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Duke Lesley 2A-LR071211 Rone En~== 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 303893 Project No.: 0712932 Date of Service: 11/01/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/01/2007 Weather Conditions: Clear Time Sampled: 05:20am Temperature - Air: 460F Truck No: 106 Air Content: 4.3% Overall Placement Location: Paving at Point West V11 (Northwest corner orf trailer parking traveling west into street) Batch time: 04:59am Concrete: 800F Ticket No: 8679 Unit Weight (pet): NA Measured Slump (inches) 5.75 Sample Location: 30' north, 10' west from southeast corner of paving 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 11/08/2007 7 6.00 28.27 81 ,190 2,870 Cone/Shear 1 2 11/29/2007 28 6.00 28.27 118,330 4,190 Shear 1 3 11/29/2007 28 6.00 28.27 119,810 4,240 Shear Average 4,210 1 4 12/27/2007 56 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. (CH/ED) Page 1 of 6 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 303893 Project No.: 0712932 Date of Service: 11/01/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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: 06:41 am Concrete: 800F Ticket No: 8689 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Mix Design 1.0.: 7753 PW Placement Date: 11/01/2007 Weather Conditions: Clear Time Sampled: 07:00am Temperature - Air: 500F Truck No: 107 Air Content: 4.5% Overall Placement Location: Paving at Point West V11 (Northwest corner orf trailer parking traveling west into street) Sample Location: 75' north, 20' west from southeast corner of paving 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 2 1 11/08/2007 7 6.00 28.27 86,550 3,060 Cone/Split 2 2 11/29/2007 28 6.00 28.27 142,960 5,060 Cone/Split 2 3 11/29/2007 28 6.00 28.27 138,410 4,900 Cone/Shear Average 4,980 2 4 12/27/2007 56 Remarks: Water added at site: 5 gallons 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. (CH/ED) Page 2 of 6 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 303893 Project No.: 0712932 Date of Service: 11/01/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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 Measured Slump (inches) 5.5 Mix Design I.D.: 7753 PW Placement Date: 11/01/2007 Weather Conditions: Sunny, clear Time Sampled: 08:10am Batch time: 07:49am Temperature - Air: 550F Concrete: 820F Truck No: 141 Ticket No: 8698 Air Content: 4.6% Unit Weight (pet): NA Overall Placement Location: Paving at Point West V11 (Northwest corner orf trailer parking traveling west into street) Sample Location: 11 0' north, 40' west from southeast corner of paving 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 11/08/2007 7 6.00 28.27 109,620 3,880 Cone/Split 3 2 11/29/2007 28 6.00 28.27 159,980 5,660 Cone/Split 3 3 11/29/2007 28 6.00 28.27 164,290 5,810 Cone/Split Average 5,730 3 4 12/27/2007 56 Remarks: Water added at site: 5 gallons 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 repnoduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/ED) Page 3 of 6 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 303893 Project No.: 0712932 Date of Service: 11/01/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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 Measured Slump (inches) 5.75 Mix Design 1.0.: 7753 PW Placement Date: 11/01/2007 Weather Conditions: Sunny, partly cloudy Time Sampled: 09:30am Batch time: 09:13am Temperature - Air: 600F Concrete: 850F Truck No: 106 Ticket No: 8707 Air Content: 4.4% Unit Weight (pet): NA Overall Placement Location: Paving at Point West V11 (Northwest corner orf trailer parking traveling west into street) Sample Location: 180' north, 15' west from southeast corner of paving 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 11/08/2007 7 6.00 28.27 113,960 4,030 Cone/Split 4 2 11/29/2007 28 6.00 28.27 159,110 5,630 Cone/Split 4 3 11/29/2007 28 6.00 28.27 163,670 5,790 Cone/Split Average 5,710 4 4 12/27/2007 56 Remarks: Water added at site: 10 gallons 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. (CH/ED) Page 4 of 6 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 303893 Project No.: 0712932 Date of Service: 11/01/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/01/2007 Weather Conditions: Sunny, partly cloudy Time Sampled: 11 AOam Batch time: 11 :28am Temperature - Air: 600F Concrete: 860F Truck No: 127 Ticket No: 15453 Air Content: 4.1 % Unit Weight (pet): NA Overall Placement Location: Paving at Point West V11 (Northwest corner orf trailer parking traveling west into street) Measured Slump (inches) 5.0 Sample Location: 250' north, 5' west from southeast corner of paving 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 11/08/2007 7 6.00 28.27 91,110 3,220 Cone/Split 5 2 11/29/2007 28 6.00 28.27 135,920 4,810 Cone/Split 5 3 11/29/2007 28 6.00 28.27 136,860 4,840 Cone/Split Average 4,820 5 4 12/27/2007 56 Remarks: Water added at site: 10 gallons 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. (CH/ED) Page 5 of 6 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 303893 Project No.: 0712932 Date of Service: 11/01/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/01/2007 Weather Conditions: Sunny, partly cloudy Time Sampled: 12:15pm Batch time: 11:59am Temperature - Air: 650F Concrete: 860F Truck No: 106 Ticket No: 8721 Air Content: 4.0% Unit Weight (pct): NA Overall Placement Location: Paving at Point West V11 (Northwest corner orf trailer parking traveling west into street) Measured Slump (inches) 5.25 Sample Location: 300' north, 25' west from southeast corner of paving 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 11/08/2007 7 6.00 28.27 91,980 3,250 Cone/Split 6 2 11/29/2007 28 6.00 28.27 137.710 4,870 Cone/Split 6 3 11/29/2007 28 6.00 28.27 134,880 4,770 Cone/Split Average 4,820 6 4 12/27/2007 56 Remarks: Water added at site: 5 gallons Technician: Montreal Bailey 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 Attn: Mr. Larry Davis Started: 04:45am Finished: 02:30pm Rone Engineering P-~ ;::;> 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. (CHfED) Page 6 of 6 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304416 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 5,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): NA 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.: 9385 Placement Date: 11/05/2007 Weather Conditions: Sunny, clear Time Sampled: 02:15pm Batch time: 01:44pm Temperature - Air: 820F Concrete: 920F Truck No: 130 Ticket No: 8847 Air Content: NA Unit Weight (pcf): NA Overall Placement Location: Panels Measured Slump (inches) 4.0 Sample Location: Panel P-56 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 11/08/2007 3 6.00 28.27 105,310 3,720 Cone/Split 1 2 11/12/2007 7 6.00 28.27 127,990 4,530 Cone/Split 1 3 12/03/2007 28 6.00 28.27 155,000 5,480 Cone/Split 1 4 12/03/2007 28 6.00 28.27 162,220 5,740 Cone/Split Average 5,610 1 5 12/31/2007 56 Technician: Montreal Bailey Rone Engineering See Report 304290 for technician time~ ~ Report Distribution: . ~. Orig: Duke Construction, LP (Dallas, TX) Attn: Mr. Paul Byrne . . _ . _ (1-ec copy) - - 1-cc P?tter Concrete Attn: Mr Ryan Skelly K. Scott Watson, AET 1-cc City of Coppell Attn: Mr. Lee Stone P . ct M .' roJe anager 1-cc City of Coppell Attn: Mr. Larry DavIs ~ 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. (TMlED) Page 1 of 1 Rone Engineering . 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, 8te 600, Houston, TX 77040 4421 Freidrich, 8te 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.: 301922 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 Specification Requirements Strength: 3,000 psi @ 28 days Slump (in.): NA Air (%): NA 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.: 7751 PW Placement Date: 10/12/2007 Weather Conditions: Clear Time Sampled: 11 :20am Temperature - Air: 760F Truck No: 125 Air Content: NA Overall Placement Location: Building piers Al1.95, 2.4, 3, 3.3, 3.B, 4.2, 4.B, 5.2, 5.B, 6.2 Batch time: 1 0:48am Concrete: 800F Ticket No: 14800 Unit Weight (pcf): NA Measured Slump (inches) 6.25 Sample Location: Same as above 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 1 1 10/19/2007 7 6.00 28.27 89,850 3,180 Shear 1 2 10/19/2007 7 6.00 28.27 93,620 3,310 Shear Average 3,240 1 3 11/09/2007 28 6.00 28.27 117,740 4,160 Shear 1 4 11/09/2007 28 6.00 28.27 131,670 4,660 Cone/Split Average 4,410 1 5 12/07/2007 56 6.00 28.27 132,270 4,680 Cone/Split Remarks: Water added at site: 25 gallons (before sample by Potter Concrete) Technician: Chris Harbour Rone Engineering See Report 301921 for technician time~~ Report Distribution: . . ...~ Orig: Duke Construction, LP (Dallas, TX) Attn: Mr. Paul Byrne . .. ... ~ (1-eccopy) - 1-cc P~tter Concrete Attn: Mr Ryan Skelly K. Scott Watson, AET 1-cc City of Coppell Attn: Mr. Lee Stone P .ect Mar 1-cc City of Coppell Attn: Mr. Larry Davis roJ an ge 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, LId. (CH/ED) Page 1 of 1 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 305138 Project No.: 0712932 Date of Service: 11/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.: 7753 PW Placement Date: 11/12/2007 Weather Conditions: Cloudy, light wind Time Sampled: 03:05am Batch time: 02:50am Temperature - Air: 620F Concrete: 750F Truck No: 140 Ticket No: 925 Air Content: 4.4% Unit Weight (pet): NA Overall Placement Location: Paving _ southwest section of south parking lot, south side of building 7 Measured Slump (inches) 5.0 Sample Location: 130' east, 75' south from southwest corner of building 7 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 11/19/2007 7 6.00 28.27 111,590 3,950 Cone/Split 1 2 12/10/2007 28 6.00 28.27 148,750 5,260 Shear 1 3 12/10/2007 28 6.00 28.27 147,310 5,210 Shear Average 5,240 1 4 01/07/2008 56 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. (KWIED) Page 1 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 305138 Project No.: 0712932 Date of Service: 11/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.: 7753 PW Placement Date: 11/12/2007 Weather Conditions: Cloudy, windy Time Sampled: 04:10am Batch time: 03:53am Temperature - Air: 620F Concrete: 740F Truck No: 40 Ticket No: 9034 Air Content: 4.5% Unit Weight (pet): NA Overall Placement Location: Paving - southwest section of south parking lot, south side of building 7 Measured Slump (inches) 5.0 Sample Location: 175' east, 80' south from southwest corner of building 7 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 2 1 11/19/2007 7 6.00 28.27 112,230 3,970 Cone/Split 2 2 12/10/2007 28 6.00 28.27 144,950 5,130 Cone/Split 2 3 12/10/2007 28 6.00 28.27 150,840 5,330 Shear Average 5,230 2 4 01/07/2008 56 Remarks: Water added at site: 10 gallons 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/ED} Page 2 of 9 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, 8te 600, Houston, TX 77040 4421 Freidrich, 8te 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 305138 Project No.: 0712932 Date of Service: 11/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.: 7753 PW Placement Date: 11/12/2007 Weather Conditions: Cloudy, windy Time Sampled: 05:25am Batch time: 05:09am Temperature - Air: 610F Concrete: 760F Truck No: 109 Ticket No: 9045 Air Content: 4.4% Unit Weight (pcf): NA Overall Placement Location: Paving _ southwest section of south parking lot, south side of building 7 Measured Slump (inches) 4.5 Sample Location: 230' east, 80' south from southwest corner of building 7 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 11/19/2007 7 6.00 28.27 109,240 3,860 Cone/Split 3 2 12/10/2007 28 6.00 28.27 141,360 5,000 Cone/Split 3 3 12/10/2007 28 6.00 28.27 147,250 5,210 Cone/Split Average 5,100 3 4 01/07/2008 56 Remarks: Water added at site: 10 gallons 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/ED) Page 3 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 305138 Project No.: 0712932 Date of Service: 11/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.: 7753 PW Placement Date: 11/12/2007 Weather Conditions: Cloudy, windy Time Sampled: 06:40am Batch time: 06:19am Temperature - Air: 640F Concrete: 760F Truck No: 138 Ticket No: 9055 Air Content: 4.6% Unit Weight (pet): NA Overall Placement Location: Paving _ southwest section of south parking lot, south side of building 7 Measured Slump (inches) 5.0 Sample Location: 300' east, 70' south from southwest corner of building 7 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 11/19/2007 7 6.00 28.27 105,090 3,720 Cone/Split 4 2 12/10/2007 28 6.00 28.27 146,340 5,180 Shear 4 3 12/10/2007 28 6.00 28.27 138,910 4,910 Cone/Split Average 5,040 4 4 01/07/2008 56 Remarks: Water added at site: 10 gallons LIMITATION S: 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/ED) Page 4 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 305138 Project No.: 0712932 Date of Service: 11/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.: 7753 PW Placement Date: 11/12/2007 Weather Conditions: Cloudy, windy Time Sampled: 07:45am Batch time: 07:33am Temperature - Air: 69DF Concrete: 76DF Truck No: 110 Ticket No: 9065 Air Content: 4.4% Unit Weight (pet): NA Overall Placement Location: Paving _ southwest section of south parking lot, south side of building 7 Measured Slump (inches) 5.5 Sample location: 380' east, 85' south from southwest corner of building 7 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 11/19/2007 7 6.00 28.27 100,000 3,540 Cone/Shear 5 2 12/10/2007 28 6.00 28.27 135,320 4,790 Cone/Shear 5 3 12/10/2007 28 6.00 28.27 139,510 4,930 Shear Average 4,860 5 4 01/07/2008 56 Remarks: Water added at site: 10 gallons 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/ED) Page 5 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 305138 Project No.: 0712932 Date of Service: 11/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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 Specificdtion Req uirements 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-1 064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 7753 PW Placement Date: 11/12/2007 Weather Conditions: Cloudy, light rain Time Sampled: 09:20am Batch time: 08:58am Temperature - Air: 700F Concrete: 790F Truck No: 138 Ticket No: 9075 Air Content: 4.5% Unit Weight (pct): NA Overall Placement Location: Paving _ southwest section of south parking lot, south side of building 7 Measured Slump (inches) 5.0 Sample Location: 425' east, 85' south from southwest corner of building 7 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 11/19/2007 7 6.00 28.27 95,550 3,380 Cone/Split 6 2 12/10/2007 28 6.00 28.27 131,930 4,670 Cone/Split 6 3 12/10/2007 28 6.00 28.27 131 ,560 4,650 Shear Average 4,660 6 4 01/07/2008 56 Remarks: Water added at site: 10 gallons 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/ED) Page 6 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 305138 Project No.: 0712932 Date of Service: 11/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.: 7753 PW Placement Date: 11/12/2007 Weather Conditions: Cloudy, windy Time Sampled: 10:25am Batch time: 10:10am Temperature - Air: 750F Concrete: 790F Truck No: 138 Ticket No: 9085 Air Content: 4.6% Unit Weight (pet): NA Overall Placement Location: Paving _ southwest section of south parking lot, south side of building 7 Measured Slump (inches) 5.0 Sample Location: 480' east, 85' south from southwest corner of building 7 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 11/19/2007 7 6.00 28.27 89,640 3,170 Cone/Shear 7 2 12/10/2007 28 6.00 28.27 129,900 4,590 Cone/Split 7 3 12/10/2007 28 6.00 28.27 129,510 4,580 Shear Average 4,590 7 4 01/07/2008 56 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/ED) Page 7 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 305138 Project No.: 0712932 Date of Service: 11/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.: 7753 PW Placement Date: 11/12/2007 Weather Conditions: Cloudy, windy Time Sampled: 11 :20am Batch time: Temperature - Air: 780F Concrete: 810F Truck No: 130 Ticket No: 9095 Air Content: 4.6% Unit Weight (pct): NA Overall Placement Location: Paving _ southwest section of south parking lot, south side of building 7 Measured Slump (inches) 5.0 Sample Location: 530' east, 80' south from southwest corner of building 7 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 11/19/2007 7 6.00 28.27 95,410 3,370 Cone/Split 8 2 12/10/2007 28 6.00 28.27 137,640 4,870 Cone/Split 8 3 12/10/2007 28 6.00 28.27 136,360 4,820 Cone/Split Average 4,850 8 4 01/07/2008 56 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. (KWfED) Page 8 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 305138 Project No.: 0712932 Date of Service: 11/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.: 7753 PW Placement Date: 11/12/2007 Weather Conditions: Partly cloudy, windy Time Sampled: 12:15pm Batch time: 11:58am Temperature - Air: 800F Concrete: 810F Truck No: 130 Ticket No: 9103 Air Content: 4.5% Unit Weight (pet): NA Overall Placement Location: Paving - southwest section of south parking lot, south side of building 7 Measured Slump (inches) 5.0 Sample Location: 560' east, 75' south from southwest corner of building 7 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 11/19/2007 7 6.00 28.27 98,310 3,480 Shear 9 2 12/10/2007 28 6.00 28.27 150,270 5,310 Cone/Split 9 3 12/10/2007 28 6.00 28.27 132,900 4,700 Cone/Split Average 5,010 9 4 01/07/2008 56 Finished: 013~;;;; ~ K. Scott Watson, AET Project Manager Technician: Pat Parks 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 Attn: Mr. Larry Davis 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/ED) Page 9 of 9 Rone Engineering . 8908 Ambassador Row, Dallas, TX 75247 7701 W Little Yorl<, Ste 600, Houston, TX 77040 4421 Freidrich, 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.: 304067 Project No.: 0712932 Date of Service: 11/02/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: Redi Mix Plant: 136 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): NA Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1 064 ASTM C-138 ASTM C-39 Mix Design 1.0.: L40N980A Placement Date: 11/02/2007 Weather Conditions: Clear Time Sampled: 04:45am Temperature - Air: 450F Truck No: 1039 Air Content: 5.5% Overall Placement Location: Lightweight concrete panels at Point West V11 - 1 st mix - panels P28, 44, 56, 59, 60, 61, 62, 63 - 380 yards Batch time: 04: 15am Concrete: 800F Ticket No: 13600891 Unit Weight (pet): NA Measured Slump (inches) 5.5 Sample Location: P-44 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 11/09/2007 7 6.00 28.27 121,250 4,290 Shear 1 2 11/30/2007 28 6.00 28.27 159,300 5,630 Cone/Split 1 3 11/30/2007 28 6.00 28.27 163,720 5,790 Cone/Split Average 5,710 1 4 12/28/2007 56 LIMIT A nONS: 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. (CHfED) Page 1 of 4 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 304067 Project No.: 0712932 Date of Service: 11/02/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: Redi Mix Plant: 136 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): NA 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.: L40N980A Placement Date: 11/02/2007 Weather Conditions: Clear Time Sampled: 05:30am Temperature - Air: 500F Truck No: 1035 Air Content: 5.8% Overall Placement Location: Lightweight concrete panels at Point West V11 - 1 st mix - panels P28, 44, 56, 59, 60, 61, 62, 63 - 380 yards Batch time: 04:57am Concrete: 800F Ticket No: 13600898 Unit Weight (pet): NA Measured Slump (inches) 5.25 Sample Location: P-59 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 11/09/2007 7 6.00 28.27 121,390 4,290 Cone/Split 2 2 11/30/2007 28 6.00 28.27 170,450 6,030 Cone/Split 2 3 11/30/2007 28 6.00 28.27 167,380 5,920 Shear Average 5,970 2 4 12/28/2007 56 Remarks: Water added at site: 10 gallons 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. (CH/ED) Page 2 of 4 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 304067 Project No.: 0712932 Date of Service: 11/02/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: Redi Mix Plant: 136 Specification Req uirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): NA 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.: L40N980A Placement Date: 11/02/2007 Weather Conditions: Sunny, clear Time Sampled: 08:30am Batch time: 07:59am Temperature - Air: 550F Concrete: 840F Truck No: 1190 Ticket No: 13600926 Air Content: 5.1 % Unit Weight (pet): NA Overall Placement Location: Lightweight concrete panels at Point West V11 - 1 st mix - panels P28, 44, 56, 59, 60, 61,62,63 - 380 yards Measured Slump (inches) 5.0 Sample Location: P-63 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 11/09/2007 7 6.00 28.27 147,100 5,200 Cone/Split 3 2 11/30/2007 28 6.00 28.27 182,410 6,450 Shear 3 3 11/30/2007 28 6.00 28.27 198,130 7,010 Cone/Split Average 6,730 3 4 12/28/2007 56 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. (CH/ED) Page 3 of 4 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304067 Project No.: 0712932 Date of Service: 11/02/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: Redi Mix Plant: 136 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): NA 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 Measured Slump (inches) 5.25 Mix Design I.D.: L40N980A Placement Date: 11/02/2007 Weather Conditions: Sunny, partly cloudy Time Sampled: 10:40am Batch time: 09:51am Temperature - Air: 600F Concrete: 860F Truck No: 1187 Ticket No: 13600943 Air Content: 5.8% Unit Weight (pet): NA Overall Placement Location: Lightweight concrete panels at Point West V11 - 1 st mix - panels P28, 44, 56, 59, 60, 61, 62, 63 - 380 yards Sample Location: P-61 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 4 1 11/09/2007 7 6.00 28.27 107,350 3,800 Shear 4 2 11/30/2007 28 6.00 28.27 151,070 5,340 Cone/Split 4 3 11/30/2007 28 6,00 28.27 135,630 4,800 Cone/Split Average 5,070 4 4 12/28/2007 56 Technician: Montreal Bailey Rone Engineering See Report 304066 for technician time~ ~ Report Distribution: . ~ Orig: Duke Construction, LP (Dallas, TX) Attn: Mr. Paul Byrne .. .. . . . . (1-ec copy) . .- 1-cc P?tter Concrete Attn: Mr Ryan Skelly K. Scott Watson AET 1-cc City of Coppell Attn: Mr. Lee Stone p 'eel M ' 1-cc City of Coppell Attn: Mr. Larry Davis rOJ anager ~ 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. (CH/ED) Page 4 of 4 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301764 Project No.: 0712932 Date of Service: 10/11/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 Specification Requirements Strength: 3,000 psi @ 28 days Slump (in.): NA Air (%): NA 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.: 7751 PW Placement Date: 10/11/2007 Weather Conditions: Clear Time Sampled: 09:10am Temperature - Air: 720F Truck No: 139 Air Content: NA Overall Placement Location: Building piers Batch time: 08:24am Concrete: 810F Ticket No: 14682 Unit Weight (pet): NA Measured Slump (inches) 7.0 Sample Location: Pier G.8/30 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 1 1 10/18/2007 7 6.00 28.27 99,060 3,500 Shear 1 2 10/18/2007 7 6.00 28.27 94,960 3,360 Shear Average 3,430 1 3 11/08/2007 28 6.00 28.27 131,640 4,660 Cone/Split 1 4 11/08/2007 28 6.00 28.27 127,860 4,520 Cone/Split Average 4,590 1 5 12/06/2007 56 6.00 28.27 143,420 5,070 Cone/Split Technician: Chris Harbour Rone Engineering See Report 301763 for technician time~ ~ Report Distribution: . .. ~~ Orig: Duke Construction, LP (Dallas, TX) Attn: Mr. Paul Byrne . .. - - -- - ~ (1-eccopy) - - - 1-cc p~tter Concrete Attn: Mr Ryan Skelly K. Scott Watson AET 1-cc City of Coppell Attn: Mr. Lee Stone P . t M ' 1-cc City of Coppell Attn: Mr. Larry Davis rOJec anager 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 dients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (LB/ED) Page 1 of 1 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304300 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: Redi-Mix Plant: P136 Specification Req uirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA 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.: 340K1501 Placement Date: 11/05/2007 Weather Conditions: Clear Time Sampled: 05:13am Temperature - Air: 630F Truck No: 1188 Air Content: NA Overall Placement Location: Tilt wall panels 77-87 Batch time: 04:55am Concrete: 810F Ticket No: 13601009 Unit Weight (pet): NA Measured Slump (inches) 5.5 Sample Location: Southwest corner of tilt wall panel 80 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 11/12/2007 7 6.00 28.27 97,900 3,460 Cone/Split 1 2 12/03/2007 28 6.00 28.27 129,480 4,580 Cone/Split 1 3 12/03/2007 28 6.00 28.27 124,120 4,390 Cone/Split Average 4,480 1 4 12/31/2007 56 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. (TM/ED) Page 1 of 3 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.: 304300 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: Redi-Mix Plant: P136 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA 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.: 340K1501 Placement Date: 11/05/2007 Weather Conditions: Clear Time Sampled: 06:04am Temperature - Air: 630F Truck No: 1188 Air Content: NA Overall Placement Location: Tilt wall panels 77-87 Batch time: 05:35am Concrete: 790F Ticket No: 13601021 Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: Northwest comer of tilt wall panel 82 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 11/08/2007 3 6.00 28.27 78,870 2,790 Shear 2 2 11/12/2007 7 6.00 28.27 102,290 3,620 Shear 2 3 12/03/2007 28 6.00 28.27 124,100 4,390 Cone/Shear 2 4 12/03/2007 28 6.00 28.27 131,580 4,650 Shear Average 4,520 2 5 12/31/2007 56 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. (TM/ED) Page 2 of 3 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, 8te 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304300 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: Redi-Mix Plant: P136 Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 3" - 5" Air (%): NA 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.: 340K1501 Placement Date: 11/05/2007 Weather Conditions: Clear Time Sampled: 06:59am Temperature - Air: 630F Truck No: 1188 Air Content: NA Overall Placement Location: Tilt wall panels 77-87 Batch time: 06:29am Concrete: 820F Ticket No: 13601032 Unit Weight (pet): NA Measured Slump (inches) 5.5 Sample Location: Northwest corner of tilt wall panel 85 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 3 1 11/08/2007 3 6.00 28.27 81,970 2,900 Shear 3 2 11/12/2007 7 6.00 28.27 105,590 3,730 Cone/Split 3 3 12/03/2007 28 6.00 28.27 133,510 4,720 Shear 3 4 12/03/2007 28 6.00 28.27 127,900 4,520 Shear Average 4,620 3 5 12/31/2007 56 Finished: 08:45am R E ~2~ Technician: Clayton Snyder Started: 04: 15am 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 Attn: Mr. Larry Davis 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. (TMIED) Page 3 of 3 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 304066 Project No.: 0712932 Date of Service: 11/02/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): NA 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.: 9349 PW Placement Date: 11/02/2007 Weather Conditions: Sunny, clear Time Sampled: 11 :35am Batch time: 11 :22am Temperature - Air: 700F Concrete: 900F Truck No: 144 Ticket No: 8741 Air Content: 4.0% Unit Weight (pet): NA Overall Placement Location: Panels at Point West VII _ 2nd mix 340 yards - panels 64,65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76 Measured Slump (inches) 5.75 Sample Location: P-64 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 11/09/2007 7 6.00 28.27 104,710 3,700 Cone/Split 1 2 11/30/2007 28 6.00 28.27 141 ,740 5,010 Shear 1 3 11/30/2007 28 6.00 28.27 135,420 4,790 Cone/Split Average 4,900 1 4 12/28/2007 56 Remarks: Water added at site: 5 gallons 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. (CHIED) Page 1 of 4 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 304066 Project No.: 0712932 Date of Service: 11/02/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): NA 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.: 9349 PW Placement Date: 11/02/2007 Weather Conditions: Sunny, clear Time Samplerl: 12:45pm Batch time: 12:31am Temperature - Air: 700F Concrete: 900F Truck No: 106 Ticket No: 8749 Air Content: 4.3% Unit Weight (pcf): NA Overall Placement Location: Panels at Point West VII - 2nd mix 340 yards - panels 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76 Measured Slump (inches) 5.5 Sample Location: P-67 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 11/09/2007 7 6.00 28.27 106,050 3,750 Cone/Split 2 2 11/30/2007 28 6.00 28.27 143,710 5,080 Cone/Split . 2 3 11/30/2007 28 6.00 28.27 148,260 5,240 Cone/Split Average 5,160 2 4 12/28/2007 56 Remarks: Water added at site: 10 gallons 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. (CH/ED) Page 2 of 4 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 304066 Project No.: 0712932 Date of Service: 11/02/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): NA 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.: 9349 PW Placement Date: 11/02/2007 Weather Conditions: Sunny, clear Time Sampled: 02:00pm Batch time: 01 :42pm Temperature - Air: 720F Concrete: 900F Truck No: 120 Ticket No: 8759 Air Content: 4.6% Unit Weight (pet): NA Overall Placement Location: Panels at Point West VII _ 2nd mix 340 yards - panels 64,65,66,67,68,69,70, 71, 72, 73, 74, 75, 76 Measured Slump (inches) 5.75 Sample Location: P-71 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 11/09/2007 7 6.00 28.27 118,510 4,190 Cone/Split 3 2 11/30/2007 28 6.00 28.27 152,490 5,390 Shear 3 3 11/30/2007 28 6.00 28.27 150,860 5,340 Shear Average 5,360 3 4 12/28/2007 56 Remarks: Water added at site: 5 gallons 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. (CHIED) Page 3 of 4 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 304066 Project No.: 0712932 Date of Service: 11/02/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): NA 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.: 9349 PW Placement Date: 11/02/2007 Weather Conditions: Sunny, clear Time Sampled: 03:00pm Batch time: 02:46pm Temperature - Air: 750F Concrete: 910F Truck No: 106 Ticket No: 8768 Air Content: 4.4% Unit Weight (pet): NA Overall Placement Location: Panels at Point West VII - 2nd mix 340 yards - panels 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76 Measured Slump (inches) 5.75 Sample Location: P-76 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 4 1 11/09/2007 7 6.00 28.27 114,690 4,060 Cone/Split 4 2 11/30/2007 28 6.00 28.27 159,690 5,650 Shear 4 3 11/30/2007 28 6.00 28.27 160,780 5,690 Cone/Split Average 5,670 4 4 12/28/2007 56 Remarks: Water added at site: 10 gallons Technician: Montreal Bailey 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 Attn: Mr. Larry Davis Finished: ~w~;;;;;, ~ 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. (CH/ED) Page 4 of 4 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 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.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Cloudy Time Sampled: 03:14am Temperature - Air: 600F Truck No: 142 Air Content: 4.5% Overall Placement Location: Northwest side corner of building Batch time: 02:40am Concrete: 800F Ticket No: 14739 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: 15' west, 5' north from northwest corner of paving 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 10/19/2007 7 6.00 28.27 137,650 4,870 Shear 1 2 11/09/2007 28 6.00 28.27 173,370 6,130 Cone/Split 1 3 11/09/2007 28 6.00 28.27 171,980 6,080 Cone/Split Average 6,110 1 4 12/07/2007 56 6.00 28.27 182,730 6,460 Cone/Split 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. (CH/ED) 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 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.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Cloudy Time Sampled: 04:51am Temperature - Air: 600F Truck No: 125 Air Content: 4.5% Overall Placement Location: Northwest side corner of building Batch time: 04:24am Concrete: 830F Ticket No: 14749 Unit Weight (pet): NA Measured Slump (inches) 5.5 Sample Location: 25' north, 20' west from northwest corner of paving 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 10/19/2007 7 6.00 28.27 129,870 4,590 Cone/Split 2 2 11/09/2007 28 6.00 28.27 164,830 5,830 Cone/Split 2 3 11/09/2007 28 6.00 28.27 161,720 5,720 Cone/Split Average 5,770 2 4 12/07/2007 56 6.00 28.27 184,290 6,520 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. (CH/ED) Page 2 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 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.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Cloudy Time Sampled: 06:20am Temperature - Air: 850F Truck No: 117 Air Content: 5.5% Overall Placement Location: Northwest side corner of building Batch time: 05:56am Concrete: 620F Ticket No: 14762 Unit Weight (pet): NA Measured Slump (inches) 4.5 Sample Location: 30' north, 20' east from northeast corner of paving 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 10/19/2007 7 6.00 28.27 124,720 4,410 Shear 3 2 11/09/2007 28 6.00 28.27 152,310 5,390 Shear 3 3 11/09/2007 28 6.00 28.27 141 , 150 4,990 Cone/Split Average 5,190 3 4 12/07/2007 56 6.00 28.27 163,010 5,770 Cone/Split 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. (CH/ED) Page 3 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 Specification Req uirements 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.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Sunny Time Sampled: 07:38am Temperature. Air: 610F Truck No: 148 Air Content: 4.5% Overall Placement Location: Northwest side corner of building Batch time: 07:00am Concrete: 850F Ticket No: 14769 Unit Weight (pct): NA Measured Slump (inches) 5.0 Sample Location: 40' north, 25' east from northeast corner of paving 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 10/19/2007 7 6.00 28.27 95,490 3,380 Cone/Split 4 2 11/09/2007 28 6.00 28.27 127,220 4,500 Cone/Split 4 3 11/09/2007 28 6.00 28.27 125,390 4,430 Cone/Split Average 4,470 4 4 12/07/2007 56 6.00 28.27 143,270 5,070 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. (CHIED) 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 LitUe 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.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 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.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Sunny Time Sampled: 09:03am Temperature - Air: 650F Truck No: 110 Air Content: 3.5% Overall Placement Location: Northwest side corner of building Batch time: 08: 19am Concrete: 850F Ticket No: 14781 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: 45' north, 36' west from northwest corner of paving 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 10/19/2007 7 6.00 28.27 104,410 3,690 Cone/Split 5 2 11/09/2007 28 6.00 28.27 134,240 4,750 Shear 5 3 11/09/2007 28 6.00 28.27 129,660 4,590 Cone/Split Average 4,670 5 4 12/07/2007 56 6.00 28.27 140,770 4,980 Cone/Split 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. (CH/ED) 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 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.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 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.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Sunny Time Sampled: 10:30am Temperature - Air: 700F Truck No: 104 Air Content: 4.5% Overall Placement Location: Northwest side corner of building Batch time: 09:05am Concrete: 900F Ticket No: 14790 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: 50' north, 15' west from northwest corner of paving 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 10/19/2007 7 6.00 28.27 88,290 3,120 Shear 6 2 11/09/2007 28 6.00 28.27 123,980 4,380 Cone/Split 6 3 11/09/2007 28 6.00 28.27 127,670 4,520 Shear Average 4,450 6 4 12/07/2007 56 6.00 28.27 139,310 4,930 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. (CH/ED) Page 6 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 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.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Sunny Time Sampled: 11 :26am Temperature. Air: 700F Truck No: 110 Air Content: 4.5% Overall Placement Location: Northwest side corner of building Batch time: 10:39am Concrete: 900F Ticket No: 7948 Unit Weight (pcf): NA Measured Slump (inches) 4.5 Sample Location: 60' north, 10' east from northeast corner of paving 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 7 1 10/19/2007 7 6.00 28.27 94,980 3,360 Shear 7 2 11/09/2007 28 6.00 28.27 120,770 4,270 Shear 7 3 11/09/2007 28 6.00 28.27 132,120 4,670 Shear Average 4,470 7 4 12/07/2007 56 6.00 28.27 142,550 5,040 Cone/Split 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. (CH/ED) 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 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.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Sunny Time Sampled: 12:15pm Temperature - Air: 760F Truck No: 110 Air Content: 3.5% Overall Placement Location: Northwest side corner of building Batch time: 11: 19am Concrete: 900F Ticket No: 14804 Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: 70' north, 20' west from northwest corner of paving 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 10/19/2007 7 6.00 28.27 107,740 3,810 Shear 8 2 11/09/2007 28 6.00 28.27 145,280 5,140 Cone/Split 8 3 11/09/2007 28 6.00 28.27 142,710 5,050 Cone/Split Average 5,090 8 4 12/07/2007 56 6.00 28.27 151,890 5,370 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. (CH/ED) Page 8 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 Specification Req uirements 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.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Sunny Time Sampled: 01 :55pm Temperature - Air: 900F Truck No: 142 Air Content: 5.5% Overall Placement Location: Northwest side corner of building Batch time: 01:14pm Concrete: 750F Ticket No: 14818 Unit Weight (pcf): NA Measured Slump (inches) 4.5 Sample Location: 25' south, 15' west from southwest corner of paving 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 9 1 10/19/2007 7 6.00 28.27 104,340 3,690 Cone/Split 9 2 11/09/2007 28 6.00 28.27 132,590 4,690 Cone/Split 9 3 11/09/2007 28 6.00 28.27 136,910 4,840 Cone/Shear Average 4,770 9 4 12/07/2007 56 6.00 28.27 139,430 4,930 Cone/Split 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. (CH/ED) Page 9 of 10 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7101 W Little York, Ste 600, Houston, TX 71040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301953 Project No.: 0712932 Date of Service: 10/12/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: 01 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 J.D.: 7753 PW Placement Date: 10/12/2007 Weather Conditions: Sunny Time Sampled: 02:50am Temperature - Air: 780F Truck No: 117 Air Content: 3.5% Overal1 Placement Location: Northwest side corner of building Batch time: 01 :58pm Concrete: 900F Ticket No: 14828 Unit Weight (pet): NA Measured Slump (inches) 4.5 Sample Location: 25' south, 20' east from southeast corner of paving 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 10 1 10/19/2007 7 6.00 28.27 100,750 3,560 Cone/Split 10 2 11/09/2007 28 6.00 28.27 143,270 5,070 Cone/Split 10 3 11/09/2007 28 6.00 28.27 135,540 4,790 Cone/Split Average 4,930 10 4 12/07/2007 56 6.00 28.27 153,040 5,410 Cone/Split Technician: Jimmy Scott Started: 02:00am 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 Attn: Mr. Larry Davis flnlsh~' 03~~;;;l ~ 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 Engi01eering Services, Ltd. (CHfED) Page 10 of 10 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 302451 Project No.: 0712932 Date of Service: 10/19/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: On Site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4.0" - 6.0" Air (%): NA 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 J.D.: 9349PW Placement Date: 10/19/2007 Weather Conditions: Clear Time Sampled: 04:17am Temperature - Air: 560F Truck No: 140 Air Content: 1.2% Overall Placement Location: Tilt wall panels: P89-P97, P99-P106, P115-P119, P121-P123 Batch time: Concrete: 690F Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 6.5 Sample Location: P90, Middle 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) (in') (Ibs) (psi) Type 1 1 10/26/2007 7 6.00 28.27 115,620 4,090 Shear 1 2 11/02/2007 14 6.00 28.27 128,050 4,530 Shear 1 3 11/16/2007 28 6.00 28.27 153,890 5,440 Cone/Split 1 4 11/16/2007 28 6.00 28.27 159,830 5,650 Cone/Shear Average 5,550 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. (LB/ED) Page 1 of 6 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 302451 Project No.: 0712932 Date of Service: 10/19/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perfonm required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. PROJECT DATA Measured Slump (inches) 5.0 Contractor: Duke Construction, LP Concrete Supplier: Potter Concrete Plant: On Site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4.0" - 6.0" Air (%): NA 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.: 9349PW Placement Date: 10/19/2007 Weather Conditions: Clear Time Sampled: 05:37am Temperature - Air: 510F Truck No: 138 Air Content: 1.1 % Overall Placement Location: Tilt wall panelS: P89-P97, P99-P106, P115-P119, P121-P123 Batch time: Concrete: 750F Ticket No: NA Unit Weight (pet): NA Sample Location: P96, Top 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) (in') (Ibs) (psi) Type 2 1 10/26/2007 7 6.00 28.27 123,260 4,360 Shear 2 2 11/02/2007 14 6.00 28.27 139,450 4,930 Cone/Split 2 3 11/16/2007 28 6.00 28.27 163,820 5,790 Cone/Split 2 4 11/16/2007 28 6.00 28.27 141 , 160 4,990 Shear Average 5,390 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. (LB/ED) Page 2 of 6 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 302451 Project No.: 0712932 Date of Service: 10/19/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: On Site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4.0" - 6.0" Air (%): NA 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.: 9349PW Placement Date: 10/19/2007 Weather Conditions: Clear / Windy Time Sampled: 07:45am Batch time: Temperature - Air: 520F Concrete: 740F Truck No: 109 Ticket No: NA Air Content: 1.3% Unit Weight (pcf): NA Overall Placement Location: Tilt wall panels: P89-P97, P99-P106, P115-P119, P121-P123 Measured Slump (inches) 4.75 Sample Location: P104, Bottom 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) (in2) (Ibs) (psi) Type 3 1 10/26/2007 7 6.00 28.27 102,460 3,620 Cone/Split 3 2 11/02/2007 14 6.00 28.27 113,960 4,030 Cone/Split 3 3 11/16/2007 28 6.00 28.27 136,930 4,840 Cone/Split 3 4 11/16/2007 28 6.00 28.27 137,290 4,860 Cone/Split Average 4,850 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. (LB/ED) Page 3 of 6 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 302451 Project No.: 0712932 Date of Service: 10/19/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: On Site Specification Req uirements Strength: 4,000 psi @28 days Slump (in.): 4.0" - 6.0" Air (%): NA 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.: 9349PW Placement Date: 10/19/2007 Weather Conditions: Clear / Windy Time Sampled: 09:25am Batch time: Temperature - Air: 630F Concrete: 750F Truck No: 132 Ticket No: NA Air Content: 1.2% Unit Weight (pct): NA Overall Placement Location: Tilt wall panels: P89-P97, P99-P106, P115-P119, P121-P123 Measured Slump (inches) 4.5 Sample Location: P116, Middle 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) (in') (Ibs) (psi) Type 4 1 10/26/2007 7 6.00 28.27 114,020 4,030 Cone/Split 4 2 11/02/2007 14 6.00 28.27 129,730 4,590 Cone/Split 4 3 11/16/2007 28 6.00 28.27 156,790 5,550 Cone/Split 4 4 11/16/2007 28 6.00 28.27 150,310 5,320 Cone/Split Average 5,430 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 exdusive 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, LId. (LB/ED) Page 4 of 6 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 302451 Project No.: 0712932 Date of Service: 10/19/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: On Site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4.0" - 6.0" Air (%): NA 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.: 9349PW Placement Date: 10/19/2007 Weather Conditions: Clear Time Sampled: 11 :03am Temperature - Air: 730F Truck No: 107 Air Content: 1.1 % Overall Placement Location: Tilt wall panels: P89-P97, P99-P106, P115-P119, P121-P123 Batch time: Concrete: 750F Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: P121, Top 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) (in') (Ibs) (psi) Type 5 1 10/26/2007 7 6.00 28.27 110,710 3,920 Shear 5 2 11/02/2007 14 6.00 28.27 127,530 4,510 Cone/Split 5 3 11/16/2007 28 6.00 28.27 151,290 5,350 Cone/Split 5 4 11/16/2007 28 6.00 28.27 145,160 5,130 Cone/Split Average 5,240 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. (LB/ED) Page 5 of 6 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 302451 Project No.: 0712932 Date of Service: 10/19/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: On Site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4.0" - 6.0" Air (%): NA 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.: 9349PW Placement Date: 10/19/2007 Weather Conditions: Clear Time Sampled: 02:15am Temperature - Air: 750F Truck No: 140 Air Content: 1.2% Overall Placement Location: Tilt wall panels: P89-P97, P99-P106, P115-P119, P121-P123 Batch time: Concrete: 750F Ticket No: NA Unit Weight (pct): NA Measured Slump (inches) 4.75 Sample Location: P123, Top 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) (in') (Ibs) (psi) Type 6 1 10/26/2007 7 6.00 28.27 93,650 3,310 Shear 6 2 11/02/2007 14 6.00 28.27 111 ,950 3,960 Cone/Split 6 3 11/16/2007 28 6.00 28.27 135,040 4,780 Cone/Split 6 4 11/16/2007 28 6.00 28.27 130,940 4,630 Shear Average 4,700 Technician: Javier Martinez Started: 03:15am 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 Attn: Mr. Larry Davis Finished: 021~;;d .~ K. Scot! 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. (LB/ED) Page 6 of 6 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214)630-9745 Report of Concrete Compressive Strength Test Report No.: 302575 Project No.: 0712932 Date of Service: 10/20/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: On site Specification Req uirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): NA 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.: 9349 Placement Date: 10/20/2007 Weather Conditions: Clear, windy Time Sampled: 04:45am Batch time: Temperature - Air: 580F Concrete: 670F Truck No: 110 Ticket No: Air Content: 1.2% Unit Weight (pcf): NA Overall Placement Location: Tilt wall panels, P124-P128, P131-P146 Measured Slump (inches) 5.0 Sample Location: P128, top 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) (in') (Ibs) (psi) Type 1 1 10/27/2007 7 6.00 28.27 111,910 3,960 Cone/Split 1 2 11/03/2007 14 6.00 28.27 133,780 4,730 Shear 1 3 11/17/2007 28 6.00 28.27 154,710 5,470 Cone/Split 1 4 11/17/2007 28 6.00 28.27 145,820 5,160 Cone/Shear Average 5,310 LIMIT A nONS: 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. (TMIED) Page 1 of 4 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 302575 Project No.: 0712932 Date of Service: 10/20/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: On site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): NA 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.: 9349 Placement Date: 10/20/2007 Weather Conditions: Clear, windy Time Sampled: 07:15am Batch time: Temperature - Air: 570F Concrete: 700F Truck No: 131 Ticket No: Air Content: 1.3% Unit Weight (pcf): NA Overall Placement Location: Tilt wall panels, P124-P128, P131-P146 Measured Slump (inches) 6.0 Sample Location: P131, middle 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) (in2) (Ibs) (psi) Type 2 1 10/27/2007 7 6.00 28.27 99,830 3,530 Shear 2 2 11/03/2007 14 6.00 28.27 118,190 4,180 Shear 2 3 11/17/2007 28 6.00 28.27 146,850 5,190 Cone/Shear 2 4 11/17/2007 28 6.00 28.27 148,120 5,240 Cone/Split Average 5,220 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. (TM/ED) Page 2 of 4 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 302575 Project No.: 0712932 Date of Service: 10/20/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: On site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): NA 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.: 9349 Placement Date: 10/20/2007 Weather Conditions: Clear, windy Time Sampled: 09:15am Batch time: Temperature - Air: 680F Concrete: 700F Truck No: 110 Ticket No: Air Content: 1.3% Unit Weight (pct): NA Overall Placement Location: Tilt wall panels, P124-P128, P131-P146 Measured Slump (inches) 5.5 Sample Location: P145 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 10/27/2007 7 6.00 28.27 102,730 3,630 Shear 3 2 11/03/2007 14 6.00 28.27 119,150 4,210 Shear 3 3 11/17/2007 28 6.00 28.27 157,720 5,580 Cone/Split 3 4 11/17/2007 28 6.00 28.27 151,750 5,370 Cone/Split Average 5,470 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. (TMIED) Page 3 of 4 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 302575 Project No.: 0712932 Date of Service: 10/20/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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: On site Specification Requirements Strength: 4,000 psi @ 28 days Slump (in.): 4" - 6" Air (%): NA 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.: 9349 Placement Date: 10/20/2007 Weather Conditions: Clear, windy Time Sampled: 10:15am Batch time: Temperature - Air: 710F Concrete: 750F Truck No: 110 Ticket No: Air Content: 1.1 % Unit Weight (pct): NA Overall Placement Location: Tilt wall panels, P124-P128, P131-P146 Measured Slump (inches) 6.0 Sample Location: P143, top 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) (in') (Ibs) (psi) Type 4 1 10/27/2007 7 6.00 28.27 104,250 3,690 Cone/Split 4 2 11/03/2007 14 6.00 28.27 123,640 4,370 Shear 4 3 11/17/2007 28 6.00 28.27 145,222 5,140 Cone/Shear 4 4 11/17/2007 28 6.00 28.27 152,850 5,410 Cone/Shear Average 5,270 Technician: Javier Martinez Started: 04:00am 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 Attn: Mr. Larry Davis Finished: 11 : 15am R E . ~;a~ 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. (TM!ED) Page 4 of 4 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304290 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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: 02:57am Concrete: 820F Ticket No: 8772 Unit Weight (pet): NA Measured Slump (inches) 4.0 Mix Design I.D.: 7753 PW Placement Date: 11/05/2007 Weather Conditions: Clear Time Sampled: 03:10am Temperature - Air: 550F Truck No: 140 Air Content: 4.1 % Overall Placement Location: Paving at Point West VII - northeast corner of trailer parking and east fire lane/approach Sample Location: 50' north, 15' west from northeast corner of building 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 11/12/2007 7 6.00 28.27 128,750 4,550 Cone/Split 1 2 12/03/2007 28 6.00 28.27 169,460 5,990 Cone/Split 1 3 12/03/2007 28 6.00 28.27 163,120 5,770 Shear Average 5,880 1 4 12/31/2007 56 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 1 of 9 Rone Engineering . 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 304290 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/05/2007 Weather Conditions: Clear Time Sampled: 04: 15am Temperature - Air: 550F Truck No: 109 Air Content: 1.3% Overall Placement Location: Paving at Point West VII - northeast corner of trailer parking and east fire lane/approach Batch time: 04:00am Concrete: 820F Ticket No: 8779 Unit Weight (pcf): NA Measured Slump (inches) 4.25 Sample Location: 75' north, 10' east from northeast corner of building 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 11/12/2007 7 6.00 28.27 115,670 4,090 Cone/Split 2 2 12/03/2007 28 6.00 28.27 149,660 5,290 Cone/Shear 2 3 12/03/2007 28 6.00 28.27 156,090 5,520 Cone/Split Average 5,410 2 4 12/31/2007 56 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 9 Rone Engineering . 8908 Ambassatlor Row, Dallas, TX 75247 7701 W Little York, 8te 600, Houston, TX 77040 4421 Freitlrich, 8te 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.: 304290 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/05/2007 Weather Conditions: Clear Time Sampled: 05:40am Temperature - Air: 580F Truck No: 101 Air Content: 4.8% Overall Placement Location: Paving at Point West VII - northeast corner of trailer parking and east fire lane/approach Batch time: 05:14am Concrete: 820F Ticket No: 8792 Unit Weight (pcf): NA Measured Slump (inches) 5.5 Sample Location: 40' north, 25' east from northeast corner of building 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 11/12/2007 7 6.00 28.27 86,650 3,060 Cone/Split 3 2 12/03/2007 28 6.00 28.27 110,840 3,920 Cone/Split 3 3 12/03/2007 28 6.00 28.27 110,360 3,900 Cone/Split Average 3,910 * 3 4 12/31/2007 56 * Does not comply with specified strength Remarks: Water added at site: 5 gallons 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 exdusive use of the dients 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 3 of 9 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.: 304290 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/05/2007 Weather Conditions: Sunny, clear Time Sampled: 06:50am Batch time: 06:34am Temperature - Air: 600F Concrete: 850F Truck No: 130 Ticket No: 8803 Air Content: 4.5% Unit Weight (pet): NA Overall Placement Location: Paving at Point West VII - northeast corner of trailer parking and east fire lane/approach Measured Slump (inches) 5.75 Sample Location: 15' north, 50' east from northeast corner of building 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 11/12/2007 7 6.00 28.27 83,520 2,950 Cone/Shear 4 2 12/03/2007 28 6.00 28.27 107,880 3,820 Shear 4 3 12/03/2007 28 6.00 28.27 110,380 3,900 Cone/Split Average 3,860 * 4 4 12/31/2007 56 * Does not comply with specified strength Remarks: Water added at site: 10 gallons 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 4 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304290 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/05/2007 Weather Conditions: Sunny, clear Time Sampled: 07:45am Batch time: 07:25am Temperature - Air: 600F Concrete: 850F Truck No: 101 Ticket No: 8810 Air Content: 4.6% Unit Weight (pet): NA Overall Placement Location: Paving at Point West VII - northeast corner of trailer parking and east fire lane/approach Measured Slump (inches) 5.0 Sample Location: 40' east from northeast corner of building 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 11/12/2007 7 6.00 28.27 120,990 4,280 Cone/Split 5 2 12/03/2007 28 6.00 28.27 134,620 4,760 Shear 5 3 12/03/2007 28 6.00 28.27 135,730 4,800 Shear Average 4,780 5 4 12/31/2007 56 Remarks: Water added at site: 10 gallons 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 5 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304290 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/05/2007 Weather Conditions: Sunny, clear Time Sampled: 10:30am Batch time: 10:08am Temperature. Air: 700F Concrete: 900F Truck No: 138 Ticket No: 8823 Air Content: 4.6% Unit Weight (pet): NA Overall Placement Location: Paving at Point West VII - northeast corner of trailer parking and east fire lane/approach Measured Slump (inches) 4.75 Sample Location: 50' east, 25' south from northeast corner of building 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 11/12/2007 7 6.00 28.27 79,360 2,810 Cone/Split 6 2 12/03/2007 28 6.00 28.27 110,030 3,890 Cone/Split 6 3 12/03/2007 28 6.00 28.27 117,980 4,170 Cone/Shear Average 4,030 6 4 12/31/2007 56 Remarks: Water added at site: 5 gallons 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 6 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304290 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/05/2007 Weather Conditions: Sunny, clear Time Sampled: 11 :55am Batch time: 11 :35am Temperature - Air: 750F Concrete: 900F Truck No: 140 Ticket No: 8838 Air Content: 1.5% Unit Weight (pet): NA Overall Placement Location: Paving at Point West VII - northeast corner of trailer parking and east fire lanefapproach Measured Slump (inches) 4.0 Sample Location: 30' east, 90' south from northeast corner of building 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 11/12/2007 7 6.00 28.27 109,080 3,860 Cone/Split 7 2 12/03/2007 28 6.00 28.27 133,600 4,730 Shear 7 3 12/03/2007 28 6.00 28.27 130,610 4,620 Cone/Split Average 4,670 7 4 12/31/2007 56 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 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304290 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/05/2007 Weather Conditions: Sunny, clear Time Sampled: 01:45pm Batch time: 01:16pm Temperature - Air: 800F Concrete: 920F Truck No: 126 Ticket No: 15677 Air Content: 4.9% Unit Weight (pet): NA Overall Placement Location: Paving at Point West VII - northeast corner of trailer parking and east fire lane/approach Measured Slump (inches) 4.5 Sample Location: 45' east, 140' south from northeast corner of building 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 11/12/2007 7 6.00 28.27 106,910 3,780 Cone/Split 8 2 12/03/2007 28 6.00 28.27 132,390 4,680 Cone/Shear 8 3 12/03/2007 28 6.00 28.27 115,420 4,080 Shear Average 4,380 8 4 12/31/2007 56 LIMITATION S: 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 fuli without the written approval of Rone Engineering Services, Ltd. (KW/KW) Page 8 of 9 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 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304290 Project No.: 0712932 Date of Service: 11/05/2007 Report Date: 12/11/2007 Project: Hemisphere's at Point West Coppell, Texas 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.): 4" - 6" Air (%): 3% - 5% 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.: 7753 PW Placement Date: 11/05/2007 Weather Conditions: Sunny, clear Time Sampled: 03:00pm Batch time: 02:32pm Temperature - Air: 820F Concrete: 920F Truck No: 130 Ticket No: 8852 Air Content: 4.5% Unit Weight (pet): NA Overall Placement Location: Paving at Point West VII - northeast corner of trailer parking aAd east fire lane/approach Measured Slump (inches) 6.5 Sample Location: 50' east, 200' south from northeast corner of building 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 11/12/2007 7 6.00 28.27 78,900 2,790 Cone/Split 9 2 12/03/2007 28 6.00 28.27 124,380 4,400 Shear 9 3 12/03/2007 28 6.00 28.27 121,940 4,310 Cone/Split Average 4,360 9 4 12/31/2007 56 Started: 02:00am Finished: 04:00pm Technician: Montreal Bailey 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 Attn: Mr. Larry Davis Rone Engineering p~~ 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. (KW/KW) Page 9 of 9