prev | next

9VAC25-31-220. Establishing limitations, standards, and other permit conditions.

In addition to the conditions established under 9VAC25-31-210 A, each VPDES permit shall include conditions meeting the following requirements when applicable.

A. 1. Technology-based effluent limitations and standards based on effluent limitations and standards promulgated under 301 of the CWA, on new source performance standards promulgated under 306 of CWA, on case-by-case effluent limitations determined under 402(a)(1) of CWA, or a combination of the three. For new sources or new dischargers, these technology-based limitations and standards are subject to the provisions of 9VAC25-31-180 B (protection period).

2. The board may authorize a discharger subject to technology-based effluent limitations guidelines and standards in a VPDES permit to forego sampling of a pollutant found at 40 CFR Subchapter N if the discharger has demonstrated through sampling and other technical factors that the pollutant is not present in the discharge or is present only at background levels from intake water and without any increase in the pollutant due to activities of the discharger. This waiver is good only for the term of the permit and is not available during the term of the first permit issued to a discharger. Any request for this waiver must be submitted when applying for a reissued permit or modification of a reissued permit. The request must demonstrate through sampling or other technical information, including information generated during an earlier permit term, that the pollutant is not present in the discharge or is present only at background levels from intake water and without any increase in the pollutant due to activities of the discharger. Any grant of the monitoring waiver must be included in the permit as an express permit condition and the reasons supporting the grant must be documented in the permit's fact sheet or statement of basis. This provision does not supersede certification processes and requirements already established in existing effluent limitations guidelines and standards.

B. Other effluent limitations and standards.

1. Other effluent limitations and standards under 301, 302, 303, 307, 318 and 405 of the CWA. If any applicable toxic effluent standard or prohibition (including any schedule of compliance specified in such effluent standard or prohibition) is promulgated under 307(a) of the CWA for a toxic pollutant and that standard or prohibition is more stringent than any limitation on the pollutant in the permit, the board shall institute proceedings under this chapter to modify or revoke and reissue the permit to conform to the toxic effluent standard or prohibition.

2. Standards for sewage sludge use or disposal under 405(d) of the CWA and Part VI (9VAC25-31-420 et seq.) of this chapter unless those standards have been included in a permit issued under the appropriate provisions of Subtitle C of the Solid Waste Disposal Act (42 USC 6901 et seq.), Part C of Safe Drinking Water Act (42 USC 300f et seq.), the Marine Protection, Research, and Sanctuaries Act of 1972 (33 USC 1401 et seq.), or the Clean Air Act (42 USC 4701 et seq.), or in another permit issued by the Department of Environmental Quality or any other appropriate state agency under another permit program approved by the administrator. When there are no applicable standards for sewage sludge use or disposal, the permit may include requirements developed on a case-by-case basis to protect public health and the environment from any adverse effects which may occur from toxic pollutants in sewage sludge. If any applicable standard for sewage sludge use or disposal is promulgated under 405(d) of the CWA and that standard is more stringent than any limitation on the pollutant or practice in the permit, the board may initiate proceedings under this chapter to modify or revoke and reissue the permit to conform to the standard for sewage sludge use or disposal.

3. Requirements applicable to cooling water intake structures at new facilities under 316 (b) of the CWA, in accordance with 9VAC25-31-165.

C. Reopener clause. For any permit issued to a treatment works treating domestic sewage (including sludge-only facilities), the board shall include a reopener clause to incorporate any applicable standard for sewage sludge use or disposal promulgated under 405(d) of the CWA. The board may promptly modify or revoke and reissue any permit containing the reopener clause required by this subdivision if the standard for sewage sludge use or disposal is more stringent than any requirements for sludge use or disposal in the permit, or controls a pollutant or practice not limited in the permit.

D. Water quality standards and state requirements. Any requirements in addition to or more stringent than promulgated effluent limitations guidelines or standards under 301, 304, 306, 307, 318 and 405 of the CWA necessary to:

1. Achieve water quality standards established under the law and 303 of the CWA, including state narrative criteria for water quality.

a. Limitations must control all pollutants or pollutant parameters (either conventional, nonconventional, or toxic pollutants) which the board determines are or may be discharged at a level which will cause, have the reasonable potential to cause, or contribute to an excursion above any Virginia water quality standard, including Virginia narrative criteria for water quality.

b. When determining whether a discharge causes, has the reasonable potential to cause, or contributes to an in-stream excursion above a narrative or numeric criteria within a Virginia water quality standard, the board shall use procedures which account for existing controls on point and nonpoint sources of pollution, the variability of the pollutant or pollutant parameter in the effluent, the sensitivity of the species to toxicity testing (when evaluating whole effluent toxicity), and where appropriate, the dilution of the effluent in the receiving water.

c. When the board determines, using the procedures in subdivision 1 b of this subsection, that a discharge causes, has the reasonable potential to cause, or contributes to an in-stream excursion above the allowable ambient concentration of a Virginia numeric criteria within a Virginia water quality standard for an individual pollutant, the permit must contain effluent limits for that pollutant.

d. Except as provided in this subdivision, when the board determines, using the procedures in subdivision 1 b of this subsection, toxicity testing data, or other information, that a discharge causes, has the reasonable potential to cause, or contributes to an in-stream excursion above a narrative criterion within an applicable Virginia water quality standard, the permit must contain effluent limits for whole effluent toxicity. Limits on whole effluent toxicity are not necessary where the board demonstrates in the fact sheet or statement of basis of the VPDES permit, using the procedures in subdivision 1 b of this subsection, that chemical-specific limits for the effluent are sufficient to attain and maintain applicable numeric and narrative Virginia water quality standards.

e. Where Virginia has not established a water quality criterion for a specific chemical pollutant that is present in an effluent at a concentration that causes, has the reasonable potential to cause, or contributes to an excursion above a narrative criterion within an applicable Virginia water quality standard, the board must establish effluent limits using one or more of the following options:

(1) Establish effluent limits using a calculated numeric water quality criterion for the pollutant which the board demonstrates will attain and maintain applicable narrative water quality criteria and will fully protect the designated use. Such a criterion may be derived using a proposed Virginia criterion, or an explicit policy or regulation interpreting Virginia's narrative water quality criterion, supplemented with other relevant information which may include: EPA's Water Quality Standards Handbook, August 1994, risk assessment data, exposure data, information about the pollutant from the Food and Drug Administration, and current EPA criteria documents;

(2) Establish effluent limits on a case-by-case basis, using EPA's water quality criteria, published under 307(a) of the CWA, supplemented where necessary by other relevant information; or

(3) Establish effluent limitations on an indicator parameter for the pollutant of concern, provided:

(a) The permit identifies which pollutants are intended to be controlled by the use of the effluent limitation;

(b) The fact sheet required by 9VAC25-31-280 sets forth the basis for the limit, including a finding that compliance with the effluent limit on the indicator parameter will result in controls on the pollutant of concern which are sufficient to attain and maintain applicable water quality standards;

(c) The permit requires all effluent and ambient monitoring necessary to show that during the term of the permit the limit on the indicator parameter continues to attain and maintain applicable water quality standards; and

(d) The permit contains a reopener clause allowing the board to modify or revoke and reissue the permit if the limits on the indicator parameter no longer attain and maintain applicable water quality standards.

f. When developing water quality-based effluent limits under this subdivision the board shall ensure that:

(1) The level of water quality to be achieved by limits on point sources established under this subsection is derived from, and complies with all applicable water quality standards; and

(2) Effluent limits developed to protect a narrative water quality criterion, a numeric water quality criterion, or both, are consistent with the assumptions and requirements of any available wasteload allocation for the discharge prepared by Virginia and approved by EPA pursuant to 40 CFR 130.7;

2. Attain or maintain a specified water quality through water quality related effluent limits established under the law and 302 of the CWA;

3. Conform to the conditions of a Virginia Water Protection Permit (VWPP) issued under the law and 401 of the CWA;

4. Conform to applicable water quality requirements under 401(a)(2) of the CWA when the discharge affects a state other than Virginia;

5. Incorporate any more stringent limitations, treatment standards, or schedule of compliance requirements established under the law or regulations in accordance with 301(b)(1)(C) of the CWA;

6. Ensure consistency with the requirements of a Water Quality Management plan approved by EPA under 208(b) of the CWA;

7. Incorporate 403(c) criteria under 40 CFR Part 125, Subpart M, for ocean discharges; or

8. Incorporate alternative effluent limitations or standards where warranted by fundamentally different factors, under 40 the CFR Part 125, Subpart D.

E. Technology-based controls for toxic pollutants. Limitations established under subsections A, B, or D of this section, to control pollutants meeting the criteria listed in subdivision 1 of this subsection. Limitations will be established in accordance with subdivision 2 of this subsection. An explanation of the development of these limitations shall be included in the fact sheet.

1. Limitations must control all toxic pollutants which the board determines (based on information reported in a permit application or in a notification required by the permit or on other information) are or may be discharged at a level greater than the level which can be achieved by the technology-based treatment requirements appropriate to the permittee; or

2. The requirement that the limitations control the pollutants meeting the criteria of subdivision 1 of this subsection will be satisfied by:

a. Limitations on those pollutants; or

b. Limitations on other pollutants which, in the judgment of the board, will provide treatment of the pollutants under subdivision 1 of this subsection to the levels required by the law and 40 CFR Part 125, Subpart A.

F. A notification level which exceeds the notification level of 9VAC25-31-200 A 1 a, b, or c, upon a petition from the permittee or on the board's initiative. This new notification level may not exceed the level which can be achieved by the technology-based treatment requirements appropriate to the permittee.

G. Twenty-four-hour reporting. Pollutants for which the permittee must report violations of maximum daily discharge limitations under 9VAC25-31-190 L 7 b (3) (24-hour reporting) shall be listed in the permit. This list shall include any toxic pollutant or hazardous substance, or any pollutant specifically identified as the method to control a toxic pollutant or hazardous substance.

H. Durations for permits, as set forth in 9VAC25-31-240.

I. Monitoring requirements. The following monitoring requirements:

1. Requirements concerning the proper use, maintenance, and installation, when appropriate, of monitoring equipment or methods (including biological monitoring methods when appropriate);

2. Required monitoring including type, intervals, and frequency sufficient to yield data which are representative of the monitored activity including, when appropriate, continuous monitoring;

3. Applicable reporting requirements based upon the impact of the regulated activity and as specified in 9VAC25-31-190, subdivisions 5 through 8 of this subsection, and Part XI (9VAC25-31-950 et seq.) of this chapter. Reporting shall be no less frequent than specified in the above regulation;

4. To assure compliance with permit limitations, requirements to monitor:

a. The mass (or other measurement specified in the permit) for each pollutant limited in the permit;

b. The volume of effluent discharged from each outfall;

c. Other measurements as appropriate including pollutants in internal waste streams; pollutants in intake water for net limitations; frequency, rate of discharge, etc., for noncontinuous discharges; pollutants subject to notification requirements; and pollutants in sewage sludge or other monitoring as specified in Part VI (9VAC25-31-420 et seq.) of this chapter; or as determined to be necessary on a case-by-case basis pursuant to the law and 405(d)(4) of the CWA; and

d. According to test procedures approved under 40 CFR Part 136 for the analyses of pollutants having approved methods under that part, or alternative EPA approved methods, and according to a test procedure specified in the permit for pollutants with no approved methods;

5. Except as provided in subdivisions 7 and 8 of this subsection, requirements to report monitoring results shall be established on a case-by-case basis with a frequency dependent on the nature and effect of the discharge, but in no case less that once a year. For sewage sludge use or disposal practices, requirements to monitor and report results shall be established on a case-by-case basis with a frequency dependent on the nature and effect of the sewage sludge use or disposal practice; minimally this shall be as specified in Part VI (9VAC25-31-420 et seq.) of this chapter (where applicable), but in no case less than once a year. All results shall be electronically reported in compliance with 40 CFR Part 3 (including, in all cases, 40 CFR Part 3 Subpart D), 9VAC25-31-110, and Part XI (9VAC25-31-950 et seq.) of this chapter;

6. Requirements to report monitoring results for storm water discharges associated with industrial activity which are subject to an effluent limitation guideline shall be established on a case-by-case basis with a frequency dependent on the nature and effect of the discharge, but in no case less than once a year;

7. Requirements to report monitoring results for storm water discharges associated with industrial activity (other than those addressed in subdivision 6 of this subsection) shall be established on a case-by-case basis with a frequency dependent on the nature and effect of the discharge. At a minimum, a permit for such a discharge must require:

a. The discharger to conduct an annual inspection of the facility site to identify areas contributing to a storm water discharge associated with industrial activity and evaluate whether measures to reduce pollutant loading identified in a storm water pollution prevention plan are adequate and properly implemented in accordance with the terms of the permit or whether additional control measures are needed;

b. The discharger to maintain for a period of three years a record summarizing the results of the inspection and a certification that the facility is in compliance with the plan and the permit, and identifying any incidents of noncompliance;

c. Such report and certification be signed in accordance with 9VAC25-31-110; and

d. Permits for storm water discharges associated with industrial activity from inactive mining operations may, where annual inspections are impracticable, require certification once every three years by a Registered Professional Engineer that the facility is in compliance with the permit, or alternative requirements; and

8. Permits which do not require the submittal of monitoring result reports at least annually shall require that the permittee report all instances of noncompliance not reported under 9VAC25-31-190 L 1, 4, 5, 6, and 7 at least annually.

J. Pretreatment program for POTWs. Requirements for POTWs to:

1. Identify, in terms of character and volume of pollutants, any significant indirect dischargers into the POTW subject to pretreatment standards under 307(b) of the CWA and Part VII (9VAC25-31-730 et seq.) of this chapter;

2. Submit a local program when required by and in accordance with Part VII of this chapter to assure compliance with pretreatment standards to the extent applicable under 307(b) of the CWA. The local program shall be incorporated into the permit as described in Part VII of this chapter. The program shall require all indirect dischargers to the POTW to comply with the reporting requirements of Part VII of this chapter;

3. Provide a written technical evaluation of the need to revise local limits under Part VII of this chapter following permit issuance or reissuance; and

4. For POTWs which are sludge-only facilities, a requirement to develop a pretreatment program under Part VII of this chapter when the board determines that a pretreatment program is necessary to assure compliance with Part VI of this chapter.

K. Best management practices to control or abate the discharge of pollutants when:

1. Authorized under 304(e) of the CWA for the control of toxic pollutants and hazardous substances from ancillary industrial activities;

2. Authorized under 402(p) of the CWA for the control of storm water discharges;

3. Numeric effluent limitations are infeasible; or

4. The practices are reasonably necessary to achieve effluent limitations and standards or to carry out the purposes and intent of the law and the CWA.

L. Reissued permits.

1. In the case of effluent limitations established on the basis of 402(a)(1)(B) of the CWA, a permit may not be renewed, reissued, or modified on the basis of effluent guidelines promulgated under 304(b) of the CWA subsequent to the original issuance of such permit, to contain effluent limitations which are less stringent than the comparable effluent limitations in the previous permit. In the case of effluent limitations established on the basis of 301(b)(1)(C) or 303(d) or (e) of the CWA, a permit may not be renewed, reissued, or modified to contain effluent limitations which are less stringent than the comparable effluent limitations in the previous permit except in compliance with 303(d)(4) of the CWA.

2. Exceptions. A permit with respect to which subdivision 1 of this subsection applies may be renewed, reissued, or modified to contain a less stringent effluent limitation applicable to a pollutant, if:

a. Material and substantial alterations or additions to the permitted facility occurred after permit issuance which justify the application of a less stringent effluent limitation;

b. (1) Information is available which was not available at the time of permit issuance (other than revised regulations, guidance, or test methods) and which would have justified the application of a less stringent effluent limitation at the time of permit issuance; or

(2) The board determines that technical mistakes or mistaken interpretations of law were made in issuing the permit under 402(a)(1)(B) of the CWA;

c. A less stringent effluent limitation is necessary because of events over which the permittee has no control and for which there is no reasonably available remedy;

d. The permittee has received a permit modification under the law and 301(c), 301(g), 301(h), 301(i), 301(k), 301(n), or 316(a) of the CWA; or

e. The permittee has installed the treatment facilities required to meet the effluent limitations in the previous permit and has properly operated and maintained the facilities but has nevertheless been unable to achieve the previous effluent limitations, in which case the limitations in the reviewed, reissued, or modified permit may reflect the level of pollutant control actually achieved (but shall not be less stringent than required by effluent guidelines in effect at the time of permit renewal, reissuance, or modification).

Subdivision 2 b of this subsection shall not apply to any revised waste load allocations or any alternative grounds for translating water quality standards into effluent limitations, except where the cumulative effect of such revised allocations results in a decrease in the amount of pollutants discharged into the concerned waters, and such revised allocations are not the result of a discharger eliminating or substantially reducing its discharge of pollutants due to complying with the requirements of the law or the CWA or for reasons otherwise unrelated to water quality.

3. In no event may a permit with respect to which subdivision 2 of this subsection applies be renewed, reissued, or modified to contain an effluent limitation which is less stringent than required by effluent guidelines in effect at the time the permit is renewed, reissued, or modified. In no event may such a permit to discharge into waters be renewed, issued, or modified to contain a less stringent effluent limitation if the implementation of such limitation would result in a violation of a Virginia water quality standard applicable to such waters.

M. For a privately owned treatment works, any conditions expressly applicable to any user, as a limited co-permittee, that may be necessary in the permit issued to the treatment works to ensure compliance with applicable requirements under this part. Alternatively, the board may issue separate permits to the treatment works and to its users, or may require a separate permit application from any user. The board's decision to issue a permit with no conditions applicable to any user, to impose conditions on one or more users, to issue separate permits, or to require separate applications, and the basis for that decision, shall be stated in the fact sheet for the draft permit for the treatment works.

N. Any conditions imposed in grants made by the board to POTWs under 201 and 204 of the CWA which are reasonably necessary for the achievement of effluent limitations under 301 of the CWA and the law.

O. Requirements governing the disposal of sewage sludge from publicly owned treatment works or any other treatment works treating domestic sewage for any use regulated by Part VI of this chapter.

P. When a permit is issued to a facility that may operate at certain times as a means of transportation over water, a condition that the discharge shall comply with any applicable regulations promulgated by the secretary of the department in which the Coast Guard is operating, that establish specifications for safe transportation, handling, carriage, and storage of pollutants.

Q. Navigation. Any conditions that the Secretary of the Army considers necessary to ensure that navigation and anchorage will not be substantially impaired in accordance with 9VAC25-31-330.

Statutory Authority

62.1-44.15 of the Code of Virginia; 402 of the Clean Water Act; 40 CFR Parts 122, 123, 124, 403, and 503.

Historical Notes

Derived from Virginia Register Volume 12, Issue 20, eff. July 24, 1996; amended, Virginia Register Volume 16, Issue 25, eff. September 27, 2000; Volume 17, Issue 13, eff. April 11, 2001; Volume 18, Issue 9, eff. February 15, 2002; Volume 21, Issue 9, eff. February 9, 2005; Volume 22, Issue 24, eff. September 6, 2006; Volume 24, Issue 6, eff. January 1, 2008; Volume 28, Issue 10, eff. February 15, 2012; Volume 33, Issue 22, eff. July 26, 2017.


prev | next | new search | table of contents | home