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Gateway BP(3.1)-LR071211 Rone En;~ 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 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304062 Project No.: 0712786 Date of Service: 11/0212007 Report Date: 12111/2007 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: 88 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 4% - 6% Test Method: ASTM C-172 ASTM C-31 (except 1 0.1 .2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design 1.0.: 23601524 Placement Date: 11/0212007 Weather Conditions: Cloudy Time Sampled: 05:30am Temperature - Air: 650F Truck No: 1382 Air Content: 3.0% Overall Placement Location: Fire lane and park paving on north side of building 2 Measured Slump (inches) 8.0 Batch time: 04:37am Concrete: 710F Ticket No: 88056125 Unit Weight (pct): NA Sample Location: 20' north, 55' east from corner of building 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 2 1 11/09/2007 7 6.00 28.27 62,860 2,220 Shear 2 2 11/30/2007 28 6.00 28.27 91,700 3,240 Cone/Shear 2 3 11/30/2007 28 6.00 28.27 97,270 3,440 Cone/Split Average 3,340 * 2 4 12/28/2007 56 * Does not comply with specified strength 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. (CH/KW) Page 2 of 5 Rone Eni~ 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 Freldrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304062 Project No.: 0712786 Date of Service: 11/02/2007 Report Date: 12/11/2007 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: 88 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 4% - 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.: 23601524 Placement Date: 11/02/2007 Weather Conditions: Cloudy Time Sampled: 08:00am Temperature - Air: 650F Truck No: 1206 Air Content: 4.2% Overall Placement Location: Fire lane and park paving on north side of building 2 Measured Slump (inches) 8.5 Batch time: 06:27am Concrete: 710F Ticket No: 88056137 Unit Weight (pet): NA Sample Location: 25' north, 5' west from corner of building 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 3 1 11/09/2007 7 6.00 28.27 58,830 2,080 Shear 3 2 11/30/2007 28 6.00 28.27 93,610 3,310 Cone/Split 3 3 11/30/2007 28 6.00 28.27 96,250 3,400 Cone/Split Average 3,360 * 3 4 12/28/2007 56 * Does not comply with specified strength Remarks: Water added at site: 10 gallons LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/KW) Page 3 of 5 Rone En~== Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX n040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214)630-9745 Report of Concrete Compressive Strength Test Report No.: 304062 Project No.: 0712786 Date of Service: 11/02/2007 Report Date: 12/11/2007 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: 88 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 4% - 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.: 23601524 Placement Date: 11/02/2007 Weather Conditions: Cloudy Time Sampled: 09:30am Temperature - Air: 650F Truck No: 1070 Air Content: 3.9% Overall Placement Location: Fire lane and park paving on north side of building 2 Measured Slump (inches) 8.0 Batch time: 07:49am Concrete: 710F Ticket No: 88056146 Unit Weight (pet): NA Sample Location: 35' east, 20' north from southeast building comer REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in") (Ibs) (psi) Type - - 4 1 11/09/2007 7 6.00 28.27 71,400 2,530 Shear 4 2 11/30/2007 28 6.00 28.27 95,600 3,380 Shear 4 3 11/30/2007 28 6.00 28.27 99,510 3,520 Cone/Shear Average 3,450 * 4 4 12/28/2007 56 * 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. (CHIKW) Page 4 of 5 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 1 1 11/15/2007 7 6.00 28.27 77,760 2,750 Cone/Split 1 2 12/06/2007 28 6.00 28.27 104,510 ~o Shear 1 3 12/06/2007 28 6.00 28.27 103,230 50 Cone/Split Average 3,670 1 4 01/03/2008 56 Rone Eni== Client: Transwestern Commerci 5001 Spring Valle Dallas, TX 7 Constructors & Associates pplier: Redi-Mix Plant: P136 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 4% - 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 Remarks: Water added at site: 5 gallons 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.: 304766 Project No.: 0712786 Date of Service: 11/08/2007 Report Date: 12/11/2007 PROJECT DATA Mix Design 1.0.: 23601524 Placement Date: 11/08/2007 Weather Conditions: Clear Time Sampled: 07:15am Temperature - Air: 600F Truck No: 1358 Air Content: NA Overall Placement Location: Paving, between buildings 1 and 2 Batch time: 06:02am Concrete: 610F Ticket No: 13601416 Unit Weight (pet): NA Measured Slump (inches) 8.0 Sample Location: 25' west, 10' south from southwest corner of building 2 ~\l~ '\1\~O 8 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (TMlED) Page 1 of 4 Rone Eni== Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX n040 4421 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304766 Project No.: 0712786 Date of Service: 11/08/2007 Report Date: 12/11/2007 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: P136 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 4% - 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 Batch time: 04:33am Concrete: 650F Ticket No: 1360369 Unit Weight (pet): NA Measured Slump (inches) 5.0 Mix Design I.D.: 23601524 Placement Date: 11/08/2007 Weather Conditions: Clear Time Sampled: 05:30am Temperature - Air: 600F Truck No: 1190 Air Content: NA Overall Placement Location: Paving for parking, 1) southwest parking area, building 2, 2) parking area between buildings 1 and 2 (cont below) Sample Location: 40' south, 60' west from southwest corner of building 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 2 1 11/15/2007 7 6.00 28.27 99,710 3,530 Cone/Split 2 2 12/06/2007 28 6.00 28.27 118,670 4,200 Cone/Split 2 3 12/06/2007 28 6.00 28.27 107,230 3,790 Cone/Split Average 3,990 2 4 01/03/2008 56 Remarks: Cant: 3) Parking area off southeast corner of building 2. Water added at site: 10 gallons LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided fortesling. 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. (TMIED) Page 2 of 4 Rone Eni~ Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7101 W Little York, Ste 600, Houston, TX 71040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 304766 Project No.: 0712786 Date of Service: 11/08/2007 Report Date: 12/11/2007 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: P136 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 4% - 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 Batch time: 08:30am Concrete: 600F Ticket No: 13601453 Unit Weight (pet): NA Measured Slump (inches) 8.0 Mix Design 1.0.: 23601524 Placement Date: 11/08/2007 Weather Conditions: Clear Time Sampled: 09:00am Temperature - Air: 600F Truck No: 1193 Air Content: 2.5% Overall Placement Location: Paving, 1) southwest from building 2, 2) southeast corner of building 2, 3) between buildings 1 and 2 Sample Location: 60' east, 20' south from southeast corner of building 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 3 1 11/15/2007 7 6.00 28.27 92,760 3,280 Cone/Split 3 2 12/06/2007 28 6.00 28.27 111,850 3,960 Cone/Split 3 3 12/06/2007 28 6.00 28.27 107,670 3,810 Cone/Split Average 3,880 3 4 01/03/2008 56 Remarks: Water added at site: 10 gallons LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (TMIED) Page 3 of 4 Rone Eni== 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 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 303891 Project No.: 0712786 Date of Service: 11/01/2007 Report Date: 12/11/2007 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: 88 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 Measured Slump (inches) 4.75 Mix Design I.D.: 23601524 Placement Date: 11/01/2007 Weather Conditions: Calm, clear Time Sampled: 04:00am Batch time: 02:33am Temperature - Air: 500F Concrete: 740F Truck No: 1067 Ticket No: 88055996 Air Content: 2.8% Unit Weight (pct): NA Overall Placement Location: Paving - south side of building 2 from 5'-160' south, 0'-220' east from southwest corner, east side of (continue) Sample Location: 20' south, 20' east from southwest corner of building 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 - 1 1 11/08/2007 7 6.00 28.27 67,640 2,390 Shear 1 2 11/29/2007 28 6.00 28.27 1 09,150 3,860 Cone/Split 1 3 11/29/2007 28 6.00 28.27 111 ,080 3,930 Cone/Split Average 3,890 1 4 12/27/2007 56 Remarks: building 2 from 0'-150' north, 5'-50' east from southeast corner Batch plant notified about air test results LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/ED) Page 1 of 6 Rone En2~ 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 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 303891 Project No.: 0712786 Date of Service: 11/01/2007 Report Date: 12/11/2007 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: 88 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 Measured Slump (inches) 5.0 Mix Design 1.0.: 23601524 Placement Date: 11/01/2007 Weather Conditions: Calm, clear Time Sampled: 06:08am Batch time: 05:21 am Temperature - Air: 520F Concrete: 740F Truck No: 1245 Ticket No: 88056010 Air Content: 5.5% Unit Weight (pet): NA Overall Placement Location: Paving _ south side of building 2 from 5'-160' south, 0'-220' east from southwest corner, east side of (continue) Sample Location: 110' south, 100' esat from southwest corner of building 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 2 1 11/08/2007 7 6.00 28.27 69,660 2,460 Shear 2 2 11/29/2007 28 6.00 28.27 124,150 4,390 Cone/Split 2 3 11/29/2007 28 6.00 28.27 120,010 4,240 Cone/Split Average 4,320 2 4 12/27/2007 56 Remarks: building 2 from 0'-150' north, 5'-50' east from southeast corner 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 mailer provided by persons or conditions over which we have no control. Our lellers and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/ED) Page 2 of 6 Rone Eni=a 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 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 303891 Project No.: 0712786 Date of Service: 11/01/2007 Report Date: 12/11/2007 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: 88 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 Measured Slump (inches) 4.5 Mix Design 1.0.: 23601524 Placement Date: 11/01/2007 Weather Conditions: Calm, clear Time Sampled: 07:09am Batch time: 06:29am Temperature - Air: 470F Concrete: 720F Truck No: 1090 Ticket No: 88056021 Air Content: 3.8% Unit Weight (pet): NA Overall Placement Location: Paving - south side of building 2 from 5'-160' south, 0'-220' east from southwest corner, east side of (continue) Sample Location: 90' south, 30' east from southeast corner of building 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 3 1 11/08/2007 7 6.00 28.27 81,330 2,880 Cone/Split 3 2 11/29/2007 28 6.00 28.27 116,170 4,110 Cone/Split 3 3 11/29/2007 28 6.00 28.27 114,310 4,040 Cone/Split Average 4,080 3 4 12/27/2007 56 Remarks: building 2 from 0'-150' north, 5'-50' east from southeast corner LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, LId. (CH/ED) Page 3 of 6 Rone Eni== 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 Freldrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 303891 Project No.: 0712786 Date of Service: 11/01/2007 Report Date: 12/11/2007 Project: Gateway Business Center Coppell, Texas Se rvices: 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: 88 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 Measured Slump (inches) 4.0 Mix Design 1.0.: 23601524 Placement Date: 11/01/2007 Weather Conditions: Calm, clear Time Sampled: 08:48am Batch time: 07:54am Temperature - Air: 510F Concrete: 740F Truck No: 1337 Ticket No: 88056034 Air Content: 3.1 % Unit Weight (pet): NA Overall Placement Location: Paving _ south side of building 2 from 5'-160' south, 0'-220' east from southwest corner, east side of (continue) Sample Location: 3D' south, 40' east from southeast corner of building 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 4 1 11/08/2007 7 6.00 28.27 103,010 3,640 Cone/Split 4 2 11/29/2007 28 6.00 28.27 130,390 4,610 Cone/Split 4 3 11/29/2007 28 6.00 28.27 137,240 4,850 Cone/Split Average 4,730 4 4 12/27/2007 56 RemarkS: building 2 from 0'-150' north, 5'-50' east from southeast corner LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition. appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/ED) Page 4 of 6 Rone Eni== Client: Transwestem Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 303891 Project No.: 0712786 Date of Service: 11/01/2007 Report Date: 12/11/2007 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: 88 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 Measured Slump (inches) 4.5 Mix Design I.D.: 23601524 Placement Date: 11/01/2007 Weather Conditions: Calm, clear Time Sampled: 10:36am Batch time: 09:15am Temperature - Air: 580F Concrete: 740F Truck No: 1245 Ticket No: 88056051 Air Content: 4.6% Unit Weight (pct): NA Overall Placement Location: Paving - south side of building 2 from 5'-160' south, 0'-220' east from southwest corner, east side of (continue) Sample Location: 70' north, 30' east from southeast corner of building 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 5 1 11/08/2007 7 6.00 28.27 71,740 2,540 Shear 5 2 11/29/2007 28 6.00 28.27 124,210 4,390 Cone/Split 5 3 11/29/2007 28 6.00 28.27 122,420 4,330 Cone/Split Average 4,360 5 4 12/27/2007 56 Remarks: building 2 from 0'-150' north, 5'-50' east from southeast corner Water added at site: 30 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 subjecl mailer 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 withoulthe written approval of Rone Engineering Services, LId. (CHIED) Page 5 of 6 Rone Ene== 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 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301474 Project No.: 0712786 Date of Service: 10/09/2007 Report Date: 12/11/2007 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: 259 Specification Requirements Strength: 3,500 psi @ 28 days Slump (in.): 4" - 6" Air (%): 2% - 4% 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.: 23501501 Placement Date: 10/09/2007 Weather Conditions: Clear Time Sampled: 03:10am Temperature - Air: 710F Truck No: 1350 Air Content: 2.0% Overall Placement Location: Paving - north of building parking lot Batch time: 02:28am Concrete: 870F Ticket No: 59015480 Unit Weight (pct): NA Measured Slump (inches) 5.0 Sample Location: 5' west, 10' south from northeast comer of paving REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type - 1 1 10/16/2007 7 6.00 28.27 100,580 3,560 Cone/Split 1 2 11/06/2007 28 6.00 28.27 138,040 4,880 Shear 1 3 11/06/2007 28 6.00 28.27 139,800 4,940 Shear Average 4,910 1 4 12/04/2007 56 6.00 28.27 1 52,190 5,380 Shear Remarks: Water added at site: 5 gallons LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/ED) Page 1 of 6 Rone En~== 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 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301474 Project No.: 0712786 Date of Service: 10/09/2007 Report Date: 12/11/2007 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: 3,500 psi @ 28 days Slump (in.): 4" - 6" Air (%): 2% - 4% 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.: 23501501 Placement Date: 10/09/2007 Weather Conditions: Clear Time Sampled: 05:20am Temperature - Air: 710F Truck No: 1347 Air Content: 2.2% Overall Placement Location: Paving - north of building parking lot Measured Slump (inches) 5.5 Batch time: 04:33am Concrete: 880F Ticket No: 59015494 Unit Weight (pet): NA Sample Location: 100' west, 15' north from southeast corner of paving REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in") (Ibs) (psi) Type - - 2 1 1 0/16/2007 7 6.00 28.27 91,450 3,230 Cone/Shear 2 2 11/06/2007 28 6.00 28.27 133,930 4,740 Cone/Split 2 3 11/06/2007 28 6.00 28.27 109,350 3,870 Cone/Split Average 4,300 2 4 12/04/2007 56 6.00 28.27 142,270 5,030 Shear Remarks: Water added at site: 5 gallons LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/ED) Page 2 of 6 Rone Eni~ Client: Transwestem Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, ste 600, Houston, TX 77040 4421 Freldrich, ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301474 Project No.: 0712786 Date of Service: 10/09/2007 Report Date: 12/11/2007 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: 3,500 psi @ 28 days Slump (in.): 4" - 6" Air (%): 2% - 4% 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.: 23501501 Placement Date: 10/09/2007 Weather Conditions: Clear Time Sampled: 07:30am Temperature - Air: 710F Truck No: 1307 Air Content: 2.0% Overall Placement Location: Paving - north of building parking lot Measured Slump (inches) 6.0 Batch time: 06:01 am Concrete: 870F Ticket No: 53015501 Unit Weight (pet): NA Sample Location: 200' west, 10' south from northeast corner of paving REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in") (Ibs) (psi) Type - - 3 1 10/16/2007 7 6.00 28.27 103,300 3,650 Cone/Split 3 2 11/06/2007 28 6.00 28.27 125,160 4,430 Shear 3 3 11/06/2007 28 6.00 28.27 134,880 4,770 Shear Average 4,600 3 4 12/04/2007 56 6.00 28.27 150,550 5,320 Shear 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, LId. (CH/ED) Page 3 of 6 Rone Eni=::; 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.: 301474 Project No.: 0712786 Date of Service: 10/09/2007 Report Date: 12/11/2007 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: 3,500 psi @ 28 days Slump (in.): 4" - 6" Air (%): 2% - 4% 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.: 23501501 Placement Date: 10/09/2007 Weather Conditions: Clear Time Sampled: 09:30am Temperature - Air: 750F Truck No: 1257 Air Content: 2.2% Overall Placement Location: Paving - north of building parking lot Measu red Slump (inches) 5.5 Batch time: 08:28am Concrete: 880F Ticket No: 59015523 Unit Weight (pet): NA Sample Location: 60' east, 10' south from northwest corner of paving REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type - - 4 1 1 0/16/2007 7 6.00 28.27 103,260 3,650 Cone/Split 4 2 11/06/2007 28 6.00 28.27 132,410 4,680 Cone/Split 4 3 11/06/2007 28 6.00 28.27 128,900 4,560 Shear Average 4,620 4 4 12/04/2007 56 6.00 28.27 150,790 5,330 Shear Remarks: Water added at site: 5 gallons LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CHIED) Page 4 of 6 Rone Eni== 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 Freldrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301474 Project No.: 0712786 Date of Service: 10/09/2007 Report Date: 12/11/2007 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: 259 Specification Requirements Strength: 3,500 psi @ 28 days Slump (in.): 4" - 6" Air (%): 2% - 4% 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.: 23501501 Placement Date: 10/09/2007 Weather Conditions: Clear Time Sampled: 09:50am Temperature - Air: 740F Truck No: 1264 Air Content: 2.4% Overall Placement Location: Paving - north of building parking lot Batch time: 09:10am Concrete: 880F Ticket No: 59015535 Unit Weight (pet): NA Measured Slump (inches) 5.0 Sample Location: 30' 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) (in') (Ibs) (psi) Type - 5 1 10/16/2007 7 6.00 28.27 95,240 3,370 Cone/Shear 5 2 11/06/2007 28 6.00 28.27 125,040 4,420 Cone/Split 5 3 11/06/2007 28 6.00 28.27 125,620 4,440 Cone/Shear Average 4,430 5 4 12/04/2007 56 6.00 28.27 145,720 5,150 Cone/Split Remarks: Water added at site: 30 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 cond~ions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (CH/ED) Page 5 of 6 Rone Eni== 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 Freidrlch, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301781 Project No.: 0712786 Date of Service: 10/11/2007 Report Date: 12/11/2007 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: 136 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" - 6" Air (%): 4% - 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 Measured Slump (inches) 6.0 Mix Design 1.0.: 23601524 Placement Date: 10/11/2007 Weather Conditions: Clear, calm Time Sampled: 03:36am Batch time: 02:34am Temperature - Air: 600F Concrete: 770F Truck No: 1035 Ticket No: 13699228 Air Content: 4.0% Unit Weight (pet): NA Overall Placement Location: Paving - building 1 on south side and west side - parking spaces and driveway Sample Location: Grid line Building 1, A 1 50' west, 50' north 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 10/18/2007 7 6.00 28.27 100,280 3,550 Shear 1 2 11/08/2007 28 6.00 28.27 131,690 4,660 Cone/Split 1 3 11/08/2007 28 6.00 28.27 135,220 4,780 Cone/Split Average 4,720 1 4 12/06/2007 56 6.00 28.27 142,730 5,050 Shear LIMIT ATfONS: 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. (DMlED) Page 1 of 5 Rone Eni== 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.: 301781 Project No.: 0712786 Date of Service: 10/11/2007 Report Date: 12/11/2007 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: 136 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" - 6" Air (%): 4% - 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 Batch time: 04:11am Concrete: 800F Ticket No: 13699241 Unit Weight (pct): NA Measured Slump (inches) 5.0 Mix Design I.D.: 23601524 Placement Date: 10/11/2007 Weather Conditions: Clear Time Sampled: 05:10am Temperature - Air: 600F Truck No: 1032 Air Content: 3.5% Overall Placement Location: Paving - building 1 on south side and west side - parking spaces and driveway Sample Location: Grid line Building 1, E3, 50' south 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 1 0/18/2007 7 6.00 28.27 89,100 3,150 Shear 2 2 11/08/2007 28 6.00 28.27 119,850 4,240 Shear 2 3 11/08/2007 28 6.00 28.27 116,680 4,130 Shear Average 4,180 2 4 12/06/2007 56 6.00 28.27 133,610 4,730 Cone/Split 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 mailer provided by persons or conditions over which we have no control. Our lellers 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. (DMIED) Page 2 of 5 Rone En~~ 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.: 301781 Project No.: 0712786 Date of Service: 10/11/2007 Report Date: 12/11/2007 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: 136 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" - 6" Air (%): 4% - 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 Batch time: 05:37am Concrete: 800F Ticket No: 13699254 Unit Weight (pet): NA Measured Slump (inches) 4.0 Mix Design I.D.: 23601524 Placement Date: 10/11/2007 Weather Conditions: Sunny Time Sampled: 07:25am Temperature - Air: 600F Truck No: 1185 Air Content: 4.0% Overall Placement Location: Paving - building 1 on south side and west side - parking spaces and driveway Sample Location: Grid line Building 1, E 1, 15' south, 50' west 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 10/18/2007 7 6.00 28.27 104,810 3,710 Cone/Split 3 2 11/08/2007 28 6.00 28.27 130,520 4,620 Cone/Split 3 3 11/08/2007 28 6.00 28.27 137,970 4,880 Cone/Split Average 4,750 3 4 12/06/2007 56 6.00 28.27 153,540 5,430 Shear LIMiT A TIONS: The lesl results presenled herein were prepared based upon Ihe specific samples provided for lesling. 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 10 whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, LId. (DMIED) Page 3 of 5 Rone Eni=a Client: Transwestem Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX n040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 301781 Project No.: 0712786 Date of Service: 10/11/2007 Report Date: 12/11/2007 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: 136 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" - 6" Air (%): 4% - 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 Batch time: Concrete: 79DF Ticket No: 13699281 Unit Weight (pet): NA Measured Slump (inches) 4.75 Mix Design 1.0.: 23601524 Placement Date: 10/11/2007 Weather Conditions: Sunny Time Sampled: I 09:00am Temperature - Air: 69DF Truck No: 1033 Air Content: 5.0% Overall Placement Location: Paving - building 1 on south side and west side - parking spaces and driveway Sample Location: Grid line Building 1 , E6, 30' south 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 10/18/2007 7 6.00 28.27 87,700 3,100 Cone/Split 4 2 11/08/2007 28 6.00 28.27 120,990 4,280 Cone/Split 4 3 11/08/2007 28 6.00 28.27 113,410 4,010 Cone/Split Average 4,150 4 4 12/06/2007 56 6.00 28.27 130,630 4,620 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. (DMIED) Page 4 of 5 Rone En~~ 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.: 304062 Project No.: 0712786 Date of Service: 11/02/2007 Report Date: 12/11/2007 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: 88 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 3" - 5" Air (%): 4% - 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.: 23601524 Placement Date: 11/02/2007 Weather Conditions: Cloudy Time Sampled: 04:30am Temperature - Air: 600F Truck No: 1070 Air Content: 2.5% Overall Placement Location: Fire lane and park paving on north side of building 2 Measured Slump (inches) 8.0 Batch time: 04:09am Concrete: 710F Ticket No: 88056117 Unit Weight (pet): NA Sample Location: 45' west, 40' north from northwest corner of building 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 1 1 11/09/2007 7 6.00 28.27 71,700 2,540 Cone/Split 1 2 11/30/2007 28 6.00 28.27 100,570 3,560 Cone/Split 1 3 11/30/2007 28 6.00 28.27 94,070 3,330 Cone/Split Average 3,440 * 1 4 12/28/2007 56 * Does not comply with specified strength 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, LId. (CH/KW) Page 1 of 5