NHampNPDESpermit.pdf 2008 Reissuance, Page 1 of 15
NPDES No. MA0101818
AUTHORIZATION TO DISCHARGE UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of the Federal Clean Water Act as amended, (33 U.S.C. ''1251 et
seq.; the "CWA"), and the Massachusetts Clean Waters Act, as amended, (M.G.L. Chap. 21, ''26-53),
City of Northampton
Board of Public Works
is authorized to discharge from the facility located at
Northampton Wastewater Treatment Plant
33 Hockanum Road
Northampton, MA 01060
to receiving water named
Connecticut River (Connecticut River Watershed – MA34-04E)
in accordance with effluent limitations, monitoring requirements and other conditions set forth herein.
This permit shall become effective December 1, 2008.
This permit and the authorization to discharge expire at midnight, November 30, 2013.
This permit supersedes the permit issued on May 23, 2002 and expired September 30, 2005.
The Town of Williamsburg is a co-permittee for Part 1.B., Unauthorized Discharges, and Part 1.C.,
Operation and Maintenance of the Sewer System, which includes conditions pertaining to the
collection system owned and operated by Williamsburg. The responsible Town authority is:
Williamsburg Water and Sewer Commission
P. O. Box 447/141 Main St.
Haydenville, MA 01039
This permit consists of 15 pages in Part I including effluent limitations, monitoring requirements,
Attachment A (Freshwater Acute WET Protocol), Attachment B (Pretreatment Reassessment Form),
Attachment C (Pretreatment Annual Report), and 25 pages in Part II including Standards Conditions
and Definitions.
Signed this 30th day of September, 2008
/S/ SIGNATURE ON FILE
_________________________ __________________________
Director Director
Office of Ecosystem Protection Division of Watershed Management
Environmental Protection Agency Department of Environmental Protection
Boston, MA Commonwealth of Massachusetts
Boston, MA
.
2008 Reissuance, Page 2 of 15 NPDES No. MA0101818 Part I.A. 1. During the period beginning the effective date and lasting through expiration, the permittee is authorized to discharge treated effluent from outfalls 001 and 002* to the Connecticut River and Old Mill River respectively. Such discharge shall be limited and monitored by the permittee as specified below. EFFLUENT CHARACTERISTIC EFFLUENT LIMITS MONITORING REQUIREMENTS Mass Limits Concentration Limits PARAMETER AVERAGE MONTHLY AVERAGE WEEKLY MAXIMUM DAILY AVERAGE MONTHLY AVERAGE WEEKLY MAXIMUM DAILY MEASUREMENT FREQUENCY SAMPLE TYPE3 FLOW1 *** *** *** 8.6 MGD *** Report MGD CONTINOUS RECORDER FLOW1 *** *** *** Report MGD *** Report MGD CONTINOUS RECORDER BOD5 2 2152 lbs/Day 978 kgs/Day 3228 lbs/Day 1467 kgs/Day Report 30 mg/l 45 mg/l Report mg/l 2/WEEK 24-HOUR COMPOSITE4 TSS2 2152 lbs/Day 978 kgs/Day 3228 lbs/Day 1467 kgs/Day Report 30 mg/l 45 mg/l Report mg/l 2/WEEK 24-HOUR COMPOSITE4 pH RANGE5 6.0 - 8.3 SU SEE PERMIT PAGE 6 OF 15, PARAGRAPH I.A.2.b 1/DAY GRAB FECAL COLIFORM5, 6 (April 1- October 31) *** *** *** 200 cfu/100 ml *** 400 cfu/100 ml 2/WEEK GRAB E- coli,5,6 (April 1- October 31) *** *** *** 126 cfu/100 ml *** 409 cfu/100 ml 2/WEEK GRAB CHLORINE, TOTAL RESIDUAL6, 7 (April 1- October 31) *** *** *** 1.0 mg/l *** 1.0 mg/l 1/DAY (when in use) GRAB * Discharges through Outfall 002 are comprised of flow diverted after the last treatment process, but prior to pumps serving Outfall 001. The sampling locations specified in Footnote 3 (found on Page 4 of this permit) are representative of both outfalls, therefore, additional sampling will not be required at Outfall 002 except: The permittee shall report with each monthly Discharge Monitoring Report, the date(s) of each Outfall 002 activation and the estimated flow from Outfall 002 on such dates.
2008 Reissuance, Page 3 of 15 NPDES No. MA0101818 Part I.A. Continued PARAMETER AVERAGE MONTHLY AVERAGE WEEKLY MAXIMUM DAILY AVERAGE MONTHLY AVERAGE WEEKLY MAXIMUM DAILY MEASUREMENT FREQUENCY SAMPLE TYPE3 TOTAL NITROGEN8 Report lbs/Day *** Report lbs/Day Report mg/l *** Report mg/l 1/Week 24-HOUR COMPOSITE4 TOTAL NITRITE + NITRATE *** *** *** Report mg/l *** Report mg/l 1/Week 24-HOUR COMPOSITE4 TOTAL KJELDAHL NITROGEN *** *** *** Report mg/l *** Report mg/l 1/Week 24-HOUR COMPOSITE4 TOTAL NITROGEN8 (influent) Report lbs/Day *** Report lbs/Day Report mg/l *** Report mg/l 1/Week 24-HOUR COMPOSITE4 TOTAL NITRITE + NITRATE (Influent) *** *** *** Report mg/l *** Report mg/l 1/Week 24-HOUR COMPOSITE4 TOTAL KJELDAHL NITROGEN (Influent) *** *** *** Report mg/l *** Report mg/l 1/Week 24-HOUR COMPOSITE4 TOTAL AMMONIA AS N *** *** *** Report mg/l *** Report mg/l 1/Week 24-HOUR COMPOSITE4 WET9, 10, 11 ACUTE LC50 ≥ 50% 2/YEAR 24-HOUR COMPOSITE4
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NPDES No. MA0101818
Footnotes:
1. Report annual average, monthly average, and the maximum daily flow. The limit is an
annual average, which shall be reported as a rolling average. The value will be
calculated as the arithmetic mean of the monthly average flow for the reporting month
and the monthly average flows of the previous eleven months.
2. Sampling required for influent and effluent.
3. A routine sampling program shall be developed in which samples are taken at the same
location, same time and same days of the week each month. Occasional deviations from
the routine sampling program are allowed, but the reason for the deviation shall be
documented in correspondence appended to the applicable discharge monitoring report.
All samples shall be tested using the analytical methods found in 40 CFR '136, or
alternative methods approved by EPA in accordance with the procedures in 40 CFR
'136. All samples shall be 24 hour composites unless specified as a grab sample in 40
CFR '136.
All required effluent samples shall be collected at the point specified herein. Any change
in sampling location must be reviewed and approved in writing by EPA and MassDEP
PARAMETER SAMPLE LOCATION
FLOW Recorder in the Parshall Flume
Calculate flow for Outfall 002 each activation day
and report with the monthly Discharge Monitoring
Report
BOD5 and TSS Between Parshall Flume and Comminutor (Influent)
Plant Water Line before strainer (Effluent) pH RANGE, FECAL COLIFORM,
E.-COLI, CHLORINE RESIDUAL,
TOTAL AMMONIA AS N,
TOTAL KJELDAHL NITROGEN,
TOTAL NITRITE, TOTAL
NITRATE
and WHOLE EFFLUENT
TOXICITY
Plant Water Line before strainer
WET Dilution Water: Dirt road across from corn field
on West bank of the CT River -
(42 18’ 13.709” N/72 36’ 23.649”W)
4. 24-hour composite samples will consist of at least twenty four (24) grab samples taken
during one consecutive 24 hour period, either collected at equal intervals and combined
proportional to flow or continuously collected proportionally to flow.
5. Required for State Certification.
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NPDES No. MA0101818
6. The average monthly limits for fecal coliform and E .coli are expressed as geometric
means. Fecal coliform sampling and E. coli sampling shall be done concurrently.
The fecal coliform limits and monitoring requirements shall end one year after the
effective date of this permit.
The E. coli limits shall go into effect one year after the effective date of this permit;
the monitoring requirements go into effect upon the effective date of the permit.
A total residual chlorine sample shall be taken at the same time as E. coli and fecal
coliform samples.
7. The chlorination system shall have alarm(s) to indicate system interruptions or
malfunctions. Any interruption or malfunction of the chlorine dosing system that may
result in inadequate disinfection or excessive levels of chlorine in the final effluent shall
be reported with the monthly DMRs. The report shall include the date and time of the
interruption or malfunction, the nature of the problem, and the estimated amount of time
that the reduced/excessive levels of chlorine occurred. Also, the permittee must address
steps taken to prevent future malfunctions of the same nature.
Whenever more than one grab sample is taken per day, the monthly DMR shall include
an attachment documenting the individual grab sample results for that day, including the
date and time of each sample, and a summary of any operational modifications
implemented in response to sample results. All test results shall be used in the
calculation and reporting of the monthly average and maximum daily data submitted on
the DMR (see Part II. Section D.1.d.(2)).
8. See Part I.F, Special Conditions, for requirements to evaluate and implement
optimization of nitrogen removal.
9. The permittee shall conduct acute toxicity tests two (2) times per year using a single
species, the daphid, Ceriodaphnia dubia. Toxicity test samples shall be collected during
the months of June and September. The test results shall be submitted by the last day of
the month following the completion of the test. The results are due by July 31 and
October 31, respectively. The permittee shall collect the samples during same week of
each month for the duration of the permit. The tests must be performed in accordance
with test procedures and protocols specified in Attachment A of this permit.
Test Dates
Submit Results
By:
Test Species
Acute Limit
LC50
June
September
July 31
October 31
Ceriodaphnia dubia
$ 50%
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NPDES No. MA0101818
10. The LC50 is the concentration of effluent which causes mortality to 50% of the test
organisms. Therefore, a 50% limit means that a sample of 50% effluent shall cause no
more than a 50% mortality rate.
11. If toxicity test(s) using receiving water as diluent show the receiving water to be toxic or
unreliable, the permittee shall follow procedures outlined in Attachment A, Section IV,
DILUTION WATER in order to obtain permission to use an alternate dilution water. In
lieu of individual approvals for alternate dilution water required in Attachment A, EPA-
New England has developed a Self-Implementing Alternative Dilution Water Guidance
document (called AGuidance Document@) which may be used to obtain automatic
approval of an alternate dilution water, including the appropriate species for use with that
water. If this Guidance document is revoked, the permittee shall revert to obtaining
approval as outlined in Attachment A. The AGuidance Document@ has been sent to all
permittees with their annual set of DMRs and Revised Updated Instructions for
Completing EPA=s Pre-Printed NPDES Discharge Monitoring Report (DMR) Form 3320-
1 and is not intended as a direct attachment to this permit. Any modification or
revocation to this AGuidance Document@ will be transmitted to the permittees as part of
the annual DMR instruction package. However, at any time, the permittee may choose to
contact EPA-New England directly using the approach outlined in Attachment A.
Part I.A.
2. a. The discharge shall not cause a violation of the water quality standards of the
receiving waters.
b. The pH of the effluent shall not be less than 6.0 nor greater than 8.3 standard
units, at any time.
c. The discharge shall not cause objectionable discoloration of the receiving waters.
d. The effluent shall contain neither visible oil sheen, foam, nor floating solids at
any time.
e. The permittee's treatment facility shall maintain a minimum of 85 percent
removal of both total suspended solids and biochemical oxygen demand. The
percent removal shall be based on monthly average values.
f. The results of sampling for any parameter done in accordance with EPA approved
methods above its required frequency must also be reported.
g. The permittee shall minimize the use of chlorine while maintaining adequate
bacterial control.
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NPDES No. MA0101818
h. If the average annual flow in any calendar year exceeds 80% of the facility’s
design flow, the permittee shall submit a report to MassDEP by March 31 of the
following calendar year describing plans for further flow increases and discuss
how the permittee will remain in compliance with the effluent limitations in the
permit.
3. All POTWs must provide adequate notice to the Director of the following:
a. Any new introduction of pollutants into that POTW from an indirect discharger in
a primary industry category discharging process water; and
b. Any substantial change in the volume or character of pollutants being introduced
into that POTW by a source introducing pollutants into the POTW at the time of
issuance of the permit.
c. For purposes of this paragraph, adequate notice shall include information on:
(1) the quantity and quality of effluent introduced into the POTW; and
(2) any anticipated impact of the change on the quantity or quality of effluent to
be discharged from the POTW.
4. Prohibitions Concerning Interference and Pass Through:
a. Pollutants introduced into a POTW by a non-domestic source (user) shall not pass
through the POTW or interfere with the operation or performance of the works.
5. Toxics Control
a. The permittee shall not discharge any pollutant or combination of pollutants in
toxic amounts.
b. Any toxic components of the effluent shall not result in any demonstrable harm to
aquatic life or violate any state or federal water quality standard which has been
or may be promulgated. Upon promulgation of any such standard, this permit
may be revised or amended in accordance with such standards.
6. Numerical Effluent Limitations for Toxicants
EPA or MassDEP may use the results of the toxicity tests and chemical analyses
conducted pursuant to this permit, as well as national water quality criteria developed
pursuant to Section 304(a)(1) of the Clean Water Act (CWA), state water quality criteria,
and any other appropriate information or data, to develop numerical effluent limitations
for any pollutants, including but not limited to those pollutants listed in Appendix D of
40 CFR Part 122.
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Part I.B. UNAUTHORIZED DISCHARGES
The permittee is authorized to discharge only in accordance with the terms and conditions of this
permit and only from the outfalls listed in Part I.A.1. of this permit. Discharges of wastewater
from any other point sources, including sanitary sewer overflows (SSOs) are not authorized by
this permit and shall be reported in accordance with Section D.1.e.(1) of the General
Requirements of this permit (Twenty-four hour reporting). [Note: SSO Reporting Form (which
includes MassDEP Regional Office telephone numbers) for submittal of written report to
MassDEP is available on-line at http://www.mass.gov/dep/water/approvals/surffms.htm#sso.]
Part I.C. OPERATION AND MAINTENANCE OF THE SEWER SYSTEM
Operation and maintenance of the sewer system shall be in compliance with the General
Requirements of Part II and the following terms and conditions:
1. Maintenance Staff
The permittee and co-permittee shall provide an adequate staff to carry out the operation,
maintenance, repair, and testing functions required to ensure compliance with the terms and
conditions of this permit.
2. Preventative Maintenance Program
The permittee and co-permittee shall maintain an ongoing preventative maintenance program to
prevent overflows and bypasses caused by malfunctions or failures of its sewer system
infrastructure. The program shall include an inspection program designed to identify all
potential and actual unauthorized discharges.
3. Infiltration/Inflow Control Plan:
The permittee and co-permittee shall each develop and implement a plan to control infiltration
and inflow (I/I) to its separate sewer system. The plan shall be submitted to EPA and MassDEP
within six months of the effective date of this permit (see page 1 of this permit for the effective
date) and shall describe the program for preventing infiltration/inflow related effluent limit
violations, and all unauthorized discharges of wastewater, including overflows and by-passes
due to excessive infiltration/inflow.
The plan shall include:
• An ongoing program to identify and remove sources of infiltration and inflow. The
program shall include the necessary funding level and the source(s) of funding.
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NPDES No. MA0101818
• An inflow identification and control program that focuses on the disconnection and
redirection of illegal sump pumps and roof down spouts. Priority should be given to
removal of public and private inflow sources that are upstream from, and potentially
contribute to, known areas of sewer system backups and/or overflows.
• Identification and prioritization of areas that will provide increased aquifer recharge as
the result of reduction/elimination of infiltration and inflow to the system.
• An educational public outreach program for all aspects of I/I control, particularly private
inflow.
Reporting Requirements:
A summary report of all actions taken to minimize I/I during the previous calendar year
shall be submitted to EPA and the MassDEP annually, by March 31. The summary
report shall, at a minimum, include:
• A map and a description of inspection and maintenance activities conducted and
corrective actions taken during the previous year.
• Expenditures for any infiltration/inflow related maintenance activities and corrective
actions taken during the previous year.
• A map with areas identified for I/I-related investigation/action in the coming year.
• A calculation of the annual average I/I and the maximum month I/I for the reporting year.
• A report of any infiltration/inflow related corrective actions taken as a result of
unauthorized discharges reported pursuant to 314 CMR 3.19(20) and reported pursuant to
the Unauthorized Discharges section of this permit.
4. Alternate Power Source
In order to maintain compliance with the terms and conditions of this permit, the permittee shall
continue to provide an alternative power source with which to sufficiently operate its treatment
works (as defined at 40 CFR §122.2).
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NPDES No. MA0101818
Part I.D. INDUSTRIAL PRETREATMENT PROGRAM
1. Limitations for Industrial Users
The permittee shall develop and enforce specific effluent limits (local limits) for Industrial
User(s), and all other users, as appropriate, which together with appropriate changes in the
POTW Treatment Plant's Facilities or operation, are necessary to ensure continued compliance
with the POTW's NPDES permit or sludge use or disposal practices. Specific local limits shall
not be developed and enforced without individual notice to persons or groups who have
requested such notice and an opportunity to respond. Within 120 days of the effective date of
this permit, the permittee shall prepare and submit a written technical evaluation to the EPA
analyzing the need to revise local limits. As part of this evaluation, the permittee shall assess
how the POTW performs with respect to influent and effluent of pollutants, water quality
concerns, sludge quality, sludge processing concerns/inhibition, biomonitoring results, activated
sludge inhibition, worker health and safety and collection system concerns.
In preparing this evaluation, the permittee shall complete and submit the attached form
(Attachment B) with the technical evaluation to assist in determining whether existing local
limits need to be revised. Justifications and conclusions should be based on actual plant data if
available and should be included in the report. Should the evaluation reveal the need to revise
local limits, the permittee shall complete the revisions within 120 days of notification by EPA
and submit the revisions to EPA for approval. The Permittee shall carry out the local limits
revisions in accordance with EPA’s Local Limit Development Guidance (July 2004).
2. Industrial Pretreatment Program
The permittee shall implement the Industrial Pretreatment Program in accordance with the legal
authorities, policies, procedures, and financial provisions described in the permittee's approved
Pretreatment Program, and the General Pretreatment Regulations, 40 CFR 403. At a minimum,
the permittee must perform the following duties to properly implement the Industrial
Pretreatment Program (IPP):
a. Carry out inspection, surveillance, and monitoring procedures which will determine
independent of information supplied by the industrial user, whether the industrial user is
in compliance with the Pretreatment Standards. At a minimum, all significant industrial
users shall be sampled and inspected at the frequency established in the approved IPP but
in no case less than once per year. Adequate records of these actions shall be maintained.
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NPDES No. MA0101818
b. Issue or renew all necessary industrial user control mechanisms within 90 days of their
expiration date or within 180 days after the industry has been determined to be a
significant industrial user.
c. Obtain appropriate remedies for noncompliance by any industrial user with any
pretreatment standard and/or requirement.
d. Maintain an adequate revenue structure for continued implementation of the Pretreatment
Program.
3. The permittee shall provide the EPA and MassDEP with an annual report describing the
permittee's pretreatment program activities for the twelve month period ending 60 days
prior to the due date in accordance with 40 CFR 403.12(i). The annual report shall be
consistent with the format described in Attachment C of this permit and shall be
submitted no later than March 1 of each year.
4. The permittee must obtain approval from EPA prior to making any significant changes to
the industrial pretreatment program in accordance with 40 CFR 403.18(c).
5. The permittee must assure that applicable National Categorical Pretreatment
Standards are met by all categorical industrial users of the POTW. These standards are
published in the Federal Regulations at 40 CFR 405 et. seq.
6. The permittee must modify its pretreatment program, if applicable, to conform to all
changes in the Federal Regulations that pertain to the implementation and enforcement
of the industrial pretreatment program. The permittee must provide EPA, in writing,
within 180 days of this permit's effective date proposed changes, if applicable, to the
permittee's pretreatment program deemed necessary to assure conformity with current
Federal Regulations.
At a minimum, the permittee must address in its written submission the following areas:
(1) proposed changes to the enforcement response plan and (2) recent revisions to the
sewer use ordinances. The permittee will implement these proposed changes pending
EPA Region I's approval under 40 CFR 403.18. This submission is separate and distinct
from any local limits analysis submission described in Part I.B.1.
7. On October 14, 2005 EPA published in the Federal Register final changes to the General
Pretreatment Regulations. The final “Pretreatment Streamlining Rule” is designed to
reduce the burden to industrial users and provide regulatory flexibility in technical and
administrative requirements of industrial users and POTWs.
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NPDES No. MA0101818
Within 90 days of the effective date of this permit, the permittee must submit to EPA all
required modifications of the Streamlining Rule in order to be consistent with the
provisions of the newly promulgated Rule. To the extent that the POTW legal authority is
not consistent with the required changes, they must be revised and submitted to EPA for
review.
Part I.E. SLUDGE CONDITIONS
1. The permittee shall comply with all existing federal and state laws and regulations that
apply to sewage sludge use and disposal practices and with the CWA Section 405(d)
technical standards.
2. The permittee shall comply with the more stringent of either the state or federal (40 CFR
part 503), requirements.
3. The requirements and technical standards of 40 CFR part 503 apply to facilities which
perform one or more of the following use or disposal practices:
a. Land application - the use of sewage sludge to condition or fertilize the soil
b. Surface disposal - the placement of sewage sludge in a sludge-only landfill
c. Sewage sludge incineration in a sludge-only incinerator
4. The 40 CFR part 503 conditions do not apply to facilities which place sludge within a
municipal solid waste landfill. These conditions also do not apply to facilities which do
not dispose of sewage sludge during the life of the permit but rather treat the sludge (e.g.
lagoons- reed beds), or are otherwise excluded under 40 CFR 503.6.
5. The permittee shall use and comply with the attached compliance guidance document to
determine appropriate conditions. Appropriate conditions contain the following
elements:
$ General requirements
$ Pollutant limitations
$ Operational Standards (pathogen reduction requirements and vector attraction
reduction requirements)
$ Management practices
$ Record keeping
$ Monitoring
$ Reporting
Depending upon the quality of material produced by a facility, all conditions may not
apply to the facility.
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6. The permittee shall monitor the pollutant concentrations, pathogen reduction and vector
attraction reduction at the following frequency. This frequency is based upon the volume
of sewage sludge generated at the facility in dry metric tons per year:
Less than 290 1/ year
290 to less than1500 1 /quarter
1500 to less than 15000 6 /year
15000 + 1 /month
7. The permittee shall sample the sewage sludge using the procedures detailed in 40 CFR
503.8.
8. The permittee shall submit an annual report containing the information specified in the
guidance by February 19. Reports shall be submitted to the address contained in the
reporting section of the permit. Sludge monitoring is not required by the permittee when
the permittee is not responsible for the ultimate sludge disposal. The permittee must be
assured that any third party contractor is in compliance with appropriate regulatory
requirements. In such case, the permittee is required only to submit an annual report by
February 19 containing the following information:
C Name and address of contractor responsible for sludge disposal
C Quantity of sludge in dry metric tons removed from the facility by the sludge
contractor
Part I.F. SPECIAL CONDITION
Within one year of the effective date of the permit, the permittee shall complete an evaluation
of alternative methods of operating the existing wastewater treatment facility to optimize the
removal of nitrogen, and submit a report to EPA and MassDEP documenting this evaluation and
presenting a description of recommended operational changes. The methods to be evaluated
include, but are not limited to, operational changes designed to enhance nitrification (seasonal
and year round), incorporation of anoxic zones, septage receiving policies and procedures, and
side stream management. The permittee shall implement the recommended operational changes
in order to maintain the existing mass discharge loading of total nitrogen. The annual average
total nitrogen load from this facility (2004 – 2005) is estimated to be 811 lbs/day.
The permittee shall also submit an annual report to EPA and MassDEP, by February 1 each
year, that summarizes activities related to optimizing nitrogen removal efficiencies, documents
the annual nitrogen discharge load from the facility, and tracks trends relative to the previous
year.
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Part I.G. MONITORING AND REPORTING
1. Reporting
Monitoring results obtained during each calendar month shall be summarized and reported on
Discharge Monitoring Report Form(s) postmarked no later than the 15th day of the following
month.
Signed and dated originals of these, and all other reports required herein, shall be submitted to
the Director and the State at the following addresses:
Environmental Protection Agency
Water Technical Unit (SEW)
P.O. Box 8127
Boston, Massachusetts 02114
The State Agency is:
Massachusetts Department of Environmental Protection
Western Regional Office - Bureau of Resource Protection
436 Dwight Street
Springfield, Massachusetts 01103
Signed and dated Discharge Monitoring Report Forms and toxicity test reports required by this
permit shall also be submitted to the State at:
Massachusetts Department of Environmental Protection
Division of Watershed Management
Surface Water Discharge Permit Program
627 Main Street, 2nd Floor
Worcester, Massachusetts 01608
Any Pretreatment reports required to be submitted in Section I.D, “Industrial Pretreatment
Program” shall be sent to EPA and the State at:
EPA New England
Attn: Justin Pimpare
One Congress Street
Suite 1100 - CMU
Boston, MA 02114
and
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NPDES No. MA0101818
Massachusetts Department of Environmental Protection
Bureau of Waste Prevention
Industrial Wastewater Section
1 Winter Street
Boston, MA 02108
Part I.H. STATE PERMIT CONDITIONS
This Discharge Permit is issued jointly by the U. S. Environmental Protection Agency (EPA) and
the Massachusetts Department of Environmental Protection (MassDEP) under Federal and State
law, respectively. As such, all the terms and conditions of this permit are hereby incorporated
into and constitute a discharge permit issued by the Commissioner of the MassDEP pursuant to
M.G.L. Chap. 21, '43.
Each Agency shall have the independent right to enforce the terms and conditions of this permit.
Any modification, suspension or revocation of this permit shall be effective only with respect to
the Agency taking such action, and shall not affect the validity or status of this permit as issued
by the other Agency, unless and until each Agency has concurred in writing with such
modification, suspension or revocation. In the event any portion of this permit is declared,
invalid, illegal or otherwise issued in violation of State law such permit shall remain in full force
and effect under Federal law as an NPDES Permit issued by the U.S. Environmental Protection
Agency. In the event this permit is declared invalid, illegal or otherwise issued in violation of
Federal law, this permit shall remain in full force and effect under State law as a permit issued by
the Commonwealth of Massachusetts.
Page 1
PERMIT ATTACHMENT B
REASSESSMENT OF TECHNICALLY BASED LOCAL LIMITS
(TBLLs)
POTW Name & Address:
___________________________________________________________________
NPDES PERMIT # :
____________________________________________________________________
Date EPA approved current TBLLs :
____________________________________________________________________
Date EPA approved current Sewer Use Ordinance :
____________________________________________________________________
ITEM I.
In Column (1) list the conditions that existed when your current TBLLs were
calculated. In Column (2), list current conditions or expected conditions at your
POTW. Column (1)
EXISTING TBLLs
Column (2)
PRESENT CONDITIONS
POTW Flow (MGD)
Dilution Ratio or 7Q10
(from NPDES Permit)
SIU Flow (MGD)
Safety Factor N/A
Biosolids Disposal
Method(s)
Page 2
ITEM II.
EXISTING TBLLs POLLUTANT NUMERICAL LIMIT
(mg/l) or (lb/day)
POLLUTANT NUMERICAL LIMIT
(mg/l) or (lb/day)
ITEM III.
Note how your existing TBLLs, listed in Item II., are allocated to your Significant Industrial
Users (SIUs), i.e. uniform concentration, contributory flow, mass proportioning, other.
Please specify by circling.
ITEM IV.
Has your POTW experienced any upsets, inhibition, interference or pass-through from
industrial sources since your existing TBLLs were calculated?
If yes, explain.
______________________________________________________________________
______________________________________________________________________
___________________________________________________________________
Page 3
Has your POTW violated any of its NPDES permit limits and/or toxicity test requirements?
If yes, explain.
____________________________________________________________________
____________________________________________________________________
ITEM V.
Using current POTW influent sampling data fill in Column (1). In Column (2), list your
Maximum Allowable Industrial Headwork Loading (MAIHL) values used to derive your
TBLLs listed in Item II. In addition, please note the Environmental Criteria for which
each MAIHL value was established, i.e. water quality, sludge, NPDES etc. Pollutant Column (1)
Influent Data Analyses
Maximum Average
(lb/day) (lb/day)
Column (2)
MAHL Values Criteria
(lb/day)
Arsenic
Cadmium Chromium
Copper
Cyanide
Lead
Mercury
Nickel
Silver
Zinc
Other (List)
Page 4
ITEM VI.
Using current POTW effluent sampling data, fill in Column (1). In Column (2A) list
what the Water Quality Standards (Gold Book Criteria) were at the time your existing
TBLLs were developed. List in Column (2B) current Gold Book values multiplied by
the dilution ratio used in your new/reissued NPDES permit. Pollutant Column (1)
Effluent Data Analyses
Maximum Average
(ug/l) (ug/l)
Columns
(2A) (2B)
Water Quality Criteria
(Gold Book)
From TBLLs Today
(ug/l) (ug/l)
Arsenic
*Cadmium *Chromium
*Copper
Cyanide
*Lead
Mercury
*Nickel
Silver
*Zinc
Other (List)
*Hardness Dependent (mg/l - CaCO3)
Page 5
ITEM VII.
In Column (1), identify all pollutants limited in your new/reissued NPDES permit. In
Column (2), identify all pollutants that were limited in your old/expired NPDES permit.
Column (1)
NEW PERMIT
Pollutants Limitations
(ug/l)
Column (2)
OLD PERMIT
Pollutants Limitations
(ug/l)
Page 6
ITEM VIII.
Using current POTW biosolids data, fill in Column (1). In Column (2A), list the
biosolids criteria that was used at the time your existing TBLLs were calculated. If
your POTW is planing on managing its biosolids differently, list in Column (2B) what
your new biosolids criteria would be and method of disposal. Column (1)
Pollutant Biosolids Data Analyses
Average
(mg/kg)
Columns
(2A) (2B)
Biosolids Criteria
From TBLLs New
(mg/kg) (mg/kg)
Arsenic
Cadmium Chromium
Copper
Cyanide
Lead
Mercury
Nickel
Silver
Zinc
Molybdenum
Selenium
Other (List)
ATTACHMENT C
NPDES PERMIT REQUIREMENT
FOR
INDUSTRIAL PRETREATMENT ANNUAL REPORT
The information described below shall be included in the pretreatment program annual
reports:
1. An updated list of all industrial users by category, as set forth in 40 C.F.R.
403.8(f)(2)(i), indicating compliance or noncompliance with the
following:
- baseline monitoring reporting requirements for newly promulgated
industries
- compliance status reporting requirements for newly promulgated
industries
- periodic (semi-annual) monitoring reporting requirements,
- categorical standards, and
- local limits;
2. A summary of compliance and enforcement activities during the
preceding year, including the number of:
- significant industrial users inspected by POTW (include inspection
dates for each industrial user),
- significant industrial users sampled by POTW (include sampling
dates for each industrial user),
- compliance schedules issued (include list of subject users),
- written notices of violations issued (include list of subject users),
- administrative orders issued (include list of subject users),
- criminal or civil suits filed (include list of subject users) and,
- penalties obtained (include list of subject users and penalty
amounts);
3. A list of significantly violating industries required to be published
in a local newspaper in accordance with 40 C.F.R. 403.8(f)(2)(vii);
4. A narrative description of program effectiveness including present
and proposed changes to the program, such as funding, staffing,
ordinances, regulations, rules and/or statutory authority;
5. A summary of all pollutant analytical results for influent, effluent,
sludge and any toxicity or bioassay data from the wastewater
treatment facility. The summary shall include a comparison of
influent sampling results versus threshold inhibitory concentrations
for Northampton’s Wastewater Treatment System and effluent
sampling results versus water quality standards. Such a
comparison shall be based on the sampling program described in
the paragraph below or any similar sampling program described in
this Permit.
At a minimum, annual sampling and analysis of the influent and effluent
of the Northampton Wastewater Treatment Plant shall be conducted for
the following pollutants:
a.) Total Cadmium f.) Total Nickel
b.) Total Chromium g.) Total Silver
c.) Total Copper h.) Total Zinc
d.) Total Lead i.) Total Cyanide
e.) Total Mercury .) Total Arsenic
The sampling program shall consist of one 24-hour flow-proportioned
composite and at least one grab sample that is representative of the flows
received by the POTW. The composite shall consist of hourly flow-
proportioned grab samples taken over a 24-hour period if the sample is
collected manually or shall consist of a minimum of 48 samples collected
at 30 minute intervals if an automated sampler is used. Cyanide shall be
taken as a grab sample during the same period as the composite sample.
Sampling and preservation shall be consistent with 40 CFR Part 136.
6. A detailed description of all interference and pass-through that occurred
during the past year;
7. A thorough description of all investigations into interference and pass-
through during the past year;
8. A description of monitoring, sewer inspections and evaluations which
were done during the past year to detect interference and pass-through,
specifying parameters and frequencies;
9. A description of actions being taken to reduce the incidence of significant
violations by significant industrial users; and,
10. The date of the latest adoption of local limits and an indication as to
whether or not the Town is under a State or Federal compliance schedule
that includes steps to be taken to revise local limits.
Required Submissions
This table is a summary of the reports required to be submitted under this NPDES permit
as an aid to the permittee(s). If there are any discrepancies between the permit and this
summary, the permittee(s) shall follow the permit requirements.
Required Report Date Due Submitted to:
Environmental Protection Agency
Water Technical Unit (SEW)
P.O. Box 8127
Boston, MA 02114
The permittee anticipates
replacing chlorine disinfection
with ultraviolet (UV)
disinfection during the
effective period of this permit.
[Footnote 5]
The permittee shall provide
thirty (30) days notice in writing
to both EPA and MasssDEP
prior to switching over from
chlorine to UV. MassDEP
Western Regional Office - Bureau of
Resource Protection
436 Dwight Street
Springfield, Massachusetts 01103
Environmental Protection Agency
Water Technical Unit (SEW)
P.O. Box 8127
Boston, MA 02114
Toxicity test samples shall be
collected during the months of
July and October. [Footnote 7]
The test results shall be
submitted by the last day of the
month following the completion
of the test. The results are due
by August 31 and November 30,
respectively
MassDEP
Division of Watershed Management
Surface Water Discharge Permit
Program
627 Main Street, 2nd Floor
Worcester, MA 01608
If the average annual flow in
any calendar year exceeds 80%
of the facility’s design flow,
the permittee shall submit a
report to MassDEP.
By March 31 of the following
calendar year.
MassDEP
Western Regional Office - Bureau of
Resource Protection
436 Dwight Street
Springfield, Massachusetts 01103
Environmental Protection Agency
Water Technical Unit (SEW)
P.O. Box 8127
Boston, MA 02114
Discharges of wastewater from
any other point sources,
including sanitary sewer
overflows (SSOs) are not
authorized by this permit and
shall be reported in accordance
with Section D.1.e.(1) of the
General Requirements of this
permit. [Part B]
Twenty-four hour reporting.
SSO Reporting Form (which
includes MassDEP Regional
Office telephone numbers) for
submittal of written report to
MassDEP is available on-line at
http://www/mass/.gov/dep/water
/approvals/surffms.htm#sso
MassDEP
Western Regional Office - Bureau of
Resource Protection
436 Dwight Street
Springfield, Massachusetts 01103
Environmental Protection Agency
Water Technical Unit (SEW)
P.O. Box 8127
Boston, MA 02114
MassDEP
Western Regional Office - Bureau of
Resource Protection
436 Dwight Street
Springfield, Massachusetts 01103
A summary report of all
actions taken to minimize
I/I during the previous
calendar year shall be
submitted to EPA and the
MassDEP [Part.C3]
Submit annually, by March 31.
MassDEP
Division of Watershed Management
Surface Water Discharge Permit
Program
627 Main Street, 2nd Floor
Worcester, MA 01608
Environmental Protection Agency
Water Technical Unit (SEW)
P.O. Box 8127
Boston, MA 02114
MassDEP
Western Regional Office - Bureau of
Resource Protection
436 Dwight Street
Springfield, Massachusetts 01103
The permittee shall submit
an annual report containing
the information specified in
the Sludge Guidance.
[Part.D.8]
By February 19, each year, the
permittee shall submit the sludge
report for the previous year.
MassDEP
Division of Watershed Management
Surface Water Discharge Permit
Program
627 Main Street, 2nd Floor
Worcester, MA 01608
Environmental Protection Agency
Water Technical Unit (SEW)
P.O. Box 8127
Boston, MA 02114
MassDEP
Western Regional Office - Bureau of
Resource Protection
436 Dwight Street
Springfield, Massachusetts 01103
The permittee shall
complete an evaluation of
alternative methods of
operating the existing
wastewater treatment
facility to optimize the
removal of nitrogen, and
submit a report to EPA and
MassDEP documenting
this evaluation and
presenting a description of
recommended operational
changes
Within one year of the effective
date of the permit.
MassDEP
Division of Watershed Management
Surface Water Discharge Permit
Program
627 Main Street, 2nd Floor
Worcester, MA 01608
Environmental Protection Agency
Water Technical Unit (SEW)
P.O. Box 8127
Boston, MA 02114
MassDEP
Western Regional Office - Bureau of
Resource Protection
436 Dwight Street
Springfield, Massachusetts 01103
The permittee shall submit a
report that summarizes
activities related to
optimizing nitrogen removal
efficiencies, documents the
annual nitrogen discharge
load from the facility, and
tracks trends relative to the
previous year. [PART E]
The annual report to be
submitted by February 1
each year.
MassDEP
Division of Watershed Management
Surface Water Discharge Permit Program
627 Main Street, 2nd Floor
Worcester, MA 01608
Environmental Protection Agency
Water Technical Unit (SEW)
P.O. Box 8127
Boston, MA 02114
MassDEP
Western Regional Office - Bureau of
Resource Protection
436 Dwight Street
Springfield, Massachusetts 01103
Monitoring results obtained
during each calendar month
shall be summarized and
reported on Discharge
Monitoring Report Form(s)
[PART F.] Occasional
deviations from the routine
sampling program are
allowed, but the reason for
the deviation shall be
documented in
correspondence appended to
the applicable discharge
monitoring report. [Footnote
3]
Discharge Monitoring Report
Form(s) shall be postmarked
no later than the 15th day of
the following month.
MassDEP
Division of Watershed Management
Surface Water Discharge Permit Program
627 Main Street, 2nd Floor
Worcester, MA 01608
Northampton Discharge Monitoring Report Data – MA0101818 Fact Sheet Attachment A Date Flow Ave Monthly Flow Max Daily BOD Ave Monthly BOD Max Day BOD Ave Monthly TSS Ave Monthly TSS Day Max TSS Ave Monthly BOD % Removal TSS % Removal Kjeldahl Nitrogen Ave Mo Nitrate+ Nitrite Ave Mo 1/31/2006 4.7 Mgal/d 13.7 Mgal/d 21.3 mg/L 83.1 mg/L 1,326.7 lb/d 10.8 mg/L 36 mg/L 648.2 lb/d 79 % 82.7 % 21 mg/L 0.4 mg/L 2/28/2006 41.8 Mgal/d 9.4 Mgal/d 16.4 mg/L 26.4 mg/L 651.3 lb/d 9.2 mg/L 18 mg/L 372.8 lb/d 90 % 90.9 % 8.6 mg/L 0.45 mg/L 3/31/2006 4.7 Mgal/d 4.2 Mgal/d 15.8 mg/L 29.1 mg/L 505.4 lb/d 6.4 mg/L 12 mg/L 202 lb/d 93 % 95.6 % 22 mg/L 0.51 mg/L 4/30/2006 4.5 Mgal/d 4.7 Mgal/d 15.2 mg/L 27.7 mg/L 520.7 lb/d 5.1 mg/L 17 mg/L 173.5 lb/d 93.4 % 96.5 % 22 mg/L 0.33 mg/L 5/31/2006 4.5 Mgal/d 5 Mgal/d 15.9 mg/L 30 mg/L 642.6 lb/d 9.9 mg/L 37 mg/L 392.1 lb/d 91.8 % 94.8 % 20 mg/L 0.26 mg/L 6/30/2006 4.6 Mgal/d 6.1 Mgal/d 12 mg/L 21 mg/L 472.3 lb/d 3.9 mg/L 10 mg/L 154.4 lb/d 93.4 % 97.3 % 15 mg/L 1.8 mg/L 7/31/2006 4.6 Mgal/d 12.8 Mgal/d 6.6 mg/L 10.4 mg/L 208.7 lb/d 2.3 mg/L 4 mg/L 72.1 lb/d 97.3 % 98.8 % 3.8 mg/L 8.7 mg/L 8/31/2006 4.6 Mgal/d 4.3 Mgal/d 11.7 mg/L 27.5 mg/L 322.4 lb/d 4.5 mg/L 14.5 mg/L 123 lb/d 96 % 97.9 % 7.4 mg/L 7.7 mg/L 9/30/2006 4.6 Mgal/d 4 Mgal/d 10.4 mg/L 14.7 mg/L 311.5 lb/d 3 mg/L 5 mg/L 89.8 lb/d 96.2 % 98.6 % 2 mg/L 7.3 mg/L 10/31/2006 4.4 Mgal/d 7.3 Mgal/d 6.1 mg/L 9.4 mg/L 197.6 lb/d 3 mg/L 5 mg/L 96.8 lb/d 97.3 % 98.3 % 8 mg/L 6.5 mg/L 11/30/2006 4.4 Mgal/d 6.7 Mgal/d 6.3 mg/L 12.3 mg/L 285.7 lb/d 2.9 mg/L 6.5 mg/L 133.3 lb/d 95.8 % 97.6 % 4.2 mg/L 6.1 mg/L 12/31/2006 4.4 Mgal/d 4.6 Mgal/d 9 mg/L 19 mg/L 300 lb/d 5.6 mg/L 11 mg/L 184 lb/d 95.2 % 96 % 3.5 mg/L 6 mg/L 1/31/2007 4.2 Mgal/d 6 Mgal/d 16.6 mg/L 22.4 mg/L 591.2 lb/d 9.9 mg/L 18 mg/L 357.9 lb/d 91.6 % 93.1 % 4.5 mg/L 6.2 mg/L 2/28/2007 4.1 Mgal/d 4.1 Mgal/d 19.1 mg/L 29.7 mg/L 519.2 lb/d 12 mg/L 19 mg/L 328.3 lb/d 93.2 % 93.4 % 4.5 mg/L 6.2 mg/L 3/31/2007 4.1 Mgal/d 7.3 Mgal/d 13.8 mg/L 24.8 mg/L 509.2 lb/d 8.3 mg/L 17.5 mg/L 302.4 lb/d 89.9 % 92.3 % 28 mg/L 0.2 mg/L 4/30/2007 4.4 Mgal/d 15.5 Mgal/d 14.1 mg/L 18.5 mg/L 842.6 lb/d 7 mg/L 13.5 mg/L 444.5 lb/d 85.4 % 89.5 % 13 mg/L 0.11 mg/L 5/31/2007 5 Mgal/d 5.5 Mgal/d 13.4 mg/L 24.6 mg/L 527 lb/d 13.1 mg/L 32 mg/L 505.2 lb/d 93.2 % 91 % 14 mg/L 0.11 mg/L 6/30/2007 4.4 Mgal/d 7 Mgal/d 10.2 mg/L 13.3 mg/L 379.9 lb/d 7.8 mg/L 19 mg/L 317 lb/d 96 % 96.3 % 15 mg/L 0.62 mg/L 7/31/2007 4.4 Mgal/d 7.9 Mgal/d 11.1 mg/L 28.7 mg/L 368.9 lb/d 10.8 mg/L 29 mg/L 361.6 lb/d 96.7 % 96.5 % 11 mg/L 5.1 mg/L 8/31/2007 4.4 Mgal/d 4.9 Mgal/d 10.1 mg/L 15.2 mg/L 317.8 lb/d 5.9 mg/L 7 mg/L 189.9 lb/d 96.8 % 97 % 6.1 mg/L 4.3 mg/L 9/30/2007 4.4 Mgal/d 7.6 Mgal/d 12.8 mg/L 26.4 mg/L 393.4 lb/d 9.6 mg/L 27 mg/L 301.2 lb/d 96.1 % 96.2 % 5.8 mg/L 5.8 mg/L 10/31/2007 4.4 Mgal/d 4.3 Mgal/d 11.6 mg/L 15.1 mg/L 327.2 lb/d 7.1 mg/L 11 mg/L 202.4 lb/d 96.3 % 96.9 % 11 mg/L 3.4 mg/L 11/30/2007 4.2 Mgal/d 4.3 Mgal/d 11.5 mg/L 19 mg/L 321.7 lb/d 2.3 mg/L 4 mg/L 65.1 lb/d 96.1 % 99 % 22 mg/L 3.6 mg/L 12/31/2007 4.1 Mgal/d 4.2 Mgal/d 9.3 mg/L 14.5 mg/L 243.3 lb/d 4.9 mg/L 7 mg/L 130.2 lb/d 95.8 % 97.2 % 14 mg/L 5.1 mg/L
Fact Sheet Attachment A Continued Date pH Min pH Max Date Total PhosphorusDate TRC Max Day Date Fecal Coliform Max Day Date CeriodaphniaAcute LC50 1/31/2006 6.7 SU 7.05 SU 3/31/2006 2.5 mg/L 4/30/2006 0.75 mg/L 4/30/2006 1.33 #/100mL 6/30/2006 100% 2/28/2006 6.65 SU 7 SU 6/30/2006 7.1 mg/L 5/31/2006 0.99 mg/L 5/31/2006 0.67 #/100mL 9/30/2006 100% 3/31/2006 6.73 SU 7.02 SU 9/30/2006 0.95 mg/L 6/30/2006 0.79 mg/L 6/30/2006 1.14 #/100mL 6/30/2007 100% 4/30/2006 6.73 SU 7.02 SU 12/31/2006 4.9 mg/L 7/31/2006 0.89 mg/L 7/31/2006 2.28 #/100mL 9/30/2007 100% 5/31/2006 6.55 SU 6.98 SU 3/31/2007 7.6 mg/L 8/31/2006 0.86 mg/L 8/31/2006 20.67 #/100mL 6/30/2006 6.45 SU 6.94 SU 6/30/2007 2.9 mg/L 9/30/2006 0.85 mg/L 9/30/2006 5.3 #/100mL 7/31/2006 5.99 SU 6.65 SU 9/30/2007 1.3 mg/L 10/31/2006 0.73 mg/L 10/31/2006 2 #/100mL 8/31/2006 5.93 SU 6.55 SU 12/31/2007 0.12 mg/L 4/30/2007 0.51 mg/L 4/30/2007 84.3 #/100mL 9/30/2006 5.8 SU 6.54 SU 5/31/2007 0.79 mg/L 5/31/2007 8 #/100mL 10/31/2006 6.03 SU 6.62 SU 6/30/2007 0.97 mg/L 6/30/2007 10.3 #/100mL 11/30/2006 5.8 SU 6.5 SU 7/31/2007 0.86 mg/L 7/31/2007 31.1 #/100mL 12/31/2006 5.77 SU 6.36 SU 8/31/2007 0.94 mg/L 8/31/2007 36 #/100mL 1/31/2007 5.76 SU 6.67 SU 9/30/2007 0.65 mg/L 9/30/2007 74.3 #/100mL 2/28/2007 6.55 SU 6.72 SU 10/31/2007 1 mg/L 10/31/2007 139 #/100mL 3/31/2007 6.43 SU 6.85 SU 4/30/2007 6.33 SU 6.56 SU 5/31/2007 6.39 SU 7.21 SU 6/30/2007 6.5 SU 7.02 SU 7/31/2007 5.88 SU 7.08 SU 8/31/2007 6.02 SU 6.71 SU 9/30/2007 6 SU 6.71 SU 10/31/2007 6.04 SU 6.76 SU 11/30/2007 6.08 SU 6.76 SU 12/31/2007 5.9 SU 6.72 SU