20040587 Ver 2_More Info Received_20061111

Charlotte-Mecklenhurg
~ ~~(~'[}'~ J{ Charlotte Storm Water Services
,~ 4 .~_ WATER 600 E. Fourth St., 14~^ Floor
Charlotte, NC 28202-2844
Services
November 8, 2006 - r
Ms. Cyndi Karoly
NCDWQ 401/Wetlands Unit
2321 Crabtree Boulevard ~,,_. ~ , ; ~~ ~ ~. ~a~ ~ '~~~ ~~ <,a~~r'~
Raleigh, North Carolina 27604
Subject: Section 401 WQ Certification Project Compliance Inspection
501 Lyles Court Maintenance Project
DWQ# 04-0587
Charlotte, North Carolina
Dear Ms. Karoly:
The City of Charlotte Storm Water Services (CSWS) is hereby contacting the NCDWQ
401/Wetlands Unit regarding jurisdictional impacts associated with the 501 Lyles Court
Maintenance Project. On November 28, 2005, NCDWQ approved this project under
Water Quality General Certification Numbers 3494 and 3495 (DWQ# 04-0587).
Authorized jurisdictional impacts to the on-site perennial stream channel consisted of:
4001inear feet (400 bank feet) of gabion wall installation along the right bank, an
additional 140 linear feet (140 bank feet) of right bank reshaping with soft stabilization
(permanent erosion control matting), and the installation of a 10-linear foot rip rap apron
at the outlet of a storm drainage pipe replacement. On October 31, 2006, CSWS's Isaac
Hinson inspected the project for Nationwide Permit/Water Quality Certification
compliance. Actual project impacts consisted o£ 4001inear feet (400 bank feet) of
gabion wall installation along the right bank, an additional 1401inear feet (140 bank feet)
of right bank reshaping with soft stabilization (permanent erosion control matting),
placement of rip rap along the bottom half of 65 linear feet (65 bank feet) of reshaped
bank, placement of an additional 18 linear feet (18 bank feet) of rip rap on the bank, and
the installation of a 10-linear foot rip rap apron at the outlet of a storm drainage pipe
replacement. Authorized and actual project impacts are summarized in the following
table:
Jurisd tional
Actavitr` Authorized _ Actual
<~ •~ I~nauthorized

~
Feature Im 'act Tin 'ac# Tm acts
~
Perennial Gabion wall installation along 4001inear feet 400 linear feet

Stream
the ri ht bank
(400 bank feet)
(400 bank feet) N/A
Perennial Bank reshaping and soft 1401inear feet 1401inear feet

Stream
stabilization (ECM)
(140 bank feet)
(140 bank feet) N/A
Perennial Rip rap placement along lower
O if 65 linear feet 65 linear feet
Stream ortion of resha ed bank 65 bank feet) (65 bank feet)
Perennial Rip rap hard stabilization on O if 18 linear feet 18 linear feet
Stream ri ht bank (18 bank feet) (18 bank feet)
Perennial Rip rap apron installation at

Stream
newl re laced i e outlet 10 if l O if N/A
To report drainage problems: 704-336-RAIN http://stormwafer.charmeck.org

Charlotte-Mecklenburg
~TORIVI
Charlotte Storm Water Services
600 E. Fourth St., 14~" Floor
-- ~ ~~~~=~ WATER Charlotte, NC 28202-2844
Services-~-'~-~r
Remedial corrective actions are not practicable as the project has been completed and
fencing has subsequently been installed along the affected properties, which precludes site
access. Since this project was not in compliance with its authorized impacts, CSWS is
submitting this letter in lieu of the NCDWQ Certificate of Completion form. Please review
and contact me with any comments or concerns.
Sincerely,
Isaac Hin~on
Wetland Specialist
City of Charlotte Storm Water Services Division
Desk phone [phone]
[e-mail]
cc: Mr. Steve Chapin, U.S. Army Corps of Engineers
File
To reporf drainage problems: 704-336-RAIN http.//stormwater.charmeck.org