Dept. of Trans.       SEMI-FINAL   Serial No.  Contract No.                             
                                          06-339-16-03  01-462004                       
                PROGRESS PAYMENT VOUCHER  %complete:   %time:                           
Location:                                 100%         100%                             
01-HUM-96-0.0/5.0                    Federal Project:                                   
                                     NONE                                               
                                                                                        
                                                                                        
Progress payment No. 04            Payment period ending: 07-19-06                      
INTERNATIONAL SURFACING                                                                 
SYSTEMS                                                                                 
P O BOX 4770                                                                            
MODESTO CA 95352                                                                        
                                                                                        
Escrow No.  00000                                                                       
                                    Total Estimate   This Estimate                      
1. Contract Itms Without Mobil.         534,307.19            0.00                      
2.a. Extra Work                          35,347.09        2,435.83                      
  b. Adjustment Comp.                                                                   
3. Materials on Hand                                                                    
4. Earned Subject to Retention          569,654.28        2,435.83                      
5. Mobilization                                                                         
6. Total Work Completed      569,654.28                                                 
7. Deductions                            -1,000.00       10,000.00                      
8. a.Contract Retentions                -26,715.36            0.00                      
   b. Unsatisfactory Prog.                                                              
   c. Reduction after 95% Comp.          26,715.36            0.00                      
9. Total pay to Contractor              568,654.28       12,435.83                      
10. Reduction Amt to Escrow                                                             
11. Payment to Escrow             0.00                                                  
12. Net Pymt. this Estimate                              12,435.83