Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          08-057-12-48  08-456614                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  59%          43%                             
08-RIV-91-R0.6/R1.2                    Federal Project:                                 
                                     HP21-6054(49)                                      
                             LN-6054(49)                                                
                                                                                        
Progress payment No. 12            Payment period ending: 02-20-08                      
SEMA CONSTRUCTION INC                                                                   
6 ORCHARD STE 150                                                                       
LAKE FOREST CA 92630                                                                    
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       7,396,984.89      412,256.86                      
2.a. Extra Work                          75,591.63       20,450.91                      
  b. Adjustment Comp.                   -10,436.90        1,826.52                      
3. Materials on Hand                    155,208.74       -8,664.92                      
4. Earned Subject to Retention        7,617,348.36      425,869.37                      
5. Mobilization                         560,125.00            0.00                      
6. Total Work Completed    8,022,264.62                                                 
7. Deductions                            -5,000.00            0.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor            8,172,473.36      425,869.37                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                             425,869.37