THE COMMONWEALTH OF MASSACHUSETTS 

William Francis Galvin 

Secretary of the Commonwealth 

Notice of Correction 

Regulation Filing To be completed by filing agency 

CHAPTER NUMBER: 310CMR 7.00 

CHAPTER TITLE: 'Ai r Pollutio n 

AGENCY: Department of Environmental Protection 

ORIGINAL PUBLICATION REFERENCE: Register Number: 1035 

SUMMARY OF CORRECTION: 

See attached 

Date:' 9/23/05 

AGENCY CONTACT: Donald Squires. 

ADDRESS: 8t h Floor One Winter Street Boston 

PHONE: 617-292-5618 

Publication - To be completed by the Regulations Division 

MASSACHUSETTS REGISTER NUMBER: 1037 

EFFECTIVE DATE: 9/23/05 

CODE OF MASSACHUSETTS REGULATIONS 

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See Next Page? fo r Filin g Instruction s 

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DATE :

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A TRUE COPY ATTEST 

WILLIAM FRANCIS GALVIN 

SECRETARY OF THE COMMONWEALTH 

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250.72.57 - 250.72.58 

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211-212 

221 -222 

250.7 - 250.8 

250.72.18.7-250.72.18.14 

250.72.57 - 250.72.58 

250.102.9-250102.10 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.02: continued 

23. Ownership. A change in facility ownership, provided that the Department is notified 

in writing of the ownership change within 60 days of the effective date of the change. 

24. Plan Approval bv Rule. An emission unit listed in 310 CMR 7.03 provided that the 

emission unit fully conforms to the design, operation, maintenance, and record keeping 

requirements of 310 CMR 7.03. 

25. Plumbing. Plumbing soil stacks or vents. 

26. Pressure Relief Devices. Safety pressure relief devices associated with emission 

units having plan approvals, unless otherwise required by the Department. 

27. Relocation of Approved Equipment. Relocation of any previously approved 

equipment provided that the equipment is relocated within the facility or to a contiguous 

property and provided that the relocated equipment does not cause or contribute to a 

condition of air pollution. 

28. Thermal and Catalytic Oxidizers. A process emission oxidizer or afterburner with 

a rated capacity of less than 40,000,000 Btu per hour vising natural gas and installed on 

a previously approved facility or on a new facility which otherwise meets the plan 

approval exemptions provided in 310 CMR 7.02(2)'. This exemption is only available 

where the air pollution control equipment is not otherwise required by regulation, and the 

air pollution control equipment does not replace existing air pollution control equipment 

required by plan approval or regulation. Flares are not eligible under this exemption. 

Persons installing thermal or catalytic oxidizers as allowed by this exemption shall notify 

the Department, within 60 days of installation, that oxidizers have been installed. 

29. Turbines and Reciprocating Engines. 

a. Prior to March 23, 2006, an individual internal combustion engine including a 

combustion turbine or reciprocating engine h aving an energy input capacity less than 

. 3,000,000 Btu per hour or an internal combustion engine regulated by EPA as a nonroad engine pursuant to 40 CFR 89, 90, 91, and 92. 

b. On and afterMarch 23,2006, an individual internal combustion engine including 

a combustion turbine or reciprocating engine installed and operated in compliance 

with 310 CMR 7.26(40) through (44), or an internal combustion engine regulated by 

EPA as a non-road engine pursuant to 40 CFR 89, 90, 91, and 92. 

30. Wastewater Treatment. Wastewater treatment and/or pumping facilities with 

average daily input flows of less than 50,000 gallons per day, and that treat sanitary 

sewage exclusively. 

31. Water Treatment. Water treatment systems for process cooling water or boiler feed 

water. 

32. RACT. Organic Material Storage and Distribution. ERP. or NOx Allowance 

Program. Contru'ction, substantial reconstruction or alteration required to comply with 

the requirements of 310 CMR 7.18, 7.19, 7.24, 7.26, 7.27 or 7.28. This exception does 

not apply to any boiler complying with the repowering provisions of 310 CMR 

7.19(4)(b), any printer complying with 310 CMR 7.26(23)(a)3., or any wood fuel-fired 

boiler. 

33. Actions that Contravene an Issued Plan Approval. Except as provided in 310 CMR 

7.02(2)(b)32.a. and b., the construction, substantial reconstruction, or alteration of a 

facility or emission unit that would contravene an issued plan approval does not require 

a new plan approval, provided that the planned construction, substantia] reconstruction, 

or alteration does not increase potential emissions by one ton per year or more above the 

emission limitation established by the issued plan approval. Persons constructing, 

substantially reconstructing or altering a facility or emission unit as allowed by this 

exemption shall notify the Department within 30 days of any such action. In order to 

determine applicability under 310 CMR 7.02(2)(b)32., emissions shall be calculated 

based on the increase in potential emissions (as defined in 310 CMR 7.00) of the planned 

action. Reductions in emissions resulting from reduced utilization or elimination of, 

emission units cannot be deducted. Products of combustion from any fuel utilization 

facility and emissions from an emission unit(s) installed in compliance with 310 CMR 

7.03 are not included when calculating an increase in potential emissions. 

a. Notwithstanding the provisions of 310 CMR 7.02(2)(b)32., the provisions of 

310 CMR 7.02(4) and 310 CMR 7.02(5) requiring a written plan approval shall apply 

to any construction, substantial reconstruction, or alteration of a facility or emission 

unit that would contravene those provisions of an issued plan approval that require: 

i. emission control equipment design specifications; or 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-205 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.02: continued 

i i. emission control equipment capture and/or destruction efficiency standards; 

or 

iii. emission limits (except emission limits per year or rolling 12 month 

average); or 

iv. air contaminant ventilation characteristics such as stack height; or 

v. limitations on the VOC/HOC content of coatings; or 

vi. recordkeeping, monitoring, testing or reporting requirements. 

b. Where the action would result in an increase in allowable or potential emissions 

above limits established in an approved RES, the RES must be modified as described 

in 310 CMR 7.02(10). 

(c) Exclusions from Exemptions. Notwithstanding the provisions of 310 CMR 7.02(2)(a), 

and 7.02(2)(b), the provisions 310 CMR 7.02(4) and 310 CMR 7.02(5) requiring a written 

plan approval shall apply to construction, substantial reconstruction or alteration of a facility 

or emission unit that: 

1. specifically included in 310 CMR 7.02(4)(a)3. or 4-; or 

2. is specifically included in 310 CMR 7.02(5)(a)5. through 11.; or 

3. would cause increases in aggregate emissions above thresholds defined by 310 CMR 

7.02(6); or 

4. would cause or contribute to a condition of air pollution under 310 CMR 7.02(7). 

(d) Record Keeping. The owner or operator of a facility or emission unit that is exempt 

from plan approval shall keep the following records on-site and up-to-date, such that year-todate information is readily available for Department examination upon request: 

1. Documentation of the date of construction, substantial reconstruction or alteration. 

2. Documentation, including emission calculations, under the specific condition(s) that 

qualifies the activity for exemption (e.g., size threshold, emissions). 

3. Air pollution control and other equipment performance specifications. 

4. Verification of the overall efficiency of any air pollution control device adequate to 

support assumptions of emission control equipment capture efficiency (documentation 

of permanent total enclosures) and destruction/removal efficiency. 

(e) Reporting. 

1. The owner or operator of a facility subject to the Source Registration reporting 

requirements of 310 CMR 7.12, shall report the construction, substantial reconstruction 

or alteration activities that qualified for exerhption in the next required Source 

Registration. Quantification of emissions from exempt activities is not required unless 

specifically requested. 

2. The owner or operator of a facility required to report under 310 CMR 7.02(2)(b)32. 

for contravening the provisions of a plan approval shall submit the report within 30 days 

of said action. 

(f) Enforcement. If construction, substantial reconstruction, alteration or operation of an 

emission unit for which an exemption from plan approval is claimed, violates any provisions 

of 310 CMR 7.00, the person owning, leasing, operating or controlling the facility will be 

subject to enforcement under M.G.L. c. Ill , §§ 142A and B, and c. 21A §, 16 and/or any 

other relief or remedy provided by law including, but not limited to, injunctive relief. 

(3) General Requirements for Plan Approval. 

(a) General. No. person shall construct, substantially reconstruct, alter, or subsequently 

operate any facility subject to the requirements of 310 CMR 7.02(4) or (5) unless an 

application for a plan approval has been submitted to the Department and plan approval has 

been granted by the Department. Procedures and contents of an application for plan approval 

can be found at 310 CMR 7.02(4) and 310 CMR 7.02(5). 

(b) Form of Approval. Any plan approval or plan disapproval will be issued by the 

Department in writing. If a plan application is disapproved, the Department will provide a 

written explanation of the circumstances that led to the decision to disapprove the 

application. 

(c) Conditions of Approval. The Department may impose any reasonable conditions in a 

plan approval including conditions determined to be necessary to insure that the facility will 

be built, operated, and maintained as specified in the application for plan approval. 

10/21 /05 (Effective 9/23/05) - corrected 310 CMR-206 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.02: continued 

(d) Monitoring and Testing. The Department may require the applicant to monitor and/or 

test emissions as a condition of approval. The plan approval may include conditions that 

direct the applicant to install sampling ports of a specified size, number or location, direct 

the applicant to provide safe access to each sampling port or direct the applicant to install 

instrumentation to monitor and record emissions data and/or operating parameters. 

(e) Record Keeping and Reporting. The Department may require an applicant to maintain 

records and provide periodic reports to the Department, as necessary, to assure continuous 

compliance with standard operating procedures, standard maintenance procedures, emission 

limitations, and any work practices contained in the plan approval. 

10/21/05 (Effective 9/23/05) - corrected 310 CMR - 206.1 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

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10/21/05 (Effective 9/23/05) - corrected 310 CMR-206.2 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.02: continued 

8. Modification of Plan Approval Conditions. Any facility, regardless of any exemption 

established elsewhere in 310 CMR 7.00, that requires a modification to a condition of 

any plan approval issued by the Department due to an increase in potential emissions by 

equal to or greater than five tons per year (as calculated in any consecutive 12 month time 

period) over the emission limitation established by plan approval. The increase in 

potential emissions shall be calculated in accordance with 310 CMR 7.02(5)(b). 

9. Modification of Non-attainment Review Plan Approval or Case-bv-case MACT. Any 

facility, where the construction, substantial reconstruction or alteration would violate a 

condition of a Non-attainment Review approval or Case-by-case MACT (40 CFR Part 

63.40 through 40 CFR Part 63.44) regardless of the expected change in emissions and 

any exemptions established elsewhere in 310 CMR 7.00. 

10. Facilities with the Potential to Cause or Contribute to Air Pollution. Any facility, 

regardless of any exemption established elsewhere in 310 CMR 7.00 that the Department 

determines has the potential for causing or contributing to a condition of air pollution. 

11. Major Modifications at Large Combustion Emission Units fLCEU). A 

Comprehensive Plan Application is required for major modifications for any large • 

combustion emission unit. The applicability criteria for a CPA and associated definitions 

for LCEU(s).are set forth in 310 CMR 7.54. 

(b) Calculation of Emissions. Calculation of potential emissions associated with a CPA 

must be based on the potential emissions (as defined in 310 CMR 7.00) of the proposed 

construction, substantial reconstruction or alteration. Limitations proposed on the potential 

emissions in the application must be made enforceable, as a practical matter, to be federally 

enforceable (see definition of federal potential to emit). Reductions in emissions resulting 

from reduced utilization or elimination of emission units cannot be deducted (i.e. no netting). 

Products of combustion are not included when calculating applicability under 310 CMR 

7.02(5)(a)l. Emissions from an emission unit(s) installed in accordance with 310 CMR 7.03 

or CMR 7.26 are not included when calculating an increase in potential emissions for 

purposes of determining applicability under 310 CMR 7.02(5)(a)l., 2. and 3. 

(c) Comprehensive Plan Application Requirements. To apply for a CPA, an applicant shall 

satisfy each of the following conditions: 

1. 'The application shall be made on a form furnished by the Department or by other 

means required by the Department. 

2. The application shall be signed by a responsible official. 

3. The application shall be submitted in duplicate. 

4. The application shall be accompanied by a description of the proposed activity, site 

information, plans, specifications, drawings illustrating the design of the facility, 

calculations detailing the nature and amount of all emissions, and procedures describing 

the manner in which the facility will operate and be maintained. 

5. The application shall demonstrate compliance with the requirements of 310 CMR 

7.02(8)(a) relating to compliance with emission limitations. 

6. Additional information shall be furnished upon request by the Department including, 

but not limited to, air dispersion modeling, additional plans or specifications, and 

documentation or evidence to support the application. 

7. The application shall bear the seal and signature of a professional engineer registered 

in the Commonwealth of Massachusetts under the provisions of M.G.L. c. 112. 

8. The application shall contain an affirmative demonstration that any facility(ies) in 

Massachusetts owned or operated by such persons (or by an entity controlling, controlled 

by or under common control with such person) that is subject to 310 CMR 7.00 et seq., 

is in compliance with or on a Department approved compliance schedule to meet all 

provisions of 310 CMR 7.00 et seq. and any plan approval, notice of noncompliance 

order or plan approval issued thereunder. 

(d) Prevention of SignificantDeterioration. In addition to the requirements contained at 310 

CMR 7.02(5)(c), major new stationary sources of air contaminants and major modifications 

of existing major stationary sources located in attainment areas are subject to Prevention of . 

Significant Deterioration (PSD) regulations promulgated in 40 CFR Part 52.21. Effective 

July 1, 1982, the PSD program was implemented by the Department in accordance with the 

Department's "Procedures for Implementing Federal Prevention of Significant Deterioration 

Regulations." Effective March 3, 2003, the PSD program is implemented by the U.S. 

Environmental Protection Agency. 

9/23/05 310 CMR-211 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.02: continued 

(e) Case-bv-case Maximum Achievable Control Technology. In addition to the 

requirements contained at 310 CMR 7.02(5)(c), the construction or reconstruction of major 

sources of hazardous air pollutants (as defined by 40 CFR Part 63.41) is subject to 40 CFR 

Part 63.40 through .44. This is a requirement to satisfy The Clean Air Act, § 112(g) that 

construction or reconstruction after June 29, 1998 of a major source of hazardous air 

pollutants (as defined in 40 CFR Part 63.2) be equipped with MACT. These requirements 

apply only if the source has not been either regulated or exempted by a standard issued 

pursuant to The Clean Air Act, § 112(d), 112(h), or 112(j) or the process category has been 

delisted pursuant to The Clean Air Act, § 112(c)(9). 40 CFR Part 63.40 through .44 is 

implemented by the Department as of August 3, 2001. 

(f) Facilities with Operating Permits. An owner or operator of a facility issued an operating 

permit under the provisions of 310 CMR 7.00: Appendix C, with proposed changes at the 

facility that are not a modification under any provision of Title I of the Clean Air Act,.(42 

U.S.C. 7401 through 7515) may elect a shorter plan review timeline available under 310 

CMR 4.10(2)(j)(l) provided that a pre-application meeting is held with the appropriate 

regional office personnel no more than 90 days prior to the anticipated date that the .CPA is 

to be submitted and an application for a minor modification of the operating permit is 

submitted to the Department in accordance with the requirements of 310 CMR 

7.00: Appendix C(8) and timelines established at 310 CMR 7.00: Appendix C(4)(b)2. 

(6) Aggregated Emissions. 

(a) Applicability. 

1. Any person who owns or operates a facility shall track emission increases- as defined 

below on a calendar year basis in order to determine if plan approval is required pursuant 

to310CMR7.02(5)(a)6. 

• 2. Emission increases that are subject to this requirement are those associated with the 

construction, substantial reconstruction or alteration of a facility or emission units that: 

a. Are individually not subject to plan approval under 310 CMR 7.02(4) or 310 

CMR 7.02(5); and 

b. Have not previously been aggregated for purposes of plan approval under 310 

CMR 7.02(4) and 310 CMR 7.02(5); and 

c. Are not part of a program of construction or modification in planned incremental 

phases previously approved by the Department. 

(b) Calculation of Emissions. Aggregated emissions shall be calculated as the sum of the 

potential emissions of any air contaminant identified in 310 CMR 7.02(6)(a). Products of 

combustion from any fuel utilization facility or emissions resulting from construction, 

substantial reconstruction or alteration, in accordance with the requirements of 310 CMR 

7.03 or 7.26, are not included in this calculation. 

(7) Mitigation of Air Pollution. 

(a) Requirement to Collect Information. When me Department determines that any facility 

or product manufactured therein has the likelihood of causing or contributing to a condition 

of air pollution, the Department may require the person owning, leasing or controlling said 

facility to submit information to document facility emissions, operating parameters of 

emission control equipment, and standard operating and maintenance procedures. In doing 

so, the Department may require any person who owns, operates or controls any facility, or 

who manufactures emissions control equipment or process equipment to: 

1. Establish and maintain records; 

2. Make reports; 

3. Install, use, and maintain monitoring equipment; 

4. Perform audits on monitoring equipment using standard procedures and methods; 

5. Quantify emissions in accordance with the procedures, and methods as the Department may prescribe; 

6. Keep records on control equipment parameters, production variables, and other 

indirect data when-direct monitoring of emissions is not practical; 

7. Conduct stack testing or submit modeling analysis; or 

8. Maintain other records and provide any other information as the Department might 

reasonably require. 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-212 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.02: continued 

5. Not Otherwise Classified Process. 

a. Information on the process and equipment including the following: equipment 

type, description, make and model, maximum design process rate or throughput, 

control device(s) type and description (if any); 

b. Any additional information requested in writing by the Department; 

c. A monthly log of operating hours, each raw material used and its amount; and 

d. Purchase orders, invoices, and other documents to support information in the 

monthly log. 

(i) Reporting. In order to document compliance and maintain an emissions inventory, 

the Department may require reporting from any owner or operator of a facility with an 

emissions cap established at 310 CMR 7.02(1 l)(e) or (f). 

7.03: U Plan Approval Exemption: Construction Requirements 

(1) General. 

(a) Any person who constructs, substantially reconstructs or alters, and subsequently 

operates an emission unit listed herein, may comply with the specific requirements of 310 

CMR 7.03)(5) through (7) in lieu of filing either a Comprehensive Plan Application (CPA) 

required by 310 CMR 7.02(5)(a) or a Limited Plan Application (LPA) required by 310 CMR 

7.02(4)(a), except as provided in 310 CMR 7.03(2). 

(b) Under 310 CMR 7.03, VOC shall include Volatile Organic Compounds (VOC) and 

Halogenated Organic Compounds (HOC) as defined in 310 CMR 7.00. 

(c) Nothing in 310 CMR 7.03 relieves a person who owns, operates, leases or controls a 

facility from having to comply with other applicable requirements of 310 CMR 7.00. 

(d) 1. Any person who constructs, substantially reconstructs, or alters and subsequently 

operates an emission unit in accordance with 31QCMR 7.03(8), (15), (16) or (19) shall . 

limit the facility-wide emission of any individual hazardous air pollutant (HAP) to less 

than 10 tons in each consecutive 12 month time period, and all combined HAPs to less 

than 25 tons in each consecutive 12 month time period. 

2. The limits specified in 310 CMR 7.03(l)(d)l. do not apply to an owner or operator 

subject to 310 CMR 7.00 Appendix C: Operating Permit and Compliance Program. 

(2) Prohibition. 310 CMR 7.03 is not an alternative to obtaining a plan approval pursuant to 

310 CMR 7.02 if construction, substantial reconstruction or alteration would violate 

requirements of: 

(a) 310 CMR 7.02(5)(a)7. relating to Prevention of Significant Deterioration (PSD) 

requirements or the need for Non-attainment Review; 

. (b) 310 CMR 7.02(5)(a)8-. and 9. relating to plan approvals, Nonattainment Review 

approval or PSD permits, or MACT requirements at 40 CFR 63.40 through .44 

(c) 310 CMR 7.02(5)(a)10. relating to Department determinations of a potential condition 

of air pollution; 

(d) 3 IP CMR 7.02(5)(a)5. relating to any incinerator; 

(e) 310 CMR 7.02(4)(a)3. relating to plan approvals; or 

(f) 310 CMR 7.02(4)(a)4. relating to significant increase in federal potential emissions. 

(3) Including Emission Units in Calculation of Net Emission Increase. Persons who construct, 

substantially reconstruct or alter an emission unit that complies with the requirements of 310 

CMR 7.03 must include said emission unit in calculating significant net emission increase and 

determining applicability of Non-attainment New Source Review, 310 CMR 7.00: Appendix A, 

PSD (40 CFR 52.21) or Case-by-case MACT (310 CMR 7.02(5)(e)). 

(4) Emission Units Constructed or Altered Since 1970. 

(a) Persons who construct, substantially reconstruct, alter, or subsequently operate an 

emission unit after July 1,1970 in the Metropolitan Boston Air Pollution Control District and 

after September 15,1970 in all other districts are not required to obtain plan approval if said 

• emission unit complies with the requirements of 310 CMR 7.03(5) through (7), et seq. and 

is not prohibited by 310 CMR 7.03(2). 

(b) Persons who already have plan approval for emission units that might otherwise be 

subject to 310 CMR 7.03 must continue to comply with the terms and conditions of the plan 

approval and are not subject to the requirements of 310 CMR 7.03. 

9/23/05 310 CMR-221 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.03: continued 

(5) Reporting. Any construction, substantial reconstruction or alteration, as-described in 310 

CMR 7.03, at a facility subject to the reporting requirements of 310 CMR 7.12, shall be reported 

to the Department on the next required source registration. 

(6) Record-keeping. A record-keeping system shall be established and continued in sufficient 

detail to document the date of construction, substantial reconstruction or alteration and that the 

respective emission rates, operational limitations, equipment specifications and other 

requirements pursuant to 310 CMR 7.03 are met. All records shall be maintained up-to-date 

such that year-to-date information is readily available for Department examination. 

(7) Operation. No person shall operate a facility constructed, substantially reconstructed or 

altered pursuant to 310 CMR 7.03 except in conformance with the requirements established • 

herein. This exemption from the requirements of 310 CMR 7.02(4) and (5) shall not affect-the 

responsibility of the owner or operator to comply with other provisions of 310 CMR 7.00, other 

applicable regulations or any plan approval, notice of noncompliance order, PSD permit or other 

approval issued to said facility. 

(8) Degreaser. Construction, substantial reconstruction or alteration of any degreaser in 

compliance with the criteria established in 310 CMR 7.18(8), regardless of the item being 

degreased, with a solvent consumption rate of less than 100 gallons per month. Consumption 

rate is the amount of solvent added into the unit less any dbcumented solvent waste disposal or 

recycling amounts, each in gallons per month. 

(9) Wave Solder. Construction, substantial reconstruction or alteration of an oil-less wave 

solder operation or any wave solder operation with a flux consumption rate, including any 

thinner, of less than 200 gallons per month, either equipped with an electrostatic precipitator 

capable of maintaining a particulate control efficiency of greater than 90% or emitting visible 

emissions with 0% opacity. 

(10) Emergency or Standby Engine. 

(a) On or after June 1, 1990, but prior to March 23, 2006, construction, substantial 

reconstruction or alteration of any emergency or standby engine shall comply with 310 CMR 

7.03(10)(a) through (c). All such emergency or standby engines shall: 

1. Have an energy input capacity of equal to or greater than 3,000,000 Btu per hour and 

less than or equal to 10,000,000 Btu per hour; and 

2. Be equipped with an exhaust gas silencer so that sound emissions from the generator 

will not cause or contribute to a condition of air pollution; and 

3. Utilize an exhaust stack that discharges so as to not cause or contribute to a condition 

of air pollution, and 

4. Not operate more than a total of 300 hours per rolling 12 month period, and only 

during: 

a. The normal maintenance and testing procedure as recommended by the 

manufacturer; and 

b. Periods of electric power outage due to failure of the grid, in whole or in part, 

on-site disaster, local equipment failure, flood, fire or natural disaster; and 

c. When the imminent threat of a power outage is likely due to failure of the 

electrical supply or when capacity deficiencies result in a deviation of voltage from 

the electrical supplier to the premises of 3% above or 5% below standard voltage, or 

periods during which the regional transmission organization directs the 

implementation of voltage reductions, voluntary load curtailments by customers, or 

automatic or manual load shedding within Massachusetts in response to unusually 

low frequency, equipment overload, capacity or energy deficiency, unacceptable 

voltage levels, or other emergency conditions. 

(b) On and after July 1,2007, no person shall accept for delivery for burning in any engine 

subject to 310 CMR 7.03(10), diesel or any other fuel that does not meet the applicable U.S. 

Environmental Protection Agency sulfur limits for fuel pursuant to 40 CFR' 80.29, 40 CFR 

80.500, and 40 CFR 80.520(a) and (b) as in effect January 18, 2001. 

(c) Reporting and record keeping requirements for 310 CMR 7.03(10), as required by 310 

CMR 7.03(5) and (6), shall be in accordance with 310 CMR 7.02(8)(i)3. through 4. 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-222 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.18: continued 

3. the person identifies the coatings which will be covered by this exemption; and, 

4. the person complies with the recordkeeping and testing requirements of the particular 

section. 

(g) Daily Weighted Averaging. Any person who owns, leases, operates or controls a 

coating line subject to 310 CMR 7.18, with the exception of coating lines subject to 

310 CMR 7.18(24): Flat Wood Paneling Surface Coating, or 310 CMR 7.18(28): 

Automotive Reftnishing, may comply with the VOC emission limitations of the applicable 

section of 310 CMR 7.18 through the use of a daily-weighted average on an individual 

coating line, provided the person meets the following conditions: 

1. the daily-weighted average for each coating line, each day, complies with the 

applicable emission limitation in 310 CMR 7.18 with no cross-line averaging allowed; 

and, 

2. the coating line using a daily-weighted average to determine compliance does not use 

any emissions capture and control equipment for the compliance determination; and, 

3. prior to being used, the exact method of measuring and determining compliance on 

a daily-weighted average basis is approved by the Department in an emissions control 

' plan submitted under 310 CMR 7.18(20); and, 

4. records kept to determine compliance on a daily-weighted average basis are kept at 

the facility for a period of five years, and made available to the Department or EPA on 

. request; and, 

5. the daily-weighted average for each coating line, with the exception of coating lines 

subject to 310 CMR 7.18(26): Textile Finishing, is calculated according to the following 

equation: 

n 

E vjc, 

vocw = i-^ i 

where: 

VOC w = the daily-weighted average VOC content of the coatings used each day on each 

coating line in units of pounds of VOC per gallon of solids as applied; 

n = the number of different coatings applied, each day on a coating line; 

Vj = the volume of solids as applied for each coating, each day, on each coating line, in 

units of gallons of solids as applied; 

Q = the VOC content for each coating, each day, on each coating line in units of pounds 

of VOC per gallons of solids as applied; and 

V T = the total volume of solids as applied, each day on each coating line. 

6. For coating lines subject to 310 CMR 7.18(26): Textile Finishing, the daily weighted 

average for each coating line is calculated according to the following equation: 

VOCu 

i - 1 

where: Mr 

VOC ^ = the daily-weighted average VOC content of the coatings used each day' on each 

coating line in units of pounds of VOC per pound of solids, as applied; 

n = the number of different coatings applied each day on a coating line; 

M, = the mass of solids as applied for each coating, each day, on each coating line, in units 

of pounds of solids as applied; 

Cj = the VOC content of the coatings used, each day, on each coating line in units of 

pounds of VOC per pounds of solids, as applied; 

M T = the total mass of solids as applied, each day on each coating line. 

Coating usage may be averaged, providing the units in the equation are the same as the 

units that are used in the section of 310 CMR 7.18 that applies to the coatings included 

in the daily average. Only coatings subject to the same emissions standard may be 

averaged together. 

10/21/05 (Effective 9/23/05) - corrected 320 CMR-250.7 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.18: continued 

(h) Emission Reduction Credits (ERCs). Any facility may comply, either in part or entirely, 

with the applicable emission standard contained in 310 CMR 7.18 through the use of 

emission reduction credits (ERCs) certified by the Department pursuant to 310 CMR 7.00: 

AppendixB(3), provided that the requirements of 310 CMR 7.00: Appendix B(3)(e) are met 

prior to use of said ERCs. 

(3) U Metal Furniture Surface Coating. 

(a) On or after January 1, 1980, no person who owns, leases, operates, or controls a metal 

furniture coating line, which emits, before any application of air pollution control equipment, 

in excess of 15 pounds per day of volatile organic compounds (VOC), shall cause, suffer, 

allow or permit emissions therefrom in excess of 5.1 pounds of VOC per gallon of solids 

applied. 

(b) Any person subject to 310 CMR 7.18(3)(a) shall maintain continuous compliance at all 

times. Compliance averaging times will be met in accordance with the requirements of 310 

CMR 7.18(2)(a). -Demonstrations of compliance shall not include any considerations of 

transfer efficiency. 

(c) Any person subject to 310 CMR 7.18(3)(a) shall prepare and maintain daily records 

sufficient to demonstrate compliance consistent with the applicable averaging time as stated 

in 310' CMR 7.18(2)(a). Records kept to demonstrate compliance shall be kept on site for 

three years and shall be made available to representatives of the Department and EPA in 

accordance with the requirements of an approved compliance plan or upon request. Such 

records shall include, but are not limited to: 

1. identity, quantity, formulation and density of coating(s) used; 

2. identity, quantity, formulation and density of any diluent(s) and clean-up solvent(s) 

used; 

3. solids content of any coating(s) used; 

4. actual operational and emissions characteristics of the coating- line and any 

appurtenant emissions capture and control equipment; 

5. quantity of product processed; 

6. any other requirements specified by the Department in any approval(s) and/or order(s) 

issued to the person. 

(d) Persons subject to 310 CMR 7.18(3)(a) shall, upon request of the Department, perform 

or have performed tests to demonstrate compliance. Testing shall be conducted in 

accordance with EPA Method 24 and/or Method 25 as described in CFR Title 40 Part 60, or 

by other methods approved by the Department and EPA. 

(4) U Metal Can Surface Coating. 

(a) On or after January 1, 1980, no person who owns, leases, operates, or controls a metal 

can coating line, which emits, before any application of air pollution control equipment, in 

excess of 15 pounds per day of volatile organic compounds (VOC), shall cause, suffer, allow 

or permit emissions therefrom in excess of the emission limitations set forth in 310 CMR 

7.18(4)(b). 

(b) Emission Limitations Metal Can Surface Coating. 

Emission Source Emission Limitation in pounds 

of volatile organic compounds 

per gallon of solids applied 

Sheet base coat (exterior and 4.5 

interior and exterior overvarnish) 

Two-piece can exterior (basecoat and overvarnish) 4.5 

Two and Three-piece can (interior body spray) 9.8 

Two-piece can exterior end (spray or roll coat) 9.8 

Three-piece can side seam spray 21.8 

End sealing compound 7.4 

9/23/05 310 CMR-250.8 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.26: continued 

(31) Definitions. Terms used in 310 CMR 7.26(30) through (37) are defined in 310 CMR 7.00 

or in 310 CMR 7.26(31). Where a term is defined in both 310 CMR 7.00 and in 310 CMR 

7.26(31), the definition in 310 CMR 7.26(31) is applicable. 

ADJACENT STRUCTURE means a structure that is within 5L of the stack. 5L means five 

times the lesser dimension (height or maximum projected width) of the structure. 

AUTOMATED COMBUSTION CONTROL SYSTEM means a system that self adjusts 

burner/boiler operation to maximize energy efficiency. It must include at least the following 

capabilities: fuel/air ratio adjusted automatically, fuel flow metered/monitored, and continuous 

monitoring of nitrogen oxides (NOx) and carbon monoxide. 

BOILER means a device that combusts any fuel and produces steam or heats water. 

DISTILLATE FUEL OIL for the purposes of 310 CMR 7.26(30) means fuel oil that complies 

with the specifications for fuel oil numbers 1 or 2 as defined by the American Society for Testing 

and Materials in ASTM D396-98, "Standard Specification for Fuel Oil" dated September 1998 

and has a sulfur content not to exceed 0.05% by weight. 

INSTALL or INSTALLATION as used in 310 CMR 7.26(30) means to set an emission unit in 

position for use. A relocation of a previously approved boiler, provided that it is relocated within 

the facility or to a contiguous property, owned and operated by the same owner is not an 

installation. 

(32) Certification. 

(a) An owner or operator of a boiler subject to 310 CMR 7.26(30) shall certify, in 

compliance with 310 CMR 70.00 that the boiler is in compliance with 310 CMR 7.26(30) 

through (37). 

(b) An owner or operator of a boiler subject to 310 CMR 7.26(30) shall submit to the 

Department an initial compliance certification form within 60 days of the date on which the 

boiler commences operation, and, thereafter, an annual certification form by March 15Ih of 

each year. 

(33) Fuel of Use/Emission Limitations. 

(a) Fuel of Use. 

1. Only natural gas and distillate fuel oil may be used, as specified in 310 CMR 7.00. 

2. NATURAL GAS. 

a. All boilers subject to 310 CMR 7.26(30) shall burn natural gas as the primary fuel 

of use where the boiler is located on a property adjacent to a street or sidewalk 

underlain by a natural gas pipeline having sufficient pressure and capacity to supply 

natural gas to the boiler. 

b. Distillate fuel oil may be bumed for a maximum of 90 days per calendar year. 

3. DISTILLATE FUEL OIL. All boilers subject to 310 CMR 7.26(30) may bum 

distillate fuel oil as the primary fuel of use when conditions for natural gas use, as 

specified in 310 CMR 7.26(33)(a)2., cannot reasonably be met, as determined by the 

Department in accordance with 310 CMR 7.00: Air Pollution Control. 

(b) Emission Limitations. Each boiler shall comply with the following emission limitations 

in pounds per million Btu heat input for the fuel of use. 

POLLUTANT Fuel of Use Emission limitation 

(lbs. per million Btu) 

Nitrogen Oxides Natural Gas 

Distillate Fuel Oil 

Particulate Matter Natural Gas 

Distillate Fuel Oil 

Carbon Monoxide Natural Gas 

Distillate Fuel Oil 

Volatile Organic Compounds Natural Gas 

Distillate Fuel Oil 

0.0350 

0.150 

0.010 

0.020 

0.080 

0.080 

0.030 

0.030 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-250.72.18.7 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.26: continued 

(c) The sulfur dioxide emissions are limited by the sulfur content of the distillate fuel oil. 

The sulfur content of the distillate fuel oil is limited to 0.05% by weight. 

(d) The carbon monoxide emission limitation specified in 310 CMR 7.26(33)(b) does not 

apply to high turndown boilers while operating at less than 25% of the maximum input 

rating. 

(e) Visible Emissions (excluding water vapor) may not exceed. 10% opacity at any time 

during boiler operation. 

(34) Operational Requirements. 

(a) The boiler and appurtenances shall be operated in accordance with the manufacturer's 

standard operating and maintenance procedures. 

(b) A boiler tune-up shall be performed annually for boilers that primarily bum natural gas, 

and twice a year for boilers that bum'red dye distillate fuel oil as the primary fuel. A tune-up 

is not required if the boiler is equipped with a continuous automated combustion 

management and control technology system. • 

A boiler tune-up shall include an inspection for proper operation, any other maintenance 

recommended by the manufacturer, and an efficiency test. An efficiency test shall include 

at least a smoke spot reading, flue gas temperature measurement and a measure of carbon 

dioxide, oxygen, and carbon monoxide. A written record of the efficiency test and any 

maintenance performed shall be kept on site in accordance with the record keeping 

provisions contained 310 CMR 7.26(36). 

(c) Fuel additives shall only be used in accordance with the manufacturer's instructions. 

(35) Stack Requirements. 

(a) Minimum stack height shall be 1.5 times the height of the building on which the stack 

is located. If the stack height is (1) lower than 1.5 times the building height or (2) lower than 

the height of an adjacent structure, an EPA Guideline air quality model shall be run to 

document that the operation of the applicable boiler(s) will not cause National Ambient Air 

Quality Standards exceedances. The air quality model documentation must be retained on 

site for as long as the boiler is operational. 

(b) Stacks shall not be equipped with rain protection of a type that restricts the vertical 

exhaust flow of the combustion gases as they are emitted to the ambient air. "Shanty caps", 

"egg beaters" and the like are prohibited. 

(c) The stack shall be configured to discharge the combustion gases vertically upwards. 

(36) Recordkeeping. 

(a) A recordkeeping system shall be established and implemented onsite and shall provide 

sufficient detail to document compliance. 

(b) Recordkeeping shall include the following: 

1. dates of boiler installation and first operation; 

2. a monthly record of fuel type, fuel additives, fuel usage in gallons or cubic feet, and 

sulfur content, as certified by the fuel supplier; 

3. a written record of all tune-ups, including inspections, maintenance, and results of the 

efficiency tests, and; 

4. all purchase orders and invoices related to boiler combustion or emission rate. 

(c) Documentation shall be maintained onsite that the boiler and its appurtenances, as 

designed and installed, will comply with the emission limitations when operated in 

accordance with the manufacturer's instructions. This documentation, including the 

manufacturer's operating instructions, shall be retained for as long as the bbiler operates. 

(d) All records shall be maintained up-to-date such that year-to-date information is readily 

available for Department ex amination. Records shall be kept for at least three calendar years. 

(37) Prohibitions. 

(a) Concealing of emissions is prohibited. 

(b) Removal of air pollution control or monitoring equipment is prohibited. 

(c) Natural draft.rotary cup burners are prohibited. 

9/23/05 310 CMR-250.72.18.8 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.26:, continued 

(40) Engines and Combustion Turbines - Applicability. 

(a) 310 CMR 7.26(40) through (44) in its entirety shall apply to any person who owns or 

operates engines and combustion turbines installed on and after March 23,2006 and are not 

subject to Prevention of Significant Deterioration (40 CFR 52.21) or Non-attainment Review 

at 310 CMR 7.00: Appendix A. 

(b) Owners and operators of engines regulated under 40 CFR 89, 90,91, and 92 are exempt 

from the requirements of 310 CMR 7.26(40) through (44) in its entirety. 

(41) Definitions. Termsusedin310CMR7.26(40)through(44)aredefinedin310CMR7.00 

and 310 CMR7.26(41). When-a term is defined in both 310 CMR 7.00 and 310 CMR 7.26(41), 

the definition in 310 CMR 7.26(41) shall govern. 

Emergency means an electric power outage due to failure of the grid, in whole or in part, on-site 

disaster, local equipment failure, flood, fire, or natural disaster. Emergency shall also mean 

when the imminent threat of a power outage is likely due to failure of the electrical supply or 

when capacity deficiencies result in a deviation of voltage from the electrical supplier to the 

premises of 3% above or 5% below standard voltage, or periods during which the regional 

transmission organization directs the implementation of voltage reductions, voluntary load 

curtailments by customers, or automatic or manual load shedding within Massachusetts in 

response to unusually low frequency, equipment overload, capacity or energy deficiency, 

unacceptable voltage levels, or other such emergency conditions. 

Engines mean spark ignition and compression ignition stationary reciprocating internal 

combustion engines. 

Rated Power Output means the maximum electrical or equivalent mechanical power output 

stated on the nameplate affixed to the engine or turbine by the manufacturer. 

Supplier means a person that manufactures, assembles, or otherwise supplies engines or turbines. 

Turbine means a stationary combustion turbine. 

(42) Emergency Engines and Turbines. 

(a) Applicability. 310 CMR 7.26(42) shall apply to any person who owns or operates an 

emergency or standby engine with a rated power output equal to or greater than 37kW and 

emergency turbines with a rated power output less than one MW that are constructed, 

substantially reconstructed or altered after March 23,2006. Owners and operators of peaking 

power units, load shaving units or units in an energy assistance program are subject to the 

. requirements of 310 CMR 7.26(43). 

1. Owners and operators of emergency turbines with a rated power output equal to or 

greater than one MW shall comply with the provisions of 310 CMR 7.02(5). 

2. Owners and operators of emergency engines and turbines that are subject to 310 

CMR 7.02(8)(i) or 310 CMR 7.03(10) shall continue to be subject to such requirements. 

3. Owners and operators of emergency engines and turbines subject to 310 CMR 

7.26(42) are not subject to the requirements of 310 CMR 7.02(5). 

4. Owners and operators of emergency or standby engines and turbines used as 

mechanical power sources for water pumping activities such as, but not limited to, 

firefighting, flood control, waste water flow, are subject 310 CMR 7.26(42) in its 

entirety. 

5. Owners and operators of emergency engines or turbines approved prior to 

September 23, 2005 under the requirements of 310 CMR 7.02(5) may operate during an 

emergency as defined in 310 CMR 7.26(41). 

(b) Emission Limitations. Owners and operators of emergency engines and turbines must 

comply with the emission limitations set forth in 310 CMR 7.26(42). 

1. Engines with a rated power output equal to or greater than 37 kW must comply with 

the applicable emission limitations set by the US EPA for non-road engines (40 CFR 89 

as in effect October 23, 1998) at the time of installation. The owner or operator of an 

engine subject to the requirements of 310 CMR 7.26(42)(b)l. shall obtain from the 

supplier a statement that a certificate of conformity has been obtained.from the 

Administrator pursuant to 40 CFR 89.105 as in effect October 23, 1998. Any engine 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-250.72.18.9 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.26: continued 

certified under the US EPA non-road standards is automatically certified to operate as 

an emergency engine pursuant to 310 CMR 7.26(42). For units that bum natural gas 

exclusively, a letter or other documentation from the supplier stating that the engine 

meets the applicable non-road emission limitation will satisfy the certificate of 

conformity requirement. 

2. All emergency turbines with a rated power output less than one MW shall comply 

with the emission limitations contained in 310 CMR 7.26(42): Table 1. 

Table 1. 

Emission Limitations - Emergency Turbines 

Rated Power Output Oxides of Nitrogen 

<1M W ' 0.60 pounds/MW - hr 

(c) Fuel Requirements'. On and after July 1, 2007, no person shall accept delivery for 

burning in any engine or turbine subject to'310 CMR 7.26(42) diesel or any other fuel that 

does not meet the applicable U.S. Environmental Protection Agency sulfur limits for fuel 

pursuant to 40 CFR 80.29, 40 CFR 80.500, and 40 CFR 80.520(a) and (b) as in effect 

January 18, 2001. 

(d) Operational Requirements. Any person who owns or operates an emergency or standby 

engine or emergency turbine subject to 310 CMR 7.26(42) shall comply with the following 

requirements: 

1. Hours of Operation. The engine and turbine shall not be operated more than .300 

hours during any rolling 12-month period. This operating restriction includes normal 

maintenance and testing procedures as recommended by the manufacturer. A nonturnback hour counter shall be installed, operated and maintained in good working order • 

on each unit. 

2. Operation and Maintenance. The engine(s) or turbine(s) shall be operated and 

maintained in accordance with the manufacturer's recommended operating and 

maintenance procedures. 

. 3. Sound. Engines, turbines and associated equipment shall be constructed, located, 

operated and maintained in a manner to comply with the requirements of 310 CMR 

7.10: Noise. 

4. Stack Height and Emission Dispersion. 

a. All engines or turbines shall utilize an exhaust stack that discharges so as to not 

cause a condition of air pollution (310 CMR 7.01(1)). Exhaust stacks shall be 

configured to discharge the combustion gases vertically and shall not be equipped 

with any part or device that restricts the vertical exhaust flow of the emitted 

combustion gases, including but not limited to rain protection devices "shanty caps" 

and "egg beaters". Any emission impacts of exhaust stacks upon sensitive receptors 

including, but not limited to, people, windows and doors that open, and building 

fresh air intakes shall be minimized by employing good air pollution control 

engineering practices. Such practices include without limitation: 

i . Avoiding locations that may be subject to downwash of the exhaust; and 

i i. installing stack(s) of sufficient height in locations that will prevent and 

minimize flue gas impacts upon sensitive receptors. 

b. Engines or turbines with a rated power output equal to or greater than 300 kw, but 

less than 1 MW, shall have a minimum stack height of ten feet above the facility 

rooftop or the emergency engine or turbine enclosure, whichever is lower. 

c. Engines with a rated power output equal to or greater than one MW shall be 

equipped with a stack with a minimum stack height of 1.5 times the height of the 

building on which the stack is located. If the stack is lower than 1.5 times the 

• building height or lower than the height of a structure that is within 5L of the stack 

(5L being five times the lesser of the height or maximum projected width of the 

structure), an EPA Guideline air quality model shall be run to document that the 

operation of the applicable emergency engine or turbine will not cause an exceedance 

of any National Ambient Air Quality Standard. 

5. Visible Emissions. Emergency engines and turbines shall comply with all the 

requirements of 310 CMR 7.06(l)(a) and (b). 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-250.72.18.10 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.26: continued 

(e) Emission Certification. Monitoring and Testing. 

1. Certification. No person shall cause, suffer, allow, or permit the installation and 

subsequent operation of an engine or turbine unless said person has certified compliance 

with the requirements of 310 CMR 7.26(42) in its entirety in accordance with the 

provisions of 310 CMR 70.00: Environmental Results Program Certification. 

Certification shall include a statement from the supplier that the installed engine or 

turbine is capable of complying with the emission limitations for the first three years of 

operation. A one time certification shall be made to the Department within 60 days of 

commencement of operation; annual certification is not required. 

2. Monitoring. The Department may require' emission or other monitoring to assure 

compliance with the requirements of 310 CMR 7.26(42). 

3. Testing. Any testing when required shall comply with the following: 

a. Tests to certify compliance with emission limitations must be performed in 

accordance with EPA reference Methods, California Air Resource's Board Methods 

approved by EPA, or equivalent methods as approved by the Department and EPA. 

b. Particulate matter from liquid fuel reciprocating engines shall be determined 

using Method 8178 D2 of the International Organization for Standardization. 

c. Testing shall be conducted at full the design load of the emergency engine or 

turbine. 

d. The Department may require emission or other testing to assure compliance with 

the emission limitations or fuel requirements. 

(f) Recordkeeping and Reporting. The owner or operator shall maintain records described 

in 310 CMR 7.26(42)(f) 1. through 4. Such records shall be maintained on site or for remote 

locations, at the closest facility where records can be maintained and shall be made available 

to the Department or its designee upon request. The owner or operator shall certify that 

records are accurate and true in accordance with 310 CMR 7.01(2)(a) through (c). 

1. Information on equipment type, make and model, and rated power output; and 

2. A monthly log of hours of operation, fuel type, heating value and sulfur content for 

fuel oil. A monthly calculation of the total hours operated in the previous 12 months; and 

3. Purchase orders, invoices, and other documents to substantiate information in the 

monthly log; and 

4. Copies of certificates and documents from the manufacturer related to certificates. 

(43) Engines and Turbines. 

(a) Applicability. 310 CMR 7.26(43) in its entirety shall apply to any person who owns or 

operates engines with a rated power output equal to or greater than 50kW and to turbines 

with a rated power output less than or equal to ten MW that are constructed, substantially 

reconstructed, or altered on or after March 23, 2006. 

1. Engines and turbines subject to 310 CMR 7.26(42) are not subject to the 

requirements of 310 CMR 7.26(43). 

2. The owner or operator of any engine or turbine subject to 310 CMR 7.26(43) to be 

operated as a peaking power production unit, a load shaving unit, a unit in an energy 

assistance program, a unit that produces mechanical power to run pumps, a unit used to 

compress natural gas at a pipeline compressor station, a unit burning landfill, digester, 

or biogas, or other biofuels, may comply with the requirements of 310 CMR 7:02(5)(c) 

for such unit in lieu of complying with the requirements of 310 CMR 7.26(43). 

Application must be made and written approval granted by the Department prior to 

construction, substantial reconstruction, or alteration of such engines or turbines. . 

3. Turbines with a rated output of less than one MW burning fuel oil, or greater than ten 

MW burning any fuel, shall comply with the requirements of 310 CMR 7.02(5)(c) for 

such unit in lieu of complying with the requirements of 310 CMR 7.26(43). Application 

must be made and written approval granted by the Department prior to construction, 

substantial reconstruction, or alteration of such turbines. 

(b) Emission Limitations. Owners and operators of engines or turbines subject to 310 CMR 

7.26(43) shall comply with the emission limitations established in 310 CMR 7.26(43): Table 

2, 3 and 4. 

10/21/05 (Effective 9/23/05) - corrected 310CMR-250.72.18.il 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.26: continued 

1. A supplier of an engine or turbine may seek to certify that an engine or turbine meet 

the emission limitations established in 310 CMR 7.26(43): Table 2, 3 and 4. All such 

certifications shall specify the make and model number of the engine or turbine. 

Certification means that the engine or turbine is capable of meeting the emission 

limitations for the lesser of 15,000 hours of operation or the first three years of operation. 

Supplier certification shall be on forms provided by the Department. 

2. On or before December 31,2010, the Department will complete a review of the state 

of, and expected changes in, technology and emission rates. The purpose of this review 

will be to determine whether the 310 CMR 7.26(43): Table 2 emission limitations for 

engines to be installed on and after January 1, 2012, should be amended. 

3. Beginning in 2017 and every five years thereafter, the Department shall review the 

state of technology and emission rates and determine whether the emission limits defined 

in 310 CMR 7.26(43): Table 2, 3 or 4. should be amended. 

4. The Department may at other times review the state of technology and emission rates 

to determine whether the emission limits defined in 310 CMR 7.26(43): Table 3 or 4 

should be amended. 

Table 2 

Emission Limitations - Engines 

Installation Date 

On and after 3/23/06 

•On and after 1/1/08 

On and after 1/1/12 

Oxides of 

Nitrogen 

0.6 lbs/MWh 

0.3 lbs/MWh 

Particulate Matter 

("Liquid Fuel Only) 

< 1MW 0.7 lbs/MWh; 

>• 1 MW 0.09 lbs/MW 

0.07 lbs/MWh 

0.15 lbs/MWh- 0.03Tbs/MWh. 

Carbon Monoxide 

10 lbs/MWh 

2 lbs/MWh 

1 lb/MWh 

Table 3 

Emission Limitations - Turbines 

Rated Power Output Oxides of Nitrogen Ammonia 

Less than 1 MW 0.47 lbs/MW-hr Natural Gas N/A 

1 to 10 MW 0.14 lbs/MW-hr Natural Gas 2.0 ppm 15% 0 2 0.09 lbs/MW-hr Natural Gas 

0.34 lbs/MW-hr Oil Dry Basis; 0.18 lbs/MW-hr Oil 

Carbon Monoxide 

0.47 lbs/MW-hr Natural Gas 

Table 4 

Emission Limitations - Engines and Turbines 

Installation Date 

On and after 3/23/06 

On and after 1/1/08 

On and after 1/1/12 

Carbon Dioxide 

1900 lbs/MWh 

1900 lbs/MWh 

1650 lbs/MWh 

(c) Fuel Requirements. On orafter July 1,2007, no person shall accept delivery for burning 

in any engine or turbine subject to 310 CMR 7.26(43) diesel or any other fuel that does not 

meet the applicable U.S. Environmental Protection Agency sulfur limits for fuel pursuant to 

40 CFR 80.29,40 CFR 80.500, and 40 CFR 80.520(a) and (b) as in effect January 18,2001. 

(d) Operational Requirements. Any person who owns or operates an engine or turbine 

subject to 310 CMR 7.26(43) shall comply with the following operational requirements: 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-250.72.18.12 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.26: continued 

1. Operation and Maintenance. The engine(s) and turbine(s) shall be operated and 

maintained in accordance with the manufacturers recommended operating and 

maintenance procedures. 

2. Sound. Engines, turbines and associated equipment shall be constructed, located, 

operated and maintained in a manner to comply with the requirements of 310 CMR 

7.10: Noise. 

3. Stack Height and Emission Dispersion. 

a. All engines or turbines shall utilize an exhaust stack that discharges so as to not 

cause a condition of air pollution (310 CMR 7.01(1)). Exhaust stacks shall be 

configured to discharge the combustion gases vertically and shall not be equipped 

with any part or device that restricts the vertical exhaust flow of the emitted 

combustion gases, including but not limited to, rain protection devices such as 

"shanty caps" and "egg beaters". Any emission impacts exhaust stacks upon 

sensitive receptors such as people, windows and doors that open, and building fresh 

air intakes shall be minimized by employing good air pollution control- engineering 

practices. Such practices include without limitation: 

i . Avoiding locations that may be subject to downwash of the exhaust; and 

i i. installing stack(s) of sufficient height in locations that will prevent and 

minimize flue gas impacts upon sensitive receptors. 

b. Engines and turbines burning liquid fuel and with a rated power output of less 

than 300 kw shall be equipped with an exhaust stack with a minimum stack height 

of five feet above the rooftop or the engine or turbine enclosure, whichever is lower. 

c. Engines and turbines with a rated power output equal to or greater than 300kw, 

but less than one MW shall be equipped with an exhaust stack with a minimum stack 

height of ten feet above the rooftop or the engine or turbine enclosure, whichever is 

• lower. 

d. Engines and turbines with a rated power output equal to or greater than one MW 

shall be equipped with a stack with a minimum stack height of 1.5 times the height 

of the building on which the stack is located. If the stack is lower than 1.5 times the 

building height or lower than the height of a structure that is within 5L of the stack 

(5L being five times the lesser of the height or maximum projected width of the 

structure), an EPA Guideline air quality model shall be run to document that the 

operation of the applicable engine or turbine will not cause an exceedance of any 

National Ambient Air Quality Standard. 

4. Visible Emissions. Engines and turbines must comply with all the requirements of 

310CMR7.06(l)(a)and(b). 

(e) Emission Certification. Monitoring and Testing. 

1. Certification. No person shall cause, suffer, allow, or permit the installation and 

subsequent operation of an engine or turbine unless said person has certified compliance 

with the requirements of 310 CMR 7.26(43) in its entirety in accordance with the 

provisions of 310 CMR 70.00: Environment Results Program Certification (initial and 

annual certification). Certification by such person shall include a statement from the 

supplier that the installed engine or turbine is capable of complying with the emission 

limitations for the lesser of 15,000 hours of operation or the first three years of operation. 

2. Monitoring. The Department may require emission or other monitoring to assure 

compliance with the requirements of 310 CMR 7.26(43). 

3. Testing. Any testing when required shall comply with the following: 

a. Tests to certify compliance with emission limitations must be performed in 

accordance with EPA reference Methods, California Air Resources Board Methods 

as approved by EPA, or equivalent methods as approved by the Department and EPA. 

b. Particulate matter, from liquid fuel reciprocating engines, shall be determined 

using Method 8178 D2 of the International Organization for Standardization. 

c. Testing shall be conducted at full design load of the engine or turbine. 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-250.72.18.13 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.26: continued 

d. The Department may require emission or other testing to assure compliance with 

the emission limitations or fuel requirements, 

(f) Record Keeping and Reporting. The owner or operator shall maintain records described 

in 310 CMR 7.26(43)(f) 1. through 4. Such records shall be made available to the Department 

or its designee upon request. The owner or operator shall certify that records are accurate and 

true in accordance with 310 CMR 7.01 (2)(a) through (c). 

1. Information on equipment type, make and model, and maximum power output; and 

2. A monthly log of hours of operation, gallons of fuel used, fuel type, heating value, 

and sulfur content. A monthly calculation of the total hours operated and gallons of fuel 

used in the previous 12 months shall be kept on site; and 

3. Purchase orders, invoices, and other documents to support information in the monthly 

Jog. . 

4. Copies of certificates and documents from the manufacturer related to certificates. 

(44) Change in Operational Status. An owner or operator of an engine or turbine subject to the 

requirements of 310 CMR 7.26(42): Emergency Engines and Turbines may elect to remove the 

hours of operation restriction to operate in a non-emergency by complying with either of the two 

following methods. 

(a) Submit an application for approval and receive approval under the requirements of 310 

CMR 7.02(5); or 

(b) Certify to the Department that the engine or turbine meets all applicable requirements 

of 310 CMR 7.26(43). 

7.27: NOx Allowance Program 

(1) Purpose and Scope. 

(a) The purpose of 310 CMR 7.27 is to control emissions of nitrogen oxides (NOx) during 

the summertime ozone season (May 15 1 through September 30th of each year). 310 CMR 7.27 

accomplishes this by establishing an emissions budget for NOx during each ozone season, 

implemented through a NOx allowance program beginning May 1, 1999. 

(b) The Massachusetts NOx emission budget was calculated by applying the control 

requirements of the September 1994 Ozone Transport Commission's Memorandum of 

Understanding (OTC MOU) to the 1990 baseline emissions level adopted by the Ozone 

Transport Commission on June 13, 1995. 

(c) Any additional NOx control requirements beginning on May 1,2003, may be modified 

before that date, if modeling and other analyses show that this program, and controls on 

volatile organic compound (VOC) emissions, will achieve attainment of the ozone National 

Ambient Air Quality Standard across the Ozone Transport Region. The Department has 

reserved 310 CMR 7.27(3)(b) to reflect any modifications needed to the Massachusetts NOx 

emission budget after 2003. 

(d) The Department will all ocate NOx allowances for each ozone season as described in 310 

CMR 7.27(6) equal to the total Massachusetts NOx emissions budget in tons. 

(e) NOx allowances from other states may be used to comply with 310 CMR 7.27, provided 

the other state has adopted and implemented a NOx allowance program consistent with 

310 CMR 7.27 as determined by the Department. 

(f) NOx allowances allocated by the Department may be used to comply with NOx 

allowance programs of other states, provided the other state has adopted and implemented 

a program consistent with 310 CMR 7.27 as determined by the Department. 

(2) Definitions. The definitions in 310 CMR 7.00 apply to 310 CMR 7.27. However, the 

following terms have the following meanings when they appear in 310 CMR 7.27. If a term is 

defined in 310 CMR 7.00 and in 310 CMR 7.27(2), the definition in 310 CMR 7.27(2) applies. 

Account Number means the identification number given by the Administrator to an account in 

the NOx Allowance Tracking System (NATS). 

Account means a record in the NOx Allowance Tracking System where allowances are recorded, 

and includes both compliance accounts and general accounts. 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-250.72.18.14 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.29: continued 

Output-based Emission Standard means the emission standards for each applicable pollutant, 

expressed in terms of pounds of pollutant emitted per megawatt-hour of net electrical output 

produced, as set forth in 310 CMR 7.29(5). 

Repowering means: 

(a) Qualifying Repowering Technology as defined by 40 CFR Part 72 or, 

(b) The replacement of the heat or power from a unit subject to 40 CFR Part 72 at an 

affected facility with either a new combustion unit, regardless of the fuel used, or the 

purchase of heat or power from the owner of a new combustion unit, regardless of the fuel 

used, provided the replacement unit: 

1. (Regardless of owner) is on the same, or contiguous property as the replaced unit; 

2. Has a maximum heat output rate or power output rate equal to or greater than the 

maximum heat output rate or power output rate of the replaced unit; and, the replaced 

unit is physically removed from the affected facility, or the heat or power available from 

the replaced unit is limited by limiting hours of operation, maximum heat input or some . 

other method approved by the Department; and, 

3. Incorporates technology capable of controlling multiple combustion pollutants 

simultaneously with improved fuel, boiler or generation efficiency and significantly 

greater waste reduction relative to the performance of technology in widespread 

commercial use as determined by the Department. 

Rolling with respect to an average means the calculation of an average by dropping the earliest 

month or calendar quarter value and incorporating the latest month or calendar quarter value for 

the period over which an average is calculated. 

Sequestration means the uptake and long-term storage of carbon in the biosphere, underground, 

or the oceans so that the buildup of carbon dioxide concentration in the atmosphere will be 

reduced or slowed. 

Total Mercury means the sum of particulate-bound and vapor-phase (elemental and oxidized) ' 

mercury in combustion gases or emitted to the atmosphere. 

(3) Applicability. The provisions of 310 CMR 7.29 apply to any person who owns, leases, 

operates or controls an affected facility. 

(4) General Provisions. 

(a) Each affected facility shall comply with the applicable emission standards established 

in 310 CMR 7.29(5). 

• (b) Anypersonsubjectto310CMR7.29shallcomplywithallotherapplicableregulations, 

including, but not limited to: 310 CMR 7.02: U Plan Approval and Emission Limitations; 

310 CMR 7.19: Reasonably Available Control Technology (RACT)for sources of Oxides 

of Nitrogen (NOJ; 310 CMR 7.28: NOx Allowance Trading Program; 310 CMR 

7.00: Appendix A: Emissions Offsets and Nonattainment Review; and 310 CMR 

7.00: Appendix C: Operating Permit and Compliance Program. If provisions or 

requirements from any other regulation or permit conflict with a provision of 310 CMR 7.29, 

the more stringent of the provisions will apply unless otherwise determined by the 

Department in the affected facility's operating permit. Regardless of the Department's 

determination in the operating permit, any person subject to 310 CMR 7.29 shall comply 

with all applicable federal requirements. 

(c) In the case of imminent threat to the reliability of New England's electricity system, the 

Department may promulgate an emergency regulation, as per M.G.L. c. 30A, §§2 and 3, to 

mitigate the emergency situation. 

(5) Emission Requirements. 

(a) Emission Standards for Affected Facilities. 

1. Nitrogen Oxides Emission Standards. 

a. Effective on the applicable date in 310 CMR 7.29(6)(c), emissions of nitrogen 

oxides shall not exceed an emission rate of 1.5 Ibs./MWh calculated over any 

consecutive 12 month period, recalculated monthly; and, 

9/23/05 310 CMR-250.72.57 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.29: continued 

b. Effective on the applicable date in 310 CMR 7.29(6)(c), emissions of nitrogen 

oxides shall not exceed an emission rate of 3.0 lbs./MWh calculated over any 

individual calendar month. 

2. Sulfur Dioxide Emission Standards. 

a. Effective on the applicable date in 310 CMR 7.29(6)(c), emissions of sulfur 

dioxide shall not exceed an emission rate of 6.0 lbs./MWh calculated over any 

consecutive 12 month period, recalculated monthly. 

b. Effective on the applicable date in 310 CMR 7.29(6)(c), 

i . Emissions of sulfur dioxide shall not exceed an emission rate of 3.0 lbs./MWh 

calculated over any consecutive 12 month period, recalculated monthly; and, 

i i. Emissions of sulfur dioxide shall not exceed an emission rate of 6.0 

lbs./MWh calculated over any individual calendar month. 

3. Mercury Emissions. 

a. By December 1, 2002, the Department will complete an evaluation of the 

technological and economic feasibility of controlling and eliminating emissions of 

mercury from the combustion of solid fossil fuel in Massachusetts in accordance with 

the Mercury Action Plan of the Conference of New England Governors and Eastern 

Canadian Premiers. 

b. Deleted. 

c. The Emission Control Plan submitted to the Department under 310 CMR 7.29(6) 

shall demonstrate, and any person who owns, leases, operates or controls an affected 

facility- shall ensure, that beginning at the time of the affected facility's earliest 

applicable compliance date in 310 CMR 7.29(6)(c), or at the time of the facility's 

earliest applicable Phase 1 NOx and S02 compliance date under an administrative 

order existing prior to June 4, 2004, whichever is later, total annual mercury 

emissions from combustion of solid fuels in units subject to 40 CFR Part 72 located 

at an affected facility or from re-burn of ash in Massachusetts will not exceed the 

average annual emissions calculated using the results of the stack tests required in 

310 CMR 7.29(5)(a)3.d.ii.. The average annual emissions calculated using the 

results of the stack tests required in 310 CMR 7.29(5)(a)3.d.ii. equal the average 

measured pounds of mercury emitted per million Btu consumed multiplied by the 

heat input in million Btu averaged over 1997, 1998 and 1999. A different threecalendar-year period within the five years prior to May 11, 2001 may be used if 

requested by the owner of an affected facility, and if the Department determines that 

the different period is more representative of historical actual heat input. Total 

annual mercury emissions equal the total emissions from: 

i. combustion of solid fossil fuel in units subject to 40 CFR Part 72 located at 

an affected facility, determined using emissions testing at least every other 

calendar quarter from October 1, 2006 until certified mercury CEMS are used 

to demonstrate compliance with the standards in 310 CMR 7.29(5)(a)3.e. or f., 

and using mercury CEMS thereafter, and 

i i. re-burn of ash, where such ash was produced by the combustion of fossil fuel 

or ash at any affected facility. When ash is re-bumed at an affected facility, the 

.associated mercury emissions shall be attributed to the affected facility at which 

the ash is re-burned. When ash produced by an affected facility is used in 

Massachusetts as a cement kiln fuel, as an asphalt filler, or in other high 

temperature processes that volatilize mercury, 

(i) the mercury content of the utilized ash shall be measured weekly using 

a method acceptable to the Department, 

(ii) all of the mercury in the utilized ash shall be assumed to be emitted, 

unless it can be demonstrated with data acceptable to the Department that a 

lesser amount of mercury is emitted, 

(iii) the associated mercury emissions shall be attributed to the affected 

facility from which the ash is shipped to the cement kiln, asphalt batching 

plant or other high temperature processing location, and 

(iv) a proposal shall be submitted for Department approval at least 45 days 

prior to such use, or at least 45 days prior to October 1, 2006, whichever is 

later, detailing the proposed measurement methods to be used to comply with 

7.29(5)(a)3.c.ii.(i) and (ii). 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-250.72.58 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.54: U Large Combustion Emission Units 

(1) Applicability. As set forth in 310 CMR 7.02(3) and (5)(c)l 1., a Comprehensive Plan 

Application is required from any person prior to substantially reconstructing one or more large 

combustion emission units resulting in a major modification. The requirements of 310 CMR 

7.54 shall not apply to a pollutant if the facility is located in an area designated as non-attainment 

under the Clean Air Act, § 107 (42 U.S.C. 7407), for that pollutant. 

(2) Definitions. The definitions in 310 CMR 7.00 apply to 310 CMR 7.54. However, the 

following terms have the following meanings when they appear in 310 CMR 7.54. If a term is 

defined both in 310 CMR 7.00 and in 310 CMR 7.54(2), the definition in 310 CMR 7.54(2) 

applies for purposes of 310 CMR 7.54. 

Actual Emissions means the actual rate of emissions of a pollutant, from an emissions unit, as 

determined in accordance with 310 CMR 7.54: Actual Ernissionsfa'i through (c) 

(a) In general, actual emissions as of a particular date shall equal the average rate, in tons 

per year, at which the unit actually emitted the pollutant during a two-year period which 

precedes the. particular date and which is representative of normal operation. The 

Department shall allow the use of a different time period upon a determination that it is more 

representative of normal operation. Actual emissions shall be calculated using the unit's 

actual operating hours, production rates, and types of materials processed, stored, or 

combusted during the selected time period. 

(b) For any emissions unit (other than an electric utility steam generating unit specified in 

310 CMR 7.54: Actual Emissions(c)). which has not begun normal operations on the 

particular date, actual emissions shall equal the potential to emit of the unit on that date. 

(c) For an electric utility steam generating unit (other than a new unit or the replacement of 

an existing unit), actual emissions of the unit following the physical or operational change 

shall equal the representative actual annual emissions of the unit, provided the facility owner. 

or operator maintains and submits to the Department on an annual basis for a period of five 

years from the date the unit resumes regular operation, information demonstrating that the 

physical or operational change did not result in an emissions increase. A longer period, not 

to exceed ten years, may be required by the Department if.it determines such a period to be 

more representative of normal facility post-change operations. 

Allowable Emissions means the emissions rate of.a facility calculated using the maximum rated 

capacity of the LCEU(s) (unless the LCEU is subject to federally enforceable limits which 

restrict the operating rate, or hours of operation, or both) and the most stringent emission 

standard, including one with a future compliance date. 

Begin Actual Construction means, in general, initiation of physical on-site construction activities 

on an LCEU, which are of a permanent nature. Such activities include, but are not limited to, 

installation of building supports and foundations, laying underground pipe work and construction 

of permanent storage structures. With respect to a change in method of operations, this term 

refers to those on-site activities other than preparatory activities which mark the initiation of the 

change. 

Commence as applied to construction of an LCEU means that the owner or operator has all 

necessary plan approvals required pursuant to 310 CMR 7.02 and either has: 

(a) Begun, or caused to begin, a continuous program of actual on-site construction of the 

LCEU, to be completed within a reasonable time; or 

(b) Entered into binding agreements or contractual obligations, which cannot be cancelled 

or modified without substantial loss to the owner or operator, to undertake a program of 

actual construction of the LCEU to be completed within a reasonable time. 

Complete means, in reference to an application for a plan approval, that the application contains 

all of the information necessary for processing the application. 

10/21/05 (Effective 9/23/05) - corrected 310 CMR-250.102.9 
310 CMR: DEPARTMENT OF ENVIRONMENTAL PROTECTION 

7.54: continued 

Construction means any physical change or change in the method of- operation (including 

fabrication, erection, installation, demolition, or modification of an emissions unit) which would 

result in a change in actual emissions. 

Electric Utility Steam Generating Unit means any steam electric generating unit that is 

constructed for the purpose of supplying more than one-third of its potential electric output 

capacity and more than 25 MW electrical output to any utility power distribution system for sale. 

Any steam supplied to a steam distribution system for the purpose of providing steam to a steamelectric generator that would produce electrical energy for sale is also considered in determining 

the electrical energy output capacity of the affected, facility. 

Indirect Heat Exchanger means combustion equipment in which the flame or the products of 

combustion are separated from any contact with the principal material in the process by metallic 

or refractory walls. It includes, but is not limited to, steam boilers (including combustion 

turbines with Heat Recovery Steam Generators), vaporizers, melting pots, heat exchangers, 

column reboilers, fractioning column feed preheaters, reactor feed preheaters, fuel-fired reactors 

such as steam hydrocarbon reformer heaters and pyrolysis heaters. 

Large Combustion Emission Unit (LCEU) means either: 

(a) an indirect heat exchanger with an energy input capacity greater than or equal to 

250,000,000 Btu per hour, or 

' (b) a municipal waste combustor with a capacity greater than 250 tons per day of municipal 

solid waste. . ' 

Major Modification means any physical change or change in the method of operation of large 

combustion emission unit(s) at a facility that would result in a significant net emissions increase 

of any pollutant subject to regulation under the Clean Air Act. A physical change or change in 

the method of operation shall not include: 

(a) Routine maintenance, repair and replacement; 

(b) Use of an alternative fuel or raw material by an LCEU which: 

1. The LCEU was capable of accommodating before January 6, 1975, unless such 

change would be prohibited under any federally enforceable condition which was 

established after January 6, 1975; or 

2. The LCEU is approved to use under any plan approval issued under 310 CMR 7.02; 

(c) An increase in the hours of operation or in the production rate, unless such change 

would be prohibited under any federally enforceable condition which was established after 

January 6, 1975; or 

(d) Any change in ownership at a facility; or 

(e) The addition, replacement or use of a pollution control project at an existing LCEU, 

unless the Department determines that such addition, replacement, or use renders the unit less 

environmentally beneficial; or 

(f) The installation, operation, cessation, or removal of a temporary clean coal technology 

demonstration project, provided that the project complies with all applicable requirements. 

Net Emissions Increase means the amount by which the sum of the following exceeds zero: 

(a) Any increase in actual emissions from a particular physical change or change in method 

of operation of LCEU(s) at the facility; and 

(b) Any other increases and decreases in actual emissions from LCEUs at the facility that 

are contemporaneous with the particular change and are otherwise creditable. 

(c) An increase or decrease in actual emissions is contemporaneous with the increase from 

the particular change only if it occurs between: 

1. The date five years before construction of the particular change commences; and 

2. The date that the increase from the particular change occurs. 

(d) An increase or decrease in actual emissions is creditable only if: 

1. the Department has not relied on it in issuing a plan approval required pursuant to 

310 CMR 7.54, or a PSD (Prevention of Significant Deterioration) permit pursuant to 40 

CFR 52.21 (Note: Prior to March 3, 2003 the Department issued PSD permits in 

Massachusetts), and 

9/23/05 310 CMR-250.102.10