20110844 Ver 1_Meeting Minutes_20080123

Draft Minutes for Hydraulic Design Review Meeting
??5 U-2211B
State Project 34783.1.1
SR 101 (Connelly Springs Road) From US 321A (Norwood Street) to
SR 11783 (Starcross Road)
Caldwell County, Division 11
A Hydraulic Design Review Meeting was held on Wednesday, January
23, 2008 in the Hydraulics Conference Room at the NCDOT Century
Center Complex, Raleigh.
Team Members: Andrew Nottingham-Hydraulics (Present)
Monte Matthews-USACE (Absent)
Marella Buncick-USFWS (Absent)
Marla Chambers-NCWRC (Present)
Amy Euliss-NCDWQ (Absent)
Brian Wrenn-NCDWQ (Absent)
Chris Militscher-EPA (Present)
Kathy Matthews-EPA (Present)
Donnie Brew- FHWA (Present)
Davis Harris-REU (Absent)
Gary Lovering-Roadway Design (Present)
Betsy Cox-Structures (Absent)
Charles Cox: PDEA (Absent)
Carla Dagnino: NEU (Present)
Trent Beaver: Division 11 (Present)
Participants: Doug Petrey-Structures
Michele James-PDEA
Erin Cheely-NEU
Jennifer Harrod-NEU
David Wainwright-NCDWQ
Troy Wilson-USFWS
David Bocker-Mulkey, Inc.
Joe Dudeck-Mulkey, Inc.
The meeting began at 11:00 a.m. with introductions initiated by Andrew Notthingham
(NCDOT Hydraulics). David Bocker (Mulkey, Inc.) proceeded with the review of the
project as follows:
General Items
• All waters within the project are Class `C' (suitable for aquatic life propagation and
survival, fishing, wildlife, secondary recreation, and agriculture).
• Project falls within the Catawba River Basin; but since the project is not on the main
stem of the Catawba River riparian buffer rules are not applicable.
• Grass Swale treatment will occur throughout the project in the median and in areas
where flat slopes can be maintained.
• Pre-formed scour holes will also be utilized as treatment measures where feasible.
• Proposed culverts will be buried 1 ft to provide for fish passage.
• Cross pipes in jurisdictional intermittent streams will be buried 1 ft culverts greater
than 48 inches and 20% of the pipe diameter for culvert less than 48 inches in
diameter.
Sheet 4
• No jurisdictional streams or wetlands; therefore, no impacts
Sheet 5
• Proposed design will tie into existing 42" Storm Drainage system that directly
discharges into Gunpowder Creek @ the 12'x8' RCBC under Norwood St. At that
point, most of this drainage basin is impervious, therefore widening of the existing
roads should not adversely impact the jurisdictional waters at the outlet of this
system.
Sheet 6
• Wetland impacts; total take is unavoidable due to roadway
alignment/intersection/interchange.
• Stream impacts - Upstream/Downstream of Culvert Extension @ -Y5- U.S. 321
through -Y4- Berkley St. as well as under Loop C & Ramp C.
• There will be several direct discharges points into the proposed culvert extension in
the interchange area.
• Several concerns from NCWRC about the added storm water from the interchange
added to culvert. Currently, the area is heavily wooded; the proposed interchange
will change to pavement & grass surfaces resulting in changes to the water quality of
the creek.
• The use of multiple baffles within the culvert and up-sizing culvert (7'x8') to
accommodate was discussed to provide energy dissipation within the culvert.
• Having one long culvert from loop "C" to "Y4" was agreed to be a viable option and
will be pursued during the design phase.
• Mulkey will investigate use of stormwater detention in loops prior to discharge into
the proposed culvert (Gunpowder Creek).
Sheet 7
• Stream impacts - Upstream and Downstream of existing culvert under -Y9- Starcross
Rd. culvert replacement necessary due to intersection improvements.
• Intermittent Stream Impacts - Upstream of existing 24" CMP, due to roadway
widening.
• Concern of stability at the outlet of the proposed 54" RCP was expressed, it was
explained that the pipe outlet will be located at the stream bed elevation. The current
24" CMP outlet is 3-4 feet above the creek bank. It was also explained that a head
ditch would be required on the upstream end of the proposed 54" RCP due to the
cross pipe layout and grade of the roadway in this location.
• NEU mentioned that they would further investigate whether or not this is a
jurisdictional stream.
Sheets 8, 9, & 10
• No jurisdictional streams or wetlands, therefore, no impacts.
Sheet 11
• Stream Impacts - Downstream of Culvert Extension @ -Y5- U.S. 321 and -Y4-
(Berkley St.) due to roadway realignment.
• No jurisdictional stream or wetlands; therefore, no impacts.