The existing manhole B-9 is currently located in between addresses 530 and 528 Webb Blvd within the center of Webb Blvd. Existing manhole B-9 is 4’ in diameter and from the invert to the rim elevation is 62” deep; this manhole is to be excavated, removed, disposed of, and a new manhole will be installed approximately 170’ lineal feet to the West of removed manhole. See figure 1. The new manhole shall be 4’ in diameter and from the invert to the rim elevation shall be 40.6” deep. See figure 5. This manhole shall be vacuum tested according to ASTM C1244; all testing shall be completed by a third party. The City of Havelock shall receive all testing results before the completion of the project. The new manhole shall be pre-cored to fit one 8” pipe boot and 8” PVC SRD 35 Sanitary Sewer Line. The second opening shall be core drilled onsite to fit one 4” pipe boot and 4” PVC service line. The manhole channeling shall be from the center of the floor of the manhole at the invert elevation to the 8” PVC SDR 35 Sanitary Sewer Line...
