Potholing_Table_Updated_Stationing.xlsx

This file contains a potholing data table prepared by Otak in 2020 for the City of Hayward's 22nd Street and Hart Road Waterline and Sewer Rehab Projects. The potholing spreadsheet documents utility locations and depths along SW 22nd Street and SW Juniper Terrace, recording information for 29 identified utility crossings including water, sewer, gas, power, communications, and storm drain lines. The data captures utility type, pipe size, material composition, and depth to top of pipe (T.O.P.) measurements in inches, with station references matching the construction planset. Multiple entries indicate utilities that were not found (DNF) during the 2020 locate work, while others provide specific depth measurements ranging from 5.5 feet to over 60 inches. The spreadsheet serves as a reference document for the larger capital improvement projects involving installation of approximately 4,000 linear feet of water and sewer infrastructure along SW 22nd Street (CIP 4136) and 1,800 linear feet along SW Hart Road (CIP 4211), with potholing required for select areas during construction to verify existing utility locations and prevent conflicts.

The potholing data represents preliminary subsurface investigation completed prior to bid solicitation, providing contractors with critical information regarding existing utility infrastructure that must be navigated during construction. The documented utilities include cast iron, ductile iron, copper, and steel pipes along with conduit systems serving water distribution, sanitary sewer, storm drainage, gas, power, and communications. Several entries note challenges in locating specific utilities or describe utilities occupying broad swaths, indicating areas where contractors should exercise particular caution during excavation activities. The depth measurements and station-based location references enable contractors to plan construction sequencing and traffic control operations while accounting for the dense utility corridor environment characteristic of the residential, high-traffic corridor along SW 22nd Street.