Dept. of Trans.       SEMI-FINAL   Serial No.  Contract No.                             
                                          08-220-15-17  11-267504                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                 100%         100%                             
11-IMP-186-0.0/0.4                    Federal Project:                                  
                                     HPD-P186(3)                                        
                                                                                        
                                                                                        
Progress payment No. 06            Payment period ending: 04-22-08                      
A P ENGINEERING CORPORATION                                                             
1271 COLUMBIA AVE SUITE 10                                                              
RIVERSIDE CA 92507                                                                      
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.         485,766.80            0.00                      
2.a. Extra Work                           9,005.23        9,005.23                      
  b. Adjustment Comp.                     3,651.16        3,651.16                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention          498,423.19       12,656.39                      
5. Mobilization                          40,008.00            0.00                      
6. Total Work Completed      538,431.19                                                 
7. Deductions                           -89,361.99        2,159.13                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor              449,069.20       14,815.52                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                              14,815.52