20080468 Ver 1_More Info Received_20080508

S&ME
May 2, 2008
NCDENR Division of Water Quality
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Attention: Mr. Ian McMillan
Celebrating 35 Years
1973.2008
ti
MAY 8 2008
OEw - WATER QUAUV
VTNDS AND STORMWATER
Reference: Johnston County Water System Improvements-
Looping and Small Water Main Extension
Johnston County, North Carolina
DWQ Project # 08-0468
Dear Mr. McMillan:
This letter is based on your request for additional information dated April 7, 2008, and
the telephone conversation we had on May 2, 2008. The letter you sent requesting
additional information had five (5) items you needed to process the Nationwide Pen-nit 12
we requested.
1) "Please provide a qualitative indirect and cumulative impact analysis for the
project." The project is being constructed within the limits of the existing mowed
and maintained highway right of ways. The temporary impacts associated with
the proposed six crossings are minor and most of the areas were impacted
previously during the construction of the highways, and do not contain any large
trees.
2) "Please locate your project on the most recent, published and bound Wake County
soil survey and the most recent USGS 1:24,000 topographic quadrangle map." As
per our telephone conversation, these crossings are so small, that when we zoom
in using ArcView GIS, the soils and topographic backgrounds layers lose their
resolution and become very grainy. Per your response, we are not sending the six
proposed impact areas on these backgrounds.
3) "Please enumerate buffer impacts on the site plan and in the PCN application, and
clearly label each impact." As discussed during our telephone conversation, there
are no buffer impacts; the proposed installation of the water lines will take place
within the limits of existing right-of-ways. By the time it is necessary to go
around the various culverts or bridge bulkheads, the impact area is within the
stream area and past the buffers, which were impacted during construction of the
highways.
SWE, INC. / 1330 Highway 501 Business / Conway, SC 29526 / p 843.347.7800 f 843.347.7848 / www.smeinc.com
Johnston County Waterline Improvement Project
NCDENR DWQ Permit No. 08-0468
May 2, 2008
S&ME Project No. 1634-08-026
4) "Please locate all of the protected riparian buffers as overlays on the site plan
clearly showing Zone 1 and Zone 2." As mentioned in response to question 3,
there are no Zone 1 and Zone 2 buffers because of the highway right-of-ways.
5) "There appear to be wetland impacts associated with the project. Please fill in
Section VI, Part 2, of the PCN application." Based on my site visit, the proposed
installation will take place within the shoulder of the various roads. The six
proposed impacts are to stream tributaries. Johnston County is requiring the
proposed pipe line to leave the existing shoulder of the road five (5) feet prior to,
and after, a culvert larger than 36", multiple large culverts, or a bridge. The pipe
line must be installed five feet out from the structure also. By the time the pipe
line reaches the five foot mark, it is already into the stream tributary, and does not
have impacts to the adjacent wetlands.
Ian, I hope this information helps you process the requested Nationwide Permit 12.
Please let me know if you need any additional information.
Sincerely,
S&ME, Inc.
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Charles Oates
Environmental Department Manager