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Review Status: In Review

Review Details: TWPE 90% DESIGN REVIEW v.1

Plan Number - TW-PLAN-0526-0116
Review Name: TWPE 90% DESIGN REVIEW v.1
Review Status: In Review
Review Date Reviewer's Name Type of Review Description Status Comments
TWPE System Planning APPROVED Modeled pressure range is 77-93 psi with 54-inch isolated. Normal is 77-93 around the surrounding neighborhood from Bellevue to 5th Street along Columbus St. Negligible change.
Found isolation valve N-2234162 at Columbus/Lester. Unable to locate isolation valve at Columbus/Bellevue? Will have to isolate at 5th Street.
With a double block and bleed, we're going to be closed 2 valves to the north (and associated laterals) and 2 valves to the south. Model should have that full stretch OOS, as well as double blocks on laterals. Then review model for tank drain at Murphy and Valley View, 10 day model run, then extend trend if not stabilized.
If 10 day run doesn't work, use base run but extend time to 120 hours. System Planning modeled 10 day model run and it works. If outage lasts longer than 48hrs then Operations will have to take Valley View C-F and C-D OOS. Murphy reservoir drains from 35 ft to 27 ft. Looks ok.
Based on Geoworx, there will be four (4) affected customers whose meters come off the 54" TM.
The addresses are:
4301 E Lee St
1620 N Columbus
1632 N Columbus
1656 N Columbus
TWPE Civil Engineers (CE) PENDING ASSIGNMENT
TWPE Engineering Manager - Authorization PENDING ASSIGNMENT
TWPE Engineering Manager Oversight PENDING ASSIGNMENT
TWPE Senior Engineering Associates (SEA) PENDING ASSIGNMENT
TWPE Pipeline Protection REVIEW COMPLETED J.Suarez completed review 08.10.2026 and reassigning to Jose Pico