Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          04-117-07-54  08-334834                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  94%          95%                             
08-RIV-91-20.3/21.6                    Federal Project:                                 
08-RIV-60-11.5/12.1                                     ACNH-X065(75)                   
                                                                                        
                                                                                        
Progress payment No. 18            Payment period ending: 04-20-04                      
SEMA CONSTRUCTION INC                                                                   
2 SOUTH POINTE DRIVE STE 295                                                            
LAKE FOREST CA 92630                                                                    
                                                                                        
                                                                                        
Escrow No.  02048                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.      13,678,244.25       68,501.63                      
2.a. Extra Work                         659,663.51        4,399.84                      
  b. Adjustment Comp.                   273,291.69            0.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention       14,611,199.45       72,901.47                      
5. Mobilization                         140,000.00            0.00                      
6. Total Work Completed   14,751,199.45                                                 
7. Deductions                          -161,614.54       -6,873.00                      
8. a.Contract Retentions               -730,559.97       -3,645.07                      
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor           13,859,024.94       62,383.40                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow       730,550.00                                                  
12. Net Pymt. this Estimate                              62,383.40