Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          07-144-10-53  02-381604                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  11%           9%                             
02-LAS-395-30.7/56.7                    Federal Project:                                
                                     ACST-P395(215)                                     
                             PH-P395(215)                                               
                                                                                        
Progress payment No. 02            Payment period ending: 05-18-07                      
SIERRA NEVADA CONSTRUCTION                                                              
INC                                                                                     
P O BOX 50760                                                                           
SPARKS NV 89435                                                                         
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.       2,164,592.50    1,819,613.50                      
2.a. Extra Work                                                                         
  b. Adjustment Comp.                                                                   
3. Materials on Hand                          0.00      -34,245.86                      
4. Earned Subject to Retention        2,164,592.50    1,785,367.64                      
5. Mobilization                       1,286,114.10    1,286,114.10                      
6. Total Work Completed    3,450,706.60                                                 
7. Deductions                            -3,000.00       -3,000.00                      
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor            3,447,706.60    3,068,481.74                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                           3,068,481.74