20070001 Ver 1_More Info Letter_20070219

~OF W ATF9Q Michael F. Easley, Governor
`Q G William G. Ross Jr., Secretary
Vj ~ North Carolina Department of Environment and Natural Resources
} .:.i
~ ..~ Alan W. Klimek, P.E. Director
Division of Water Quality
February 19, 2007
DWQ Project # 07-0001
Wake County
Page 1 of 2
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Ross Lampe
235 Market Street
Smithfield, NC 27577
Lot 31 in the Carriage Hills Subdivision, Raleigh, NC
UT to Crabtree Creek [030402, 27-33-(10), C, NSW, 303d]
REQUEST FOR MORE INFORMATION
Dear Mr. Lampe:
On December 28 2006, the Division of Water Quality (DWQ) 401 Oversight/Express Permitting Unit
received your minor variance application dated December 28, 2006, regarding your request for a Minor
Variance from the Neuse Buffer Rules (15A NCAC 2B .0233) for the subject property. The DWQ is
required to prepare a "preliminary finding" /"finding of fact" as to whether the variance request meets the
requirements of 15A NCAC 02B .0233(9)(a). The DWQ may attach conditions to a variance approval
that support the purpose, spirit and intent of the riparian buffer protection program. Conditions usually
include stormwater management and buffer mitigation.
Additional information will be required before we can proceed with the review of your variance request.
Therefore, unless additional information is provided as described below, we will have to move toward
denial of your request per 15A NCAC 2B .0233 and will place this project on hold as incomplete until we
receive this additional information.
Additional Information Requested:
Please show topographic lines on the plans for the grassed swale and level spreader. This information
will show that appropriate slopes are in place for the level spreaders to function appropriately.
2. The designs are based on the assumption that no flow is entering the lot from surrounding areas, such
as the adjacent cul-de-sac and lot 30. Please show where the drainage from these areas is being
directed.
3. Please check your C value for the designs. It appears that when the footprint of the driveway is
considered, the portion of the lot being treated by the proposed grassed swale and level spreader will
be significantly greater than 30 percent impervious.
4. Please provide a photograph of the buffer area adjacent to the proposed level spreader so that DWQ
staff may see and evaluate the ground cover.
North Carolina
401 Oversight/Express Review Permitting Unit ~Nalurallt~
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] /FAX [phone] /Internet: httn://h2o.enr.state.nc.us/ncwetlands
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Mr. Ross Lampe
Page 2 of 2
February 19, 2007
Please redesign your level spreader. Earthen level spreaders have proven to fail consistently in the
field. Because of this documented failure, DWQ cannot permit these devices for diffuse flow. Please
provide applicable worksheets to reflect your level spreader change.
Please respond in writing within three weeks of the date of this letter by sending a copy of this
information to me and to Mike Horan of the DWQ Raleigh Regional Office. If we do not hear from you
in writing within three weeks, we will assume that you no longer want to pursue your variance request
and we will consider the request as withdrawn. Please call Ms. Amy Chapman of this office at (919) 733-
1786 if you have any questions.
Sincerely,
;'-°• n
Cyndi Karoly, Supervisor
401 Oversight/Express Review Permitting Unit
CBKlasc
cc: Brian Leonard, PE; BRL Engineering; 704-B East Stanley St; Four Oaks, NC 27524
Mike Horan, DWQ Raleigh Regional Office
File Copy
Central Files
Filename: 070001 CarriageHillsSDLot3 l (Wake)On_Hold
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] /FAX [phone] /Internet: http://h2o.enr.state.nc.us/newetlands
N °ethCarolina
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An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper