Noise impact assessment for the area of the projected wind farm
Süderlügum
Client:
Clients address:
Bürgerwindpark Süderlügum GmbH & Co. KG
Dorfstraße 11 25923 Ellhöft
Report no.:
GLGH-4275 12 09152 271-R-0001-A
Location:
Süderlügum
Project no.:
4275 12 09152 271
Status:
Final version
Order date:
Contractor:
2012-03-29
GL Garrad Hassan Deutschland GmbH
Sommerdeich 14 b
25709 Kaiser-Wilhelm-Koog
Author:
Dipl.-Ing. Jörg Dedert
(Project engineer)
Approved by:
Dipl.-Ing. Klaus Buchmann
(Head of department Acoustics & Inspections)
Kaiser-Wilhelm-Koog, 2013-12-09
10.12.2013
Dipl.-Ing. Klaus Buchmann
09.12.2013
Dipl.-Ing. Jörg Dedert
GLGH-4275 12 09152 271-R-0001-A
Noise impact assessment for the area of the projected wind farm Süderlügum
Important notice
1.
Extracts may be copied from this report only with the written consent of GL Garrad Hassan Deutschland
GmbH. It comprises a total of 16 pages including appendices.
2.
All results given in this report relate only to the specified test object in its constellation and under the
conditions prevailing during the assessment.
Revision History
Issue
Issue date
Summary
A
2013-12-09
Original issue (electronic version only)
GL Garrad Hassan Deutschland GmbH
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GLGH-4275 12 09152 271-R-0001-A
Noise impact assessment for the area of the projected wind farm Süderlügum
Table of contents
1
2
3
4
5
6
7
8
Introduction
Wind turbines taken into account
Other sources
Chosen points of noise impact
Calculation and results
Reflection
Review of results
List of references
4
4
5
5
6
6
6
7
Annex
Annex 1:
Map of the area
8
Annex 2:
Noise sources
9
Annex 3:
Immission objects and total noise level generated by existing wind turbines
10
Annex 4:
Immission objects and total noise level generated by existing and new wind turbines
11
Annex 5:
Individual noise levels
12
Annex 6:
Contour lines for night time operation of new wind turbines
14
Annex 7:
Contour lines for night time operation of existing wind turbines
15
Annex 8:
Contour lines for night time operation of existing and new wind turbines
16
List of tables
Table 2.1: Technical data of existing and planned wind turbines
GL Garrad Hassan Deutschland GmbH
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5
GLGH-4275 12 09152 271-R-0001-A
1
Noise impact assessment for the area of the projected wind farm Süderlügum
Introduction
The order from Bürgerwindpark Süderlügum GmbH & Co. KG dated 2012-03-29 required GL Garrad Hassan
Deutschland GmbH (GL GH) to determine the noise impact at the relevant immission points (IPs) surrounding the
projected wind turbines (wind turbine generators or WTGs) at Süderlügum wind farm in the administrative district
of North Frisia.
All calculations have been performed according to GL GH management system procedure SVAC-G-PR-001 [4].
The noise propagation calculations documented in this report have been carried out compliant with the German
regulation Technische Anleitung zum Schutz gegen Lärm (TA-Lärm) [1]. For the calculations following
propagation condition are assumed for the turbines under assessment: Wind speed of 10 m/s at a 10 m height
above ground level or 95% of rated power.
2
Wind turbines taken into account
Within the projected area the Bürgerwindpark Süderlügum GmbH & Co. KG plans to install 11 new wind turbines
(WTG) of type SWT 3.0-113 with a hub height of 92,5 m and a rotor diameter of 113 m as well as 1 WTG of type
SWT 3.0-101 with a hub height of 79,5 m and a rotor diameter of 101 m. These turbine types are manufactured
by Siemens.
See table. 2.1 for existing wind turbines in the project area which are labelled with “SV”.
Coordinates of turbine locations were provided by the customer. A graphic overview is included in the annex.
GL Garrad Hassan Deutschland GmbH
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GLGH-4275 12 09152 271-R-0001-A
Noise impact assessment for the area of the projected wind farm Süderlügum
1
2
3
4
5
3
WEA No.
Manufacturer
Type
Hub height
in m
Rated power
PW in kW
Sound power level
LWA in dB
Impulsivity
KI in dB 1
Tonality KT
in dB 2
Sound power level
LWA in dB for noise
reduced operation
Table 2.1: Technical data of existing and planned wind turbines
S_01, S_02 and
S_04 to S_08
as well as S_11 and
S_12
Siemens
SWT 3.0MW-113
92,5
3.000
105,5 3
03
03
S_09 and S_10
Siemens
SWT 3.0MW-113
92,5
3.000
105,5 3
03
03
S_03
Siemens
SWT 3.0MW-101
79,5
3.000
107,0 3
03
03
SV_22 to SV_27
AN Bonus 1.3MW
76
1.300
104,0 5
05
05
SV_28 and SV_30
Siemens
SWT 2.3MW/93
93
2.300
106,0 3, 5
05
05
SV_29
Siemens
SWT 2.3MW/93
93
2.300
106,0 5
05
05
103,0 5
SV_31
Siemens
SWT 2.3MW/93
93
2.300
106,0 5
05
05
105,0 5
SV_32
REpower 6M
100
6.000
107,0 3
03
03
105,0 5
SV_33 and SV_ 34
REpower 6M
100
6.000
107,0 3
03
03
SV 35
Enercon E-101
99
3.000
108,0 3
03
03
101,5 4
according to DIN 45645 [2]
according to recommendations from Arbeitskreis „Geräusche von Windenergieanlagen“ [3]
manufacturer’s warranty
manufacturer's data for noise-reduced operating mode
permissible sound power level including possible surcharge according to building permit
Other sources
A site survey was conducted by Dipl.-Ing. Jörg Dedert on 2012-04-25. All IP were checked for other noticeable
and relevant sound sources like cooling fans. Relevant noises from other sources were not identified during the
course of the survey.
4
Chosen points of noise impact
The surrounding area of the projected wind farm is mainly used as agricultural land. All nearby residential houses
which could be subject to increased noise immission are taken into account as immission points (IP). The
surveyor classified nearby houses as village area or mixed use area according to TA-Lärm. This leads to a
permissible immission level of 45 dB(A) in the night time at these IP.
An overview of all relevant IP is shown in the annex.
GL Garrad Hassan Deutschland GmbH
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Noise impact assessment for the area of the projected wind farm Süderlügum
Calculation and results
The noise immission level is calculated for all chosen IPs. Results are the maximum noise level generated by the
existing turbines as well the new turbines alone. Finally the total noise level generated by existing and new
turbines is calculated.
All results are shown in the annex. All calculations have been performed for all chosen IP.
The projected layout (with given prerequisites) does not lead to an exceedance of permissible noise levels at the
residential buildings near to the new wind farm.
6
Reflection
Based on the layout of the residential buildings around the wind farm increased noise levels caused by reflection
effects are not expected.
7
Review of results
From the point of view of the surveyor an impermissible high disturbance of residents according to TA-Lärm does
not occur under given conditions in the night time if the projected WTGs are able to keep sound power level
within valid range.
GL Garrad Hassan Deutschland GmbH
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Noise impact assessment for the area of the projected wind farm Süderlügum
List of references
1. Sechste Allgemeine Verwaltungsvorschrift zum Bundes-Immissionsschutzgesetz, "TA – Lärm Technische
Anleitung zum Schutz gegen Lärm", 1998-08-26.
2. DIN 45645 T1, "Einheitliche Ermittlung des Beurteilungspegels für Geräuschimmissionen", 1996-07.
3. Empfehlung des Arbeitskreis „Geräusche von Windenergieanlagen“ der Immissionsschutzbehörden und
Messinstitute, "Schallimmissionsschutz im Genehmigungsverfahren von Windenergieanlagen", 1999-10.
4. GL-Garrad Hassan Deutschland GmbH, "SVAC-G-PR-001, Noise Impact Assessment",
Document no. GLGH-4256 11 08316 000-M-0328-B.
(This document is part of the management system of the GL Garrad Hassan Deutschland GmbH. It is
possible to view this document at GL GH.)
GL Garrad Hassan Deutschland GmbH
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GLGH-4275 12 09152 271-R-0001-A
Annex 1:
Noise impact assessment for the area of the projected wind farm Süderlügum
Map of the area
GL Garrad Hassan Deutschland GmbH
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GLGH-4275 12 09152 271-R-0001-A
Annex 2:
Noise impact assessment for the area of the projected wind farm Süderlügum
Noise sources
GL Garrad Hassan Deutschland GmbH
Page 9 of 16
GLGH-4275 12 09152 271-R-0001-A
Annex 3:
Noise impact assessment for the area of the projected wind farm Süderlügum
Immission objects and total noise level generated by existing wind turbines
GL Garrad Hassan Deutschland GmbH
Page 10 of 16
GLGH-4275 12 09152 271-R-0001-A
Annex 4:
Noise impact assessment for the area of the projected wind farm Süderlügum
Immission objects and total noise level generated by existing and new wind turbines
GL Garrad Hassan Deutschland GmbH
Page 11 of 16
GLGH-4275 12 09152 271-R-0001-A
Annex 5:
Noise impact assessment for the area of the projected wind farm Süderlügum
Individual noise levels
GL Garrad Hassan Deutschland GmbH
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GLGH-4275 12 09152 271-R-0001-A
GL Garrad Hassan Deutschland GmbH
Noise impact assessment for the area of the projected wind farm Süderlügum
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GLGH-4275 12 09152 271-R-0001-A
Annex 6:
Noise impact assessment for the area of the projected wind farm Süderlügum
Contour lines for night time operation of new wind turbines
GL Garrad Hassan Deutschland GmbH
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GLGH-4275 12 09152 271-R-0001-A
Annex 7:
Noise impact assessment for the area of the projected wind farm Süderlügum
Contour lines for night time operation of existing wind turbines
GL Garrad Hassan Deutschland GmbH
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GLGH-4275 12 09152 271-R-0001-A
Annex 8:
Noise impact assessment for the area of the projected wind farm Süderlügum
Contour lines for night time operation of existing and new wind turbines
GL Garrad Hassan Deutschland GmbH
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