Esra Model Chemal Gegg 20 Top Page

Take‑away : 7️⃣ Frequently Asked Questions (FAQ) | Q | A | |---|---| | Can I use the Top‑20 list for chemicals not on the list? | Yes, the ESRA model is generic. The list is a prioritisation shortcut ; for any other substance you’ll need its own exposure & hazard data. | | Is the CHEMAL GEGG database free? | A core dataset (CAS, basic phys‑chem, production volume) is open‑access via the EU‑OpenChem portal. The full exposure‑grid (scenario coefficients) is available under a Creative‑Commons Attribution‑NonCommercial license. | | What software can run ESRA? | Commercial: ESRA‑Pro , RiskQuant . Open‑source: OpenESRA (Python‑based, integrates with pandas / numpy ). | | How often is the Top‑20 updated? | Annually, using the latest REACH & TSCA submissions plus peer‑reviewed toxicity data. | | What if my jurisdiction uses a different risk banding system? | ESRA scores are dimensionless; you can map them to any local banding (e.g., “Tier‑1/2/3”) by setting custom cut‑offs. | 8️⃣ Quick‑Start Cheat Sheet (Downloadable) | File | Description | |------|-------------| | ESRA‑Model‑Template.xlsx | Pre‑filled with the Top‑20 CHEMAL GEGG data; just plug in your local emission rates. | | GEGG‑Scenario‑Matrix.pdf | Visual guide to the 12 exposure pathways and default scaling factors. | | Risk‑Communication‑Poster.png | Ready‑to‑print poster (A2) showing colour bands