NC0039420_Permit Modification_19991223

Mate of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman; Secretary
Kerr T. Stevens, Director
December 23, 1999
Ms. Cyndi L. Ward
Virginia Department of Transportation
1401 East Broad Street
Richmond, Virginia 23219
Dear Ms. Ward:
e��
NCDENR
Subject: Permit Modification
I-77 Rest Area
NPDES Permit No. NCO039420
Surry County
In accordance with your request to the Winston Salem Regional Office for modification of the sample type for
BOD5 and Total Suspended Solids, the NPDES staff has reviewed the North Carolina Administrative Code Section 15A
NCAC 2B..0505 (c)(3)(B) regarding monitoring requirements. The Division recommends a permit modification of
sample type for BOD5 and TSS from composite to grab. In addition, influent monitoring for BOD5 and TSS will be
deleted. Accordingly, we are forwarding herewith these modifications to the subject permit.
Please find enclosed the amended Effluent page for outfall 001, which should be inserted into your permit. The old
pages should be discarded. This permit is issued pursuant to the requirements of North Carolina General Statute 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 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 in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes,
and filed with the office of Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447.
Unless such a demand is made, this permit shall be final and binding.
Please take notice that this permit is not transferable. Part II, E.4. addresses the requirements to be followed in case
of change in ownership or control of this discharge.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Permit No. NC0039420
I-77 Rest Area
December 21, 1999
Page 2
If you have any questions or need additional information, please contact Jacquelyn M. Nowell at telephone number
[phone], extension 512.
Sincerely,
,,err T. Stevens
Attachment
cc: Central Files
Winston Sale egional Office
Point Source Compliance/Enforcement Unit

A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Permit No. NCO039420
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall.serial number
001. Such discharges shall be limited and monitored by the Permittee as specified below:
5 _, .: _ - ..': , Si E•: _ c ,:. ,..: >.
. .: a. t (h ..:
EiFLUE1�T. ,HAR CTEat_ST1CS.LIMITS,
A
f i4 :�,� z"s i
.'. it
pp:,.
'J♦ 3 k. *1>.;,# i
M(3N�`t.OR1NG Fi` 1J1RE
„<.,.
Y
. ,
.i {-
L 'Y 3Y
xQIENTS,.,
fje.i�l7i�.�;'!
f..
� , ,.,,� , :.� � ; . � � : r• c w, � �
t Modt I`I , :. � t<
� �, �.,..W, ,e ek.1 �
.-Dtat1 5 {£`Max.i 5E17
_
-
1
.Barn le
,w
.
Flow MGD
0.020
Weekly
Instantaneous
I or E
BOD5
30.0 mg/I
45.0 mg/I
Weekly
Grab
E
Total Suspended Solids
30.0 m /I
45.0 mg/1
Weekly
Grab
E
NH3 as N (April 1 - October 31
6.0 m /I
2/Month
Grab
E
NH3 as N November 1 - March 31
22.0 mg/1
2/Month
Grab
E
Fecal Coliform(geometric mean
200/100 ml
400/100 ml
Weekly
Grab
E,U,D
H3
2/Month
Grab
E
Total Residual Chlorine
2/Week
Grab
E
Temperature °C ^
_
Weekly
Grab
E,U,D
etEvit \/ \�/ `-� u
� -� �--'
�--'�
`` -/ N--
---`W6ekl -- —
`__Grab
Total Nitrogen NO2+NO3+TKN
Quarterly
Composite
E
Total Phosphorus
Quarterly
Composite
E
Notes:
1 Sample Locations: E - Effluent, I — Influent, U- Upstream approximately 100 feet above the discharge point, D- Downstream approximately 300 feet below the discharge
point .
2 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.