_External_ Bexford Subdivision (Fuquay-Varina Permit EC-2021-45) 1-12-2024 Notification

Baker, Caroline D
From: Jeffrey Taylor <[e-mail]>
Sent: Friday, January 12, 2024 8:36 AM
To: Denton, Bill; Summers, Kimberly M; Thomas, Zachary T
Cc: Nick Meagher; Brad Williford
Subject: [External] Bexford Subdivision (Fuquay-Varina Permit EC-2021-45) Notification
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
button located on your Outlook menu bar on the Home tab.
Hi Bill,
The purpose of this email is to notify you of the following sediment that discharged from the site at Bexford Subdivision
in the Fuquay-Varina Jurisdiction (COC NCC231386; Fuquay EC-2021-45) witnessed yesterday that impacted the
wetlands. Approximately 1.1 inches was recorded on site that fell in the rain event on Tuesday evening. The inspection
was delayed one day due to poor site conditions. Crews were on site Wednesday and Thursday making other smaller
repairs but were waiting until today to address this concern due to wet site conditions.
At the crossing above SSB 20, uphill perimeter slopes (which have been armored with rip rap to address water flow off
site) eroded due to stormwater flow coming from off site through a Kudzu field. This eroded the slope coming into the
site. The soil that was displaced was caught in the scour hole on the upper end of this road crossing over a swale area
before the wetland begin. Much of the other surface water has been diverted to the nearby basin with a diversion
ditch. Sediment travelled through the culvert pipe and overwhelmed the plunge pool and silt fence/outlet below
washing sediment into the wetland area. The outlet did not fail, but sediment did wash over/through it due to the high
velocity of water. I estimate 4-5 inches of sediment directly behind the silt fence at the deepest spot in a 30x8' area, and
a 60'x2-3' trail with pockets of sediment 2-3" deep leading back into the wetlands.
Crews will clean up sediment in the wetland areas below using low impact methods. They will remove soils to the
change in color. As waters subside, the crews will revisit the area and remove any sediment that may have been
underwater. The developer is working with the contractor and engineer on a solution to the area above this crossing
but if stored sediment is removed and a horseshoe filter berm is placed above the crossing culvert, it should address the
erosion keep sediment on site until stormdrain can be installed to handle the stormwater coming from off site that is
eroding the uphill perimeter slope.
Please let me know if you have any questions, further recommendations, need photos, or wish to meet on site.
Thank you,
Jeff Taylor
Managing Stormwater Compliance Consultant
Pollution Monitoring Services
3434 Edwards Mill Road, Suite 112-353
Raleigh, NC 27612
919.602.1297 (office)
919.608.8638 (cell)
www.pollutionmonitoring.net

yl
POLLUTION
MONITORING
ERViCE
NPpES InspacNans and Consulting