Noise is an important aspect in many developments and situations. Hendrikson & Ko provides a large variety of services related to acoustics and noise (modelling with special software, expert assessments, surveys etc.).

Services we offer for our clients:

• Strategic noise maps and action plans to reduce noise – compiled for highways and bigger cities;
• Noise surveys for large infrastructure objects (in SEA/EIA process) – highways, airports, wind farms, racing tracks, industrial objects;
• Noise surveys and consultations for different development projects and spatial plans (inc noise surveys for detailed plans);
• Noise level measuring
• Vibration assessments

Environmental noise modelling, strategic and local noise map compiling:

Hendrikson & Ko compiles strategic/local noise maps using approved environmental noise modelling software. We are able to model various sources of noise using special software adjusted specially for that source:

• Traffic, industrial, military and mining noise modelling with SoundPLAN (Braunstein+Berndt GmbH):
• Air traffic modelling with Integrated Noise Model (USA Federal Aviation Administration);
• For wind farm impact assessments and noise map compiling we use WindPRO (EMD International A/S Denmark). In addition, we compile wind farm related shading assessments with modelling and visualisations (photomontage) for planned wind farms.

In the process of compiling noise maps and expert assessments we follow these normative legal documents:

• EU directive 2002/49/EC;
• Degree nr. 42 by Minister of Social Affairs on March 4th, 2002 – “Noise Standards for Residential and Leisure Areas, Residential and Communal Buildings and Methods for Noise Measurements”;
• Degree nr. 87 by Minister of Social Affairs on June 29th, 2005 – “Minimum Standards for Strategic Ambient Air Noise Maps and Noise Reduction Action Plans “;
  • Ambient Air Protection Act;
• Other legal documents.

Results from modelling are presented according to the specific need:

• Calculated noise levels in noise sensitive areas:
  – equivalent noise level LpAeq (dB). day time (07.00-23.00) and night time (23.00-07.00);
  – maximum noise level LpAmax (dB).
• Graphical noise maps (noise contours);
• Difference maps for noise levels:
  – current state/future prediction;
  – current state/change after noise barrier construction.
• Three-dimensional (3D) noise maps in suitable forms:
  – 3D noise maps on basic maps;
  – 3D noise maps on ortophotos.

Examples of different noise maps:

Strategic noise maps of cities and noise maps made during strategic assessment of city comprehensive spatial plan:

Noise maps compiled for detailed spatial plans (inc. noise levels on the facades of the buildings):

Strategic noise maps for highways and noise maps compiled during environmental impact assessment of road construction designs:

References:

• Noise map for Tallinn Airport, 2015
• Environmental noise reduction action plan for Tartu city , 2012-2013
• Strategic ambient air noise map for Tartu City, 2011-2012
• Strategic environmental assessment of Kristiine district comprehensive plan (noise map for the whole district), 2011-2012
• Environmental impact assessment of Loo II limestone quarry, 2010-2012
• Environmental impact assessment of preliminary design of Rakvere-Haljala section of basic road nr 23, 2008-2009
• Location selection thematic plan for an object with significant spatial impact (race circuit) for Ringi site and neighbouring areas in Rae municipality, 2007-2008
• Thematic plan and strategic environmental assessment of Varja (Lüganuse municipality) wind farm, 2007
• Thematic plan and strategic environmental assessment of Purtse (Lüganuse and Sonda municipality) wind farm, 2007-
• Strategic environmental assessment of Viljandi city comprehensive plan (noise map for the whole city was compiled), 2007-2008
• Environmental impact assessment of preliminary design of Paide-Mäo section 91,5-94,5 km and Paide bring road section 87,8-91,5 km of T5 Pärnu-Rakvere-Sõmeru highway, 2007-2008
• Environmental impact assessment of preliminary design of Tartu pass-by and Tartu-Elva highway section , 2006-2008
• Ambient air strategic noise maps for highway sections with more than 6 million vehicles per year, 2007
• Strategic environmental assessment of Ämari military airfield detailed plan, 2006-2007
• Narva 50 MW wind farm project by Cohesion Fund, 2006-2007
• Environmental impact assessment of preliminary design of Ülemiste traffic junction and Peterburi road reconstruction, 2006-2007
• Environmental impact assessment of technical design of Tallinn – Narva highway E 20 (T 1) Valgejõe – Rõmeda section, 2006-2007
• Strategic environmental assessment of detailed plan for Tartu airfield reconstruction, 2006-2007

International projects:

• Envision Energy wind farm in Sweden, 2013 (Envision Energy International, confidential)
• Vartinoja wind farm, 2011 (Envision Energy International, confidential)
• Traffic noise modeling of motorway M2 (The Junction of Lipjan up to Hani I Elezit), 2009-2010
• Traffic noise modeling of Route 7 Motorway (Section 8 (5.3 km) and Section 9 (8.6 km)) in Kosovo, 2011-2012
• Environmental consultation for Varessäikä (Siikajoki) wind farm in Finland, 2010
• Environmental consultation for Mäkelänkangas windfarm in Finland, 2010-2011
• Environmental consultation for Kotka and Kotkansaari wind farms in Finland, 2010-2011
• Environmental consultation for Vartinoja windfarm in Finland, 2010-2012