NCS000502_PreAudit_Trinity OM Plan_20210305

City of Trinity Good Housekeeping for Municipal Operations
Stormwater permit requires MS4s to prepare an inventory of municipal facilities and activities, and to develop a stormwater "Operations &
Maintenance Plan" for each facility/activity on the inventory
City of Trinity currently owns 2 properties located at 6701 NC Hwy 62 (City Annex) and 5978 NC Hwy 62 (City Hall). And it also owns 12.05 miles
of streets which includes its right-of-way. Each right-of-way contains different types of stormwater devices.
City of Trinity will dedicate time to inspect 10% of stormwater devices during winter months and clean/fix minor issues that come up. We will
also identify stormwater issues during rainstorms, write down the issues, and have minor issues fixed as soon as possible.
Costlier issues will need to be contracted out. These issues will be identified and prioritized to be fixed as soon as funds are available to do so.
BMP #1: Inventory of Facilities/Activities
Facility/Activity
Storm Sewer System impact
Discharge To
O&M Responsibilities (all include "signase")
Attachment
City Annex
Curb, Rain Garden
Unknown Stream
Mowing, trim, check inlet of rain garden to make
sure it is allowing flow, clean parking lot
City Hall
Catch Basins, Curb,
Unknown Stream
Mow, trim, clean parking lot, check & clean catch
basins
Streets
Street inspection, maintenance
of streets, maintenance of
stormwater devices
Uwharrie River, Little
Uwharrie River, and
Unknown Streams
sweeping, clean stormwater devices
SW conveyances
pipes, swales, ditches
Uwharrie River, Little
Uwharrie River, and
Unknown Streams
cleaning

BMP#2: O&M Actions (Detail)
Attachment #1: City Annex Buildine & City Hall
(Contact: Scottie Cooper, Public Works Supervisor)
Responsibility
When and
Actions
Additional
How Often?
Considerations
0
Fluids Management
Daily
0 Work inside.
Applies to oil, coolant,
o Minimize use of solvents.
solvents. Fuel is separate,
0 Eliminate leaks in vehicles and equipment, use drip pans temporarily.
below.
Clean Catch Basin
Each winter
o Haul to landfill.
Check after each major
storm (> 3")
Wash Water
Weekly
o Wash on grassy area or take to commercial car wash most of the time. Will need to look at how to collect and
dispose of vehicle wash water when chemical additives, solvents or degreasers are used. Allow no wash
water to enter storm sewer or stream.
Road Salt and Grit
Per Snow event;
o Keep rain off stored salt
Once or twice
0 Haul and store salt in dry weather
yearly
o Sweep up spills around storage/loading area

Attachment #2: Streets
(Contact: Scottie Cooper, Public Works Supervisor; Marc Allred, Stormwater Administrator)
Signage (for each
activity below)
Daily
Storm Inlets, Ditches,
Inspect after each
o Haul clean -out materials to landfill
Swales, Driveway Tiles,
heavy rain.
o Maintain grates on inlets.
Stormwater Pipes
Clean inlets in fall,
additionally if
clogged