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Interstitial Vacuum Monitoring <br /> Total Containment tanks arrive at the job site with a vacuum applied to the interstitial <br /> • , space. Using this gauge assembly, a simple test can be performed by the installer <br /> which results in pre-installation testing certification. In addition, after backfilling to <br /> • the top of the tank, a second vacuum monitoring test can be performed which <br /> qualifies as an installed precision test in accordance with U.S. EPA requirements for <br /> alternative protocols.This procedure can save hundreds of dollars over other testing <br /> methods. <br /> • v <br /> Versatile Leak Detection <br /> The monitoring column provided on each tank allows for a multitude of interstitial <br /> monitoring techniques including;stick gauging,continuous vacuum monitoring and <br /> electronic leak detection. <br /> n <br /> ' Standard Tank Fittings Accommodate Sump Installation <br /> - = - 4" Fittings come standard on all TO Tanks (see chart at left) <br /> -r Second ring provides easy and cost-effective means of <br /> mounting TO Sumps <br /> • Available in 2", 4" and 6" female NPT or BSPT sizes <br /> Factory Welded Polyethylene Tank Sumps <br /> u <br /> • Eliminates bolted joint and provides secondary containment for tank fittings <br /> • Sump base is welded and tested at factory prior to shipping <br /> Manway Assemblies For All Tanks <br /> Provides access into tank <br /> .�' Provides means of attaching sump base without interfering <br /> +`,f with manway access <br /> _ Available as an option on all TO tanks <br /> r Designates new product.product <br /> revision,or change in pricing. <br /> Page 12 - U.S. Price Manual <br />