20211588 Ver 1_More Information Received_20220223 (2)

ij
PAST DJSIGN GUM, PA
Engineering I Consulting
MEMORANDUM
TO: Ian McMillan
Sage Ecological Services, Inc.
919-608-3156
[e-mail]
FROM: Violet Cartee
Pabst Design Group, PA
107 Fayetteville Rd, Suite 200
Raleigh, NC 27601
SUBJECT: 500 Rawls Towns
PDG Project # 522-20
Environmental Impact Maps —Comment Response
DATE: February 23rd, 2022
To whom it may concern,
107 Fayetteville Rd, Suite 200
Raleigh, NC 27601
Office: 919.848.4399
Fax: [phone]
In reply to comments received on February 18thth, 2022, Pabst Design Group, PA, offers the following
responses as described below. Should you have any questions, please do not hesitate to contact our
office. Thank you for your cooperation and assistance with this project.

• resubmitted plans need to be less busy with irrelevant plan layers turned off
PDG Response: Multiple layers turned off and transparency adjusted to make more
legible.
• need plans with narrative for proposed cast -in -place retaining wall
PDG Response: The retaining walls shown are to be installed as cast -in -place or gravity -
based walls with no gridding. As no gridding is to be placed, disturbance to the riparian
buffer shall remain limited to only what is shown on the plan set.
• need updated impact tables
PDG Response: Impact tables adjusted to reflect impacts.
• need culvert profiles
PDG Response: Impact tables adjusted to reflect impacts.
• need dissipater pads at end of culverts stating details and placement at or below grad to
be considered a permanent no loss impact
PDG Response: No on -site culverts are proposed. Both stream impacts 1A and 1B occur
at the top of stream and no through drainage occurs at these locations. The
development activities performed at these locations will effectively reposition the top of
stream, and therefore no culverts, headwalls, or pump around measures are necessary.
All rip rap dissipator pads shown are part of the proposed stormwater system.
• will there be headwalls with culvert installation? If yes, need headwall details
PDG Response: No culverts or headwalls proposed- see above response.
• need pump around plan for culvert installation
PDG Response: No culverts or pump around measures proposed- see above response.
• need to show connection with SCM and stormwater pipes
PDG Response: The site SCM, a level spreader with a vegetative filter strip, has been
made visible on the plan set.