Attachment 2- Westside WWTP State Discharge Permit 17-DP-2787 NPDES Permit MD0020851.pdf

Maryland Department of the Environment

OCT 1 5 2018

CERTIFIED MAIL

Rushi Bhatt, Facility Manager United States Department of Agriculture Agricultural Research Service 10300 Baltimore A venue Building 426, BARC East Beltsville, MD 20705

Larry Hogan, Governor Boyd K. Rutherford. Lt. Governor

Ben Crumbles, Secretary Horacio Tablada, Deputy Secretary

RE: Discharge Permit for USDA BARC West Side Wastewater Treatment Plant State Discharge Permit 17-DP-2787, NPDES Permit MD0020851

Dear Mr. Bhatt:

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.

The annual maximum loading rate limits for Total Nitrogen, Total Phosphorus and Total Suspended Solids (TSS) are included in the permit. Attached please find a copy of blank and sample forms for your use to calculate monthly load, year-to-date cumulative load and annual maximum load for these parameters. At the end of each calendar year, the permittee will be required to fill out and submit this form along with the Discharge Monitoring Report (DMR) for the month of December. You may contact the Project Manager to obtain this form in an electronic version (EXCEL SPREADSHEET).

Your facility has been approved by MOE 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.

1800 Washington Boulevard I Baltimore. MD 21230 I 1-800-633-6101 I 410-537-3000 I TTY Users 1-800-735-2258 www.mde.maryland.gov

Mr. Bhatt

You will also find enclosed a copy of the Federal Register published on August 28, 2017 with final rule to update the Code of Federal Regulations (CFR), Title 40, Part 136 - "Guidelines Establishing Test Procedures for Analysis of Pollutants" which is in effect from September 27, 2017. For future reference, please be advised to visit the U .S Government Publishing Office (USGPO) website (http://bit.ly/40CFR Part136, 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 also enclosed a copy of the table of the Minimum Monitoring Requirements, a copy of Department's "Toxic Pollutant Monitoring Protocol and Reporting Requirements for Toxic Chemical Testing Analytical Data (amended on 05/18/2011)" a copy of Effluent Biotoxicity Testing Protocol for Industrial and Municipal Effluents, and a copy of the WWTP Effluent Toxic Chemical Monitoring Data Transmittal Cover Sheet.

If you have any questions, please contact Elita Castleberry, Project Manager, Surface Discharge Permits Division, at (410) 537-4113.

Sincerely, ~~a_ff~~ D. Lee Currey, Director Water and Science Administration

Enclosures cc: Mr. Mark Smith, U.S. Environmental Protection Agency (through electronic copy) Evelynn Hoban, Director, Prince George's County Health Department Compliance Program's Central Division Chief Ms. Chantelle Watkins (Permit cover page only) Mr. Bill Lee (through electronic copy) Mr. Matt Rowe (through electronic copy) Mr. Dennis Rasmussen

1800 Washington Boulevard I Baltimore. MD 21230 I l-800-633-6101 I 410-537-3000 I TTY Users 1-800-735·2258

D I S C H A R G E P E R M I

Pursuant to the provisions of Title 9 of the Enviro regulations promulgated thereunder, and the provisi seq., and implementing regulations 40 CFR Parts 122, 1 Environment hereby establishes conditions and requi and collection system and authorizes:

United States Agricultural Research Service 10300 Baltimore Avenue Building 426, BARC East

Beltsville, MD 20705

TO DISCHARGE FROM: USDA BARC West Side Wastewater Treatment Plant

LOCATED AT: Building 015, 3rd St. & South Drive Beltsville Agricultural Research Center Beltsville, Prince George's County, Maryland 20705

THROUGH OUTFALL: 002A (WWTP Effluent)

TO: the Little Paint Branch water contact recreation and nontidal with the following special and general conditions a herein and made a part hereof.

N P D E S D i s c h a r g e

P e r m i t N u m b e r : M D 0 0

E f f e c t i v e

D a t e : 1 1 / 0 1

M o d i f i c a t i o n

D a t e :

( N o t a p p l i c a b l e )

D I S C H A R G E P E R M I T

Pursuant to the provisions of Title 9 of the Environment Article, Annotated Code of Maryland regulations promulgated thereunder, and the provisions of the Clean Water Act, 33 U.S.C. Section 1251

., 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:

United States Department of Agriculture Agricultural Research Service 10300 Baltimore Avenue Building 426, BARC East Beltsville, MD 20705

USDA BARC West Side Wastewater Treatment Plant

Building 015, 3rd St. & South Drive Beltsville Agricultural Research Center Beltsville, Prince George's County, Maryland 20705

(WWTP Effluent)

Little Paint Branch, designated as Use I water which is protected for water contact recreation and nontidal warmwater aquatic life with the following special and general conditions and a map incorporated herein and made a part hereof.

M D 0 0 2 0 8 5 1

S t a t e D i s c h a r g e

P e r m i t N u m b e r :

0 1 / 2 0 1 8

E x p i r a t i o n

D a t e :

( N o t a p p l i c a b l e )

R e a p p l i c a t i o n D u e

D a t e :

T

Annotated Code of Maryland, and ons of the Clean Water Act, 33 U.S.C. Section 1251 et

23, 124 and 125, the Department of the rements pertinent to the wastewater treatment plant water which is protected for warmwater aquatic life; in accordance with the following special and general conditions and a map incorporated

1 7 - D P - 2 7 8 7

1 0 / 3 1 / 2 0 2 3

1 1 / 0 1 / 2 0 2 2

Maryland Department of the Environment

Larry Hogan. Governor

Boyd K. Rutherford. Lt. Governor

Ben Grumbles. Secretary

Horacio Tablada. Deputy Secretary

1800 Washington Boulevard I Baltimore. MD 21230 I 1-800-633-6101 I 410-537-3000 I TTY Users 1-800-735-2258

Permit No. 17-DP-2787(NPDES MD0020851) Page No. 2 of 37

I . D E F I N I T I O N S

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. “BOD5 (Biochemical Oxygen Demand)” means the amount of oxygen consumed in a standard BOD5 test without the use of a nitrification inhibitor at 20 degree centigrade on an 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. 17-DP-2787(NPDES MD0020851) Page No. 3 of 37

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. 17-DP-2787(NPDES MD0020851) Page No. 4 of 37

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. 17-DP-2787(NPDES MD0020851) Page No. 5 of 37

T. “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.

U. “TKN (Total Kjeldahl Nitrogen)” means organic nitrogen plus ammonia nitrogen.

V. “TSS (Total Suspended Solids)” means the residue retained on the filter by an analysis done in accordance with Standard Methods or other approved methods.

W. “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. 17-DP-2787 (NPDES MD0020851) Page No. 6 of 37

I I . S P E C I A L C O N D I T I O N S

A. Effluent Limitations, Outfall 002A (1) (2) (3) (4)

The quality of the effluent discharged by the facility at a discharge point location- 002A shall be limited at all times as shown below:

Effluent Characteristics

Maximum Effluent Limits

Total Monthly

Loading

Rate, Total Monthly

Loading

Rate, Low Flow (Growing

Season 4/1 to 10/31) Total

Monthly Loading Rate

Annual

Maximum

Loading Rate, Annual Average

Concentration, Pounds/Month Pounds/Day Pounds/Growing Season Pounds/Year mg/l

BOD5

(4)

REPORT N/A N/A 14,705 N/A

Total Suspended Solids(4) (6)

REPORT N/A 7,120 14,680 N/A

Total Phosphorus-P (4) (7)

REPORT 0.5 N/A 183 0.3

Total Nitrogen-N (4) (7)

REPORT 6.7 N/A 2,437 4.0

Total Polychlorinated Biphenyls(4) (8) REPORT N/A N/A REPORT N/A

An annual average flow of 0.2 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.

Effluent Characteristics

Maximum Effluent Limits

Monthly

Average

Loading

Rate, Weekly

Average

Loading

Rate, Daily

Average

Loading

Rate, Monthly

Average

Concentration, Weekly

Average

Concentration, Daily

Average

Concentration, Pounds/day Pounds/day Pounds/day mg/l mg/l mg/l

BOD5 (4/1 to 10/31) (11/1 to 3/31)

N/A N/A

N/A N/A

TSS (4/1 to 9/30) (10/1 to 3/31)

N/A N/A

N/A N/A

Total Ammonia Nitrogen as N (4/1 to 10/31)(5) 6.0 N/A N/A 3.6 N/A N/A

Total Recoverable Copper(5) (9) 0.03 N/A N/A 19 ug/l N/A N/A

Effluent Characteristics

Effluent Limits

Maximum Minimum

E. Coli 126 MPN/ 100 ml monthly geometric mean value N/A

Total Residual Chlorine (10) (See footnote- 10) N/A pH 8.5 6.5

Dissolved Oxygen (All Year) N/A 5.0 mg/l at anytime

Permit No. 17-DP-2787 (NPDES MD0020851) Page No. 7 of 37

A. Effluent Limitations, Continued

Footnotes for effluent limitations:

(1) When this permit is renewed, the new limitations may not be equal to the above limitations.

(2) There shall be no discharge of floating solids or visible foam other than trace amounts.

(3) 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.

(4) The Little Paint Branch is on the 303(d) list as the impaired waters for: Enterococcus, Total Suspended Solids (TSS), Total Phosphorous (TP), Polychlorinated biphenyls (PCBs), Heptachlor Epoxide, Total Nitrogen (TN), Trash, Biochemical Oxygen Demand (BOD), Chloride, Sulfates, Channelization, and Lack of Riparian Buffer. A Total Maximum Daily Load (TMDL), approved by the EPA: on 06/05/2008, allocated a: BOD limit of 14,705 lb/yr, TN limit of 2,437 lb/yr and TP limit 183 lb/yr; a TMDL on 03/14/2007 allocated a Enterococci limit of

0.25 Billion MPN/day; a TMDL on 09/30/2011 allocated PCB limit of 0.18 grams/yr; a TMDL on 07/24/2007 allocated a TSS limit of 7.34 tons/year and 3.56 tons/growing season (April 1 to October 31); and a TMDL on 09/21/2010 did not allocate a trash to this facility and the parameter limits are in conformance with the TMDLs. This permit is in conformance with 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.

(5) Total monthly loading rate (in pounds/day for nutrients is a calculated parameter to be reported for each calendar month. It is equal to {(monthly average concentration (mg/l) x (total flow in a calendar month (Million Gallons) x 8.34 }/ (the number of days in the month)

(6) The Growing Season (4/1 to 10/31) Maximum Loading Rate (in pounds/season) for TSS is a calculated parameter to be reported monthly as a sum of the Total Monthly Loading Rates from April through October of the current calendar year. The details and the results of all required annual calculations shall be submitted to the Department with the DMR for October.

(7) The permittee may request that the permit be reopened and modified to include nutrient trading consistent with all applicable regulations and requirements in effect at that time.

(8) Since the annual load of PCBs exceeded 0.18 grams (0.0004 lbs) per year, the action level defined in the previous permit cycle (11-DP-2787), a best management practice (BMP) will be required to track and eliminate sources of the PCBs. The permittee shall submit a plan to the Department for approval to track and eliminate sources of the PCBs. The permittee shall submit a plan to the Department for approval to track the source and BMP implementation within 60 days of permit effective date.

(9) Every six months the permittee shall submit to the Department a status repost detailing current plans for meeting the limits. This report is due in six months after the issuance for the permit and every six months thereafter until the limit has been consistently met for a minimum of one year of monitoring data.

If the permittee elects to apply for an alternative site-specific effluent copper limit as specified below, the permittee shall submit a permit modification request to MDE. The request shall be followed by submission of a study plan within six (6) months of the effective date of the permit pursuant to the regulations identified in Special Condition II P.

Permit No. 17-DP-2787 (NPDES MD0020851) Page No. 8 of 37

(10) 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 USDA West WWTP. The wastewater shall be dechlorinated to reduce effluent total residual chlorine concentration to the nondetectable level (See definition I.M of the discharge permit).

Permit No. 17-DP-2787 (NPDES MD0020851) Page No. 9 of 37

B(1) Minimum Monitoring Requirements:

The effluent characteristics listed below in Table B(1) shall be monitored at the sampling point (Definition I.R). If the sampling point is other than the outfall- 002A, the permittee shall ensure that the effluent samples are representative of the effluent quality being discharged at the outfall 002A.

Effluent Characteristics Monitoring Period Measurement Frequency Sample Type

BOD5

(11) All Year One per week 24-hour composite

Total Suspended Solids (11) All Year One per week 24-hour composite

Total Ammonia Nitrogen as N (11) (13) All Year One per week 24-hour composite

Total Nitrogen as N (11) (13) (14) All Year One per month Calculated

Total Phosphorous as P(11) (14) All Year One per month 24-hour composite

Organic Nitrogen as N(11) (12) (13) All Year One per month 24-hour composite

Nitrite + Nitrate as N(11) (12) (13) All Year One per month 24-hour composite

Orthophosphate (11) (12) All Year One per month 24-hour composite

Total Toxic Organics (11) (12) All Year One per quarter 24-hour composite

Zinc (11) (12) All Year One per quarter 24-hour composite

Silver (11) (12) All Year One per quarter 24-hour composite

Nickel (11) (12) All Year One per quarter 24-hour composite

Mercury (11) (12) All Year One per quarter 24-hour composite

Lead (11) (12) All Year One per quarter 24-hour composite

Cadmium (11) (12) All Year One per quarter 24-hour composite

Arsenic (11) (12) All Year One per quarter 24-hour composite

Cyanide (11) (12) All Year One per quarter 24-hour composite

Heptachlor Epoxide (11) (12) All Year One per quarter 24-hour composite

Abubaker.Ashiwaya Highlight

Abubaker.Ashiwaya Highlight

Abubaker.Ashiwaya Highlight

Permit No. 17-DP-2787 (NPDES MD0020851) Page No. 10 of 37

Effluent Characteristics Monitoring Period Measurement Frequency Sample Type

Effluent Hardness (11) (12) All Year One per month 24-hour composite

Total Polychlorinated Biphenyls (11) (16) All Year One per quarter 24-hour composite

Total Recoverable Copper (11) All Year One per month Grab

E. Coli (11) All Year One per day Grab

Total Residual Chlorine (11) (15) All Year One per day Grab

Dissolved Oxygen (11) All Year One per day Grab pH (11) All Year One per day Grab

Flow (11) (17) (18) All Year Continuous Recorded (18)

Total Flow (11) (19) All Year One per month Calculated

Permit No. 17-DP-2787 (NPDES MD0020851) Page No. 11 of 37

B(1) Minimum Monitoring Requirements, continued:

Footnotes for the monitoring requirements, continued:

(11) "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: BOD5 (00310), Total Suspended Solids (00530), 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), E. Coli (51040), Total Residual Chlorine (50060), Dissolved Oxygen (00300), pH (00400), Flow (50050), Total monthly flow (82220), Total hardness as CaCO3, (00900), PCBs (79819), Total Recoverable Copper as Cu (01119), Heptachlor Epoxide (39420), Total Zinc (01092), Total Nickel (01067), Total Lead (01051), Total Mercury (71900), Total Cyanide (00720), Total Silver (01077), Total Cadmium (01027), Total Arsenic (01002), and Total Toxic

Organics (78141)

(12) 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 (DMR) (EPA Form 3320-1) as monthly average concentrations.

(13) 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. Organic nitrogen as N is a calculated parameter which is TKN minus ammonia as N. All the nitrogen species must be sampled on the same day.

(14) The permittee shall also calculate and report on the monthly DMR the TN and TP total monthly loads (Definition I.H.5) plus year-to-date cumulative loads (Definition I.H.6) for the calendar year in question for the outfall- 002.

For each calendar year, the year-to-date cumulative loads of TN and TP for the month of December shall represent the total annual and they must be incorporated toward complying with the respective annual maximum load limits.

(15) The Minimum monitoring requirements of one 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 USDA West 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.

(16) Total PCBs shall be reported quarterly on the Monthly Operating Reports (MORs) and Discharge Monitoring Reports (DMRs) ending on March, June, September and December. On MORs, Total PCBs shall be reported as individual samples in picograms (pg)/l; and on DMRs, Total PCBs shall be reported as quarterly concentration in pg/l and quarterly load in grams/quarter. The annual cumulative load in grams per year shall be calculated as sum of four consecutive quarterly loads and reported on the fourth quarter DMR. Total quarterly load (in grams/quarter) for PCBs is a calculated parameter to be reported for each calendar quarter. It is equal to {(quarterly concentration (pg/l) x (Total flow in a calendar quarter (Million Gallons) x 3.785412x10-6}. Soon after completion of the fourth quarter sampling for Total PCBs, the permittee shall submit to Municipal Permit Division results of Total PCB for all four quarters for evaluation. All details with laboratory data and chain-of-custody sheets must also be provided along with the Total PCBs results for validation of the data. The Department will evaluate results of the PCBs samplings; and then make determination as whether to continue, stop, or modify the monitoring, or add a permit limit.

For Total PCBs analysis, the permittee shall use either EPA’s analytical Methods 1668A or 1668B. Any value detected less than 5 picograms (pg)/l may be reported as non-detectable.

Permit No. 17-DP-2787 (NPDES MD0020851) Page No. 12 of 37

(17) Flows shall be reported in millions gallons per day (mgd) to at least the nearest 1,000 gallons per day. (Example: A flow of 24,699 gallons per day shall be reported as 0.025 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)).

(18) Continuous electronic flow measurement and recording which can produce a permanent record are acceptable to the Department.

(19) 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 millions gallons (MG) to at least the nearest 1,000 gallons. (Example: A flow of 15,524,699 gallons shall be reported as

15.525 MG).

Permit No. 17-DP-2787 (NPDES MD0020851) Page No. 13 of 37

B(2) Report Submittal Requirements

Report Description Reporting Frequency Report Submittal Deadline

Effluent Biomonitoring Study Plan and Toxic Chemical Testing Plan (27)(28) See footnote - 28 See footnote - 28

Effluent Biomonitoring Study Report (27)(29)(31) See footnotes- 29 & 31 See footnote- 31

Effluent Toxic Chemical Testing Report (27)(30)(31) See footnotes – 30 & 31 See footnote- 31

PCB BMP Plan (8) (27) See footnotes – 8 See footnotes – 8

Copper Report (9) (27) See footnotes – 9 See footnotes – 9

(27) If the permittee has selected a third party for submitting reports to the Department, the permittee must provide to the third party with a document of authorization for report submission which is required with the report.

(28) Within three months from the effective date of this permit, the permittee shall submit the Study Plans for effluent biomonitoring as well as toxic chemical testing and obtain approval from the Department. For further details, refer to Special Condition II.D.1 for Effluent Biomonitoring Study Plan and Special Condition II.F.1 for Effluent Toxic Chemical Testing Study Plan.

(29) After MDE’s approval of the Effluent Biomonitoring Study Plan, the permittee shall perform the effluent biomonitoring study and submit the results in a comprehensive report to the Department as per requirements of the Special Condition II.D.

(30) After MDE’s approval of the Effluent Toxic Chemical Testing Plan, the permittee shall perform the effluent toxic chemical testing and submit the results in a comprehensive report to the Department as per requirements of the Special Condition II.F.

(31) The reports (a) for each biomonitoring study test performed as per the Special Condition II.D.2 and (b) for each analytical testing for toxic chemicals performed as per Special Condition II.F.3 shall be submitted to the Department by a mail or attached and submitted to the Department along with DMR for the month during which the test was completed, using NetDMR no later than 28th of the month following the test completion month. (Example: If the test is completed in March, the comprehensive report shall be submitted with the March DMR no later than 28th April).

Permit No. 17-DP-2787 (NPDES MD0020851) Page No. 14 of 37

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.

If the most recent three year average flow is over 80% of its design capacity or if it is anticipated to exceed 80 % in the following year, a Wastewater Capacity Management Plan (WCMP) must be submitted to the Department using NetDMR no later than January 28 of the following year. Thereafter, the “Wastewater Flow Capacity Report (WFCR)” and “worksheets (Style #1 and #2) for WFCR” shall be submitted to the Department using NetDMR tool no later than January 28th of each year. The permittee can obtain the WCMP guidance document and forms from the Department’s web site links listed below: (a) http://9nl.at/MD-CMPGuidance for WCMP guidance document, (b) http://9nl.at/MD- CMPFlowCapReport for WFCR, (c) http://9nl.at/MD-CMPWorksheet1 for WFCR’s Worksheet # 1, and (d) http://9nl.at/MD-CMPWorksheet2 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 Wastewater Discharge Permits Program

Water and Science Administration (WSA) 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.

D. Biomonitoring Program

1. Within three months of the effective date of the permit, the permittee shall submit to the Department for approval a study plan to evaluate wastewater whole effluent toxicity (WET) at Outfall 002 using the biomonitoring results.

The study plan shall include a discussion of:

a. wastewater and production variability

b. sampling & sample handling

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c. source & age of test organisms

d. source of dilution water

e. testing procedures/experimental design

f. data analysis

g. quality assurance/quality control

h. report preparation

i. testing schedule

2. The testing program shall consist of two quarters of definitive chronic testing.

The two events shall be conducted in the first two quarters after the permit effective date following the Department’s acceptance of the study plan.

Each annual testing event shall include the Ceriodaphnia survival and reproduction test and the fathead minnow larval survival and growth test.)

3. The samples used for biomonitoring shall be collected at the same time and location as the samples analyzed for the effluent limitations and monitoring requirements for this outfall. For chlorinated effluents, samples shall be collected after dechlorination. The permittee shall collect 24-hour flow– proportioned composite samples unless the Department has given prior approval of an alternative sampling type.

4. The following EPA document discusses the appropriate methods:

Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms Fourth Edition, EPA-821-R-02-013, October, 2002

5. Test results shall be submitted to the Department within one month of completion of each set of tests.

6. Test results shall be reported in accordance with the Department’s “Effluent Biotoxicity Testing Protocol for Industrial and Municipal Effluents, Appendix E (Reporting Requirements for Effluent Biomonitoring Data), 12/14/2012”.

7. As a minimum, the reported chronic results shall be expressed as NOEC, LOEC, ChV, and IC25.

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8. If a 50% mortality or greater occurs in one or more effluent concentrations during the first 48 hours of the chronic tests, 48-hour LC50s shall be calculated and reported along with the chronic results

9. If testing is not performed in accordance with MDE-approved study plan, additional testing may be required by the Department.

10. If the test results of any two consecutive valid toxicity tests show acute or chronic toxicity (LC50 equal to or less than 100% for acute tests and an IC25 equal to or less than the in-stream waste concentration for chronic tests), the permittee shall repeat the test within 30 days to confirm the findings of acute or chronic toxicity. Intermittent toxicity or other concerns may require additional testing or limits. If acute and/or chronic toxicity is confirmed, the permittee shall:

a. Eliminate the source of toxicity through operational changes as soon as possible but in any case not longer than within three months, or

b. Perform a TRE. If the permittee repeats the toxicity testing as stated above and the results of the repeat test do not confirm the acute or chronic toxicity, the Department will require the permittee to repeat the toxicity testing as stated above to reconfirm a finding of no acute or chronic toxicity. After reconfirmation, the permittee shall complete any remaining quarterly testing required.

11. If the permittee completes a TRE in accordance with II.D.10.b and unacceptable toxicity is confirmed, a Whole Effluent Toxicity (WET) permit limit and a compliance schedule will be required which shall become discharge permit conditions through a Department initiated permit modification or through a permit renewal.

12. When a WET test result shows reasonable potential for toxicity, unless it can be demonstrated that the source of toxicity has been eliminated, inappropriate test procedures were utilized, or the source has been controlled via a chemical specific permit limitation, WET limits shall be required. These limits may be implemented by reopening the current permit or in a permit renewal. Where reasonable potential has been assumed based on one test result, the permit shall include a WET limit effective within three years unless the effluent shows no toxicity in six follow-up quarterly tests. The permit may be modified to remove the WET limit if the six follow-up quarterly tests show no toxicity.

13. If plant processes or operations change so that there is a significant change in the nature of the wastewater, the Department may require the permittee to conduct a new set of tests.

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14. If a significant industrial user locates within the service area so that significant change in the nature of the wastewater might be anticipated, MDE may require the permittee to conduct a new set of tests.

15. The biomonitoring program study plan, WET test results and related materials shall be submitted electronically to the Department if the permittee has already been approved for the NetDMR tool. The material shall be attached as separate single files and labeled as “Biomonitoring Program Study Plan” and “WET Test Results” in the NetDMR tool. Otherwise, the permittee shall submit all pertinent physical documents to:

Attention: Whole Effluent Toxicity Coordinator Compliance Program

Water and Science Administration Maryland Department of the Environment

Montgomery Park Business Center 1800 Washington Boulevard, Suite 420

Baltimore, MD 21230-1708

The permittee shall notify the Department at the above address or via email at mde.biomonitoring@maryland.gov immediately upon electronic submission of the biomonitoring program study plan, WET test results and associated material through NetDMR tool.

E. Toxicity Reduction Evaluation

The permittee shall conduct a Toxicity Reduction Evaluation (TRE) when a review of toxicity test data by the Department indicates unacceptable acute or chronic effluent toxicity. A TRE is an investigation conducted to identify the causative agents of effluent toxicity, isolate the source(s), determine the effectiveness of control options, implement the necessary control measures and then confirm the reduction in toxicity.

1. Within 90 days of notification by the Department that a TRE is required, the permittee shall submit for approval by the Department a plan of study, schedule and completion date for conducting a TRE. The permittee shall conduct the TRE study consistent with the submitted plan and schedule.

2. This plan shall follow the framework presented in Toxicity Reduction Evaluation Guidance for Municipal Wastewater Treatment Plants (EPA/833B- 99/002) August 1999.

Additional Guidance documents on the TRE process are shown below:

- Methods for Aquatic Toxicity Identification Evaluations Phase I Toxicity Characterization Procedures Second Edition United States

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Environmental Protection Agency Office of Research and Development, Washington, DC 20460, EPA/600/6-9 l/003 February 1991

- Methods for Aquatic Toxicity Identification Evaluations Phase II Toxicity Identification Procedures for Samples Exhibiting Acute and Chronic Toxicity, United States Environmental Protection Agency Office of Research and Development, Washington DC 20460, EPA/600/R-92/080 September 1993

- Methods for Aquatic Toxicity Identification Evaluations Phase Ill Toxicity Confirmation Procedures for Samples Exhibiting Acute and Chronic Toxicity, United States Environmental Protection Agency Office of Research and Development, Washington DC 20460, EPA /600/R-92/08 1 September 1993

- Clarifications Regarding Toxicity Reduction and Identification Evaluations in the National Pollutant Discharge Elimination System Program, March 27, 2001, U.S. Environmental Protection Agency, Office of Wastewater Management , Office of Regulatory Enforcement, Washington, DC 20460

3. Beginning 60 days from the date of the Department's acceptance of the TRE study plan and every 60 days thereafter, the permittee shall submit progress reports including all relevant test data to the Department. This shall continue until completion of the toxicity reduction confirmation.

4. Within 60 days of completion of the toxicity identification or the source identification phase of the TRE, the permittee shall submit to the Department a plan, schedule and completion date for implementing those measures necessary to eliminate acute toxicity, an LC50 greater than 100%, and/or eliminate chronic toxicity, an IC25 greater than the in-stream waste concentration (IWC). The implementation of these measures shall begin immediately upon submission of this plan.

5. Within 60 days of completing the implementation of the control measures to eliminate or reduce toxicity, the permittee shall submit to the Department for approval a study plan to confirm the elimination or reduction of toxicity by using biomonitoring.

6. If, for any reason, the implemented measures do not result in compliance with the Department's toxicity limitations, the permittee shall continue the TRE and a Whole Effluent Toxicity (WET) permit limit and a compliance schedule will be required.

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7. All TRE-related materials shall be submitted electronically to the Department if the permittee has already been approved for the NetDMR tool. The material shall be attached as a separate single file and labeled as “TRE” in the NetDMR tool. Otherwise, the permittee shall submit all pertinent physical documents to:

Attention: Whole Effluent Toxicity Coordinator Compliance Program

Water and Science Administration Maryland Department of the Environment

Montgomery Park Business Center 1800 Washington Boulevard, Suite 420

Baltimore, MD 21230-1708

The permittee shall notify the Department at the above address or via email at mde.biomonitoring@maryland.gov immediately upon electronic submission of TRE material through NetDMR tool.

F. Toxic Chemical Testing

1. Concurrent with the biomonitoring study plan, the permittee shall submit to the Department for approval, a study plan to perform two sets of analytical testing for toxic chemicals.

2. The toxic chemical testing study plan shall include a description of:

a. sampling methods;

b. analytical methods;

c. practical detection levels; and

d. quality control procedures.

3. Concurrently with each whole effluent toxicity test (Special Condition II.D.2), the permittee shall also perform the analytical testing for toxic chemicals identified in the Department's "Toxic Pollutant Monitoring Protocol and Reporting Requirements for Toxic Chemical Testing Analytical Data"(09/18/2017).

4. Toxic chemical testing shall be performed in accordance with 40 CFR Part 136 and the Department-approved toxic chemical testing plan. Also, when analyzing effluent samples for Total Polychlorinated Biphenyls (Total PCBs) using Method 1668 A or C, the total PCBs concentration is the summation of all individually measured congeners. Both the individual congeners and the total PCBs concentrations shall be reported. Grab samples must be used for cyanide, Permit No. 17-DP-2787 (NPDES MD0020851) Page No. 20 of 37 phenols, and volatile organic compounds. All other pollutants shall be collected using 24-hour flow–proportioned composite samples unless the Department has given prior approval of an alternative sampling type.

5. Substances other than those identified in Section 3 above may be detected in the effluent. If so, the permittee shall identify and quantify the ten present in highest concentration for those compounds for which standards are available.

6. Results of each toxic chemical test performed as per Sections II.F.3 and II.F.4 shall be submitted to the Department with results of the concurrent biomonitoring toxicity test.

7. Toxic chemical testing results shall be reported in accordance with the Department's "Toxic Pollutant Monitoring Protocol and Reporting Requirements for Toxic Chemical Testing Analytical Data"(09/18/2017).

8. If testing is not performed in accordance with the Department's approved study plan, additional testing may be required by the Department.

9. All toxic chemical testing results and related materials shall be submitted electronically to the Department if the permittee has already been approved for the NetDMR tool. The results shall be attached as a separate single file and labeled as “Toxic Chemical Testing Results” in the NetDMR tool. Otherwise, the permittee shall submit all pertinent physical documents to:

Attention: Toxic Chemical Testing Coordinator Compliance Program

Water and Science Administration Maryland Department of the Environment

Montgomery Park Business Center 1800 Washington Boulevard, Suite 420

Baltimore, MD 21230-1708

The permittee shall notify the Department at the above address or via email at mde.biomonitoring@maryland.gov immediately upon electronic submission of results through the NetDMR tool.

G. Specific Facility Operation Requirements

In addition to the facility and quality control conditions required in General Condition III. B.3, the permittee shall also adhere to the appropriate practices, techniques and requirements as established in the most current editions of the following publications:

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1. USDA Beltsville Agricultural Research Center, Operation and Maintenance Manual, West Wastewater Treatment Plant, 1978. Prepared by MCA Engineering Corporation.

2. USDA’s Nuclear Regulatory Commission (NRC) License, Number 19-00915-03, Amendment No. 107, Nuclear Materials Safety Branch, Region I, Pennsylvania, 1996.

3. USDA Beltsville Agricultural Research Center, Procedures for Aqueous Radioactive Waste Disposal. USDA, Radiation Safety Staff, 1999.

4. USDA’s Application for Materials License, Supplemental Sheets. Section 11.2, Disposal by Release into Sanitary Sewage Systems. 1994.

5. USDA Beltsville Agricultural Research Center, Chemical Waste Management Training Manual, 1999. A Guidance Manual for Hazardous Waste Generators, Beltsville, Maryland.

H. Influent Restriction

1. The permittee shall notify the Department, in writing, prior to the acceptance of non-domestic (industrial) wastewater from any significant industrial user.

2. The permittee shall take all appropriate measures to prohibit the introduction into the sanitary sewer, by the permittee and any users of the USDA- BARC Wastewater Treatment Plants, of any radioactive wastes or isotopes of such half-life or concentration as to exceed limits established by applicable local, State or Federal regulations, including 10 CFR Part 20.2003.

3. The permittee shall report the quantity of any radioactive wastes or isotopes that are discharged into the sanitary sewer by the permittee or its users on the Radioactive Waste survey form (MDE/WMA /PER.066). The form, completed by the permittee and each user of the Wastewater Treatment Plant, shall be sent to the department by February 15th of each year.

4. The permittee shall monitor its effluent for pH, cyanide, arsenic, cadmium, lead, mercury, nickel, silver, zinc, heptachlor epoxide and TTO once per year in accordance with the current Maryland Department of the Environment Water Management Administration Toxic Pollutant Analytical Protocol.

5. The permittee shall send all reporting required under this section to:

Maryland Department of the Environment WSA - Municipal Surface Discharge Permit Division

Pretreatment Section 1800 Washington Boulevard, Suite 455

Baltimore, Maryland 21230-1708

Abubaker.Ashiwaya Highlight

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I. Outfall 001 (Abandoned)

Outfall 001 (Abandoned) is the abandoned discharge outfall to the unnamed tributary to Little Paint Branch from the final chlorination/dechlorination and aeration tank that collected treated wastewater from the spay irrigation-overland flow fields. This permit does not authorized wastewater discharge through Outfall 001; wastewater discharge through Outfall 001 is prohibited.

J. 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…