NC0034703_Renewal (Application)_20231229

December 20,2023
Division of Water Resources
Water Quality Permitting Section—NPDES
1617 Mail Service Center
Raleigh,NC 27699-1617
Subject: NPDES Permit Renewal Application RECEIVED
Permit Number: NC0034703
Knollwood Elementary School WWTP DEC 2 9 2023
Rowan County
NCDEQ/DWR/NPDES
To Whom It May Concern,
The NPDES permit for the wastewater treatment facilityat Knollwood ElementarySchool located at
t
3075 Shue Road, in Salisbury,North Carolina (Rowan County) is nearing its expiration on June 30,
2024. Thus, it is our desire to renew this permit by means of this NPDES permit renewal application
package. Since the last permit renewal,the facility has undergone (1)change. The original sampling
point was moved from a manhole 100 feet downstream of the dechlorination box to a new, shallower
manhole, six feet downstream of the dechlorination box. Additional documentation is attached.
You will find subsequent to this cover letter a copy of the NPDES Application Form 2A, a topographic
map, and a plant schematic. To conserve paper, copies of eDMRs, analytical data, and/or any further
documentation requested by the Division will be made available upon request.
It is our request that this package be processed and our permit to discharge treated wastewater be
renewed following the expiration of the current permit on June 30,2024.
Sincerely,
Madelyn Mills
Envirolink, Inc.
Cc: Jamie Durant, Rowan-Salisbury Schools
Robin Shoe, Rowan-Salisbury Schools
Joshua Powers, Envirolink, Inc.
Todd Robinson, Envirolink, Inc

North Carolina
Department of Environmental Quality Modified Application Form 2A
Division of Water Resources Revised March 2021
Modified Application
Form 2A
Minor Sewage Facilities < 0. 1 MGD
and No Pretreatment Program
NPDES Permitting Program RECEIVED
DEC 2 9 2023
NCDEQ/DWR/NPDES
Note: Complete this form if your facility is a MINOR new or existing publicly owned treatment works.

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
Form NC Department of Environmental Quality-Application for NPDES Permit to Discharge Wastewater
NPDES MINOR SEWAGE FACILITIES(Before completing this form,please read the instructions.Failure to follow
the instructions may result in denial of the application.)
SECTION 1. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS(40 CFR 122.21(j)(1)and(9))
1.1 Facility name
KNOLLWOOD ELEMENTARY SCHOOL
Mailing address(street or P.O.box)
PO BOX 2349
City or town State ZIP code
SALISBURY NC 28145
Contact name(first and last) Title Phone number Email address
JAMIE DURANT CHIEF OPERATIONS OFFICER [phone] [e-mail]
w Location address(street,route number,or other specific identifier) ❑ Same as mailing address
3075 SHUE ROAD
U-
City or town State ZIP code
SALISBURY NC 28147
1.2 Is this application for a facility that has yet to commence discharge?
❑ Yes 4 See instructions on data submission ❑ No
requirements for new dischargers.
1.3 Is applicant different from entity listed under Item 1.1 above?
❑ Yes El No 4 SKIP to Item 1.4.
Applicant name
ENVIROLINK,INC
a Applicant address(street or P.O.box)
773 SANFORD AVENUE
City or town State ZIP code
0
MOCKSVILLE NC 27028
Contact name(first and last) Title Phone number Email address
Q MADELYN MILLS COMPLIANCE COORDINATOR [phone] [e-mail]
a 1.4 Is the applicant the facility's owner,operator,or both?(Check only one response.)
El Owner El Operator El Both
1.5 To which entity should the NPDES permitting authority send correspondence?(Check only one response.)
El Facility El Applicant ElFacility and applicant
(they are one and the same)
1.6 Indicate below any existing environmental permits.(Check all that apply and print or type the corresponding permit
number for each.)
cu
Existing Environmental Permits
°' NPDES(discharges to surface ❑ RCRA(hazardous waste) ❑ UIC(underground injection
water) control)
E NC0034703
❑ PSD(air emissions) ❑ Nonattainment program(CM) ❑ NESHAPs(CM)
w
CD
N ❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section ❑ Other(specify)
404)
Page 1

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
1.7 Provide the collection system information requested below for the treatment works.
Municipality Population Collection System Type Ownership Status
Served Served (indicate percentage)
750 no %separate sanitary sewer 0 Own ❑ Maintain
d %combined storm and sanitary sewer 0 Own ❑ Maintain
c 0 Unknown 0 Own 0 Maintain
d
Cl, %separate sanitary sewer 0 Own 0 Maintain
w %combined storm and sanitary sewer 0 Own 0 Maintain
3 ❑ Unknown ❑ Own ❑ Maintain
a %separate sanitary sewer 0 Own 0 Maintain
a %combined stormand sanitarysewer ❑ Own 0 Maintain
v ❑ Unknown 0 Own 0 Maintain
E %separate sanitary sewer 0 Own 0 Maintain
>, %combined storm and sanitary sewer 0 Own ❑ Maintain
`" 0 Unknown 0 Own ❑ Maintain
Total 750
N Population
o Served
Separate Sanitary Sewer System Combined Storm and
Sanitary Sewer
Total percentage of each type of 100
sewer line(in miles)
Z' 1.8 Is the treatment works located in Indian Country?
c
o ❑ Yes El No
R1.9 Does the facility discharge to a receiving water that flows through Indian Country?
c ❑ Yes El No
1.10 Provide design and actual flow rates in the designated spaces. Design Flow Rate
0.011 mgd
w Annual Average Flow Rates(Actual)
atn
111 Two Years Ago Last Year This Year
c 3 0.0025 mgd 0.0025 mgd 0.002 mgd
0
'0 Li Daily Flow Rates(Actual)
CI Two Years Ago Last Year This Year
0.007 mgd 0.008 mgd 0.004 mgd
H 1.11 Provide the total number of effluent discharge points to waters of the State of North Carolina by type.
Total Number of Effluent Discharge Points by Type
'o w
d >. Combined Sewer Constructed
gm T Treated Effluent Untreated Effluent Overflows Bypasses Emergency
.0 .0 Overflows
U
H
6 1
Page 2

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
Outfalls Other Than to Waters of the State of North Carolina
1.12 Does the POTW discharge wastewater to basins,ponds,or other surface impoundments that do not have outlets
for discharge to waters of the State of North Carolina?
❑ Yes ❑✓ No 4 SKIP to Item 1.14.
1.13 Provide the location of each surface impoundment and associated discharge information in the table below.
Surface Impoundment Location and Discharge Data
Average Daily Volume Continuous or Intermittent
Location Discharged to Surface (check one)
Impoundment
❑ Continuous
gpd ❑ Intermittent
❑ Continuous
gpd 0 Intermittent
0 Continuous
gpd 0 Intermittent
2 1.14 Is wastewater applied to land?
❑ Yes ❑ No SKIP to Item 1.16.
c 1.15 Provide the land application site and discharge data requested below.
0 Land Application Site and Discharge Data
0
Average Daily Volume Continuous or
Location Size Applied Intermittent
(check one)
H acresgpd 0 Continuous
o ❑ Intermittent
acres d ❑ Continuous
o gp ❑ Intermittent
-o acres d 0 Continuous
gpd 0 Intermittent
° 1.16 Is effluent transported to another facility for treatment prior to discharge?
o ❑ Yes ❑✓ No 4 SKIP to Item 1.21.
1.17 Describe the means by which the effluent is transported(e.g.,tank truck,pipe).
1.18 Is the effluent transported by a party other than the applicant?
❑ Yes ❑ No 4 SKIP to Item 1.20.
1.19 Provide information on the transporter below.
Transporter Data
Entity name Mailing address(street or P.O.box)
City or town State ZIP code
Contact name(first and last) Title
Phone number Email address
Page 3

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
1.20 In the table below,indicate the name,address,contact information,NPDES number,and average daily flow rate of the
receiving facility.
Receiving Facility Data
Facility name Mailing address(street or P.O.box)
0
c
c City or town State ZIP code
0
vContact name(first and last) Title
0
d Phone number Email address
m
Tit
NPDES number of receiving facility(if any) ❑None Average daily flow rate mgd
CO
0 1.21 Is the wastewater disposed of in a manner other than those already mentioned in Items 1.14 through 1.21 that do
dnot have outlets to waters of the State of North Carolina(e.g.,underground percolation,underground injection)?
s ❑ Yes El No.4 SKIP to Item 1.23.
0
0 1.22 Provide information in the table below on these other disposal methods.
d Information on Other Disposal Methods
o Disposal Location of Size of Annual Average Continuous or Intermittent
c Method Disposal Site Disposal Site Daily Discharge (check one)
al Description Volume
cn
7 acres gpd 0 Continuous
3 0 Intermittent
o 0 Continuous
acres gpd 0 Intermittent
acresgpd ❑ Continuous
0 Intermittent
1.23 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(n)?(Check all that apply.
„ w Consult with your NPDES permitting authority to determine what information needs to be submitted and when.)
Cfa
Discharges into marine waters(CWA Water quality related effluent limitation(CWA Section
al w ❑ Section 301(h)) ❑ 302(b)(2))
✓❑ Not applicable
1.24 Are any operational or maintenance aspects(related to wastewater treatment and effluent quality)of the treatment works
the responsibility of a contractor?
✓❑ Yes ❑ No+SKIP to Section 2.
1.25 Provide location and contact information for each contractor in addition to a description of the contractor's operational
and maintenance responsibilities.
Contractor Information
Contractor 1 Contractor 2 Contractor 3
0 Contractor name
ENVIROLINK,INC
(company name)
o Mailing address 773 SANFORD AVENUE
(street or P.O.box)
City,state,and ZIP MOCKSVILLE,NC 27028
0 code
CU
c Contact name(first and MADELYN MILLS
c) last)
Phone number [phone]
Email address [e-mail]
Operational and Provides ORC,Backup ORC,
maintenance operation of the WWTP,
responsibilities of compliance sampling,and
contractor rnnnrti no
Page 4

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
SECTION 2.ADDITIONAL INFORMATION(40 CFR 122.21(j)(1)and(2))
Outfalls to Waters of the State of North Carolina
2.1 Does the treatment works have a design flow greater than or equal to 0.1 mgd?
o ❑ Yes ❑✓ No 4 SKIP to Section 3.
c 2.2 Provide the treatment works'current average daily volume of inflow Average Daily Volume of Inflow and Infiltration
R and infiltration.
gpd
Indicate the steps the facility is taking to minimize inflow and infiltration.
-o
0
0
2.3 Have you attached a topographic map to this application that contains all the required information?(See instructions for
R 0 specific requirements.)
0)
Q.
❑
Yes ❑ No
E 2.4 Have you attached a process flow diagram or schematic to this application that contains all the required information?
cE (See instructions for specific requirements.)
rn
L R
o ❑ Yes ❑ No
2.5 Are improvements to the facility scheduled?
❑ Yes ❑ No 4 SKIP to Section 3.
Briefly list and describe the scheduled improvements.
0
1.
c
a>
E
a>
2.
E
0 0
3.
C)
d
U)
4.
cl 2.6 Provide scheduled or actual dates of completion for improvements.
Scheduled or Actual Dates of Completion for Improvements
Affected Attainment of
d Scheduled Begin End Begin
Outfalls Operational
2 Improvement Construction Construction Discharge
(from above) (list
outf)I
number (MM/DD/YYYY) (MM/DD/YYYY) (MM/DD/YYYY) (MM/DD/YYYY)
a>
3 1.
a3
s
2.
3.
4.
2.7 Have appropriate permits/clearances concerning other federal/state requirements been obtained?Briefly explain your
response.
❑ Yes ❑ No ❑ None required or applicable
Explanation:
Page 5

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
SECTION 3.INFORMATION ON EFFLUENT DISCHARGES(40 CFR 122.21(j)(3)to(5))
3.1 Provide the following information for each outfall.(Attach additional sheets if you have more than three outfalls.)
Outfall Number o01 Outfall Number Outfall Number
State NORTH CAROLINA
o County ROWAN
o City or town SALISBURY
0
c Distance from shore ft. ft. ft.
s.
d Depth below surface ft. ft. ft.
0
Average daily flow rate mgd mgd mgd
1 II
Latitude 35° 37' 29" N ° " °
Longitude 80° 34' 22" W II '
3.2 Do any of the outfalls described under Item 3.1 have seasonal or periodic discharges?
R
o ❑ Yes E No 4 SKIP to Item 3.4.
a>
R 3.3 If so,provide the following information for each applicable outfall.
L
y Outfall Number Outfall Number Outfall Number
0
o Number of times per year
o discharge occurs
W
Average duration of each
o discharge(specify units)
c Average flow of each mgd mgd mgd
a) discharge
u) Months in which discharge
occurs
3.4 Are any of the outfalls listed under Item 3.1 equipped with a diffuser?
❑ Yes 0 No 4 SKIP to Item 3.6.
3.5 Briefly describe the diffuser type at each applicable outfall.
0.
Outfall Number Outfall Number Outfall Number
w
to
6
v> 3.6 Does the treatment works discharge or plan to discharge wastewater to waters of the State of North Carolina from
d = one or more discharge points?
❑ Yes ❑ No 4SKIP to Section 6.
Page 6

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
3.7 Provide the receiving water and related information(if known)for each outfall.
Outfall Number oot Outfall Number Outfall Number
Receiving water name LITTLE CREEK
Name of watershed,river,
00 or stream system YADKIN PEE-DEE
0- U.S.Soil Conservation
Service 14-digit watershed
c code
Name of state management/river basin YADKIN PEE-DEE RIVER BASIN
a)
U.S.Geological Survey
4) 8-digit hydrologic
cc cataloging unit code
Critical low flow(acute) cfs cfs cfs
Critical low flow(chronic) cfs cfs cfs
Total hardness at critical mg/L of mg/L of mg/L of
low flow CaCO3 CaCO3 CaCO3
3.8 Provide the following information describing the treatment provided for discharges from each outfall.
Outfall Number cot Outfall Number Outfall Number
Highest Level of 0 Primary 0 Primary 0 Primary
Treatment(check all that 0 Equivalent to 0 Equivalent to 0 Equivalent to
apply per outfall) secondary secondary secondary
0 Secondary 0 Secondary ❑ Secondary
❑ Advanced 0 Advanced 0 Advanced
❑ Other(specify) 0 Other(specify) 0 Other(specify)
c
0
'a Design Removal Rates by
0 Outfall
to
w
o BODs or CBOD5 % % %
c
m
E
1°i a TSS % %
H
❑Not applicable ❑ Not applicable 0 Not applicable
Phosphorus
0 Not applicable 0 Not applicable 0 Not applicable
Nitrogen %
Other(specify) 0 Not applicable 0 Not applicable 0 Not applicable
% %
Page 7

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
3.9 Describe the type of disinfection used for the effluent from each outfall in the table below.If disinfection varies by
season,describe below.
Chlorine(chlorine contact tank with tablet chlorinator and tablet de-chlorination)
as
0
= Outfall Number 001 Outfall Number Outfall Number
0
fl- Disinfection type Chlorine
to
d
c
• Seasons used All
Dechlorination used? ❑ Not applicable ❑ Not applicable ❑ Not applicable
El Yes ❑ Yes ❑ Yes
❑ No ❑ No ❑ No
3.10 Have you completed monitoring for all Table A parameters and attached the results to the application package?
El Yes ❑ No
3.11 Have you conducted any WET tests during the 4.5 years prior to the date of the application on any of the facility's
discharges or on any receiving water near the discharge points?
❑ Yes r❑ No 4 SKIP to Item 3.13.
3.12 Indicate the number of acute and chronic WET tests conducted since the last permit reissuance of the facility's
discharges by outfall number or of the receiving water near the discharge points.
Outfall Number Outfall Number Outfall Number
co Acute Chronic Acute Chronic Acute Chronic
R
as
Number of tests of discharge
water
Number of tests of receiving
water
3.14 Does the POTW use chlorine for disinfection,use chlorine elsewhere in the treatment process,or otherwise have
reasonable potential to discharge chlorine in its effluent?
El Yes 4 Complete Table B,including chlorine. ❑ No 4 Complete Table B,omitting chlorine.
3.15 Have you completed monitoring for all applicable Table B pollutants and attached the results to this application
package?
ElYes ❑ No
Have you completed monitoring for all applicable Table D pollutants required by your NPDES permitting authority and
3.18 attached the results to this application package?
ID Yes No additional sampling required by NPDES
permitting authority.
Page 8

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
3.19 Has the POTW conducted either(1)minimum of four quarterly WET tests for one year preceding this permit application
or(2)at least four annual WET tests in the past 4.5 years?
❑ Yes 0 No 4 Complete tests and Table E and SKIP to
Item 3.26.
3.20 Have you previously submitted the results of the above tests to your NPDES permitting authority?
ID Yes ❑ No 4 Provide results in Table E and SKIP to
Item 3.26.
3.21 Indicate the dates the data were submitted to your NPDES permitting authority and provide a summary of the results.
Date(s)Submitted(MM/DD/YYYY) Summary of Results
v
m
C
C
O
ciS 3.22 Regardless of how you provided your WET testing data to the NPDES permitting authority,did any of the tests result in
o toxicity?
❑ Yes 0 No 4 SKIP to Item 3.26.
2 3.23 Describe the cause(s)of the toxicity:
C
d
w
3.24 Has the treatment works conducted a toxicity reduction evaluation?
❑ Yes ElNo 4 SKIP to Item 3.26.
3.25 Provide details of any toxicity reduction evaluations conducted.
3.26 Have you completed Table E for all applicable outfalls and attached the results to the application package?
CI Yes ✓❑
Not applicable because previously submitted
information to the NPDES .ermittin. authori .
Page 9

NPDES Permit Number Facility Name Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
SECTION 6.CHECKLIST AND CERTIFICATION STATEMENT(40 CFR 122.22(a)and(d))
6.1 In Column 1 below,mark the sections of Form 2A that you have completed and are submitting with your application. For
each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority. Note that not
all applicants are required to provide attachments.
Column 1 Column 2
El Section 1:Basic Application
Information for All Applicants ❑ w/variance request(s) ❑ w/additional attachments
❑ Section 2:Additional 0 w/topographic map El wl process flow diagram
r
Information r❑ w/additional attachments
0 w/Table A ❑ w/Table D
❑ Section 3:Information on ✓❑ w/Table B ❑ w/additional attachments
Effluent Discharges
❑ w/Table C
CD
CO Section 4:Not Applicable
0
Section 5:Not Applicable
Section 6:Checklist and
co ❑ Certification Statement ❑ w/attachments
to
.Y 6.2 Certification Statement
0
a�
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted.Based on my inquiry of the person or persons who manage the system,or those persons directly responsible
for gathering the information,the information submitted is,to the best of my knowledge and belief,true,accurate,and
complete.I am aware that there are significant penalties for submitting false information,including the possibility of fine
and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Madelyn Mills Compliance Coordinator
Signature Date signed
12/20/2023
Page 10

NPDES Permit Number Facility Name Ouffall Number Modified Application Form 2A
NC0034703 Knollwood Elementary School 001 Modified March 2021
TABLE A.EFFLUENT PARAMETERS FOR ALL POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Methods (include
Value Units Value Units Sam s les units)
Biochemical oxygen demand
ip ML
o BODE or o CBODE 32.9 mg/L 10.09 mg/L 72 SM5210B-2011 <2.0 mg/L O MDL
resort one
Fecal coliform >2419.6 100/m1 12.439 100/m1 72 IDEXX Colilert 18 M• <1 MPN/11 O MDL
Design flow rate 0.008 MGD 0.006 MGD 77
pH(minimum) 6.1 SU
pH(maximum) 7.6 SU
Temperature(winter) 22.8 C 14.9 C 168
Temperature(summer) 27.4 C 21.6 C 160
Total suspended solids(TSS) 35.14 mg/L 11.5 mg/L 72 SM2540D-2011 <3.846 mg ID ML
MDL
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
Page 11

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
TABLE B.EFFLUENT PARAMETERS FOR ALL POTWS WITH A FLOW EQUAL TO OR GREATER THAN 0.1 MGD
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Methods include units
Value Units Value Units Samples Methods (
)
0 ML
Ammonia(as N) 32.82 mg/L 13.65 mg/L 72 SM4500NH3C-2011 <0.1 mg/L 0 MDL
Chlorine ❑ML
(total residual,TRC)2 36 u/gl 8.5 u/gl 146 4500 CI G-2011 <15 ug/L 2 MDL
o ML
Dissolved oxygen 0 MDL
ML
Nitrate/nitrite 49.6 mg/I 35.08 mg/I 6 SM4500fF2011 <0.1 mg/L p MDL
0 ML
Kjeldahl nitrogen 0 MDL
0 ML
Oil and grease 0 MDL
0 ML
Phosphorus 2.15 mg/I 1.26 mg/I 6 SM4500PE-2011 <1 mg/L O MDL
Total dissolved solids 0 ML
❑MDL
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
2 Facilities that do not use chlorine for disinfection,do not use chlorine elsewhere in the treatment process,and have no reasonable potential to discharge chlorine in their effluent are not
required to report data for chlorine.
EPA Form 3510-2A(Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method1 (include units)
Value Units Value Units Samples
Metals,Cyanide,and Total Phenols
Hardness(as CaCO3) ❑ML
❑MDL
Antimony,total recoverable ❑ML
❑MDL
Arsenic,total recoverable ❑ML
❑MDL
❑ML
Beryllium,total recoverable ❑MDL
Cadmium,total recoverable ❑ML
❑MDL
Chromium,total recoverable ❑ML
0 MDL
Copper,total recoverable ❑ML
0 MDL
Lead,total recoverable ❑ML
0 MDL
Mercury,total recoverable ❑ML
❑MDL
Nickel,total recoverable ❑ML
0 MDL
Selenium,total recoverable ❑ML
❑MDL
Silver,total recoverable ❑ML
0 MDL
Thallium,total recoverable ❑ML
0 MDL
Zinc,total recoverable ❑ML
0 MDL
Cyanide ❑ML
❑MDL
Total phenolic compounds ❑ML
❑MDL
Volatile Organic Compounds
Acrolein ❑ML
❑MDL
Acrylonitrile 0 ML
❑MDL
Benzene ❑ML
❑MDL
Bromoform ❑ML
❑MDL
EPA Form 3510-2A(Revised 3-19) Page 13

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
TABLE C. EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method1 (include units)
Value Units Value Units Samples
Carbon tetrachloride ❑ML
❑MDL
Chlorobenzene ❑ML
❑MDL
Chlorodibromomethane El ML❑MDL
Chloroethane ❑ML
❑MDL
0 ML
2-chloroethylvinyl ether 0 MDL
Chloroform 0 ML
❑MDL
Dichlorobromomethane ❑ML
❑MDL
1,1-dichloroethane 0 ML
❑MDL
1,2-dichloroethane ❑ML
❑MDL
0 ML
trans-1,2-dichloroethylene 0 MDL
0 ML
1,1-dichloroethylene 0 MDL
El ML
1,2-dichloropropane ❑MDL
0 ML
1,3-dichloropropylene ❑MDL
0 ML
Ethylbenzene 0 MDL
0 ML
Methyl bromide 0 MDL
0 ML
Methyl chloride 0 MDL
0 ML
Methylene chloride 0 MDL
1,1,2,2-tetrachloroethane 0 ML
❑MDL
0 ML
Tetrachloroethylene ❑MDL
Toluene ❑ML
❑MDL
1,1,1-trichloroethane 0 ML
❑MDL
1,1,2-trichloroethane I:ML
❑MDL
EPA Form 3510-2A(Revised 3-19) Page 14

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method1 (include units)
Value Units Value Units Samples
Trichloroethylene ❑ML
❑MDL
Vinyl chloride
❑ML
❑MDL
Acid-Extractable Compounds
p-chloro-m-cresol ❑ML
❑MDL
2-chlorophenol ❑ML
❑MDL
2,4-dichlorophenol ❑ML
❑MDL
2,4-dimethylphenol ❑ML
0 MDL
❑ML
4,6-dinitro-o-cresol ❑MDL
2,4-dinitrophenol ❑ML
❑MDL
2-nitrophenol
❑ML
❑MDL
4-nitrophenol ❑ML
❑MDL
Pentachlorophenol 0 ML
❑MDL
Phenol ❑ML
❑MDL
2,4,6-trichlorophenol ❑ML
❑MDL
Base-Neutral Compounds
❑ML
Acenaphthene ❑MDL
Acenaphthylene ❑ML
❑MDL
Anthracene ❑ML
❑MDL 1
Benzidine ❑ML
❑MDL
Benzo(a)anthracene 0 ML
0 MDL
Benzo(a)pyrene ❑ML
❑MDL
3,4-benzofluoranthene ❑ML
❑MDL
EPA Form 3510-2A(Revised 3-19) Page 15

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method1 (include units)
Value Units Value Units Samples
0 ML
Benzo(ghi)perylene ❑MDL
0 ML
Benzo(k)fluoranthene 0 MDL
0 ML
Bis(2-chloroethoxy)methane 0 MDL
0 ML
Bis(2-chloroethyl)ether 0 MDL
0 ML
Bis(2-chloroisopropyl)ether 0 MDL
0 ML
Bis(2-ethylhexyl)phthalate 0 MDL
0 ML
4-bromophenyl phenyl ether 0 MDL
0 ML
Butyl benzyl phthalate 0 MDL
0 ML
2-chloronaphthalene 0 MDL
0 ML
4-chlorophenyl phenyl ether 0 MDL
0 ML
Chrysene ❑MDL
0 ML
di-n-butyl phthalate 0 MDL
0 ML
di-n-octyl phthalate 0 MDL
0 ML
Dibenzo(a,h)anthracene 0 MDL
1,2-dichlorobenzene ❑ML
❑MDL
1,3-dichlorobenzene ❑ML
❑MDL
1,4-dichlorobenzene ❑ML
❑MDL
3,3-dichlorobenzidine ❑ML
❑MDL
Diethyl phthalate ❑ML
❑MDL
Dimethyl phthalate ❑ML
❑MDL
2,4-dinitrotoluene ❑ML
❑MDL
2,6-dinitrotoluene ❑ML
❑MDL
EPA Form 3510-2A(Revised 3-19) Page 16

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
TABLE C.EFFLUENT PARAMETERS FOR SELECTED POTWS
Maximum Daily Discharge Average Daily Discharge Analytical ML or MDL
Pollutant Number of Method1 (include units)
Value Units Value Units Samples
-
1,2-diphenylhydrazine ❑ML
❑MDL
0 ML
Fluoranthene _ ❑MDL
Fluorene ❑ML
o MDL
Hexachlorobenzene ❑ML
❑MDL
Hexachlorobutadiene ❑ML
❑MDL
Hexachlorocyclo-pentadiene ❑ML
0 MDL
Hexachloroethane ❑ML
❑MDL
Indeno(1,2,3-cd)pyrene ❑ML
❑MDL
lsophorone ❑ML
❑MDL
Naphthalene 0 ML
❑MDL
0 ML
Nitrobenzene o MDL
N-nitrosodi-n-propylamine ❑ML
❑MDL
N-nitrosodimethylamine ❑ML
0 MDL
0 ML
N-nitrosodiphenylamine ❑MDL
Phenanthrene ❑ML
❑MDL
Pyrene ❑ML
0 MDL
0 ML
1,2,4-trichlorobenzene ❑MDL
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR Chapter I,Subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2A(Revised 3-19) Page 17

NPDES Permit Number Facility Name Outfall Number Modified Application Form 2A
NC0034703 Knollwood Elementary School Modified March 2021
TABLE D.ADDITIONAL POLLUTANTS AS REQUIRED BY NPDES PERMITTING AUTHORITY
Pollutant Maximum Daily Discharge Average Daily Dischar a Analytical ML or MDL
(list) Value Units Value Units Number of Methods (include units)
Samples
❑ No additional sampling is required by NPDES permitting authority.
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
0 ML
❑MDL
❑ML
❑MDL
❑ML
❑MDL
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or required
under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
Page 18