2.6 million gallons.

Such is the average daily load of sewage and storm water that gets piped down the middle of Glover Archbold National Park. Or so says the data for September 2016, according to DC Water and Sewer Authority officials.

FROM WHENCE: Shown in yellow is the approximate area collected by the sewer and storm water piping that runs through Glover Archbold National Park. Graphic Credit: Provided by DC Water and Sewer

The nearly 100-year-old pipe network has reached the end of its “maximum expected lifespan,” according to the agency. The system is cracked in places and intruded by tree roots, and the storm water runoff that surges through the park in heavy rains is eroding the anchoring ground. (See, Runoff: Glover Archbold National Park, September 9, 2016, The Hoe.org)

Agency officials say they do not have specific data about how the amount of flow through the pipe has changed over the years, but they are gathering the information.

The agency expects to submit the draft environmental assessment for the park sewer rehabilitation project to the National Park Service in December 2016. “DC Water continues to work closely with the NPS during the National Environmental Policy Act process,” agency officials stated in an e-mail to me.

At times, the scent of sewage can be detected while hiking in the park. Asked about monitoring for leaks and results, agency officials stated that the information is part of the data collection effort that is underway.

It was three years ago that the agency closed a public comment period on the scope of a rehabilitation project. Additional public meetings are expected.

How best to proceed with the work has been under review, with options including installing a pipe liner and rerouting the piping outside the park. Concerns have included how to get the job done most effectively without damaging the park.

© 2016 John A. Bray