6100-29 Proposed Discharge Monitoring Report (DMR) Form

2026 MSGP

Appendix M – Discharge Monitoring Report (DMR) From
NOTE: EPA proposes the text in this Appendix as part of the Proposed 2026 MSGP.
Proposed Appendix M – Discharge Monitoring Report (DMR) Form

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Part 7.2 requires you to use the electronic DMR system to prepare and submit your Discharge Monitoring
Report (DMR) form. However, if you are given approval by the EPA Regional Office to use a paper DMR
form, and you elect to use it, you must complete and submit the following form.

NPDES Form 6100-29

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2026 MSGP

Appendix M – Discharge Monitoring Report (DMR) From
Instructions for Completing EPA Form 6100-29
Discharge Monitoring Report (DMR) for Stormwater Discharges
Associated with Industrial Activity Under the NPDES Multi-Sector General Permit
This Form Replaces Form 6100-29 (03/21)

Who Must Submit a Discharge Monitoring Report to EPA?
Facilities covered under EPA’s NPDES Stormwater Multi-Sector
General Permit (MSGP or permit) that are required to monitor
pursuant to Parts 4.2 and 8 of the permit must submit Discharge
Monitoring Reports (DMRs) consistent with the reporting
requirements specified in Part 7.3 of the permit.

Reporting that your site status has changed from inactive to
active and/or there are industrial materials or activities exposed
to stormwater: Indicates that your facility is currently active
(See Part 4.2.1.3 of the permit for more information). If you
select this reason you are required to complete all Sections of
the form and include date of status change in the comment
field in Section F.4.
Section C. Facility Operator Information.
Provide the legal name of the person, firm, public organization, or
any other entity that operates the facility for which this DMR is being
submitted. An operator of a facility is the legal entity that controls
the operation of the facility. Refer to Appendix A of the permit for
the definition of “operator”. Provide the operator’s mailing address,
phone number, and e-mail. The operator information in this Section
should match the operator information provided on your NOI form.

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Completing the Form
Obtain and read a copy of the 2026 MSGP, viewable at
https://www.epa.gov/npdes/stormwater-discharges-industrialactivities. To complete this form, type or print, using
uppercase letters, in the appropriate areas only. Please place
each character between the marks. Abbreviate if necessary to
stay within the number of characters allowed for each item. Use
only one space for breaks between words, but not for
punctuation marks unless they are needed to clarify your
response. Please submit original document with signature in ink
- do not send a photocopied signature. Photocopy your DMR
form for your records before you send the completed original form
to the appropriate address.

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Form OMB No. 2040-NEW

Provide the name, organization, phone number, an e-mail address
for the person who prepared this DMR form.

Section D. Facility Information
Enter the official or legal name and complete street address,
including city, state, ZIP code, and county or similar government
subdivision of the facility. If the facility lacks a street address,
indicate the general location of the facility (e.g., Intersection of
State Highways 61 and 34). Complete facility information must be
provided for the DMR form to be valid. The facility information in
this Section should match the facility information provided on
your NOI form.

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Section A. Approval to Use Paper DMR Form
You must indicate whether you have been granted a waiver from
electronic reporting from the EPA Regional Office. Note that you
are not authorized to use this paper DMR form unless the EPA
Regional Office has approved its use. Where you have obtained
approval to use this form, indicate the waiver that you have been
granted, the name of the EPA staff person who granted the waiver,
and the date that approval was provided. See
https://www.epa.gov/npdes/contact-us-stormwater for a list of
EPA Regional Office contacts.

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Section B. Permit Information
Provide the NPDES ID (i.e., NOI tracking number) assigned to the
facility for which this DMR is being submitted.
Indicate your reason(s) for submitting this DMR by checking all
boxes that apply. The reasons for submission are defined as follows:
• Submitting monitoring data: For each storm sampled, submit
one DMR form with data for all discharge points sampled.
Select this reason even if you only have monitoring data for
some of your discharge points (i.e., some discharge points did
not discharge). If you select this reason you are required to
complete all Sections of the form.
• Reporting no discharge for all discharge points for this
monitoring period: Indicates that there were no discharges
from all discharge points during this monitoring period. If you
select this reason you are only required to complete Sections
A, B, C, D, E.1, and G.
• Reporting that your site status has changed to inactive and
unstaffed and there are no industrial materials or activities
exposed to stormwater: Indicates that your facility is currently
inactive and unstaffed and there are no industrial materials or
activities exposed to stormwater (See Part 4.2.1.3 of the permit
for more information). If you select this reason you are only
required to complete Sections A, B, C, D, and F.4 (include date
of status change in comment field).

NPDES Form 6100-29

Section E. Discharge Information.
Indicate the appropriate monitoring period (Quarter 1, 2, 3, or 4)
covered by the DMR. “Alternative” monitoring periods can apply
to facilities located in arid and semi-arid climates, or in areas subject
to snow or prolonged freezing. To use alternative monitoring
periods, you must provide a revised monitoring schedule here. If
using alternative monitoring periods, identify the first day of the
monitoring period through the last day of the monitoring period for
each of the four periods. The dates should be displayed as month
/ day . See Parts 4.1.6 and 4.1.7 of the permit for more information.

If you are submitting benchmark monitoring data, identify if your
facility is required to collect benchmark samples for one or more
hardness-dependent metals (i.e., cadmium, lead, nickel, silver,
and zinc). If you select “yes” to this question provide the hardness
level of the receiving water (in mg/L)). If you select “no” to this
question, you must identify if your facility discharges into any
saltwater receiving waters.
Section F. Monitoring Information
For the reported monitoring event indicate whether the
discharge was from a rainfall or snowmelt event. If you select
“rainfall” then indicate the duration (in hours) of the rainfall event,
rainfall total (in inches) for that rainfall event, and time (in days)
since the previous measurable storm event in line items 2.a-c. For
both rainfall and snowmelt monitoring, you must identify the date
of collection for the monitoring event in column 3.i. of the table. If
the discharge occurs during a period of both rainfall and

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2026 MSGP

Appendix M – Discharge Monitoring Report (DMR) From
Instructions for Completing EPA Form 6100-29
Discharge Monitoring Report (DMR) for Stormwater Discharges
Associated with Industrial Activity Under the NPDES Multi-Sector General Permit
This Form Replaces Form 6100-29 (03/21)

snowmelt, check both the rainfall and snowmelt boxes and report
the appropriate rainfall information in item 2.a-c. To report multiple
monitoring events in the same reporting period, copy this form and
enter each monitoring event separately with data for all discharge
points sampled.

Form OMB No. 2040-NEW

discharge point and any substantially identical discharge points,
or for impaired waters monitoring, the presence of the pollutant is
caused solely by natural background, provided that all of the
conditions in Part 5.2.6.1 are met.
3.k Exceedance due to run-on per Part 5.2.6.2: Check box if you
can demonstrate and obtain EPA agreement that run-on from a
neighboring source (e.g., a source external to your facility) is the
cause of the exceedance, provided that the conditions in Part
5.2.6.2 are met.

If any discharge points are substantially identical, check the box in
3.b and identify the discharge point that the discharge point in 3.a
is substantially identical to. In 3.d – k, you only need to provide
benchmark monitoring data for one of the discharge points if it is
substantially identical.

3.l. Exceedance due to an abnormal event per Part 5.2.6.3: Check
box if one single sampling event is abnormal and you have
immediately documented that the single event was abnormal
and met all other conditions in Part 5.2.6.3.

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Identify all the discharge points from your facility that discharge
stormwater. Each discharge point must be assigned a unique 3digit number (e.g., 001, 002, 003), and should match the discharge
points identified on your NOI form.

For any discharge point for which there was no discharge during
the monitoring period, check the box in 3.c.
In 3.d, identify the type of monitoring using the specified codes, in
parentheses, below:
(IM) – Indicator monitoring
(BM) – Benchmark monitoring
(ELG) – Annual effluent limitations guidelines monitoring;
(S/T) – State- or Tribal-specific monitoring;
(I) – Impaired waters monitoring; or
(O) – Other monitoring as required by EPA.

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In 3.e, enter each “parameter” (or “pollutant”) monitored. For BM
and ELG monitoring, use the same parameter name as in Part 8 of
the permit.

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In 3.f., enter a sample measurement value for each parameter
analyzed and required to be reported. When a parameter is not
detected above the minimum level, enter the data qualifier
signifying less than the minimum level for that parameter (e.g., < 1
μg/L, if the minimum level for a parameter is 1 μg/L). Two
exceptions apply in limited situations: 1) For a parameter with a
benchmark, limitation, or water quality standard that is below the
minimum level; or 2) When the result of analysis is between the
method detection limit and the minimum level (i.e., a confirmed
detection but below the level that can be reliably quantified, also
known as “estimated value”), the permittee may report the No
Data Indicator Code for “below minimum level” (NODI B) so long
as the test method used for analysis has the lowest minimum level
of the EPA-approved analytical methods for the parameter.
Otherwise, report the data qualifier signifying less than the
minimum level.
In 3.g., enter the units for sample measurement values (i.e., “mg/L”
for milligrams per liter) for each parameter analyzed and required
to be reported. For monitoring results reported as NODI B this
space will be left blank and the units will be reported in Column 3.f.
3.h. must be completed for any monitoring results reported as NODI
B in the “Quality or Concentration” column. For NODI B, report the
laboratory method detection limit and units in this column.
In 3.i. identify the sampling date for each parameter monitoring
result reported on this form.

3.j. Exceedance solely attributable to natural background pollutant
levels per Part 5.2.6.1: Check box if following the first 4 quarters of
benchmark monitoring (or sooner if the exceedance is triggered
by less than 4 quarters of data) you have determined that the
exceedance of the benchmark is attributable solely to the
presence of that pollutant in the natural background for that

NPDES Form 6100-29

3.m. Exceedance but discharge does not result in any exceedance
of water quality standards per Part 5.2.6.5: Check box if you can
demonstrate through an analysis that an exceedance triggering
AIM requirements does not result in any exceedance of applicable
water quality standards, provided that all the conditions in Part
5.2.6.5 are met.
3.n Aluminum exceedance demonstrated to not result in an
exceedance of your facility-specific criteria per Part 5.2.6.4.a:
Check box if you can demonstrate through an analysis that an
aluminum exceedance does not result in an exceedance of your
facility-specific criteria using the national recommended water
quality criteria in-lieu of the applicable MSGP benchmark threshold.
3.o Copper exceedance demonstrated to not result in an
exceedance of your facility-specific criteria per Part 5.2.6.4.b:
Check box if you can demonstrate through an analysis that a
copper exceedance does not result in an exceedance of your
facility-specific criteria using the national recommended water
quality criteria in-lieu of the applicable MSGP benchmark threshold.

Where violations of the permit requirements are reported, include a
brief explanation in the box under 4 to describe the cause and
corrective actions taken, and reference each violation by date.
Also, this section should include any additional comments such as
are required when changing site status from inactive and
unstaffed to active or vice versa. Attach additional pages if you
need more space.
Attach additional copies of Section F as necessary to address all
discharge points and parameters.
Section G. Certification Information
DMRs must be signed by a person described below, or by a duly
authorized representative of that person.
For a corporation: By a responsible corporate officer. For the
purpose of this Section, a responsible corporate officer means:
(i) a president, secretary, treasurer, or vice-president of the
corporation in charge of a principal business function, or any other
person who performs similar policy- or decision-making functions for
the corporation, or (ii) the manager of one or more manufacturing,
production, or operating facilities, provided, the manager is
authorized to make management decisions which govern the
operation of the regulated facility including having the explicit or
implicit
duty
of
making
major
capital
investment
recommendations,
and
initiating
and
directing
other
comprehensive measures to assure long-term environmental
compliance with environmental laws and regulations; the manager
can ensure that the necessary systems are established or actions

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2026 MSGP

Appendix M – Discharge Monitoring Report (DMR) From
Instructions for Completing EPA Form 6100-29
Discharge Monitoring Report (DMR) for Stormwater Discharges
Associated with Industrial Activity Under the NPDES Multi-Sector General Permit
This Form Replaces Form 6100-29 (03/21)

Form OMB No. 2040-NEW

taken to gather complete and accurate information for
permit application requirements; and where authority to sign
documents has been assigned or delegated to the manager in
accordance with corporate procedures.
For a partnership or sole proprietorship: By a general partner or
the proprietor, respectively; or

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For a municipality, state, federal, or other public agency: By
either a principal executive officer or ranking elected
official. For purposes of this Part, a principal executive
officer of a federal agency includes (i) the chief executive
officer of the agency, or (ii) a senior executive officer having
responsibility for the overall operations of a principal
geographic unit of the agency (e.g., Regional Administrator
of EPA). Include the name and title of the person signing the
form and the date of signing.

Include the name, title, and e-mail address of the person
signing the form and the date of signing. An unsigned or
undated DMR form will be considered incomplete.

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Paperwork Reduction Act Notice

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This collection of information is approved by OMB under the
Paperwork Reduction Act, 44 U.S.C. 3501 et seq. (OMB Control
No. 2040-NEW). Responses to this collection of information
are mandatory (40 CFR 122.26). An agency may not
conduct or sponsor, and a person is not required to respond to,
a collection of information unless it displays a currently valid OMB
control number. The public reporting and recordkeeping burden
for this collection of information is estimated to be between
22 and 124 minutes per response. Send comments on the
Agency’s need for this information, the accuracy of the
provided burden estimates and any suggested methods for
minimizing respondent burden to the Regulatory Support
Division Director, U.S. Environmental Protection Agency (2821T),
1200 Pennsylvania Ave., NW, Washington, D.C. 20460.
Include the OMB control number in any correspondence. Do not
send the completed form to this address.
Submitting Your Form

If you have been granted a waiver from your Regional Office
to submit a paper NOI form, you must send your NOI by mail to
one of the following addresses:
For Regular U.S. Mail Delivery:

Stormwater Notice Processing Center
Mail Code 4203M, ATTN: 2026 MSGP Reports
U.S. EPA
1200 Pennsylvania Avenue, NW
Washington, DC 20460

For Overnight/Express Mail Delivery:

Stormwater Notice Processing Center
William Jefferson Clinton East Building – Room 7420
ATTN: 2026 MSGP Reports
U.S. EPA
1201 Constitution Avenue, NW
Washington, DC 20004
Visit this website for instructions on how to submit
electronically: https://www.epa.gov/npdes/stormwaterdischarges-industrial-activities-ereporting

NPDES Form 6100-29

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