NC0086142_Permit (Modification)_19980327

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
March 27, 1998
Ms. Jennifer F. Rose
Mid South Water Systems, Inc.
PO Box 127
Sherrills Ford, North Carolina 28673
Subject: NPDES Permit Modification
NPDES Permit No. NC0086142
Mid South Water Systems, Inc.
Oakley Park Subdivision
Gaston County
Dear Ms. Rose:
The Division has received and reviewed your request for modification of monitoring
requirements for Turbidity, Total Suspended Solids and Total Residual Chlorine. After review of
this request, the Division has decided to change the monitoring to quarterly for Total Suspended
Solids. Monitoring requirements will remain the same for Total Residual Chlorine and Turbidity.
Based on further review of this permit file, the Division has also decided to change the sampling
location for turbidity from upstream and downstream sampling to effluent sampling. Attached is a
revised effluent page which reflects these changes. The new effluent page should be inserted into
your permit and the old effluent page should be discarded.
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 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 demand is made, this decision shall be final.
If you have further questions in this matter, please call Mr. Mack Wiggins at (919)
733-5083, ext. 542.
. Sincerely,.
Preston Howard, Jr. P.E.
cc: Central Files
Mooresville Regional Office/Water Qu. •'" Section
NPDES Unit
Point Source Compliance Enforcement Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] Fax [phone]
An -Equal Opportunity Affirmative Action Employer 50% recycled 10% post -consumer paper

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC0086142
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) (001) and (002) . Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
Total Suspended Solids
Settleable Solids
Turbidity
Iron
Total Residual Chlorine
Lbs/day
Discharge Limitations
Units (specify)
Mon. Avg. Daily Max Mon. Avg. Daily
30.0 mg/I
0.1 ml/I
45.0 mg/I
0.2 ml/I
50 NTU
All samples collected should be of a representative discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Monitoring
Measurement
Max. Frequency
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Requirements
Sample
Type
Grab
Grab
Grab
Grab
Grab
Grab
*Sample
Location
E
E
E
E
E
E

MID SOUTH Water Systems, Inc.
PO Box 127
Sherrills Ford, North Carolina 28673
[phone]
February 26, 1998
Mr. Charles Weaver
NPDES Unit
NC DENR / Water Quality Section
P. O. Box 29535
Raleigh, N.C. 27626-0535
Subject: Request for Modification of Discharge Permit No. NC0086142
Oakley Park S/D, Gaston County
Dear Mr. Weaver:
FF9P
POINT �'OURCE BRANCH
Per your telephone conversation of this date with Mr. Ron Haynes, P.E., of our office, I am
attaching a check in the amount of $100.00 (One Hundred Dollars) to cover the cost of permit
modifications. I apologize for the check being separated from the cover letter which explained the
purpose of the check and the requested modifications when it was mailed to your office previously.
When the actual Discharge Permit was issued, the language contained therein, specifically the
monitoring frequency on the Effluent monitoring, was not consistent with the other Discharge Permits
which have previously been issued to Mid South. We are requesting several changes in the monitoring
requirements based on site conditions. We were advised by Mac Wiggins that your office would consider
granting such a request at this time.
The source is a small volume backwash system for a green sand filter used in water treatment.
The typical frequency required in the past for permits of this type was quarterly sampling for Total
Suspended Solids. There is no well defined stream for the discharge therefore, the upstream and
downstream sampling for Turbidity should be eliminated. Likewise the Chlorine Residual should be
eliminated since there is no chlorination treatment for wastewater purposes. We are requesting the
following measurement frequency: Total Suspended Solids (E) from 2/MO to Quarterly; Turbidity (U,D)
from Quarterly to none; and Total Residual Chlorine (E) from Quarterly to none.
We have no objections to the other parameters which have Quarterly monitoring requirements.
Please make these changes and reissue our final permit if possible. If you find that you are unable to
make these changes, please notify myself, or Ron Haynes, P.E., at [phone] as soon as possible
since the expiration of the 30 day final period expires on February 28, 1998.
Sincerely,
ciattr
Jennifer F. Rose
Environmental Coordinator
Enclosure

Permit No. NC0086142 -`
A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
P
ee
During the period beginning on the effective date of the permit and lasting
ash gd b until
expiration,
permitteeles e mi t edisbauthorized to discharge from
outfall(s) (001) and (002) . Such discharges shall be limited andY
Effluent Characteristics
Flow
Total Suspended Solids
Settleable _Solids
Turbidity
Iron
Total Residual Chlorine
Lbs/day
Mon. Avg. Daily Max
Discharge Limitations
Units (specify)
Mon. Avq_ Daily Max.
30.0 mg/I
0.1 ml/I
45.0 mg/I
0.2 ml/I
Monitoring Requirements
Measurement Sample *Sample
Frequency Type Location
Quarterly RtrifGrab E
2/Month -*QI (eV Grab E
Grab E
Grab U,D
E
E
Quarterly ro�t�
Quarterly-11/M
Quarterly Grab
Quarterly -Grab
** The discharge shall not cause the turbidity of the receiving water to exceed
the turbidity in the U. If treceivinge turbidity
b lwat re Sampling shall apply only ifeds these levels due to
background conditions, the discharge level cannot cause any increase in
discharge reaches the receiving stream.
All samples collected should be of a representative discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.