NPDES Permit CT0003921.pdf

Connecticut Department of

ENERGY &

ENVIRONMENTAL

PROTECTION

NPDES PERMIT

issued to

US Naval Submarine Base New London Enviromnental Division Box 400 439 Tautog Avenue, Room 104 Groton, CT 06349-5400

Location Address:

Corner of Route 12 and Crystal Lake Road Groton, CT 06349-5400

Facility ID: 059-036 Permit ID: CT0003921

Receiving Stream:

Thames River

Stream Segment I.D. No

CT-EI_015-SB

Permit Expires: February 26, 2017

SECTION h GENERAL PROVISIONS

This permit is reissued in accordance with section 22a-430 of Chapter 446k, Connecticut General Statutes ("CGS"), and Regulations of Connecticut State Agencies ("RCSA") adopted thereunder, as amended, and section 402(b) of the Clean Water Act, as amended, 33 USC 1251, et. ~, and pursuant to an approval dated September 26, 1973, by the Administrator of the United States Environmental Protection Agency for the State of Connecticut to administer an N.P.D.E.S. permit program.

(B) US Naval Submarine Base New London ("Pennittee"), shall comply with all conditions of this permit including the following sections of the RCSA which have been adopted pursuant to section 22a-430 of the CGS and are hereby incorporated into this permit. Your attention is especially drawn to the notification requirements of subsection 0)(2), (i)(3), (j)(1), (j)(6), 0)(8), (j)(9)(C), (j)(10)(C), (j)(11)(C), (D), (E), mid (F), (k)(3) and (4) and (1)(2) of sectinn 22a-430-3.

Section 22a-430-3 General Conditions

(a) Definitions

(b) General

(c) Inspection and Entry

(d) Effect of a Permit

(e) Duty to Comply

(f) Proper Operation and Maintenance

(g) Sludge Disposal

(h) Duty to Mitigate

(i) Facility Modifications; Notification

(j) Monitoring, Records and Reporting Requirements

(k) Bypass

(l) Conditions Applicable to POTWs

(m) Effluent Limitation Violations (Upsets)

(n) Enforcemant

(o) Resource Conservation

(p) Spill Prevention and Control

79 Elm Street ¯ Hartford, CT 06106-5127 www.ct.gov/deep

Affirmative Actlon/Equal Opportunity Employer

(c)

(D)

(E)

(F)

(o)

(H)

(q) Instrumentation, Alarums, Flow Recorders

(r) Equalization

Section 22a-430-4 Procedures and Criteria

(a) Duty to Apply

(b) Duty to Reapply

(c) Application Requirements

(d) Preliminary Review

(e) Tentative Determination (t’) Draft Permits, Fact Sheets

(g) Public Notice, Notice of Hearing

(h) Public Comrnents

(i) Final Determination

(j) Public Hearings

(k) Submission of Plans and Specifications. Approval.

(1) Establishing Effluent Li~Ntations and Conditions

(m) Case by Case Determinations

(n) Permit issuance or renewal

(o) Permit Transfer

(p) Pernait revocation, denial or modification

(q) Variances

(r) Secondary Treatment Requirements

(s) Treatment Requirements for Metals and Cyanide

(t) Discharges to POTWs - Prohibitions

Violations of any of the terms, conditions, or limitations contained in this pe~rnit may subject the Pennittee to enforcement action including, but not limited to, seeking penalties, inj~mctions and!or forfeitures pursuant to applicable sections of the CGS and RCSA.

Any false statement in any information submitted pursuant to this permit may be punishable as a criminal offense under section 22a-438 or 22a-131a of the CGS or in accordance with section 22a-6, under section 53a-157b of the CGS.

The authorization to discharge under this permit may not be transferred without prior written approval of the Conmaissioner of Energy and Environmental Protection ("Commissioner"). To request such approval, the Permittee and proposed transferee shall register such proposed transfer with the Commissioner, at least 30 days prior to the transferee becoming legally responsible for creating or maintaining any discharge which is the subject of the permit transfer. Failure, by the transferee, to obtain the Commissioner’s approval prior to commencing such discharge(s) may subject the transferee to enfomement action for discharging without a permit pursuant to applicable sections of the CGS and RCSA.

No provision of this permit and uo action or inaction by the Commissioner shall be construed to constitute an assurance by the Commissioner that the actions taken by the Permittee pursuant to this permit will result in compliance or prevent or abate pollution.

Nothing in this pem~it shall relieve the Permittee of other obligations under appiicable federal, state and local law.

An aunual fee shall be paid for each year this permit is in effect as set fortb in section 22a-430-7 of the Regulations of Co~mecticut State Agencies.

This permitted discharges are consistent with the applicable goals and policies of the Commcticut Coastal Management Act (section 22a-92 of the Connecticut General Statutes).

PERMIT # CT0003921 Page 2

SECTION 2: DEFINITIONS

(A) The definitions of the terms used in this permit shall be the same as the definitions contained in section 22a-423 of the CGS and section 22a-430-3(a) and 22a-430-6 of the RCSA, except for "No Observable Acute Effect Level (NOAEL)" which is redefined below.

(B) In addition to the above, the following definitions shall apply to this permit:

"-----" in the limits column on the monitoring table means a limit is not specified but a value must be reported on the DMR, "Annual" in the context of any sampling frequency found in Section 5, shall mean the sample must be collected iu the month of December or the first month following the month of December ifa discharge did not occur in December, unless otherwise noted in this permit.

"Average Monthly Limit"; means the maximum allowable "Average Monthly Concentration" as defined in section 22a-430-3(a) of the RCSA when expressed as a conce~m-ation (e.g. mg/!); otherwise, it means "Average Monthly Discharge Limitation" as defined in section 22a-430-3(a) of the RCSA.

"Critical Test Concentration (CTC)" means the specified effluent dilution at which the Permittee is to conduct a single-concentration Aquatic Toxicity test.

"Daily Composite" means (1) a composite sample taken over a full operating day consisting of grab samples collected at equal intervals of no mm’e than sixty (60) minutes and combined proportionally to flow, or (2) a composite sample continnously collected over a full operating day proportionally to flow. Upon submission of docmnentation by the applicant satisfactory to the commissioner that a discharge is of consistent effluent quality, the commissioner may allow equa! sampling inte~vals of up to four (4) honrs for a daily composite sample.

"Daily Concentration" means the concentration of a substance as measured in a daily composite sample, or, the arithmetic average of all grab sample results defining a grab sample average.

"Daily Quantity" means the quantity of waste discharged during an operating day.

"Entrainment" means the incorporation of aquatic organisms, including all life stages offish and shellfish, with intake water flow entering and passing through a cooling water intake structure and into a cooling water system.

"Grab Sample Average" means the arithmetic average of all grab sample analyses. Grab samples shall be collected at least once every four hours over a full operating day for as long as a discharge exists on that day (minimum of two grab samples per day).

"Impingemem" means the entrapment of aquatic organisms, including all life stages offish and shellfish, on the intake stmctm’e or against a screening device during periods of intake water withdrawal.

"Instantaneous Limit" means the highest allowable concentration of a substance as measured by a grab sample, or the highest allowable measurement of a parameter as obtained through instantaneous monitoring.

"In stream Waste Concentration (IWC)" means the concentration of a discharge in the receiving water after mixing has occurred in the allocated zone of influence.

"Maximmn Daily Limit", means the maximum allowable "Daily Concentration" (defined above) when expressed as a concentration (e.g. nag/l); otherwise, it means the maximum allowable "Daily Quantity"

PERMIT # CT0003921 Page 3 as defined above, unless it is expressed as a flow quantity. If expressed as a flow quantity it means "Maximum Daily Flow" as defined in section 22a-430-3(a) of the RCSA. For the Toxicity parameter, this value is the minimum value, in percent, that represents a passed test.

"rag/l" means milligranas per liter.

"Monitoring Conditional" (MC) means conditional limit not applicable during a monitoring period.

"NA" as a Monitoring Table abbreviation means "not applicable".

"NR" as a Monitoring Table abbreviation means "not required".

"No Observable Acute Effect Level (NOAEL)" means any concentration equal to the critical test concentr’ation in a single concentration (pass/fail) toxicity test conducted pursuant to section 22a - 430- 3(j)(7)(A)(i) RCSA demonstrating 90% or greater survival of test organisms at the CTC and if the specified CTC is less than 100% effluent then the discharge will also exhibit greater than 50% iurvival of test organisms in 100% (undiluted) effluent.

"Quarterly", in the context of a sampling frequency, means sampling is required in the months of March, June, September, and December. In the event that the discharge does not occur in any of these sampling months, the Pennittee shall sample during the next discharge event.

"Range During Sampling" ("RDS"), as a sample type, meaus the maximum and minimum of all values recorded as a result of analyzing each grab sample of; 1 ) a Composite Sample, or, 2) a Grab Sample Average. For tbose Permittees with continuous monitoring and recording pH meters, Range During Smnpling means the maximmn and minimum readings recorded with the continuous monitoring device during the Composite or Grab Sample Average sample collection.

"Semi-Annually" means that a representative sample of the discharge shall be collected at any time during each of the following periods: January-June and July-December. Analytical results shall be reported in tbe July and January DMRs.

"ug/l" means micrograms per liter.

SECTION 3: COMMISSIONER’S DECISION

(A) The Commissioner, has issued a final detemlination mad found that continuance of the existing discharges will not cause pollution of the waters of the state. The Conmfissioner’s decision is based on Application No. 201101967 for permit reissuance received on March 22, 2011 and the administrative record established in the processing of that application.

(B) (1) From the issuance of this permit through and including February 29, 2012, the Commissioner hereby authorizes the Pemfittee to discharge in accordance with the terms and conditions of Permit No.

CT0003921, issued by the Commissioner to the Permittee on September 27, 2006, the previous application submitted by the Permittee on January 6, 2000, and all modifications and approvals issued by the Cormnissioner or the Cormnissioner’s authorized agent for the discharge and/or activities authorized by, or associated with, Permit No. CT0003921, issued by the Commissioner to the Permittee on September 27, 2006.

(2) From March 1, 20t2 until this permit expires or is modified or revoked, the Commissioner hereby authorizes the Permittee to discharge in accordance with the terms and conditions of Permit No.

CT0003921, issued by the Commissioner to the Permittee on February 27, 2012, Application No.

201101967 received by the Department on March 22, 2011, and all modifications and approvals issued by the Comanissioner or the Commissioner’s authorized agent for the discharge and/or activities authorized by, or associated with, Permit No. CT000392 I, issued by the Commissioner to the Permittee on February 27, PERMIT # CT0003921 Page 4

2012.

(c) The Cormnissioner reserves the right to make appropriate revisions to the permit in order to establish any appropriate effinent limitations, schedules of compliance, or other provisions which may be authorized under the Federal Clean Water Act or the CGS or regulations adopted thereunder, as amended. The permit as modified or renewed under this paragraph may also contain any other requirements of the Federal Clean Water Act or CGS or regulations adopted thereunder which are then applicable.

(D) This permit also includes determinations regarding section 316(a) of the federal Water Pollution ContTol Act 33 U.S.C. § 1326(a), and compliance with this permit is sufficient to assure the protection and propagation of a balanced indigenous population of shellfish, fish and wildlife in and on the receiving waters. The Commissioner has determined that the thermal component of Discharge Serial No. 001-1,002-1, and 006- i will not result in a violation of the Connecticut Water Quality Standards adopted pursuant to section 22a- 426 of the Connecticut General Statutes as amended and approved by the U.S. Environmental Protection Agency on February 24, 2011. This determination is based on the report entitled "Impact of the NSB New London Thermal Discharge on the Thames River", dated March 1997, as approved by the Commissianer on May 15,2001. This permit also contains a determination under section 316(b) of the federal Water Pollution Control Act, 33 U.S.C. § 1326(b) and Conn. Gen. Stat. § 22a-430(a). This 316(b) determination is in Section 9(C) of this permit.

SECTION 4: GENERAL EFFLUENT LIMITATIONS

(A) No discharge shall contain, or cause in the receiving stream, a visible oil sheen or floating solids; or, cause visible discoloration or foaming in the receiving stream beyond the vicinity of the base as demarcated by the piers and the nnrth-south property lines of the base.

(B) No discharge shall cause acute or chronic toxicity in the receiving water body beyond any zone of influence specifically allocated to that discharge in this permit.

(c) The temperature of any discharge shall not increase the temperature of the receiving stremn above 83°F, or, in any case, raise the temperature of the receiving stream by more than 4°F beyond the zone of influence identified in the report entitled "Impact of the NSB New London Thermal Discharge on the Thames River", dated March 1997, as approved by the Commissioner on May 15,2001. The incremental temperatttre increase in coastal and marine waters is limited to 1.5 °F during the period including July, August, and September.

SECTION 5: SPECIFIC EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

(A) .... The discharges shall not exceed and shall otherwise conform to the specific terms and conditions listed below.

The discharges are restricted by, and shall be monitored in accordance with, the tables below:

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(1) All samples shall be comprised of only the wastewater described in these tables. Samples shall be collected prior to combination with receiving waters or wastewater of any other type, and after all approved treatment traits, if applicable. All samples collected shall be representative of the discharge during standard operating conditions.

(2) In cases where limits and sample type are specified but sampling is not required by this permit, the limits specified shall apply to all samples which may be collected and analyzed by the Department of Energy and Environmental Protection persolmel, the Permittee, or other parties.

SECTION 6: SAMPLE COLLECTION, HANDLING AND ANALYTICAL TECHNIQUES

(A) Chemical Analysis

(1) Chemical analyses to determine compliance with effluent limits and conditions established in this permit shall be performed using the methods approved by the Enviro~maental Protection Agency pursuant to 40 CFR 136 anless an alternative method has been approved in writing in accordance with 40 CFR 136;4 or as provided in section 22a-430-3(j)(7) of the RCSA. Chemicals which do not have methods of analysis defined in 40 CFR 136 shall be analyzed in accordance with methods specified in this permit.

(2) All metals analyses identified in this permit shall refer to analyses for Total Recoverable Metal as defined in 40 CFR 136 unless otherwise specified.

(3) The Minimum Levels specified below represent the concent~’ations at which quantification must be achieved and verified during the chemical analyses for the parameters identified in Section 5 Tables A, B, and E thru N. Analyses for these parameters must include check standards within ten percent of the specified Minimum Level or calibration points equal to or less than the specified Minimum Level.

(4)

(5)

(6)

Parameter Minimum Level

Chlorine, total residual 20.0 ug/L Copper 5.0 ug/L Lead 5.0 ug/L Nickel 5.0 ug/L Silver 2.0 ug/L Zinc 20.0 ug/L

The value of each parameter for which monitoring is required under this permit shall be reported to the maximum level of accuracy and precision possible consistent with the requirements of this section of the permit.

Effluent analyses for which quantification was verified during the analysis at or below the minimum levels specified in this section and which indicate that a parameter was not detected shall be reported as "less than x" where ’x’ is the numerical value equivalent to the analytical method detection limit for that analysis.

Results of effluent analyses which indicate that a parameter was not present at a concentration greater than or equal to the Minimum Level specified for that analysis shall be considered equivalent to zero (0.0) for purposes of determining compliance with effluent limitations or conditions specified in this

PERMIT # CT0003921 Page 23 permit.

(B) Acute Aquatic Toxicity Test

(1) Samples for monitoring of Aquatic Toxicity shall be collected and handled as prescribed in "Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms" (EPA/821-R-02-012).

(a) Composite samples shall be chilled as they are collected. Grab samples shall be chilled immediately following collection. Samples shall be held at 4 degrees Centigrade until Aquatic Toxicity testing is initiated.

(b) Effluent samples shall not be dechlorinated, filtered, or, modified in any way, prior to testing for Aquatic Toxicity unless specifically approved in writing by the Commissioner for monitoring at this facility.

Chemical analyses of the parameters identified in Section 5 Tables A, B, and E thru N shall be conducted on an aliquot of the same sample tested for Aquatic Toxicity.

(i) At a minimttm, pH, specific conductance, salinity, total alkalinity, total hardness, and total residual chlorine shall be measured in the effluent sample and, during Aquatic Toxicity tests, in the highest concentration of test solution and in the dilution (control) water at the beginning of the test and at test termination. If Total Residual Chlorine is not detected at test initiation, it does not need to be measured at test termination. Dissolved oxygen, pH, and temperature shall be measured in the control and all test concentrations at the beginning of the test, daily thereafter, and at test termination. Salinity shall be measured in each test concentration at the beginning of the test and at test termination.

(i~) For tests with saltwater organisms that require salinity adjustment of the effluent, chemical analyses shall be conducted on an aliquot of the effluent sample collected for Aquatic Toxicity testing and on an aliquot of the effluent following salinity adjustment. Both sets of results shall be reported on the Aquatic Toxicity Monitoring Report (ATMR).

(d) Tests for Aquatic Toxicity shall be initiated within 36 hours of sample collection.

Monitoring for Aquatic Toxicity to determine compliance with the pennlt limit on Aquatic Toxicity (invertebrate) above shall be conducted for 48-hours utilizing neonatal Mysidopsis bahia ( 1-5 days old with no more than 24-hours range in age)

(3) Monitoring for Aquatic Toxicity to determine compliance with the permit limit on Aquatic Toxicity (vertebrate) above shall be conducted for 96-hours utilizing larval Menidia be~ (9-14 days old with no more than 24-hours range in age).

(4) Tests for Aquatic Toxicity shall be conducted as prescribed for static non-renewal acute tests in "Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms" (EPA/821-R-02-012), except as specified below.

(a) Definitive (multi-concentratinn) testing, with LC50 as the endpoint, shall be conducted to

PERMIT # CT0003921 Page 24

(b)

(d) determine compliance with limits on Aquatic Toxicity and monitoring conditions and shall incorporate, at a minimum, the following effluent concentrations:

(i) For Aquatic Toxicity Limits expressed as LC50 values of 33% or greater: 100%, 75%, 50%, 25%, 12.5%, and 6.25%

(ii) For Aquatic Toxicity Limits expressed as LC50 values between 15% and 33% and for monitoring only conditions: 100%, 50%, 25%, 12.5%, and 6.25%

(iii) For Aquatic Toxicity Limits expressed as LC50 values of 15% or less: 100%, 50%, 25%, 12.5%, 6.25%, and 3%

For Aquatic Toxicity Limits and for monitoring only conditions, expressed as an NOAEL value, Pass/Fail (single-concentration) tests shall be conducted at a specified Critical Test Concentration (CTC) equal to the Aquatic Toxicity Limit, or 100% in the case ofmonituring only conditions, as prescribed in section 22a-430-30)(7)(A)(i) of the Regulations of Connecticut State Agencies, except that five replicates of undiluted effluent and five replicates of effluent diluted to the CTC shall be included.

Mysids shall be fed during the tests.

Aquatic toxicity tests with saltwater organisms shall be conducted at the same final salinity, plus or minus 2 parts per thousand, as the effluent.

(i) Sodium lauryl sulfate or sodium dodecyl sulfate shall be used as the reference toxicant.

(ii) Synthetic seawater for use as dilution water or controls shall be prepared with deionized water and artificial sea salts as described in EPA/821-R-02-012.

(iii) If the salinity of the source water is more than 5 parts per thousand higher, or lower than the culture water used for rearing the organisms, a second set of controls matching the salinity of the culture water shall be added to the test series. Test validity shall be determined using the controls adjusted to match the source water salinity.

(iv) Salinity adjustment that may be required in tests with saltwater organisms shall utilize artificial sea salts necessary to achieve the required salinity.

(v) The actual effluent concentrations in definitive tests with saltwater organisms shall be used in calculating test results.

(vi) For Tables F, M, and N salinity adjustment that may be required in tests with saltwater organisms shall utilize the minhnum amount of synthetic sea salt necessary to achieve the required salinity (26-30 ppt).

(vii) For tests with saltwater organisms that require salinity adjustment of the effluent, chemical analyses for Tables F, M, and N shall be conducted on an aliquot of the effluent sample collected for Aquatic Toxicity testing and on an aliquot of the effinent following salinity adjustment. Both sets of results shall be reported on the

PERMIT # CT0003921 Page 25

Aquatic Toxicity Monitoring Report (ATMR).

For DSN011-1, DSN012, DSN014, and DSN015:

(5) Monitoring for Aquatic Toxicity to determine compliance with the permit limit on Aquatic Toxicity (invertebrate) above shall be conducted for 48 hours utilizing neonatal Daphnia pulex (less than 24 hours old)

(6) Monitoring for Aquatic Toxicity to determine compliance with the permit limit on Aquatic Toxicity (vertebrate) above shall be conducted for 48 hours utilizing larval Pimephales promelas (1-14 days old with no more than 24 hours range in age).

(7) Tests for Aquatic Toxicity shall be conducted as prescribed for static non-renewal acute tests in "Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms" (EPA/821-R-02-012), except as specified below.

(a) Definitive (multi concentration) testing, with LC50 as the endpoint, shall be conducted to detemfine compliance with limits on Aquatic Toxicity and monitoring conditions and shall incorporate, at a minimmn, the following effluent concentrations:

(i) For Aquatic Toxicity Limits expressed as LC50 values of 33% or greater: I00%, 75%, 50%, 25%, 12.5%, and 6.25%

(b) Organisms shall not be fed during the tests.

(c) Copper nitrate shall be used as the reference toxicant in tests with freshwater organisms.

(d) Synthetic fi’eshwater prepared with deionized water adjusted to a hardness of 50 mg/L (plus or minus 5 rag/L) as CaCO3 shall be used as dilution water in tests with fi’eshwater organisms.

(8) Compliance with limits on Aquatic Toxicity shall be determined as follows:

(a) For limits expressed as a minimum LC30 value, compliance shall be demonstrated when the results of a valid definitive Aquatic Toxicity test indicates that the LCs0 value for the test is greater than the Aquatic Toxicity Limit.

(b) For limits expressed as an NOAEL value, compliance shall be demonstrated when the results of a valid pass/fail Aquatic Toxicity test indicates there is greater than 50% survival in the undiluted effluent and 90% or greater survival in the effluent at the specified CTC.

SECTION 7: REPORTING REQUIREMENTS

(A) The results of chemical analyses and any aquatic toxicity test required above shall be entered on the Discharge Monitoring Report (DMR), provided by this office, and reported to the Bureau of Materials Management and Compliance Assurance (Attn: DMR Processing) at the following address. Except for continuous monitoring, any monitoring required more fi’equently than monthly shall be reported on an attachment to the DMR, and any additional monitoring conducted in accordance with 40 CFR 136 or other methods approved by the Commissioner shall also be included on the DMR, or as an attachment, if necessary. The report shall also include a detailed explanation of any violations of the limitations specified. The DMR shall be received at this address by the last day of the month following the month in which samples are collected.

PERMIT # CT0003921 Page 26

(B)

Bureau of Matarials Management and Compliance Assurance Water Permitting and Enforcement Division (Attn: DMR Processing) Connecticut Department of Energy and Environmental Protection 79 Elm Street Hartford, CT 06106-5127

Complete and accurate aquatic toxicity test data, including percent survival of test organisms in each replicate test chamber, LC50 values and 95% confidence intervals for definitive test protocols, and all supporting chemical/physical measurements performed in association with any aquatic toxicity test, including measured daily flow and hours of operation for the discharge day and for the 30 consecutive operating days prior to sample collection if compliance with a limit on Aquatic Toxicity is based on toxicity limits based on actual flows described in Section 7, shall be entered on the Aquatic Toxicity Monitoring Report form (ATMR) and sent to the Bureau of Water Protection and Land Reuse at the following address. The ATMR shall be received at this address by the last day of the month following the month in which samples are collected.

Bureau of Water Protection and Land Reuse (Attn: Aquatic Toxicity) Connecticut Department of Energy and Environmental Protection 79 Elm St.

Hartford, CT 06106-5127

If this permit requires monitoring of a discharge on a calendar basis (e.g. Monthly, quarterly, etc.), but a discharge has not occurred within the fi’equancy of sampling specified in the permit, the Permittee must submit the DMR and ATMR, as scheduled, indicating "NO DISCHARGE". For those Permittees whose required monitoring is discharge dependent (e.g. per batch), the minimum reporting frequency is monthly. Therefore, if there is no discharge during a calendar month for a batch discharge, a DMR must be submitted indicating such by the end of the following month.

(D) NetDMR Reporting Requirements

(1) Prior to one-hundred and eighty (180) days after the issuance of this permit, the Pennittee may either submit monitoring data and other reports to the Department in hard copy form or electronically using NetDMR, a web-based tool that allows Permittees to electronically submit discharge monitoring reports (DMRs) and other required reports through a secure interact co~mection. Unless otherwise approved in writing by the Commissioner, no later than one-hundred and eighty (180) days after the issuance of this permit the Permittee shall begin reporting electronically using NetDMR. Specific requirements regarding subscriptinn to NetDMR and submittal of data and reports in hard copy form and for submittal using NetDMR are desaribed below:

(a) NetDMR Subscriber Agreement

On or before fifteen (15) days after the issuance of this permit, the Permittee and/or the person authorized to sign the Permittee’s discharge monitoring reports ("Signatory Authority") as described in RCSA Section 22a-430-3(b)(2) shall contact the Department and initiate the NetDMR subscription process for electronic submission of Discharge Monitoring Report (DMR) information. A copy of the NetDMR subscriber form is available on the Department’s website. On or before ninety (90) days after issuance of this permit the Permittee shall submit a signed and notarized copy of the ConneeticutDEEP NetDMR Subscriber Agreement to the Department.

(b) Submittal of Reports Using NetDMR

PERMIT # CT0003921 Page 27

Unless otherwise approved by the Commissioner, on or before one-hundred and eighty (180) days afier issuance of this permit, the Permittee and/or the Signatory Authority shall electronically submit DMRs and reports required under this permit to the Department using NetDMR in satisfaction of the DMR submission requirement in paragraph (A) of this Section of this permit.

DMRs shall be submitted electronically to the Deparmaent no later than the 30th day of the month following the completed reporting period. All reports required under the permit, including any monitoring conducted more frequently than monthly or any additional monitoring conducted in accordance with 40 CFR 136, shall be submitted to the Department as an electronic attachment to the DMR in NetDMR. Once a Permittee begins submitting reports using NetDMR, it will no longer be required to submit hard copies of DMRs or other reports to the Department. Permittee shall also electronically file any written report of non-compliance described in Section paragraph (A) of this Section and in the following Section of this Permit as an attachment in NetDMR. NetDMR is accessed from: ~ov/netdmr.

(c) Submittal of NetDMR Opt-Out Requests

If the Permittee is able to demonstrate a reasonable basis, such as teclmical or administrative infeasibility, that precludes the use of NetDMR for electronically submitting DMRs and reports, the Commissioner may approve the submission of DMRs and other required reports in hard copy form ("opt-out request"). Opt-out requests must be submitted in writing to the Department for written approval on or before fifteen (15) days prior to the date a Permittee would be required under this permit to begin filing DMRs and other reports using NetDMR. This demonstration shall be valid for twelve (12) months from the date of the Department’s approval and shall thereupon expire. At such time, DMRs and reports shall be submitted electronically to the Department using NetDMR unless the Permittee submits a renewed opt-out request and such request is approved by the Department.

All opt-out requests and requests for the NetDMR subscriber form should be sent to the following address or by email at dep.netdmr@ct.gov:

Attn: NetDMR Coordinator Connecticut Department of Energy and Environmental Protection

79 Elm Street Hartford, CT 06106-5127

SECTION 8: RECORDING AND REPORTING OF VIOLATIONS, ADDITIONAL TESTING

REQUIREMENTS

(A) If any sample analysis indicates that an Aquatic Toxicity effluent limitation in Section 5 of this permit has been exceeded, or that the test was invalid, another sample of the effluent shall be collected and tested for Aquatic Toxicity and associated chemical parameters, as described above in Section 5 and Section 6, and the results reported to the Bureau of Materials Management and Compliance Assurance (Attn: DMR Processing), at the address listed above, within 30 days of the exceedance or invalid test. Results of all tests, whether valid or invalid, shall be reported.

(B) If any two consecutive test results or any three test results in a twelve month period indicates that an Aquatic Toxicity Limit has been exceeded, the Permittee shall immediately take all reasonable steps to eliminate toxicity wherever possible and shall submit a report to Bureau of Materials Management and Compliance Assurance (Attn: Aquatic Toxicity) for the review and approval of the Commissioner in accordance with section

PERMIT # CT0003921 Page 28

22a-430-3(j)(10)(c) of the RCSA describing proposed steps to eliminate the toxic impact of the discharge on the receiving water body. Such a report shall include a proposed time schedule to accomplish toxicity reduction and the Permit~ee shall comply with any schedule approved by the Commissioner.

The Permittee shall notify the Bureau of Materials Management and Compliance Assurance, Water Permitting and Enforcement Division, within 72 hours and in writing within thirty days of the discharge of any substance listed in the application but not listed in the permit if the concentration or quantity oftbat substance exceeds two times the level listed in the application.

SECTION 9: COMPLIANCE SCHEDULE

(A) The Permittee shall conduct wastewater analyses for Discharge Serial Numbers (DSN) 006, 009, and 011 and submit for the Commissioner’s review a cmnpleted "Attachment O, Part B Form" from the permit application for these wastewater discharges on or before sixty (60) days after the respective discharges have been initiated.

Specifically the following analyses from Attachment O, Part B, shall be conducted as follows; all parameters in Table 1, the toxic metals, cyanides and phenols, volatiles, acid and base/neutral compounds sectinn of Table 2, and any other substances listed in Tables 3 and 4 that are known or suspected to be present. All samples shall be collected and analyzed using methods specified under 40 CFR 136 or as otherwise approved by the Commissioner. All results shall be generated from representative samples obtained from each respective discharge.

(B) On or before 960 days after the discharge DSN 009 has been initiated, the Pennittee shall conduct a study and submit for the Commissioner’s review and written approval an engineering report which summarizes effluent data for total suspended solids (TSS), 5-day Biochanaical Oxygen Demand (BOD5), total copper, aluminum, nickel, zinc, and silver for DSN 009 over a two year period to confirm that the discharges ofTSS, BOD5, total copper, aluminum, nickel, zinc, and silver are protective of the waters of the state and consistent with Connecticut Water Quality Standards (WQS). The report shall include, but not be limited to the following: 1 ) a discussion of the comparability of the intake water and discharge analytical results for TSS, BOD5, total copper, aluminum, nickel, zinc, and silver for DSN 009 and 2) a recommendation on whether effluent limitations for TSS, BOD5, total copper, aluminum, nickel, zinc, and silver for DSN 009 are necessary for protection of the waters of the state.

(c) Pursuant to Section 316(b) of the federal Water Pollution Control Act, 33 U.S.C. § 1326(b), and Conn. Gen.

Stat. § 22a-430(a), the location, design, construction, and capacity of the cooling water intake structures shall reflect the Best Tecimology Available ("BTA") for minimizing adverse environmental impacts. The Commissioner has determined that the current location, design, construction and capacity of the cooling water intake structures at US Naval Submarine Base does not represent the BTA for minimizing adverse enviro~nnental impacts. The Coumfissioner has made the following BTA determination:

The Permittee shall install a new cooling tower system for the diesel generator heat exchanger as soon as possible but in no event later than December 31, 2015 in accordance with the following:

(a) On or before 365 days after the date of issuance of this permit, the Pennittee shall submit a proposal for the installation of a cooling tower.

(b) The Permittee shall submit to the Commissioner semi-annual status reports continuing beginning January 4, 2013 antil all actions required by Sections 9(C)(1) have been completed as approved to the Commissioner’s satisfaction, the Permittee shall submit a

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(E)

(G) progress report to the Commissioner describing the status of the actions the Permittee has undertaken pursuant to Sections 9(C)(1), All progress reports and attachmants shall be provided by the Permittee for tile sole purpose of informing the Commissioner of the Permittee’s progress towards performing the tasks specified by the BTA determination pursuant to Sections 9(C)(I).

(c) The Permittee shall perform the approved actions in accordance with the approved schedule, but in no event shall the approved actions be completed later than December 31, 2015.

Within 30 days after completing such actions, tile Permittee shall certify to the Conmaissioner in writing that the actions have been completed as approved.

On or before June 30, 2013, the Permittee shall conduct a chlorine impact study in the receiving stream for the discharge of potable water during winter for freeze protection associated with DSN 005 and submit for the Commissioner’s review and written approval an engineering report that summarizes the sampling for chlorine at the discharge and at the surface or slightly below the surface. The area impacted by chlorine values greater than

7.5 ug/1 should be delineated on a map of the piers area. This should include sampling 1 ) at the discharge and

2) at the surface directly below the discharge. The flow rate during time of sampling should be recorded. The chlorine impact study should be conducted during a worst case or high discharge rate scenario. It should be conducted when the freeze protection is running continuously. It should be conducted during low or ebbing tide.

The Permittee shall use best efforts to submit to tile Commissioner all documents required by this section of the permit in a complete and approvable form. If the Conmaissioner notifies the Pennittee that rely document or other action is deficient, and does not approve it with conditions or modifications, it is deemed disapproved, and the Permittee shall correct the deficiencies and resub~nit it within the time specified by the Connnissioner or, if no time is specified by the Commissioner, within thirty days of the Cormnissioner’s notice of deficiencies. In approving any document or other action under this Compliance Schedule, the Commissioner may approve the document or other action as submitted or performed or with such conditions or modifications as the Commissioner deems necessary to carry out the purposes of this Section of the permit. Nothing in this paragraph shall excuse noncompliance or delay.

Dates. The date of submission to the Commissioner of any document required by this section of the permit shall be the date such document is received by the Commissioner. The date of any notice by the Commissioner tuader this section of tile permit, including but not limited to notice of approval or disapproval of any document or other action, shall be the date such notice is personally delivered or the date three days after it is mailed by the Commissioner, whichever is earlier. Except as otherwise specified in this permit, the word "day" as used in this section of the permit means calendar day. Any document or action which is required by this section only of the permit, to be submitted, or performed, by a date which falls on, Saturday, Sunday, or, a legal Connecticut or federal holiday, shall be submitted or performed on or before the next day which is not a Saturday, Sunday, or legal Connecticut or federal holiday.

Notification of noncompliance. In the event that the Permittee becomes aware that it did not or may not comply, or did not or may not comply on time, with any requirement of this Section of the permit, or of any document required hereunder, the Permittee shall irtanediately notify the Commissioner mid shall take all reasonable steps to ensure that a~ay noncompliance or delay is avoided or, if unavoidable, is minimized to the greatest extent possible. In so notifying the Commissioner, the Permittee shall state in writing the reasons for the noncompliance or delay and propose, for the review and written approval of the Commissioner, dates by which compliance will be achieved, and the Permittee shall comply with any dates that may be approved in writing by the Commissioner. Notification by the Permittee shall not excuse noncompliance or delay, and the Connnissioner’s approval of any compliance dates proposed shall not excuse noncompliance or delay unless

PERMIT # CT0003921 Page 30

(H)

(i) specifically so stated by the Commissioner in writing.

Notice to Cormnissioner of changes. Within fifteen days of the date the Permittee becomes aware of a change in any information submitted to the Commissioner under this section of the permit, or that any such information was inaccurate or misleading or that any relevant information was omitted, the Permittee shall submit the correct or omitted information to the Commissioner.

Submission of documents. Any document, other than a discharge monitoring report, required to be submitted to the Commissioner under this section of the permit shall, unless otherwise specified in writing by the Commissioner, be directed to:

Enna Wilson, Sanitary Engineer Department of Energy & Enviromnental Protection Bureau of Materials Management and Compliance Assurance Water Permitting and Enforcement Division 79 Elm Street Hartford, CT 06106 5127

This permit is hereby issued on February 27, 201 2

Mac~:y’tvf~C leary Deputy Commissioner

MM~W

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