Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          08-056-10-16  05-446014                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  67%          58%                             
05-SB-101-84.1/90.9                    Federal Project:                                 
                                     ACNH-Q101(28)                                      
                                                                                        
                                                                                        
Progress payment No. 20            Payment period ending: 02-20-08                      
DIABLO CONTRACTORS INC                                                                  
7 CROW CANYON COURT SUITE 100                                                           
SAN RAMON CA 94583                                                                      
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.      17,044,568.88      529,264.88                      
2.a. Extra Work                         199,890.97         -897.79                      
  b. Adjustment Comp.                  -145,032.82        5,069.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention       17,099,427.03      533,436.09                      
5. Mobilization                       2,900,000.00            0.00                      
6. Total Work Completed   19,999,427.03                                                 
7. Deductions                          -144,998.72     -132,318.72                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor           19,854,428.31      401,117.37                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                             401,117.37