^ 



V/ 



1 



i 



No.9 Rubber Stopper 



18"- |5/8" Aluminum Tubing 

 (Top Flush With Soil Surface] 



2"-l'/2" Plastic Sleeve To Join Tubing 

 (Heated To Install) 



No.8 Rubber Stopper 

 (With Hook For Removing) 



20' -I Vs" Aluminum Tubing 

 Bottom End Capped 



Figure 4, ACCESS TUBE DESIGN 



