Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          07-269-10-14  03-3555U4                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  45%          56%                             
03-ED-50-16.7/18.1                    Federal Project:                                  
                                     ACST-P050(110)                                     
                             PE-P050(110)                                               
                             BRLS-6203(14)                                              
Progress payment No. 18            Payment period ending: 09-20-07                      
MITCHELL ENGINEERING                                                                    
P O BOX 34367                                                                           
SAN FRANCISCO CA 94134                                                                  
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.      12,212,781.18      932,701.75                      
2.a. Extra Work                         329,956.41       13,714.28                      
  b. Adjustment Comp.                   366,067.28       98,804.28                      
3. Materials on Hand                    243,266.56      -62,327.73                      
4. Earned Subject to Retention       13,152,071.43      982,892.58                      
5. Mobilization                       3,325,000.00            0.00                      
6. Total Work Completed   16,233,804.87                                                 
7. Deductions                           -42,042.85       10,000.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor           16,435,028.58      992,892.58                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                             992,892.58