Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          05-050-11-29  04-226124                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  98%         100%                             
04-MRN-101-8.4/9.7                    Federal Project:                                  
                                     ACNH-P101(992)                                     
                             CML-6204(42)                                               
                                                                                        
Progress payment No. 30            Payment period ending: 02-20-05                      
DIABLO CONTRACTORS INC                                                                  
7 CROW CANYON COURT, STE 100                                                            
SAN RAMON, CA 94583                                                                     
                                                                                        
                                                                                        
Escrow No.  01963                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       7,312,097.68       25,296.00                      
2.a. Extra Work                       1,413,586.93      -18,322.47                      
  b. Adjustment Comp.                   387,227.00            0.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention        9,112,911.61        6,973.53                      
5. Mobilization                         900,000.00            0.00                      
6. Total Work Completed   10,012,911.61                                                 
7. Deductions                           -10,000.00            0.00                      
8. a.Contract Retentions               -455,645.58         -348.68                      
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor            9,547,266.03        6,624.85                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow       455,640.00                                                  
12. Net Pymt. this Estimate                               6,624.85