Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          02-168-12-13  04-013084                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  89%         100%                             
04-SOL-680-1.5/ .0                    Federal Project:                                  
                                     NONE                                               
                                                                                        
                                                                                        
Progress payment No. 19            Payment period ending: 06-20-02                      
DIABLO CONTRACTORS INC                                                                  
7 CROW CANYON COURT, STE 100                                                            
SAN RAMON, CA 94583                                                                     
                                                                                        
                                                                                        
Escrow No.  01667                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       5,606,689.90      222,182.60                      
2.a. Extra Work                          28,041.40            0.00                      
  b. Adjustment Comp.                    20,805.35            0.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention        5,655,536.65      222,182.60                      
5. Mobilization                         700,000.00            0.00                      
6. Total Work Completed    6,355,536.65                                                 
7. Deductions                           -32,010.66       51,094.21                      
8. a.Contract Retentions               -282,776.83      -11,109.13                      
   b. Unsatisfactory Prog.              -39,890.69      -11,109.13                      
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor            6,000,858.47      251,058.55                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow       282,770.00                                                  
12. Net Pymt. this Estimate                             251,058.55