I am conducting an investigation of the CAS number, CLP Regulation number, and EC index number, as well as the water hazard class for the substances stored, used, produced, and released in your facility. Based on the annual quantities of storage capacity, throughput capacity, production volume, and/or release volume, as well as the water hazard class, I am examining whether there is a quantity relevance for these substances that necessitates the preparation of an Initial Soil Condition Report (ISC) for soil and groundwater, while simultaneously having substance relevance. Quantity relevance is determined using criteria outlined by the LABO (Länderarbeitsgemeinschaft Bodenschutz) for the Initial Soil Condition Report, using a program developed by me.

CAS Number (Chemical Abstracts Service): 
The CAS number is a unique identifier for chemical compounds. You can find the CAS number of a substance through databases such as the CAS Registry or on Safety Data Sheets (SDS) provided by manufacturers and suppliers.

CLP Regulation Number: 
The CLP Regulation number refers to the classification, labeling, and packaging of chemicals and is part of the EU Regulation on Classification, Labeling, and Packaging of Substances and Mixtures. This number can also be found on Safety Data Sheets.

EC Index Number: 
The EC Index Number (EC Number) identifies substances in the European Union. This number can also be found on Safety Data Sheets.

Water Hazard Class: 
The water hazard class of a substance indicates how hazardous it is to water bodies. This classification is done according to the water hazard class according to German legislation or similar standards in other countries.