baseline noise report - scottishpower

APPENDIX F

BASELINE NOISE REPORT

APPENDIX FBASELINE NOISE REPORT

Damhead Creek 2 – ES Volume 2June 2009

F BASELINE NOISE REPORT

Contents Summary

A Baseline Noise Report was prepared for Damhead Creek 2. This is presented inthis Appendix in:

F.1 Baseline Noise Report

APPENDIX FBASELINE NOISE REPORT

Damhead Creek 2 – ES Volume 2June 2009

F.1 Baseline Noise Report

SCOTTISH POWER (DCL) LTD

DAMHEAD CREEK 2BASELINE NOISE REPORT

December 2007

Prepared byParsons Brinckerhoff LtdQueen Victoria HouseRedland HillBristolBS6 6US

Prepared forScottishPower (DCL) LtdDamhead Creek Power StationKingsnorth, Hoo St Werburgh,Rochester, KentME3 9TX

Report Title : Damhead Creek 2Baseline Noise Report

Job No : 62725A

CONTENTS

Page

1 INTRODUCTION 21.1 Background 21.2 Site Description 21.3 Legislative Guidance 2

2 METHODOLOGY 22.1 General 22.2 Noise Sensitive Receptors 32.3 Background Monitoring 3

3 SURVEYS UNDERTAKEN 43.1 24-Hour Control 43.2 Spot Measurements 4

4 BASELINE RESULTS 44.1 24-Hour Control 44.2 Spot Measurements 5

REFERENCES: 6

APPENDIX 1 7

APPENDIX 2 8

APPENDIX 3 9

APPENDIX 4 10

APPENDIX 5 11

Damhead Creek 2Baseline Noise Report

Damhead Creek 2 Prepared by Parsons Brinckerhoff LtdDecember 2007 Page 1 for Scottish Power (DCL) Ltd

EXECUTIVE SUMMARY

Parsons Brinckerhoff Ltd (PB) has been commissioned by Scottish Power Ltd to undertake a surveyto quantify the existing background noise levels in the area of the proposed Damhead Creek 2 PowerStation.

Measurements to quantify noise levels have been undertaken on the northern boundary of theproposed site and at nine of the nearest noise sensitive receptors.

Noise from both the existing Damhead Creek CCGT Power Station and the existing Kingsnorth PowerStation was audible at all of the noise sensitive receptor locations with the exception of themeasurements taken at Sturdee Cottages.

Noise from the auxiliary plant supplying Kingsnorth power station with coal was audible at most NSRlocations.

All Noise Sensitive Receptor locations were affected by aircraft noise.



1 INTRODUCTION

1.1 Background

1.1.1 ScottishPower (DCL) Limited (ScottishPower) proposes to construct and operate aCombined Cycle Gas Turbine (CCGT) Power Station (Damhead Creek 2). DamheadCreek 2 will constitute Phase 2 of the Damhead Creek Power GenerationDevelopment, Phase 1 of which is already in existence (the existing Damhead CreekCCGT Power Station) on the Hoo Peninsula, Kent.

1.1.2 Parsons Brinckerhoff Ltd. (PB) has been commissioned by ScottishPower toundertake a baseline noise survey of the area to quantify the existing noise levels atthe nearest noise sensitive receptors. This report details the approach and findings.

1.2 Site Description

1.2.1 The Damhead Creek 2 site is located on land immediately adjacent to the existingDamhead Creek CCGT Power Station that was commissioned in 2001. It liesapproximately 3 km south-east of the A228, which connects the A2/M2 with the Isle ofGrain, 9 km north-east of the city of Rochester and lies on the southern edge of thetongue of land between the Thames and Medway estuaries known as the HooPeninsula. The village of Hoo St Werburgh, the nearest settlement, lies 3 km to thewest between the coast and A228.

1.2.2 To the north and west of the Damhead Creek 2 site lies the Kingsnorth Business Parkand to the south is the existing Kingsnorth Power Station. Land to the north east ofthe Damhead Creek 2 site is filled with pulverised fuel ash and is designated as afuture development area under the Medway Local Plan. Much of this land is nowencompassed by two outline planning applications to Medway Council for a businessdistribution and storage facility proposed by the Goodman Group that will include upto eight storage warehouses and associated infrastructure.

1.2.3 The Damhead Creek 2 site adjoins an extensive area of ecological mitigation landwhich has been established and maintained as part of the Damhead Creek PowerGeneration Development.

1.3 Legislative Guidance

1.3.1 The guidance laid out in BS 7445:1991 “Description and Measurement ofEnvironmental Noise” Parts 1 to 3 BSI, has been adhered to during the surveysundertaken. BS 7445 defines and prescribes best practice during the recording andreporting of environmental noise. It is inherently applied in all instances when makingenvironmental noise measurements.

2 METHODOLOGY

2.1 General

2.1.1 A background noise survey has been undertaken to quantify the existing noise levelsat and around the existing Damhead Creek CCGT Power Station. The survey itselfincluded the following measurement techniques:



A sound level meter was left unattended on the Damhead Creek 2 site for aperiod of 72-hours to establish the variation in noise levels over this period

Spot measurements were taken at nine Noise Sensitive Receptors near toDamhead Creek 2.

2.1.2 A glossary of acoustics terminology is provided in Appendix 1.

2.2 Noise Sensitive Receptors

2.2.1 The Noise Sensitive Receptors (NSR’s) that have been identified are as follows:

Tudor Farm,

Polly Adams Cottage

Riverview Cottage

Tunbridge Hill

Whitehall Farm

Beluncle Farm

Sturdee Cottages

Eschol Lane / Jacobs Lane

Nature Study Area

Market Garden / Dog Kennels

2.3 Background Monitoring

2.3.1 All noise monitoring was conducted in accordance with the guidance set out in BS7445: 1991*. Measurements were made using Class 1 Sound Level Meters, whichwere calibrated and checked before and after each measurement period, with nochange in level noted. The annual calibration certificates for the meters used areprovided in Appendix C, which also shows the serial numbers of all the equipmentused. Microphones were placed 1.2 - 1.5m above the ground, and at least 1.5m fromany reflective surface. Note that the A-weighted frequency network and Fast (F) timeweighting was used for all measurements.

2.3.2 Measurements took place over a typical weekday period between the 27th and 30th ofNovember 2007. Weather conditions were conducive to successful monitoring, withzero precipitation and wind speeds less than 5ms-1. The ambient temperature wasbetween 5°C and 10°C during the whole survey. A wind shield was used to minimisethe effects of wind noise.

2.3.3 The site engineer was Philip Jordan (AMIOA) of PB.



3 SURVEYS UNDERTAKEN

3.1 24-Hour Control

3.1.1 A sound level meter (Control) was left unattended for a period of 72-hours. The soundlevel meter was left in a weatherproof case with the external microphone at a heightof 1.5m above ground level. The meter was set to log the following overall statisticalparameters every 5 minutes: LA90, LAmax, LAeq.

3.1.2 The Control was located at the north perimeter of the Damhead Creek 2 site next tothe fence. The control location is shown in Figure 1, Appendix 2.

3.2 Spot Measurements

3.2.1 Four measurements were taken during daytime and night-time periods with twomeasurements being taken during the evening period. All measurements were 10-minutes long and were synchronised with the control measurements. Measurementswere taken in the following periods.

Daytime 0700 – 1800

Evening 1900 – 2300

Night-time 0000 – 0500

3.2.2 The following statistical parameters were recorded in third octave bands, LA10, LA90,LAmax, LAmin, LAeq. Measurements were taken at all 10 NSR with the exception ofWhitehall Farm.

3.2.3 The measurement locations are illustrated in Figure 1, Appendix 2.

4 BASELINE RESULTS

4.1 24-Hour Control

4.1.1 The variation in noise levels of the site have been quantified over a 72-hour period,the full results of the control measurements are presented in the 72-hour ControlChart, Appendix D. A summary of the 24-hour measurements is presented in Table 1.

PeriodLAeq LA90

0700 - 2300 61 602300 - 0700 59 58

Table 1: Summary of Control Data

4.1.2 Noise levels at the control measurement location were dominated by noise from theexisting Damhead Creek CCGT Power Station.



4.1.3 Noise levels were also affected by plant noise from the coal fields to the south of theproposed site.

4.1.4 The lowest LAeq and LA90 measured were during the night-time period on 28th

November 2007. The existing Damhead Creek CCGT Power Station was operating atthe minimal load at that moment in time.

4.2 Spot Measurements

4.2.1 The full set of results for the spot measurements taken are shown in the NoiseMonitoring Forms in Appendix 5. A summary of the measurements taken at each spotlocations are presented in Table 2.

LowestMeasurement Day Evening Night

Location LAeq LA90 LAeq LA90 LAeq LA90

1 40 37 41 37 37 362 46 37 45 37 38 373 55 39 37 35 41 355 46 41 43 39 41 376 62 42 58 43 43 357 58 44 59 42 42 338 46 42 40 38 34 339 43 40 44 39 40 35

10 43 39 42 39 40 38Table 2: Summary of Lowest Spot Measurements

4.2.2 Noise from both power stations was audible at all measurement locations with theexception of measurement location 7, Sturdee Cottages.

4.2.3 Auxiliary plant used to supply the existing Kingsnorth power station with coal wasaudible at most NSR locations.

4.2.4 Noise levels at measurement locations 6 and 7 were dominated by noise from roadtraffic travelling along Stoke Road during most daytime and evening measurements.

4.2.5 Noise levels at measurement location 2 were affected by noise from a nearbysubstation.

4.2.6 All measurement locations were affected by aircraft noise throughout the survey.



REFERENCES:

* BS 7445: 1991 “Description and Measurement of Environmental Noise" Parts 1 to 3, BSI

APPENDIX 1

Glossary of Acoustics Terminology

APPENDIX A: GLOSSARY OF ACOUSTICS TERMINOLOGY Decibel (dB) The decibel scale is used in relation to sound because it is a logarithmic rather

than a linear scale. The decibel scale compares the level of a sound relative to another. The human ear can detect a wide range of sound pressures, typically between 2x10-5 and 200 Pa, so the logarithmic scale is used to quantify these levels using a more manageable range of values.

Sound Pressure Level (SPL)

The Sound Pressure Level has units of decibels, and compares the level of a sound to the smallest sound pressure generally perceptible by the human ear, or the reference pressure. It is defined as follows: SPL (dB) = 20 Log10(P/Pref) where P = Sound Pressure (in Pa) Pref = Reference Pressure 2x10-5 Pa An SPL of 0dB suggests the Sound Pressure is equal to the reference pressure. This is known as the threshold of hearing. An SPL of 140dB represents the threshold of pain.

Loudness The loudness of a sound is subjective, and differs from person to person. The human ear perceives loudness in a logarithmic fashion, hence the suitability of the decibel scale. Generally, a perceived doubling or halving of loudness will correspond to an increase or decrease in SPL of 10dB. Note that a doubling of sound energy corresponds to an increase in SPL of only 3dB.

Sound Power Level (SWL)

The Sound Power Level defines the rate at which sound energy is emitted by a source, and is also expressed in dB. It is defined as follows: SWL (dB) = 10 Log10(W/Wref) where W = Sound Power (in Watts) Wref = Reference Power 1 picoWatt

A-Weighting The human ear can detect a wide range of frequencies, from 20Hz to 20kHz, but it is more sensitive to some frequencies than others. Generally, the ear is most sensitive to frequencies in the range 1 to 4 kHz. The A-weighting is a filter that can be applied to measured results at varying frequencies, to mimic the frequency response of the human ear, and therefore better represent the likely perceived loudness of the sound. SPL readings with the A-weighting applied are represented in dB(A).

Equivalent Continuous Level (Leq,T)

The Equivalent Continuous Level represents a theoretical continuous sound, over a stated time period, T, which contains the same amount of energy as a number of sound events occurring within that time, or a source that fluctuates in level. For example, a noise source with an SPL of 80 dB(A) operating for two hours during an eight-hour working day, has an equivalent A-weighted continuous level over eight hours of 74 dB, or LAeq,8hrs = 74 dB. The time period over which the Leq is calculated should always be stated.

Maximum Sound Level (Lmax)

The maximum sound level, Lmax (or LAmax if A-weighted) is the highest SPL that occurs during a given event or time period.

Minimum Sound Level (Lmin)

Similarly, the minimum sound level, Lmin (or LAmin if A-weighted) is the lowest SPL that occurs during a given event or time period.

L90 or LA90 and other percentile measures

This represents the SPL which is exceeded 90% of the time, expressed in dB or dB(A). LA90 is used to quantify background noise levels (see below). Other percentiles exist and are used for various types of noise assessment. These include L01, L10, L50, L99.

Noise A noise can be described as an unwanted sound. Noise can cause nuisance.

Ambient Noise The totally encompassing sound in a given situation, at a given time, including noises from any source in any direction.

Specific Noise A component of the ambient noise, associated with the specific source under investigation.

Initial Noise Ambient prevailing noise in an area before any changes to the existing noise climate

Residual Noise This is the ambient noise minus the specific noise, i.e. the remaining noise when the specific noise source is removed.

Background Noise This is defined as the LA90 of the residual noise.

Noise Sensitive Receptors (NSR's)

Any identified receptor likely to be affected by noise. These are generally human receptors, which may include residential dwellings, work places, schools, hospitals, and recreational spaces.

Octave In reference to the frequency of a sound, an octave describes the difference between a given frequency and that which is double that frequency, e.g. 125Hz to 500Hz, or 4kHz to 8kHz.

Octave/Third Octave Bands

A sound made up of more than one frequency can be described using a frequency spectrum, which shows the relative magnitude of the different frequencies within it. The possible range of frequencies is continuous, but can be split up into discrete bands, often an octave or third-octave in width. Each octave band is referred to by its centre frequency, generally 63Hz, 125Hz, 250Hz, 500Hz, 1kHz etc.

Point Source A theoretical source of sound, with zero size and mass, often used as an approximation to model small sources. Sound from a point source radiates spherically in all directions.

Line Source A theoretical source of sound, with length only, often used to model long, thin sound sources, such as roads.

Area source A real or theoretical source that radiates as a plane. Sound from an area source radiates plane waves rather than spherical waves, particularly if the area source is large relative to the wavelength of the sound produced.

APPENDIX 2

Measurements Location Map

Noise Monitoring Locations, Damhead Creek 2 Power Station

3

5

6

8

10

Location of proposedCCGT plant

Residential Monitoring Location

Long termMonitoring Location

9

A

1

2

7

APPENDIX 3

Calibration Certificates

CERTIFICATE OF CALI BRATION ISSUED BY AV CALIBRATION LTD

Date of issue 31 January 2007 Certificate No 02847

England Telephone (01 462) 638600 Fax (01 462) 638601 E-mail [email protected]

AV Calibration Ltd 13c Old Bridge Way

CLIENT Acoustics Noise & Vibration Ltd Beaufort Court 17 Roebuck Way Milton Keynes MK5 8HL

Shefford Bedfordshire SG17 5HQ

F.A.O. John Gregory

Page 1 of 2 pages

REF. Order No 2007005 Job No UKAS07/01026/02

DATE OF RECEIPT 24 January 2007

PROCEDURE AV Calibration Engineer's Handbook, Section 2

IDENTIFICATION Sound calibrator Rion type NC-74 serial number 34851881, with one-inch housing and adapter type NC-74-002 for half-inch microphone.

CALIBRATED ON 30 January 2007

PREVIOUS Calibrated on 19 December 2005 CALIBRATION Certificate No 02171 issued by UKAS laboratory No 0653

This certificate is issued in accordance with the laboratory accreditation requirements of the United Kingdom Accreditation Service. It provides traceability of measurement to recognised national standards, and to units of measurement realised at the National Physical Laboratory or other recognised national standards laboratories. This certificate mav not be reoroduced other than in full. exceot with the orior written aooroval of the issuina laboratorv.

CERTIFICATE OF CALIBRATION ISSUED BY AV CALIBRATION LTD

Date of issue 13 February 2007 Certificate No 02867

b

CLIENT Acoustics Noise & Vibration Ltd Beaufort Court 17 Roebuck Way Milton Keynes Buckinghamshire MK5 8HL

AV Calibration Ltd 13c Old Bridge Way

F.A.O. John Gregory

Shefford Bedfordshire SG17 5HQ England Telephone (01 462) 638600 Fax (01 462) 638601 E-mail [email protected]

REF.

Page 1 of 8 pages

Approved Signato G.Parry

Order No 2007005 Job No UKAS07/02040/01

DATE OF RECEIPT 6 February 2007

PROCEDURE AV Calibration Engineer's Handbook, Section 3: verification of sound level meters to BS 7580:Part 1 : 1997

IDENTIFICATION Sound level meter Rion type NA-27 [serial no. 10832091] connected via an extension lead type EC-04 and preamplifier type NH-20 [serial no. 463001 to a half-inch microphone type UC-53A [serial no. 3048981 fitted with a foam windshield type WS-02. Associated calibrator Rion type NC-74 [serial no. 348518811 with one-inch housing and adapter type NC-74-002 for half-inch microphone.

CALIBRATED ON 13 February 2007

PREVIOUS Calibrated on 21 January 2005 CALIBRATION Certificate No 01 609 issued by UKAS laboratory No 0653

This certificate is issued in accordance with the laboratory accreditation requirements of the United Kingdom Accreditation Service. It provides traceability of measurement to recognised national standards, and to units of measurement realised at the National Physical Laboratory or other recognised national standards laboratories. This certificate may not be reproduced other than in full, except with the prior written approval of the issuing laboratory.

u M e a s u r e m e n t S y s t e m s

CERTIFICATE OF CALIBRATION

Certificate Number CAL040613 Date of Issue 25 April 2006 Customer Parsons Brinckerhoff Ltd

Manufacturer TY pe SLM Calibrator Rion NC-74

Serial Number 00830766

This equipment has been calibrated and tested for compliance with Manufacturer's Performance Specifications.

Notes

Conditions

Atmospheric Pressure 100.46 kPa Temperature 21.7 "C Relative Humidity 41.3 %

ANV Measurement Systems' Calibration Laboratory electroacoustic test equipment is fully traceable to national standards. Additional electronic and ancillary equipment used in the procedures has been calibrated to a certified degree of accuracy that ensures that any additional uncertainties are minimal.

Tests were carried out in controlled environmental conditions to the extent that extraneous environmental factors will have had no substantial effect on the measured parameters in comparison to the tolerances required to unequivocally determine compliance with the manufacturer's specifications.

The total expanded measurement uncertainties associated with the calibration equipment and procedures provide a confidence of approximately 95% in the results. The assessment of uncertainty has been carried out in accordance with national and international guidance upon the calculation of uncertainties in metrology.

ANV Measurement Systems recommended calibration interval is 12 months.

Signed.. flv . . . . ., .. . . ..... ..... .... . D I e c ~ e Position.. . . . . . . . . . . . . . . . . . . . . . . . oate.2s.,/.+ IP.6.

ACOUSTICS NOISE AND VIBRATION LIMITED. REGISTERED IN ENGLAND NO. 3549028. REGISTERED OFFICE AS ABOVE.

M e a s u r e m e n t S y s t e m s

CERTIFICATE OF CALIBRATION

Certificate Number CAL020631 Date of Issue 27 February 2006 Customer Parsns Brinkerhoff Limited

Manufacturer TY pe Serial Number Sound Level Meter Rion NA-27 00621 81 7 Pre Amplifier Rion NH-20 2551 7 Microphone Rion UC-53A 102652

This equipment has been calibrated and tested for compliance with Manufacturer's Performance Specifications.

Notes

Conditions Measured Value

Atmospheric Pressure 100.8 kPa Temperature 21.3 "C Relative Humidity 31.3 %

ANV Measurement Systems' Calibration Laboratory electroacoustic test equipment is fully traceable to national standards. Additional electronic and ancillary equipment used in the procedures has been calibrated to a certified degree of accuracy that ensures that any additional uncertainties are minimal.

Tests were carried out in controlled environmental conditions to the extent that extraneous environmental factors will have had no substantial effect on the measured parameters in comparison to the tolerances required to unequivocally determine compliance with the manufacturer's specifications.

The total expanded measurement uncertainties associated with the calibration equipment and procedures provide a confidence of approximately 95% in the results. The assessment of uncertainty has been carried out in accordance with national and international guidance upon the calculation of uncertainties in metrology.

ANV Measurement Systems recommended calibration interval is 12 months.

Dl KA3C Position ... .. . . . . . . . . .. .. . .. .. .. Da te .~3 /2 - / 0 .6 .

HASTINGS HOUSE, AUCKLAND PARK, MILTON KEYNES, MKI IBU St 01908642846 El 01908642814

infoanoise-and-vibration.co.uk L! www.noise-and-vibration.co.uk - -- - - - -

ACOUSTICS NOISE AND VIBRATION LIMITED. REGISTERED IN ENGLAND NO. 3549028. REGISTERED OFFICE AS ABOVE.

APPENDIX 4

72-Hour Control Chart

72-Hour Control Chart

50

55

60

65

70

75

80

13:3

0

15:3

0

17:3

0

19:3

0

21:3

0

23:3

0

01:3

0

03:3

0

05:3

0

07:3

0

09:3

0

11:3

0

13:3

0

15:3

0

17:3

0

19:3

0

21:3

0

23:3

0

01:3

0

03:3

0

05:3

0

07:3

0

09:3

0

11:3

0

13:3

0

15:3

0

17:3

0

19:3

0

21:3

0

23:3

0

01:3

0

03:3

0

05:3

0

07:3

0

09:3

0

11:3

0

Time

Noi

se L

evel

(dB

)

LA90LAeq

APPENDIX 5

Noise Monitoring Form

Project: Job Number: Location:

Equipment: Engineer:Pre-Calibration Level: General Weather Description:Post-Calibration Level:

Speed (m/s)

Direction from

27-11-2007 14:00 10 14:10 <1 SW 10 61 36 40 41 37

27-11-2007 21:00 10 21:10 <1 SW 10 59 35 42 45 37

28-11-2007 07:45 10 07:55 <4 SW 10 60 38 45 46 4328-11-2007 10:10 10 10:20 <4 SW 10 75 38 51 48 42

29-11-2007 03:10 10 03:20 <2 SW 9 57 34 39 40 36

29-11-2007 16:40 10 16:50 <1 NE 7 59 35 41 44 4229-11-2007 19:10 10 19:20 <1 NE 6 56 35 41 45 3730-11-2007 00:11 10 00:21 <2 SE 6 55 34 37 38 3630-11-2007 03:45 10 03:55 <4 S 6 56 35 39 40 3730-11-2007 04:35 10 04:45 <5 SW 6 53 36 41 42 38

Lmax LminStart

Power plant noise, Road Traffic and Aircraft NoiseDistant power plant noiseDistant power plant noise, Distant RTN, bleeping from coa

L10 L90 Description of Audible Noise

Distant traffic and aircraft noise. Power plant noise, dog barking.

Beeping from coal field, power plant noise RTNPower plant noise, RTN aircraft and beeping and crashing and banging from coal field.Power plant noise, aircraft and road traffic noise. Beeping from vehicles on coal fields.

62725ADamhead Creek 21 - Tudor Farm

Distant power plant noise.

Statistical Noise Levels / dB(A)

Nov-07

Power plant noise, Road Traffic and Aircraft Noise Power plant noise, Road Traffic and Aircraft Noise

Leq


Measurement Period Weather

Rion NA-2793.9 dB93.9 dB

Philip JordanMild, Dry with low wind Speeds

Wind Temp(ºC) Date Elapsed End

Project: Job Number:Location:



Damhead Creek 2 62725A1 - Tudor Farm Date: Nov-07

Rion NA-27 Philip Jordan93.9 dB Mild, Dry with low wind Speeds93.9 dB



Speed (m/s)

Direction from

27-11-2007 14:25 10 14:35 <1 SW 10 67 36 46 46 3727-11-2007 21:20 10 21:30 <1 SW 10 66 36 45 44 3728-11-2007 08:05 10 08:15 <4 SW 10 63 38 46 48 4228-11-2007 10:30 10 10:40 <4 SW 10 62 38 46 49 4229-11-2007 03:35 10 03:45 <2 SW 9 63 36 39 40 3729-11-2007 17:00 10 17:10 <1 NE 7 66 39 48 51 4329-11-2007 19:30 10 19:40 <1 NE 6 68 37 49 50 3930-11-2007 00:30 10 00:40 <2 SE 6 50 36 38 40 4030-11-2007 03:10 10 03:20 <4 S 6 54 31 38 40 4030-11-2007 04:20 10 04:30 <5 SW 6 53 36 41 42 38

Leq L10 L90 Description of Audible NoiseDate Start Elapsed End

2 - Polly Adams Cottage Date: Nov-07


Damhead Creek 2 62725A

Distant power plant noise

Power plant noise, road traffic and aircraft noise. Sub Power plant noise, road traffic and aircraft noise. Sub Power plant noise, road traffic and aircraft noise. Sub Noise from sub station,. Road traffic and distant power plan

Rion NA-27 Philip Jordan

Distant power plant noiseIncreased power plant noise compared with previous meas

Mild, Dry with low wind Speeds93.9 dB

Measurement Period Weather Statistical Noise Levels / dB(A)

Noise from nearby sub station distant aircraft noiseDistant power plant noise, RTN aircraft and beeping and

93.9 dB

Wind Temp(ºC)

Lmax Lmin

Power plant noise, road traffic and aircraft noise. Sub





Damhead Creek 2 62725A2 - Polly Adams Cottage Date: Nov-07

Rion NA-27 Philip Jordan93.9 dB



Speed (m/s)

Direction from

27-11-2007 14:45 10 14:55 <1 SW 10 76 37 55 51 3927-11-2007 21:40 10 21:50 <1 SW 10 49 34 37 39 3528-11-2007 08:20 10 08:30 <4 SW 10 79 40 58 51 43

28-11-2007 10:55 10 11:05 <4 SW 10 77 39 55 52 4329-11-2007 03:50 10 04:00 <2 SW 9 71 38 47 47 4129-11-2007 16:55 10 17:05 <1 NE 7 77 36 56 51 4229-11-2007 19:45 10 19:55 <1 NE 6 79 38 57 49 4030-11-2007 00:45 10 00:55 <2 SE 6 65 36 48 48 4030-11-2007 04:05 10 04:15 <4 S 6 56 37 41 42 3930-11-2007 04:50 10 05:00 <5 SW 6 59 39 45 47 42

Power plant noisePower plant noise, increased wind speeds.

Power plant noise, dog barking. Dog barking, road traffic and aircraft noise. Road traffic and aircraft noise. Power plant noise.Power plant noise and aircraft noise

RTN and power plant noise dog barking. Power plant noise, road traffic and aircraft noise. Beeping Power plant noise, vehicles on coal field. Road traffic andPeople talking, Dog barking, power plant noise, Road traffic noise.

Leq L10 L90 Description of Audible Noise

WindTemp(ºC)

Lmax LminDate Start Elapsed End



62725ADamhead Creek 23 - Riverview Cottage Date: Nov-07




Speed (m/s)

Direction from


Power plant noise, road traffic and aircraft noise. Power plant noise distant road traffic noisePower plant noise distant road traffic and aircraft noisePower plant noise distant road traffic noise

Power plant noise, aircraft noise and road traffic noiseBird song, aircraft noise, road traffic noise. Power plant noise, distant aircraft noiseRoad traffic and aircraft noise, bird song.

L90 Description of Audible Noise

Power plant noise, beeping from coal field.Power plant noise, difficult to define. Road traffic noise

Wind Temp(ºC)

Lmax LminDate Start Elapsed End

93.9 dB



5 - Stoke Road leading to Whitehall Farm Date: Nov-07Damhead Creek 2 62725A

Leq L10

Rion NA-27 Philip JordanMild, Dry with low wind Speeds93.9 dB


Equipment: Engineer:Pre-Calibration Level: General Weather Description:Post-Calibration Level: 93.9 dB

Rion NA-27 Philip Jordan93.9 dB Mild, Dry with low wind Speeds


Damhead Creek 2 62725A5 - Stoke Road leading to Whitehall Farm Date: Nov-07



Speed (m/s)

Direction from


Power plant noise from both power stationsRTN and power plant noise

Distant RTN Hum from both power stations, RTN and Aircraft noise RTN, aircraft noise and banging and clanging (Coal)Distant RTN hum from kingsnorth, freight train and

RTN and noise from power plants difficult to define. Hum from Kingsnorth and damhead, distant coal storesRTN and Kingsnorth and Damhead Creek, Aircraft noiseNoise from power stations, beeping from diggers and

Leq L10 L90 Description of Audible NoiseWind Temp

(ºC) Lmax LminDate Start Elapsed End


Philip Jordan93.9 dB Mild, Dry with low wind Speeds93.9 dB

Damhead Creek 2 62725A6 - Beluncle Farm Date:


Nov-07

Rion NA-27



93.9 dB Mild, Dry with low wind Speeds


Damhead Creek 2 62725A6 - Beluncle Farm Date: Nov-07




Speed (m/s)

Direction from


Aircraft noise, just hear noise from kingsnorthRTN noise

Distant RTN, wind in bushes. RTN from immediate roads. RTN and Aircraft noiseMinimal RTN, breeze through bushes

RTN Distant and Close RTN, overflying planes. RTN and Aircraft NoiseRTN and Aircraft Noise






Damhead Creek 2 62725A7 - Sturdee Cottages Date: Nov-07

Philip JordanRion NA-2793.9 dB





Damhead Creek 2 62725A7 - Sturdee Cottages Date: Nov-07



Speed (m/s)

Direction from



Damhead Creek 2 62725ANov-078 - Eschol Lane / Jacobs Lane Date:



Date Start Elapsed End L10 L90 Description of Audible NoiseWind Temp

(ºC) Lmax Lmin Leq

Distant RTN, Aircraft

Power plant noise, aircraft noise and noise from 50Hz hum from Kingsnorth power station overflying Noise from kingsnorth Dock. Aircraft Noise

Distant RTN Hum from Kingsnorth power station and aircraftAircraft and Road traffic noise

Distant RTN, Aircraft, Noise from Kingsnorth Dock. RTN and Aircraft noise

Aircraft, postman Kingsnorth hum, kingsnorth dock.



Speed (m/s)

Direction from



Damhead Creek 2 62725A9 - Nature Study Area Date: Nov-07



LminDate Start Elapsed End Leq L10 L90 Description of Audible Noise

Hum from power station. Traffic entering and leaving Kingsnorth hum, aircraft noise RTN and Aircraft noise, HGV's enter/exiting Kingsnorth

Kingsnorth power station hum, vehicles entering and Hum from power station, HGV and light traffic entering RTN and Aircraft noise, buzzing, humming.

Wind Temp(ºC)

Lmax

Distant RTN, aircraft noiseDistant RTN and aircraft noise. Hum from power station Power station hum and aircraft noiseRTN and power station noise wind through bushes



62725A

93.9 dB Mild, Dry with low wind Speeds93.9 dB

9 - Nature Study Area Date: Nov-07



Damhead Creek 2



Speed (m/s)

Direction from



Power plant noise Distant RTN and aircraft noise

Distant Road and aircraft noise Kingsnorth and Dock. Noise from kingsnorth dock, banging. RTN and aircraft Distant RTN, noise from dock, HGV movements aircraftNoise from dock breeze through bushes.

Kingsnorth power station Noise from Kingsnorth power station, Plane and Road Aircraft noise, distant RTN and Kingsnorth power stationAircraft noise, barking dog, beeping, distant RTN




93.9 dB Mild, Dry with low wind Speeds93.9 dB

10 - Market Garden / Dog Kennels Date: Nov-07


Damhead Creek 2 62725A





Damhead Creek 2 62725A10 - Market Garden / Dog Kennels Date: Nov-07

baseline noise report - scottishpower

Documents