Odor Immission Directive (North Rhine-Westphalia)

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Basic data
Title: Determination and assessment of odor immissions
Short title: Odor immission guideline
Previous title: Guidelines for the notification and approval of expert bodies in the field of immission control
Abbreviation: GIRL
Type: Circular
Scope: North Rhine-Westphalia
Issued on the basis of: GIRL (LAI)
Legal matter: Special administrative law , environmental law
References : SMBl. NRW. 7129
Original version from: March 27, 1986
( MBl. NW. S. 525)
Entry into force on: May 12, 1986
Last revision from: November 5, 2009
(MBl. NRW. P. 533)
Entry into force of the
new version on:
November 28, 2009
Please note the note on the applicable legal version.

The odor immissions guideline (GIRL), in the long title determination and assessment of odor immissions , is a regulation of the state of North Rhine-Westphalia . It goes back to the odor pollution guideline of the federal state committee for pollution control (LAI) 2004.

The GIRL is used to record and assess odors as immission in accordance with Section 3 of the Federal Immission Control Act . In 1986, it replaced the Refinery Directive 1975 and the implementing decree for the TA Luft 1986 in North Rhine-Westphalia . Adjustments were made in 1993, 1995, 1998, 2004 and 2008. It is important for approval procedures and monitoring.

The current version is from November 5, 2009 ( MBl. NRW. No. 31 of November 27, 2009 p. 533).

Significant annoyance can be assumed if odor hour frequencies of more than 10 or even 15% per year occur in a local situation. According to number 3.1 (immission values):

According to this guideline, only clearly perceptible odor immissions may be assessed, i.e. those odor immissions that can be identified with sufficient certainty and unequivocally based on their origin from systems or groups of systems, i.e. can be distinguished from odors from vehicle traffic, domestic fires, vegetation, agricultural fertilization measures or the like . Odor immissions are generally to be rated as considerable nuisance if the total exposure IG (number 4.6) exceeds the immission values ​​IW specified in Table 1. The immission values ​​are relative frequencies of the odor hours (see number 4). "

See also

Web links

Individual evidence

  1. Eckehard Koch: Odor immissions - a long way to evaluation . Hazardous substances - keeping the air clean , Volume 72 (2012) 10, p. 397.
  2. Eckehard Koch: On the history of the determination and evaluation of odor immissions . In: Air cleanliness commission in the VDI and DIN standards committee KRdL (ed.): Odors in the environment . VDI reports 2195, 2013, ISBN 978-3-18-092195-2 , pp. 1–14.