Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          06-234-14-22  07-195904                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  58%         100%                             
07-LA-405-29.5/32.2                    Federal Project:                                 
                                     ACNH-405-3(54)                                     
                             I-405-3(54)                                                
                                                                                        
Progress payment No. 16            Payment period ending: 08-20-06                      
DIABLO CONTRACTORS INC                                                                  
7 CROW CANYON COURT STE 100                                                             
SAN RAMON CA 94583                                                                      
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.      15,766,191.71      934,989.00                      
2.a. Extra Work                         418,630.31            0.00                      
  b. Adjustment Comp.                    70,303.50            0.00                      
3. Materials on Hand                    265,728.62      195,774.00                      
4. Earned Subject to Retention       16,520,854.14    1,130,763.00                      
5. Mobilization                       3,000,000.00      150,000.00                      
6. Total Work Completed   19,255,125.52                                                 
7. Deductions                           -23,200.00      -13,200.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor           19,497,654.14    1,267,563.00                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                           1,267,563.00