Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          03-113-10-36  07-115654                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  50%         100%                             
07-LA-5743                    Federal Project:                                          
                                     NONE                                               
                                                                                        
                                                                                        
Progress payment No. 17            Payment period ending: 04-20-03                      
ACE ENGINEERING INC.                                                                    
1880 WRIGHT AVE                                                                         
LA VERNE CA 917505824                                                                   
                                                                                        
                                                                                        
Escrow No.  01838                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       1,891,498.28      168,327.70                      
2.a. Extra Work                         147,322.08            0.00                      
  b. Adjustment Comp.                                                                   
3. Materials on Hand                                                                    
4. Earned Subject to Retention        2,038,820.36      168,327.70                      
5. Mobilization                                                                         
6. Total Work Completed    2,038,820.36                                                 
7. Deductions                                                                           
8. a.Contract Retentions               -101,941.02       -8,416.39                      
   b. Unsatisfactory Prog.              -61,427.24       -8,416.38                      
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor            1,875,452.10      151,494.93                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow       101,940.00                                                  
12. Net Pymt. this Estimate                             151,494.93