Dept. of Trans.       FINAL   Serial No.  Contract No.                                  
                                          13-177-11-46  07-1294V4                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                 100%         100%                             
07-LA-60-11.8/23.3                    Federal Project:                                  
                                     ACNH-P060(130)                                     
                             CMLN-6207(40)                                              
                                                                                        
Progress payment No. 52            Payment period ending: 04-12-11                      
COOPER ENGINEERING INC                                                                  
281 CORPORATE TERRACE                                                                   
CORONA CA 92879                                                                         
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.     104,253,478.61            0.00                      
2.a. Extra Work                       3,381,259.39            0.00                      
  b. Adjustment Comp.                 1,483,277.95       81,999.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention      109,118,015.95       81,999.00                      
5. Mobilization                      10,050,000.00            0.00                      
6. Total Work Completed  119,168,015.95                                                 
7. Deductions                           -39,237.80            0.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor          119,128,778.15       81,999.00                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                              81,999.00