NC0085863_Fact Sheet_20180628

FACT SHEET FOR EXPEDITED PERMIT RENEWAL
This form completed by Permit Writers for all expedited permits which do not require full Fact
Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks,
etc) that can be administratively renewed with minor changes, but can include facilities with more
complex issues (Special Conditions, 303(d) listed water, toxicity testing, instream monit g,
compliance concerns). _
Basic Information for Expedited Permit Renewals
Permit Writer/Date
Joe R. Corporon, L.G. 28Jun201
Permit Number
NCO085863
Facility Name
Aqua NC — Waterfall Plantatio TP
Basin Name/Sub-basin number
Neuse River Basin / 03-04-0
Receiving Stream
Horse Creek
Stream Classification in Permit
WS-IV; NSW; CA
Does pLrmit need Daily Max NH3 limits?
No
Does permit need TRC limits/language?
Already exists
Does permit have toxicity testing?
Not required of &reensand tech.
Does permit have Special Conditions?
No
Does permit have instream monitoring?
No
Is the stream impaired on 303 d list)?
No
Any obvious compliance concerns?
No
Any permit mods since last permit?
2/8/2012 modification implemented parts of 2009
WTP strategy.
Current expiration date
31 Jan2018
New expiration date 31Jan2023
Facility not eligible for NCG59 because monitoring
Eligibility for General Permit NCG590000 I is required for TN/TP (Meuse River Basin Strategy)
parameters not included in the general permit for
�reensand;
Permit NC0085863 was last issued (2013) in accord with 2009 WTP permitting guidance for
Greensand filters. Renewal is updated per this strategy.
Permitting Decisions and Rationale 2018:
1. applied WTP strategy for greensand-type treatment technology;
2. facility does not use zinc ortho-phosphate, therefore Zn monitoring not required;
3. discontinued monitoring for Total Iron [per strategy];
4. retain Manganese monitoring, Quarterly; no limit per strategy (WS waters);
[draft RPA "max predicted" 40,848 ug/L vs. "allowable" 200 ug/L (see RPA);
5. all other effluent databases suggest no impact to the receiving waterbody,
6. Whole Effluent Toxicity (WET) -testing not required of greensand;
7. waste flow = 0.0032 MGD discharges 2 to 3 times week for — 2 hours,
not to exceed 64,000 gallons per week [max well pumping rate];
8. Nutrient monitoring TN/TP required in permit to establish loading at the estuary
[TN (<0.3 mg/L max.) and TP (< 0.9 mg/L max.)], Neuse River Basin
Monitoring Strategy;
9. sludge management plan is adequate.