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Gateway BP(3.1)-LR071003 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: Report of Concrete Compressive Strength Test Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 Report No.: 299709 Project No.: 0712786 Date of Service: 09/24/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi Mix Plant: 136 Specification Requirements Strength: 3,000 psi @ 28 days Slump (in.): 3" - 5" 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) 7.5 Mix Design 1.0.: 1501 Placement Date: 09/24/2007 Weather Conditions: Clear, Calm Time Sampled: 08:00am Batch time: 07:28am Temperature - Air: 700F Concrete: 870F Truck No: 1190 Ticket No: 13697794 Air Content: 1.7% Unit Weight (pet): NA Overall Placement Location: Building 2, 2nd floor slab on deck, grid line D.9 to grid line A.1 , grid line 1.1 to grid line 6 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 09/27/2007 3 6.00 28.27 56,260 1,990 Shear 2 10/01/2007 7 6.00 28.27 69,100 2,440 Cone/Split 3 10/22/2007 28 4 10/22/2007 28 5 11/19/2007 56 Remarks: Water added at site: 15 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. (LBILB) Page 1 of 3 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 299709 Project No.: 0712786 Date of Service: 09/24/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi Mix Plant: 136 Specification Requirements Strength: 3,000 psi @ 28 days Slump (in.): 3" - 5" 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.: 1501 Placement Date: 09/24/2007 Weather Conditions: Clear, Calm Time Sampled: 10:30am Batch time: 10:00am Temperature - Air: 790F Concrete: 900F Truck No: 1032 Ticket No: 13697820 Air Content: 1.0% Unit Weight (pcf): NA Overall Placement Location: Building 2, 2nd floor slab on deck, grid line 0.9 to grid line A.1 , grid line 1.1 to grid line 6 Measured Slump (inches) 5.5 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 2 1 09/27/2007 3 6.00 28.27 74,130 2,620 Shear 2 2 10/01/2007 7 6.00 28.27 91,830 3,250 Shear 2 3 10/22/2007 28 2 4 10/22/2007 28 2 5 11/19/2007 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. (LB/LB) Page 2 of 3 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 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.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 02:30am Batch time: 01 :24am Temperature - Air: 820F Concrete: 860F Truck No: 1378 Ticket No: 13853996 Air Content: 1.3% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 4.5 Sample Location: 60' west, 20' south from northwest building corner REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 1 1 08/14/2007 7 6.00 28.27 71,180 2,520 Unbonded Cap 1 2 09/04/2007 28 6.00 28.27 92,120 3,260 Cone/Split 1 3 09/04/2007 28 6.00 28.27 85,250 3,020 Cone/Split Average 3,140 * 4 10/02/2007 56 6.00 28.27 98,060 3,470 Cone/Shear * Does not comply with specified strength Remarks: Dowels were placed prior to concrete placement; discrepancies noted on report #294654 were corrected prior to concrete placement. 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. (KWfLB) Page 1 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 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.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 03:30am Batch time: 02:23am Temperature - Air: 810F Concrete: 850F Truck No: 1281 Ticket No: 13554004 Air Content: 3.4% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 5.0 Sample Location: 105' west, 15' south from northwest building corner REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 2 1 08/14/2007 7 6.00 28.27 75,000 2,650 Unbonded Cap 2 2 09/04/2007 28 6.00 28.27 95,700 3,380 Cone/Split 2 3 09/04/2007 28 6.00 28.27 98,430 3,480 Cone/Split Average 3,430 * 2 4 10/02/2007 56 6.00 28.27 103,220 3,650 Shear * Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition. appearance. etc.) or any other feature of similar SUbject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (KW/LB) Page 2 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 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.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 04:45am Batch time: 04:11am Temperature - Air: 830F Concrete: 850F Truck No: 1351 Ticket No: 13554015 Air Content: 3.3% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 5.0 Sample Location: 150' west, 25' south from northwest building corner REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 3 1 08/14/2007 7 6.00 28.27 77,680 2,750 Unbonded Cap 3 2 09/04/2007 28 6.00 28.27 94,760 3,350 Cone/Split 3 3 09/04/2007 28 6.00 28.27 99,640 3,520 Cone/Split Average 3,440 * 3 4 10/02/2007 56 6.00 28.27 105,370 3,730 Cone/Shear * 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/LB) Page 3 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 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.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 07:25am Batch time: 05:32am Temperature - Air: 830F Concrete: 870F Truck No: 1278 Ticket No: 13554024 Air Content: 3.2% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 4.5 Sample Location: 240' west, 25' south from northwest building corner REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 4 1 08/14/2007 7 6.00 28.27 64,250 2,270 Unbonded Cap 4 2 09/04/2007 28 6.00 28.27 89,740 3,170 Cone/Split 4 3 09/04/2007 28 6.00 28.27 84,41 0 2,990 Cone/Split Average 3,080 * 4 4 10/02/2007 56 6.00 28.27 91,800 3,250 Cone/Split * Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for 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. (KWfLB) Page 4 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 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.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 09:40am Batch time: 08:47am Temperature - Air: 850F Concrete: 900F Truck No: 1393 Ticket No: 13554043 Air Content: 3.2% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 6.0 Sample Location: 220' west, 50' south from northwest building corner REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 5 1 08/14/2007 7 6.00 28.27 65,050 2,300 Unbonded Cap 5 2 09/04/2007 28 6.00 28.27 84,600 2,990 Shear 5 3 09/04/2007 28 6.00 28.27 81,620 2,890 Cone/Split Average 2,940 * 5 4 10/02/2007 56 6.00 28.27 87,770 3,100 Cone/Split * Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for 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/LB) Page 5 of 8 Rone Engineering .. Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 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.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 12:20pm Batch time: 11 :11am Temperature - Air: 890F Concrete: 920F Truck No: 1248 Ticket No: 13554069 Air Content: 3.3% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 6.0 Sample Location: 170' west, 100' south from northwest building corner REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 6 1 08/14/2007 7 6.00 28.27 47,980 1,700 Unbonded Cap 6 2 09/04/2007 28 6.00 28.27 64,160 2,270 Cone/Split 6 3 09/04/2007 28 6.00 28.27 69,530 2,460 Cone/Split Average 2,360 * 6 4 10/02/2007 56 6.00 28.27 68,270 2,410 Cone/Split * Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for 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/LB) Page 6 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 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 I.D.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 02:25pm Batch time: 01:17pm Temperature - Air: 910F Concrete: 930F Truck No: 1279 Ticket No: 13554092 Air Content: 3.3% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 6.0 Sample Location: 60' west, 35' south from northwest building corner REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 7 1 08/14/2007 7 6.00 28.27 77,290 2,730 Unbonded Cap 7 2 09/04/2007 28 6.00 28.27 99,600 3,520 Shear 7 3 09/04/2007 28 6.00 28.27 106,680 3,770 Cone/Split Average 3,650 7 4 10/02/2007 56 6.00 28.27 102,730 3,630 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. (KW/LB) Page 7 of 8 Rone Engineering . Client: Transwestern Commercial SeNices 5001 Spring Valley Dallas, TX 75244 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.: 297387 Project No.: 0712786 Date of Service: 08/30/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi-Mix Plant: 88 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" - 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.: 1524 Placement Date: 08/30/2007 Weather Conditions: Cloudy, calm Time Sampled: 04:03am Batch time: 03:29am Temperature - Air: 780F Concrete: 840F Truck No: 1303 Ticket No: 88053750 Air Content: 4.3% Unit Weight (pet): NA Overall Placement Location: Station 525.70-527.10 ridge, Station 525.20-527.40 ridge, page C2.01 Measured Slump (inches) 5.0 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 09/06/2007 7 6.00 28.27 100,820 3,570 Cone/Split 2 09/27/2007 28 6.00 28.27 123,300 4,360 Shear 3 09/27/2007 28 6.00 28.27 123,910 4,380 Cone/Split Average 4,370 4 10/25/2007 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. (LB/LB) Page 1 of 5 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 297387 Project No.: 0712786 Date of Service: 08/30/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi-Mix Plant: 88 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" - 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.: 1524 Placement Date: 08/30/2007 Weather Conditions: Cloudy, calm Time Sampled: 04:45am Batch time: 04:03am Temperature - Air: 760F Concrete: 880F Truck No: 1046 Ticket No: 88053753 Air Content: 4.7% Unit Weight (pet): NA Overall Placement location: Station 525.70-527.10 ridge, Station 525.20-527.40 ridge, page C2.01 Measured Slump (inches) 5.0 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) (in') (Ibs) (psi) Type 2 1 09/06/2007 7 6.00 28.27 95,080 3,360 Shear 2 2 09/27/2007 28 6.00 28.27 119,380 4,220 Shear 2 3 09/27/2007 28 6.00 28.27 127,090 4,490 Shear t lerage 4,360 2 4 10/25/2007 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. (LB/LB) Page 2 of 5 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 297387 Project No.: 0712786 Date of Service: 08/30/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi-Mix Plant: 88 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" - 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.: 1524 Placement Date: 08/30/2007 Weather Conditions: Cloudy, calm Time Sampled: 05:30am Batch time: 05:08am Temperature - Air: 710F Concrete: 830F Truck No: 1303 Ticket No: 88053759 Air Content: 4.2% Unit Weight (pcf): NA Overall Placement Location: Station 525.70-527.10 ridge, Station 525.20-527.40 ridge, page C2.01 Measured Slump (inches) 5.5 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 3 1 09/06/2007 7 6.00 28.27 102,240 3,620 Cone/Split 3 2 09/27/2007 28 6.00 28.27 133,580 4,720 Cone/Split 3 3 09/27/2007 28 6.00 28.27 132,430 4,680 Cone/Shear Average ',700 3 4 10/25/2007 56 Remarks: Water added at site: 15 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. (LB/LB) Page 3 of 5 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 297387 Project No.: 0712786 Date of Service: 08/30/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi-Mix Plant: 88 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" - 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.: 1524 Placement Date: 08/30/2007 Weather Conditions: Cloudy, calm Time Sampled: 06:35am Batch time: 06:00am Temperature - Air: 720F Concrete: 900F Truck No: 1348 Ticket No: 13695739 Air Content: 3.7% Unit Weight (pet): NA Overall Placement Location: Station 525.70-527.10 ridge, Station 525.20-527.40 ridge, page C2.01 Measured Slump (inches) 5.0 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 4 1 09/06/2007 7 6.00 28.27 85,190 3,010 Cone/Split 4 2 09/27/2007 28 6.00 28.27 105,280 3,720 Cone/Split 4 3 09/27/2007 28 6.00 28.27 105,380 3,730 Cone/Split Average ,),730 4 4 10/25/2007 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. (LB/LB) Page 4 of 5 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 Report of Concrete Compressive Strength Test Client: Report No.: 299092 Project No.: 0712786 Date of Service: 09/18/2007 Report Date: 10/03/2007 Transwestern Commercial Services 5001 Spring Valley Dallas, TX ~ Project: Gatewa usiness Center Copp , Texas Services: Obt samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring sa pies back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Constructors & Associates Concrete Supplier: LMC Plant: 3 Specification Req u i rements Strength: 3,600 psi @ 28 days Slump (in.): 2" - 4" 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.: 1551 Placement Date: 09/18/2007 Weather Conditions: Sunny Time Sampled: 02:15pm Temperature - Air: 870F Truck No: 1111 Air Content: 3.5% Overall Placement Location: Inlet top outer Station 7+00 Sample Location: Same as above REPORT OF TESTS Batch time: 01 :39pm Concrete: 880F Ticket No: 37018 Unit W. t( f): NA Measured Slump (inches) 3.0 ~;}~ Cylinder Marked Date Set No. Tested 1 1 09/25/2007 2 10/16/2007 3 10/16/2007 4 11/13/2007 56 Diameter (in) 6.00 Remarks: Water added at site: 10 gallons Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 99,460 Area (in2) 28.27 Ig/"tflJ~" Fracture Type 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/LB) Page 1 of 2 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 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.: 299208 Project No.: 0712786 Date of Service: 09/19/2007 Report Date: 10/03/2007 Project: Gateway Business Center 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: Constructors & Associates Concrete Supplier: Redi-Mix Plant: 136 Specification Requirements Strength: 3,000 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.: 830J1521 Placement Date: 09/19/2007 Weather Conditions: Cloudy, windy Time Sampled: 10:02am Batch time: 09:26am Temperature - Air: 800F Concrete: 870F Truck No: 1185 Ticket No: 13697316 Air Content: NA Unit Weight (pcf): NA Overall Placement Location: Pier caps, canopy, building 1 Measured Slump (inches) 4.5 Sample Location: Same as above REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 78,400 Cylinder Marked Date Set No. Tested 1 1 09/26/2007 2 10/17/2007 3 10/17/2007 1 4 11/14/2007 Age (days) 7 Diameter (in) 6.00 28 28 56 Compressive Strength (psi) 2,770 Fracture Type Cone/Split Area (in') 28.27 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. (TMlLB) Page 1 of 2