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Gateway BP(3.1)-LR070911 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.: 295188 Project No.: 0712786 Date of Service: 08/10/2007 Report Date: 09/11/2007 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: 3,600 psi @ 28 days Slump (in.): 4" - 6" 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: 08/10/2007 Weather Conditions: Clear Time Sampled: 02:40am Temperature - Air: 770F Truck No: 1371 Air Content: 5.0% Overall Placement Location: Pour G west of building 1 Batch time: 01 :55am Concrete: 840F Ticket No: 13693699 Unit Weight (pcf): NA Measured Slump (inches) 5.5 Sample Location: 20' north, 10' east 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 1 1 08/17/2007 7 6.00 28.27 103,360 3,660 Unbonded Cap 2 09/07/2007 28 6.00 28.27 123,310 4,360 Shear 3 09/07/2007 28 6.00 28.27 120,690 4,270 Cone/Split Average 4,310 4 10/05/2007 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/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.: 295188 Project No.: 0712786 Date of Service: 08/10/2007 Report Date: 09/11/2007 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: 3,600 psi @ 28 days Slump (in.): 4" - 6" 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: 08/10/2007 Weather Conditions: Clear Time Sampled: 03:15am Temperature - Air: 770F Truck No: 1038 Air Content: 4.8% Overall Placement Location: Pour G west of building 1 Batch time: 02:34am Concrete: 840F Ticket No: 13693708 Unit Weight (pcf): NA Measured Slump (inches) 5.5 Sample Location: 60' 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) (in2) (Ibs) (psi) Type 2 1 08/17/2007 7 6.00 28.27 102,100 3,610 Unbonded Cap 2 2 09/07/2007 28 6.00 28.27 121,870 4,310 Cone/Shear 2 3 09/07/2007 28 6.00 28.27 125,980 4,460 Cone/Split Average 4,380 2 4 10/05/2007 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/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.: 295188 Project No.: 0712786 Date of Service: 08/10/2007 Report Date: 09/11/2007 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: 3,600 psi @ 28 days Slump (in.): 4" - 6" 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.: 23601524 Placement Date: 08/10/2007 Weather Conditions: Clear Time Sampled: 05:40am Temperature - Air: 750F Truck No: 1364 Air Content: 5.0% Overall Placement Location: Pour G west of building 1 Batch time: 05:25am Concrete: 830F Ticket No: 13693736 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: 150' north, 10' west from southeast 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 08/17/2007 7 6.00 28.27 79,840 2,820 Unbonded Cap 3 2 09/07/2007 28 6.00 28.27 107,140 3,790 Cone/Split 3 3 09/07/2007 28 6.00 28.27 102,650 3,630 Shear Average 3,710 3 4 10/05/2007 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. (CHILB) 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.: 295188 Project No.: 0712786 Date of Service: 08/10/2007 Report Date: 09/11/2007 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: 3,600 psi @ 28 days Slump (in.): 4" - 6" 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: 08/10/2007 Weather Conditions: Clear Time Sampled: 08:00am Temperature - Air: nOF Truck No: 1015 Air Content: 5.0% Overall Placement Location: Pour G west of building 1 Batch time: 07:14am Concrete: 820F Ticket No: 13693759 Unit Weight (pcf): NA Measured Slump (inches) 5.0 Sample Location: 10' east, 5' north 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 4 1 08/17/2007 7 6.00 28.27 79,350 2,810 Unbonded Cap 4 2 09/07/2007 28 6.00 28.27 109,520 3,870 Cone/Shear 4 3 09/07/2007 28 6.00 28.27 110,890 3,920 Cone/Shear Average 3,900 4 4 10/05/2007 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. (CHfLB) 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 Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 Report of Concrete Compressive Strength Test Report No.: 295188 Project No.: 0712786 Date of Service: 08/10/2007 Report Date: 09/11/2007 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. Report Distribution: Orig: Transwestern Commercial Services (Dallas, TX) Attn: Mr. Ric Nelson (1-cc copy) 1-ec Constructors & Associates Attn: Mr. Frank Castro 1-cc City of Coppell Attn: Mr. Larry Davis 1-ec Mike Delvin AUn: Mr. Mike Delvin 1-cc Murray Construction Co., Inc. Attn: Mr. Terence Babler 1-cc City of Coppell Attn: Mr. Lee Stone 1-ec AECC, Inc. Attn: Mr. Brant Ince 1-ec Delaware I nvestment Advisers Attn: Mr. Keith Schinnerer PE 1-cc Aztec Environmental Attn: Mr. Mike Sexton Technician: Jimmy Hall Started: 12:45am Finished: 09:00am 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. (CHILB) Page 5 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.: 295017 Project No.: 0712786 Date of Service: 08/09/2007 Report Date: 09/11/2007 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: 259 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" 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 Mix Design I.D.: 336K15D4 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 02:30am Temperature - Air: 780F Truck No: 1347 Air Content: 5.5% Overall Placement Location: Paving on northwest corner of building 1, pour 2 Measured Slump (inches) 5.0 Batch time: 01 :29am Concrete: 870F Ticket No: 59011424 Unit Weight (pcf): NA Sample Location: 140' west, 200' south from northwest corner of building 1 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 1 1 08/16/2007 7 6.00 28.27 91,990 3,250 Unbonded Cap 1 2 09/06/2007 28 6.00 28.27 122,000 4,310 Cone/Split 1 3 09/06/2007 28 6.00 28.27 120,770 4,270 Cone/Split Average 4,290 4 10/04/2007 56 LlMITA TIONS 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. (KWILB) Page 1 of 7 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.: 295017 Project No.: 0712786 Date of Service: 08/09/2007 Report Date: 09/11/2007 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: 259 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design I.D.: 336K15D4 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 03:50am Temperature - Air: 790F Truck No: 1347 Air Content: 5.3% Overall Placement Location: Paving on northwest corner of building 1, pour 2 Measured Slump (inches) 5.0 Batch time: 03:12am Concrete: 860F Ticket No: 59011435 Unit Weight (pcf): NA Sample Location: 250' west, 150' south from northwest corner of building 1 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 2 1 08/16/2007 7 6.00 28.27 80,350 2,840 Unbonded Cap 2 2 09/06/2007 28 6.00 28.27 117,720 4,160 Cone/Split 2 3 09/06/2007 28 6.00 28.27 117,780 4,170 Cone/Split Average 4,160 2 4 10/04/2007 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/LB) Page 2 of 7 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.: 295017 Project No.: 0712786 Date of Service: 08/09/2007 Report Date: 09/11/2007 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: 259 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" 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 Mix Design I.D.: 336K15D4 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 05:21am Temperature - Air: 790F Truck No: 1307 Air Content: 5.1 % Overall Placement Location: Paving on northwest corner of building 1, pour 2 Meas u red Slump (inches) 5.0 Batch time: 04:37am Concrete: 860F Ticket No: 59011445 Unit Weight (pcf): NA Sample Location: 190' west, 110' south from northwest corner of building 1 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 3 1 08/16/2007 7 6.00 28.27 101,710 3,600 Unbonded Cap 3 2 09/06/2007 28 6.00 28.27 133,420 4,720 Cone/Split 3 3 09/06/2007 28 6.00 28.27 134,250 4,750 Cone/Split Average 4,730 3 4 10/04/2007 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. (KWILB) Page 3 of 7 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.: 295017 Project No.: 0712786 Date of Service: 08/09/2007 Report Date: 09/11/2007 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: 259 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design I.D.: 336K15D4 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 07:10am Temperature - Air: 820F Truck No: 1345 Air Content: 5.3% Overall Placement Location: Paving on northwest corner of building 1, pour 2 Measured Slump (inches) 5.0 Batch time: 06:49am Concrete: 860F Ticket No: 59011461 Unit Weight (pcf): NA Sample Location: 120' west, 85' south from northwest corner of building 1 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 4 1 08/16/2007 7 6.00 28.27 86,380 3,060 Unbonded Cap 4 2 09/06/2007 28 6.00 28.27 116,900 4,130 Cone/Split 4 3 09/06/2007 28 6.00 28.27 121 , 1 90 4,290 Cone/Split Average 4,210 4 4 10/04/2007 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/LB) Page 4 of 7 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.: 295017 Project No.: 0712786 Date of Service: 08/09/2007 Report Date: 09/11/2007 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: 259 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" 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 Mix Design I.D.: 336K15D4 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 09:20am Temperature - Air: 850F Truck No: 1375 Air Content: 5.4% Overall Placement Location: Paving on northwest corner of building 1, pour 2 Measured Slump (inches) 5.5 Batch time: 08:28am Concrete: 870F Ticket No: 59011482 Unit Weight (pcf): NA Sample Location: 40' west, 125' south from northwest corner of building 1 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 5 1 08/16/2007 7 6.00 28.27 80,460 2,850 Unbonded Cap 5 2 09/06/2007 28 6.00 28.27 119,580 4,230 Cone/Shear 5 3 09/06/2007 28 6.00 28.27 124,540 4,400 Shear Average 4,320 5 4 10/04/2007 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/LB) Page 5 of 7 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.: 295017 Project No.: 0712786 Date of Service: 08/09/2007 Report Date: 09/11/2007 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: 259 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design 1.0.: 336K15D4 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 10:50am Temperature - Air: 900F Truck No: 1257 Air Content: 5.1 % Overall Placement location: Paving on northwest corner of building 1, pour 2 Measured Slump (inches) 5.0 Batch time: 09:45am Concrete: 920F Ticket No: 59011494 Unit Weight (pcf): NA Sample location: 70' west, 50' south from northwest corner of building 1 REPORT OF TESTS Concrete Compressive Cylinder 5" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 6 1 08/16/2007 7 6.00 28.27 81,800 2,890 Unbonded Cap 6 2 09/06/2007 28 6.00 28.27 120,620 4,270 Cone/Split 6 3 09/06/2007 28 6.00 28.27 116,720 4,130 Cone/Split Average 4,200 6 4 10/04/2007 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/LB) Page 6 of 7 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: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 Report of Concrete Compressive Strength Test Report No.: 295017 Project No.: 0712786 Date of Service: 08/09/2007 Report Date: 09/11/2007 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. Report Distribution: Orig: Transwestern Cornmercial Services (Dallas, TX) Attn: Mr. Ric Nelson (1-cc copy) 1-ec Constructors & Associates Attn: Mr. Frank Castro 1-cc City of Coppell Attn: Mr. Larry Davis 1-ec Mike Delvin Attn: Mr. Mike Delvin 1-cc Murray Construction Co., Inc. Attn: Mr. Terence Babler 1-cc City of Coppell Attn: Mr. Lee Stone 1-ec AECC, Inc. Attn: Mr. Brant Ince 1-ec Delaware Investment Advisers Attn: Mr. Keith Schinnerer PE 1-cc Aztec Environmental Attn: Mr. Mike Sexton Technician: Danny Howard Started: 01 :OOam Finished: 01 :OOpm 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 neports 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. (KWILB) Page 7 of? 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.: 295447 Project No.: 0712786 Date of Service: 08/13/2007 Report Date: 09/11/2007 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 1.0.: 830J1521 Placement Date: 08/13/2007 Weather Conditions: Clear Time Sampled: 03:40pm Temperature- Air: 1040F Truck No: 1198 Air Content: NA Overall Placement Location: Grade beam, building 1, 7.5/E -10/E Batch time: 03:19pm Concrete: 1000F Ticket No: 13693926 Unit Weight (pcf): NA 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 1 1 08/20/2007 7 6.00 28.27 79,940 2,830 Unbonded Cap 2 09/10/2007 28 6.00 28.27 100,310 3,550 Cone/Shear 3 09/10/2007 28 6.00 28.27 102,510 3,630 Cone/Shear Average 3,590 4 10108/2007 56 Remarks: Water added at site: 5 gallons LIMITATIONS: The test results presented herein were prepared based upDn the specific samples prDvided fDr testing. We assume nD responsibility fDr variation in quality (compDsition, appearance, etc.) Dr any Dther feature Df similar subject matter prDvided by persDns Dr cDnditiDns Dver which we have nD contrDI. Our letters and repDrts are fDr the exclusive use Df the clients tD whDm they are addressed and shall nDt be reprDduced except in full withDut the written apprDval Df RDne Engineering Services, Ltd. (KW/LB) Page 1 of 2 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: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 Report of Concrete Compressive Strength Test Report No.: 295447 Project No.: 0712786 Date of Service: 08/13/2007 Report Date: 09/11/2007 Project: Gateway Business Center Cappell, 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 standar.ds. Report Distribution: Orig: Transwestern Commercial Services (Dallas, TX) AUn: Mr. Ric Nelson (1-cc copy) 1-ec Constructors & Associates AUn: Mr. Frank Castro 1-cc City of Coppell AUn: Mr. Larry Davis 1-ec Mike Delvin AUn: Mr. Mike Delvin 1-cc Murray Construction Co., Inc. Attn: Mr. Terence Babler 1-cc City of Coppell AUn: Mr. Lee Stone 1-ec AECC, Inc. AUn: Mr. Brant Ince 1-ec Delaware Investment Advisers Attn: Mr. Keith Schinnerer PE 1-cc Aztec Environmental AUn: Mr. Mike Sexton Technician: Tommy Chapa Started: 02:00pm Finished: 05:15pm Rone Engineering V~..~ 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/LB) Page 2 of 2