national fuel€¦ · 11391 Meadowglen, Suite I Houston, TX 77082 Hoover & Keith Inc. ... eq (i.e.,...

national fuel

Kenneth E. Webster (716) 857-7067 Attorney

NATIONAL FUEL GAS SUPPLY CORPORATION / 6363 MAIN STREET / WILLIAMSVILLE, NY 14221-5887

November 13, 2015

Ms. Kimberly D. Bose, Secretary

Federal Energy Regulatory Commission

888 First Street, N.E.

Washington, DC 20426

RE: National Fuel Gas Supply Corporation and Empire Pipeline, Inc.

Northern Access 2016 Project

Docket Nos. CP15-115-000 and CP15-115-001

Dear Ms. Bose:

On March 17, 2015, National Fuel Gas Supply Corporation and Empire Pipeline,

Inc. (collectively “Applicants”) submitted an application for a certificate of public

convenience and necessity to construct and operate their Northern Access 2016 Project

and for authorization to abandon certain related facilities. On November 2, 2015,

Applicants submitted an amendment to their joint abbreviated application. Applicants

hereby supplement the application and environmental information with the enclosed

ambient sound survey and noise impact analysis for the proposed Pendleton Compressor

Station and Wheatfield dehydration facility.

Please direct any questions concerning this filing to the undersigned.

Very truly yours,

/s/ Kenneth E. Webster

Attorney

National Fuel Gas Supply Corporation and

Attorney for Empire Pipeline, Inc.

Enc.

cc: Christine Allen (Project Manager)

All Parties

CERTIFICATE OF SERVICE

I hereby certify that I have this day served, in accordance with the provisions of

Rule 2010 of the Commission’s Rules of Practice and Procedure, the foregoing

document upon each person designated on the official service list compiled by the

Secretary of the Commission in this proceeding.

Dated at Williamsville, New York this 13th day of November, 2015.

/s/ Matthew Luzi

Matthew Luzi

National Fuel Gas Supply Corp.

Empire Pipeline, Inc.

6363 Main Street

Williamsville, New York 14221

Telephone No. (716) 857-7813

PENDLETON COMPRESSOR STATION (Killian Road Site)

AMBIENT SOUND SURVEY and

NOISE IMPACT ANALYSIS

PENDLETON COMPRESSOR STATION (Killian Road Site)



(associated with the Northern Access 2016 Project)

H&K Report No. 3335

H&K Job No. 4869

Date of Report: November 3, 2015

Prepared for: National Fuel Gas 6363 Main Street Williamsville, NY 14221-5887

Submitted by: Brian R. Hellebuyck, P.E. Hoover & Keith Inc. 11391 Meadowglen, Suite I Houston, TX 77082

Hoover & Keith Inc. Consultants in Acoustics and Noise Control Engineering 11391 Meadowglen, Suite I, Houston, TX 77082 Phone: (281) 496-9876

National Fuel Gas Hoover & Keith, Inc. Pendleton Compressor Station (Killian Road Site) RN 3335 / JN 4869 Ambient Sound Survey and Noise Impact Analysis (11/03/15)

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REPORT SUMMARY

In this report, Hoover and Keith, Inc. (H&K) present the results of a September 24-27, 2015, ambient sound survey and subsequent noise impact analysis associated with the proposed Pendleton Compressor Station (“Station”), a new compressor station to be owned and operated by National Fuel Gas Corporation (NFG). The purpose of the ambient sound survey and acoustical analysis is to:

• Document the existing acoustic environment around the proposed site and locate the noise-sensitive areas (NSAs) surrounding the proposed Station.

• Project the sound level contribution that would result from operating the proposed Station installation.

• Determine noise control measures and noise specifications for the Station equipment to insure that the facility meets applicable sound level criteria.

The following table summarizes the measured ambient sound levels and noise quality analysis for the proposed Pendleton Compressor Station at the closest NSAs:

NSAs Ambient

Ld(1)

Ambient Ln

(1)Ambient

Ldn(1)

Est'd Leq of Station at Full Load

Est'd Ldn of Station at Full Load

Station Ldn

+ Ambient Ldn

Potential Increase Above

Ambient

(dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dB)

NSA #1 (Houses) 2,300 ft. NW 47.7 34.4 45.8 26.2 32.6 46.0 0.2

NSA #2 (Houses)

2,500 ft. W-NW 45.8 34.1 44.0 26.4 32.8 44.3 0.3

NSA #3 (Houses)

3,400 ft. W-SW 45.0 38.4 43.5 22.9 29.3 43.7 0.2

NSA #4 (Houses)

2,650 ft. E-SE 43.9 34.8 42.2 23.4 29.8 42.4 0.2

NSA #5 (Houses) 5,300 ft. E 45.8 34.1 44.0 18.3 24.7 44.0 0.0

NSA #6 (House) 1,400 ft. SE 43.9 34.8 42.2 31.6 38.0 43.6 1.4

Potential Future Houses 1,300 ft. NW 47.7 34.4 45.8 30.9 37.3 46.4 0.6

(1) L90 sound levels.

Distance to Center of Proposed

Comp. Units

Noise Quality Analysis for the Proposed Pendleton Station

at the Closest NSAs for the Killian Road Site


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The results of our measurements, observations and analysis indicate that the estimated full load station sound level contribution at the nearby NSAs should be significantly less than an Ldn of 55 dBA. Therefore, assuming the recommended noise control measures are followed and successfully implemented, it is our opinion that the sound level attributable to the proposed Station should not exceed the FERC criterion of 55 dBA Ldn at the nearby NSAs and there should be no perceptible increase in vibration. The potential increase above ambient noise levels, as measured and reported, ranges from 0 to 1.4 dB. Regarding the human perception for change in sound level (i.e., potential increase above ambient), a 0-3 dB change in sound level is representative of a minimum impact, a 5-6 dB change is a noticeable impact, and a 10 dB change is perceived as a doubling of sound level or a significant impact. Final Comments 1. NFG has instructed H&K to utilize state of the art noise control mitigation to achieve the

lowest possible sound level contributions for the proposed Pendleton Compressor Station, with a goal of being at least 15 dB below the FERC 55 dBA Ldn requirement, which results in the following sound levels:

• A Station sound level contribution equal to or less than 40 dBA Ldn at the closest NSAs.

• A Station sound level contribution equal to or less than 33.6 dBA at the closest NSAs.

2. As indicated in the noise quality analysis, the estimated sound level contribution of the

station ranges from 18 to 26 dBA at existing NSA #1 thru NSA #5. The estimated sound level contribution of the Station is 32 dBA at existing NSA #6 and 31 dBA at the closest potential future houses.

In conclusion, our measurements, observations and analysis indicate that the following:

• The proposed mitigation measures are representative of the state of the art noise mitigation measures.

• The estimated Station sound level contributions at NSA #6 and the potential future houses are less than 15 dB below the FERC criteria, but with very little engineering tolerance. Nonetheless, the Station sound level contributions at NSA #6 and the closest potential future houses should result in a minimum noise impact.

• The estimated Station sound level contributions at NSA #1 thru NSA #5 are significantly less than the 15 dB FERC criteria, with a significant margin of safety.


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TABLE OF CONTENTS

REPORT SUMMARY. ....................................................................................................i 1.0 INTRODUCTION .......................................................................................................... 1 2.0 SOUND CRITERIA. ...................................................................................................... 1 3.0 DESCRIPTION OF SITE AND PROPOSED COMPRESSOR STATION ...................... 4 3.1 Description of the Site. ...................................................................................... 4 3.2 Description of the Station Equipment ................................................................ 4 4.0 MEASUREMENT METHODOLOGY. ........................................................................... 5 5.0 MEASUREMENT RESULTS ........................................................................................ 6 6.0 NOISE IMPACT EVALUATION. ................................................................................... 7 6.1 Significant Sound Sources. ............................................................................... 7 6.2 Noise Modeling and Prediction Methodology. ................................................... 7 6.3 Noise Quality Analysis. ..................................................................................... 9 6.4 Estimated Sound Levels for Normal Unit Blowdowns. ..................................... 10 6.5 Construction Noise Impact. ............................................................................. 11 7.0 NOISE CONTROL REQUIREMENTS. ....................................................................... 11 7.1 Compressor Buildings. .................................................................................... 11 7.2 Auxiliary Building. ............................................................................................ 12 7.3 Turbine Exhaust Systems. .............................................................................. 14 7.4 Turbine Air Intake Systems. ............................................................................ 14 7.5 Turbine Lube Oil Coolers. ............................................................................... 15 7.6 Gas Coolers. ................................................................................................... 15 7.7 Aboveground Gas Piping. ............................................................................... 15 7.8 Meter Building. ................................................................................................ 16 7.9 Miscellaneous Equipment. .............................................................................. 17

-continued on next page-


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TABLE OF CONTENTS (cont’d.)

FIGURES AND TABLES Figure 1: Proposed Pendleton Compressor Station and Surrounding Area. ............... A-1 Figure 2: Proposed Pendleton Compressor Station Plot Plan. ................................... A-2 Table A: Leq and L90 Sound Levels (September 24-27, 2015). ................................ B-1 Table B: Reported Weather Conditions from Niagara Falls International Airport ....... B-3 Table C: Source Sound Power Levels with Mitigation ................................................ C-1 Figure 3: Sound Level Contour Map for the Proposed Pendleton Compressor Station .................................................................................... C-2 APPENDIX D: Town of Pendleton Noise Requirements. .................................................... D-1 Table D: Proposed Pendleton Station: Est'd Construction Noise at Closest NSA. ..... E-1 APPENDIX F: Acoustical Terminology Discussed in This Report. ...................................... F-1


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1.0 INTRODUCTION

In this report, Hoover and Keith, Inc. (H&K) present the results of a September 24-27, 2015, ambient sound survey and subsequent noise impact analysis associated with the proposed Pendleton Compressor Station (“Station”), a new compressor station to be owned and operated by National Fuel Gas Corporation (NFG). The purpose of the ambient sound survey and acoustical analysis is to:




2.0 SOUND CRITERIA

Typically, certificate conditions set forth by the Federal Energy Regulatory Commission (FERC) require that the sound level attributable to a new compressor station not exceed an equivalent day-night sound level (Ldn) of 55 dBA at any nearby NSA, such as residences, hospitals or schools. The Ldn is an energy average of the daytime Leq (i.e., Ld) and nighttime Leq (i.e., Ln) plus 10 dB. For an essentially steady sound source (e.g., gas compressor station) that operates continuously over a 24-hour period and controls the environmental sound level, the Ldn is approximately 6.4 dB above the measured Leq. Consequently, an Ldn of 55 dBA corresponds to a Leq of 48.6 dBA. There are no applicable State of New York1 noise ordinances for the Station. We are not aware of any applicable Niagara County noise ordinances. For reference, a summary of acoustical terminology and typical metrics used to measure and regulate environmental noise is provided at the end of this report in Appendix F. Town of Pendleton At the onset of the project and as identified in the original Pendleton Compressor Station noise impact reports2, for the previous Aiken Road Site, the Town of Pendleton contained the following noise requirement:

1 The NYSDEC has a Policy Document (i.e., Program Policy DEP-00-1; Revised Feb. 2, 2001, “Assessing and Mitigating Noise Impacts”) to provide guidance and clarify program issues for NYSDEC staff to ensure compliance with statutory and regulatory requirements for facility operations regulated under New York State Environmental Quality Reviews or “SEQR”.


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• 247-32. Glare, noise, odor and other nuisances. [Amended 8-24-1994]

In June and September of 2015, the Town of Pendleton website presented the following draft noise requirements:

• 247-32. Glare, noise, odor and other nuisances. (Draft dated 6/16/2015) • 247-32. Glare, noise, odor and other nuisances. (Draft dated 9/17/2015)

For information purposes, the text of all three versions of the Section 247-32. Glare, noise, odor and other nuisances are included in Appendix D. The noise requirements and definition of ambient noise and/or background noise for each of the three versions are summarized below:

• 247-32. Glare, noise, odor and other nuisances. [Amended 8-24-1994]

Chapter 247, Zoning Ordinance for the Town of Pendleton, New York, originally contained the following requirement:

247-32. Glare, noise, odor and other nuisances. [Amended 8-24-1994] B. There shall be no vibration or noise level at the property line greater

than the average noise level occurring on adjacent streets between the hours of 9:00 p.m. and 7:00 am.

• 247-32. Glare, noise, odor and other nuisances. (June 16, 2015 Draft)

The Town of Pendleton website previously included a revised Section 247-32. Glare, noise, order and other nuisances (Draft dated June 16, 2015), which included the following Table 1 noise requirements:

2 H&K RN 3167. Pendleton Compressor Station, Ambient Sound Survey and Noise Impact Analysis, associated with the Northern Access 2016 Project. April 10, 2015. H&K RN 3335. Pendleton Compressor Station (Preferred Location), Ambient Sound Survey and Noise Impact Analysis, associated with the Northern Access 2016 Project. May 26, 2015.


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Table 1: Maximum Permissible Sound Levels by Receiving Land Use Category

(Draft dated June 16, 2015) Maximum Permissible Sound Level

(dBAs) Receiving Land Use

Sound Source Land Use Category

Time Period Residential Nonresidential

Residential 7 AM to 11 PM 55 75 11 PM to 7 AM 50 50

Nonresidential 7 AM to 11 PM 65 75 11 PM to 7 AM 50 75

In the June 16, 2015 Draft ordinance, the Ambient Noise Level was defined as:

“The sound-pressure level of the all-encompassing noise associated with a given environment, being usually a composite of sounds from many sources and/or the A-weighted sound-pressure level exceeded 90% of the time. L90% based on a minimum period of 10 minutes.”

• 247-32. Glare, noise, odor and other nuisances. (September 17, 2015

Draft)

The Town of Pendleton website currently includes a 2nd revision to Section 247-32. Glare, noise, order and other nuisances (Draft dated September 17, 2015), which includes the following Table 1 noise requirements:

Table 1: Maximum Permissible Sound Levels by Receiving Land Use Category (Leq) (Draft dated September 17, 2015)

Daytime (7AM – 7PM) Evening (7PM – 10 PM) Nighttime (10PM – 7AM) Residential (dBA) 45 40 35 Residential (dBC) 63 58 53 Non-residential (dBA) 57 50 50 Non-residential (dBC) 75 68 68

In the September 17, 2015 Draft ordinance, the Background Sound Level (L90) is defined as:

“The sound pressure level (SPL) that is exceeded for 90% of the time varying sound level during a one-hour period, often designated L90. The


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background level shall be based on measured hourly L90 levels gathered continuously for at least 1 week. The day shall be divided in three time periods: (1) daytime, the hours from 7 AM to 7 PM, (2) evening, the hours from 7 PM to 10 PM, and (3) hours from 10 PM to 7 AM. The background shall be reported by time period, and computed as follows. The minimum hourly L90 shall be tabulated by time period and by day, and the arithmetic average by time period over all the days of measurement shall be computed. These three averages of daily minima shall be reported as that site’s daytime, evening, nighttime A-weighted background, respectively. For measurements performed during the summer months during periods of insect activity, an estimate of the contribution of insect noise to the background noise levels shall be made by the engineer.”

3.0 DESCRIPTION OF SITE AND PROPOSED COMPRESSOR STATION 3.1 Description of the Site

Figure 1 (Appendix A) depicts the proposed Station and surrounding area. The Station is located in the Town of Pendleton in Niagara County, New York. The surrounding area consists of agricultural lands, wooded lands, residences, a gun club, a topsoil operation and a landscaping company upon primarily level terrain. The closest NSA is a residence along Killian Road 1,400 ft. SE of the center of the proposed compressor units. Other NSAs include residences 2,300 ft. NW, 2,500 ft. W-NW, 3,400 W-SW, 2,650 ft. E-SE and 5,300 ft. E-NE of the center of the proposed compressor units. A new development is under construction NW of the Station, with the closest potential future houses approximately 1,300 ft. NW of the center of the proposed compressor units.

3.2 Description of the Station Equipment

Figure 2 (Appendix A) depicts the proposed Station Plot Plan. The noise impact analysis assumes that the Station will include two (2) Solar Taurus 70 Turbine Compressor Units that are each nominally rated at 11,107 HP (ISO, 59°F and sea level). The following describes auxiliary equipment and other notable items associated with the new station:

• Acoustically designed compressor buildings. • High performance turbine exhaust systems. • High performance turbine air inlet systems. • Low noise turbine lube oil coolers. • Low noise gas coolers.


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• Aboveground gas piping.• Meter building.• Office building.• PDC (control) building.• Auxiliary building with station air compressors.• Station standby generator.

4.0 MEASUREMENT METHODOLOGY

The measured and reported sound levels in the previous noise impact reports, for the previous Aiken Road site, were not representative of the original Town of Pendleton noise ordinance3 metric of “average noise level occurring on adjacent streets between 9 PM and 7 AM”. Therefore, NFG committed to perform an additional ambient survey in the near future under typical summertime meteorological conditions, which may also include typical environmental noise (i.e., sound of birds, insects, wind, traffic noise, etc.). NFG committed to ensure that the measurement procedure was performed in accordance with the original Town of Pendleton noise ordinance to document the “average noise level occurring on adjacent streets between 9 PM and 7 AM” metric.

However, the Town of Pendleton is drafting new noise requirements, which differ substantially from the original noise requirement in terms of both the definition of background sound levels and permissible sound levels. Because the sound level metrics in the current draft ordinance are out of the ordinary, NFG (and H&K) proceeded with a detailed 72 hour continuous ambient survey to document the existing Ld, existing Ln and existing Ldn at the existing NSAs in accordance with accepted industry practice.

Five (5) unattended sound level monitors measured the continuous sound level from September 24, 2015 at 7 AM to September 27, 2015 at 7 AM, noting that the sound level monitor locations are depicted on Figure 1 (Appendix A). The sound level monitors measured and stored the A-Wt. sound level in 1 minute increments (i.e., 1 minute Leq, L90 and L10) and octave band sound pressure levels (from 16 Hz. to 16,000 Hz.). The following is a description of the NSAs and the selected sound measurement positions:

Pos. 1: Adjacent to NSA #1: Houses located on Beach Ridge Rd., NW to N of the center of the proposed compressor units. The closest house at NSA #1 is approximately 2,300 ft. NW of the proposed compressor units. Near Proposed Future Houses: Potential houses within new development off of Beach Ridge Rd. The closest potential future house is approximately 1,300 ft. NW of the center of the proposed compressor units.

3 247-32. Glare, noise, odor and other nuisances. [Amended 8-24-1994]


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Pos. 2: Adjacent to NSA #2: Houses located on Beach Ridge and Townline Roads, W-

NW to W of the center of the proposed compressor units. The closest house at NSA #2 is approximately 2,500 ft. W-NW of the proposed compressor units.

Pos. 3: Adjacent to NSA #3: Houses located on Townline Rd., W-SW to SW of the center of the proposed compressor units. The closest house at NSA #3 is approximately 3,400 ft. W-SW of the proposed compressor units.

Pos. 4: Adjacent to NSA #4: Houses located on Ridgeview Drive, E-SE of the center of the proposed compressor units. The closest house at NSA #4 is approximately 2,650 ft. E-SE of the proposed compressor units. Near NSA #6: Single house on Killian Rd. approximately 1,400 ft. SE of the center of the proposed compressor units.

Pos. 5: Adjacent to NSA #5: Houses located on Bear Ridge Rd., E to NE of the center of the proposed compressor units. The closest house at NSA #5 is approximately 5,300 ft. E of the proposed compressor units.

5.0 MEASUREMENT RESULTS

The following Table 1 summarizes the daytime (Ld), nighttime (Ln) and day-night (Ldn) sound levels for the measured L90 sound levels:

Day 1 Day 2 Day 3 Avg'd Day 1 Day 2 Day 3 Avg'd Day 1 Day 2 Day 3 Avg'd

Ld Ld Ld Ld (1) Ln Ln Ln Ln Ldn Ldn Ldn Ldn

(1)

Pos. 1 48.6 46.8 56.9 47.7 37.2 33.6 32.4 34.4 46.8 44.9 54.9 45.8

Pos. 2 46.2 46.2 45.0 45.8 36.9 33.0 32.4 34.1 44.5 44.3 43.1 44.0

Pos. 3 47.7 44.5 42.9 45.0 41.5 36.3 37.3 38.4 46.2 42.8 41.5 43.5

Pos. 4 46.7 42.4 42.6 43.9 38.2 32.8 33.3 34.8 45.0 40.6 40.8 42.2

Pos. 5 46.2 46.2 45.0 45.8 36.9 33.0 32.4 34.1 44.5 44.3 43.1 44.0

Daytime Sound Level (Ld) Nighttime Sound Level (Ln) Day-Night Sound Level (Ldn)

(1) The mathematical average Ld for Position 1 included only Day 1 and Day 2 measured Ld sound levels. The measured Ld for Day 3 was excluded. The Average Ldn for Position 1 accordingly utilized only Day 1 and Day 2 measured Ld sound levels and Day 1 thru Day 3 measured Ln sound levels.

Table 1: Summary of Measured L90 Sound Levels during the September 24-

27, 2015 Ambient Sound Survey


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The following detailed sound level data is included in Appendix B:

• Table A: Hourly (energy averaged) Leq and L90 sound levels for Positions 1-5from September 24 to 27, 2015.

• Table B: Downloaded meteorological conditions from Niagara Falls InternationalAirport from September 24 to September 27, 2015.

6.0 NOISE IMPACT EVALUATION

6.1 Significant Sound Sources

The noise impact evaluation considers the noise produced by all significant sound sources associated with the proposed Station that could impact the sound contribution at the nearby NSAs. The following sound sources are considered significant:

• Turbine-compressor casing noise that penetrates the compressor buildings.• Noise of the turbine unit exhaust systems.• Noise of the turbine air intake systems.• Noise of the electric motor driven lube oil coolers.• Noise of the electric motor driven gas coolers.• Noise radiated by above ground compressor station piping.• Meter equipment noise that penetrates the meter building.

6.2 Noise Modeling and Prediction Methodology

The procedure for estimating the total (or overall) sound pressure level at any given location is as follows:

(a) The octave band sound levels for a specific in-plant source or equipment item at a specific receiver location is calculated using the octave band sound power emission levels of a sound source and applying the octave band environmental correction factors as determined by the environmental conditions (e.g. atmospheric, topographical, foliage, etc.) between that source and the receiver.

(b) This calculation is repeated for each source resulting in multiple octave band sound pressure level spectra at the receiver location.

(c) The individual octave band sound pressure spectra for each source are then summed logarithmically on an energy basis (within each octave band) resulting is a total octave band sound pressure level spectrum accounting for the influence of all of the sound sources at the receiver location.


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(d) The total sound pressure level spectrum is then A-weighted and the resulting A-weighted octave band sound levels summed on an energy or logarithmic basis to obtain the final overall A-weighted sound level that can be compared to the project criteria.

Items (a) through (d) above are repeated for each individual receiver location. Therefore due to the complexity of determining the sound level at multiple receiver locations from multiple sound sources it is advantageous to utilize a computer program incorporating standard algorithms that determine the sound level from each individual source, based on the environmental factors that separate the source from a receiver, and then combines the resulting individual sound levels from many sources into a total or cumulative sound level at that receiver Equipment sound power levels are based on library data of similar capacity/type equipment, and the sound power levels used for each piece of equipment are included in Appendix C.

The acoustical modeling for this project was conducted with a commercial noise modeling software, SoundPLAN (Version 7.4). The software specializes in computer simulations of noise and air pollution situations. The calculation standard is based on ISO 9613, Part 1: “Calculation of the absorption of sound by the atmosphere”, (1993) and Part 2: “General method of calculation”, (1996). Each noise radiating element was modelled based on its noise emission pattern. Concentrated sources such as coolers, air intake, exhaust, etc. were modelled as point sources, which radiate sound spherically. Sources inside buildings were modelled using the Hall-Out calculation methodology in SoundPLAN. Terrain Effect Terrain effect is considered by including the ground elevation information in and around the plant areas. The digital ground model has been developed from proposed site information and topography information based on Google Earth for areas extending beyond the compressor station. The type of ground surface affects the noise propagation from the source towards the receiver. Hard ground includes paving, water, ice, concrete and built-up areas, and hard ground (G=0) provides less absorption and more reflection. Porous ground includes ground covered by trees, vegetation and farming land, and porous ground (G=1) provides maximum absorption. For mixed ground uses that consist of built-up areas and porous surfaces, G ranges between 0-1. The following ground absorption values have been used in the noise prediction:


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• In-Station Areas: 0.6 • Off-Site Areas 0.6

Meteorological Conditions The following meteorological conditions and parameters have been used in the noise prediction:

• Temperature: 59 °F(15 °C) • Relative Humidity: 70 %• Air Pressure: 1013.3 mbar • Wind Speed: Favorable downwind (1 m/s to 5 m/s at 3 to 11m AGL)

Table 2 below summarizes the estimated octave-band sound pressure level and A-Wt. contributions at the surrounding NSAs for the closest NSAs for the proposed Station. A sound level contour map is included in Appendix C.

NSAs A-Wt.

31.5 63 125 250 500 1000 2000 4000 8000 Level

NSA #1 (Houses) 2,300 ft. NW 53.6 48.0 32.2 22.7 18.9 19.2 14.9 1.8 4.8 26.2

NSA #2 (Houses) 2,500 ft. W-NW 54.6 48.8 31.7 22.5 18.9 18.9 13.7 0.0 7.0 26.4

NSA #3 (Houses) 3,400 ft. W-SW 50.3 44.8 28.0 19.4 15.6 15.3 8.7 0.0 13.4 22.9

NSA #4 (Houses) 2,650 ft. E-SE 51.1 45.3 30.2 21.2 16.2 15.6 10.0 0.0 7.0 23.4

NSA #5 (Houses) 5,300 ft. E 45.8 39.7 23.7 13.8 7.2 5.3 0.0 0.0 14.3 18.3

NSA #6 (House) 1,400 ft. SE 59.6 53.3 37.6 27.3 24.7 24.8 19.8 10.8 0.0 31.6

Potential Houses 1,300 ft. NW 59.5 53.3 38.0 27.1 22.4 22.2 19.2 10.7 0.0 30.9

Distance to Center of Proposed Comp.

Units

SPL in dB Per Octave-Band Center Freq. (Hz)

Table 1: Estimated Octave-Band and A-Wt. Sound Level Contribution of Proposed Pendleton Compressor Station at the Closest NSAs and Potential Future Houses

6.3 Noise Quality Analysis

Table 3 (p. 10) summarizes the Noise Quality Analysis for the closest NSAs for the proposed Station:


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NSAs Ambient

Ld(1)

Ambient Ln

(1)Ambient

Ldn(1)

Est'd Leq of Station at Full Load

Est'd Ldn of Station at Full Load

Station Ldn

+ Ambient Ldn


Ambient


NSA #1 (Houses) 2,300 ft. NW 47.7 34.4 45.8 26.2 32.6 46.0 0.2

NSA #2 (Houses)

2,500 ft. W-NW 45.8 34.1 44.0 26.4 32.8 44.3 0.3

NSA #3 (Houses)

3,400 ft. W-SW 45.0 38.4 43.5 22.9 29.3 43.7 0.2

NSA #4 (Houses)

2,650 ft. E-SE 43.9 34.8 42.2 23.4 29.8 42.4 0.2

NSA #5 (Houses) 5,300 ft. E 45.8 34.1 44.0 18.3 24.7 44.0 0.0

NSA #6 (House) 1,400 ft. SE 43.9 34.8 42.2 31.6 38.0 43.6 1.4

Potential Future Houses 1,300 ft. NW 47.7 34.4 45.8 30.9 37.3 46.4 0.6

(1) L90 sound levels.


Comp. Units

Table 3: Proposed Pendleton Compressor Station - Noise Quality Analysis

As noted above in Table 3, the sound contribution of the proposed Station is estimated to be significantly less than the 55 dBA Ldn FERC Criteria at the nearby NSAs.

6.4 Estimated Sound Levels for Normal Unit Blowdowns

The sound levels associated with high pressure gas venting are a function of initial blowdown pressure, the diameter and type of blowdown valve, and the diameter and arrangement of the downstream vent piping. As expected, blowdown sound levels are loudest at the beginning of the blowdown event and they decrease as the blowdown pressure decreases. The following Table 4 summarizes the expected sound levels for normal blowdown events (i.e., unit start up and shut down) at the closest NSA:

"Normal" Blowdown Sound Source Closest NSA Distance / Direction to

Blowdown SilencerEst'd Initial Sound

Level for Blowdown

(dBA)Unit Blowdown House (NSA #6) 1400 ft. SE 37

Table 4: Estimated Initial Sound Levels for "Normal" Blowdown Event


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6.5 Construction Noise Impact

Table D (Appendix E) shows the calculation (i.e., spreadsheet analysis) of the estimated construction noise during Station construction activities. The acoustical analysis of the construction related activities considers the noise produced by any significant sound sources associated with the primary construction equipment that could impact the sound contribution at the nearby NSAs. The predicted sound contribution of construction activities was performed only for the closest NSA (i.e., NSA #2). Construction of the Station will consist of earth work (e.g., site grading, clearing & grubbing) and construction of the site foundations and equipment, and it is assumed that the highest level of construction noise would occur during site earth work (i.e., time frame when the largest amount of construction equipment would operate). The analysis indicates that the maximum A-wt. noise level of construction activities at the closest NSA would be equal to or less than 58 dBA (i.e., Ldn of approximately 58 dBA, since construction would only occur during daytime hours.

7.0 NOISE CONTROL REQUIREMENTS

The following section provides recommended noise control measures and equipment noise specifications along with other assumptions that may affect the noise generated by the facility.

7.1 Compressor Buildings

Building Structure As a minimum, walls/roof should be constructed with 18 gauge exterior steel and

interior layer of 8-inch thick unfaced mineral wool (e.g., 8.0 pcf uniform density) covered with a 24 gauge perforated liner. Thermal insulation, such as "R-19", should not be used as a substitute for the 8.0 pcf material.

Personnel entry doors should have a minimum STC-38 sound rating and could include door glazing if a 2' x 2' maximum view port is employed (e.g., 1/2 inch thick laminated glazing or double pane safety glass). Doors should seal well with the doorframe and be self-closing.

No windows, skylights or "open" louvers should be installed.

All voids and openings in the building walls resulting from penetrations should be patched and well sealed. Building construction details shall be consistent with a high performance acoustical compressor building.


-12-

A double roll up door may be necessary for the equipment access opening. Each

overhead sectional roll-up door, as a minimum, should be a 20 gauge insulated type design (e.g., 20 gauge exterior with a 22 gauge backskin with insulation core) and should be completely weather-stripped.

Building Ventilation

The building ventilation system should be designed to properly ventilate (and cool)

the building and equipment during maximum outside ambient temperatures with all personnel and equipment doors closed. Personnel and/or equipment doors will only be opened during maintenance activities.

The A-wt. sound level for each ventilation inlet should not exceed 40 dBA at 50 feet from the building penetration (i.e., inlet louver, acoustic inlet hood, etc.). The A-wt. sound level for each ventilation exhaust outlet should not exceed 40 dBA at 50 feet from the building penetration (i.e., exhaust louver, exhaust hood, etc.), noting that this sound source is at or near the compressor building roof. A ridge vent shall not be utilized. Each ventilation inlet and exhaust outlet shall assume that the following sound pressure levels exist inside the compressor building at and adjacent to the ventilation equipment:

SPLs per Octave-Band Center Freq. & A-Wt. Level 31.5 63 125 250 500 1000 2000 4000 8000 dBA 85 90 90 95 95 95 95 95 90 101

As a minimum, air-supply fans used for ventilation should include a metal boot

enclosing the fan; a minimum 36-inch length exterior silencer and a weather hood lined with acoustical insulation. Assuming separate roof exhaust vents will be utilized, each roof exhaust vent, as a minimum, should include a 36-inch length silencer (i.e., baffle-type design) mounted between the building surface and vent/hood (i.e., in the ventilator throat).

7.2 Auxiliary Building

Building Structure (for Mechanical Equipment Area)

As a minimum, walls/roof should be constructed with exterior steel of 24 gauge and interior layer of 4-inch thick unfaced mineral wool (e.g., 8.0 pcf uniform density) covered with a 24 gauge perforated liner. Thermal insulation, such as "R-19", should not be used as a substitute for the 8.0 pcf material.


-13-

Personnel entry doors should be insulated steel doors with 1/4 inch thick laminated

glass. Doors should seal well with the doorframe and be self-closing.

No windows or "open" louvers should be installed.

All voids and openings in the building walls resulting from penetrations should be patched and well sealed.

Overhead roll-up doors, as a minimum, should be a 22 gauge insulated type design (e.g., 20 gauge exterior with a 24 gauge backskin with insulation core) and should be completely weather stripped.

Building Ventilation (for Mechanical Equipment Area)

The building ventilation system should be designed to properly ventilate (and cool)

the building and equipment during maximum outside ambient temperatures with all personnel and equipment doors closed. Personnel and/or equipment doors should only be opened during maintenance activities.

The A-wt. sound level for each ventilation inlet should not exceed 40 dBA at 50 feet from the building penetration (i.e., inlet louver, acoustic inlet hood, etc.). The A-wt. sound level for each ventilation exhaust outlet should not exceed 40 dBA at 50 feet from the building penetration (i.e., exhaust louver, exhaust hood, etc.). Each ventilation inlet and exhaust outlet shall assume that the following sound pressure levels exist inside the compressor building at and adjacent to the ventilation equipment:

SPLs per Octave-Band Center Freq. & A-Wt. Level

31.5 63 125 250 500 1000 2000 4000 8000 dBA 85 85 85 85 90 90 90 85 75 95

The ventilation system inlet and exhaust systems shall be designed to control interior

building sound that escapes from the inlet and exhaust flow paths, interior building sound paths across ventilation system components (i.e., ducting break-in noise, etc.,) and sound that is generated by ventilation equipment (i.e., supply fans, exhaust fans, louvers, tempering coils, etc.).

As a minimum, air-supply fans used for ventilation should include a metal boot enclosing the fan; a minimum 36-inch length exterior silencer and a weather hood lined with acoustical insulation.


-14-

Assuming separate roof exhaust vents will be utilized, each roof exhaust vent, as aminimum, should include a 36-inch length silencer (i.e., baffle-type design) mountedbetween the building surface and vent/hood (i.e., in the ventilator throat).

7.3 Turbine Exhaust Systems

The exhaust system should include a two stage silencer system that provides the following total dynamic insertion loss (DIL) values at the rated turbine operating conditions:

DIL Values in dB per Octave-Band Center Freq. for Exh. Muffler System 31.5 63 125 250 500 1000 2000 4000 8000

9 19 30 40 50 50 50 45 35

The recommended method to achieve the above DIL values is to install one rectangular muffler (parallel baffle design) horizontally inside the building (to the greatest extent possible) and to install another rectangular muffler (parallel baffle design) vertically outside the building (i.e., integrated into the vertical exhaust stack). It is also required that the horizontal section of ducting (and support structure) is acoustically isolated from the vertical exhaust stack and silencer with a suitable vibration break.

7.4 Turbine Air Inlet Systems

The intake system should include two silencers in series (i.e., two stage silencing system) between the air intake filter and turbine unit. It is recommended that the first silencer is located inside the building, while the second stage silencer can be located outside the building, if required. It is also required that the first stage silencer (and support system) is acoustically isolated from the second stage silencer (and support structure) with an acoustical vibration break (i.e., 3” flexible fabric joint). The Solar supplied support structure for the 1st stage and 2nd stage silencers should be separated (i.e., not span across the flexible joint).

The first stage silencer can either be a "tubular" design or parallel baffle construction. The second stage silencer should be a parallel baffle construction. The "tubular" first stage silencer should meet the following dynamic insertion loss (DIL) values at the rated turbine operating conditions:

DIL Values in dB per Octave-Band Center Freq. for 1st Stage Muffler 31.5 63 125 250 500 1000 2000 4000 8000

0 2 3 4 18 38 47 54 50


-15-

The second stage parallel baffle silencer should meet the following static insertion loss (IL values) at the rated turbine operating conditions: IL Values in dB per Octave-Band Center Freq. for 2nd Stage Muffler

31.5 63 125 250 500 1000 2000 4000 8000 5 17 40 55 47 28 25 44 26

It is assumed that a pulse style, up-draft, air inlet filter that will provide the following static insertion loss (IL values) at the rated turbine operation is utilized: IL Values in dB per Octave-Band Center Freq. for Pulse Style Up-draft Filter

31.5 63 125 250 500 1000 2000 4000 8000 2 4 8 9 13 26 27 27 33

7.5 Turbine Unit Lube Oil Coolers

The Solar low noise lube oil cooler (i.e., maximum 80 dBA PWL) with a Moore Class 10000 MAG fan and V-Belt drive is required for this Station.

7.6 Gas Coolers It is assumed that each unitized gas cooler will consist of (1) bay with (2) fans per bay. The A-wt. sound level of each bay should not exceed 53 dBA at a distance of 50 feet from the unit perimeter at the rated operating conditions (i.e., (2) fans and motors in operation). Nonetheless, the coolers shall be equipped with V-Belt drive and Moore Class 10000 MAG style fans (Max. PWL per Fan = 85 dBA) are required, and the maximum fan tip speed shall not exceed 6,000 fpm.

7.7 Aboveground Gas Piping The Station high pressure gas piping including the Unit suction, discharge and bypass valves, and the Station suction and discharge headers should be buried to the extent possible. Any remaining aboveground piping can be acoustically lagged with a minimum 3" thick fiberglass or mineral wool (e.g., 8.0 pcf uniform density) that is covered with a mass-filled vinyl jacket (e.g., composite of 1.0 psf mass-filled vinyl laminated to 0.020" thick aluminum) if necessary. Aboveground valves can be covered with removable and/or reusable acoustic material and/or blankets, if necessary. The blanket material typically consists of a core of 2-inch thick needled fiber mat (6.0-8.0 pcf density) and a liner material of mass-loaded vinyl


-16-

(1.0-1.25 psf surface weight) that is covered with a coated fiberglass cloth. The inner layer of insulation should be covered with a stainless steel mesh instead of coated fiberglass cloth. It is also recommended that any aboveground gas piping should be separated from other metal structures such as metal gratings, walkways and stairs around the piping, to the greatest extent possible to facility acoustical lagging. Please note that thermal insulation (i.e., calcium silicate and banded metal jacketing) is not suitable for attenuating piping noise. If thermal insulation for any piping systems is required for personnel protection, etc, then consideration to utilize the acoustical system described above should be given.

7.8 Meter Building

Building Structure

As a minimum, walls/roof should be constructed with exterior steel of 24 gauge and interior layer of 4-inch thick unfaced mineral wool (e.g., 8.0 pcf uniform density) covered with a 24 gauge perforated liner. Thermal insulation, such as "R-19", should not be used as a substitute for the 8.0 pcf material.

Personnel entry doors should be insulated steel doors with 1/4 inch thick laminated glass. Doors should seal well with the doorframe and be self-closing.

No windows or "open" louvers should be installed.

All voids and openings in the building walls resulting from penetrations should be patched and well sealed.

Overhead roll-up doors, as a minimum, should be a 22 gauge insulated type design (e.g., 20 gauge exterior with a 24 gauge backskin with insulation core) and should be completely weather stripped.

Building Ventilation

The building ventilation system should be designed to properly ventilate the building

and equipment with all personnel and equipment doors closed. Personnel and/or equipment doors should only be opened during maintenance activities.

The A-wt. sound level for each ventilation inlet should not exceed 40 dBA at 50 feet from the building penetration (i.e., inlet louver, acoustic inlet hood, etc.). The A-wt. sound level for each ventilation exhaust outlet should not exceed 40 dBA at 50 feet from the building penetration (i.e., exhaust louver, exhaust hood, etc.). Each


-17-

ventilation inlet and exhaust outlet shall assume that the following sound pressure levels exist inside the compressor building at and adjacent to the ventilation equipment:

SPLs per Octave-Band Center Freq. & A-Wt. Level 31.5 63 125 250 500 1000 2000 4000 8000 dBA 85 85 85 85 90 90 90 85 75 95

7.9 Miscellaneous Equipment

Gas Blowdown Silencer (i.e., unit piping purge/unit blowdown): It is recommended that this sound source is silenced to 50 dBA at 300 ft. (as measured 5 ft. above the ground).

Fuel Gas Skids: It is recommended that the fuel gas skids are located inside the compressor buildings. If located outside the compressor buildings, it is recommended that any fuel gas skids be designed with regulators that can achieve 85 dBA at 3 ft. for the worst case design conditions (i.e., anticipated maximum pressure drop and flow across the regulator valve).

Station Standby Generator: It is recommended that the generator should not exceed 60 dBA at 100 ft. from the MCC/Generator building at rated operating conditions. This sound specification includes, but is not limited to, the following noise sources associated with the generator: (1) noise of the engine-generator that penetrates the MCC/Generator building, (2) noise of the exterior jacket/auxiliary water cooler, (3) noise of the engine exhaust (hospital/critical grade muffler should be employed), and (4) noise of the air intake system.

Pneumatic Valve Operator Exhaust Vents: It is recommended that each pneumatic operator exhaust vent is silenced with the manufacturer’s standard exhaust vent, such as supplied by Shafer Valve Company.

National Fuel Gas Hoover & Keith, Inc. Pendleton Compressor Station (Killian Road Site) RN 3335 / JN 4869 APPENDIX A – Vicinity Map and Station Plot Plan (11/03/15)

A-1

APPROXIMATE SCALE IN FEET

0 1400700 2800

N

1 Mile Radius

PENDELTONCOMPRESSORSTATION

- HOUSE

LEGEND

- NONRESIDENTIAL BUILDING

- TREES OR HEAVY FOLIAGE

- MEASUREMENT POSITION- NOISE SENSITIVE AREANSA

POS.4

POS.2

2300'

2650' NSA#4

GOLF COURSE

GUN RANGE

TOWNLINE RD

KILLIAN RD

BEACH RIDGERD

BEAR RIDGERD

2500'

3400'

POS.1

POS.3

POS.5

5300'

NSA#1

NSA#2

NSA#3

NSA#5

NSA#6

1400'

1300'

POTENTIALNEW DEVELOPMENT

Figure 1: Proposed Pendleton Compressor Station and Surrounding Area

National Fuel Gas Hoover & Keith, Inc. Pendleton Compressor Station (Killian Road Site) RN 3335 / JN 4869 APPENDIX A – Vicinity Map and Station Plot Plan (11/03/15)

A-2

KILLIAN RD

COMPRESSORBUILDINGS

FENCE LINEOFFICE

METERBUILDING

PROPERTY LINE

LIGHT INDUSTRIAL

R-1 RESIDENTIAL

LIG

HT

IND

UST

RIA

L

R-1

RES

IDEN

TIAL

PRO

PER

TY L

INE

PRO

PER

TY L

INE

PROPERTY LINE

LEGEND

- LAND USE CATAGORY

LIGHT INDUSTRIAL


0 200100 400

N

Figure 2: Proposed Pendleton Compressor Station Plot Plan

National Fuel Gas Hoover & Keith, Inc. Pendleton Compressor Station (Killian Road Site) RN 3335 / JN 4869 APPENDIX B – Measurement Data (11/03/15)

B-1

Date Hour HourEnding No. Leq L90 Leq L90 Leq L90 Leq L90 Leq L90

at: (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA)09/24/15 8:00 AM 1 49.1 45.4 55.3 54.1 52.4 49.9 50.7 47.2 55.3 54.109/24/15 9:00 AM 2 48.2 42.8 51.6 46.0 51.0 46.8 51.5 44.1 51.6 46.009/24/15 10:00 AM 3 50.1 39.4 45.5 44.1 46.4 39.2 47.6 43.1 45.5 44.109/24/15 11:00 AM 4 46.0 39.0 47.5 44.2 47.5 40.3 57.4 44.4 47.5 44.209/24/15 12:00 PM 5 46.1 40.7 47.1 44.6 53.8 51.7 56.3 41.6 47.1 44.609/24/15 1:00 PM 6 46.7 41.8 47.2 45.1 55.0 52.7 51.2 46.3 47.2 45.109/24/15 2:00 PM 7 46.9 42.9 47.3 45.8 47.1 43.5 49.1 45.4 47.3 45.809/24/15 3:00 PM 8 46.3 42.9 45.6 44.2 47.8 44.3 54.1 50.5 45.6 44.209/24/15 4:00 PM 9 49.3 43.7 46.7 45.0 49.4 45.7 51.5 47.9 46.7 45.009/24/15 5:00 PM 10 65.9 59.2 49.9 44.7 50.0 47.1 49.3 44.4 49.9 44.709/24/15 6:00 PM 11 50.2 45.5 47.4 44.5 50.7 47.4 57.3 46.8 47.4 44.509/24/15 7:00 PM 12 47.8 43.9 47.7 43.3 48.3 44.5 55.9 52.3 47.7 43.309/24/15 8:00 PM 13 46.0 42.5 44.1 42.2 49.0 46.6 46.6 43.7 44.1 42.209/24/15 9:00 PM 14 46.4 42.2 43.3 41.7 49.4 48.1 46.6 43.7 43.3 41.709/24/15 10:00 PM 15 45.6 40.4 41.6 40.5 48.6 47.3 45.3 43.2 41.6 40.509/24/15 11:00 PM 16 41.4 38.6 41.0 39.4 47.2 45.8 43.6 42.1 41.0 39.409/24/15 12:00 AM 17 44.0 37.6 39.7 38.6 45.7 44.7 42.7 40.9 39.7 38.609/25/15 1:00 AM 18 37.7 35.2 38.2 37.2 43.4 42.2 40.3 38.7 38.2 37.209/25/15 2:00 AM 19 38.3 34.0 37.6 35.8 41.8 40.7 38.5 36.6 37.6 35.809/25/15 3:00 AM 20 34.7 31.8 34.4 33.7 39.6 38.0 35.3 33.8 34.4 33.709/25/15 4:00 AM 21 35.9 32.2 33.3 32.4 37.0 34.8 36.2 33.5 33.3 32.409/25/15 5:00 AM 22 36.4 32.5 34.6 30.8 37.7 32.9 33.7 31.6 34.6 30.809/25/15 6:00 AM 23 43.1 38.2 39.2 34.8 42.6 36.0 40.3 35.4 39.2 34.809/25/15 7:00 AM 24 46.6 42.2 43.7 40.2 47.5 42.1 45.0 39.8 43.7 40.209/25/15 8:00 AM 1 48.8 44.7 51.5 49.1 51.3 47.7 48.7 43.9 51.5 49.109/25/15 9:00 AM 2 58.9 55.3 47.4 45.4 48.6 43.8 47.3 43.6 47.4 45.409/25/15 10:00 AM 3 45.1 39.0 45.7 43.3 46.3 41.3 52.6 41.8 45.7 43.309/25/15 11:00 AM 4 45.7 40.5 47.2 41.9 46.9 41.5 59.1 43.1 47.2 41.909/25/15 12:00 PM 5 45.9 40.2 44.4 40.5 46.4 39.8 58.6 38.8 44.4 40.509/25/15 1:00 PM 6 47.7 41.2 43.7 41.0 46.0 41.4 46.4 41.7 43.7 41.009/25/15 2:00 PM 7 46.2 42.0 44.1 41.7 47.7 44.3 47.9 43.6 44.1 41.709/25/15 3:00 PM 8 54.0 49.1 48.1 43.1 48.7 45.2 47.3 41.1 48.1 43.109/25/15 4:00 PM 9 48.5 43.5 46.7 43.9 48.4 45.4 48.4 43.8 46.7 43.909/25/15 5:00 PM 10 47.9 43.7 46.7 44.6 49.6 46.7 48.8 44.5 46.7 44.609/25/15 6:00 PM 11 62.5 50.8 63.1 54.4 49.5 46.1 50.0 42.7 63.1 54.409/25/15 7:00 PM 12 45.9 41.0 51.4 47.0 49.9 44.6 49.6 40.7 51.4 47.009/25/15 8:00 PM 13 44.8 40.8 45.4 42.9 47.9 44.6 45.8 41.2 45.4 42.909/25/15 9:00 PM 14 45.1 40.5 43.4 40.9 47.1 44.2 45.6 41.5 43.4 40.909/25/15 10:00 PM 15 45.5 39.1 41.8 39.6 45.4 42.8 43.4 39.8 41.8 39.609/25/15 11:00 PM 16 42.3 36.7 39.7 36.8 44.4 40.8 40.9 36.7 39.7 36.809/25/15 12:00 AM 17 40.3 34.7 37.0 34.6 43.0 38.9 39.7 34.6 37.0 34.609/26/15 1:00 AM 18 38.5 33.3 36.8 33.7 41.0 36.9 37.2 32.3 36.8 33.709/26/15 2:00 AM 19 36.2 31.8 35.6 32.5 39.8 36.3 36.7 32.5 35.6 32.509/26/15 3:00 AM 20 37.2 31.4 32.5 30.5 36.5 32.7 33.8 29.5 32.5 30.509/26/15 4:00 AM 21 33.3 28.3 35.4 29.3 34.8 31.1 36.7 29.0 35.4 29.309/26/15 5:00 AM 22 34.9 29.7 31.9 28.0 36.0 29.6 33.3 28.5 31.9 28.009/26/15 6:00 AM 23 40.1 33.8 36.2 31.0 39.7 32.2 36.4 32.0 36.2 31.009/26/15 7:00 AM 24 41.9 35.7 37.5 33.4 43.3 35.7 41.1 33.1 37.5 33.4

Position 1 Position 2 Position 3 Position 4 Position 5

Table A: Leq and L90 Sound Levels (September 24 -27, 2015) -continued on next page-


B-2

Date Hour Hour

Ending No. Leq L90 Leq L90 Leq L90 Leq L90 Leq L90at: (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA) (dBA)

09/26/15 8:00 AM 1 45.1 39.5 43.5 40.2 46.2 42.0 45.0 41.5 43.5 40.209/26/15 9:00 AM 2 52.6 49.4 44.5 41.3 47.5 42.9 46.4 42.8 44.5 41.309/26/15 10:00 AM 3 50.8 45.6 55.3 50.7 46.5 40.4 49.2 44.5 55.3 50.709/26/15 11:00 AM 4 47.6 40.3 52.2 47.2 46.1 40.6 50.6 45.2 52.2 47.209/26/15 12:00 PM 5 47.5 43.1 51.3 46.5 47.5 43.4 51.2 43.6 51.3 46.509/27/15 1:00 PM 6 47.0 42.5 49.7 44.6 47.6 41.6 50.7 44.0 49.7 44.609/27/15 2:00 PM 7 50.3 47.7 50.3 46.3 48.7 43.0 50.6 43.7 50.3 46.309/27/15 3:00 PM 8 47.7 44.2 48.5 44.8 47.2 43.3 50.9 44.2 48.5 44.809/27/15 4:00 PM 9 64.9 52.8 51.7 47.2 48.0 44.2 51.5 41.7 51.7 47.209/27/15 5:00 PM 10 63.8 55.4 49.9 45.9 47.9 44.0 47.8 40.3 49.9 45.909/27/15 6:00 PM 11 76.2 68.1 44.8 42.1 46.8 42.2 45.8 38.4 44.8 42.109/27/15 7:00 PM 12 46.9 40.2 44.7 38.3 46.4 40.8 46.1 38.7 44.7 38.309/27/15 8:00 PM 13 44.7 40.2 42.2 38.9 47.1 43.8 44.9 40.9 42.2 38.909/27/15 9:00 PM 14 43.9 39.3 41.0 39.0 47.5 44.8 46.7 42.2 41.0 39.009/27/15 10:00 PM 15 42.8 38.6 41.3 39.3 46.2 43.8 43.0 40.1 41.3 39.309/27/15 11:00 PM 16 41.3 36.8 40.1 37.6 44.6 42.1 42.2 38.7 40.1 37.609/27/15 12:00 AM 17 40.6 34.7 37.8 34.5 43.8 40.6 39.5 36.0 37.8 34.509/27/15 1:00 AM 18 41.4 32.7 37.4 33.1 43.2 38.5 42.9 32.7 37.4 33.109/27/15 2:00 AM 19 34.9 29.9 36.6 31.7 41.4 36.7 38.3 31.0 36.6 31.709/27/15 3:00 AM 20 32.8 29.2 31.0 29.1 39.1 33.8 35.6 28.8 31.0 29.109/27/15 4:00 AM 21 33.4 28.6 29.5 27.3 36.6 30.6 32.5 29.0 29.5 27.309/27/15 5:00 AM 22 32.1 27.8 29.2 26.8 35.1 30.1 31.3 28.6 29.2 26.809/27/15 6:00 AM 23 35.6 29.8 32.4 28.3 38.7 31.7 36.3 30.4 32.4 28.309/27/15 7:00 AM 24 39.5 32.6 35.1 30.0 40.0 34.0 36.2 31.1 35.1 30.0

Position 1 Position 2 Position 3 Position 4 Position 5

Table A: Leq and L90 Sound Levels (September 24 -27, 2015)


B-3

Time Temp. D.P. R.H. Pressure Visibility Wind Wind Speed Gust Speed Precip. Events Conditions Wind Dir.E.D.T. Temp. (F) D.P. (F) R.H. (%) (in. Hg.) (miles) Direction (mpg) (mph) (degrees)

9/24/2015 12:53 AM 54 50 86 30.3 10 Calm Calm - N/A Clear 09/24/2015 1:53 AM 55 51.1 86 30.3 10 Calm Calm - N/A Clear 09/24/2015 2:53 AM 54 51.1 90 30.3 9 Calm Calm - N/A Clear 09/24/2015 3:53 AM 54 51.1 90 30.3 9 Calm Calm - N/A Clear 09/24/2015 4:53 AM 53.1 50 89 30.31 8 Calm Calm - N/A Clear 09/24/2015 5:53 AM 52 48.9 89 30.33 8 Calm Calm - N/A Clear 09/24/2015 6:53 AM 52 50 93 30.35 7 Calm Calm - N/A Clear 09/24/2015 6:59 AM 52 48.9 89 30.34 7 East 3.5 - N/A Fog Patches of Fog 809/24/2015 7:53 AM 54 51.1 90 30.36 8 Calm Calm - N/A Scattered Clouds 09/24/2015 8:53 AM 61 55 81 30.37 10 Calm Calm - N/A Scattered Clouds 09/24/2015 9:53 AM 66.9 55 66 30.38 10 Calm Calm - N/A Scattered Clouds 09/24/2015 10:53 AM 72 53.1 51 30.38 10 East 4.6 - N/A Scattered Clouds 909/24/2015 11:53 AM 73 54 51 30.37 10 Variable 5.8 - N/A Scattered Clouds 09/24/2015 12:53 PM 75.9 55 48 30.35 10 ESE 3.5 - N/A Scattered Clouds 1109/24/2015 1:53 PM 77 55.9 48 30.34 10 NE 8.1 - N/A Scattered Clouds 509/24/2015 2:53 PM 78.1 57 48 30.32 10 ENE 10.4 - N/A Mostly Cloudy 609/24/2015 3:53 PM 78.1 57 48 30.32 10 East 10.4 - N/A Mostly Cloudy 809/24/2015 4:53 PM 75 61 62 30.32 10 ENE 10.4 - N/A Mostly Cloudy 609/24/2015 5:53 PM 73 60.1 64 30.32 10 NE 12.7 - N/A Mostly Cloudy 509/24/2015 6:53 PM 69.1 60.1 73 30.33 10 ENE 11.5 - N/A Mostly Cloudy 609/24/2015 7:53 PM 66 59 78 30.34 10 ENE 9.2 - N/A Mostly Cloudy 709/24/2015 8:53 PM 64 55 73 30.35 10 East 8.1 - N/A Overcast 909/24/2015 9:53 PM 63 55 75 30.35 10 East 8.1 - N/A Overcast 909/24/2015 10:53 PM 61 55 81 30.35 10 East 8.1 - N/A Overcast 1009/24/2015 11:53 PM 60.1 54 80 30.35 10 East 8.1 - N/A Clear 100

Table B: Reported Weather Conditions from Niagara Falls International Airport -continued on next page-


B-4


9/25/2015 12:53 AM 59 54 83 30.35 10 East 8.1 - N/A Clear 1009/25/2015 1:53 AM 57.9 53.1 84 30.34 10 East 5.8 - N/A Clear 909/25/2015 2:53 AM 55.9 52 87 30.33 10 ENE 6.9 - N/A Clear 709/25/2015 3:53 AM 55.9 52 87 30.32 10 East 5.8 - N/A Clear 809/25/2015 4:53 AM 55.9 51.1 84 30.32 10 East 4.6 - N/A Clear 809/25/2015 5:53 AM 54 50 86 30.32 10 ENE 4.6 - N/A Clear 609/25/2015 6:53 AM 55 51.1 86 30.34 10 Calm Calm - N/A Clear 09/25/2015 7:02 AM 55 51.1 86 30.34 10 East 3.5 - N/A Mostly Cloudy 809/25/2015 7:53 AM 55 52 89 30.35 10 Calm Calm - N/A Mostly Cloudy 09/25/2015 8:53 AM 61 53.1 75 30.35 10 East 5.8 - N/A Mostly Cloudy 1009/25/2015 9:53 AM 64.9 54 68 30.37 10 NE 8.1 - N/A Mostly Cloudy 509/25/2015 10:53 AM 66 55 68 30.37 10 ENE 10.4 - N/A Mostly Cloudy 709/25/2015 11:53 AM 69.1 55.9 63 30.36 10 ENE 8.1 - N/A Mostly Cloudy 709/25/2015 12:53 PM 71.1 57.9 63 30.35 10 NE 10.4 - N/A Mostly Cloudy 409/25/2015 1:53 PM 73 59 61 30.34 10 ENE 9.2 - N/A Mostly Cloudy 609/25/2015 2:53 PM 72 60.1 66 30.32 10 ENE 11.5 - N/A Mostly Cloudy 609/25/2015 3:53 PM 72 59 64 30.31 10 ENE 9.2 - N/A Mostly Cloudy 609/25/2015 4:53 PM 71.1 60.1 68 30.3 10 NE 11.5 - N/A Mostly Cloudy 509/25/2015 5:53 PM 69.1 59 70 30.32 10 NE 11.5 - N/A Mostly Cloudy 409/25/2015 6:53 PM 64 57 78 30.34 10 NE 9.2 - N/A Mostly Cloudy 509/25/2015 7:53 PM 61 54 78 30.36 10 ENE 11.5 - N/A Mostly Cloudy 609/25/2015 8:53 PM 60.1 51.1 72 30.37 10 East 10.4 - N/A Mostly Cloudy 809/25/2015 9:53 PM 60.1 48.9 67 30.37 10 East 10.4 - N/A Mostly Cloudy 809/25/2015 10:53 PM 59 48.9 69 30.38 10 East 9.2 - N/A Mostly Cloudy 809/25/2015 11:53 PM 57 48 72 30.39 10 East 8.1 - N/A Clear 80



B-5


9/26/2015 12:53 AM 57 48.9 74 30.39 10 ENE 9.2 - N/A Mostly Cloudy 609/26/2015 1:53 AM 55.9 48 75 30.39 10 East 5.8 - N/A Clear 809/26/2015 2:53 AM 55 48 77 30.38 10 East 6.9 - N/A Clear 809/26/2015 3:53 AM 54 48 80 30.39 10 ENE 6.9 - N/A Clear 709/26/2015 4:53 AM 54 46.9 77 30.39 10 ENE 8.1 - N/A Clear 709/26/2015 5:53 AM 53.1 46.9 80 30.4 10 East 6.9 - N/A Clear 809/26/2015 6:53 AM 52 46 80 30.42 10 East 5.8 - N/A Clear 809/26/2015 7:03 AM 52 46 80 30.41 10 ENE 6.9 - N/A Mostly Cloudy 709/26/2015 7:53 AM 53.1 48 83 30.43 10 East 5.8 - N/A Mostly Cloudy 809/26/2015 8:53 AM 57.9 50 75 30.44 10 East 4.6 - N/A Overcast 1009/26/2015 9:53 AM 61 53.1 75 30.44 10 East 9.2 - N/A Mostly Cloudy 909/26/2015 10:53 AM 64.9 54 68 30.44 10 East 9.2 - N/A Mostly Cloudy 809/26/2015 11:53 AM 68 55 63 30.43 10 ENE 10.4 - N/A Mostly Cloudy 709/26/2015 12:53 PM 70 55.9 61 30.42 10 East 8.1 - N/A Mostly Cloudy 809/26/2015 1:53 PM 72 57 59 30.4 10 NE 9.2 - N/A Mostly Cloudy 509/26/2015 2:53 PM 73.9 57.9 57 30.38 10 East 5.8 - N/A Mostly Cloudy 809/26/2015 3:53 PM 73 57.9 59 30.36 10 East 10.4 - N/A Mostly Cloudy 809/26/2015 4:53 PM 73 59 61 30.35 10 ENE 10.4 - N/A Mostly Cloudy 709/26/2015 5:53 PM 70 57.9 65 30.35 10 ENE 11.5 - N/A Mostly Cloudy 609/26/2015 6:53 PM 64.9 57 75 30.35 10 ENE 8.1 - N/A Mostly Cloudy 609/26/2015 7:53 PM 62.1 57 84 30.35 10 ENE 9.2 - N/A Mostly Cloudy 709/26/2015 8:53 PM 61 57 87 30.36 10 East 6.9 - N/A Mostly Cloudy 1009/26/2015 9:53 PM 60.1 57 90 30.36 10 East 8.1 - N/A Mostly Cloudy 1009/26/2015 10:53 PM 60.1 55.9 86 30.36 10 ESE 6.9 - N/A Scattered Clouds 1209/26/2015 11:53 PM 59 55.9 90 30.36 10 SE 4.6 - N/A Clear 130



B-6


9/27/2015 12:53 AM 55.9 54 93 30.35 7 SE 4.6 - N/A Clear 1309/27/2015 1:53 AM 57 55 93 30.35 10 SE 4.6 - N/A Clear 1309/27/2015 2:53 AM 57 54 89 30.34 10 SSE 3.5 - N/A Clear 1509/27/2015 3:53 AM 55.9 53.1 90 30.34 10 SSE 5.8 - N/A Clear 1509/27/2015 4:53 AM 55.9 52 87 30.33 10 South 6.9 - N/A Clear 1709/27/2015 5:53 AM 55.9 52 87 30.33 10 South 8.1 - N/A Clear 1709/27/2015 6:53 AM 55.9 52 87 30.33 10 South 4.6 - N/A Clear 1709/27/2015 7:02 AM 55 52 89 30.33 10 South 3.5 - N/A Partly Cloudy 1709/27/2015 7:53 AM 55.9 52 87 30.35 10 SSE 4.6 - N/A Partly Cloudy 1609/27/2015 8:53 AM 60.1 52 75 30.34 10 SSE 8.1 - N/A Partly Cloudy 1609/27/2015 9:53 AM 63 52 67 30.34 10 SSE 6.9 - N/A Partly Cloudy 1609/27/2015 10:53 AM 64.9 46.9 52 30.32 10 South 13.8 - N/A Partly Cloudy 1909/27/2015 11:53 AM 68 48.9 50 30.31 10 SE 8.1 - N/A Scattered Clouds 1409/27/2015 12:53 PM 72 50 46 30.29 10 South 11.5 - N/A Scattered Clouds 1909/27/2015 1:53 PM 73 50 44 30.26 10 South 10.4 - N/A Scattered Clouds 1909/27/2015 2:53 PM 75 51.1 43 30.22 10 South 8.1 - N/A Scattered Clouds 1709/27/2015 3:53 PM 75 54 48 30.19 10 SSW 9.2 - N/A Scattered Clouds 2009/27/2015 4:53 PM 75 54 48 30.18 10 South 11.5 - N/A Scattered Clouds 1909/27/2015 5:53 PM 72 55.9 57 30.17 10 SW 9.2 - N/A Mostly Cloudy 2309/27/2015 6:53 PM 68 55.9 65 30.18 10 WSW 5.8 - N/A Partly Cloudy 2409/27/2015 7:53 PM 66.9 55.9 68 30.17 10 South 3.5 - N/A Partly Cloudy 1909/27/2015 8:53 PM 66 55.9 70 30.18 10 South 3.5 - N/A Mostly Cloudy 1809/27/2015 9:53 PM 64.9 57 75 30.18 10 South 4.6 - N/A Mostly Cloudy 1909/27/2015 10:53 PM 66 55.9 70 30.17 10 South 6.9 - N/A Scattered Clouds 1909/27/2015 11:53 PM 64.9 55.9 73 30.17 10 South 9.2 - N/A Mostly Cloudy 190


National Fuel Gas Hoover & Keith, Inc. Pendleton Compressor Station (Killian Road Site) RN 3335 / JN 4869 APPENDIX C – Model Input and Sound Level Contour Output (11/03/15)

C-1

Table C below lists the sound power levels for the Sound Plan model.

Sound Source with A-Wt.Mitigation Measures 31.5 63 125 250 500 1000 2000 4000 8000 Level

Comp Bldg S - Roof 103 98 90 80 64 59 62 69 62 78.3Comp Bldg N - E Wall 102 96 87 76 60 54 57 64 56 75.3Comp Bldg N - N Wall 102 98 90 81 65 62 65 72 64 79.3Comp Bldg N - Roof 103 98 90 79 63 59 62 69 61 78.1Comp Bldg N - S Wall 103 97 88 77 60 55 58 65 57 76.4Comp Bldg N - W wall 101 96 88 77 60 55 58 65 57 75.6Comp Bldg S - E Wall 102 96 88 76 60 54 57 64 57 75.6Comp Bldg S - N Wall 102 97 90 80 65 61 64 71 63 78.7Comp Bldg S - S Wall 103 97 89 77 61 55 58 65 58 76.6Comp Bldg S - W Wall 102 96 88 77 60 55 58 64 57 75.6Gas Cooler North 94 92 89 86 84 84 80 79 74 88.4Gas Cooler South 94 92 89 86 84 84 80 79 74 88.4GT Exhaust Stack Exit N 115 108 93 85 79 75 69 62 59 85.7GT Exhaust Stack Exit S 115 108 93 85 79 75 69 62 59 85.7GT Exhust Duct N 103 99 91 82 73 71 69 66 63 80.5GT Exhust Duct S 103 99 91 82 73 71 69 66 63 80.5GT Intake N 106 101 92 73 62 34 36 53 48 79.0GT Intake S 106 101 92 73 62 34 36 53 48 79.0LO Clr N 87 85 82 79 77 77 73 72 67 81.4LO Clr S 87 85 82 79 77 77 73 72 67 81.4Meter Bldg E Wall 83 78 79 68 71 72 74 70 64 78.5Meter Bldg N Wall 80 74 74 63 65 64 66 62 56 70.9Meter Bldg S wall 80 73 73 61 62 61 63 59 53 68.3Meter Bldg W Wall 83 78 79 68 71 72 74 70 64 78.1Meter Bldg. Roof 83 77 78 67 70 71 73 68 62 77.1Piping N 85 90 90 87 78 80 80 80 70 86.8Piping S 85 90 90 87 78 80 80 80 70 86.8

PWL in dB Per Octave-Band Center Freq. (Hz)

Table C: Source Sound Power Levels with Mitigation Measures

National Fuel Gas Hoover & Keith, Inc. Pendleton Compressor Station (Killian Road Site) RN 3335 / JN 4869 APPENDIX C – Model Input and Sound Level Contour Output (11/03/15)

C-2

Figure 3 below depicts the sound level contours for the proposed Pendleton Compressor Station.

Figure 3: Sound Level Contour Map for the Proposed Pendleton Compressor Station

National Fuel Gas Hoover & Keith, Inc. Pendleton Compressor Station (Killian Road Site) RN 3335 / JN 4869 APPENDIX D – Town of Pendleton Noise Requirements (11/03/15)

D-1

The following documents from the Town of Pendleton are included in Appendix D:

(1) 247-32. Glare, noise, odor and other nuisances. [Amended 8-24-1994]

(2) 247-32. Glare, noise, odor and other nuisances. (Draft dated 6/16/2015)

(3) 247-32. Glare, noise, odor and other nuisances. (Draft dated 9/17/2015)

B. Except as otherwise provided in this chapter, fences or walls shall be permitted in any district, but not to exceed the following heights: seven feet where located in the back of the front wall of the principal building and three feet in front of the front wall, subject to conformance with visibility provisions (§ 247-27).

C. The good side of the fence must face towards the outside of the fenced enclosure, and all mounting rails and posts must be on the inside of the fenced enclosure.

D. Any fence or wall which may cause a fire hazard or a dangerous condition shall be prohibited.

E. Fences shall be a permanent-type and well maintained.

F. Snow fences and other such types shall not be permitted as permanent fences or remain more than six months.

G. No barbed wire shall be permitted between residences. This does not include customary farm fencing used for confining livestock.

§ 247-31. Antennas, towers and dishes. [Added 8-24-1994]

A. A building permit must be obtained before erecting any antenna tower.

B. No antenna tower shall be located on the roof of a structure without design and certification by a New York State licensed professional engineer.

C. No antenna tower shall be erected in a front yard.

D. All antenna towers shall be erected in a free-fall zone entirely on the owner's property (if the tower were to fall, it must land entirely on the owner's property).

§ 247-32. Glare, noise, odor and other nuisances. [Amended 8-24-1994]

A. All exterior lighting shall be directed away from adjacent properties and/or shielded in such a way that no direct glare shall be visible from adjoining public streets or adjacent lots when viewed by a person standing on ground level.

B. There shall be no vibration or noise level at the property line greater than the average noise level occurring on adjacent streets between the hours of 9:00 p.m. and 7:00 a.m.

C. There shall be no emission of odorous gases or other odorous matter in such quantities as to be offensive on adjoining streets or adjacent lots.

D. The erection or use of any building or structure or the use of any land for any purpose which shall be noxious or injurious by the reason of the production or emission of dust, smoke, refuse matter, odor, gas, fumes, noise, vibration or similar substances or conditions shall be prohibited.

§ 247-33. Temporary stands.

Temporary stands (to be used exclusively for the sale of agricultural or garden products

Town of Pendleton

247-32 Glare, noise, odor and other nuisances

B. Noise

1. Intent

The Pendleton Town Board determines that the creation of unreasonable noise within the Town limits of Pendleton is detrimental to the comfort, convenience, safety, health and welfare, and to the quality of life of the citizens of the Town. Therefore, it intends hereby to prohibit all unreasonable noise from all sources in order to preserve, protect and promote the health, safety and welfare, and the peace, quiet, comfort and repose of all persons within the Town.

2. Definitions

As used in this chapter, the following terms shall have the meanings indicated:

BACKGROUND SOUND LEVEL (L90)

The sound pressure level (SPL) that is exceeded for 90% of the time varying sound level during a one-hour period, often designated L90. The background level shall be based on measured hourly L90 levels gathered continuously for at least 1 week. The day shall be divided into three time periods: (1) daytime, the hours from 7 AM to 7 PM, (2) evening, the hours from 7 PM to 10 PM, and (3) nighttime, the hours from 10 PM to 7 AM. The background shall be reported by time period, and computed as follows. The minimum hourly L90 shall be tabulated by time period and by day, and the arithmetic average by time period over all the days of measurement shall be computed. These three averages of daily minima shall be reported as that site's daytime, evening, nighttime A- weighted background, respectively. For measurements performed during the summer months during periods of insect activity, an estimate of the contribution of insect noise to the background noise values shall be made by the engineer.

A-WEIGHTED SOUND-PRESSURE LEVEL

A measure of sound pressure level designed to reflect the response of the human ear, which does not respond equally to all frequencies. It is used to describe sound in a manner representative of the human ear’s response. It reduces the effects of the low with respect to the frequencies centered around 1000 Hz. The resultant sound level is said to be “A-weighted” and the values shall be reported as “dB(A)”.

C-WEIGHTED SOUND PRESSURE LEVEL

Similar in concept to the A-Weighted sound Level (dB(A)) but C-weighting does not de-emphasize the frequencies below 1k Hz as does A-weighting. C-weighting is used for measurements that must include the contribution of low frequencies in a single number representing the entire frequency spectrum. The

draft dated 9/17/2015 page 1

value of the sound pressure levels shall be reported in “dB(C)”.

SOUND PRESSURE LEVEL

The practical unit of measurement for sound-pressure level; the number of decibels of measured sound is equal to 20 times the logarithm to the base of 10 of the ratio of the sound pressure of the measured sound to the sound pressure of standard sound (20 micropascals); abbreviated dB.

EQUIVALENT CONTINUOUS SOUND PRESSURE LEVEL (Leq)

The equivalent steady-state SPL which contains the same acoustic energy as the time varying sound level during a one-hour period, often designated Leq. It is not necessary that the measurements be taken over a full one-hour time interval, but sufficient measurements must be available to allow a valid extrapolation to a one-hour time interval.

NOISE

Any increase in the background sound level heard and measured or otherwise determined and confirmed.

REAL PROPERTY BOUNDARY LINE

The imaginary line, including its vertical extension, that separates one parcel of real property from another.

SOUND-LEVEL METER

A meter that meets at least the Type 2 requirements of ANSI S1.4 and S1.4A-1985 (R2006), and has a C-weighting network for measuring C-weighted sound levels (dBC) meeting the characteristics and weighting specified in ANSI S1.43-1997 (“Specifications for Integrating Averaging Sound Level Meters for Type 1 instruments”).

UNREASONABLE NOISE

Any sound which either annoys, disturbs, injures or endangers the comfort, repose, health, peace or safety of a reasonable person of normal sensitivities or which causes injury to animal life or damage to property or business. Standards to be considered in determining whether “unreasonable noise” exists in a given situation include, but are not limited to, the following:

A. Amplitude (see alsp Table 1, below).

B. Leq above the background sound pressure level.

C. Tonality and sprectral characteristics.

D. Transient, stead-state or impulsive character of the noise.

In any case, exceedence of the Leq sound level limits in Table 1 will be deemed


unreasonable.

3. Prohibited Acts

The following acts and the causes thereof are declared to be in violation of this chapter:

A. The use of any sound-reproduction device outside of a structure whereby the sound emitted from such device is audible on property being used for residential purposes at a point more than 100 feet from the real property boundary line of the property from which said noise emanates.

B. The use or operation of any sound-reproduction device inside a structure so as to result in the sound, or any part thereof, emitted from such device to be projected therefrom outside the structure whereby the sound emitted from such device is audible on property being used for residential purposes at a point more than 100 feet from the real property boundary line of the property from which the noise emanates.

C. The use and operation of any sound-reproduction device in a vehicle which would constitute a threat to the safety of pedestrians or vehicle operators or where conditions of overcrowding or any street repair or any other physical conditions are such that the use of a sound-reproduction device would deprive the public of the right to the safe, comfortable, convenient, and peaceful enjoyment of a public street, park or place for public purpose and would constitute a threat to the safety and welfare of the public. Said noise disturbance is deemed to be in violation of this section if it can be heard from a distance of greater than 50 feet.

D. The use or operation of any sound-reproduction device in a vehicle which would constitute a threat to the safety of pedestrians or vehicle operators.

E. The use or operation of any sound-reproduction device within 500 feet of any school, church or courthouse while the same is in session so as to interfere with the function of such facility, provided that conspicuous signs are displayed indicating the location of such facility.

F. The use or operation of any sound-reproduction device within 500 feet of any hospital, nursing home or medical facility so as to interfere with the function of such facility or so as to disturb the quiet, comfort or repose of a reasonable person of normal sensitivities while confined to or being treated at such facility, provided that conspicuous signs are displayed indicating the location of such facility.

G. Snow removal equipment: The use of snow removal equipment between the hours of 11 p.m. and 7:00 a.m. of the following day so as to disturb the quiet, comfort or repose of a reasonable person of normal sensitivities.

H. The use or operation of any audible burglar alarm or motor vehicle burglar alarm, unless the operation of such alarm shall be terminated within 10 minutes after such alarm is first activated.


I. The operation of any motorcycle, motor vehicle with a gross vehicle weight rating in excess of 10,000 pounds or any auxiliary equipment attached to such motor vehicle for a period longer than 15 minutes in any hour while the vehicle is stationary for reasons other than traffic congestion, so that the sound emanated therefrom is audible on property being used for residential purposes between the hours of 9:00 p.m. and 7:00 a.m. of the following day. This provision shall not apply to authorized emergency vehicles or to public utility vehicles actually engaged in emergency operations.

J. No person shall operate or cause to be operated any recreational motorized vehicle, whether or not duly licensed and registered, either on or off a public right of way or on private lands at any time in such a manner as to create an unreasonable noise.

K. The use or operation of a refuse-collecting vehicle anywhere which, when collecting or compacting, projects sound which is audible on property being used for residential purposes between the hours of 9:00 p.m. and 7:00 a.m. of the following day.

L. The owning, possessing or harboring of any animal or bird which shall make sounds which are audible on property being used for residential purposes for a continued duration in excess of 15 minutes or which shall disturb the quiet, comfort or repose of a reasonable person of normal sensitivities.

M. The conduct of any construction activities, including but not limited to the erection, demolition, assembling, altering, installing or equipping of buildings, public or private roadways, roads, premises, parks, utility lines or other property, including related activities such as land clearing, grading, earthmoving, excavating, blasting, filling or landscaping, so as to project a noise therefrom which is audible on a property being used for residential purposes except that such activities may be conducted 1) between 7:00 a.m. and 9:00 p.m., on Monday through Friday; 2) between 8:00 a.m. and 5:00 p.m. on Saturday; and 3) between 9:00 a.m. and 5:00 p.m. on Sunday.

N. The making of any noise for advertising purposes in any street or public place or by means of aircraft; the advertisement, article, business, calling or profession upon any street, sidewalk or entrance to a place of business by means of any horn, megaphone, siren, bell, radio or any other sound-producing or sound-amplifying mechanism, instrument or device.

O. The use of any sound-reproduction device associated with a drive-through facility between the hours of 10:00 p.m. and 6:00 a.m. of the following day.

P. Noise levels by land use:

(1) For noise that is not defined as a violation in items A through O, it shall be unlawful for any person to operate or permit to be operated any noise source in a fixed location in such a manner as to create an impact sound level in dB(A)s or dB(C)s which exceeds the limits set forth for the receiving land use category in Table I when measured at the receiving property boundary.


(2) The residential land use category means locations zoned or otherwise authorized for residential purposes.

(3) If the A-weighted background sound level is within 5 dB of some or all of the limits in Table 1 or exceeds some or all of the limits in Table 1, then the A-weighted impact sound level shall be the A-weighted background level +6 dB. Example: If the background sound level is 34 dB(A) then in a residential area is the allowable limit is 40 dB(A) during nighttime (i.e. 34 + 6).

Q. Noise assessment report:

The project sponsor shall prepare and submit to the Town Board a noise assessment conforming to the following methods and published standards. The noise assessment report shall include certification by an independent acoustical engineer as to the predicted A- and C-weighted impact sound levels at potentially impacted locations offsite, and the measured background sound levels at a sampling of potentially impacted offsite parcels. The engineer should hold a P.E. in acoustic engineering, be an INCE member or INCE Board Certified member, or have at least 10 years experience in noise control.

The A-weighted background sound level measurements shall be made along the line from the nearest proposed noise source to within 25 feet of the center of the nearest offsite parcel. The actual position of the microphone shall be within 25 feet to either side of the line, and no closer than 50 feet from the property boundary of the offsite parcel. If positioning within this "measurement box" is not possible because of unique site conditions such as the position being underwater or the property being too small, then the unique conditions shall be fully documented and an alternate position selected and justified. The microphone shall be situated between 4 and 4.5 feet above the ground. Measurements shall be conducted using a sound-level meter in accordance with the general provisions of ANSI S1.13-2005. The report shall include each hourly measured A-weighted L90 level, the tabulated daily minima by time period, and the three time period averages. The report also shall include a sketch of the site showing distances to the structure(s), to the property line, etc., and several photographs showing the structure(s), the property, and the acoustical instrumentation.

The noise assessment report must, in a separate section, provide an analysis of all background sound level data.

Predictions of Leq sound pressure levels at points of reception are to be provided. For each such prediction, the A- and C-weighted level shall be calculated by applying the A- and C-weighting values from ANSI S1.4, then by adding the weighted mean square pressures, and finally by converting back to decibels. The overall predicted A- and C- weighted levels shall be the sum of the individual levels added on the basis of the mean square pressures.

The starting point for predicting A- and C-weighted sound pressure levels


at potential sensitive receptors shall be the manufacturer-supplied octave band sound power levels or octave band sound pressure levels at a specified distance determined by the manufacturer of any noise-generating equipment or devices. At a minimum, the octave band data shall include the 10 octave bands with nominal center frequencies ranging from 31.5 Hz to 8000 Hz (see ANSI S1.6- 1984), and the sound pressure levels for these bands shall be tabulated in a noise assessment report. Any data not available from the manufacturer shall be estimated from field measurements on like equipment or devices already in use or from other referenced reports or documents. Any such field measurements shall be described fully and documented in the report. Predictions for certain times of the day such as nighttime may use manufacturer certified lower sound power levels that correspond to a reduced usage or duty cycle, if the project sponsor warrants and affirms that this reduced power setting always will be used during the time of the day in question (e.g., nighttime).

For sites at which A-weighted background measurements were performed, the A- and C-weighted impact sound level predictions shall be made at the same point. For all other sites, a prediction point shall be selected that lies within the "measurement box" delineated above. The octave band sound pressure levels shall be predicted at the prediction point for the nearest project sound source using the sound propagation algorithms given by ISO 9613.

Table I: Maximum Permissible Sound Levels by Receiving Land Use Category (Leq) Daytime (7 AM – 7 PM) Evening (7 PM – 10 PM) Nighttime (10 PM – 7 AM)

Residential (dBA) 45 40 35Residential (dBC) 63 58 53Non-residential (dBA) 57 50 50Non-residential (dBC) 75 68 68

Commentary:

The alternative sound level limit of background level +6 dB is based on the NYSDEC guidance document, Assessing and Mitigating Noise Impacts, DEP-00-1, rev. February 2, 2001, at 13-14.* Otherwise, the sound level limits in Table 1 are based on numerous national and international criteria and standards. ____________

* “Increases [in sound pressure level, SPL] ranging from 0-3 dB should have no appreciable effect on receptors. Increases from 3-6 dB may have potential for adverse noise impact only in cases where the most sensitive of receptors are present. Sound pressure increases of more than 6 dB may require a closer analysis of impact potential depending on existing SPLs and the character of surrounding land use and receptors.”____________


The listed criteria for “unreasonable noise” are also identified in the NYSDEC guidance document, where they are associated with dB “penalty” amounts, or dB values added to predicted equivalent sound pressure levels.

With the exception of airports and highways, all cognizant authorities in the United States recommended a basic day night-sound level (DNL) of 55 dB, which implies a daytime equivalent level (Leq) of 55 dB and nighttime Leq of 45 dB. Similar recommendations are made by such international authorities as the World Health Organization and the World Bank. However, both the relevant national standard, ANSI S.12.9 Part 4 and the relevant international standard, ISO 1996 Part 1, contain recommended adjustments to these criteria based on the nature of the community and the newness of the noise source. Each of these standards contains a 10 dB adjustment for very quiet, typically rural communities for which peace and quiet is an expected value and amenity, and each contains a 5 dB adjustment for a new noise source for which the community has no experience. The DNL, with the values cited, assumes continuous or near-continuous sound. The resulting criterion is a reasonable variant of DNL equal to 45 dB, which is the general limit of 55 dB minus 10 dB for the quiet rural nature of the area.

The minor variant is that this recommendation is for the use of DENL, the day-evening-night sound level. DENL is used in California and all of Europe, and it divides the day into three time periods: (1) day, 7 AM to 7 PM, (2) evening, 7 PM to 10 PM, and (3) night, 10 PM to 7 AM. In contrast, DNL divides the day into two time periods: (1) day, 7 AM to 10 PM, and (2) night, 10 PM to 7 AM; there is no separate evening limit. DENL is chosen because of the large use of outdoors during the warmer-weather months in the Pendleton area. This 45 dB DENL criterion is broken out as 45 dBA during daytime, 40 dBA during evening, and 35 dBA during nighttime. In all cases, the corresponding C-weighted limit shall be the operable A-weighted limit plus 18 dB.

Also, it is noted that except for residential land uses, noise sensitive land uses do not appear to require the nighttime or evening adjustments that are made for residential uses. For example, hospitals typically have forced air ventilation with windows that do not usually open, and schools are not used during the night. Thus, for noise sensitive areas other than residential, a constant A-weighted criterion of 45 dB could be acceptable.


National Fuel Gas Hoover & Keith, Inc. Pendleton Compressor Station (Killian Road Site) RN 3335 / JN 4869 APPENDIX E – Analysis Methodology for Construction Noise (11/03/15)

E-1

DESCRIPTION OF THE CONSTRUCTION NOISE ANALYSIS METHODOLOGY AND THE SOURCE OF SOUND DATA

Equipment Est'd A-Wt. Resulting A-Wt. Assumed Max. Est'd Max. A-Wt.

Type of Power Rating Est'd Number Sound Level at PWL of Single No. Operating PWL or Sound

Equipment or Capacity Required 50 Ft.: Note (1) Piece of Equip. at One Time Level of Equip.

Diesel Generator 250 to 400 HP 1 to 2 81 dBA 113 dBA 1 113Bulldozer 250 to 700 HP 1 to 2 85 dBA 117 dBA 1 117Grader 450 to 600 HP 1 to 2 85 dBA 117 dBA 1 117Backhoe 130 to 210 HP 1 to 2 80 dBA 112 dBA 1 112Front End Loader 150 to 250 HP 1 to 2 85 dBA 117 dBA 1 117Truck Loaded 40 Ton As needed 82 dBA 115 dBA 1 115

Est'd Total Maximum A-Wt. PWL (dBA) of All Construction Site Equipment 123 Calc'd

Atten. (dB) due to Hemispherical Sound Propagation (850 Ft.): Note (2) -61 Ldn

Est'd Attenuation (in dB) due to Air Absorption and/or Foliage: Note (3) -5 Note (4)

Est'd Sound Level (dBA) at the Closest NSA Considering a 58 58Maximum Number of Equipment Operating at One Time dBA dBA

Table D: Pendleton CS (NY): Est'd Sound Contribution at the Closest NSA (i.e., NSA #6; approximately1,400 ft. SE of Site Center) during Peak Construction Activity

Note (1): Noise Emission Levels of construction equipment based on an EPA Report (meas'd sound data for a railroadconstruction project) and measured sound data in the field by H&K or other published sound data.

Note (2): Noise attenuation due to hemispherical sound propagation: Sound propagates outwards in all directions(i.e., length, width, height) from a point source, and the sound energy of a noise source decreases withincreasing distance from the source. In the case of hemispherical sound propagation, the source is locatedon a flat continuous plane/surface (e.g., ground), and the sound radiates hemispherically from the source.

The following equation is the theoretical decrease of sound energy when determining the resulting SPL ofa noise source at a specific distance (“r”) of a receiver from a source sound power level (PWL):

Decrease in SPL (“hemispherical propagation”) from a noise source = 20*log(r) – 2.3 dB, where “r” isdistance of the receiver from the noise source. For example, if the distance "r" is 1900 feet between thesite and closest NSA, the “hemispherical propagation” = 20*log(1400) – 2.3 dB = 61 dB.

Note (3): Noise attenuation due to air absorption & foliage: Air absorbs sound energy, and the amount of absorption("attenuation") is dependent on temperature and relative humidity (R.H.) of the air and the frequency of sound.For standard day conditions (i.e., no wind, 60 deg. F. and 70% R.H.), the attenuation due to air absorption forthe medium frequency” (i.e., 1000 Hz O.B. SPL) is approximately 1.5 dB per 1,000 feet. In addition, foliagesuch as forest/trees between the Station site and nearby NSAs can have a sound attenuation effect dependingon the amount/thickness of the foliage.

Note (4): Calc'd Ldn equal to the est'd A-wt. sound level since construction activities will occur only during daytime.

National Fuel Gas Hoover & Keith, Inc. Pendleton Compressor Station (Killian Road Site) RN 3335 / JN 4869 APPENDIX F - Acoustical Terminology (11/03/15)

F-1

Summary of Typical Metrics for Regulating Environmental Noise & Acoustical Terminology Discussed in the Report (1) Decibel (dB): A unit for expressing the relative power level difference between acoustical

or electrical signals. It is ten times the common logarithm of the ratio of two related quantities that are proportional to power. When adding dB or dBA values, the values must be added logarithmically. For example, the logarithmic addition of 35 dB plus 35 dB is 38 dB.

(2) Human Perception of Change in Sound Level

A 3 dB change of sound level is barely perceivable by the human ear A 5 or 6 dB change of sound level is noticeable If sound level increases by 10 dB, it appears as if the sound intensity has doubled.

(3) A-Weighted Sound Level (dBA): The A-wt. sound level is a single-figure sound rating,

expressed in decibels, which correlates to the human perception of the loudness of sound. The dBA level is commonly used to measure industrial and environmental noise since it is easy to measure and provides a reasonable indication of the human annoyance value of the noise. The dBA measurement is not a good descriptor of a noise consisting of strong low-frequency components or for a noise with tonal components.

(4) Background or Ambient Noise: The total noise produced by all other sources associated with a given environment in the vicinity of a specific sound source of interest, and includes any Residual Noise.

(5) Sound Pressure Level (Lp or SPL): Ten times the common logarithm to the base 10 of

the ratio of the mean square sound pressure to the square of a reference pressure. Therefore, the sound pressure level is equal to 20 times the common logarithm of the ratio of the sound pressure to a reference pressure (20 micropascals or 0.0002 microbar).

(6) Octave Band Sound Pressure Level (SPL): Sound is typically measured in frequency

ranges (e.g., high-pitched sound, low-pitched sound, etc.) that provides more meaningful sound data regarding the sound character of the noise. When measuring two noise sources for comparison, it is better to measure the spectrum of each noise, such as in octave band SPL frequency ranges. Then, the relative loudness of two sounds can be compared frequency range by frequency range. As an illustration, two noise sources can have the same dBA rating and yet sound completely different. For


F-2

example, a high-pitched sound concentrated at a frequency of 2000 Hz could have the same dBA rating as a much louder low-frequency sound concentrated at 50 Hz.

(7) Daytime Sound Level (Ld) & Nighttime Sound Level (Ln): Ld is the equivalent A-weighted sound level, in decibels, for a 15 hour time period, between 07:00 to 22:00 Hours (7:00 a.m. to 10:00 p.m.). Ln is the equivalent A-weighted sound level, in decibels, for a 9 hour time period, between 22:00 to 07:00 Hours (10:00 p.m. to 7:00 a.m.).

(8) Equivalent Sound Level (Leq): The equivalent sound level (Leq) can be considered an

average sound level measured during a period of time, including any fluctuating sound levels during that period. In this report, the Leq is equal to the level of a steady (in time) A-weighted sound level that would be equivalent to the sampled A-weighted sound level on an energy basis for a specified measurement interval. The concept of the measuring Leq has been used broadly to relate individual and community reaction to aircraft and other environmental noises.

(9) Day-Night Sound Level (Ldn): The Ldn is an energy average of the measured daytime Leq

(Ld) and the measured nighttime Leq (Ln) plus 10 dB. The 10-dB adjustment to the Ln is intended to compensate for nighttime sensitivity. As such, the Ldn is not a true measure of the sound level but represents a skewed average that correlates generally with past sound surveys which attempted to relate environmental sound levels with physiological reaction and physiological effects. For a steady sound source that operates continuously over a 24-hour period and controls the environmental sound level, an Ldn is approx. 6.4 dB above the measured Leq.

(10) Sound Level Meter (SLM): An instrument used to measure sound pressure level, sound level, octave-band SPL, or peak sound pressure level, separately or in any combinations thereof. The measured weighted SPL (i.e., A-Wt. Sound Level or dBA) is obtained by the use of a SLM having a standard frequency-filter for attenuating part of the sound spectrum.


F-3

SOUND LEVELS FOR TYPICAL ACTIVITIES REFERENCE AND COMMUNITY RESPONSESSubjective Human Home and Industrial dBA Community and Traffic Reference Community

Response and (Indoor Noise) Scale (Outdoor Noise) Loudness Reaction ToConversation (Level) Outdoor Noise

-- 140 -- Aircraft CarrierThreshold of Pain Military Jet Aircraft

-- 130 --Large Siren at 100 Ft.

Jet Takeoff at 200 Ft. 16 TimesRock Band (Max.) -- 120 -- as Loud

Threshold of Thunderstorm ActivityDiscomfort Discotheque (Max.) 8 Times

-- 110 -- Elevated Train as LoudSymphonic Music (Max.)

Maximum Vocal Effort Auto Horn at 5 Ft. 4 TimesIndustrial Plant -- 100 -- as Loud

Very Loud Compacting Trash TruckNewspaper Printing Rm. 2 Times

Shouting in Ear -- 90 -- Heavy Truck at 25 Ft. as Loud Vigorous ActionFood Blender and Law SuitsSymphonic Music (Typ.) Motorcycle at 25 Ft. Reference

Shouting -- 80 -- Loudness Threats ofGarbage Disposal Small Truck at 25 Ft. Legal Action

Very Annoying Alarm Clock Heavy Traffic at 50 Ft. Appeals to Officials-- 70 -- 1/2 as Loud Widespread

Moderately Loud Vacuum Cleaner Avg. Traffic at 100 Ft. ComplaintsElectric Typewriter

Normal Conversation -- 60 -- 1/4 as Loud Sporadic ComplaintsAir Conditioner at 20 Ft.

Light Traffic at 100 Ft. No Reaction,Typical Office -- 50 -- 1/8 as Loud Although Noise

Quiet is NoticeableLiving Room Typical Suburban AreaBedroom -- 40 --

BirdsongVery Quiet Library

-- 30 --Soft Whisper Broadcasting Studio Rural Area

Just Audible-- 20 --

Threshold-- 10 -- of Hearing

Hoover & Keith Inc. (Consultants in Acoustics) 11391 Meadowglen, Suite D Houston, Texas 77082 -- 0 --

-end of report-

WHEATFIELD DEHYDRATION FACILITY AMBIENT SOUND SURVEY

and NOISE IMPACT ANALYSIS

WHEATFIELD DEHYDRATION FACILITY



(associated with the Northern Access 2016 Project)

H&K Report No. 3168

H&K Job No. 4870

Date of Report: November 3, 2015

Prepared for: National Fuel Gas 6363 Main Street Williamsville, NY 14221-5887

Submitted by: Brian R. Hellebuyck, P.E. Hoover & Keith Inc. 11391 Meadowglen, Suite I Houston, TX 77082

Hoover & Keith Inc. Consultants in Acoustics and Noise Control Engineering 11391 Meadowglen, Suite I, Houston, TX 77082 Phone: (281) 496-9876

National Fuel Gas Hoover & Keith, Inc. Wheatfield Dehydration Facility – Northern Access 2016 Project RN 3168 / JN 4870 Ambient Sound Survey and Noise Impact Analysis (11/03/15)

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REPORT SUMMARY

In this report, Hoover and Keith, Inc. (H&K) present the results of a September 25, 2015 ambient sound survey and subsequent noise impact analysis associated with the proposed Wheatfield Dehydration Facility (“Station” or “Dehy Facility”), which will be owned and operated by National Fuel Gas Corporation (NFG). The purpose of the ambient sound survey and acoustical analysis is to:

• Document the existing acoustic environment around the proposed site and locate thenoise-sensitive areas (NSAs) surrounding the proposed Station.

• Project the sound level contribution that would result from operating the proposedStation installation.

• Determine noise control measures and noise specifications for the Station equipment toinsure that the facility meets applicable sound level criteria.

The following table summarizes the ambient sound levels and noise quality analysis for the proposed Wheatfield Dehydration Facility at the closest NSAs:

NSAs Meas'd Ld

Meas'd Ln

Calc'd Ambient

Ldn (1)

Est'd Leq

of Station at Full Load

Est'd Ldn


Station Ldn +

Ambient Ldn


Ambient


NSA #1 (Houses)

3,000 ft. S-SW 63.1 53.1 63.1 30.7 37.1 63.1 0.0

NSA #2 (Houses) 3,350 ft. S 60.3 58.3 64.0 29.2 35.6 64.0 0.0

NSA #3 (Houses) 2,450 ft. N 49.2 43.6 51.4 33.2 39.6 51.7 0.3

NSA #4 (Houses) 3,000 ft. NE 38.7 45.8 51.7 30.7 37.1 51.9 0.1

(1) Via Measured Ld and Ln.


Dehy Facility

Noise Quality Analysis for the Proposed Wheatfield Dehydration Facility at the Closest NSAs



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REPORT SUMMARY (cont’d)

The results of our measurements, observations and analysis indicate that the estimated full load sound level contribution, for the proposed Dehy Facility, at the nearby NSAs should be significantly less than an Ldn of 55 dBA. Therefore, assuming the recommended noise control measures are followed and successfully implemented, it is our opinion that the sound level attributable to the proposed Station (i.e., Dehy Facility) should not exceed the FERC criterion of 55 dBA Ldn at the nearby NSAs and there should be no perceptible increase in vibration. The potential increase above ambient noise levels is estimated to be less than 1 dB. Regarding the human perception for change in sound level (i.e., potential increase above ambient), a 0-3 dB change in sound level is representative of a minimum impact, a 5-6 dB change is a noticeable impact, and a 10 dB change is perceived as a doubling of sound level or a significant impact.


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TABLE OF CONTENTS Page

REPORT SUMMARY. ....................................................................................................i

1.0 INTRODUCTION .......................................................................................................... 1

2.0 SOUND CRITERIA. ...................................................................................................... 1

3.0 DESCRIPTION OF SITE AND PROPOSED DEHYDRATION FACILITY ..................... 4 3.1 Description of the Site. ...................................................................................... 4 3.2 Description of the Station Equipment ................................................................ 4

4.0 MEASUREMENT METHODOLOGY. ........................................................................... 5 4.1 Sound Measurement Locations ........................................................................ 5 4.2 Data Acquisition and Sound Measurement Equipment. .................................... 5

5.0 MEASUREMENT RESULTS ........................................................................................ 5

6.0 NOISE IMPACT EVALUATION. ................................................................................... 6 6.1 Significant Sound Sources. ............................................................................... 6 6.2 Estimated Sound Contribution. ......................................................................... 7 6.3 Noise Quality Analysis. ..................................................................................... 7 6.4 Construction Noise Impact. ............................................................................... 8

7.0 NOISE CONTROL REQUIREMENTS. ......................................................................... 8 7.1 Regeneration Skid Reboilers. ........................................................................... 8 7.2 Aboveground Gas Piping. ................................................................................. 9 7.3 Miscellaneous Equipment. .............................................................................. 10

8.0 FINAL COMMENT. .................................................................................................... 10

FIGURES AND TABLES

Figure 1: Proposed Wheatfield Dehydration Facility and Surrounding Area. ................. A-1 Figure 2: Proposed Wheatfield Dehydration Facility Plot Plan. ..................................... A-2



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TABLE OF CONTENTS (cont’d.)

FIGURES AND TABLES

Table A: Measured and Averaged Daytime and Nighttime Leq and Calculated Ldn. ....... B-1 Table B: Meteorological Conditions during the Daytime Sound Testing ....................... B-2 Table C: Measured and Averaged Octave-Band Daytime SPLs during Testing ........... B-2 Table D: Measured and Averaged Octave-Band Nighttime SPLs during Testing ......... B-3

Table F: Proposed Wheatfield Dehy Facility: Est'd Sound Contribution at NSA #1. ..... C-1 Table G: Proposed Wheatfield Dehy Facility: Est'd Sound Contribution at NSA #2. ..... C-1 Table H: Proposed Wheatfield Dehy Facility: Est'd Sound Contribution at NSA #3. ..... C-1 Table I: Proposed Wheatfield Dehy Facility: Est'd Sound Contribution at NSA #4. ..... C-2

Table J: Proposed Wheatfield Dehy Facility: Est'd Construction Noise at Closest NSA. ................................................................................................. D-1

APPENDIX E: Acoustical Terminology Discussed in This Report.......................................... E-1


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1.0 INTRODUCTION

In this report, Hoover and Keith, Inc. (H&K) present the results of a September 25, 2015 ambient sound survey and subsequent noise impact analysis associated with the proposed Wheatfield Dehydration Facility (“Station” or “Dehy Facility”), which will be owned and operated by National Fuel Gas Corporation (NFG). The purpose of the ambient sound survey and acoustical analysis is to:




2.0 SOUND CRITERIA

Typically, certificate conditions set forth by the Federal Energy Regulatory Commission (FERC) require that the sound level attributable to a new compressor station (or dehydration facility) not exceed an equivalent day-night sound level (Ldn) of 55 dBA at any nearby NSA, such as residences, hospitals or schools. The Ldn is an energy average of the daytime Leq (i.e., Ld) and nighttime Leq (i.e., Ln) plus 10 dB. For an essentially steady sound source (e.g., dehydration facility) that operates continuously over a 24-hour period and controls the environmental sound level, the Ldn is approximately 6.4 dB above the measured Leq. Consequently, an Ldn of 55 dBA corresponds to a Leq of 48.6 dBA. There are no applicable State of New York1 noise ordinances for the Station. We are not aware of any applicable Niagara County noise ordinances. The Town of Wheatfield has a noise ordinance that may be applicable to the Station. Chapter 200, Zoning Ordinance for the Town of Wheatfield contains the following requirement:

1 The NYSDEC has a Policy Document (i.e., Program Policy DEP-00-1; Revised Feb. 2, 2001, “Assessing and Mitigating Noise Impacts”) to provide guidance and clarify program issues for NYSDEC staff to ensure compliance with statutory and regulatory requirements for facility operations regulated under New York State Environmental Quality Reviews or “SEQR”.


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§ 200-87 Performance standards.A. Noise. "Noise" can be defined as unwanted or unpleasant sound. The following sections deal with noises that occur over a general area (ambient) and noises which are short-term in nature (impact), such as would emanate from a punch press or drop forge hammer. (1) Exemptions. The following sources of noise shall be exempt: (a) Transient noises of moving sources such as automobiles, trucks, airplanes and railroads. (b) Occasionally used safety signals, warning devices and emergency pressure relief valves. (c) Construction activity between 7:00 a.m. and 7:00 p.m. (2) Ambient noise. Such noise shall be measured with a sound-level meter having an A-weighted filter (see § 200-11, Definitions; word usage) constructed in accordance with specifications of the American National Standards Institute (ANSI) or equivalent. The following table describes the maximum sound level permitted to emanate from within an M-1 or M-2 District (using the slow meter response). As noted, the standards are to be met at any point of measurement within an adjacent residential or commercial district or within any M-1 District lot adjacent to the noise source.

Maximum Permitted Sound Level, (dBA)

Sound Measured within Adjacent Decibels – Continuous Slow Meter Response M-1 M-2

Residential Districts 50 50 Commercial Districts 60 65 M-1 District lot adjacent to noise source 70 --

(3) Short-term (impact) noises. The following table describes the maximum impact sound level permitted to emanate from within an M-1 or M-2 District (using the fast meter response). As noted, the standards are to be met at any point of measurement within an adjacent residential or commercial district or within any M-1 District lot adjacent to the noise source.


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Maximum Permitted Sound Level, (dBA) (re:0.002 Microbar)

Sound Measured within Adjacent Decibels – Impact Fast Meter Response M-1 M-2

Residential Districts 60 60 Commercial Districts 70 75 M-1 District lot adjacent to noise source 80 --

B. Vibration. "Vibration," as used in these performance standards, refers to ground-transmitted oscillations. They shall be measured with a seismograph or complement of instruments capable of recording vibration displacement and frequency particle velocity or acceleration simultaneously in three mutually perpendicular directions. (1) Maximum permitted vibration levels. Table I designates the applicable columns of Table II that apply on or beyond adjacent lot lines within the zone and on or beyond appropriate district boundaries. Vibration shall not exceed the maximum permitted particle velocities of Table II. Readings may be made at points of maximum vibration intensity.

Table I

District Adjacent Lot Line (within zone)

District Boundaries (on or beyond)

Residential District Boundary

M-1 C B1 A M-2 -- B2 A Notes: 1 = Commercial only 2 = M-1 and Commercial only

Table II Maximum Peak Particle Velocity – Inches/Second

Vibration A B C Steady State 0.02 0.05 0.10 Impact 0.04 0.10 0.20


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(2) For purposes of these performance standards, "steady-state vibrations" are vibrations which are continuous or in discrete impulses more frequent than 60 per minute. Discrete impulses which do not exceed 60 per minute shall be considered "impact vibrations." (3) Between the hours of 7:00 p.m. and 7:00 a.m., all of the permissible vibration levels indicated for residential district boundaries (Column A) shall be reduced to 1/2 of the indicated values.

In summary, the most stringent requirement contained in the Town of Wheatfield noise ordinance is that the maximum sound level contribution, of the proposed Dehy Facility, cannot exceed 50 dBA at a residential district boundary. It should be noted that the 50 dBA Town of Wheatfield requirement is less stringent than the FERC 55 dBA Ldn requirement, which equates to an Leq of 48.6 dBA.

For reference, a summary of acoustical terminology and typical metrics used to measure and regulate environmental noise is provided at the end of this report in Appendix E (pp. E-1 to E-3).

3.0 DESCRIPTION OF SITE AND PROPOSED DEHYDRATION FACILITY

3.1 Description of the Site

Figure 1 (p. A-1) depicts the proposed Station and surrounding area. The Station is located in the Town of Wheatfield in Niagara County, New York. The area immediately adjacent to the proposed Station is industrial in nature. The surrounding area consists of industrial buildings, a wastewater treatment plant and open land, upon primarily level terrain. The closest NSAs are residences along Lancelot Drive approximately 2,450 ft. N of the center of the Station. Other NSAs include residences 3,000 ft. S-SW, 3,350 ft. S and 3,000 ft. NE of the Station.

3.2 Description of the Station Equipment

Figure 2 (p. A-2) depicts the proposed Station Plot Plan. The noise impact analysis assumes that the Station will include the following equipment:

• (2) Dehydration trains• (2) regeneration skids (i.e., reboilers).• Aboveground gas piping.• RTU (control) building.


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• Station standby generator.

4.0 MEASUREMENT METHODOLOGY

4.1 Sound Measurement Locations

Four (4) locations were chosen to measure the sound levels near the closest NSAs south of the proposed Station adjacent to River Road, as depicted on Figure 2 (p. A-2). The following is a description of the NSAs and the selected sound measurement positions:

Pos. 1: Adjacent to NSA #1: Houses located on York and River Roads. The closest house is approximately 3,000 S-SW of the proposed Station.

Pos. 2: Adjacent to NSA #2: Houses located on Third Street and River Road. The closest house is approximately 3,350 ft. S of the proposed Station.

Pos. 3: Adjacent to NSA #3: Houses located on Lancelot Drive. The closest house is approximately 2,450 ft. N of the proposed Station.

Pos. 4: Adjacent to NSA #4: Houses located on Lakeside Drive. The closest house is approximately 3,000 ft. NE of the proposed Station.

4.2 Data Acquisition and Sound Measurement Equipment

Ambient sound measurements were performed by Larry Lengyel, of H&K during the daytime and nighttime periods on September 25, 2015. At the reported sound measurement locations, the A-wt. equivalent sound levels (Leq) and unweighted octave-band sound pressure levels (SPLs) were performed at approximately 5 ft. above ground. Typically, 3 representative samples of the ambient noise were performed at each sound measurement position. The acoustical measurement system consisted of a Larson Davis Model 2900 Real Time Analyzer (a Type 1 SLM per ANSI S1.4 & S1.11) equipped with a 1/2-inch microphone with a windscreen, and the SLM was calibrated within 1 year of the sound test date.

5.0 MEASUREMENT RESULTS

Table A (p. C-1) shows the measured daytime Leq (i.e., Ld) and the measured nighttime Leq (i.e., Ln) along with the logarithmic average of the measured Ld and Ln since more than one (1) sample of the sound level was measured. In addition, Table A includes an estimated day-night average sound level (i.e., Ldn), as calculated from the measured Ld and Ln and observations during the measurements. Meteorological conditions during the tests are summarized in Table B (p. C-2). The measured daytime and nighttime


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unweighted octave-band SPLs at the reported sound measurement positions and the average of the octave-band SPLs are provided in Table C (p. C-2) and Table D (p. C-3).

The following Table 1 summarizes the measured daytime ambient Ld and measured nighttime ambient Ln at the NSAs along with the calculated Ldn (as calculated from the measured Ld and Ln).

NSAs Meas'd Ld Meas'd Ln Calc'd or Est'd Ambient Ldn

(1)

(dBA) (dBA) (dBA)Pos. 1, Houses (NSA #1) 3,000 ft. S-SW 63.1 53.1 63.1

Pos. 2, Houses (NSA #2) 3,350 ft. S 60.3 58.3 64.0

Pos. 3, Houses (NSA #3) 2,450 ft. N 49.2 43.6 51.4

Pos. 4, Houses (NSA #4) 3,000 ft. NE 38.7 45.8 51.7

Distance to Center of Proposed Dehy

Facility

(1) Via Measured Ld and Ln.Table 1: Meas’d Sound Levels and Calculated Ldn at the Closest NSAs on

September 23, 2015

The goal of the ambient sound survey is to document the lower range of ambient sound levels for the meteorological conditions that existed during the sound survey, noting that the wind speeds were low for both the daytime and nighttime periods. The sound measurements were performed at or near the shoulder of public roads and the measurements were paused to obtain periods of minimum audible traffic noise, no passby traffic, periods with no direct aircraft flyovers, and other short term sounds to exclude “extraneous sound” from the sound survey.

In conclusion, the measured sound level data adequately quantifies the existing ambient sound levels around the site for the meteorological conditions that occurred during the sound survey. Observations during the site survey are included in Table A (p. A-1).

6.0 NOISE IMPACT EVALUATION

6.1 Significant Sound Sources

The noise impact evaluation considers the noise produced by all significant sound sources associated with the proposed Dehy Facility that could impact the sound contribution at the nearby NSAs. A description of the analysis methodology and source of sound data is provided in Appendix C (p. C-2). The following sound sources are considered significant:


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• Combustion noise for the reboilers on the regeneration skids. • Aboveground piping noise.

6.2 Estimated Sound Contribution

Tables F - I (pp. C-1 to C-2) show the calculation (i.e., spreadsheet analysis) of the estimated octave-band SPLs and the A-wt. sound level, at NSAs #1 - #4, contributed by the significant noise sources associated with the proposed facilities for standard day propagating conditions (i.e., no wind, 60 deg. F., 70% R.H.) and any shielding from buildings, terrain or foliage has been conservatively ignored. This spreadsheet analysis includes the potential noise reduction due to the anticipated and/or recommended noise control measures for equipment.

6.3 Noise Quality Analysis Table 2 below summarizes the Noise Quality Analysis for the closest NSAs for the proposed Station:

NSAs Meas'd Ld

Meas'd Ln

Calc'd Ambient

Ldn (1)

Est'd Leq


Est'd Ldn


Station Ldn +

Ambient Ldn


Ambient


NSA #1 (Houses)

3,000 ft. S-SW 63.1 53.1 63.1 30.7 37.1 63.1 0.0

NSA #2 (Houses) 3,350 ft. S 60.3 58.3 64.0 29.2 35.6 64.0 0.0

NSA #3 (Houses) 2,450 ft. N 49.2 43.6 51.4 33.2 39.6 51.7 0.3

NSA #4 (Houses) 3,000 ft. NE 38.7 45.8 51.7 30.7 37.1 51.9 0.1

(1) Via Measured Ld and Ln.


Dehy Facility

Table 2: Proposed Wheatfield Dehydration Facility - Noise Quality Analysis

As noted above in Table 2, the sound contribution of the proposed Station is estimated to be significantly less than the 55 dBA Ldn FERC Criteria at the nearby NSAs.


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6.4 Construction Noise Impact

Table J (p. D-1) shows the calculation (i.e., spreadsheet analysis) of the estimated construction noise during Station construction activities. The acoustical analysis of the construction related activities considers the noise produced by any significant sound sources associated with the primary construction equipment that could impact the sound contribution at the nearby NSAs. The predicted sound contribution of construction activities was performed only for the closest NSA (i.e., NSA #1). Construction of the Station will consist of earth work (e.g., site grading, clearing & grubbing) and construction of the site foundations and equipment, and it is assumed that the highest level of construction noise would occur during site earth work (i.e., time frame when the largest amount of construction equipment would operate). The analysis indicates that the maximum A-wt. noise level of construction activities at the closest NSA would be equal to or less than 48 dBA (i.e., Ldn of approximately 48 dBA, since construction would only occur during daytime hours.

7.0 NOISE CONTROL REQUIREMENTS

The following section provides recommended noise control measures and equipment noise specifications along with other assumptions that may affect the noise generated by the facility.

7.1 Regeneration Skid Reboilers

It is recommended that the reboiler heater meet an A-Wt. sound level of 55 dBA at 50 feet from the heater perimeter at the rated maximum operating conditions (includes any noise radiated from the heater stack opening). A "low noise" box-type burner assembly shall be utilized. In addition, the near field sound level of the reboiler combustion intake and exhaust noise shall not exceed the following sound level requirements:


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Maximum Allowable A-Wt. Sound Level

Combustion Air Intake Noise (1) (per fire tube) Combustion Exhaust Noise (1) (per fire tube)

85 dBA 85 dBA (1) At Distances and Positions per the following Figure. For part load to full load operation.

- Elevation - - Plan -

3'

3'

3'

3'

Exhaust Stack3' and 90 degrees(in any direction)

Fire Box Area3' from Flame Arrestor or Burner Tubes(in any direction)

Typical Dehy System Reboiler

If a fin fan condenser unit is required for emission control for the dehy system reboiler still column, it is recommended that the A-Wt. sound level of the condenser unit not exceed 55 dBA at a distance of 50 feet from the condenser unit perimeter at the rated operating conditions. It is recommended that a reciprocating triplex glycol injection pump is utilized.

7.2 Aboveground Gas Piping The acoustical analysis indicates that acoustical insulation for the Station abovegrade high pressure gas piping is not required. In the event piping noise becomes problematic, it can be acoustically lagged with a minimum 3" thick fiberglass or mineral wool (e.g., 8.0 pcf uniform density) that is covered with a mass-filled vinyl jacket (e.g., composite of 1.0 psf mass-filled vinyl laminated to 0.020" thick aluminum). Aboveground valves can be covered with removable and/or reusable acoustic material and/or blankets. The blanket material typically consists of a core of 2-inch thick needled fiber mat (6.0-8.0 pcf density) and a liner material of mass-loaded vinyl (1.0-1.25 psf surface weight) that is covered with a coated fiberglass cloth. The inner layer of


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insulation should be covered with a stainless steel mesh instead of coated fiberglass cloth.

It is also recommended that any aboveground gas piping should be separated from other metal structures such as metal gratings, walkways and stairs around the piping, to the greatest extent possible to facility acoustical lagging, if required.

Please note that thermal insulation (i.e., calcium silicate and banded metal jacketing) is not suitable for attenuating piping noise. If thermal insulation for any piping systems is required for personnel protection, etc., then consideration to utilize the acoustical system described above should be given.

7.3 Miscellaneous Equipment

Station Standby Generator and Acoustical Enclosure: It is recommended that the generator not exceed 60 dBA at 100 ft. from the package in all directions.

8.0 FINAL COMMENT

The results of our measurements, observations and analysis indicate that the estimated full load sound level contribution, for the proposed Dehy Facility, at the nearby NSAs should be significantly less than an Ldn of 55 dBA. Therefore, assuming the recommended noise control measures are followed and successfully implemented, it is our opinion that the sound level attributable to the proposed Station (i.e., Dehy Facility) should not exceed the FERC criterion of 55 dBA Ldn at the nearby NSAs and there should be no perceptible increase in vibration.

The potential increase above ambient noise levels is estimated to be less than 1 dB. Regarding the human perception for change in sound level (i.e., potential increase above ambient), a 0-3 dB change in sound level is representative of a minimum impact, a 5-6 dB change is a noticeable impact, and a 10 dB change is perceived as a doubling of sound level or a significant impact.

National Fuel Gas Hoover & Keith, Inc. Wheatfield Dehydration Facility – Northern Access 2016 Project RN 3168 / JN 4870 APPENDIX A – Vicinity Map and Station Plot Plan (11/03/15)

A-1

POS. 1

POS. 2

LIBERTY DR

PROPOSEDWHEATFIELDDEHYDRATIONFACILITY

YORK RD

THIRD ST

- HOUSE OR MOBILE HOME- NOISE SENSITIVE AREANSA

LEGEND

- NONRESIDENTIAL BUILDING

- MEASUREMENT POSITION

NSA#1

3000'

3350'

NSA#3

NSA#4

3000'

2450'

LANCELOT DRLAKESIDE DR

RR TRACK


0 900450 1800

N

RIVER RD

Figure 1: Proposed Wheatfield Dehydration Facility and Surrounding Area

National Fuel Gas Hoover & Keith, Inc. Wheatfield Dehydration Facility – Northern Access 2016 Project RN 3168 / JN 4870 APPENDIX A – Vicinity Map and Station Plot Plan (11/03/15)

A-2

COALESCER

STANDBYGENERATOR

COALESCER

DEHYDEHY

REGEN SKID

RTU BUILDING

REGEN SKID


0 3015 60

N

Figure 2: Proposed Wheatfield Dehydration Facility - Conceptual Plot Plan

National Fuel Gas Hoover & Keith, Inc. Wheatfield Dehydration Facility – Northern Access 2016 Project RN 3168 / JN 4870 APPENDIX B – Measurement Data (11/03/15)

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Meas'd A-Wt. Sound Levels (dBA)Measurement Set Day- Avg'd Night- Avg'd Calc'd

time of time of LdnMeas. Pos. & NSA Time / Date of Test Leq(Ld) Ld Leq(Ln) Ln Notes/ObservationsPos. 1 (NSA #1) 10:16 AM 60.3

Houses on River & York 10:17 AM 63.4Roads, 3,000 ft. S-SW 10:18 AM 64.5 63.1

of Dehy Facility 11:03 PM 52.011:04 PM 49.911:05 PM 55.5 53.1 63.1

Pos. 2 (NSA #2) 10:08 AM 61.3Houses on River & York 10:09 AM 61.1

Roads, 3,350 ft. S 10:10 AM 57.7of Dehy Facility 11:58 AM 60.0

11:00 PM 58.611:01 PM 54.5 58.3 64.0

Pos.3 (NSA #3) 10:41 AM 49.3Houses on Lancelot Dr. 10:44 AM 49.4

2,450 ft. N 10:45 AM 48.9 49.2of Dehy Facility 11:11 PM 42.9

11:13 PM 44.011:14 PM 44.0 43.6 51.4

Pos. 4 (NSA #4) 10:22 AM 39.0Houses on Lakeside Dr. 10:23 AM 38.4

3,000 ft. NE 10:25 AM 38.8 38.7of Dehy Facility 11:07 PM 45.1

11:08 PM 46.411:09 PM 45.8 45.8 51.7

Table A: Wheatfield Dehy (NY): Measured Daytime and Nighttime Sound Levels (Leq) andCalculated Ldn at the Closest NSAs on Sepember 25, 2015

If both Ld and Ln are measured and/or estimated, Ldn is calculated using the following formula:

Primary Daytime noise: Audible sounds included insects, wind, local traffic and a distant airplane.

Primary Nighttime noise: Audible sounds included insects, distant traffic and frogs.

Primary Daytime noise: Audible sounds included River Road traffic, birds, a distant dog and insects.

Primary Nighttime noise: Audible sounds included River Road traffic, insects and frogs.

Primary Daytime noise: Audible sounds included River Road traffic, birds and insects.

Primary Nighttime noise: Audible sounds included River Road traffic, insects and frogs.

Primary Daytime noise: Audible sounds included insects, birds, wind, local traffic and a distant airplane.

Primary Nighttime noise: Audible sounds included insects, distant traffic and frogs.

( )

+= + 10/1010/

10dnnd 10

24910

2415log10 LLL


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Measurement Set Temp. R.H. Wind Wind Peak

Meas. Pos. (°F) (%) Direction Speed Wind Sky Conditions

Pos. 1 - 4 74 66 2 5

mph mph

Pos. 1 - 4 59 81 from W 1 3

mph mph

Table B: Wheatfield Dehy (NY): Summary of the Meteorological Conditions During theSound Measurements on January 23-24, 2015

Time of Tests

Mostly cloudy

Clear

10:00 AM to 10:30 AM

11:00 PM to 12:00 AM

from W

Measurement Set A-Wt.

Meas. Pos. & NSA Time of Test 31.5 63 125 250 500 1000 2000 4000 8000 Level

Pos. 1 (NSA #1) 10:16 AM 59.7 62.1 58.5 53.3 53.1 58.0 52.5 47.0 38.2 60.3

Houses on River & York 10:17 AM 65.7 72.0 70.0 59.2 58.0 59.6 54.6 52.0 44.1 63.4

Roads, 3,000 ft. S-SW 10:18 AM 66.8 71.2 66.4 61.8 57.9 61.9 56.5 47.5 38.2 64.5

of Dehy Facility Average SPL 65.0 70.1 67.0 59.3 56.8 60.1 54.8 49.5 41.1 63.1

Pos. 2 (NSA #2) 10:08 AM 61.5 63.7 61.5 56.2 56.2 58.7 53.1 45.1 37.7 61.3

Houses on River & York 10:09 AM 59.9 64.3 64.0 57.1 56.3 58.2 52.4 45.3 38.2 61.1

Roads, 3,350 ft. S 10:10 AM 58.5 59.9 56.3 50.1 51.8 55.5 49.1 42.1 35.8 57.7


Pos.3 (NSA #3) 10:41 AM 54.5 49.2 44.4 33.9 32.1 32.2 31.9 46.8 43.7 49.3

Houses on Lancelot Dr. 10:44 AM 51.3 47.4 42.4 33.9 30.7 31.8 31.1 46.3 45.6 49.4

2,450 ft. N 10:45 AM 53.2 49.2 43.3 37.4 33.5 33.9 33.5 46.0 44.0 48.9


Pos. 4 (NSA #4) 10:22 AM 56.7 49.0 43.9 36.4 32.5 32.7 28.7 33.3 23.5 39.0

Houses on Lakeside Dr. 10:23 AM 57.1 49.0 43.0 36.6 32.1 30.9 26.6 33.4 22.0 38.4

3,000 ft. NE 10:25 AM 59.6 51.9 46.4 40.6 32.7 30.1 25.6 32.1 22.3 38.8


Table C: Wheatfield Dehy (NY): Measured Daytime Unweighted Octave-Band SoundPressure Levels (SPLs) at the Closest NSAs on September 25, 2015

Sound Pressure Level (SPL) in dB per Octave-Band Frequency (in Hz)


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Measurement Set A-Wt.

Meas. Pos. & NSA Time of Test 31.5 63 125 250 500 1000 2000 4000 8000 Level

Pos. 1 (NSA #1) 11:03 PM 53.5 51.2 46.2 43.0 43.1 49.5 45.5 39.1 27.0 52.0

Houses on River & York 11:04 PM 52.7 49.4 44.1 41.7 41.7 46.8 43.8 38.9 27.9 49.9

Roads, 3,000 ft. S-SW 11:05 PM 56.3 60.2 52.0 49.8 50.2 52.2 48.6 42.3 33.3 55.5


Pos. 2 (NSA #2) 11:58 AM 52.2 53.0 49.5 49.5 52.6 57.7 53.5 43.3 33.0 60.0

Houses on River & York 11:00 PM 51.6 50.5 49.0 49.7 51.8 56.0 52.2 43.0 32.1 58.6

Roads, 3,350 ft. S 11:01 PM 50.5 52.4 46.4 46.4 44.8 51.1 49.5 40.6 31.4 54.5


Pos.3 (NSA #3) 11:11 PM 49.7 48.0 39.9 33.8 31.0 29.9 37.3 38.8 29.4 42.9

Houses on Lancelot Dr. 11:13 PM 54.1 49.5 43.3 39.3 35.4 33.1 37.9 39.3 29.7 44.0

2,450 ft. N 11:14 PM 51.6 52.6 41.6 38.2 36.5 32.4 37.9 39.4 30.0 44.0


Pos. 4 (NSA #4) 11:07 PM 53.5 47.8 42.3 37.9 37.6 36.4 42.0 34.7 22.6 45.1

Houses on Lakeside Dr. 11:08 PM 52.5 52.1 51.5 43.9 40.0 37.4 42.4 34.9 21.8 46.4

3,000 ft. NE 11:09 PM 53.0 52.9 47.3 41.9 37.6 36.1 42.6 35.6 23.6 45.8


Table D: Wheatfield Dehy (NY): Measured Nighttime Unweighted Octave-Band SoundPressure Levels (SPLs) at the Closest NSAs on September 25, 2015

Sound Pressure Level (SPL) in dB per Octave-Band Frequency (in Hz)

National Fuel Gas Hoover & Keith, Inc. Wheatfield Dehydration Facility – Northern Access 2016 Project RN 3168 / JN 4870 APPENDIX C – Analysis Methodology for Station Noise (11/03/15)

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Source No. SOURCE PWL & OTHER CONDITIONS/FACTORS PWL or SPL in dB Per Octave-Band Center Freq. (Hz) A-Wt.

& Dist. (Ft) ASSOCIATED WITH THE ACOUSTICAL ANALYSIS 31.5 63 125 250 500 1000 2000 4000 8000 Level

1) PWL of Dehy Unit 100 98 96 94 93 91 88 83 80 96PWL for 2 Units 103 101 99 97 96 94 91 86 83NR of Noise Control 0 0 0 0 0 0 0 0 0

3000 Hemispherical Radiation -67 -67 -67 -67 -67 -67 -67 -67 -67Atm. Absorption (70% R.H., 60 deg F) 0 0 -1 -1 -2 -5 -9 -23 -41Source Sound Level Contribution 36 33 31 29 27 22 15 0 0 28

2) PWL of Aboveground Piping 85 84 88 89 93 96 98 94 88 102NR of Noise Control 0 0 0 0 0 0 0 0 0Misc. Atten. 0 0 0 0 0 0 0 0 0

3000 Hemispherical Radiation -67 -67 -67 -67 -67 -67 -67 -67 -67Atm. Absorption (70% R.H., 60 deg F) 0 0 -1 -1 -2 -5 -9 -23 -41 Calc'dSource Sound Level Contribution 18 16 20 21 24 24 22 4 0 28 Ldn

Est'd Contribution of Proposed Dehy Facility 36 34 31 29 28 26 23 5 3 30.7 37.1

Table F: Wheatfield Dehy Facility (NY): Est'd Contribution of Station at NSA #1








Table G: Wheatfield Dehy Facility (NY): Est'd Contribution of Station at NSA #2




2450 Hemispherical Radiation -65 -65 -65 -65 -65 -65 -65 -65 -65Atm. Absorption (70% R.H., 60 deg F) 0 0 0 -1 -2 -4 -7 -19 -34Source Sound Level Contribution 37 35 33 31 29 25 18 2 0 30


2450 Hemispherical Radiation -65 -65 -65 -65 -65 -65 -65 -65 -65Atm. Absorption (70% R.H., 60 deg F) 0 0 0 -1 -2 -4 -7 -19 -34 Calc'dSource Sound Level Contribution 19 18 22 23 26 27 25 10 0 31 Ldn


Table H: Wheatfield Dehy Facility (NY): Est'd Contribution of Station at NSA #3

National Fuel Gas Hoover & Keith, Inc. Wheatfield Dehydration Facility – Northern Access 2016 Project RN 3168 / JN 4870 APPENDIX C – Analysis Methodology for Station Noise (11/03/15)

C-2








Table I: Wheatfield Dehy Facility (NY): Est'd Contribution of Station at NSA #4

DESCRIPTION OF THE STATION NOISE ANALYSIS METHODOLOGY AND THE SOURCE OF SOUND DATA

In general, the predicted sound level contributed by the proposed Dehy Facility was calculated as a function of frequency from estimated octave-band sound power levels (PWLs) for each significant sound source associated with the proposed units. The following summarizes the analysis procedure: Initially, unweighted octave-band PWLs for each noise source (without noise control) were

determined from actual sound measurements performed by H&K on similar equipment and/or obtained from the equipment manufacturer.

Then, expected noise reductions in dB per octave-band frequency due to any designated noise control measures for each source were subtracted from the estimated PWL.

Next, octave-band SPLs for each source (with noise control) were determined by compensating for sound attenuation due to propagation (hemispherical radiation) and atmospheric sound absorption.

Shielding from buildings, terrain or foliage has been conservatively ignored. Finally, the estimated octave-band SPLs for each source (with noise control and other

sound attenuation effects) were corrected for A-weighting, and the total SPLs of all sound sources were logarithmically summed and corrected for A-weighting to provide the estimated A-wt. sound level contributed at the specified distance(s) by the proposed replacement compressor unit.

National Fuel Gas Hoover & Keith, Inc. Wheatfield Dehydration Facility – Northern Access 2016 Project RN 3168 / JN 4870 APPENDIX D – Analysis Methodology for Construction Noise (11/03/15)

D-1

DESCRIPTION OF THE CONSTRUCTION NOISE ANALYSIS METHODOLOGY AND THE SOURCE OF SOUND DATA

Equipment Est'd A-Wt. Resulting A-Wt. Assumed Max. Est'd Max. A-Wt.

Type of Power Rating Est'd Number Sound Level at PWL of Single No. Operating PWL or Sound

Equipment or Capacity Required 50 Ft.: Note (1) Piece of Equip. at One Time Level of Equip.

Diesel Generator 250 to 400 HP 1 to 2 81 dBA 113 dBA 1 113Bulldozer 250 to 700 HP 1 to 2 85 dBA 117 dBA 1 117Grader 450 to 600 HP 1 to 2 85 dBA 117 dBA 1 117Backhoe 130 to 210 HP 1 to 2 80 dBA 112 dBA 1 112Front End Loader 150 to 250 HP 1 to 2 85 dBA 117 dBA 1 117Truck Loaded 40 Ton As needed 82 dBA 115 dBA 1 115

Est'd Total Maximum A-Wt. PWL (dBA) of All Construction Site Equipment 123 Calc'd

Atten. (dB) due to Hemispherical Sound Propagation (2450 Ft.): Note (2) -65 Ldn

Est'd Attenuation (in dB) due to Air Absorption and/or Foliage: Note (3) -10 Note (4)

Est'd Sound Level (dBA) at the Closest NSA Considering a 48 48Maximum Number of Equipment Operating at One Time dBA dBA

Table J: Wheatfield Dehy (NY): Est'd Sound Contribution at the Closest NSA (i.e., NSA #3; approximately2,450 ft. N of Site Center) during Peak Construction Activity

Note (1): Noise Emission Levels of construction equipment based on an EPA Report (meas'd sound data for a railroadconstruction project) and measured sound data in the field by H&K or other published sound data.

Note (2): Noise attenuation due to hemispherical sound propagation: Sound propagates outwards in all directions(i.e., length, width, height) from a point source, and the sound energy of a noise source decreases withincreasing distance from the source. In the case of hemispherical sound propagation, the source is locatedon a flat continuous plane/surface (e.g., ground), and the sound radiates hemispherically from the source.

The following equation is the theoretical decrease of sound energy when determining the resulting SPL ofa noise source at a specific distance (“r”) of a receiver from a source sound power level (PWL):

Decrease in SPL (“hemispherical propagation”) from a noise source = 20*log(r) – 2.3 dB, where “r” isdistance of the receiver from the noise source. For example, if the distance "r" is 1900 feet between thesite and closest NSA, the “hemispherical propagation” = 20*log(2450) – 2.3 dB = 65 dB.

Note (3): Noise attenuation due to air absorption & foliage: Air absorbs sound energy, and the amount of absorption("attenuation") is dependent on temperature and relative humidity (R.H.) of the air and the frequency of sound.For standard day conditions (i.e., no wind, 60 deg. F. and 70% R.H.), the attenuation due to air absorption forthe medium frequency” (i.e., 1000 Hz O.B. SPL) is approximately 1.5 dB per 1,000 feet. In addition, foliagesuch as forest/trees between the Station site and nearby NSAs can have a sound attenuation effect dependingon the amount/thickness of the foliage.

Note (4): Calc'd Ldn equal to the est'd A-wt. sound level since construction activities will occur only during daytime.

National Fuel Gas Hoover & Keith, Inc. Wheatfield Dehydration Facility – Northern Access 2016 Project RN 3168 / JN 4870 APPENDIX E - Acoustical Terminology (11/03/15)

E-1

Summary of Typical Metrics for Regulating Environmental Noise & Acoustical Terminology Discussed in the Report (1) Decibel (dB): A unit for expressing the relative power level difference between acoustical

or electrical signals. It is ten times the common logarithm of the ratio of two related quantities that are proportional to power. When adding dB or dBA values, the values must be added logarithmically. For example, the logarithmic addition of 35 dB plus 35 dB is 38 dB.

(2) Human Perception of Change in Sound Level

A 3 dB change of sound level is barely perceivable by the human ear A 5 or 6 dB change of sound level is noticeable If sound level increases by 10 dB, it appears as if the sound intensity has doubled.

(3) A-Weighted Sound Level (dBA): The A-wt. sound level is a single-figure sound rating,

expressed in decibels, which correlates to the human perception of the loudness of sound. The dBA level is commonly used to measure industrial and environmental noise since it is easy to measure and provides a reasonable indication of the human annoyance value of the noise. The dBA measurement is not a good descriptor of a noise consisting of strong low-frequency components or for a noise with tonal components.

(4) Background or Ambient Noise: The total noise produced by all other sources associated with a given environment in the vicinity of a specific sound source of interest, and includes any Residual Noise.

(5) Sound Pressure Level (Lp or SPL): Ten times the common logarithm to the base 10 of

the ratio of the mean square sound pressure to the square of a reference pressure. Therefore, the sound pressure level is equal to 20 times the common logarithm of the ratio of the sound pressure to a reference pressure (20 micropascals or 0.0002 microbar).

(6) Octave Band Sound Pressure Level (SPL): Sound is typically measured in frequency

ranges (e.g., high-pitched sound, low-pitched sound, etc.) that provides more meaningful sound data regarding the sound character of the noise. When measuring two noise sources for comparison, it is better to measure the spectrum of each noise, such as in octave band SPL frequency ranges. Then, the relative loudness of two sounds can be compared frequency range by frequency range. As an illustration, two noise sources can have the same dBA rating and yet sound completely different. For


E-2

example, a high-pitched sound concentrated at a frequency of 2000 Hz could have the same dBA rating as a much louder low-frequency sound concentrated at 50 Hz.

(7) Daytime Sound Level (Ld) & Nighttime Sound Level (Ln): Ld is the equivalent A-weighted sound level, in decibels, for a 15 hour time period, between 07:00 to 22:00 Hours (7:00 a.m. to 10:00 p.m.). Ln is the equivalent A-weighted sound level, in decibels, for a 9 hour time period, between 22:00 to 07:00 Hours (10:00 p.m. to 7:00 a.m.).

(8) Equivalent Sound Level (Leq): The equivalent sound level (Leq) can be considered an

average sound level measured during a period of time, including any fluctuating sound levels during that period. In this report, the Leq is equal to the level of a steady (in time) A-weighted sound level that would be equivalent to the sampled A-weighted sound level on an energy basis for a specified measurement interval. The concept of the measuring Leq has been used broadly to relate individual and community reaction to aircraft and other environmental noises.

(9) Day-Night Sound Level (Ldn): The Ldn is an energy average of the measured daytime Leq

(Ld) and the measured nighttime Leq (Ln) plus 10 dB. The 10-dB adjustment to the Ln is intended to compensate for nighttime sensitivity. As such, the Ldn is not a true measure of the sound level but represents a skewed average that correlates generally with past sound surveys which attempted to relate environmental sound levels with physiological reaction and physiological effects. For a steady sound source that operates continuously over a 24-hour period and controls the environmental sound level, an Ldn is approx. 6.4 dB above the measured Leq.

(10) Sound Level Meter (SLM): An instrument used to measure sound pressure level, sound level, octave-band SPL, or peak sound pressure level, separately or in any combinations thereof. The measured weighted SPL (i.e., A-Wt. Sound Level or dBA) is obtained by the use of a SLM having a standard frequency-filter for attenuating part of the sound spectrum.


E-3

SOUND LEVELS FOR TYPICAL ACTIVITIES REFERENCE AND COMMUNITY RESPONSESSubjective Human Home and Industrial dBA Community and Traffic Reference Community

Response and (Indoor Noise) Scale (Outdoor Noise) Loudness Reaction ToConversation (Level) Outdoor Noise

-- 140 -- Aircraft CarrierThreshold of Pain Military Jet Aircraft

-- 130 --Large Siren at 100 Ft.

Jet Takeoff at 200 Ft. 16 TimesRock Band (Max.) -- 120 -- as Loud

Threshold of Thunderstorm ActivityDiscomfort Discotheque (Max.) 8 Times

-- 110 -- Elevated Train as LoudSymphonic Music (Max.)

Maximum Vocal Effort Auto Horn at 5 Ft. 4 TimesIndustrial Plant -- 100 -- as Loud

Very Loud Compacting Trash TruckNewspaper Printing Rm. 2 Times

Shouting in Ear -- 90 -- Heavy Truck at 25 Ft. as Loud Vigorous ActionFood Blender and Law SuitsSymphonic Music (Typ.) Motorcycle at 25 Ft. Reference

Shouting -- 80 -- Loudness Threats ofGarbage Disposal Small Truck at 25 Ft. Legal Action

Very Annoying Alarm Clock Heavy Traffic at 50 Ft. Appeals to Officials-- 70 -- 1/2 as Loud Widespread

Moderately Loud Vacuum Cleaner Avg. Traffic at 100 Ft. ComplaintsElectric Typewriter

Normal Conversation -- 60 -- 1/4 as Loud Sporadic ComplaintsAir Conditioner at 20 Ft.

Light Traffic at 100 Ft. No Reaction,Typical Office -- 50 -- 1/8 as Loud Although Noise

Quiet is NoticeableLiving Room Typical Suburban AreaBedroom -- 40 --

BirdsongVery Quiet Library

-- 30 --Soft Whisper Broadcasting Studio Rural Area

Just Audible-- 20 --

Threshold-- 10 -- of Hearing

Hoover & Keith Inc. (Consultants in Acoustics) 11391 Meadowglen, Suite D Houston, Texas 77082 -- 0 --

-end of report-

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