This page uses extracted PDF text. Text can misread numbers, dates or table columns. Check the PDF before quoting or interpreting it. Redacted areas remain redacted.
13
City of Newport News
2024-2029 MS4 Program Plan
MS4 system, a schedule of inspections and procedures for inspecting points of connection or
outfalls, whichever occurs first, to the City’s MS4. (ONGOING)
• Each annual report shall report on implementation of the inspection schedule and include a list
of the facilities and/or facility outfalls or points of connection to the City’s MS4 inspected during
the reporting period. (ONGOING)
• Each annual report shall include a list of referrals to DEQ including a document detailing any
coordination activities with DEQ. (ONGOING)
h) Stormwater Infrastructure Management
The City is required to implement programs to maintain the City’s MS4 infrastructure and to update
the accuracy and inventory of the storm sewer system. The MS4 map and the associated inventory
of MS4 outfalls, infrastructure, and SWMFs are continually updated using ArcGIS software.
Public SWMFs are inspected by Department of Engineering Environmental Services Division staff
according to the schedule detailed below, which is dependent on the most recent inspection status,
and are tracked in an internal Engineering database. Inspection reports of deficiencies are provided
to the Department of Public Works Stormwater Division or other department responsible for
maintenance to ensure facilities function as designed.
➢ Inspection Status = Pass (no maintenance required, or only routine maintenance required;
examples: mowing, removal of small amounts of sediment, removal of vegetation overgrowth,
removal of moderate trash or yard debris, replacing dead/diseased landscaping, control of
algae/invasive plants)
o SWMF will be inspected in three years
➢ Inspection Status = Marginal (non-routine maintenance required; examples: clogged/broken
pipes, missing or broken structure parts, cracked concrete structures, erosion of
inlet/outlet/embankments, sinkhole formation or subsidence within facility footprint, regrading
or dredging required, or landscaping in need of complete refurbishment)
o SWMF will be inspected in two years
➢ Inspection Status = Fail (major maintenance required such as rehabilitation or rebuild)
o SWMF will be inspected after rehabilitation/rebuild project is completed
The Department of Public Works implements its storm sewer system inspection program in
accordance with its Stormwater Operations Infrastructure Maintenance Plan. At least 15% of the
storm sewer system is inspected annually and 80% is inspected during the permit term; maintenance
is performed as needed. Metrics include the number of stormwater structures (manholes, inlets, and
end sections) and the linear feet of storm sewer conveyance (open conveyance/ditches, and gravity
mains/pipes) that are inspected and maintained. Inspections and maintenance activities are tracked
in Cityworks software and are reported in the annual report to DEQ.
The City is required to implement a program to ensure proper maintenance of private SWMFs that
discharge into the MS4. Private SWMFs with a recorded maintenance agreement are inspected at
least once every five years by Engineering staff, and maintenance is required as needed, in accordance
with the Stormwater Management Facility Post Construction Inspection SOP. Inspection records are
maintained in an internal Engineering database to facilitate annual reporting. For private SWMFsJump to an indexed page (19 of 19)