20061119 Ver 1_Emails_20070604

Re: Von Drehl Pond Mitigation Plan -Catawba Co (06-1119)
Subject: Re: Von Drehl Pond Mitigation Plan -Catawba Co (06-1119) ~ ~ - `f I
From: Alan Johnson <[e-mail]>
Date: Mon, 04 Jun 2007 16:58:26 -0400
To: "[e-mail]" <[e-mail]>, Ian McMillan <[e-mail]>
Yep the previous restoration isn't that impressive. The pond just above, doesn't
allow the stream to "recharge" with sediment, so it tends to look like a trench.
That is the reason for proposing to deposit sediment just below the pond (to
distribute sediment). It is highly sinuous, if it needs to be reduced then do it.
(I missed the 1.8, I thought it was similar to the reference). Given the previous
restoration (even though it was done "back in the day" relatively speaking), good
monitoring should be required and a timeline for completion and planting. I think
the previous was just constructed and walked away from. And I think I issued a
NOV for the failure to plant on the old part. I "stumble" on it, because the site
was picked for the Von Drehle project.
[e-mail] wrote:
Ian:
I have a number of issues with this proposed plan. The sinuosity of the
existing channel is 1.17 and the sinuosity of the reference channel is 1.15.
They should NOT be designing a restoration with a sinuosity of 1.8; that is a
recipe for failure. Unfortunately, that is the sinuosity we approved for Phase
I of the project (already completed)
They need to reference the 2003 interagency Stream Restoration Guidelines for
the monitoring schedule; they are proposing years 1,3 and 5. For mitigation
sites I believe we are requiring annual monitoring, to include cross sectional
measurements and longitudinal surveys with results displayed both in tables and
graphically, comparing each measurement to both the as-built and to each
previous year of monitoring. All structures should also be monitored.
Vegetation monitoring is reported similarly. Monitoring should be done at the
same time every year, and reports should be submitted annually to USAGE and DWQ.
They should not have red maple included on their planting list.
How does USAGE (Steve Chapin) feel about the plan? It is pretty sparse on
details. It also concerns me that individual guys (Mr. von Drehle and Mr.
Wells) are responsible for the monitoring and reporting.
Also, Item 5 in the plan states that no trees or shrubs have been planted yet in
the Phase I portion of the stream, construction of which was completed in
fall/winter of 2005. This does not bode well for the rest of the project. They
are out of compliance with their 401 for the Cline Plantation portion of the
project.
If you need to issue soon, you may want to follow up with Alan to get any
additional comments, and check with Cyndi about issuing when they are not in
complaince with their last 401. I don't have the files, so I don't know what
the connection is between this applicant and the previous applicant.
Eric
Alan Johnson - Alan.JohnsonC~?ncmail.net
North Carolina Dept. of Environment & Natural Resources
Div. of Water Quality
610 E. Center Ave., Suite 301
Mooresville, NC 28115
Ph: [phone] Fax: [phone]
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