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Gateway BP(3.1)-LR070906 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.: 297075 Project No.: 0712786 Date of Service: 08/28/2007 Report Date: 09/06/2007 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% - 5% Test Method: ASTM C-172 ..~ UIi Cp3i (except 12.1.2) 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: 08/28/2007 Weather Conditions: Cloudy, calm Time Sampled: 03:02am Batch time: 02:23am Temperature - Air: 700F Concrete: 830F Truck No: 1187 Ticket No: 13695404 Air Content: 5.3% Unit Weight (pcf): NA Overall Placement Location: I-'Clving, I'l-lUU':i2!.2I..: I to i:.:L~~h_, .Lc;: 0, P9 _' ;. _ i Measured Slump (inches) 5.0 Sample Location: Same as above REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 1 1 09/04/2007 7 6.00 28.27 116,490 4,120 Cone/Shear 2 09/25/2007 28 3 09/25/2007 28 4 10/23/2007 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. (TM!LS) 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.: 297075 Project No.: 0712786 Date of Service: 08/28/2007 Report Date: 09/06/2007 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 Measured Slump (inches) 5.0 Mix Design I.D.: 1524 Placement Date: 08/28/2007 Weather Conditions: Cloudy, calm Time Sampled: 04:30am Batch time: 03:28am Temperature - Air: 710F Concrete: 860F Truck No: 136 Ticket No: 13695414 Air Content: 5.0% Unit Weight (pet): NA Overall Placement Location: lu. r.~-F!,l'jmg-;i'r"f1.J1J:.JLr2/ [I to E"'I~S4.!/ h7&, pg (: i.Ji Contractor: Constructors & Associates Concrete Supplier: Redi-Mix Plant: 136 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" - 6" Air (%): 3% - 5% Test Method: ASTM C-172 ASTr..,1 C3"1 (elffiBpt ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Sample Location: Same as above REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type - 2 1 09/04/2007 7 6.00 28.27 115,270 4,080 Cone/Split 2 2 09/25/2007 28 2 3 09/25/2007 28 2 4 10/23/2007 56 Remarks: Water added at site: 10 gallons LIMITATIONS The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (TMlLB) Page 2 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.: 297075 Project No.: 0712786 Date of Service: 08/28/2007 Report Date: 09/06/2007 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 Mix Design 1.0.: 1524 Concrete Supplier: Redi-Mix Placement Date: 08/28/2007 Plant: 136 Weather Conditions: Cloudy, calm Specification Requirements Time Sampled: 04:53am Batch time: 04:31am Strength: 3,600 psi @ 28 days Temperature - Air: 730F Concrete: 900F Slump (in.): 4" - 6" Truck No: 1032 Ticket No: 13695425 Air (%): 3% - 5% Air Content: 4.9% Unit Weight (pct): NA Test Method: ASTM C-172 Overall Placement Location: ASTM C'31 (ex1:'.3j_L~6..T..2"'r--FaViITg:-W;;Y1Ai~ou.9060 (ot:=2"99563 1017, pg C"1.01 ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Measured Slump (inches) 5.5 Sample Location: Same as above REPORT OF TESTS Cylinder Marked Date Set No. Tested 3 1 09/04/2007 3 2 09/25/2007 3 3 09/25/2007 3 4 10/23/2007 Age (days) 7 Diameter (in) 6.00 Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 113,850 Area (in2) 28.27 Compressive Strength (psi) 4,030 Fracture Type Cone/Split 28 28 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, LId. (TMILB) 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.: 297075 Project No.: 0712786 Date of Service: 08/28/2007 Report Date: 09/06/2007 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 (%): 3% - 5% Test Method: ASTM C-172 i\STM C-3 t texcepl'rO-:-i .2) -~- ASTM C-143 ASTM C-231 ASTM C-1 064 ASTM C-138 ASTM C-39 Mix Design I.D.: 1524 Placement Date: 08/28/2007 Weather Conditions: Cloudy, calm Time Sampled: 07:03am Batch time: 06:16am Temperature - Air: 730F Concrete: 880F Truck No: 1187 Ticket No: 13695443 Air Content: 4.5% Unit Weight (pcf): NA Overall Placement Location: -Favlng, N-' UUi:rdU.-auoU fQE-2!:J!:J5tiJ. 101 j, pg (; i .01 Measured Slump (inches) 5.0 Sample Location: Same as above REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 85,270 Cylinder Marked Date Age Set No. Tested (days) 4 1 09/04/2007 7 4 2 09/25/2007 28 4 3 09/25/2007 28 4 4 1 0/23/2007 56 Diameter (in) 6.00 Remarks: Water added at site: 10 gallons Area (in') 28.27 Compressive Strength (psi) 3,020 Fracture Type 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. (TMfLB) 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.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 09/06/2007 Project: ateway 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 REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Maximum Compressive Age Diameter Area Load Strength Fracture (days) (in) (in') (Ibs) (psi) Type 7 6.00 28.27 71,180 2,520 Unbonded Cap 28 6.00 28.27 92,120 Cone/Split 28 6.00 28.27 85,250 Cone/Split Average 56 Contractor: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTr.~ C-231 ASTM C-1 064 ASTM C-138 ASTM C-39 Cylinder Marked Set No. - - 1 1 Date Tested 08/14/2007 1 1 2 3 09/04/2007 09/04/2007 4 10/02/2007 Mix Design I.D.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 02:30am Batch time: 01 :24am Temperature - Air: 820F Concrete: 860F Truck No: 1378 Ticket No: 13853996 Air Content: 1.3% Unit Weight (pet): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 4.5 Sample Location: 60' west, 20' south from northwest building corner (\{~ * Does not comply with specified strength Remarks: Dowels were placed prior to con concrete placement. placement; discrepancies noted on report #294654 were corrected prior to 1J''1/~7 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 1 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 09/06/2007 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 OF TESTS Concrete Compressive Cylinder 6" x 12" Maximum Compressive Diameter Area Load Strength Fracture (in) (in') (Ibs) (psi) Type 6.00 28.27 75,000 2,650 Unbonded Cap 6.00 28.27 95,700 3,380 Cone/Split 6.00 28.27 98,430 3,480 Cone/Split Average 3,430 * Contractor: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-731 ASTM C-1064 ASTM C-138 ASTM C-39 Cylinder Marked Date Set No. Tested 2 1 08/14/2007 2 2 09/04/2007 2 3 09/04/2007 2 4 10/02/2007 Age (days) 7 28 28 56 PROJECT DATA Mix Design I.D.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 03:30am Batch time: 02:23am Temperature - Air: 810F Concrete: 850F Truck No: 1281 Ticket No: 13554004 Air Content: 3.4% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 5.0 Sample Location: 105' west, 15' south from northwest building corner * Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (KW/LB) Page 2 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 09/06/2007 Project: Gateway Business Center Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 04:45am Batch time: 04: 11 am Temperature - Air: 830F Concrete: 850F Truck No: 1351 Ticket No: 13554015 Air Content: 3.3% Unit Weight (pet): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 5.0 Sample Location: 150' west, 25' south from northwest building corner REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 3 1 08/14/2007 7 6.00 28.27 77,680 2,750 Unbonded Cap 3 2 09/04/2007 28 6.00 28.27 94,760 3,350 Cone/Split 3 3 09/04/2007 28 6.00 28.27 99,640 3,520 Cone/Split Average 3,440 * 3 4 10/02/2007 56 * 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. (KWfLB) Page 3 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste GOO, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 09106/2007 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 OF TESTS Concrete Compressive Cylinder 6" x 12" Maximum Compressive Age Diameter Area Load Strength Fracture (days) (in) (in') (Ibs) (psi) Type 7 6.00 28.27 64,250 2,270 Unbonded Cap 28 6.00 28.27 89,740 3,170 Cone/Split 28 6.00 28.27 84,4 1 0 2,990 Cone/Split Average 3,080 * 56 Contractor: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Cylinder Marked Date Set No. Tested 4 1 08/14/2007 4 2 09/04/2007 4 3 09/04/2007 4 4 10/02/2007 PROJECT DATA Mix Design I.D.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 07:25am Batch time: 05:32am Temperature - Air: 830F Concrete: 870F Truck No: 1278 Ticket No: 13554024 Air Content: 3.2% Unit Weight (pet): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 4.5 Sample Location: 240' west, 25' south from northwest building corner * 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/LB) Page 4 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 09/06/2007 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 OF TESTS Concrete Compressive Cylinder 6" x 12" Maximum Compressive Age Diameter Area Load Strength Fracture (days) (in) (in') (Ibs) (psi) Type 7 6.00 28.27 65,050 2,300 Unbonded Cap 28 6.00 28.27 84,600 2,990 Shear 28 6.00 28.27 81,620 2,890 Cone/Split Average 2,940 * 56 Contractor: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Cylinder Marked Date Set No. Tested 5 1 08/14/2007 5 2 09/04/2007 5 3 09/04/2007 5 4 10/02/2007 PROJECT DATA Mix Design I.D.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 09:40am Batch time: 08:47am Temperature - Air: 850F Concrete: 900F Truck No: 1393 Ticket No: 13554043 Air Content: 3.2% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 6.0 Sample Location: 220' west, 50' south from northwest building corner * 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 ietters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in fuli without the written approval of Rone Engineering Services, Ltd. (KWILB) Page 5 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 09/06/2007 Project: Gateway Business Center Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" maximum Air (%): 3% - 6% T est Method: ASTM C-1 72 ASTM C-31 (except 10.1.2) ASTM C-143 ASn,1 C-2~1 ASTM C-1 064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 12:20pm Batch time: 11 :11am Temperature - Air: 890F Concrete: 920F Truck No: 1248 Ticket No: 13554069 Air Content: 3.3% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 6.0 Sample Location: 170' west, 100' south from northwest building corner REPORT OF TESTS Cylinder Marked Set No. - - 6 1 Date Tested 08/14/2007 Age -TJP- 28 28 Diameter (in) 6.00 6 2 6 3 09/04/2007 09/04/2007 6 4 10/02/2007 56 (> Concrete Compressive Cylinder 6" x 12" Maximum Load (Ibs) 47,980 Area (in2) 28.27 6.00 6.00 28.27 28.27 64,160 69,530 Average * Does not comply with specified strength Compressive Strength ~ Fracture Type Unbonded Cap Cone/Split 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. (KWILB) Page 6 of 8 Rone Engineering . Client: Transwestern Commercial Services 5001 Spring Valley Dallas, TX 75244 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freidrich, Ste 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 294684 Project No.: 0712786 Date of Service: 08/07/2007 Report Date: 09/06/2007 Project: Gateway Business Center Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perform required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Constructors & Associates Concrete Supplier: Redi Mix Plant: 135 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 5" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 .~. ,?T~:' r=:-'231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 23601524 Placement Date: 08/07/2007 Weather Conditions: Clear, warm Time Sampled: 02:25pm Batch time: 01: 17pm Temperature - Air: 910F Concrete: 930F Truck No: 1279 Ticket No: 13554092 Air Content: 3.3% Unit Weight (pcf): NA Overall Placement Location: Paving on northwest corner of building 1 Measured Slump (inches) 6.0 Sample Location: 60' west, 35' south from northwest building corner REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in') (Ibs) (psi) Type 7 1 08/14/2007 7 6.00 28.27 77,290 2,730 Unbonded Cap 7 2 09/04/2007 28 6.00 28.27 99,600 3,520 Shear 7 3 09/04/2007 28 6.00 28.27 106,680 3,770 Cone/Split Average 3,650 7 4 10/02/2007 56 LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (KW/LB) Page 7 of 8 Rone Engineering . Client: Transwestern Commercial 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.: 296989 Project No.: 0712786 Date of Service: 08/27/2007 Report Date: 09/06/2007 Project: Gateway Business Center Coppell, Texas Services: Obtain samples of fresh concrete at the placement locations, perfomn 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: LMC Plant: 3 Specification Requirements Strength: 3,600 psi @ 28 days Slump (in.): 4" maximum Air (%): 3% - 6% Test Method: ASTM C-172 ASTM C-31 (except 10.1.2) ASTM C-143 ...^,~.T~\{~ (' .'/'11 ASTM C-1064 ASTM C-138 ASTM C-39 Measured Slump (inches) 4.0 Mix Design I.D.: 1551 Placement Date: 08/27/2007 Weather Conditions: Partly cloudy, calm Time Sampled: 02:35pm Batch time: 01 :24pm Temperature - Air: 930F Concrete: 910F Truck No: 5023 Ticket No: 3235884 Air Content: 4.3% Unit Weight (pcf): NA Overall Placement Location: Inlet top, northwest corner of west parking lot, leave out area around storm drain, 100' north, 80' of (cont) Sample Location: Same as above REPORT OF TESTS Concrete Compressive Cylinder 6" x 12" Cylinder Maximum Compressive Marked Date Age Diameter Area Load Strength Fracture Set No. Tested (days) (in) (in2) (Ibs) (psi) Type 1 1 09/03/2007 7 6.00 28.27 98,500 3,480 Unbonded Cap 2 09/24/2007 28 3 09/24/2007 28 4 10/22/2007 56 Remarks: Cont: southeast corner of west parking lot 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 a~e for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (TMlLB) Page 1 of 2