I need to test a sewer force main, PVC SDR 26 pipe, approx. 10,000' length. Pump station @ approx. EL.524.00, high point approx. El. 621.00, outlet mh approx. EL. 320.00. There is an air release @ high point, no valves installed at any point along line. Spec. test to be 100 PSI. Any thoughts on...