Appendix 4

Exactly as extracted, unformatted — for checking against the original. The readable version is easier to read.

Oct 18, 2021
VIA ELECTRONIC MAIL
Mr. Clifford Matthews Jr, Public Works Director
Town of Centreville
101 Lawyer’s Row
Centreville, Maryland, 21617
Re: Centreville Wastewater treatment Plant
State Discharge Permit 20-DP-0116; NPDES Permit MD0020834
Dear Mr. Matthews:
Enclosed is the above discharge permit with the effective date indicated on the cover page. The
permittee is responsible for complying with all permit conditions. You are therefore advised to
read the permit carefully and become thoroughly familiar with the requirements in order to
maintain compliance with the permit.
Your facility has been approved by MDE to electronically submit Discharge Monitoring Report
(DMR) through NetDMR. Therefore you are required to submit monthly DMRs by the 28th of
the following month and all other documents as listed in the discharge permit electronically
through NetDMR. Should you encounter problems in electronic submission for any month,
please consult the MDE’s Compliance Program by calling at (410) 537-3510 to avoid missing
the deadline for submission of the above stated documents.
You will also find enclosed a copy of the Federal Register published on May 19, 2021 with final
rule to update the Code of Federal Regulations (CFR), Title 40, Part 136 - "Guidelines
Establishing Test Procedures for the Analysis of Pollutants" which is in effect from July 19,
2021. For future reference, please be advised to visit the U.S Government Publishing Office
(USGPO) website https://mdewwp.page.link/40CFR136 (this link is case-sensitive) regularly
to obtain updated guidelines. Unless otherwise specified, the most updated guidelines in 40 CFR
Part 136 are required to be used for the analyses of pollutants specified in this permit.
In addition, we have enclosed a copy of the table of the Minimum Monitoring Requirements.

Mr. Clifford Matthews, Jr
Page 2
If you have any questions, please contact Mahendra Chawla, Project Manager, Surface
Discharge Permits Division, at (410) 537-3679.
Sincerely,
Heather W. Barthel for (Oct 18, 2021 14:43 EDT)
D. Lee Currey, Director
Water and Science Administration
Enclosures
cc: Ms. Rebecca K. Crane, USEPA (electronic copy)
Mr. John E. Nickerson, Director, Environmental Health, Queen Anne’s County County
Health Department (electronic copy)
Mr. Paul Ferreri, Eastern Inspection Division Chief electronic copy)
Mr. Matt Rowe (electronic copy)
Mr. Dennis Rasmussen (electronic copy)

D I S C H A R G E P E R M I T
NPDES Discharge State Discharge
Permit Number: MD0020834 Permit Number: 20-DP-0116
Effective Expiration
Date: 12/01/2021 Date: 11/30/2026
Modification (Not Reapplication Due
Date: applicable) Date: 11/30/2025
Pursuant to the provisions of Title 9 of the Environment Article, Annotated Code of Maryland, and
regulations promulgated thereunder, and the provisions of the Clean Water Act, 33 U.S.C. Section 1251 et
seq., and implementing regulations 40 CFR Parts 122, 123, 124 and 125, the Department of the
Environment hereby establishes conditions and requirements pertinent to the wastewater treatment plant
and collection system and authorizes:
Town of Centreville
101 Lawyers Row
Centreville, Maryland 21617
TO DISCHARGE FROM: Centreville Wastewater Treatment Plant
LOCATED AT: 116 Johnstown Lane
Centreville, Queen Anne’s County
Maryland 21617
THROUGH OUTFALL: 001A (WWTP Effluent)
TO: Gravel Run, designated as Use – I waters, which is protected for water
contact recreation and nontidal warmwater aquatic life; in accordance with
the following special and general conditions and a map incorporated herein
and made a part hereof.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 2 of 29
I. DEFINITIONS
A. “Ambient temperature” of the effluent receiving stream means the water temperature that is
not impacted by a point source discharge, and it shall be measured in areas of the stream
representative of typical or average conditions of the stream segment in question.
B. “Bypass” means the intentional diversion of pollutants from any portion of a treatment or
collection facility.
C. “BOD (Biochemical Oxygen Demand)” means the amount of oxygen consumed in a standard
5
BOD test without the use of a nitrification inhibitor at 20 degree centigrade on an
5
unfiltered sample.
D. “Clean Water Act” means the Federal Water Pollution Control Act, as amended, 33 U.S.C.
Section 1251 et seq.
E. “CFR” means the Code of Federal Regulations.
F. “COMAR” means the Code of Maryland Regulations.
G. “Department” means the Maryland Department of the Environment (MDE).
H. Discharge Limits
1. “Daily maximum (or minimum)" limitation means the highest (or lowest) allowable
the daily averages in a calendar month. The daily discharge expressed as
concentration (in mg/l) shall be calculated by dividing total of measurement
readings by number of sample collected during a calendar day or any 24-hour
period that reasonably represents the calendar day for purposes of sampling. The
daily discharge expressed as loading rate (in pounds/day) is calculated by using
this formula {daily average concentration (mg/l) x the same day total flow (in
million gallons) x 8.34}.
2. “Weekly average (maximum or minimum)" limitation means the highest or lowest
allowable average of "daily discharges'' over a calendar week, calculated as the
sum of all "daily discharges'' measured during a calendar week divided by the
number of "daily discharges'' measured during that week. Each of the following 7-
day periods is defined as a calendar week: Week 1 is Days 1 - 7 of the month;
Week 2 is Days 8 - 14; Week 3 is Days 15 - 21; and Week 4 is Days 22 - 28. For
weekly average maximum, if the "daily discharge" on days 29, 30 or 31 exceeds
the "weekly average" discharge limitation, MDE may elect to evaluate the last 7
days of the month as Week 4 instead of Days 22 - 28. For weekly average
minimum, if the "daily discharge" on days 29, 30 or 31 is lower than the "weekly
average" discharge limitation, MDE may elect to evaluate the last 7 days of the
month as Week 4 instead of Days 22 - 28.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 3 of 29
I. DEFINITIONS
3. “Monthly average maximum (or minimum)” limitation means the highest (or
lowest) allowable monthly average concentration or waste load of a parameter
over a calendar month. The monthly average is calculated as the sum of all daily
discharges for a parameter sampled and/or measured in that calendar month
divided by the number of days on which monitoring was performed.
4. “Minimum or maximum” limit means the lowest or highest allowable value
measured during a calendar day or any 24-hour period that reasonably represents
the calendar day for purposes of sampling.
5. “Monthly loading rate (in pounds/month)” means the total load of a parameter
calculated for that calendar month. It is calculated using this formula {(monthly
average concentration in mg/l) x (Total monthly flow in Million Gallons) x 8.34}.
6. “Year-to-date cumulative load (pounds)” value means cumulative load of a
pollutant in the effluent through each reporting month in a calendar year. It is
calculated as a sum of the individual total monthly loads from January through the
reporting month in a calendar year.
7. “Annual Maximum Loading Rate (in pounds/year)” limit means the maximum
load allowed for a pollutant in the effluent to be discharged in a calendar year.
The Year-to-date cumulative load (as defined above in Definition I.H.6) shall be
used to determine the compliance status of this requirement.
8. “Monthly log mean (Monthly geometric mean)” limit means the highest allowable
value calculated as the logarithmic or geometric mean of all samples taken in the
calendar month. The geometric mean is the antilogarithm of the mean of the
logarithms.
I. Discharge Monitoring
1. “Composite sample” means a combination of individual samples obtained at
hourly or smaller intervals over a time period. Either the volume of each
individual sample is proportional to discharge flow rates or the sampling interval
(for constant volume samples) is proportional to the flow rates over the time
period used to produce the composite.
2. “Grab sample” means an individual sample collected over a period of time not
exceeding 15 minutes.
3. “Estimated flow” value means a calculated volume or discharge rate which is
based on a technical evaluation of the sources contributing to the discharge
including, but not limited to, pump capabilities, water meters, and batch discharge
volumes.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 4 of 29
I. DEFINITIONS
4. “Measured flow” value means any method of liquid volume measurement, the
accuracy of which has been previously demonstrated in engineering practice, or
for which a relationship to absolute volume has been obtained.
5. “Recorded flow” means any method of providing a permanent, continuous record
of flow including, but not limited to, circular and strip charts.
6. “Monthly average flow” means the total flow for a calendar month divided by the
number of days in the same month.
J. "i-s (immersion stabilization)" means a calibrated device immersed in the effluent or stream,
as applicable, until the temperature reading is stabilized.
K. “NetDMR” means a nationally-available electronic reporting tool, initially designed by states
and later adapted for national use by EPA, which can be used by NPDES-regulated
facilities to submit discharge monitoring reports (DMRs) electronically to EPA through a
secure Internet application over the National Environmental Information Exchange
Network (NEIEN). EPA can then share this information with authorized states, tribes,
and territories.
L. “NPDES (National Pollutant Discharge Elimination System)” means the national system for
issuing permits as designated by the Clean Water Act.
M. “Nondetectable Level” for total residual chlorine means a residual concentration of less than
0.10 mg/l as determined using either the DPD titrimetric or chlorimetric method or an
alternative method approved by the Department.
N. “Outfall” means the location where the effluent is discharged into the receiving waters.
O. “Overflow” means any loss of wastewater or discharge from a sanitary sewer system,
combined sewer system or wastewater treatment plant bypass (as defined in I.B) which
results in the direct or potential discharge of raw, partially treated wastewater into the
waters of the State.
P. “Permittee” means an individual or organization holding the discharge permit issued by the
Department.
Q. “POTW” means a publicly owned treatment works.
R. “Sampling Point” means the effluent sampling location in the outfall line(s) downstream from
the last addition point or as otherwise specified.
S. “Sanitary Sewer Overflow (SSO)” means a discharge of untreated or partially treated sewage
from a separate sewer system before the sanitary wastewater reaches the headworks of a
wastewater treatment facility, pursuant to COMAR 26.08.10.01.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 5 of 29
I. DEFINITIONS
T. “Secondary Treatment” means the treatment of sewage to produce effluent equal to or better
than the following quality, except as provided for 40 CFR §133.103, or paragraphs (d),
(e) or (f) of the same section:
1. Five-day biochemical oxygen demand (BOD ):
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a. 30 milligrams/liter – average for a 30-day period;
b. 45 milligrams/liter – average for a 7-day period;
c. The 30-day average percent removal shall not be less than 85 percent.
2. Total Suspended Solids (TSS):
a. 30 milligrams/liter – average for a 30-day period;
b. 45 milligrams/liter – average for a 7-day period;
c. The 30-day average percent removal shall not be less than 85 percent.
3. Bacterial Control: As required to meet water quality standards.
U. “Significant Industrial User (SIU)” is defined as any industrial user (IU) that:
1. is subject to national categorical standards; and
2. any other IU that:
a. discharges an average of 25,000 gallons per day or more of process
wastewater (excluding sanitary, non-contact cooling and boiler blowdown
wastewater); or
b. contributes a process wastestream that makes up 5% or more of the average
dry weather hydraulic or organic capacity of the POTW; or
c. is designated as such by the POTW on the basis that the IU has a
reasonable potential for adversely affecting the POTW's operation or for
violating any pretreatment standard or requirement; or
d. is found by the POTW, the Department, or the Environmental Protection
Agency (EPA) to have significant impact either individually or in
combination with other contributing industries to the POTW, on the quality
of the sludge, the POTW's effluent quality, or air emissions generated by
the system.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 6 of 29
I. DEFINITIONS
V. “TKN (Total Kjeldahl Nitrogen)” means organic nitrogen plus ammonia nitrogen.
W. “TSS (Total Suspended Solids)” means the residue retained on the filter by an analysis
done in accordance with Standard Methods or other approved methods.
X. “Upset” means the exceptional incident in which there is unintentional and temporary
noncompliance with technology-based permit effluent limitations because of factors
beyond the reasonable control of the permittee. An upset does not include noncompliance
to the extent caused by operational error, improperly designed treatment facilities,
inadequate treatment facilities, lack of preventive maintenance, or careless or improper
operation

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 7 of 29
IIII.. SSPPEECCIIAALL CCOONNDDIITTIIOONNSS
A. Effluent Limitations, Outfall 001A (1) (2) (3) (4)(21)
These limitations shall be applicable from December 1 through March 31 only. No stream discharge is permitted
from April 1 through November 30 from Outfall 001A. The rest of the year, the wastewater will be disposed of by
spray irrigation to the ground waters of the State, as regulated by Groundwater Discharge Permit No. 14-DP-3323.
The quality of the effluent discharged by the facility at a discharge point location (Outfall 001A) shall be limited at
all times as shown below:
Maximum Effluent Limits, except as noted
Monthly
Average Weekly Daily Monthly Weekly Daily
Loading Average Average Average Average Average
Effluent Characteristics
Rate, Loading Rate, Loading Rate, Concentration, Concentration, Concentration,
Pounds/day Pounds/day Pounds/day mg/l mg/l mg/l
BOD (12/1 to 3/31) 130 190 N/A 28 42
5
N/A
BOD , Percent Removal (8) 85 % minimum monthly average
5
TSS (12/1-3/31) 130 190 N/A 28 42 N/A
TSS, Percent Removal (8) 85 % minimum monthly average
Maximum Effluent Limits
Total Monthly Annual Maximum Monthly Average
Loading Rate, Loading Rate, Concentration,
Effluent Characteristics Pounds/Month Pounds/Season mg/l
Total Phosphorus-P(4) (5)(6) 140 457 1.0
(12/1 – 3/ 31)
Total Nitrogen-N(4(5(6) 750 3,004 5. 5
(12/1- 3/31)
Effluent Limits
Effluent Characteristics Maximum Minimum
E. coli 116 MPN/ 100 ml monthly geometric mean N/A
value
Total Residual Chlorine (See footnote – 7) N/A
pH 8.5 6.5
Dissolved Oxygen (All Year) N/A 5.0 mg/l at anytime

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 8 of 29
IIII.. SSPPEECCIIAALL CCOONNDDIITTIIOONNSS
A. Effluent Limitations, Continued
An annual average flow of 0.542 million gallons per day (mgd) was used in waste allocation calculations
(expressed as waste loading rate limit), and this unit shall be used when reporting on the Discharge Monitoring
Report (DMR) as required by General Condition III.A.2. Notification is to be provided to the Department at least
180 days before the annual average flow is expected to exceed this flow level. If a permit modification is required,
the Department will initiate the public participation NPDES process. Because this facility is authorized to discharge
only 4 months per year, the permitted flow is equivalent to a minor facility.
Footnotes for effluent limitations:
(1) When this permit is renewed, the new limitations may not be equal to the above limitations. There shall be no
discharge of floating solids or visible foam other than trace amounts.
(2) The permit may also be reopened in accordance with the requirements of MDE's Watershed Permitting Plan under
which all discharge permits in a watershed are issued the same year.
(3) The specific designated use of Corsica River of the Lower Chester River Mesohaline segment is Use II – Support of
Estuarine and Marine Aquatic Life and Shellfish Harvesting. The Maryland Department of the Environment (MDE)
has identified the waters of the Corsica River of the Lower Chester River Mesohaline segment on the State’s
Integrated Report as impaired by the following pollutants (listing year and Integrated Report Assessment Unit
Identification in parentheses): total suspended solids (1996; MD-CHSMH), nutrients (1996; MD-CHSMH), fecal
coliform (1996; MD-CHSMH-Corsica_River), and polychlorinated biphenyls (PCBs) in fish tissue (2002; MD-
CHSMH-02130507) and impacts to biological communities (2004; MD-CHSMH). Nutrients, fecal coliform, and
PCB TMDLs for the restricted shellfish harvesting portion of the Corsica River were approved by the US EPA in
2000, 2005, and 2011 respectively. This permit is in conformance with these TMDLs and the “Chesapeake Bay
TMDL for Nitrogen, Phosphorus, and Sediment” established on December 29, 2010. When TMDLs for other
remaining parameters are completed, limits may be imposed, after the public participation process, to incorporate any
TMDL requirements.
(4) The loading caps for the Centreville WWTP for the seasonal stream discharge from December 1 through March 31,
equal to 3,004 pounds for TN and 457 pounds for TP. The permittee shall also comply with the monthly loading cap
limits of 750 lbs/month and 140 lbs/months for TN and TP respectively. The first exceedance of the permit limit
shall be counted and reported as daily exceedances beginning from the first exceedance, determined to the nearest
day, through March 31. In addition, after any such exceedance, the permittee shall demonstrate to the Department's
satisfaction that the facility is optimizing its nutrient removal capability, and neither the arrival of the next season
(December 1 thru March 31) nor the issuance of a permit renewal during a period of noncompliance shall obviate
continuance of any noncompliance status related to treatment optimization requirements.
(5) The current plant operates the Biological Nutrient Removal (BNR) process on a year round basis and the Town is also
authorized under groundwater permit GW 14-DP-3323 to operate the spray irrigation system 365 days a year.
Consequently, the level of nutrient control that is achieved by the combined surface water and ground water systems is
equivalent to Enhanced Nutrient Removal (ENR) level treatment and an ENR upgrade at this plant is not required.
(6) The permittee may request that the permit be reopened and modified to include nutrient trading consistent with the
most current “Maryland Policy for Nutrient cap Management and Trading in Maryland’s Chesapeake Bay
Watershed” in effect at that time.
(7) Total residual chlorine limitation of the nondetectable level shall be applicable, when chlorine or any chlorine-
containing compound is used in any treatment process(es), including but not limited to disinfection, that could become
a potential constituent of the effluent discharged from the Centreville WWTP. The wastewater shall be dechlorinated
to reduce effluent total residual chlorine concentration to the nondetectable level (See definition I.M).
(8) In accordance with 40CFR §133.102, the 30-day average percent removal for BOD and TSS shall not be less than 85
5
(eighty-five) percent as the minimum level of effluent quality attainable by the secondary treatment. Refer to the
footnotes 22 and 23 for further details for calculations and reporting requirements toward compliance to the BOD
5
and TSS percent removal effluent limitations (See Definition I.T).

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 9 of 29
IIII.. SSPPEECCIIAALL CCOONNDDIITTIIOONNSS
B. (1) (a) Minimum Monitoring Requirements(21):
The effluent characteristics listed below in Table B shall be monitored at the sampling point (Definition I.R). If the
sampling point is other than the outfall 001A, the permittee shall ensure that the effluent samples taken at the above
stated sampling point are representative of the effluent quality discharged at the Outfall 001A.
Measurement
Effluent CMhoanriatcotreirnigst Pices Monitoring Period Frequency Sample Type
BOD (9)(19) All Year Two per week 24-hour composite
5
Total Suspended Solids (9)(19) All Year Two per week 24-hour composite
BOD , Percent Removed(9)((22)(23) All Year One per month Calculated
5
TSS, Percent Removed (9)(22)(23) All Year One per month Calculated
TKN (9)(10)(11)(12)(19) All Year Two per week 24-hour composite
Total Ammonia Nitrogen as N All Year Two per week 24-hour composite
(9)(10)(11)(12)(19)
Total Phosphorus as P (9)(11)(13)(19) All Year Two per week 24-hour composite
Total Nitrogen as N (9)(12)(13)(19) All Year Two per week Calculated
(Nitrite + Nitrate) as N (9)(10)(11)(12)(19) All Year Two per week 24-hour composite
Organic Nitrogen as N (9)(10)(12)(19) All Year Two per week Calculated
Orthophosphate as P (9)(10)(11)(19) All Year Two per week 24-hour composite
E. coli (9)(19) All Year Two per week Grab
Total Residual Chlorine (9)(14)(15) All Year Two per day Grab
Dissolved Oxygen (9)(15) All Year Two per day Grab
pH (9)(15) All Year Two per day Grab
Flow (9)(16)(17)(20) All Year Continuous Recorded
Total Flow (9)(18)(20) All Year Monthly Calculated

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 10 of 29
II. SPECIAL CONDITIONS
B. (1) (b) Raw Wastewater Influent at Sampling Point 101A:
The quality of the wastewater influent entering the Centreville WWTP shall be monitored at Influent Chamber
All the times as shown below:
_______________________________________________________________________________________
Wastewater Influent Monitoring Period Measurement Frequency Sample Type
Characteristics
BOD (9)(22)(23) All Year Two per month Grab
5
Total Suspended Solids (9)(22)(23) All Year Two per month Grab
_________________________________________________________________________________________
B. Minimum Monitoring Requirements, continued:
Footnotes for the monitoring requirements (B)(1)(a) and (B (1)(b):
(9) "STORET" (short for STOrage and RETrieval) is a widely-used repository for water quality data reporting
and monitoring. The STORET codes for the effluent characteristics described as limitations and/or
monitoring requirements are: BOD (00310), BOD percent removed (81010), Total Suspended Solids
5 5
(00530), Total Suspended Solids percent removed (81011), TKN (00625), Total Ammonia Nitrogen as N
(00610), Total Phosphorus as P (00665), Total Nitrogen as N (00600), (Nitrite + Nitrate) as N (00630),
Organic Nitrogen as N (00605), Orthophosphate as P (04175), Fecal Coliform (74055), E. Coli (51040), Total
Residual Chlorine (50060), Dissolved Oxygen (00300), pH (00400), Flow (50050), and Total monthly flow
(82220)
(10) This parameter (without effluent limitations) must be monitored, and it shall be reported on the Monthly
Operating Report (MOR) as individual results and on the Discharge Monitoring Report as monthly average
concentrations.
(11) The monitoring of total phosphorus, total ammonia nitrogen, TKN, (nitrite + nitrate)-N and orthophosphate
shall be two per week 24 hour composite samplings.
(12) Total nitrogen as N (in mg/l) is a calculated parameter as the sum of individual results for total ammonia
nitrogen as N, organic nitrogen as N and (nitrite + nitrate) as N. Total Kjeldahl Nitrogen (TKN) is defined as
the total concentration of organic nitrogen and ammonia as N. All nitrogen species must be sampled at the
same day. The monitoring result for organic nitrogen may be calculated through the subtraction of the total
Ammonia as N monitoring result from the result of TKN sample taken at the same day.
(13) The permittee shall also calculate and report on the DMR the TN and TP total monthly loads (Definition
I.H.5) plus seasonal cumulative December 1 thru March 31loads (Definition I.H.6) for the outfall- 001A.
(14) The Minimum monitoring requirements of Two per day-grab samplings for total residual chlorine shall be
applicable, when chlorine or any chlorine compound is used in any treatment process(es), including but not
limited to disinfection, that could become a potential constituent of the effluent discharged from the
Centreville WWTP. The minimum level (quantification level) for total residual chlorine is 0.10 mg/l. The
permittee may report all results below the minimum level as <0.10 mg/l. All results reported below the
minimum level shall be considered in compliance.
(15) Samples for these parameters (total residual chlorine, pH and dissolved oxygen) shall be taken at intervals
evenly distributed throughout the staffed period each day to comply with the General Condition III.A.1 for the
representative sampling requirements.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 11 of 29
II. SPECIAL CONDITIONS
(16) Flows shall be reported in million gallons per day (mgd) to at least the nearest 1,000 gallons per day.
(Example: A flow of 524,699 gallons per day shall be reported as 0.525 mgd.). For each calendar month,
flows shall be reported on the MOR as daily individual results and on the DMR as monthly average (mgd)
and daily maximum (mgd).
(17) Continuous electronic flow measurement and recording which can produce a permanent record are acceptable
to the Department.
(18) Total monthly flow is a calculated parameter equal to sum of the daily flow results in a calendar month. It
shall be reported on the monthly DMR as Total monthly flow in million gallons (MG) to at least the nearest
1,000 gallons. (Example: A flow of 15,524,699 gallons shall be reported as 1.53 MG).
(19) The permittee shall distribute the timing for effluent sampling with minimum of 48-hour apart for two per
week monitoring frequencies. The 48 hours interval for two per week sampling shall be defined as the period
between the starting times of the two consecutive effluent sample collections for the same effluent parameter.
(20) Effluent flow to outfall 001A and to the spray irrigation system shall be measured and reported year round on
the monthly DMR reports.
(21) See General Condition III.A.2.a.ii.
(22) The BOD and TSS in the raw wastewater influent and effluent shall be sampled on the same day. The
5
measurements shall be utilized to calculate the BOD and TSS percent removed using the formula listed
5
below in the footnote 23, and the results shall be used to complying with the Percent removal limits of BOD
5
and TSS (Special Condition II.A).
Upon the effective date of the discharge permit, if the DMR records from the last 12 months indicate the
average removal efficiencies for these pollutants at the facility are significantly higher than the required 85%,
the permittee may petition for performance – based monitoring frequency reduction for BOD and TSS in the
5
raw wastewater influent.
(23) At the end of each calendar month, the monthly percent (%) of the parameter (BOD and TSS) removed shall
5
be calculated using the following formula:
Monthly Percent (%) of Parameter Removed = ((A-B)/A) x 100
Where:
A = Monthly Average Concentration of Parameter in Influent in mg/l
B = Monthly Average Concentration of Parameter in Effluent in mg/l

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 12 of 29
II. SPECIAL CONDITIONS
C. Wastewater Capacity Management
The permittee shall report the total cumulative flow for the each calendar year for the above
referenced facility. The total cumulative flow shall be reported in million gallons for the entire
calendar year to the nearest ten thousand gallons. The annual total cumulative flow determination
shall be provided to the Department using NetDMR no later than January 28th of the following
year.
Because the most recent three-year average flow for this facility is over 80% of its design
capacity, unless it has already been submitted, a Wastewater Capacity Management Plan (WCMP)
must be submitted to the Department using NetDMR no later than 90 days of the issuance date of
this discharge permit.
In addition, the permittee shall also submit a “Wastewater Flow Capacity Report (WFCR)” and
“worksheet for WFCR” for the previous calendar year to the Department using NetDMR tool no
later than January 28th of each year. If the permittee has not previously submitted the WCMP or the
annual WFCR, the first WFCR and “worksheets (Style #1 and #2) for WFCR” shall be submitted
within 90 days from the effective date of this permit. The permittee can obtain the WCMP guidance
document and forms from the Department’s web site links listed below:
(a) https://mdewwp.page.link/CMPGuidance for WCMP guidance document,
(b) https://mdewwp.page.link/CMPFlowCap for WFCR,
(c) https://mdewwp.page.link/CMPws1 for WFCR’s Worksheet # 1, and
(d) https://mdewwp.page.link/CMPws2 for WFCR’s Worksheet # 2 (these links are case-
sensitive).
If the permittee prefers to provide the above documents in hard copies, they shall be provided to
the Department postmarked by January 28th of the following year to the address below:
Attention: Calendar Year Total Cumulative Flow
WSA – Wastewater Discharge Permits Program
Maryland Department of the Environment
1800 Washington Boulevard, STE-455
Baltimore, MD 21230-1708
The permittee is advised to notify the Department at the above address immediately upon
electronic submission of reports through NetDMR tool.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 13 of 29
II. SPECIAL CONDITIONS
D. Influent Restriction
1. The permittee is not authorized to receive the discharge of any type or quantity of substances which
may cause interference with the operation of the treatment works. The permittee is required to
notify the Pretreatment Section of the Department, in writing, prior to allowing:
a. Any new introduction of pollutants into the treatment works from an indirect discharger which
would be subject to Section 301 or 306 of the Clean Water Act and COMAR 26.08.08 if it were
directly discharging those pollutants; and
b. Any substantial change in the volume or character of pollutants being introduced into the
treatment works by a source at the time of issuance of this permit.
2. Adequate notice shall include information on (i) the quality, quantity and frequency of wastewater
introduced into the treatment works, and (ii) any anticipated impact of the change on the quantity or
quality of effluent to be discharged from the treatment works. The permittee shall also maintain an
updated list of indirect dischargers which shall be available upon the request of the Department.
Under no circumstances shall the permittee allow introduction of the following wastes into the
waste treatment system:
a. Pollutants which cause pass through or interference;
b. Pollutants which create a fire hazard or explosion hazard in the sewerage system, including,
but not limited to waste streams with a closed cup flashpoint of less than 140 degrees
Fahrenheit or 60 degrees Centigrade using the test methods specified in 40 CFR 261.21;
c. Pollutants which will cause corrosive structural damage to the sewerage system; but in no
case, discharges with pH less than 5.0, unless the works is specifically designed to
accommodate such discharges;
d. Solid or viscous pollutants in amounts which will cause obstruction to the flow in the
sewerage system resulting in interference;
e Any pollutant, including oxygen demanding pollutants (BOD, etc.) released in a discharge at a
flow rate and/or pollutant concentration which will cause interference with the treatment
plant;
f. Heat in amounts which will inhibit biological activity in the treatment plant resulting in
interference; but in no case, heat in such quantities that the temperature at the treatment plant
exceeds 90 degrees Fahrenheit (32 degrees Centigrade) unless the Pretreatment Section of the
Department, upon request of the permittee, approves alternate temperature limits;
g. Pollutants which result in the presence of toxic gases, vapors or fumes within the sewerage
system in a quantity that may cause acute worker health and safety problems; and
h. Any trucked or hauled wastewater is prohibited, except for (1) domestic septage from within
the service area, (2) wastewater from within the collection system or within the wastewater
treatment works due to blockage, breaks, or malfunction in the system, (3) drinking water
plant wastewater located from within the service area, or, (4) other sources specifically
authorized by the Department. Prior to the acceptance of any trucked waste other than those
listed in this section, the permittee must make an official written request and, if approved by
the Department, must follow the conditions specified in permit requirements which may be
modified or rescinded at the discretion of the Department for any reason.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 14 of 29
II. SPECIAL CONDITIONS
E. Protection of Water Quality
It is a violation of this permit to discharge any substance not otherwise listed under the permit's
"Effluent Limitations and Monitoring Requirements" special conditions at a level which would
cause or contribute to any exceedance of the numerical water quality standards in COMAR
26.08.02.03 unless the level and the substance were disclosed in writing in the permit application
prior to the issuance of the permit. If a discharge regulated by this permit causes or contributes to
an exceedance of the water quality standards in COMAR 26.08.02.03, including but not limited to
the general water quality standards, or if the discharge includes a pollutant that was not disclosed
or addressed in the public record for the permit determination, the Department is authorized to
modify, suspend or revoke this permit or take enforcement action to address unlawful discharges
of pollutants.
F. Reapplication for a Permit
No later than12 months before the expiration date of this permit, unless permission for a later date
has been granted by the Department, the permittee shall submit a new application for a permit or
notify the Department of the intent to cease discharging by the expiration date. In the event that a
timely and complete reapplication has been submitted and the Department is unable, through no
fault of the permittee, to issue a new permit before the expiration date of this permit, the terms
and conditions of this permit continue and remain fully effective and enforceable. The renewal
application is required by that date in accordance with the requirements of MDE's Watershed
Permitting Plan under which all discharge permits in a watershed should be issued in the same
year.
G. Wastewater Discharges to Groundwater
This permit does not authorize the permittee to discharge any type or quantity of the wastewater
to the groundwater of the State. The permittee must make every effort to prevent any type of
leakage or discharges to the groundwater system from the wastewater treatment lagoon(s) and/or
other conveyance system.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 15 of 29
III. GENERAL CONDITIONS
A. Monitoring and Reporting
1. Representative Sampling
Samples and measurements shall be taken at times that are representative of the
quantity and quality of the discharge, and at evenly spaced intervals.
2. Monthly Monitoring Results
a. i. Discharge Monitoring Reports
Monitoring results obtained during each calendar month shall be
summarized and submitted electronically using the NetDMR tool.
Results shall be submitted to the Department via NetDMR no later than
the 28th of the month following the end of the reporting month.
ii. Submittal of NetDMR and Monthly Operating Report forms are also
required during the months of April 1 through November 30. If a
discharge to surface waters occurs during the non-permitted months of
April 1 through November 30, the facility is required to notify the MDE
of the noncompliance within 24 hours via telephone. In addition, a five-
day –letter describing in detail the non-complying discharge is to follow.
Sampling results for the effluent characteristics listed in Special
Condition II.B shall also be submitted to MDE for the non-complying
discharge.
b. Monthly Operating Reports (MOR)
The permittee shall submit monthly operating reports on a form
acceptable to the Compliance Program. For each calendar month, the
permittee shall submit to the Department a signed original of the MOR
as an attachment to Copy of Record (COR) via NetDMR in electronic
format concurrently with the Discharge Monitoring Report submission
postmarked no later than the 28th day of the month following the
reporting month.
c. Toxic Chemical Reporting
Any data collected according to the Department’s "Toxic Pollutant
Monitoring Protocol and Reporting Requirements for Toxic Chemical
Testing Analytical Data" (12/2/2019) being submitted to the Department,
either in fulfillment of Special Conditions II.B or pursuant to the toxic
chemical testing requirement, pretreatment requirements or toxic metals
or organic data collected on a voluntary basis, must be accompanied by
laboratory data reports. At a minimum, these reports shall include, the

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 16 of 29
III. GENERAL CONDITIONS
A. 2. c. Toxic Chemical Reporting
name of the facility, the date(s) of sampling, beginning and ending
sample time, place of sampling collection, the sample type (grab,
composite, etc.), the sample description (influent or effluent), the
preservation method, the analytical method used for each parameter, the
analytical method detection limit, the date of analysis, the name of
person performing the analysis, the analytical result, and the name and
address of the laboratory performing the analyses. Chain-of-custody
forms shall also be submitted.
If the permittee prefers to submit hard copy of this information along
with the supporting documentations instead of the electronic submission
via NetDMR tool, they shall be submitted to:
Attention: Toxic Chemical Data
WSA – Compliance Program
Maryland Department of the Environment
1800 Washington Boulevard, STE 420
Baltimore, Maryland 21230-1708
3. Sampling and Analysis Methods
Analytical and sampling methods shall conform to test procedures for the
analysis of pollutants as identified in 40 CFR Part 136 - "Guidelines
Establishing Test Procedures for the Analysis of Pollutants."
4. Use of Sufficiently Sensitive Test Methods
In accordance with 40 C.F.R. § 122.44(i)(1)(iv), the permittee shall use
sufficiently sensitive test procedures (i.e., methods) approved under 40 C.F.R.
Part 136 or required under 40 C.F.R. Chapter I, Subchapter N or O, for the
analysis of pollutants or pollutant parameters limited in this permit. A method is
considered “sufficiently sensitive” when either: (1) the method minimum level
(ML) is at or below the level of the effluent limit established in this permit for
the measured pollutant or pollutant parameter; or (2) the method has the lowest
ML of the analytical methods approved under 40 C.F.R. Part 136 or required
under 40 C.F.R. Chapter I, Subchapter N or O for the measured pollutant or
pollutant parameter. The ML is not the minimum level of detection, but rather
the lowest level at which the test equipment produces a recognizable signal and
acceptable calibration point for a pollutant or pollutant parameter, representative
of the lowest concentration at which a pollutant or pollutant parameter can be
measured with a known level of confidence. For the purposes of this permit, the
detection limit is the lowest concentration that can be reliably measured within
specified limits of precision and accuracy for a specific laboratory analytical
method during routine laboratory operating conditions (i.e., the level above
which an actual value is reported for an analyte, and the level below which an
analyte is reported as non-detect).

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 17 of 29
III. GENERAL CONDITIONS
A. 5. Analytical Laboratory
Within 30 days after the effective date of this permit, the permittee shall submit
to the Department the name and address of the analytical laboratory (including
the permittee's own laboratory) which is used to perform the monitoring
required by this permit.
If the laboratory changes during the effective period of this permit, the permittee
shall notify the Department of the new laboratory within 30 days after the
change.
6. Monitoring Equipment Maintenance
a. The permittee shall calibrate and maintain all monitoring and analytical
instrumentation to ensure accuracy of measurements.
b. Environment Article, Section 9-343 provides that any person who
falsifies, tampers with, or knowingly renders inaccurate, any monitoring
device or method required to be maintained under this permit shall, upon
conviction, be punished by a fine of not more than $10,000 per violation,
or by imprisonment for not more than six months per violation, or by
both.
7. Recording of Results
For each measurement or sample taken pursuant to the requirements of the
permit, the permittee shall record the following information:
a. the date, exact place and time of sampling or measurement;
b. the person(s) who performed the sampling or measurement;
c. the dates analyses were performed;
d. the person(s) who performed each analysis;
e. the analytical techniques or methods used; and
f. the results of such analyses.
8. Additional Monitoring by Permittee
If the permittee monitors any pollutant at the location(s) designated herein more
frequently than required by this permit, using approved analytical methods as
specified above, the results of such monitoring shall be included in the
calculation and reporting of the values required in the Discharge Monitoring
Report. The increased frequency shall also be reported. The results of any other
monitoring performed by the permittee shall be made available to the
Department upon request.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 18 of 29
III. GENERAL CONDITIONS
A. 9. Record Retention
All data used to complete the permit application and all records and information
resulting from the monitoring activities required by this permit, including all
records of sampling and analyses performed, calibration and maintenance of
instrumentation, and recordings from continuous monitoring instruments, shall
be retained for a minimum of three years. This period shall be extended
automatically during the course of litigation or when requested by the
Department.
B. General Requirements
1. Permit Noncompliance - Notification Requirements
All discharges authorized herein shall be consistent with the terms and
conditions of this permit. If, for any reason, the permittee does not comply with
or will be unable to comply with any permit condition, the permittee shall,
within 24 hours, notify the Department by telephone at (410) 537-3510 during
work hours or at (866) 633-4686 during evenings, weekends, and holidays. The
permittee shall provide the Department with the following information in
writing within five days of such oral notification.
a. a description of the noncomplying discharge including the name of the
stream and the impact upon the receiving waters;
b. cause of noncompliance;
c. the duration of the period of noncompliance and the anticipated time the
condition of noncompliance is expected to continue;
d. steps taken by the permittee to reduce and eliminate the noncomplying
discharge;
e. steps to be taken by the permittee to prevent recurrence of the condition
of noncompliance;
f. a description of the accelerated or additional monitoring to determine the
nature and impact of the noncomplying discharge; and
g. the results of the monitoring described in f. above.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 19 of 29
III. GENERAL CONDITIONS
B. 2. Change in Discharge
The permittee shall report any anticipated facility expansions, production
increases, or process modifications which will result in new, different or an
increased discharge of pollutants by submitting a new application at least 180
days prior to the commencement of the changed discharge except that if the
change only affects a listed pollutant and will not violate the effluent limitations
specified in this permit, by providing written notice to the Department.
Following such notice, the permit may be modified by the Department to
include new effluent limitations on those pollutants.
3. Facility Operation and Quality Control
All waste collection, control, treatment and disposal facilities shall be operated
in a manner consistent with the following:
a. Facilities shall be operated efficiently to minimize upsets and discharges
of excessive pollutants.
b. The permittee shall provide an adequate operating staff qualified to carry
out operation, maintenance and testing functions required to ensure
compliance with this permit. Superintendents and operators must be
certified by the Board of Waterworks and Waste Systems Operators
located at Montgomery Park Business Center, 1800 Washington
Boulevard, STE- 410, Baltimore, Maryland 21230 in accordance with
Title 12 of Environmental Article, Annotated Code of Maryland, and
Section 26.06.01 of the COMAR.
c. Facility maintenance work, which adversely affects or may adversely
affect the discharge quality shall be scheduled during non-critical water
quality periods.
4. Adverse Impact
The permittee shall take all reasonable steps to minimize any adverse impact to
waters of this State, human health or the environment resulting from
noncompliance with any effluent limitations specified in this permit, and must
perform accelerated or additional monitoring as necessary to determine the
nature and impact of the noncomplying discharge.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 20 of 29
III. GENERAL CONDITIONS
B. 5. Bypassing
Any bypass of treatment facilities is prohibited unless the bypass does not cause
any violations of the effluent limitations specified in Special Condition II.A, and
is for essential maintenance to assure efficient operation, or unless the permittee
can prove that:
a. the bypass is unavoidable to prevent loss of life, personal injury, or
substantial physical damage to property, damage to the treatment
facilities which would cause them to become inoperable, or substantial
and permanent loss of natural resources; and
b. there are no feasible alternatives to the bypass; and
c. the Department receives notification pursuant to General Condition
III.B.1 above. Where the need for a bypass is known (or should have
been known) in advance, this notification shall be submitted to the
Department for approval at least ten days before the date of the bypass or
at the earliest possible date if the period of advance knowledge is less
than ten days; and
d. The Department may approve an anticipated bypass, after considering its
adverse effects; if the Department determines that it will meet the three
conditions listed above in Sections a thru c of this General Condition
III.B.5.
6. Conditions Necessary for Demonstration of Upset
An upset shall constitute an affirmative defense to an action brought for
noncompliance with technology-based effluent limitations only if the permittee
demonstrates, through properly signed, contemporaneous operating logs, or
other relevant evidence, that:
a. an upset occurred and that the permittee can identify the specific cause(s)
of the upset;
b. the permitted facility was at the time being operated in a prudent and
workman-like manner and in compliance with proper operation and
maintenance procedures;
c. the permittee submitted a 24-hour notification of upset in accordance
with the reporting requirements of General Condition III.B.1 above;
d. the permittee submitted, within five calendar days of becoming aware of
the upset, documentation to support and justify the upset; and
e. the permittee complied with any remedial measures required to minimize
adverse impact. In any enforcement proceeding, the permittee seeking to
establish the occurrence of an upset has the burden of proof.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 21 of 29
III. GENERAL CONDITIONS
B. 7. Sewage Sludge Requirements
The permittee shall comply with all State and federal laws and regulations
regarding Sewage Sludge Management, and with any regulations promulgated
pursuant to Environment Article, Section 9-230 et seq. or to the Clean Water
Act, Section 405 (d). A Sewage Sludge Utilization Permit is required for the
collection, handling, burning, storage, treatment, land application, disposal, or
transportation of sewage sludge, processed sewage sludge, or any product
containing these materials in Maryland. If the sludge is hauled out of the State
for disposal, a transportation permit must be obtained from the Department.
8. Power Failure
The permittee shall maintain compliance with the effluent limitations and all
other terms and conditions of this permit in the event of a reduction, loss or
failure of the primary source of power to the wastewater collection and
treatment facilities.
9. Right of Entry
In accordance with 40 CFR §122.41(i), the permittee shall allow the Secretary of
the Department, the Regional Administrator of the Environmental Protection
Agency, and their authorized representatives (including an authorized contractor
acting as a representative), upon presentation of credentials and other documents
as required by the law, to:
a. Enter upon the permittee’s premises where a regulated facility or activity
is located or conducted, or where records must be kept under the
conditions of this permit;
b. Have access to and copy, at reasonable times, any records that must be
kept under the conditions of this permit;
c. Inspect at reasonable times any facilities, equipment (including
monitoring and control equipment), practices, or operations regulated or
required under this permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring
permit compliance or as otherwise authorized by the Clean Water Act,
any substances or parameters at any location.
10. Property Rights/Compliance With Other Requirements
The issuance of this permit does not convey any property rights in either real or
personal property, or any exclusive privileges, nor does it authorize any injury to
private property, invasion of personal rights, or any infringement of federal,
State or local laws or regulations.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 22 of 29
III. GENERAL CONDITIONS
B. 11. Reports and Information
a. Upon request, the permittee shall provide to the Department, within a
reasonable time, copies of records required to be kept by this permit.
The permittee shall also furnish to the Department, within a reasonable
time, any information which the Department may request to determine
whether cause exists for modifying, revoking and reissuing, or
terminating this permit; or to determine compliance with this permit.
b. All applications, reports or information submitted to the Department
shall be signed and certified as required by COMAR 26.08.04.01 and 40
CFR 122.22.
c. Except for data determined to be confidential under COMAR
26.08.04.01, all data shall be available for public inspection at the
Department and the Office of the Regional Administrator of the
Environmental Protection Agency. Effluent data shall not be considered
confidential.
d. Environment Article, Section 9-343 provides that any person who
knowingly makes any false statement, representation, or certification in
any record or other document submitted or required to be maintained
under this permit, including monitoring reports or reports of compliance
or noncompliance, shall upon conviction be punished by a fine of not
more than $10,000 or by imprisonment for not more than six months or
by both.
12. Transfer of Ownership or Control
In the event of any change in ownership or control of facilities from which the
authorized discharge emanates, the permit may be transferred automatically to
another person only if:
a. the current permittee notify the Department, in writing, of the proposed
transfer at least 30 days prior to the proposed transfer date;
b. the notice includes a written agreement between the existing permittee
and a new permittee containing the specific date of proposed transfer of
permit coverage, and of responsibilities and liabilities under the permit;
and
c. neither the current permittee nor the new permittee receive notification
from the Department, within 30 days of the Department's receipt of the
agreement, of its intent to modify, revoke, reissue or terminate the
existing permit. If this notice is not received, the transfer is effective on
the date specified in the agreement mentioned in paragraph 12(b) above.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 23 of 29
III. GENERAL CONDITIONS
B. 13. New Effluent Standards
This permit shall be revoked and reissued or modified to meet any effluent
standard, water quality standard or prohibition established under the
Environment Article, the Clean Water Act, or regulations promulgated thereto,
and the permittee shall be so notified.
14. Industrial Users
The permittee shall require all industrial users of the wastewater treatment
facility to comply with user charges as established by the permittee, pursuant to
Section 9-326(a)(i) of the Environment Article.
15. Noncompliance
Nothing in this permit shall be construed to preclude the institution of any legal
action for noncompliance with State, federal or local laws and regulations.
16. Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal
action against the permittee or to relieve the permittee from any responsibilities,
liabilities, or penalties to which the permittee is or may be subject under Section
311 of the Clean Water Act or under the Environment Article.
17. Waterway Construction and Obstruction
The permit does not authorize the construction or placing of physical structures,
facilities, debris, or the undertaking of related activities in any waters of this
State including the 100 year flood plain.
18. Construction Permit
This permit is not a permit to construct. For a new facility, in order to make this
permit valid, a construction permit shall be obtained to meet the requirements of
COMAR 26.03.12.03(A) and Environment Article, Section 9-204(d).
19. Severability
If any provision of this permit shall be held invalid for any reason, the remaining
provisions shall remain in full force and effect, and such invalid provisions shall
be considered severed and deleted from this permit.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 24 of 29
III. GENERAL CONDITIONS
C. Wastewater Collection System
This permit shall not authorize discharges from the wastewater collection system for
this facility.
1. Reporting Requirements
Pursuant to Environment Article Sub title 9-331.1, the permittee must report
sanitary sewer overflows (SSOs) which result in the direct or potential discharge
of raw or diluted sewage into the surface waters or ground waters of the State to
the Water and Science Administration’s Compliance Program. Concurrently, the
permittee shall also notify the local health department. Such reports must be
made via telephone as soon as practicable, but no later than 24 hours after the
time that the permittee became aware of the event. Reportable SSOs include,
but are not limited to, overflows into the surface of the ground, into waterways,
storm drains, ditches or other manmade or natural drainage conveyances to
surface or ground waters which are reasonably likely to reach waters of the
State. Overflows that are wholly contained within buildings and not likely to
discharge to waterways need not be reported. Treatment plant bypasses shall be
reported under General Condition III.B.1. Telephone reports shall be made to
(410) 537-3510 on weekdays between 8:00 a. m. and 5:00 p.m. After hours
telephone notification shall be made to emergency response number at (866)
633-4686.
When the incident is reported to the Department, the following information
needs to be included:
a. the location of the overflow, including city or county,
b. the name of the receiving water, if applicable;
c. an estimate of the volume of sewage discharged;
d. a description of the sewer system or treatment plant component from
which the overflow was released (such as manhole, crack in pipe,
pumping station wet well or constructed overflow pipe);
e. an estimate of the overflow’s impact upon public health and to waters of
the State;
f. the cause or suspected cause of the overflow;
g. the estimated date and time when the overflow began and stopped or the
anticipated time the overflow is expected to continue;

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 25 of 29
III. GENERAL CONDITIONS
C. 1. h. if known at the time of reporting, the steps taken or planned to reduce,
eliminate and prevent reoccurrence of the overflow and a schedule of
major milestones for those steps; (if unknown at the time the telephone
report is made, the steps must be included in the written reports
submitted under general conditions III.C.2).
i. if known at the time of reporting, measures taken or planned to mitigate
the adverse impact of the overflow and a schedule of major milestones
for those steps (if unknown at the time the telephone report is made, the
steps must be included in the written reports submitted under general
conditions III.C.2); and
j. whether there has already been a notification to the public and other City
or County Agencies or Departments and how notification was done.
2. Written Reports
Within 5 calendar days following telephone notification of the event, the
permittee shall provide MDE with a written report regarding the incident that
includes, at a minimum, the information cited above.
The permittee shall maintain copies of all overflow records and reports, work
orders associated with investigation of overflows, a list and description of
complaints from customers or others related to overflows (including backups of
sewage in to houses or businesses), and documentation of performance and
implementation measures for minimum period of three years and shall make this
information available to MDE for review upon written request.
This wastewater collection system provision may be superseded by a general
permit for collection systems, when such a permit is issued by MDE and the
permittee have been accepted for registration under the permit.
3. Other Requirements
The permittee, as directed by the State or local health department, shall also be
responsible for posting notification in close proximity to the affected area/stream
and for conducting appropriate water quality sampling as deemed necessary.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 26 of 29
III. GENERAL CONDITIONS
D. Permit Expiration, Modification, or Revocation
1. Expiration of Permit
This permit and the authorization to discharge shall expire at midnight on the
expiration date of the permit unless the permittee has submitted a timely and
complete reapplication pursuant to Section II.I.
2. [Reserved.]
3. Permit Modification - Request of Responsible Permittee
A permit may be modified by the Department upon the written request of the
permittee and after notice and opportunity for a public hearing in accordance
with the provisions set forth in COMAR 26.08.04.10.
4. Permit Modification, Suspension, Revocation - Violation of Laws
A permit may also be modified, suspended or revoked by the Department, in the
event of a violation of the terms or conditions of the permit, or of State or
federal laws and regulations and in accordance with the provisions set forth in
COMAR 26.08.04.10. This permit may be suspended or revoked upon a final,
unreviewable determination that the permittee lacks, or is in violation of, any
federal, state, or local approval necessary to conduct the activities authorized by
this permit.

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 27 of 29
IV. CIVIL AND CRIMINAL PENALTIES
A. Civil Penalties for Violations of Permit Conditions
In addition to civil penalties for violations of State water pollution control laws set forth
in Section 9-342 of the Environment Article, Annotated Code of Maryland; the
Permittee shall be subject to civil penalty set forth in 33 U.S.C. § 1319 (d) of the Clean
Water Act as adjusted for inflation according to 40 CFR §19.4.
B. Criminal Penalties for Violations of Permit Conditions
In addition to criminal penalties for violations of State water pollution control laws set
forth in Section 9-343 of the Environment Article, Annotated Code of Maryland, the
Permittee shall be subject to criminal penalty set forth in 33 U.S.C. § 1319 (c).

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 28 of 29
V. MAP SHOWING DISCHARGE POINT LOCATION
A

Permit No. 20-DP-0116 (NPDES MD0020834) Page No. 29 of 29
VI. NPDES PROGRAM
On September 5, 1974, the Administrator of the U.S. Environmental Protection Agency
approved the proposal submitted by the State of Maryland for the operation of a permit
program for wastewater discharges pursuant to Section 402 of the Clean Water Act.
Pursuant to the aforementioned approval, this discharge permit is both a State of Maryland
discharge permit and an NPDES permit.
Heather W. Barthel for (Oct 18, 2021 14:43 EDT)
D. Lee Currey, Director
Water and Science Administration