Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          07-236-11-49  02-381604                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  45%          28%                             
02-LAS-395-30.7/56.7                    Federal Project:                                
                                     ACST-P395(215)                                     
                             PH-P395(215)                                               
                                                                                        
Progress payment No. 05            Payment period ending: 08-20-07                      
SIERRA NEVADA CONSTRUCTION                                                              
INC                                                                                     
P O BOX 50760                                                                           
SPARKS NV 89435                                                                         
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.      11,147,439.20    2,522,095.18                      
2.a. Extra Work                          56,339.50            0.00                      
  b. Adjustment Comp.                  -295,620.00     -295,620.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention       10,908,158.70    2,226,475.18                      
5. Mobilization                       2,443,616.79            0.00                      
6. Total Work Completed   13,351,775.49                                                 
7. Deductions                           -24,000.00       -7,000.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor           13,327,775.49    2,219,475.18                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                           2,219,475.18