• General Permit for Miscellaneous Discharges of Sewer Compatible (MISC) Wastewater

STATE OF CONNECTICUT
DEPARTMENT OF ENVIRONMENTAL PROTECTION
BUREAU OF WATER MANAGEMENT
PERMITTING, ENFORCEMENT AND REMEDIATION DIVISION
860-424-3018
General Permit for Miscellaneous Discharges of
Sewer Compatible (MISC) Wastewater
Issuance Date: April 30, 2001
Printed on recycled paper
Bureau of Water Management
DEP-PERD-GP-012 Rev. 04/23/01
 Fee Increase Effective August 21, 2003
Effective August 21, 2003, in accordance with Public Act 03-06,
Special Session, the fee associated with this general permit has
increased. Please note that the fee listed in the general permit itself
does not reflect this increase. The correct fees are listed in the
Registration form and Permit Application Transmittal Form.
The general permit remains in effect for a period of time and the fee
will be corrected in the general permit when it is reissued.
The appropriate fee must be submitted with the registration form. A
registration shall not be deemed complete and no activity shall be
authorized by this general permit unless the registration fee has been
paid in full.
 General Permit for Miscellaneous Discharges of
Sewer Compatible (MISC) Wastewater
Table of Contents
Section 1. Authority and Applicability.........................................................................................................1
Section 2. Definitions ...................................................................................................................................1
Section 3. Authorization under this General Permit...................................................................................3
(a) Eligible Discharges................................................................................................................3
(b) Requirements for Authorization.............................................................................................3
(c) Geographic Area..................................................................................................................4
(d) Effective Date and Expiration Date of this General Permit ......................................................4
(e) Effective Date of Authorization .............................................................................................4
(f) Revocation of an Individual Permit ........................................................................................5
(g) Issuance of an Individual Permit ............................................................................................5
(h) Requirements for Municipalities.............................................................................................5
Section 4. Registration Requirements ........................................................................................................6
(a) Who Must File a Registration................................................................................................6
(b) Exemptions from Registration Requirement............................................................................6
(c) Combined Sewer Areas........................................................................................................6
(d) Scope of Registration............................................................................................................7
(e) Contents of Registration........................................................................................................7
(f) Where to File a Registration................................................................................................11
(g) Additional Information........................................................................................................11
(h) Action by Commissioner.....................................................................................................11
Section 5. Conditions of this General Permit............................................................................................11
(a) Treatment and Control Requirements; Best Management Practices; Other Conditions ..........11
(b) Effluent Limitations..............................................................................................................14
(c) Monitoring Requirements....................................................................................................14
(d) Reporting and Record Keeping Requirements .....................................................................18
(e) Recording and Reporting Violations ....................................................................................18
(f) Regulations of Connecticut State Agencies Incorporated into this General Permit..................20
(g) Reliance on Registration......................................................................................................20
(h) Duty to Correct and Report Violations ................................................................................21
(i) Duty to Provide Information................................................................................................21
(j) Certification of Documents..................................................................................................21
(k) Date of Filing......................................................................................................................21
(l) False Statements.................................................................................................................21
(m) Correction of Inaccuracies..................................................................................................21
(n) Transfer of Authorization.....................................................................................................22
(o) Other Applicable Law ........................................................................................................22
(p) Other Rights.......................................................................................................................22
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Section 6. Commissioner’s Powers ...........................................................................................................22
(a) Minor Variance Provision...................................................................................................22
(b) Abatement of Violations......................................................................................................23
(c) General Permit Revocation, Suspension, or Modification.....................................................23
(d) Filing of an Individual Application........................................................................................23
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 General Permit for Miscellaneous Discharges of
Sewer Compatible (MISC) Wastewater
Section 1. Authority and Applicability
(a) This general permit is issued under the authority of Section 22a-430b of the General Statutes.
(b) Except as otherwise provided in this general permit, every provision of this general permit applies
to both new and existing discharges of miscellaneous sewer compatible wastewater.
Section 2. Definitions
The definitions of terms used in this general permit shall be the same as the definitions contained in
Section 22a-423 of the General Statutes and Section 22a-430-3(a) of the Regulations of Connecticut
State Agencies. In addition, the following definitions shall apply:
“Air compressor condensate” means wastewater which accumulates on the exterior of electrical or
mechanical air compressor equipment due to condensation.
“Air compressor blowdown” means condensed moisture contained in compressed air drained from the
interior of electrical or mechanical air compressor equipment.
“Applicable POTW Authority” means the POTW Authority with jurisdiction of the POTW which
receives or will receive the subject discharge.
“Approval of registration” means an approval of registration issued under Section 3 of this general
permit.
“Authorized discharge” means a discharge authorized under this general permit.
“Best Management Practices” means recommended practices or procedures designed to prevent,
minimize or control environmental impacts.
“Building maintenance wastewater” means wastewater generated by the cleaning of interior or exterior
building surfaces, other than chemical paint stripping wastewater, which meets all effluent limitations
specified in subsection 5(b) of this general permit.
“CFR” means the Code of Federal Regulations.
“Certified Hazardous Materials Manager” or “CHMM” means a person who has gained recognition as
a CHMM in accordance with the requirements developed and administered by the Institute of Hazardous
Materials Management.
“Commissioner” means the commissioner of environmental protection or his agent.
“Contact cooling and heating wastewater” means water which, for the purpose of heat transfer, comes
directly into contact with a product or manufacturing process.
“Cutting and grinding wastewater” means wastewater generated by the cutting and/or grinding of glass,
wood, plastics, or other non-metallic items.
“Department” means the department of environmental protection.
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 “Designated miscellaneous sewer compatible wastewater” means air compressor condensate, air
compressor blowdown, building maintenance wastewater, contact cooling and heating wastewater,
cutting and grinding wastewater, fire sprinkler system testwater, and non-destruct testing rinsewater
which does not contain any chemical additive containing any substance listed in Appendix B, Table II,
III, or V or Appendix D of Section 22a-430-4 of the Regulations of Connecticut State Agencies, other
than a substance for which an effluent limitation is specified in subsection 5(b) of this general permit.
“Existing discharge of miscellaneous sewer compatible wastewater” means a discharge of miscellaneous
sewer compatible wastewater initiated, created, or originated before the effective date of this general
permit.
“Fire sprinkler system testwater” means wastewater generated by the testing or maintenance of a fire
sprinkler or suppression system and which meets all effluent limitations specified in subsection 5(b) of
this general permit.
“Individual permit” means a permit issued to a named person or municipality under Section 22a-430 of
the General Statutes.
“Licensed Waste Transporter” means a commercial waste transporter licensed by the commissioner
under the authority of Section 22a-454(a) of the General Statutes.
“Miscellaneous sewer compatible wastewater” or “MISC wastewater” means (a) designated
miscellaneous sewer compatible wastewater and (b) undesignated miscellaneous sewer compatible
wastewater, which is discharged to a POTW either directly by vehicle transport or via a sanitary sewer.
Domestic sewage including septage or sewage from portable sources are excluded from this definition.
“Municipality” means municipality as defined by Section 22a-423 of the General Statutes.
“New discharge of miscellaneous sewer compatible wastewater” means a discharge of miscellaneous
sewer compatible wastewater initiated, created, or originated after the effective date of this general
permit.
“Non-destruct testing rinsewater” means wastewater generated by the removal of water-soluble
penetrant dyes or similar chemical agents used for quality control, testing, or inspection of metal and
non-metallic parts.
“Permittee” means a person or municipality who or which initiates, creates, originates, or maintains an
authorized discharge.
“Person” means a person as defined by Section 22a-423 of the General Statutes.
“POTW” means a publicly owned treatment works as that term is defined by Section 22a-430-3(a) of
the General Statutes.
“POTW Authority” means the chairperson or responsible official of the Water Pollution Control
Authority which owns or operates a POTW.
“Professional Engineer” or “P.E.” means a person who is certified as a licensed Professional Engineer
by the State of Connecticut Department of Consumer Protection.
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 “Registrant” means a person or municipality who or which files a registration.
“Registration” means a registration filed with the commissioner pursuant to Section 4 of this general
permit.
“Site” means geographically contiguous land or water from which an authorized discharge takes place
or from which a discharge for which authorization is sought under this general permit is proposed to
take place. Non-contiguous land or water owned by the same person or municipality and connected by a
right-of-way which such person or municipality controls and from which the public is excluded shall be
deemed the same site. For municipalities only, site also means all locations within its legally established
geographical boundary, jurisdiction and/or operations from which an authorized discharge takes place or
from which a discharge for which authorization is sought under this general permit is proposed to take
place.
“Undesignated miscellaneous sewer compatible wastewater” means miscellaneous sewer compatible
wastewater other than designated miscellaneous sewer compatible wastewater and which does not
contain any chemical additive containing any substance listed in Appendix B, Table II, III, or V or
Appendix D of Section 22a-430-4 of the Regulations of Connecticut State Agencies, other than a
substance for which an effluent limitation is specified in subsection 5(b) of this general permit.
“Water Pollution Control Authority” means water pollution control authority as that term is referred to
in Chapter 103 of the General Statutes.
Section 3. Authorization under this General Permit
(a) Eligible Discharges
A new or existing discharge of MISC wastewater is authorized by this general permit provided the
requirements of subsection (b) of this section are satisfied. Any other discharge of water,
substance, or material into the waters of the state is not authorized by this general permit, and no
person or municipality may initiate, create, originate, or maintain such a discharge without first
obtaining authorization therefor under Section 22a-430 of the General Statutes or another general
permit issued under Section 22a-430b of the General Statutes.
(b) Requirements for Authorization
This general permit authorizes the discharge of MISC wastewater pursuant to subsection (a) of this
section provided:
(1) Registration
(A) Except as provided in subsections 3(h), 4(b) and 4(c) of this general permit, with
respect to a new or existing discharge of MISC wastewater with a maximum daily flow
of no more than 5,000 gallons per day, a completed registration has been filed with the
commissioner in accordance with the requirements of subsection 3(e) of this general
permit,
(B) Except as provided in paragraph (C) of this subsection of the general permit, with
respect to a new or existing discharge of MISC wastewater with a maximum daily flow
greater than 5,000 gallons per day, a completed registration has been filed with the
commissioner and the commissioner has issued an approval of registration in accordance
with the requirements of subsection 3(e) of this general permit.
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 (C) With respect to a new or existing discharge of fire sprinkler testwater with a maximum
daily flow greater than 5,000 gallons per day, a completed registration has been filed
with the commissioner in accordance with the requirements of subsection 3(e) of this
general permit.
(D) For a discharge of MISC wastewater which is conveyed to a POTW by means of a
properly licensed transporter in accordance with the requirements of subsection 5(a)(3)
of this general permit, a completed registration has been filed with the commissioner.
(2) Coastal Area Management
Such discharge is consistent with all applicable goals and policies in Section 22a-92 of the
General Statutes and will not cause adverse impacts to coastal resources as that term is
defined in Section 22a-93 of the General Statutes.
(3) Endangered and Threatened Species
Such discharge does not threaten the continued existence of any species listed pursuant to
Section 26-306 of the General Statutes as endangered or threatened and will not result in the
destruction or adverse modification of habitat essential to such species.
(4) Such discharge is not eligible for authorization under any general permit issued under Section
22a-430b of the General Statutes.
(5) Such discharge is released to a POTW either directly by a properly licensed transporter or via
a sanitary sewer.
(6) The registrant has submitted to the applicable POTW Authority a copy of the completed
registration and has so certified in writing to the commissioner.
(7) Except for municipalities, the maximum daily flow of any one category of MISC wastewater,
or the total of any combination of MISC wastewater categories, does not exceed 50,000
gallons per day, or two percent of the design flow of such POTW at each site, whichever is
less.
(8) Such discharge is not subject to any provision of 40 CFR Part 403.6 National Pretreatment
Standards: Categorical Standards for which a regulation containing pollutant discharge limits
has been promulgated.
(c) Geographic Area
This general permit applies throughout the state of Connecticut.
(d) Effective Date and Expiration Date of this General Permit
This general permit is effective on the date it is issued by the commissioner and expires ten years
from such date.
(e) Effective Date of Authorization
(1) A discharge of MISC wastewater exempt from the requirement to file a registration as
specified in subsection 4(b) of this general permit is authorized on the effective date of this
general permit.
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 (2) A new or existing discharge of MISC wastewater not exempt from the requirement to file a
registration is authorized on the effective date of this general permit, except that if the
commissioner does not receive a completed registration with respect to such discharge within
one year of the effective date of this general permit, or, if applicable, the commissioner does
not issue an approval of registration with respect to such discharge within one year of the
effective date of this general permit, such discharge shall cease to be authorized.
(3) Except as provided in subsection 3(e)(2) above and beginning one year after the effective date
of this general permit, a new or existing discharge of MISC wastewater not exempt from the
requirement to file a registration is not authorized until the date the commissioner receives a
completed registration or, if applicable, issues an approval of registration with respect to such
discharge.
(4) A discharge of MISC wastewater conveyed to a POTW by means of a properly licensed
transporter is authorized under this general permit on the day the commissioner receives a
completed registration, or if applicable, on the day the commissioner issues an approval of
registration with respect to such discharge.
Nothing in this subsection relieves any person initiating, originating, or creating such new discharge
or maintaining such an existing discharge from the obligation to assure compliance with all the
requirements of this general permit.
(f) Revocation of an Individual Permit
If a discharge which is eligible for authorization under this general permit is presently authorized by
an individual permit, such individual permit may be revoked by the commissioner upon a written
request by the permittee. If the commissioner revokes such individual permit in writing, such
revocation shall take effect on the effective date of authorization of such discharge under this
general permit.
(g) Issuance of an Individual Permit
If the commissioner issues an individual permit authorizing a discharge which has already been
authorized by this general permit, this general permit shall cease to authorize such discharge
beginning on the date such individual permit is issued.
(h) Requirements for Municipalities
(1) A municipality is authorized to discharge any category of designated miscellaneous sewer
compatible wastewater as defined under Section 2 of this general permit without filing a
registration for such discharge provided that
(A) each such discharge complies with the effluent limitations specified in subsection 5(b) of
this general permit; and
(B) if needed, all wastewater treatment facilities and/or best management practices are
maintained properly at all times as required to comply with such effluent limitations.
(2) A municipality is authorized to discharge undesignated miscellaneous sewer compatible
wastewater as defined in Section 2 of this general permit provided that
(A) a registration is filed which describes each such discharge greater than 500 gallons per
day as specified in subsection 4(e)(2)(N) of this general permit;
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 (B) each such discharge complies with the effluent limitations specified in subsection 5(b) of
this general permit; and
(C) if needed, all wastewater treatment facilities and/or best management practices are
maintained properly at all times as required to comply with such effluent limitations.
Section 4. Registration Requirements
(a) Who Must File a Registration
Except as provided in subsections (b) and (c) of this section and subsection 3(h), any person or
municipality who or which wishes under the authority of this general permit to initiate, create, or
originate a new discharge of MISC wastewater or to maintain an existing discharge of MISC
wastewater shall file with the commissioner (1) a registration which meets the requirements of
Section 4 of this general permit and (2) the fee specified by subsection (e) of this section.
(b) Exemptions from Registration Requirement
If conveyed to a POTW by means of a municipal sanitary sewerage system, a new or existing
discharge of
(1) no more than 500 gallons per day of air compressor condensate, air compressor blowdown,
contact cooling and heating wastewater, cutting and grinding wastewater, non-destruct
testing rinsewater, or undesignated MISC wastewater; and
(2) no more than 5,000 gallons per day of building maintenance wastewater or fire sprinkler
system testwater
is authorized under this general permit without the filing of a registration, provided such discharge
is consistent with the provisions of subsections 3(b)(2), (3), (4), (5), and (8) of this general
permit. Any person initiating, originating, or creating such a new discharge or maintaining such an
existing discharge shall assure compliance with all the requirements of this general permit other
than the requirement to register the discharge with the commissioner.
(c) Combined Sewer Areas
(1) In geographic areas served by combined storm and sanitary sewers, all discharges conveyed
to a POTW generated by the testing and maintenance of potable water distribution systems
and/or used for fire suppression, fire hydrant testing, or related activities necessary for
insuring public health and safety shall be authorized but exempt from all registration
requirements of this section and from the effluent limitations and monitoring and reporting
requirements specified in subsections 5(a), 5(b), 5(c), 5(d), 5(e) and 5(h) of this general
permit.
(2) In geographic areas served by combined storm and sanitary sewers, all sources of
groundwater and stormwater which enter private or public utility equipment manholes and/or
vaults may be discharged to a POTW provided that proper and effective best management
practices are maintained to ensure compliance with the effluent limitations specified in
subsection 5(b) of this general permit. Such discharges shall be exempt from all registration
requirements of this section, from the flow and pollutant monitoring requirements specified in
subsection 5(c), and subject to the reporting requirements specified in subsection 5(e)(2) of
this general permit.
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 (d) Scope of Registration
A registrant shall register on one registration form every discharge from a single site for which
discharge the registrant seeks authorization under this general permit. Any person or municipality
which generates MISC wastewater from multiple sites may submit a single registration form to
cover all sites and associated discharges.
(e) Contents of Registration
(1) Fees
(A) The following fee(s) shall be submitted with a registration form:
(i) For registered discharge(s) having a maximum daily flow no greater than 5,000
gallons per day: $250.00 for a person;
(ii) For registered discharge(s) having a maximum daily flow greater than 5,000 gallons
per day: $500.00 for a person;
(iii) For registered discharge(s) of fire sprinkler system testwater: $250.00 for a person;
and
(iv) For each registration filed by a municipality in accordance with the requirements
specified in subsection 3(h)(2) of this general permit, for total maximum daily flow
no greater than 5,000 gallons per day: $125.00; for total maximum daily flow
greater than 5,000 gallons per day: $250.00.
(B) A registration shall not be deemed complete and no discharge shall be authorized by this
general permit unless the fee specified in subparagraph (A) of this subdivision has been
paid in full.
(C) The registration fee shall be paid by check or money order payable to the Department of
Environmental Protection.
(D) The registration fee is non-refundable.
(2) Registration Form
Except as specified for municipalities in part (N) of this subsection, a registration shall be filed
on forms prescribed and provided by the commissioner and shall include the following:
(A) Legal name, address, and telephone number of the registrant. If the registrant is a
corporation or a limited partnership, provide the exact name as registered with the
Connecticut Secretary of the State;
(B) Legal name, address, and telephone number of the owner of the site from which the
subject discharge takes, or is to take, place;
(C) Legal name, address, and telephone number of the registrant's attorney or other
representative, if applicable;
(D) Legal name, address, and telephone number of any consultant, certified hazardous
materials manager, or engineer retained by the registrant to prepare the registration;
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 (E) Address of the site of the subject discharge and the name of the receiving POTW;
(F) If the subject discharge is an existing discharge, the date it began and the date it is
expected to end; if the subject discharge is a new discharge, the date the registrant plans
to begin it and the date it is expected to end;
(G) A detailed description of the subject discharge, including identification of the type of
MISC wastewater discharge; the maximum daily flow rate and the method of flow
measurement; the process or activity generating the discharge, including the raw
materials used in that process or activity; and a list of the substances used or added to
the wastewater, including but not limited to those substances for which effluent
limitations are specified in subsection 5(b) and those substances listed in Appendix B
Table II, III and V or Appendix D of Section 22a-430-4 of the Regulations of
Connecticut State Agencies. Any such substances shall be identified by their generic
chemical names;
(H) A description of the best management practices, such as conservation and reuse of
water, minimization, substitution and reuse of chemicals, and other pollution prevention
measures, implemented or to be implemented by the registrant to minimize any adverse
environmental effects of the subject discharge;
(I) A description of any wastewater treatment processes, such as neutralization, oil/water
separation, and precipitation of solids or metals, which the registrant utilizes or will
utilize to achieve compliance with any of the effluent limitations specified in subsection
5(b) of this general permit;
(J) For any person seeking authorization to discharge MISC wastewater under this general
permit without direct access to a sanitary sewer, a statement that such wastewater will
be conveyed to the receiving POTW by means of a properly licensed transporter;
(K) For any discharge of MISC wastewater not exempt from registration, written
certification from the registrant that a copy of the completed registration has been
submitted to the applicable POTW Authority;
(L) For any MISC wastewater discharge, other than a discharge of fire sprinkler system
testwater, with a maximum daily flow greater than 5,000 gallons per day, either:
(i) Submission of a certification that each such discharge has been approved by the
applicable POTW Authority, provided such certification is submitted by the
registrant on a form prescribed by the commissioner and such certification is
deemed acceptable to the commissioner, or
(ii) Submission of the following by a certified hazardous materials manager or
professional engineer licensed to practice in Connecticut:
1) An assessment of the impact of the existing or likely impact of the subject
discharge on the hydraulic capacity of the receiving POTW, its sewerage
system, pumping stations, and force mains;
2) The rate, frequency, and times during which the subject discharge is or will
be released to the POTW;
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 3) Methods used or to be used to control the rate at which the subject discharge
is released to the receiving POTW, including, but not limited to equalization of
flows, limiting of hydraulic loading, or limiting of total organic or suspended
solids loading;
4) An evaluation of the existing or likely impact of the subject discharge on the
receiving POTW’s treatment processes and operations, including sludge
generation and disposal;
5) Any other information that may assist in determining whether the subject
discharge may adversely affect the performance of the receiving POTW,