Leed ratings in reference to entry matting is based on Indoor Chemical and Pollutant Source Control and states the following:
 
Intent
To minimize building occupant exposure to potentially hazardous particulates and chemical pollutants.

Official environmental policy statement

All of our PVC matting products are made from plasticised polyvinyl chloride formulation.

There has been some controversy about the use of PVC, but all detailed scientific studies have concluded that it has an environmental impact similar to, or better than, other plastics.

The raw materials for PVC are salt (57%) and oil or gas (43%). Because of its relatively low oil or gas content, the production of PVC involves using less of our limited oil reserves than is necessary for most other plastics.

REACH is an EC regulation (EC 1907/2006) on chemicals. It deals with the Registration, Evaluation, Authorisation and restriction of Chemical substances. The aim of REACH is to improve the identification of the intrinsic properties of chemical substances. At the same time, the innovative capability of the EU chemicals industry should be enhanced. The benefits of the REACH system will come gradually, as more substances are registered.

Following the publication of Annex 1 to the above, Plastex confirm that all PVC base compounds used in the manufacture of its products do not contain Di(2-ethylhexyl) phthalate (DEHP) plasticizer.