20061151 Ver 2_Triage Comments_20090702

DWQ#
Triaged By:
Reviewer 1
Reviewer 2
Reviewer 3

Use this form instead of writing inside the folder
Triage Comment Sheet
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Date:
Date: ?-
Date:
Issue Project (Reviewer 1) ? Issue Project (Reviewer 2)
Issue with conditions (Reviewer 1)
s -G-T? 54
J] Issue with conditions (Reviewer 2)
? More Information (Reviewer 1)
? Return Application (Reviewer 1)
? Send to Regions (Reviewer 1)
? Send to Regions (Reviewer 2)
? More Information (Reviewer 2)
? Return Application (Reviewer 2)
SATriage Forms\Triage Issue Sheet.doc
PLEASE PRINT CLEARLY
Lucas, Annette
From: Lucas, Annette
Sent: Thursday, July 02, 2009 4:08 PM
To: [e-mail]
Cc: Mcmillan, Ian; Lucas, Annette; Karoly, Cyndi
Subject: 06-1496v2 Apex Peakway level spreaders
Russell,
Just to re-state our conversation - the DWQ is about to publicly notice a policy change whereby any publicly funded
linear transportation project will be allowed to comply with the NCDOT BMP Manual. This would affect the Apex
Peakway project and would mean that providing level spreaders for diffuse flow to buffered streams would be sufficient
and that bioretention cells would not be necessary. During the public comment period, we allow applicants to choose
whether to follow the old or the new policy.
Because of our statutory timeframe for project review on the Apex Peakway, we are going to issue the 401 based on the
information we received on May 29, 2009 that includes designs for bioretention cells. If you decide that you would
prefer to use level spreaders on this project in lieu of bioretention cells, you can submit a request for stormwater
management plan modification in the future.
Based on my preliminary review of the level spreader information that the DWQ received on Feb. 27, 2009, 1 note the
following deficiencies:
1. The level spreaders at outlets 16 and 13 have been placed within the riparian buffer. This is not permitted.
Also, these two levels spreaders must be located so the entire filter strip is not impeded by fill slopes, wing
walls, etc.
2. For the level spreader at Outlets 22 and 27: It is not allowable to divide the level spreader into two level
spreaders in series that are only half of the required length. These level spreaders are also within the riparian
buffer, which is not allowed.
3. The following items were omitted from the submittal:
• A 1" = 30' plan view of each proposed level spreader with proposed one-foot topo lines.
• The construction sequence.
• A photograph of the filter strip vegetation.
• The drainage area for each level spreader depicted on the plan sheets.
• The signed and notarized operation and maintenance agreements.
Hope that helps! Shoot me an email to let me know if you plan to build the Bioretention Cells or if you would like to ask
for a stormwater management plan modification after we issue your 401 Certification.
Thanks,
Annette
Annette Lucas, PE
NC Division of Water Quality - 401 Oversight/Express Unit
2321 Crabtree Boulevard, Suite 250
Raleigh, North Carolina 27604
Phone: [phone]
Fax: [phone]
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.