NC0022691_Permit Modification_20011203

NPDES DOCIMENT SCANNING COVER :SHEET
NC0022691
Autumn Forest WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification `�
,-
Complete File - Historical
Engineering Alternatives (EAA)
Plan of Action
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Permit
History
Document Date:
December 3, 2001
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OF\NATCRpMichael F. Easley
Govemor
y AT,/ J William G. Ross, Jr., Secretary
r w 11 y i r NCDENR North Carolina Department of Environment and Natural Resources
-( Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
Mr. Larry Stephens
Chateau Communities, Inc. / Autumn Forest
3700 East Sourwood Drive
Browns Summit, North Carolina 27214
December 3,.2001
Subject: Modification of NPDES Permit NC0022691
Autumn Forest WWTP
Guilford County
Dear Mr. Stephens:
Personnel in the NC DENR Winston-Salem Regional Office reviewed the subject permit and discovered a
typographical error on the Effluent Limits and Monitoring Requirements page. This modification corrects that page.
Specifically, footnote 3 now shows that compliance with the 2.0 mg/L quarterly average limit for total phosphorus
will be based on an average of weekly samples.
Please find enclosed the revised effluent page, which should be inserted into your permit. The old page may then
be discarded. All other terms and conditions contained in the original permits remain unchanged and in full effect.
This permit modification is issued under the requirements of North Carolina General Statutes 143-215.1 and the
Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency.
If any parts, measurement frequencies or sampling requirements contained in this permit modification are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days
following receipt of this letter. This request must be a written petition conforming to Chapter 150B of the North
Carolina General Statutes, filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North
Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
If you have any questions concerning this permit modification, please contact Charles Weaver of the NPDES
Unit at [phone], extension 511.
cc: Central Files
Winston-Salem Regional Office, Water Quality Section
NPDES Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Sincerely,
� v
(40,.,L.,
Gregory J. Thorpe, Ph.D.
Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer Vtsir us ON THE INTERNET it http://h2o.enr.state.nc.us/NPDES

Permit NC0022691
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location1
Flow
0.082 MGD
Continuous
Recording
influent or Effluent
BOD, 5-day (202C)
7.0 mg/L
10.5 mg/L
Weekly
Composite
Effluent
Total Suspended Residue
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(April 1— 0ctober 31)
2.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(November 1— March 31)
4.0 mg/L
Weekly
Composite
Effluent
Dissolved 0xygen2
Weekly
Grab
Effluent,
Upstream & Downstream
Fecal Coliform
(geometric mean)
200 / 100 ml
400 / 100 ml
Weekly
Grab
Effluent
Total Residual Chlorine
2/Week
Grab
Effluent
Temperature (2C)
•
Weekly
Grab
Effluent,
Upstream & Downstream
Total Nitrogen
(NO2+NO3+TKN)
Quarterly
Composite
Effluent
Total Phosphorus3
2.0 mg/L
Weekly
Composite
Effluent
pH4
Weekly
Grab
Effluent
Footnotes:
1. Upstream = at least 50 feet upstream from the outfall. Downstream = at least 100 feet downstream from the
outfall.
2. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/L.
3. Compliance shall be based on a quarterly average of weekly samples.
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit question
Subject: Permit question
Date: Mon, 26 Nov 2001 09:43:31 -0500
From: Jenny Rankin <[e-mail]>
Organization: NC DENR Water Quality
To: Charles Weaver <[e-mail]>
Good Morning Charles!
I have a question about the permit for Autumn Forest (NC0022691) in
Guilford County. The permit has a monitoring requirement for total
phosphorus and the measurement frequency is weekly, but there is no
stipulation in the permit that states compliance is based on a
quarterly average of the weekly samples. I just wanted to make sure
this was correct or if that stipulation was accidentally left out of the
permit.
Thank you!
Jenny Rankin
Division of Water Quality
Winston-Salem Regional Office
585 Waughtown Street
Winston-Salem, NC 27107
[phone] ext. 268
fax: [phone]
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11/26/2001 3:39 PM