Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          08-086-09-28  08-456614                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  65%          47%                             
08-RIV-91-R0.6/R1.2                    Federal Project:                                 
                                     HP21-6054(49)                                      
                             LN-6054(49)                                                
                                                                                        
Progress payment No. 13            Payment period ending: 03-20-08                      
SEMA CONSTRUCTION INC                                                                   
6 ORCHARD STE 150                                                                       
LAKE FOREST CA 92630                                                                    
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       8,186,589.29      789,604.40                      
2.a. Extra Work                          89,481.82       13,890.19                      
  b. Adjustment Comp.                    -7,390.17        3,046.73                      
3. Materials on Hand                    172,139.54       16,930.80                      
4. Earned Subject to Retention        8,440,820.48      823,472.12                      
5. Mobilization                         560,125.00            0.00                      
6. Total Work Completed    8,828,805.94                                                 
7. Deductions                            -5,000.00            0.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor            8,995,945.48      823,472.12                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                             823,472.12