Dept. of Trans.       FINAL   Serial No.  Contract No.                                  
                                          08-178-12-55  04-1A0004                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                 100%         100%                             
04-SON-12-23.1/34.3                    Federal Project:                                 
                                     ACST-P012(99)                                      
                             PHG-P012(99)                                               
                                                                                        
Progress payment No. 04            Payment period ending: 04-21-08                      
LINEAR OPTIONS INC                                                                      
1 KELLY CT                                                                              
MENLO PARK CA 94025                                                                     
                                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.         249,347.50            0.00                      
2.a. Extra Work                          27,105.67       27,105.67                      
  b. Adjustment Comp.                                                                   
3. Materials on Hand                                                                    
4. Earned Subject to Retention          276,453.17       27,105.67                      
5. Mobilization                          65,000.00            0.00                      
6. Total Work Completed      341,453.17                                                 
7. Deductions                                                                           
8. a.Contract Retentions                                                                
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.                                                         
9. Total pay to Contractor              341,453.17       27,105.67                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                              27,105.67