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Duke Lesley 2A-LR071101 Rone En~== 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.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/02/2007 Weather Conditions: Cloudy Time Sampled: 03:55pm Temperature - Air: 780F Truck No: 102 Air Content: NA Overall Placement Location: Slab, grid lines C-E and 11-21 Batch time: 03:42pm Concrete: 900F Ticket No: 14247 Unit Weight (pcf): NA Measured Slump (inches) 7.0 Sample Location: C,D,E/Line 11-12 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 10/09/2007 7 6.00 28.27 101,870 3,600 Shear 1 2 10/30/2007 28 6.00 28.27 131,220 4,640 Cone/Split 1 3 10/30/2007 28 6.00 28.27 139,480 4,930 Cone/Split Average 4,790 1 4 11/27/2007 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. (KW/KW) Page 1 of 10 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, 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.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/02/2007 Weather Conditions: Cloudy Time Sampled: 05:00am Temperature - Air: 780F Truck No: 130 Air Content: NA Overall Placement Location: Slab, gridlines C-E and 11-21 Batch time: 04:38am Concrete: 900F Ticket No: 14257 Unit Weight (pct): NA Measured Slump (inches) 6.0 Sample Location: C,O,E/Line 12-12.9 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 10/09/2007 7 6.00 28.27 101,360 3,580 Cone/Split 2 2 10/30/2007 28 6.00 28.27 125,140 4,430 Cone/Split 2 3 10/30/2007 28 6.00 28.27 142,820 5,050 Cone/Split Average 4,740 2 4 11/27/2007 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. (KW/KW) Page 2 of 10 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.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/02/2007 Weather Conditions: Cloudy Time Sampled: 05:45am Temperature - Air: 780F Truck No: 138 Air Content: NA Overall Placement Location: Slab, gridlines C-E and 11-21 Batch time: 05:34am Concrete: 880F Ticket No: 14267 Unit Weight (pcf): NA Measured Slump (inches) 6.0 Sample Location: C,O,E/Line 12.9-13.8 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 10/09/2007 7 6.00 28.27 119,690 4,230 Cone/Split 3 2 10/30/2007 28 6.00 28.27 156,520 5,540 Cone/Split 3 3 10/30/2007 28 6.00 28.27 151,400 5,350 Cone/Split Average 5,450 3 4 11/27/2007 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, elC.) 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 3 of 10 Rone En~== 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.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/02/2007 Weather Conditions: Cloudy Time Sampled: 07:00am Temperature - Air: 800F Truck No: 102 Air Content: NA Overall Placement Location: Slab, gridlines C-E and 11-21 Batch time: 06:40am Concrete: 920F Ticket No: 14277 Unit Weight (pct): NA Measured Slump (inches) 5.0 Sample Location: C,D,E/Line 13.8-14.8 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 10/09/2007 7 6.00 28.27 123,210 4,360 Cone/Split 4 2 10/30/2007 28 6.00 28.27 145,000 5,130 Cone/Shear 4 3 10/30/2007 28 6.00 28.27 142,520 5,040 Cone/Split Average 5,080 4 4 11/27/2007 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. (KW/KW) Page 4 of 10 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.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/0212007 Weather Conditions: Sunny Time Sampled: 08:00am Temperature - Air: 800F Truck No: 130 Air Content: NA Overall Placement Location: Slab, gridlines C-E and 11-21 Batch time: 07:36am Concrete: 880F Ticket No: 14287 Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: C,O,E/Line 14.8-15.9 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (inZ) (Ibs) (psi) Type 5 1 10/09/2007 7 6,00 28.27 114,750 4,060 Cone/Split 5 2 10/30/2007 28 6.00 28.27 146,320 5,170 Cone/Split 5 3 10/30/2007 28 6.00 28.27 147,950 5,230 Shear Average 5,200 5 4 11/27/2007 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. (KW/KW) Page 5 of 10 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W 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.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/02/2007 Weather Conditions: Sunny Time Sampled: 09:40am Temperature - Air: 800F Truck No: 138 Air Content: NA Overall Placement Location: Slab, gridlines C-E and 11-21 Batch time: 09:24am Concrete: 900F Ticket No: 14299 Unit Weight (pet): NA Measured Slump (inches) 6.0 Sample Location: C,D,E/Line 15.9-16.8 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 10/09/2007 7 6.00 28.27 114,540 4,050 Cone/Split 6 2 10/30/2007 28 6.00 28.27 140,530 4,970 Cone/Split 6 3 10/30/2007 28 6.00 28.27 144,710 5,120 Shear Average 5,040 6 4 11/27/2007 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. (KW/KW) 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.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/02/2007 Weather Conditions: Sunny Time Sampled: 10:30am Temperature - Air: 840F Truck No: 138 Air Content: NA Overall Placement Location: Slab, gridlines C-E and 11-21 Batch time: 1 0:22am Concrete: 880F Ticket No: 14309 Unit Weight (pet): NA Measured Slump (inches) 6.0 Sample Location: C,D,E/Line 16.8-18 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 10/09/2007 7 6.00 28.27 109,340 3,870 Cone/Split 7 2 10/30/2007 28 6.00 28.27 131,510 4,650 Shear 7 3 10/30/2007 28 6.00 28.27 134,790 4,770 Shear Average 4,710 7 4 11/27/2007 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. (KW/KW) Page 7 of 10 Rone Engineering .. Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/02/2007 Weather Conditions: Sunny Time Sampled: 11 :45am Temperature - Air: 860F Truck No: 102 Air Content: NA Overall Placement Location: Slab, gridlines C-E and 11-21 Batch time: 11 :28am Concrete: 900F Ticket No: 14321 Unit Weight (pct): NA Measured Slump (inches) 7.0 Sample Location: C,D,E/Line 18-19.2 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 8 1 10/09/2007 7 6.00 28.27 101,180 3,580 Cone/Split 8 2 10/30/2007 28 6.00 28.27 123,300 4,360 Cone/Split 8 3 10/30/2007 28 6.00 28.27 122,490 4,330 Cone/Split Average 4,350 8 4 11/27/2007 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. (KW/KW) 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.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/02/2007 Weather Conditions: Sunny Time Sampled: 12:45pm Temperature - Air: 880F Truck No: 134 Air Content: NA Overall Placement Location: Slab, gridlines C-E and 11-21 Batch time: 12:28pm Concrete: 900F Ticket No: 14331 Unit Weight (pet): NA Measured Slump (inches) 6.0 Sample Location: C,D,E/Line 19.2-20.4 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 10/09/2007 7 6.00 28.27 97,930 3,460 Cone/Split 9 2 10/30/2007 28 6.00 28.27 120,460 4,260 Shear 9 3 10/30/2007 28 6.00 28.27 123,390 4,360 Cone/Split Average 4,310 9 4 11/27/2007 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. (KW/KW) 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 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.: 300683 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/02/2007 Weather Conditions: Sunny Time Sampled: 01 :30pm Temperature - Air: 880F Truck No: 134 Air Content: NA Overall Placement Location: Slab, gridlines C-E and 11-21 Batch time: 01:19pm Concrete: 920F Ticket No: 14338 Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: C,D,E/Line 20.4-21 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 10/09/2007 7 6.00 28.27 109,370 3,870 Cone/Split 10 2 10/30/2007 28 6.00 28.27 125,130 4,430 Shear 10 3 10/30/2007 28 6.00 28.27 123,750 4,380 Cone/Split Average 4,400 10 4 11/27/2007 56 Started: 02:30am Finished: 02:15pm Technician: Denny Harris 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 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 10 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.: 300662 Project No.: 0712932 Date of Service: 10/02/2007 Report Date: 11/01/2007 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: 10/02/2007 Weather Conditions: Few clouds Time Sampled: 10:15am Batch time: 09:13am Temperature - Air: 800F Concrete: 820F Truck No: 109 Ticket No: 14297 Air Content: NA Unit Weight (pet): NA Overall Placement Location: Building piers U9.B, K.7/0.9, K.2/0.9, J.B/0.9, H.B, H.2, G.B/1 Measured Slump (inches) 6.75 Sample Location: Pier U5.B 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 10/09/2007 7 6.00 28.27 91,690 3,240 Cone/Split 1 2 10/09/2007 7 6.00 28.27 91,480 3,240 Cone/Split Average 3,240 1 3 10/30/2007 28 6.00 28.27 117,960 4,170 Cone/Split 1 4 10/30/2007 28 6.00 28.27 126,990 4,490 Cone/Split Average 4,330 1 5 11/27/2007 56 Technician: Chris Harbour Rone Engineering See Report 300661 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 Project Manager 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. (CH/KW) 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.: 300838 Project No.: 0712932 Date of Service: 10/03/2007 Report Date: 11/01/2007 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.): 3" - 5" 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 PROJECT DATA Mix Design I.D.: 9349 Placement Date: 10/03/2007 Weather Conditions: Cloudy Time Sampled: 03:55am Temperature - Air: 800F Truck No: 139 Air Content: NA Overall Placement Location: E,F,GfLine 21-30 Batch time: 03:36am Concrete: gooF Ticket No: 114356 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: E,F,FfLine 21-22 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 10/10/2007 7 6.00 28.27 117,840 4,170 Shear 1 2 10/31/2007 28 6.00 28.27 154,190 5,450 Cone/Split 1 3 10/31/2007 28 6.00 28.27 149,840 5,300 Cone/Split Average 5,380 4 11/28/2007 59 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 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, 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.: 300838 Project No.: 0712932 Date of Service: 10/03/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/03/2007 Weather Conditions: Cloudy, scattered shower Time Sampled: 04:45am Batch time: 04:31am Temperature - Air: 820F Concrete: 900F Truck No: 107 Ticket No: 14366 Air Content: NA Unit Weight (pet): NA Overall Placement Location: E,F,G/Line 21-30 Measured Slump (inches) 5.0 Sample Location: E,F,F/Line 22-23 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 10/10/2007 7 6.00 28.27 119,690 4,230 Cone/Shear 2 2 10/31/2007 28 6.00 28.27 160,130 5,660 Cone/Split 2 3 10/31/2007 28 6.00 28.27 158,780 5,620 Shear Average 5,640 2 4 11/28/2007 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 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, 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.: 300838 Project No.: 0712932 Date of Service: 10/03/2007 Report Date: 11/01/2007 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.): 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.: 9349 Placement Date: 10/03/2007 Weather Conditions: Cloudy/rain Time Sampled: 05: 15am Batch time: 05:03am Temperature - Air: 820F Concrete: 900F Truck No: 107 Ticket No: 14372 Air Content: NA Unit Weight (pet): NA Overall Placement Location: E,F,G/Line 21-30 Measured Slump (inches) 5.0 Sample Location: E,F,F/Line 23-32.9/24.0 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 10/10/2007 7 6.00 28.27 111 ,430 3,940 Shear 3 2 10/31/2007 28 6.00 28.27 151,690 5,360 Cone/Shear 3 3 10/31/2007 28 6.00 28.27 158,400 5,600 Cone/Split Average 5,480 3 4 11/28/2007 56 Finished: 08:45am Technician: Denny Harris 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 Rone Engineering ,~ ~ K. Scott Watson, AET Project Manager LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/ED) Page 3 of 3