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Duke Lesley-LR070911 (2) Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador !:low, Dallas, TX 75247 7701 W Little York, 5te 600, Houston, TX 77040 4421 Freldrlch, 5te 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 295024 Project No.: 0612510 Date of Service: 08/09/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure 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: Concrete Supplier: Lacy Plant: On site Specification Requirements Strf'ngth: 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design I.D.: 5194 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 07:15am Temperature - Air: 790F Truck No: NA Air Content: 3.8% Overall Placement Location: Paving for Dividend Street, Station 0+00 to 19+00, eastbound lane Measured Slump (inches) 1.0 Batch time: 07:05am Concrete: .l60F Ticket No: NA Unit Weight (pet): NA Sample Location: Station 1 +25 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 83,610 2,960 Unbonded Cap 1 2 09/06/2007 28 6.00 28.27 104,930 3,710 Shear 1 3 09/06/2007 28 6.00 28.27 102,360 3,620 Cone/Split Average 3,670 1 4 08/14/2007 5 6.00 28.27 75,950 2,690 Unbonded Cap LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (compositIon, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over whIch we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except In full without the written approval of Rone Engineering Services. Ltd. (LBILB) Page 1 of 9 Rone Engineering fIJ 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 Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 Report of Concrete Compressive Strength Test Report No.: 295024 Project No.: 0612510 Date of Service: 08/09/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure 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: Concrete Supplier: Lacy Plant: On site Specification Requirements Strength: 3,601 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design 1.0.: 5194 Placement Date: 08109/2007 Weather Conditions: Clear Time Sampled: 08:10am TemperatLire - Air: 840F Truck No: NA Air Content: 3.6% Overall Placement Location: Paving for Dividend Street, Station 0+00 to 19+00, eastbound lane Batch time: 08:00am Concrete: 800F Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 0.75 Sample Location: Station 2+50 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 08/16/2007 7 6.00 28.27 88,620 3,130 Unbonded Cap 2 2 09/06/2007 28 6.00 28.27 109,910 3,890 Shear 2 3 09/06/2007 28 6.00 28.27 112.460 3,980 Cone/Shear Average 3,930 2 4 08/14/2007 5 6.00 28.27 84,020 2,970 Unbonded Cap LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation In quality (composition, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (LBILB) Page 2 of 9 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 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.: 295024 Project No.: 0612510 Date of Service: 08/09/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure Services: Obtain samples offresh 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: Concrete Supplier: Lacy Plant: On site 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 ASTM C-231 . ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design I.D.: 5194 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 08:45am Temperature - Air: 850F Truck No: NA Air Content: 3.2% Overall Placement Location: Paving for Dividend Street, Station 0+00 to 19+00, eastbound lane Measured Slump (inches) 0.25 Batch time: 08:40am Concrete: 840F Ticket No: NA Unit Weight (pcf): NA Sample Location: Station 3+75 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 90,760 3,210 Unbonded Cap 3 2 09/06/2007 28 6.00 28.27 126,150 4,460 Cone/Split 3 3 09/06/2007 28 6.00 28.27 110,010 3,890 Cone/Split Average 4,180 3 4 08/14/2007 5 6.00 28.27 81,080 2,870 Unbonded Cap L1MffA T10NS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsJblllty for varlallon in quality (oomposlUon, 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 wUhoutthe written approval of Rone Engineering Services, Ltd. (LB/LB) Page 3 of 9 Rone Engineering .. Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 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.: 295024 Project No.: 0612510 Date of Service: 08/09/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure Services: Obtain samples offresh concrete at the placement locations, perfonn required testing, cast compressive strength samples and bring samples back to the laboratory for curing and testing in accordance with applicable standards. Contractor: Concrete Supplier: Lacy Plant: On site 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 5194 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 09:15am Tempr'rature - Air: 880F Truck No: NA Air Content: 3.5% Overall Placement Location: Paving for Dividend Street, Station 0+00 to 19+00, eastbound lane Measured Slump (inches) 0.75 Batch time: 09: 1 Oam Concrete: 870F Ticket No: NA Unit Weight (pet): NA Sample Location: Station 5+80 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) (inO) (Ibs) (psi) Type 4 1 08/16/2007 7 6.00 28.27 102,510 3,630 Unbonded Cap 4 2 09/06/2007 28 6.00 28.27 122,190 4,320 Cone/Shear 4 3 09/06/2007 28 6.00 28.27 124,850 4,420 Cone/Split Average 4,370 4 4 08/14/2007 5 6.00 28.27 88,340 3,120 Unbonded Cap LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variation in quality (composlUon, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reporls 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. (LBlLB) Page 4 of 9 Rone Eng.ineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W L1We 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.: 295024 Project No.: 0612510 Date of Service: 08/09/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure 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: Concrete Supplier: Lacy Plant: On site 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design I.D.: 5194 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 1 0:45am Temperature - Air: 8f'oF Truck No: NA Air Content: 3.8% Overall Placement Location: Paving for Dividend Street, Station 0+00 to 19+00, eastbound lane Measured Slump (inches) 0.75 Batch time: 1 0:40am Concrete: 920F Ticket No: NA Unit Weight (pcf): NA Sample Location: Station 9+00 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 87,900 3,110 Unbonded Cap 5 2 09/06/2007 28 6.00 28.27 110,130 3,900 Cone/Split 5 3 09/06/2007 28 6.00 28.27 102,460 3,620 Cone/Shear Average 3,760 5 4 08/14/2007 5 6.00 28.27 80,630 2,850 Unbonded Cap UMITATIONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for variaUon In quality (eomposIUon, appearance, etc.) or any other feature of similar subject matter provided by persons or condiUons over which we have no control. Our letters and reports are for the exclusive use of the enents to whom they are addressed and shall not be reproduced except In full without the written approval of Rane Engineering Services, Ltd. (LB/LB) Page 5 of 9 Rone Engineering .. Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 76247 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.: 295024 Project No.: 0612510 Date of Service: 08/09/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure 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: Concrete Supplier: Lacy Plant: On site 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design I.D.: 5194 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 12:00pm Temperature - Air: 930F Truck No: NA Air Content: 4.3% Overall Placement Location: Paving for Dividend Street, Station 0+00 to 19+00, eastbound lane Measured Slump (inches) 1.0 Batch time: 11 :50am Concre ':e: 950F Ticket No: NA Unit Weight (pcf): NA Sample Location: Station 11 +85 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) (lnl) (Ibs) (psi) Type 6 1 08/16/2007 7 6.00 28.27 82,370 2,910 Unbonded Cap 6 2 09/06/2007 28 6.00 28.27 99,500 3,520 Cone/Split 6 3 09/06/2007 28 6.00 28.27 104,410 3,690 Cone/Shear Average 3,610 6 4 08/14/2007 5 6.00 28.27 80,320 2,840 Unbonded Cap LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for tesllng. We assume no responsibility for variation in quality (composillon, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except In full without the written approval of Rone Engineering Services, Ltd. (LB/LB) Page 6 of 9 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 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.: 295024 Project No.: 0612510 Date of Service: 08/09/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure 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: Concrete Supplier: Lacy Plant: On site 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Mix Design 1.0.: 5194 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 12:50pm Temperature - Air: 930F Truck No: NA Air Content: 4.7% Overall Placement Location: Paving for Dividend Street, Station 0+00 to 19+00, eastbound lane Measured Slump (inches) 1.25 Batch time: 12:40pm Concrete: 940F Ticket No: NA Unit Weight (pet): NA Sample Location: Station 13+50 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 08/1612007 7 6.00 28.27 55,510 1,960 Unbonded Cap 7 2 09/06/2007 28 6.00 28.27 81,450 2,880 Cone/Split 7 3 09/06/2007 28 6.00 28.27 85,680 3,030 Cone/Split Average 2,960 * 7 4 08/14/2007 5 6.00 28.27 59,240 2,100 nUnbonded Cap * Does not comply with specified strength L1MITA TlONS: The test results presented herein were prepared based upon the specific samples provided for testing. We assume no responsibility for varlatJon In quality (composiUon, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone engineering Services, ltd. (LB/LB) Page 7 of 9 Rone Engineering " Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W L1We York, Ste 600, Houston, TX 77040 4421 Freldrlch, 8te 195, Austin, TX 78744 Corporate Phone: (214) 630-9745 Report of Concrete Compressive Strength Test Report No.: 295024 Project No.: 0612510 Date of Service: 08/09/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure 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: Concrete Supplier: Lacy Plant: On site 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 5194 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 01 :40pm Temperature - Air: 960F Truck No: NA Air Content: 4.2% Overall Placement Location: Paving for Dividend Street, Station 0+00 to 19+00, eastbound lane Measured Slump (inches) 1.0 Batch time: 01 :35pm Concrete: 960F Ticket No: NA Unit Weight (pet): NA Sample Location: Station 15+25 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 8 1 08/16/2007 7 6.00 28.27 76,380 2,700 Unbonded Cap 8 2 09/06/2007 28 6.00 28.27 94,400 3,340 Cone/Split 8 3 09/06/2007 28 6.00 28.27 95,880 3,390 Shear Average 3,360 .. 8 4 08/14/2007 5 6.00 28.27 73,520 2,600 Unbonded Cap .. Does not comply with specified strength LIMITATIONS: The test results presented herein were prepared based upon the specific samples provided for tesllng. We assume no responsibility for variation In quality (oomposillon, appearance, etc.) or any other feature of similar subject matter provided by persons or conditions over which we have no control. Our letters and reports are for the exclusive use of the clients to whom they are addressed and shall not be reproduced except in full without the written approval of Rone Engineering Services, Ltd. (LB/LB) Page 8 of 9 Rone Engineering .. Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 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.: 295024 Project No.: 0612510 Date of Service: 08/09/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure 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: Concrete Supplier: Lacy Plant: On site 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 PROJECT DATA Mix Design 1.0.: 5194 Placement Date: 08/09/2007 Weather Conditions: Clear Time Sampled: 02:10pm Temperature - Air: 960F Truck No: NA Air Content: 4.1 % Overall Placement Location: Paving for Dividend Street, Station 0+00 to 19+00, eastbound lane Measured Slump (inches) 1.25 Batch time: 02:00pm Concrete: 1000F Ticket No: NA Unit Weight (pcf): NA Sample Location: Station 16+50 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 9 1 08/16/2007 7 6.00 28.27 84,670 2,990 Unbonded Cap 9 2 09/06/2007 28 6.00 28.27 106,330 3,760 Cone/Split 9 3 09/06/2007 28 6.00 28.27 101,820 3,600 Cone/Split Average 3,680 9 4 08/14/2007 5 6.00 28.27 85,820 3,040 Un bonded Cap Finished: 03:45pm Rone Engmeermg ,azk Started: 06:00am Technician: Ryan Rawlinson Report Distribution: Orlg: Duke Construction, LP (Dallas, TX) Attn: Mr. Alex Bennett PE (1-ec copy) 1-cc City of Coppel! Attn: Mr. Larry Davis 1-ec Lacy Construction Attn: Mr. Kevin Briles 1-cc City of Coppell Attn: Mr. Lee Stone ~ 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. (LBILB) Page 9 of 9 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W UttJe York, Ste 600, Houston, TX 77040 4421 Freldrlch, Ste 195, Austin, TX 78744 Corporate Phone: (2141 630.9745 Report of Concrete Compressive Strength Test Report No.: 295294 Project No.: 0612510 Date of Service: 08/11/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure 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: Concrete Supplier: Lacey Plant: On site 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Batch time: 06:55am Concrete: 850F Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 3.0 Mix Design 1.0.: 5194 Placement Date: 08/11/2007 Weather Conditions: Clear Time Sampled: 07:00am Temperature - Air: 830F Truck No: NA Air Content: 3.9% Overall Placement Location: Paving, median and turn lanes, Beltline Rd. into project, 300' north, 15' west from south end (cont) Sample Location: 280' north, 13' west from south end turn lane 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 08/18/2007 7 6.00 28.27 60,130 2,130 Unbonded Cap 1 2 09/08/2007 28 6.00 28.27 78,060 2,760 Cone/Split 1 3 09/08/2007 28 6.00 28.27 69,520 2,460 Cone/Split Average 2,610 it 4 08/15/2007 4 6.00 28.27 52,870 1,870 Unbonded Cap * Does not comply with specified strength Remarks: Cant: turn lane paving for Dividend S1. Station 49+00 to 47+50 LIMITATIONS: The test resulls 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 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 wrillen approval of Rone Engineering Services, Ltd. (OMflS) Page 1 of 2 Rone Engineering . Client: Duke Construction, LP 14241 Dallas Pkwy, Ste 1000 Dallas, TX 75254-2936 8908 Ambassador Row, Dallas, TX 75247 7701 W Little York, Ste 600, Houston, TX 77040 4421 Freldrlch, Ste 195, Austin, TX 78744 Corporate Phone: (2141630..9745 Report of Concrete Compressive Strength Test Report No.: 295294 Project No.: 0612510 Date of Service: 08/11/2007 Report Date: 09/11/2007 Project: Lesley Infrastructure 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: Concrete Supplier: Lacey Plant: On site 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 ASTM C-231 ASTM C-1064 ASTM C-138 ASTM C-39 Batch time: 1 0:40am Concrete: 980F Ticket No: NA Unit Weight (pet): NA Measured Slump (inches) 3.75 Mix Design 1.0.: 5194 Placement Date: 08/11/2007 Weather Conditions: Clear Time Sampled: . .1 0:45am Temperature - Air: 910F Truck No: NA Air Content: 4.4% Overall Placement Location: Paving, median and turn lanes, Beltline Rd. into project, 300' north, 15' west from south end (cant) Sample Location: 120' north, 7' west from south end turn lane 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 08/18/2007 7 6.00 28.27 75,670 2,680 Unbonded Cap 2 2 HOLD Comments: Destroyed in Field 2 3 09/08/2007 28 6.00 28.27 83,240 2,940 Cone/Split 2 4 08/15/2007 4 6.00 28.27 65,350 2,310 Unbonded Cap Finished: 01 :45am R E. . ~~ Started: 05:15am Technician: Ryan Rawlinson Report Distribution: Orig: Duke Construction, LP (Dallas, TX) Attn: Mr. Alex Bennett PE (1-ec copy) 1-cc City of Coppell Attn: Mr. Larry Davis 1-ec Lacy Construction Attn: Mr. Kevin Briles 1-cc City of Coppell Attn: Mr. Lee Stone ~ K. Scott Watson, AET Project Manager LIMITATIONS: The test resulls 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 lelters 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. (DMlLB) Page 2 of 2