Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          08-238-08-02  02-381604                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  97%          90%                             
02-LAS-395-30.7/56.7                    Federal Project:                                
                                     ACST-P395(215)                                     
                             PH-P395(215)                                               
                                                                                        
Progress payment No. 18            Payment period ending: 08-20-08                      
SIERRA NEVADA CONSTRUCTION                                                              
INC                                                                                     
P O BOX 50760                                                                           
SPARKS NV 89435                                                                         
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.      26,534,129.66      124,840.00                      
2.a. Extra Work                         594,573.88       18,386.03                      
  b. Adjustment Comp.                 1,473,083.76      -53,432.58                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention       28,601,787.30       89,793.45                      
5. Mobilization                       2,572,228.20            0.00                      
6. Total Work Completed   31,174,015.50                                                 
7. Deductions                           -16,000.00            0.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor           31,158,015.50       89,793.45                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                              89,793.45