Dept. of Trans.       PROGRESS   Serial No.  Contract No.                               
                                          07-082-09-05  03-2E2504                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                  94%         100%                             
03-NEV-49-2.1/R13.2                    Federal Project:                                 
                                     NONE                                               
                                                                                        
                                                                                        
Progress payment No. 04            Payment period ending: 03-20-07                      
LINEAR OPTIONS INC                                                                      
1 KELLY CT                                                                              
MENLO PARK CA 94025                                                                     
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.         310,347.96        5,585.36                      
2.a. Extra Work                                                                         
  b. Adjustment Comp.                   143,128.00       28,128.00                      
3. Materials on Hand                                                                    
4. Earned Subject to Retention          453,475.96       33,713.36                      
5. Mobilization                                                                         
6. Total Work Completed      453,475.96                                                 
7. Deductions                            -5,000.00            0.00                      
8. a.Contract Retentions                -22,673.80       -1,685.67                      
   b. Unsatisfactory Prog.               -1,685.67       -1,685.67                      
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor              424,116.49       30,342.02                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                              30,342.02