# COMAR Title 26 — Department of the Environment

## Subtitle 13 — Disposal of Controlled Hazardous Substances

### Chapter 02 — Identification and Listing of Hazardous Waste

#### Regulation .12 Characteristic of Corrosivity.

*COMAR 26.13.02.12*

A. A solid waste exhibits the characteristic of corrosivity if a representative sample of the waste has either of the following properties:

  (1) It is aqueous and has a pH less than or equal to 2 or greater than or equal to 12.5, as determined by a pH meter using Method 9040 in “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods”, EPA Publication SW-846, as incorporated by reference in COMAR 26.13.01.05A(4);

  (2) It is a liquid and corrodes steel (SAE 1020) at a rate greater than 6.35 mm (0.250 inch) per year at a test temperature of 55°C (130°F) as determined by the test method specified in NACE (National Association of Corrosion Engineers) Standard TM-01-69* as standardized in “Test Methods for Evaluating Solid Waste, Physical/Chemical Methods”, EPA Publication SW-846, which is incorporated by reference in COMAR 26.13.01.05A(4).

* The NACE Standard is available from the National Association of Corrosion Engineers, P.O. Box 986, Katy, Texas 77450.

B. A solid waste that exhibits the characteristics of corrosivity has the EPA Hazardous Waste Number of D002.