The concept that European zero-tolerance of low-level GM presence has economic downside is discussed in Brussels

EU intolerance of low-level presence of un-approved GMOs in commodity shipments is a serious economic dislocation, and portends increasing economic damage to the EU.

A workshop was recently held in Brussels to consider the issue.

GMO Asynchronous and Asymmetric approvals: bringing lasting solutions to identified problems
http://www.bruxelles.enea.it/Eventi/GMORES2010.html

18-19 March 2010, Brussels

The 18th and 19th March 2010, the workshop “GMO Asynchronous and Asymmetric approvals: bringing lasting solutions to identified problems” was organized by CEN (European Committee for Standardization) and ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development) in Brussels.

The workshop represented an important step towards the objective of bringing together all the stakeholders and increasing the efforts on the harmonization of technical methodologies and authorization procedures regulating GM crops in Europe….

The paper by E. Rodriguez-Cerezo, JRC-IPTS in particular, available as a pdf at the linked site, provides some eye-popping data on the issue.