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Gateway BP(3.1)-LR071129 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.: 300682 Project No.: 0712786 Date of Service: 10/02/2007 Report Date: 11/29/2007 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.): 4" - 6" Air ('Yo): 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: 10/02/2007 Weather Conditions: Clear, calm Time Sampled: 03:50am Batch time: 03:14am Temperature - Air: 720F Concrete: 830F Truck No: 1090 Ticket No: 88054777 Air Content: 3.8% Unit Weight (pct): NA Overall Placement Location: Paving grading plan north - 535.16' 43 E 104.04 Pg C2, 02 Measured Slump (inches) 5.0 Sample Location: 60' south of Building 1 grid line E/1.0 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 1 1 10/05/2007 3 6.00 28.27 67,850 2,400 Unbonded Cap 2 10/09/2007 7 6.00 28.27 85,760 3,030 Cone/Split 1 3 10/30/2007 28 6.00 28.27 106,870 3,780 Cone/Split 1 4 10/30/2007 28 6.00 28.27 99,430 3,520 Cone/Split Average 3,650 1 5 11/27/2007 56 6.00 26.27 122,680 4,340 Shear Remarks: ***Revised 11/27/2007 to reflect correct sample location.*** 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 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.: 300682 Project No.: 0712786 Date of Service: 10/02/2007 Report Date: 11/29/2007 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.): 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.: 1524 Placement Date: 10/02/2007 Weather Conditions: Clear, calm Time Sampled: 05:15am Batch time: 04:27am Temperature - Air: 710F Concrete: 820F Truck No: 1089 Ticket No: 88054787 Air Content: 3.6% Unit Weight (pet): NA Overall Placement Location: Paving grading plan north - 535.16' 43 E 104.04 Pg C2, 02 Measured Slump (inches) 6.0 Sample Location: 120' south of Building 1 gridline E/2.0 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 2 1 10/05/2007 3 6.00 28.27 65,990 2,330 Unbonded Cap 2 2 10/09/2007 7 6.00 28.27 83,660 2,960 Cone/Split 2 3 10/30/2007 28 6.00 28.27 103,900 3,670 Cone/Shear 2 4 10/30/2007 28 6.00 28.27 112,320 3,970 Cone/Split Average 3,820 2 5 11/27/2007 56 6.00 28.27 130,880 4,630 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/KW) 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.: 300682 Project No.: 0712786 Date of Service: 10/02/2007 Report Date: 11/29/2007 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.): 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.: 1524 Placement Date: 10/02/2007 Weather Conditions: Clear, calm Time Sampled: 06:00am Batch time: 05:32am Temperature - Air: 700F Concrete: 820F Truck No: 1058 Ticket No: 88054795 Air Content: 3.8% Unit Weight (pet): NA Overall Placement Location: Paving grading plan north - 535.16' 43 E 104.04 Pg C2, 02 Measured Slump (inches) 6.5 Sample Location: 90' south of Building 1 gridline E/7.0 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) (in2) (Ibs) (psi) Type 3 1 10/05/2007 3 6.00 28.27 60,890 2,150 Unbonded Cap 3 2 10/09/2007 7 6.00 28.27 80,090 2,830 Shear 3 3 10/30/2007 28 6.00 28.27 108,780 3,850 Cone/Shear 3 4 10/30/2007 28 6.00 28.27 103,070 3,650 Cone/Split Average 3,750 3 5 11/27/2007 56 6.00 28.27 126,950 4,490 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/KW) 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.: 300682 Project No.: 0712786 Date of Service: 10/02/2007 Report Date: 11/29/2007 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.): 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.: 1524 Placement Date: 10/02/2007 Weather Conditions: Cloudy, calm Time Sampled: 09:03am Batch time: 07:58am Temperature - Air: 730F Concrete: 880F Truck No: 1089 Ticket No: 88054810 Air Content: 3.6% Unit Weight (pet): NA Overall Placement Location: Paving grading plan north - 535.16' 43 E 104.04 Pg C2, 02 Measured Slump (inches) 6.0 Sample Location: 60' south of Building 1 gridline E/3.0 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 4 1 10/05/2007 3 6.00 28.27 63,310 2,240 Unbonded Cap 4 2 10/09/2007 7 6.00 28.27 77,180 2,730 Shear 4 3 10/30/2007 28 6.00 28.27 89,850 3,180 Cone/Split 4 4 10/30/2007 28 6.00 28.27 87,990 3,110 Cone/Split Average 3,140 * 4 5 11/27/2007 56 6.00 28.27 123,460 4,370 Cone/Split * Does not comply with specified strength 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. (KW/KW) Page 4 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.: 300682 Project No.: 0712786 Date of Service: 10/02/2007 Report Date: 11/29/2007 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.): 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 J.D.: 1524 Placement Date: 10/02/2007 Weather Conditions: Clear, calm Time Sampled: 06:00am Batch time: 05:32am Temperature - Air: 700F Concrete: 820F Truck No: 1058 Ticket No: 88054795 Air Content: 3.8% Unit Weight (pcf): NA Overall Placement Location: Paving grading plan north - 535.16' 43 E 104.04 Pg C2, 02 Measured Slump (inches) 6.5 Sample Location: 90' south of Building 1 grid line Ef7.0 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) (in2) (Ibs) (psi) Type 3 1 10/05/2007 3 6.00 28.27 60,890 2,150 Unbonded Cap 3 2 10/09/2007 7 6.00 28.27 80,090 2,830 Shear 3 3 10/30/2007 28 6.00 28.27 108,780 3,850 Cone/Shear 3 4 10/30/2007 28 6.00 28.27 103,070 3,650 Cone/Split Average 3,750 3 5 11/27/2007 56 6.00 28.27 126,950 4,490 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/KW) 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.: 300682 Project No.: 0712786 Date of Service: 10/02/2007 Report Date: 11/29/2007 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.): 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.: 1524 Placement Date: 10/02/2007 Weather Conditions: Cloudy, calm Time Sampled: 09:03am Batch time: 07:58am Temperature - Air: 730F Concrete: 880F Truck No: 1089 Ticket No: 88054810 Air Content: 3.6% Unit Weight (pcf): NA Overall Placement Location: Paving grading plan north - 535.16' 43 E 104.04 Pg C2, 02 Measured Slump (inches) 6.0 Sample Location: 60' south of Building 1 gridline E/3.0 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 4 1 10/05/2007 3 6.00 28.27 63,310 2,240 Unbonded Cap 4 2 10/09/2007 7 6.00 28.27 77,180 2,730 Shear 4 3 10/30/2007 28 6.00 28.27 89,850 3,180 Cone/Split 4 4 10/30/2007 28 6.00 28.27 87,990 3,110 Cone/Split Average 3,140 ., 4 5 11/27/2007 56 6.00 28.27 123,460 4,370 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, LId. (KW/KW) Page 4 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.: 300682 Project No.: 0712786 Date of Service: 10/02/2007 Report Date: 11/29/2007 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.): 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-1 064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 1524 Placement Date: 10/02/2007 Weather Conditions: Clear, calm Time Sampled: 05:15am Batch time: 04:27am Temperature - Air: 710F Concrete: 820F Truck No: 1089 Ticket No: 88054787 Air Content: 3.6% Unit Weight (pct): NA Overall Placement Location: Paving grading plan north - 535.16' 43 E 104.04 Pg C2, 02 Measured Slump (inches) 6.0 Sample Location: 120' south of Building 1 gridline E/2.0 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) (in2) (Ibs) (psi) Type 2 1 10/05/2007 3 6.00 28.27 65,990 2,330 Unbonded Cap 2 2 10/09/2007 7 6.00 28.27 83,660 2,960 Cone/Split 2 3 10/30/2007 28 6.00 28.27 103,900 3,670 Cone/Shear 2 4 10/30/2007 28 6.00 28.27 112,320 3,970 Cone/Split Average 3,820 2 5 11/27/2007 56 6.00 28.27 130,880 4,630 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/KW) 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.: 300682 Project No.: 0712786 Date of Service: 10/02/2007 Report Date: 11/29/2007 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.): 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.: 1524 Placement Date: 10/02/2007 Weather Conditions: Clear, calm Time Sampled: 03:50am Batch time: 03:14am Temperature - Air: 720F Concrete: 830F Truck No: 1090 Ticket No: 88054777 Air Content: 3.8% Unit Weight (pet): NA Overall Placement Location: Paving grading plan north - 535.16' 43 E 104.04 Pg C2, 02 Measured Slump (inches) 5.0 Sample Location: 60' south of Building 1 gridline E/1.0 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 1 1 10/05/2007 3 6.00 28.27 67,850 2,400 Unbonded Cap 1 2 10/09/2007 7 6.00 28.27 85,760 3,030 Cone/Split 1 3 10/30/2007 28 6.00 28.27 106,870 3,780 Cone/Split 1 4 10/30/2007 28 6.00 28.27 99,430 3,520 Cone/Split Average 3,650 1 5 11/27/2007 56 6.00 28.27 122,680 4,340 Shear Remarks: ***Revised 11/27/2007 to reflect correct sample location. *** 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 5