POLENERGIA SA Ul. Krucza 24/26, 00-526 Warszawa

Ordering Party:

POLENERGIA S.A.

ul. Krucza 24/26, 00-526 Warszawa NIP: 526-18-88-932

Contact person: Basis: Marta PORZUCZEK The order placed on 28/05/2019 e-mail: [email protected] mobile: +48 609 909 702

Subject of the study:

The acoustic audit for the planned D ębsk Wind Farm to the needs of the application to the European Bank for Reconstruction and Development.

Performed by: Checked by: Marcin MARECKI MSc acoustician Jacek SZULCZYK PhD vibroacoustician

June 2019

1. SCOPE OF THE REPORT

The report includes acoustic analysis from the planned D ębsk Wind Farm. The report includes:

a) Presenting the ambient noise levels which have been determined by using real noise measurements which come from existing noise sources (neighbouring wind turbines, local industry and / or services and communication routes),

b) Inventory of sensitive residential areas protected against noise and setting noise limits for them. Noise limits are based on the area inspection of the planned farm and on the basis of the analysis of the existing planning documents,

c) Noise modeling for planned wind turbines, which was shown by means of the noise range for the time of the day and the night time,

d) Calculation of the cumulative effect, i.e. including the already existing wind turbines and the planned D ębsk Wind Farm in the noise modeling,

e) Performing noise calculations for the construction stage of a farm for an exemplary location of a wind turbine.

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2. ANALYSIS OF THE AMBIENT SOUND LEVELS - THE CHARACTERISTIC OF THE ACOUSTIC CLIMATE FOR THE INVESTMENT AREA

The Kuczbork-Osada and Żuromin communes, where the construction of the D ębsk Wind Farm is planned, are rural communes. Within the investment area, farm buildings predominate. The noise in the environment of the areas concerned, is primarily associated with agricultural activity carried out by residents, the highest intensity of which occurs in the spring and summer months when intensive field work is underway. There are also numerous poultry-farming facilities in both communes. The acoustic impact of these facilities on the surrounding environment varies depending on the number of livestock buildings (henhouses), as well as their distance from the acoustically protected building. On the basis of the area inspection, it was found that a small number of breeding buildings is similar to residential buildings, therefore their operation is not a significant acoustic nuisance for residents of neighbouring areas. This fact was also confirmed by acoustic measurements on the premises of the planned farm, the results of which are presented in the further part of the study.

Another source of noise which shapes the acoustic climate of the areas of the planned wind farm in a decisive way, are roads linking individual towns that form the basis of the communes’ transport system. In the northern part of the area of this investment, the provincial road No. 563 is located between the villages of Zielona and Kuczbork.

It should be emphasized that the emission of the noise in the environment and the applicable limits is dependent on the established groups of noise sources. It means that the so-called industrial noise (eg. henhouses, wind turbines, services) has separate noise limits compared to noise which comes from public roads or railways. In other words, both groups of noise sources are subject to separate acoustic evaluation and are regulated by different acceptable sound levels. This is the reason why industrial and communication noise cannot be assessed as a cumulative acoustic impact.

In the north-east and eastward direction of the planned investment, there is Żuromin Wind Farm consisting of 30 Gamesa G90 2.0 MW turbines with 100 m high towers. Some turbines (numbers: 01, 02, 03, 04, 05, 06, 26) , located in the vicinity of the towns of Przyspa and Zielona, shape the acoustic climate in their areas. In addition, in the vicinity of the planned wind farm, there are also single wind turbines: Vestas V90 in the vicinity of Cierpigórz and Enercon E58 in the vicinity of Olszewo. The above mentioned turbines are located within 2000 m of the planned D ębsk Wind

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Farm turbines, therefore they will be taken into account in the acoustic analysis as noise sources that generate cumulative impact in acoustically protected areas. The remaining turbines belonging to FW Żuromin and other single turbines located in the vicinity of the towns of Zielona and Żuromin, are located at a distance of over 2000 m from the turbines of the subject farm and will not be taken into account in the simulation analysis. This is due to the fact that at such a large distance noise generated by wind turbine propellers does not contribute to the resultant sound level with other turbines.

During the visit of the planned wind farm which was on 05.06.2019, measurements of the ambient noise level at five measurement points, which were located near residential buildings, were carried out. Points were selected in locations situated close to the boundaries of the investment area, and, at the same time, in places where the highest impact of noise which comes from existing sources of industrial noise (livestock buildings, wind turbines) was expected. The adopted methodology for determining ambient noise were guidelines covering the measurement of environmental noise in accordance with the Regulation of the Minister of the Environment of 30/14/2014 regarding the requirements for conducting measurements of emission volumes and measurements of the amount of water taken in. Journal of Laws of 2015, item 1542, Annex No. 7 - Reference methodology for periodic measurements of noise in the environment from installations or devices with the exception of impulsive noise. Physical measurements of ambient noise were carried out for the normal operation of the tested noise sources (henhouses, existing turbines) in all 5 measuring points. During the tests, the measuring microphone was located on the border of housing from the side of the noise source and on the recommended height of 4 meters above the ground. The time of ambient background noise analysis for a given measuring point included the required 3 samples, which made it possible to assess the current ambient noise in an reliable way.

It should be emphasized that the purpose of ambient noise measurements was to assess current sound levels from existing noise sources (neighbouring turbines, henhouses, services) and to analyze whether the current ambient noise will affect the accumulation of noise from planned wind turbines.

The obtained sound levels from the ambient noise tests caused that in the further part of the report, acoustic calculations of noise accumulation, which comes from existing turbines and the planned ones within the D ębsk wind farm investment, were carried out. The results of the measurements are presented in the table below.

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Table 1. The results of the background noise measurements in the area of the planned Dębsk wind farm

The Measured level of The measurement Audible sources of noise measurement the ambient noise point address point [dB]

- Noise from a poultry farm located southwards (animals + appliances) P1 Sadowo 4 - Noise from the Gamesa 41,8 G90 wind turbines

- Noise from the Gamesa Zielona, P2 38,8 ul. Obwodowa 9 G90 wind turbines

Przyspa (plot no. - Noise from the Gamesa P3 14, area of G90 wind turbines 43,4 Kuczbork)

- No significant noise sources, Gamesa G90 turbines at a distance of Kuczbork-Wie ś, P4 about 2 km (audible only 31,5 ul. Ogrodowa 23 sounds of nature: crickets, birds)

- Noise from a poultry farm Kliczewo Małe, located in the south-east P5 38,7 ul. Nowa 8 direction

CONCLUSION 1: Based on the real noise measurements, it can be noticed that the current sound levels in the measured points are shaped by existing noise sources (wind turbines, henhouses). Obtained ambient noise levels have become the basis for additional computational analyzes as part of the cumulative effect. It should be also noted that in each of the measurement point the ambient noise level was also composed of nature sounds that could not be eliminated (birds, crickets, barking dogs in the distance, rustle of the trees), and which had an influence on the resultant sound level.

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3. INVENTORY OF SENSITIVE AREAS SUBJECT TO PROTECTION AGAINST NOISE - NOISE LIMITS

Permissible sound levels in the external environment are specified in the Regulation of the Minister of the Environment of June 14, 2007 on permissible noise levels in the environment (Journal of Laws of 2014, item 112 - consolidated text). According to the above regulation, the permissible values of the equivalent sound level A, LAeq T, for noise from facilities and groups of sources other than roads and railway lines are determined in time periods, equal to the 8 least favorable hours of the day, which falls between 6:00 – 22:00 and first the least favorable hour during the night, between 22:00 – 6:00.

The regulation which was mentioned above also defines the categories of areas requiring the acoustic protection.

Table 2. Permissible sound level in the environment (Journal of Laws of 2014, item 112 - consolidated text) Other facilities and activities that are source s of noise

LAeq D [dBA] No. Type of area reference time period LAeq N [dBA] equal to 8 least favorable reference time period hours of the day in equal to 1 least succession favorable night time

a) "A" protection zone of the health resort 1 b) Areas of hospitals outside the city 45 40

a)Areas of single-family housing b) Building areas associated with permanent or temporary stay of children 2 and youth 1) 50 40 c) Areas of social care homes d) Areas of hospitals in cities

a) Areas of multi-family housing and collective residence b) Areas of farm buildings 3 55 45 c) Rest and recreation areas 1) d) Residential and service areas

Areas in the downtown zone of cities 4 over 100,000 residents 2) 55 45

Explanation: 1) In the event of non-use of these areas, according to their function, during the night, there is no acceptable noise level at night. 2) Downtown area of cities over 100 thousand inhabitants is the area of a compact housing with the concentration of administrative, commercial and service facilities. In the case of cities with districts with a population of 100,000 a downtown zone in these districts can be designated, if it is characterized by a dense residential development with a concentration of administrative, commercial and service facilities.

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The planned wind farms will be located in two communes: Kuczbork and Żuromin, between the towns of: Przyspa, Kuczbork, Olszewko, Kliczewo Małe, Kliczewo Du że, D ębsk, Chamsk, Olszewo, Kosewo, Cierpigórz and Zielona, in which there are numerous areas to be protected against noise gathered within the aforementioned village. The function of these areas was determined based on the local inspection and the assessment of the actual land development and the records of the Local Area Development Plans of the municipalities of Kuczbork-Osada and Żuromin and they were assigned the following noise limits at particular times of the day:

− areas of farm buildings

time of the day, L Aeq D = 55 dB night time, L Aeq N = 45 dB

− areas of single-family housing

time of the day, L Aeq D = 50 dB night time, L Aeq N = 40 dB

− areas of buildings associated with permanent or temporary stay of children and youth

time of the day, L Aeq D = 50 dB night time, L Aeq N = 40 dB

Identification of permissible limits was carried out on the basis of the following local law acts: - Resolution No. 224 / XXXII / 17 of the City Council in Żuromin of 4/05/2017, regarding the adoption of a local area development plan for the towns of: Młudzyn, Stare Nadratowo, Rozwozin, Sadowo, Wólka Kliczewska and for parts of B ędzymin, Dębsk, Kliczewo Du że, Kliczewo Małe, Kosewo, Kruszewo, Nowe Nadratowo, Raczyny, Tadajówka, - Resolution No. 289 / XXXIX / 17 of the City Council in Żuromin of 8/11/2017 regarding the adoption of a local area development plan for part of the towns of Poniatowo, Chamsk, Cierpigórz, Brudnice, Franciszkowo and Olszewo, stage 4, in the area of Chamsk, - Resolution No. 293 / XXXIX / 17 of the City Council in Żuromin of 8/11/2017 regarding the adoption of a local area development plan for part of the towns of

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Poniatowo, Chamsk, Cierpigórz, Brudnice, Franciszkowo and Olszewo, stage 5, the area of Olszewo, - Resolution No. XXXII / 205/2010 of the Commune Council in Kuczbowe Osada of 27/09/ 2010 regarding the adoption of the local area development plan for the part of the commune of Kuczbork. Osada - wind farms areas

The following is an example of the locations of typical farm buildings in the area of the planned D ębsk Wind Farm.

Picture 1. Building development in Sadowo 4

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Picture 2. Buildings in Kuczbork Wie ś, 23 Ogrodowa street

Picture 3. Buildings in Kliczewo Małe, 27 Nowa street

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Picture 4. Buildings in Olszewko 42

Picture 5. Buildings in Olszewo, in front of 21 Żuromi ńska street

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Picture 6. Building development in Dębsk, 4 Polna street

Picture 7. Building development in Kliczewo Du że, 7 Wspólna strret (an abandoned building)

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The area inspection and the analysis of the current location of acoustically protected buildings showed that in the area of the village of Olszewko one new residential building was constructed in the first building line compared to the planned wind turbines of the D ębsk farm (the building is being constructed and not yet included in the base maps). The Local Area Development Plan does not apply to the village of Olszewko, therefore the noise limits for this building have been determined after the predominant function, which for the village of Olszewko is a farm building. Additionally, in the area of the building being built, a noise emission control point (PR07) was designated for the simulation analysiss of the planned D ębska farm and as a part of the cumulative effect calculation. A similar situation takes place in the village of Kosewo. A residential building was identified there along the asphalt road (the building is also being constructed). The currently constructed building is not in the first building line, relative to the planned wind turbines. In the area of the new building a noise emission control point No. PR24 has been designated. The PR24 point, however, represents acoustically- protected housing development, which is closer to the designed wind turbines of the Dębsk farm. For the village of Kosewo there is a Local Area Development Plan in which the function of the new building as a farm building has been defined.

CONCLUSION 2: Based on the local inspection on the site of the planned wind farm which took place on June 5, 2019, its agricultural character was confirmed, i.e. the homesteading of acoustically protected areas. In this area, there are numerous farm buildings, livestock buildings and barns. The field vision allowed identification of two new buildings subject to acoustic protection, which were classified as farm buildings. The buildings are located in the villages of Olszewko and Kosowo. Both buildings are being constructed. A feature that could be noticed is that the planned Dębsk Wind Farm area is a compact agricultural development, which is located at the main communication routes of the given towns and villages. For the majority of the nearest buildings subject to acoustic protection, local area development plans are in force, which guarantees the preservation of the established noise limits needed for acoustic assessment of the planned wind farm.

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4. MODELING OF NOISE FOR THE PLANNED D ĘBSK WIND FARM

4.1. ACCEPTED CALCULATION METHODOLOGY

The analysis of the acoustic state of the environment, and in particular the simulation of the sound propagation in the external environment, presented in this study was carried out by using the ver. 4.0.136 CadnaA software from DataKustik GmbH. Forecasting of the noise emission is based on the calculation method recommended for industrial noise in Directive 2002/49 / EC of the European Parliament and the Council of June 25, 2002 described in the Polish standard in accordance with the European PN-ISO 9613-2: 2002 Acoustics, Reduction of the propagation of sound in the open space, The general method of calculation , together with the documents to which the abovementioned method is referenced. The calculation model covering the prepared digital model of the investment site along with the location of stationary noise sources and the location of areas subject to acoustic protection has become the basis of the presented analyzes. The digital area model was made on the basis of maps for design purposes provided by the Investor, consistent with the base and topographic maps. Sources of noise have been included in the calculation model as point sources along with acoustic parameters, which constitute input data for the calculation method used in accordance with the recommendation of Directive 2002/49 / EC of the European Parliament and the Council. According to the quoted norm, sound wave propagation in the environment is characterized by A attenuation of acoustic energy which is radiated from the source of noise to the external environment. This attenuation is the resultant size of several components referring to various physical phenomena accompanying the propagation of sound and is expressed by the formula:

= + + + + where:

- attenuation resulting from the so-called "geometric discrepancy" or spherical spread of the acoustic wave from the point source of sound;

- attenuation due to absorption by the atmosphere; - attenuation resulting from interaction with the surface over which the sound propagates; - attenuation resulting from the presence of obstacles in the propagation of sound between the source and the observation point;

- attenuation resulting from other phenomena accompanying sound propagation, including absorption during propagation through high greenery areas, dense development areas or industrial areas.

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The following parameters were adopted in the analyses related to the abovementioned attenuation components: average temperature: 10 °C, average relative humidity: 70 %, average ground absorbtion rate: G=0,8.

One of the factors that affect the obtained noise levels which come from wind turbines is the adoption of an appropriate G factor. The G factor determines the type of soil and its parameters related to the absorption and reflection of the sound wave generated by the source of noise. And so the G = 1 factor means a porous ground that includes soil covered with grass, trees or other greenery, e.g. arable fields. The G = 0 factor includes hard soil - pavement, water, ice, concrete and all other surfaces with low porosity (e.g. compacted ground found in industrial areas). The mid-point of the G factor indicates the percentage share of hard and porous soil.

The visual analysis of the area of the planned D ębsk wind farm has shown that the vast majority is the porous soil, close to G = 1. The assumed value of G = 0.8 for the calculation of noise ranges means the share of 20% of hard soil and 80% of porous soil. This is a kind of an average, which rather inflates the amount of hard soil for the analysed area of calculation.

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4.2. NOISE RANGE WHICH COMES FROM D ĘBSK WIND FARM FOR THE TIME OF THE DAY AND NIGHT TIME The purpose of the following analysis is to determine the noise emission generated by wind turbines (stationary noise sources) planned for installation in the form of the D ębsk Wind Farm in the municipalities of Kuczbork-Osada and Żuromin in the Mazowieckie province. The values of the equivalent A sound level obtained for the reference points located in the areas subject to noise protection obtained as a result of the simulation were referred to the levels permissible for the time of the day and for the night time in accordance with the Regulation of the Minister of Environment of June 14, 2007 on permissible noise levels in the environment (Journal of Laws 2014, item 112 - consolidated text). In the areas subject to protection against noise located in the immediate vicinity of wind turbines, 26 reference points were designated, in accordance with the Regulation of the Minister of Environment of 30 October 2014 on the requirements for conducting emission measurements and measurements of the amount of collected water. Annex No. 7: reference methodology for performing periodic measurements of noise in the environment originating from installations or devices, except for impulsive noise (Journal of Laws of 2014, item 1542). The reference points were located in the areas subject to noise protection, designated on the basis of the valid Local Area Development Plans of the municipalities of Kuczbork-Osada and Żuromin at an altitude of 4 m above sea level. The planned investment includes the construction of a wind farm park, composed of 55 turbines, which after the realization stage will be subject to operation around the clock. The specificity of the work of wind turbines is associated with variable noise emission, closely related to meteorological conditions, and in particular to wind speed. Due to the the fact that it is difficult to forecast the high variability of the wind turbine operation, dependent on variable meteorological conditions, and variable noise emission, the present study adopted the least favorable evaluation option, which assumed uniform work and noise emission above the reference wind speed. In other words, it was assumed that throughout the entire reference time, both for the time of the day and night time, there are meteorological conditions at which the turbines reach their rated electrical power and are characterized by constant, maximum emission of noise to the environment. The project involves the installation of brand new wind turbines with 120 m high towers, whose acoustic parameters in the form of an octave spectrum of the maximum sound power level are presented in Table 3.

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Table 3. Acoustic power level of considered turbines in octave bands Equivalent Turbine Octave band [Hz] acoustic power type 31,5 63 125 250 500 1000 2000 4000 8000 level LWA [dBA] V110 76,8 87,2 93,5 97,2 99,3 100,2 99,7 95,8 81,3 106,1 STE

Table 4 summarizes the coordinates of the planned 55 wind turbines of D ębsk Wind Farm in the 2000 coordinate system, zone 7.

Table 4. Coordinates of the location of the planned turbines in the 2000 coordinate system, zone 7

Turbine symbol X Y

TW1 5882431 7431555 TW2 5881614 7432315 TW3 5882316 7432598 TW4 5881009 7432727 TW5 5881015 7433138 TW6 5881536 7433027 TW7 5881854 7433321 TW8 5882447 7433230 TW9 5882381 7433766 TW10 5881502 7433731 TW19 5883298 7431271 TW20 5884390 7432940 TW21 5884233 7433718 TW22 5884062 7434388 TW23 5883817 7433897 TW24 5883933 7433149 TW25 5883791 7432771 TW26 5883404 7432973 TW27 5883512 7433608 TW28 5883497 7434191 TW30 5882985 7433967 TW31 5882945 7433117 TW32 5882386 7434411 TW33 5882552 7434986 TW35 5881965 7434494 EW1 5878441 7428109 EW2 5878610 7428536 EW3 5878339 7428934 EW4 5877928 7429305

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EW5 5877575 7429701 EW6 5877425 7429264 EW8 5877127 7429786 EW9 5876724 7428948 EW10 5876453 7429338 EW12 5878864 7428913 EW13 5878666 7429447 EW14 5878418 7429926 EW15 5878590 7430381 EW16 5878709 7431650 EW17 5878691 7432172 EW18 5878404 7431284 EW19 5878253 7430671 EW20 5877503 7431064 EW21 5877994 7431141 EW22 5878300 7431825 EW24 5878209 7432321 EW25 5877668 7432530 EW27 5877300 7432675 EW28 5876799 7433006 EW29 5876649 7432403 EW30 5879232 7432853 EW31 5879114 7432496 EW32 5878581 7432627 EW33 5878951 7433266 EW34 5878206 7432866

Table 5 presents the values of the projected equivalent A sound level to the planned investment in the adopted reference points. The graphical form of the noise spread in the form of isolines of the equivalent sound level in the environment, is presented on the maps in the scale 1: 30000 in Annex No. AKU01 (time of the day / night time). The noise range was determined at a height of 4 m above the ground level in the grid of 10 x 10 m of computational points. The input data of the simulations are presented in the annex No. AKU2.

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Table 5. Results of the acoustic analysis at designated reference points Determined level Permissible level Exceeding Name Area function Day time Night time Day time Night time Day time Night time (dB) (dB) (dB) (dB) (dB) (dB) PR01 FB 40,1 40,1 55 45 -- -- PR02 FB 39,5 39,5 55 45 -- -- PR03 FB 39,7 39,7 55 45 -- -- PR04 FB 40,9 40,9 55 45 -- -- PR05 FB 43,6 43,6 55 45 -- -- PR06 FB 38,6 38,6 55 45 -- -- PR07 FB 38,1 38,1 55 45 -- -- PR08 FB 41,9 41,9 55 45 -- -- PR09 FB 42,4 42,4 55 45 -- -- PR10 FB 42,6 42,6 55 45 -- -- PR11* FB 41,4 41,4 55 45 -- -- PR12 FB 41,2 41,2 55 45 -- -- PR13** ChY 38,6 38,6 50 ------PR14 FB 37,7 37,7 55 45 -- -- PR15 FB 43,0 43,0 55 45 -- -- PR16 FB 43,4 43,4 55 45 -- -- PR17 FB 41,2 41,2 55 45 -- -- PR18 FB 40,1 40,1 55 45 -- -- PR19 SFH 39,5 39,5 50 40 -- -- PR20 FB 41,1 41,1 55 45 -- -- PR21 FB 44,8 44,8 55 45 -- -- PR22 FB 42,1 42,1 55 45 -- -- PR23 FB 38,4 38,4 55 45 -- -- PR24 FB 40,3 40,3 55 45 -- -- PR25 FB 39,1 39,1 55 45 -- -- PR26 FB 37,7 37,7 55 45 -- -- PR27 FB 33,3 33,3 55 45 -- -- PR28 FB 34,4 34,4 55 45 -- -- PR29** RR 35,7 35,7 55 ------* uninhabited building, being in ruins (see photo 7) ** buildings not used at night (noise levels do not apply)

FB – farm buildings SFH – single-family housing development ChY - areas of buildings associated with permanent or temporary stay of children and youth RR – rest and recreational building area (allotments)

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CONCLUSION 3: Based on the performed analysis of simulations of sound propagation in the environment, it can be stated that the noise, resulting from the operation of the planned investment involving the construction of the D ębsk Wind Farm in the Żuromin and Kuczbork-Osada communes, will not pose a threat to the acoustic climate in relation to the areas subject to noise protection in the immediate vicinity of the investment area. No occurrence of noise limits exceedances also means that all 55 turbines under the planned investment can work at full capacity, i.e. without the need to muffle the noise of them.

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4.3. NOISE RANGE WHICH COMES FROM THE D ĘBSK WIND FARM AND EXSISTING TURBINES FOR THE TIME OF THE DAY AND NIGHT TIME – CUMULATIVE EFFECT

In order to show the actual impact of the noise of the planned investment, the existing noise sources should be also taken into account. After the area inspection, it was found that the sources of noise that may accumulate with the planned wind turbines of Dębsk Wind Farm will be already working turbines which are in the neighbouring areas. In the immediate vicinity of the planned D ębsk Wind Farm, there are 7 Gamesa G90 turbines and 1 Vestas V90 turbine and 1 Enercon E58 turbine. Table 6 presents the coordinates and acoustic parameters of existing wind turbines, the acoustic impact of which was included in the cumulative effects analysis. Table 6. Location data for existing turbines

Height of Acoustic power level Turbine Coordinates [2000] Turbine model the tower [dBA] symbol [m] Day time Night time X Y 1 Gamesa G90 100 106,4 106,4 5883746 7432018 2 Gamesa G90 100 106,4 106,4 5883285 7431961 3 Gamesa G90 100 106,4 106,4 5884023 7432439 4 Gamesa G90 100 106,4 106,4 5883310 7432489 5 Gamesa G90 100 106,4 106,4 5882818 7432509 6 Gamesa G90 100 106,4 101,9 5884575 7432404 26 Gamesa G90 100 106,4 101,4 5885076 7432460 27 Vestas V90 105 105,0 105,0 5883250 7429945 28 Enercon E58 70,5 102,5 102,5 5879850 7428777

Table 7 presents the values of the projected equivalent A sound level to the planned investment and existing wind turbines (cumulative effect) in the adopted reference points. The graphical form of the noise spread in the form of isolines of the equivalent sound level in the environment is shown on the maps in the scale 1: 30000 in the annexes No. AKU03.1 (time of the day) and AKU03.2 (night time). Noise range was determined at a height of 4 m above the ground level in the grid of 10 x 10 m of computational points. The input data of the simulations were presented in the annex No. AKU4.

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Table 7. Results of acoustic analyzes - cumulative effect in designated reference points Determined level Accesible level Exceeding Name Area function Day time Night time Day time Night time Day time Night time (dB) (dB) (dB) (dB) (dB) (dB) PR01 FB 44,2 42,4 55 45 -- -- PR02 FB 41,0 40,3 55 45 -- -- PR03 FB 39,7 39,7 55 45 -- -- PR04 FB 40,9 40,9 55 45 -- -- PR05 FB 43,6 43,6 55 45 -- -- PR06 FB 38,6 38,6 55 45 -- -- PR07 FB 38,1 38,1 55 45 -- -- PR08 FB 41,9 41,9 55 45 -- -- PR09 FB 42,4 42,4 55 45 -- -- PR10 FB 42,6 42,6 55 45 -- -- PR11* FB 41,4 41,4 55 45 -- -- PR12 FB 41,2 41,2 55 45 -- -- PR13** ChY 38,6 38,6 50 ------PR14 FB 37,7 37,7 55 45 -- -- PR15 FB 43,0 43,0 55 45 -- -- PR16 FB 43,4 43,4 55 45 -- -- PR17 FB 41,2 41,2 55 45 -- -- PR18 FB 40,1 40,1 55 45 -- -- PR19 SFH 39,5 39,5 50 40 -- -- PR20 FB 41,1 41,1 55 45 -- -- PR21 FB 44,8 44,8 55 45 -- -- PR22 FB 42,1 42,1 55 45 -- -- PR23 FB 39,4 39,4 55 45 -- -- PR24 FB 40,7 40,7 55 45 -- -- PR25 FB 40,9 40,9 55 45 -- -- PR26 FB 40,1 40,1 55 45 -- -- PR27 FB 38,7 38,2 55 45 -- -- PR28 FB 41,2 40,4 55 45 -- -- PR29** RR 43,7 42,4 55 ------* uninhabited building, being in ruins (see photo 7) ** buildings not used at night (noise levels do not apply)

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CONCLUSION 4: Based on the performed analysis of simulations of sound propagation in the environment, it can be stated that the noise, resulting from the operation of the planned investment involving the construction of the D ębsk Wind Farm in the Żuromin and Kuczbork-Osada communes, will not pose a threat to the acoustic climate in relation to the areas subject to noise protection in the immediate vicinity of the investment area. Noise emission during operation of existing and planned turbines as part of cumulative effects and no occurrence of noise limits exceedances also means that all 55 turbines under the planned investment can work at full capacity, i.e. without the need to muffle the noise of them.

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5. NOISE EMISSION FOR THE CONSTRUCTION STAGE – EXEMPLARY LOCATION OF THE CONSTRUCTION SITE

The investment realization stage will be related to the noise emission during the use of machines and devices necessary for the works related to the construction of a wind farm park and the transport of turbine components to the place of their assembly. It should be emphasized that the noise emission, and thus the acoustic nuisance accompanying the above-mentioned works will be short-lived and will disappear immediately after the completion of the investment and putting it into service.

The stage of investment realization includes the construction of a wind farm, under which there are the stages which are associated with:

- construction of paved access roads and exits to target turbine locations together with assembly, maneuvering and storage yards, - renovation, extension of existing roads within the farm, including the expansion of downhills, so as to ensure the possibility of transporting turbine components, - laying the underground power network between power plants, - excavations for turbine foundations and the export of excess soil, - pouring foundations at the location of turbines, - transport and assembly of the power plant. - power output via an underground cable to the subscriber transformer station.

The highest noise emission from the above mentioned is characterized by the stage of pouring foundations at the location of the turbines. It is connected with a large number of machines (vehicles transporting concrete) used in its course, whose increased traffic results from the necessity to maintain work continuity. For this stage of investment implementation, it is possible to precisely determine the working time and the number of machines being the source of noise. Based on the available data, it was found that the time of pouring out a single foundation takes about 10 hours and involves transporting concrete through about 80 concrete wagons and pouring it into a prepared, armed excavation by means of a pump. The acoustic analysis of foundation pouring operations for the example of EW3 turbine is presented below, which is located in the least favorable way in relation to the buildings subject to noise protection.

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In the acoustic analysis, sources of noise were taken as inventoried in the table 8. It was assumed that all construction work will be carried out only during the day.

Table 8. List of noise sources parameters included in the analysis for the construction stage of the farm Acoustic power level Working time/numer of

Symbol Device/machine LWA vehicles at reference [dBA] time equal to 8 hours

S1 Concrete pump 105,0 8 h/8 h

Concrete mixer truck (maneuvering, pouring the S2 105,0 8 h/8 h concrete)

Concrete mixer truck (delivery of S3 100,0 64 poj./8 h * the concrete – driving)

* assuming that 80 concrete vehicles deliver concrete for 10 hours, we get 8 concrete wagons for 1 hour, hence in the course of 8 hours (reference time for noise assessment) we get 64 concrete mixer trucks (each of them travels on the way in both directions).

Due to the lack of detailed data on the pump, which will be used in the case of the investment realization, the maximum permissible acoustic power level of typical construction machines set out in the Regulation of the Minister of Economy of 21 December 2005 on essential requirements for equipment and devices used outdoors in the field of noise emission to the environment (Journal of Laws of 2005 No. 263, item 2202). It was assumed that the pump will operate continuously throughout the reference time, however the noise source - the motor - will be a stationary point source located within the construction site. The acoustic power level of concrete mixers both during driving and maneuvering operations was adopted in accordance with ITB Instruction 338 - Method for determining emission and imission of industrial noise in the environment, as for heavy vehicles. It was assumed that the actual speed of vehicles traveling to the construction site will reach a maximum of 30 km / h. It was assumed that the vehicles would drive up to the construction site directly one after the other, so that the supply of concrete would be continuously ensured. Hence the working time of the point source, which was an operation of maneuvering of vehicles and pouring concrete, was assumed as continuous during the 8 hours of the day. The assessment of the acoustic impact of the construction stage on areas subject to noise protection, located in the vicinity of an exemplary construction site, was carried out for the nearest reference point no. PR18, located on the border of Chamsk. The values of the equivalent A sound level obtained as a result of the simulation are shown in the Table 9. The graphical form of noise spread simulation

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for the construction stage of the subject turbine, in the form of an equivalent acoustic level, is presented in Figure 1.

Table 9. Equivalent acoustic levels A for the time of day (LAeq, D) - stage of the construction of the farm - pouring foundations for the wind turbine

Designated values of the equivalent acoustic Reference point Area function level LAeq, D [dBA] PR18 Farm buildings 45,7

Figure 1. Noise range for the construction stage of the plant - pouring foundations for the EW3 turbine

CONCLUSION 5: On the basis of the conducted analysis of simulations of sound propagation in the environment for the wind farm construction stage (an example of pouring foundations for a single wind turbine), it should be stated that the equivalent sound level values in residential buildings for standard 8 hours of the day will not exceed 55 dB, which is permissible noise level for farm buildings. This means that the stage of investment implementation should not cause excessive nuisance related to noise emission.

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