20050597 Ver 1_Buffer and nutrient offset audit Neuse 02_20091130

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WV 3 0 2009
To: John Dorney - DWQ
FROM: Marc Recktenwald - EEP
RE: Riparian Buffer and Nutrient Offset Mitigation Verification for
Norwood Gainey (G) - Wayne County (Meuse 02)
DWQ# 2005-0597
DENR • WATER QUALITY
WETLANDS AND STO MMATut BRANCH
By Memo dated May 21, 2009, Cyndi Karoly - NCDENR-DWQ - 401 Oversight and
Express Permitting Unit requested that the Ecosystem Enhancement Program (EEP) verify the
amount(s) of Riparian Buffer and Nutrient Offset Mitigation Credit the subject site would be able
to provide. The memo identified the following primary areas of concern:
1. If nutrient offset credit exceeding the 21.6 acres (within 50 feet) is desired, these areas
will require planting. Tracy Morris indicated that these areas were to be planted in trees
at the end of this growing season.
Response: The project has been bid and is in contracting for supplemental planting, which must
be finished by 2/5/10. The 26.2 acre area designated for supplemental planting is shown on the
attached Figure which was pulled from the bid package.
2. In addition, Condition 8 of the 401 Water Quality Certification for this site states "You
have proposed a Riparian Buffer Herbaceous Zone which would be located beyond Zone 2.
DWQ cannot give credit for any restoration outside of the 50-foot buffer". Therefore, in
order to get nutrient offset credit for areas of the site beyond 50 feet, you will need to
request a modification to your 401 Water Quality Certification that includes a revised
planting plan, and an As-Built report documenting that the planting has occurred, the
species planted and planting densities. These areas will require five (5) years of vegetative
monitoring.
Response:. EEP will submit the required modification and supporting documentation on or before
November 15, 2009.
3. The monitoring report for the site states that target stem density is 320 stems per acre
after three years, and 260 stems per acre after five years. If nutrient offset credit is desired
from this site, the target stem density at the end of the monitoring period is 320 stems per
acre.
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P , . NCDENR
North Carolina Ecosystem Enhancement Program, 1652 Mail Service Center, Raleigh, NC 27699-1652 / 919-715-0476 / www.nceep.net
Response: EEP will continue monitoring the site to ensure the required stem density of 320
stems per acre and the end of the monitoring period will be achieved.
In addition, EEP Staff have marked approximately 50% of the easement and will have a PLS
mark the remainder.
Based on the above information, the Debit Ledger will list this site with 47.8
Nutrient offset Buffer Mitigation Units and 2.7 Riparian Wetland Mitigation Units (5.4 ac
Riparian Wetland Enhancement).
If you have any questions or wish to discuss this matter further, please contact me at any time.
Cc: Cyndi Karoly - NCDENR-DWQ - 401 Oversight and Express Permits Unit
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