Version 2 of EGRET is now available and is supported by a more extensive User Manual together with eight individual consumer GES. In addition a summary of the tool including latest adjustments are included in the attached presentation.
"Safety Assessment of Solvents for Consumers using EGRET v2"
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Download the demo of the EGRET v2 tool here
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DEVELOPMENT OF CONSUMERS GESs
ESIG has developed a tool (termed the ESIG GES Risk and Exposure Tool or "EGRET") that enables users to construct their own consumer CSA/ES for a particular area of use within the ESIG/ESVOC library. This library was constructed based on the results of the various communication and use mapping activities that have been undertaken with major Downstream User (DU) groups (e.g. the consumer use of solvents in coatings, which is in turn described by a set of product categories and sub-categories). To facilitate the utility of the tool, individual GES have also been developed for each of the 8 consumer GES users; coating, cleaning, lubricants, agrochemicals, fuels, functional fluids, de-icing and water treatment chemicals.
EGRET uses the default assumptions and algorithms (equations) described in the ECETOC TRA consumer module and further develops these in a manner described in Appendix F of ECETOC Technical Report 107 and 124 i.e. it introduces refined default values and develops additional product categories relevant to solvents (as described in chapter R12 of the REACH TGD) including the ability to estimate exposures from infrequent solvent uses. EGRET is an Excel based tool. This enables users to control the level of detail/complexity considered appropriate for any GES (which is a compilation of the product categories and subcategories considered relevant for the particular use).
Similarly, if users consider that the description of a PC or sub-category is different from the scenario evaluated (e.g. pesticide applications are assumed to be via pressure spray whereas a particular presentation may be via trigger spray or solid application), then users may refine the default assumptions/default values based on the information available. Therefore the tool, while straightforward to use, cannot be considered to be suitable for use by non-experts. It delivers the CSA and related ES in a manner that is transparent and consistent with the expectations of chapter R15 of the TGD. But it does require an understanding of the basis of how consumer exposures are determined and associated risks evaluated.
One major advantage of the tool for users, especially those registering substances under REACH, is its ability not only to calculate the Risk Characterization Ratio (RCR) for each use (including sub-categories of use) but to populate the control measures (e.g. product concentration for particular use to a safe level (i.e. ensuring an RCR of one of the three safe levels (0.9 by default 0.5 or 0.2) when calculated across all relevant exposure routes for that use). Furthermore, the tool also incorporates a capability to auto-populate the supporting narrative Exposure Scenario using all relevant exposure determinants with standard phrases in order that this information is consistently communicated to downstream users in a simple and structured way such that they are able to scale at the formulator level when appropriate.
For environmental assessments arising from consumer uses of solvents please refer to the GES SPERCS
A peer reviewed article describing the EGRET is also available here.