# PROPOSED RULEMAKINGS

**ENVIRONMENTAL QUALITY BOARD** 

**[ 25 PA CODE CHS. 121 AND 139 ] Measurement and Reporting of Condensable Par** 

**ticulate Matter Emissions**

The Environmental Quality Board (Board) proposes toamend Chapters 121 and 139 (relating to general provisions; and sampling and testing) to read as set forth in Annex A.

The proposed rulemaking would amend Chapter 139 to update and clarify what sampling and testing methodsare used to demonstrate compliance with certain particulate matter (PM) emission limitations. The proposedamendment to § 139.12(a) (relating to emissions of particulate matter) explains the process used for determining compliance with filterable PM emission standards in§§ 123.11—123.13 (relating to combustion units; incinerators; and processes). The proposed amendments to§ 139.12(b) and (c) explain the process used for determining compliance with filterable and condensable PM emission limitations. The proposed amendment to § 139.12(d)explains the compliance demonstration process. The proposed amendment to § 139.53 (relating to filing monitoring reports) specifies where monitoring reports must be filed.

In addition to these substantive changes, the proposedrulemaking would amend Chapter 121 to add the following terms and definitions in § 121.1 (relating to definitions): ‘‘condensable particulate matter’’ and ‘‘filterable particulate matter.’’

This proposed rulemaking was adopted by the Board at its meeting on April 17, 2012.

A. Effective Date

This proposed rulemaking will be effective upon finalform publication in the Pennsylvania Bulletin

. B. Contact Persons

For further information, contact Arleen Shulman, Chief, Division of Air Resource Management, P. O. Box 8468, Rachel Carson State Office Building, Harrisburg, PA17105-8468, (717) 772-3436; or Robert ‘‘Bo’’ Reiley, Assistant Counsel, Bureau of Regulatory Counsel, P. O. Box 8464, Rachel Carson State Office Building, Harrisburg, PA 17105-8464, (717) 787-7060. Information regardingsubmitting comments on this proposed rulemaking appears in Section J of this preamble. Persons with a disability may use the Pennsylvania AT&T Relay Service, (800) 654-5984 (TDD users) or (800) 654-5988 (voice users). This proposed rulemaking is available on the Department of Environmental Protection’s (Department) web site at www.depweb.state.pa.us (DEP Search/Keyword: Public Participation).

C. Statutory Authority

This proposed rulemaking is authorized under section 5(a)(1) of the Air Pollution Control Act (act) (35 P. S. § 4005(a)(1)), which grants the Board the authority to adopt rules and regulations for the prevention, control,reduction and abatement of air pollution in this Commonwealth, and section 5(a)(8) of the act, which grants theBoard the authority to adopt rules and regulations designed to implement the Clean Air Act (CAA) (42 U.S.C.A. §§ 7401—7671q). D. Background and Purpose PM is the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, soot and smoke, are large or dark enough to be seen with the naked eye. Other particles are so small they can only be detected using an electron microscope. PM includes ‘‘inhalable coarse particles,’’ with diameterslarger than 2.5 micrometers and smaller than 10 micrometers (PM-10), DEP and ‘‘fine particles,’’ with diameters that are 2.5 micrometers and smaller (PM2.5 ).Epidemiological studies have shown a significant correlation between elevated levels of PM 2.5 and a number of serious health effects, including premature mortality, aggravation of respiratory and cardiovascular disease (as indicated by increased hospital admissions, emergency room visits, absences from school or work and restricted activity days), lung disease, decreased lung function, asthma attacks and certain cardiovascular problems such as heart attacks and cardiac arrhythmia. See 70 FR 944 (January 5, 2005) and 72 FR 20586 (April 25, 2007).

The United States Environmental Protection Agency (EPA) established the PM National Ambient Air Quality Standard (NAAQS) at 36 FR 8186 (April 30, 1971). The test method specified for determining attainment of the original standards was the high volume sampler, which collects filterable PM up to a nominal size of 25 to 45 micrograms (referred to as total suspended particulate). See 75 FR 80118, 80120 (December 21, 2010).

The Department of Environmental Resources, the predecessor agency to the Department, initially promulgated PM emission standards for combustion units, incinerators and processes under §§ 123.11—123.13 at 1 Pa.B. 1804(September 11, 1971). Test methods for determining emissions of PM were promulgated under § 139.12 at 2 Pa.B. 383 (March 4, 1972). These methods included the use of both dry filters and wet impingers to test for filterable and condensable PM.

The Department deleted the requirement to use wet impingers to test for PM at 27 Pa.B. 6804 (December 27, 1997) because that provision was more stringent than theapplicable Federal requirement and provided little environmental benefit. Under this change, the owners and operators of existing stationary sources subject to§§ 123.11—123.13 are only required to test for compliance with filterable PM emission standards.

The EPA revised the PM NAAQS to add a new standard for fine particles, using PM 2.5 as the indicator, at 62 FR 38652 (July 18, 1997). The EPA set the health-based (primary) and welfare-based (secondary) PM 2.5 annual standard at a level of 15 micrograms per cubic meter (μg/m 3 ) and the 24-hour standard at a level of 65 μg/m 3 . The health-based primary standard is designed to protect human health from elevated levels of PM 2.5 . The secondary standard is designed to protect against major environmental effects of PM 2.5 such as visibility impairment, soiling and materials damage.

Subsequently, at 71 FR 61236 (October 17, 2006), the EPA lowered the primary and secondary 24-hour NAAQS for PM 2.5 to 35 μg/m 3 from 65 μg/m 3 . The following counties or portions thereof have been designated by the EPA as nonattainment for the 2006 fine particulate matter 24-hour NAAQS: Allegheny (partial), Armstrong(partial), Beaver, Bucks, Butler, Cambria, Chester, Cumberland, Dauphin, Delaware, Greene (partial), Indiana (partial), Lancaster, Lawrence (partial), Lebanon, Lehigh, 

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**PENNSYLVANIA BULLETIN, VOL. 42, NO. 27, JULY 7, 2012**Montgomery, Northampton, Philadelphia, Pittsburgh/ Liberty-Clairton (partial), Washington, Westmoreland and York. See 74 FR 58688, 58758 (November 13, 2009).

Section 110 of the CAA (42 U.S.C.A. § 7410) requires state and local air pollution control agencies to develop,and submit to the EPA for approval, State Implementation Plans (SIPs) that provide for the attainment, maintenance and enforcement of the NAAQS in each air quality control region (or portion thereof) within each state. The emissions inventories and analyses used in the state’s attainment demonstrations must consider PM-10 and PM 2.5 emissions from stationary sources that are significant contributors of primary PM-10 and PM2.5 emissions.

Section 51.50 of 40 CFR (relating to what definitions apply to this subpart) defines primary PM-10 and PM2.5 as including both the filterable and condensable fractions of PM. Filterable PM consists of those particles that are directly emitted by a source as a solid or liquid at the stack (or similar release conditions) and captured on the filter of a stack test train. Condensable PM is the material that is in vapor phase at stack conditions but condenses or reacts, or both, upon cooling and dilution in the ambient air to form solid or liquid PM immediatelyafter discharge from the stack. The Commonwealth defines primary PM-10 and PM2.5 in a similar manner asmeasured by the applicable reference method or equivalent method. See § 121.1.

The EPA promulgated revisions to its test methods for measuring filterable PM-10 and PM 2.5 and for measuring condensable PM emissions from stationary sources at 75 FR 80118. The final amendments to Method 201A add a particle-sizing device to allow for sampling of particulate matter with mean aerodynamic diameters less than or equal to 2.5 micrometers (PM 2.5 or fine particulate matter). The final amendments to Method 202 revise the sample collection and recovery procedures of the method to reduce the formation of reaction artifacts that could lead to inaccurate measurements of condensable PM. TheDepartment incorporates Methods 201A and 202 by reference in the Department’s Source Testing Manual under § 139.4(5) (relating to references).

Proposed § 139.12(a) clarifies that the owner and operator subject to the PM emission standards under §§ 123.11—123.13 are required to test only for filterable PM as provided in paragraphs (1)—(5). These owners and operators would not be subject to the filterable andcondensable PM test requirements proposed under subsections (b)—(d).

Proposed § 139.12(b) clarifies that the owner and operator of a stationary source subject to PM-10 and PM2.5 emission limitations shall determine compliance with those limitations by using tests measuring both filterable and condensable PM. This subsection also clarifies that the owner and operator of a stationary source subject to applicability determinations under Chapter 127, Subchapters D and E (relating to prevention of significant deterioration of air quality; and new source review) shall demonstrate compliance for filterable and condensable PM-10 and PM 2.5 emissions.

Additionally, the proposed amendment to § 139.12(c) explains the process used for determining compliance with filterable and condensable PM emission limitations.

The proposed amendment to § 139.12(d) explains the compliance demonstration process for the measurement and reporting of filterable and condensable PM. The proposed amendment to § 139.53 amends where monitoring reports must be filed.

The Department consulted with the Air Quality Technical Advisory Committee (AQTAC) on the proposed rulemaking on October 20, 2011. Prior to concurring with the Department’s recommendation to present the proposed rulemaking to the Board for consideration, the AQTAC recommended that clarifications be made regarding the definition of ‘‘condensable particulate matter’’ and the effective compliance date for the provisions in § 139.12(b) and (d). The proposed rulemaking was revised to address the AQTAC’s concerns. The Department also consulted with the Citizens Advisory Council Air Committee on January 31, 2012.

Because this proposed rulemaking updates and clarifies the applicability of certain requirements to which the owners and operators of certain stationary sources are already subject, the proposed rulemaking does not impose new or additional requirements or compliance costs on these owners and operators.

The proposed rulemaking is reasonably necessary to attain and maintain the 1997 annual and 2006 24-hour PM 2.5 NAAQS and to satisfy related CAA requirements.

The proposed rulemaking will be submitted to the EPAupon final-form publication as a revision to the Commonwealth’s SIP.

E. Summary of Regulatory Requirements

§ 121.1. Definitions

The proposed rulemaking amends § 121.1 to add definitions for the terms ‘‘condensable particulate matter’’ and ‘‘filterable particulate matter’’ to support the proposedamendments to Chapter 139. These definitions are consistent with the Federal definitions.

§ 139.12. Emissions of particulate matter

The proposed rulemaking designates the existing language in § 139.12 to proposed subsection (a) and adds proposed subsections (b)—(d) to clarify filterable andcondensable PM testing applicability requirements. Subsection (a) clarifies that the listed test procedures are todetermine emissions of filterable PM only and not condensable PM from affected stationary sources for compliance with the PM emission standards in §§ 123.11— 123.13.

Subsection (b) provides that the owner or operator of a stationary source subject to emission limitations for PM-10 and PM 2.5 or to applicability determinations required under Chapter 127, Subchapters D and E shalldemonstrate compliance for both filterable and condensable PM-10 and PM 2.5 emissions.

Subsection (c) provides that compliance with a PM emission limitation issued by the Department prior to January 1, 2011, may not be based on condensable PM unless required by the terms and conditions of a plan approval, operating permit or the SIP in 40 CFR 52.2020 (relating to identification of plan).

Subsection (d) provides that a compliance demonstration required under subsection (b) or (c) must include the measurement and reporting of filterable and condensable PM. Test methods and procedures must be equivalent to those specified in § 139.4(5). 

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**PENNSYLVANIA BULLETIN, VOL. 42, NO. 27, JULY 7, 2012**§ 139.53. Filing monitoring reports

The proposed rulemaking amends § 139.53 to specify that the periodic emissions monitoring test reports shall be submitted to the applicable Regional Air Program Manager instead of the Regional Air Pollution Control Engineer and a copy of the report shall be submitted tothe Chief of the Division of Source Testing and Monitoring. This proposed amendment makes the filing of monitoring reports more efficient and timely.

F. Benefits, Costs and Compliance

Benefits

The proposed rulemaking would account for emissions of condensable PM, which contribute to the formation of PM 2.5 in the atmosphere. Because condensable emissions exist almost entirely in the 2.5 micrometer range andsmaller, and epidemiological studies have shown a significant correlation between elevated PM 2.5 levels and premature death, aggravation of heart and lung disease and asthma attacks, attaining and maintaining the PM2.5 NAAQS is inherently more significant to the management of public health and welfare effects than attaining andmaintaining prior PM NAAQS addressing larger particles. Therefore, it is important that the Commonwealth’s air quality management of PM 2.5 promote a comprehensive and inclusive approach to measuring condensable PM emissions. Improved data will support development ofbetter control strategies to reduce emissions of condensable PM and improve public health and welfare in areas that are designated as nonattainment for PM 2.5 . Compliance Costs

Because this proposed rulemaking updates and clarifies the applicability of certain requirements to which owners and operators of certain stationary sources are already subject, the proposed rulemaking does not impose new oradditional requirements or compliance costs on the owners and operators of these existing stationary sources.

Compliance Assistance Plan

The regulated community is comprised of companies with sophisticated and experienced environmental staff. The owners and operators of these facilities have prior experience with regulatory programs and are technically capable of implementing the amended EPA test methods. The Department will post information on its web site to assist the public in understanding the requirements placed on the owners and operators of subject facilities.

Paperwork Requirements

Because this proposed rulemaking updates and clarifies the applicability of certain requirements to which the owners and operators of certain stationary sources are already subject, the proposed rulemaking does not impose additional paperwork requirements on the owners and operators of these existing stationary sources.

G. Pollution Prevention

The Pollution Prevention Act of 1990 (42 U.S.C.A.§§ 13101—13109) established a National policy that promotes pollution prevention as the preferred means forachieving state environmental protection goals. The Department encourages pollution prevention, which is the reduction or elimination of pollution at its source, through the substitution of environmentally friendly materials, more efficient use of raw materials and the incorporationof energy efficiency strategies. Pollution prevention practices can provide greater environmental protection with greater efficiency because they can result in significant cost savings to facilities that permanently achieve or move beyond compliance. The major pollution prevention mechanism in the proposed rulemaking is to ensure acomprehensive, inclusive and accurate approach to measuring condensable PM emissions. Improved data will support the development of better control strategies to reduce emissions of condensable PM and improve public health and welfare in areas that are designated as nonattainment for PM 2.5 .
H. Sunset Review

These regulations will be reviewed in accordance with the sunset review schedule published by the Department to determine whether the regulations effectively fulfill the goals for which they were intended.

I. Regulatory Review

Under section 5(a) of the Regulatory Review Act (71 P. S. § 745.5(a)), on June 22, 2012, the Department submitted a copy of this proposed rulemaking and a copyof a Regulatory Analysis Form to the Independent Regulatory Review Commission (IRRC) and to the Chairpersons of the House and Senate Environmental Resources and Energy Committees. A copy of this material is available to the public upon request.

Under section 5(g) of the Regulatory Review Act, IRRCmay convey any comments, recommendations or objections to the proposed rulemaking within 30 days of theclose of the public comment period. The comments, recommendations or objections must specify the regulatory review criteria which have not been met. The Regulatory Review Act specifies detailed procedures for review, priorto final publication of the rulemaking, by the Department, the General Assembly and the Governor of comments, recommendations or objections raised.

J. Public Comments

Written comments. Interested persons are invited to submit comments, suggestions or objections regarding the proposed rulemaking to the Environmental QualityBoard, P. O. Box 8477, Harrisburg, PA 17105-8477 (express mail: Rachel Carson State Office Building, 16th Floor, 400 Market Street, Harrisburg, PA 17101-2301). Comments submitted by facsimile will not be accepted. Comments, suggestions or objections must be received by the Board on or before September 10, 2012. Interested persons may also submit a summary of their comments to the Board. The summary may not exceed one page in length and must also be received on or before September 10, 2012. The one-page summary will be provided to each member of the Board in the agenda packet distributed prior to the meeting at which the final regulation will be considered.

Electronic comments. Comments may be submitted electronically to the Board at RegComments@pa.gov andmust also be received by the Board on or before September 10, 2012. A subject heading of the proposed rulemaking and a return name and address must be included in each transmission. If an acknowledgement of electronic comments is not received by the sender within 2 working days, the comments should be retransmitted to the Board to ensure receipt. 

### PROPOSED RULEMAKINGS 4365

**PENNSYLVANIA BULLETIN, VOL. 42, NO. 27, JULY 7, 2012**K. Public Hearings
The Board will hold three public hearings for thepurpose of accepting comments on the proposed rulemaking. The hearings will be held as follows: August 7, 2012

1 p.m. Department of Environmental Protection Southwest Regional Office Monongahela Conference Room 400 Waterfront Drive Pittsburgh, PA 15222-4745 August 9, 2012

1 p.m. Department of Environmental Protection Southeast Regional Office Schuylkill River Conference Room 2 East Main Street Norristown, PA 19401 August 10, 2012

1 p.m. Department of Environmental Protection Rachel Carson State Office Building Conference Room 105 400 Market Street Harrisburg, PA 17105
Persons wishing to present testimony at a hearing are requested to contact the Environmental Quality Board, P. O. Box 8477, Harrisburg, PA 17105-8477, (717) 787- 4526 at least 1 week in advance of the hearing to reserve a time to present testimony. Oral testimony is limited to 10 minutes for each witness. Witnesses are requested to submit three written copies of their oral testimony to the hearing chairperson at the hearing. Organizations are limited to designating one witness to present testimony on their behalf at each hearing.

Persons in need of accommodations as provided for inthe Americans with Disabilities Act of 1990 should contact the Board at (717) 787-4526 or through the Pennsylvania AT&T Relay Service at (800) 654-5984 (TDD) or (800) 654-5988 (voice users) to discuss how the Board may accommodate their needs. MICHAEL L. KRANCER, Chairperson

Fiscal Note: 7-477. No fiscal impact; (8) recommends adoption.

Annex A

TITLE 25. ENVIRONMENTAL PROTECTION

PART I. DEPARTMENT OF ENVIRONMENTAL PROTECTION
Subpart C. PROTECTION OF NATURAL RESOURCES

ARTICLE III. AIR RESOURCES

CHAPTER 121. GENERAL PROVISIONS

§ 121.1. Definitions.

The definitions in section 3 of the act (35 P. S. § 4003) apply to this article. In addition, the following words and terms, when used in this article, have the following meanings, unless the context clearly indicates otherwise:

*****
Condensable particulate matter —Material that isvapor phase at stack conditions but which condenses or reacts, or both, upon cooling and dilutionin the ambient air to form solid or liquid particulate matter immediately after discharge from the stack. All condensable particulate matter, if present from a source, is typically in the PM2.5 size fraction and therefore all of it is a component of both primary PM2.5 and primary PM-10.

***** Filterable particulate matter —Particles directly emitted by a source as a solid or liquid at the stack, or similar release conditions, and captured on the filter of a stack test train.

*****

CHAPTER 139. SAMPLING AND TESTING Subchapter A. SAMPLING AND TESTING METHODS AND PROCEDURES

STATIONARY SOURCES § 139.12. Emissions of particulate matter.

(a) Tests for determining emissions of filterable particulate matter from stationary sources to demonstrate compliance with the particulate matter emissionstandards in §§ 123.11—123.13 (relating to combustion units; incinerators; and processes) shall conform with the following:

(1) Test methods for particulate matter emissions shallinclude dry filters and provide for at least a 95% collection efficiency of particulate matter.

***** (5) Results shall be calculated based upon sample train component weights specified in § 139.4(5). Results shall be reported as pounds of particulate matter per hour and in accordance with the units specified in §§ 123.11—
123.13 

### [ (relating to particulate matter emissions) 

### ]

.

(b) The owner or operator of a stationary source subject to emission limitations for PM-10 and PM2.5 or to applicability determinations required under Chapter 127, Subchapters D and E (relating toprevention of significant deterioration of air quality; and new source review) shall demonstrate compliance for filterable and condensable PM-10 and PM2.5 emissions.

(c) Compliance with a particulate matter emission limitation issued by the Department prior to January 1, 2011, will not be based on condensable particulate matter unless required under the terms and conditions of a plan approval, operating permit or the State Implementation Plan codified in 40 CFR 52.2020 (relating to identification of plan).

(d) A compliance demonstration required under subsection (b) or (c) must include the measurementand reporting of filterable and condensable particulate matter. Test methods and procedures must be equivalent to those specified in § 139.4(5).
Subchapter B. MONITORING DUTIES OF CERTAIN SOURCES

GENERAL § 139.53. Filing monitoring reports.

(a) Persons responsible for the operation of sources subject to monitoring requirements established by order, by condition of plan approval or permit or under this subchapter, shall submit periodic reports of the results of tests, samples or observations conducted, obtained or made in accordance with the methods or techniques referenced in § 139.52 (relating to monitoring methods and techniques). The reports shall be:

***** 

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**PENNSYLVANIA BULLETIN, VOL. 42, NO. 27, JULY 7, 2012**(4) Submitted to the Regional Air 

### [ Pollution Control Engineer 

### ] Program Manager for the region of the Department in which the source is located and a copy to the Chief of the Division of Source Testing and Monitoring

.

*****

[Pa.B. Doc. No. 12-1291. Filed for public inspection July 6, 2012, 9:00 a.m.]



### [ 25 PA. CODE CH. 93 ] **Triennial Review of Water Quality Standards**

The Environmental Quality Board (Board) proposes to amend Chapter 93 (relating to water quality standards) to read as set forth in Annex A.

This proposed rulemaking was adopted by the Board at its April 17, 2012, meeting.

A. Effective Date

This proposed rulemaking will be effective upon finalform publication in the Pennsylvania Bulletin

. B. Contact Persons

For further information, contact Rodney A. Kime, Chief, Division of Water Quality Standards, Bureau of Point and Non-Point Source Management, 11th Floor, Rachel Carson State Office Building, P. O. Box 8774, Harrisburg,PA 17105-8774, (717) 787-9637; or Michelle Moses, Assistant Counsel, Bureau of Regulatory Counsel, 9th Floor, Rachel Carson State Office Building, P. O. Box 8464, Harrisburg, PA 17105-8464, (717) 787-7060. Persons with a disability may use the AT&T Relay Service, (800) 654-5984 (TDD users) or (800) 654-5988 (voice users). This proposed rulemaking is available on the Department of Environmental Protection’s (Department) web site at http://www.depweb.state.pa.us.

C. Statutory Authority

These proposed amendments are made under the authority of sections 5(b)(1) and 402 of The Clean Streams Law (act) (35 P. S. §§ 691.5(b)(1) and 691.402), which authorize the Board to develop and adopt rules and regulations to implement the act, and section 1920-A of The Administrative Code of 1929 (71 P. S. § 510-20), which grants to the Board the power and duty to formulate, adopt and promulgate rules and regulationsfor the proper performance of the work of the Department. In addition, section 303 of the Federal Clean Water Act (33 U.S.C.A. § 1313) sets forth requirements for water quality standards and 40 CFR 131.41 (relating to bacteriological criteria for those states not complying with Clean Water Act section 303(i)(1)(A)) sets forth bacteriacriteria for coastal recreation waters in the Commonwealth.

D. Background and Purpose of the Amendment

The water quality standards, which are generally codified in Chapter 93, are designed to implement sections 5 and 402 of act and section 303 of the Clean Water Act. This proposed rulemaking fulfills the Federally-required triennial review of water quality standards as mandated by the Clean Water Act (33 U.S.C.A. §§ 1251—1387). Thewater quality standards consist of the existing and designated uses of the surface waters of the Commonwealth, along with the specific numerical and narrative criteria necessary to achieve and maintain those uses, and an antidegradation policy. Thus, water quality standards are in-stream water quality goals that are implemented byimposing specific regulatory requirements, such as treatment requirements, best management practices and effluent limitations, on individual sources of pollution.

Water quality standards are an important element of the Commonwealth’s water quality management program. Some type of water quality standard has been in use for approximately 75 years in this Commonwealth. One of the early actions after the Sanitary Water Board (SWB) was created in 1923 was to classify streams by priority for water quality management actions. In 1947, the SWB classified the streams in this Commonwealth by the degree of treatment that had to be provided before discharge could occur. Article 301—Water Quality Control, which specifically contained water uses, general and specific water quality criteria, and designated water uses, was added to the SWB’s rules and regulations on June 28, 1967. The SWB was then abolished on January 19, 1971, following the formation of the Department of Environmental Resources (DER) in 1968. Responsibilities for developing and maintaining the water quality criteriaand standards and other related regulations were transferred to the DER. New or revised specific water quality criteria and standards were developed by the DER for the surface waters in this Commonwealth and formally adopted into Chapter 93 at 1 Pa.B. 1804 (September 11, 1971).

The DER completed its first major review and complete overhaul of the water quality criteria and standards in 1979. After a series of public hearings and extensive public participation, revisions to the water quality criteria and uses were incorporated into Chapter 93. The United States Environmental Protection Agency (EPA) Region III formally approved the revisions to the Commonwealth’s water quality standards on January 26, 1981. Section 303(c)(1) of the Clean Water Act requires that states periodically, but at least once every 3 years, review andrevise as necessary, their water quality standards. Additional reviews and revisions were made to the Commonwealth’s water quality standards during 1985, 1989 and 1994. The Department, which was created in June 1995 after splitting DER into two agencies by approval of the Conservation and Natural Resources Act (71 P. S.§§ 1340.101—1340.1103), began to conduct its first comprehensive review of water quality standards regulations, policies and implementation procedures which became the basis for the next triennial review. Additional reviews andrevisions were made to the Commonwealth’s water quality standards during 1998, 1999, 2000, 2002, 2004 and2009 to address amendments for the Great Lakes Initiative, antidegradation policies, the Water Quality Standard Regulatory Basics Initiative Triennial and several other corrective amendments.

This proposed rulemaking constitutes the Commonwealth’s current triennial review of its water quality standards.

On January 11, 2012, the Department’s Water Resources Advisory Committee (WRAC) voted to present this proposed rulemaking package to the Board. In addition, the Department provided to the Agricultural Advisory Board (AAB) on August 17, 2011, a regulatory agenda that included the triennial review of water quality standards. The AAB declined the need for consideration at the regularly scheduled October 19, 2011, meeting.

E. Summary of Issues and Proposed Regulatory Revisions

The following is a detailed description of proposed amendments to Chapter 93. 

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**PENNSYLVANIA BULLETIN, VOL. 42, NO. 27, JULY 7, 2012**