NC0086690_Nitrogen Monitoring on Well Water Filter Backwash Facilities_20040225

Heater 202 MacaCourt
Cary,Northh Carolina 27511
-�..� Utilities phone:[phone]
fax: [phone]
WATER AND WASTEWATER SERVICES P.O.Drawer 4889,Cary,NC 27519
February 25, 2004
Mr. Charles Weaver
N.C. Division of Water Quality
1617 Mail Seg-dice Center
Raleigh, NC 27699-1617
Re: Nitrogen Monitoring on Well Water Filter Backwash Facilities
Dear Charles:
Enclosed please find the limits pages for the following NPDES permits
for discharge of filtered backwash water from community wells owned by Heater
Utilities, Inc. (Heater) .
System Permit No.
Hollybrook NC 0082996
Nottingham Forest NC 0055701 r F n 2 6 2004
Oak Hollow NC 0073679
Stanstead ANINNOWWW NC 0086690
Waterfall Plantation NC 0085863
Each of the limits pages requires monitoring of Total Nitrogen and its
components (NO2 + NO3) and (TKN) on a semi -annual basis, which we believe is
appropriate. The limits page also requires Heater to monitor and report the
calculated value of Total Nitrogen load in pounds per month on a monthly
basis.
I assume this means that Heater can perform the tests in January and
June of each year and use this concentration to calculate the results in each
of the six months following the sample.
Unless otherwise instructed, this is the method Heater will use to
report the monthly Total Nitrogen load and add the 12 monthly results to
obtain the annual load.

Page Two
Mr. Charles Weaver
February 25, 2004
Please advise if I need to make any changes to Heater's reporting.
Sincerely,
hJe ,/!'�H. Tweed
President
JHT/rt
cc: Ken Schuster

Permit NC0086690
5-4q -5-14.1j
/1‘
EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
e period beginning on the effective date of the permit and lasting until expiration, the
is authorized to discharge from outfall 001. Such discharges shall be limited and monitored
by the Permittee as specified below for each outfall:
Effluent LIMITS MONITORING REQUIREMENTS
Characteristics
Monthly Daily Measurement Sample Type Sample Location
Average Maximum Frequency
Flow Monthly Estimate Effluent ,
Total Suspended Solids 30.0 mg/L 45.0 mg/L Quarterly Grab Effluent
Settleable Solids 0.1 mVL 0.2 ml/L Quarterly Grab Effluent
Iron Quarterly Grab Effluent
Total Residual Chlorine1 17pg/L Quarterly Grab Effluent
Turbidity 50 NTU Quarterly Grab Effluent
Total Nitrogen(TN)2 Monitor&Report(mg/L) Semi-annually Grab Effluent
Total Monthly Flow 2 Monitor&Report Monthly Calculated Effluent
(million gallons/month)
Nitrate/Nitrite Nitrogen2 Monitor&Report(mg/L) Semi-annually Grab Effluent
(NO2+NO3)
Total Kjeldahl Nitrogen(TKN)2 Monitor&Report(mg/L) Semi-annually Grab Effluent
TN load(pounds/month)2 Monitor&Report Monthly Calculated Effluent
(pounds per month)
TN load(pounds/year)2 Monitor&Report Annually Calculated Effluent
(pounds per year)
Total Phosphorus Monitor&Report(mg/L) Semi-annually Grab Effluent
Footnotes:
1. Limit takes effect May 1, 2005. Permittee will monitor TRC until the limit takes effect.
2. See A. (2) for Total Nitrogen monitoring and reporting requirements.
All samples collected should be from a representative discharge event.
There shall be no discharge of floating solids or visible foam in other than trace amounts.