,540 Cone/Split 7 3 10/17/2007 28 6.00 28.27 97,510 3,450 Cone/Split Average 3,490 * 7 4 11/14/2007 56 6.00 28.27 107,710 3,810 Cone/Split * 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 variaUon in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or condiUons 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. (JCIJC) Page 7 of 8 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 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 299178 Project No.: 0711530 Date of Service: 09/19/2007 Report Date: 11/15/2007 Project: Point West Office I 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: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: 10 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 5" 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.: 7752 PW Placement Date: 09/19/2007 Weather Conditions: Cloudy Time Sampled: 11:21am Temperature - Air: 900F Truck No: 140 Air Content: NA Overall Placement Location: Beltline Road I Highway 635 Batch time: 11: 14am Concrete: 950F Ticket No: 7473 Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: North section-northwest corner 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 8 1 09/26/2007 7 6.00 28.27 73,320 2,590 Cone/Split 8 2 10/17/2007 28 6.00 28.27 98,120 3,470 Cone/Split 8 3 10/17/2007 28 6.00 28.27 99,970 3,540 Cone/Split Average 3,500 '" 8 4 11/14/2007 56 6.00 28.27 1 08,440 3,840 Shear '" Does not comply with specified strength Technician: Jason Shipe Started: 02:30am Report Distribution: Orig: Duke Construction, LP (Dallas, TX) Attn: Mr. Paul Byrne (1-ec copy) 1-cc Potter Concrete Attn: Mr. Ryan Skelly 1-cc City of Coppell Attn: Mr. Lee Stone 1-cc City of Coppell Altn: Mr. Larry Davis Finished: 01:00pm Rone Engineering ,~~ K. Scott Watson, AET Project Manager 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. (JC/JC) Page 8 of 8