Dept. of Trans.       FINAL   Serial No.  Contract No.                                  
                                          08-175-08-04  09-307904                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                 100%         100%                             
09-MNO-5712                    Federal Project:                                         
                                     NONE                                               
                                                                                        
                                                                                        
Progress payment No. 13            Payment period ending: 05-13-08                      
DEN BOER ENGINEERING AND                                                                
CONSTRUCTION INC                                                                        
72-152 NORTHSHORE ST                                                                    
THOUSAND PALMS, CA  92276                                                               
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       1,097,000.00            0.00                      
2.a. Extra Work                          35,356.81            0.00                      
  b. Adjustment Comp.                      -413.25            0.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention        1,131,943.56            0.00                      
5. Mobilization                                                                         
6. Total Work Completed    1,131,943.56                                                 
7. Deductions                                                                           
8. a.Contract Retentions                -56,069.12            0.00                      
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.          56,069.12            0.00                      
9. Total pay to Contractor            1,131,943.56            0.00                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                                   0.00