NC0063096_speculative limits_20051205

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
December 5, 2005
Mr. William Kreutzberger
CH2M HILL
3824 Parkway Plaza Boulevard/Suite 200
Charlotte, North Carolina 28217-1968
Alan W. Klimek, P.E. Director
Division of Water Quality
Subject: Correction to Speculative Effluent Limits
Proposed Western Wake Regional Wastewater Management Facilities
Dear Mr. Kreutzberger:
This letter is to provide a formal correction to an error in our letter of December 15, 2004 regarding
speculative effluent limits for the subject facilities. Table 2 in that letter regarding Speculative Limits for the
Holly Springs Water Reclamation Facility had an error regarding the limitations for Total Nitrogen and
Total Phosphorus. While the footnote for these limitations was correct, the mass load in the table for these
two parameters was reversed. The attached Table 2 includes a correction to these limits.
There were no other errors in the December 15, 2004 letter. Should you have any questions about this
change, please contact me at [phone], extension 517.
Sincerely,
David A. Goodrich 1
Point Source Branch Chief
cc: Town of Holly Springs, Stephanie Sudano
CDM, Tommy Esqueda
Hazen and Sawyer, Bob Berndt
Fayetteville Regional Office, Surface Water Protection Section
Raleigh Regional Office, Surface Water Protection Section
Modeling/TMDL Unit, Michelle Woolfolk
NorthCarolina
,Naturally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: h2o.enr.state.nc.us 512 N. Salisbury St. - Raleigh, NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper

TABLE 2 (REVISED)
Speculative Limits for Holly Springs Water Reclamation Facility
Effluent
Characteristics
Effluent Limitations
Monthly
Average
Weekly Average
Daily
Maximum
Seasonal
Average (April
—October)
Flow
8 MGD
BOD5, Summer
5.0 mg/L
7.5 mg/L
BOD5, Winter
10.0 mg/L
15.0 mg/L
TSS
30.0 mg/L
45.0 mg/L
NH3 as N,
Summer
1.0 mg/L
3.0 mg/L
NH3 as N,
Winter
2.0 mg/L
6.0 mg/L
DO'
6.0 mg/L
TRC4
28 ug/L
Fecal coliform
(geometric mean)
200 /100 mL
400 /100 mL
Tp2
1331b/day
TN3
4001b/day
1 Compliance for DO will be measured at the WRF compliance point and evaluated as a daily
average concentration
2 Limit based on 2 mg/L TP. For lower flow limits, limit would be based on 2 mg/L and the
lower permitted flow
'Limit based on 6 mg/L TN. For lower flow limits, limit would be based on 6 mg/L and the
lower permitted flow
4Limit to be applied only if chlorine is used for disinfection