From a project manager’s email about Phase 1C.2 stormwater work:

The 15-inch and 27-inch gravity sanitary sewer mains that will be relocated from under the Cape Henry Ditch to underneath Cape Henry Drive will remain gravity systems (not force mains). These mains drain down west all the way down to the Public Utilities Pump Station at Lynnhaven Colony Park.

We will be replacing the Sanitary Gravity Mains from Ebb Tide Road to Starfish Road, quite a long stretch, about 1,488 Linear Feet. The plan is to upgrade the 15-inch to 18-inch currently, but maintain the 27-inch size.

Note: Phase 1C.2 is in red.