New Mexico Administrative Code
Title 16 - OCCUPATIONAL AND PROFESSIONAL LICENSING
Chapter 8 - COMMERCIAL AND MEDICAL CANNABIS
Part 7 - QUALITY CONTROL, INSPECTION, AND TESTING OF CANNABIS PRODUCTS
Section 16.8.7.17 - PREVENTION OF HEAVY METAL CONTAMINATION

Universal Citation: 16 NM Admin Code 16.8.7.17

Current through Register Vol. 35, No. 18, September 24, 2024

A. Growing media The cannabis establishment shall maintain, and make available for division inspection, records of all growing media purchased.

B. Water If using for irrigation water from a non-municipal source, a cannabis establishment shall maintain quarterly testing data indicating concentrations at or below the action levels in Table 1, Heavy Metal Testing Requirements for Water and Soil, below.

C. Soil If growing cannabis directly in the ground, the cannabis establishment shall submit at least annually representative soil samples to a laboratory for analysis of arsenic, cadmium, lead, and mercury levels and shall retain a certificate of analysis for inspection by the division. If the concentration of any heavy metal exceeds the action levels in Table 1, Heavy Metal Testing Requirements for Water and Soil, below, the cannabis establishment shall remediate the soil and shall not produce additional plants until soil concentrations are below the applicable action levels.

D. Choice of laboratories The cannabis establishment may submit water or soil samples to any laboratory in the United States offering water or soil analysis for the four required analytes.

Table 1. Heavy Metal Testing Requirements for Water and Soil

Analyte

Symbol

CAS Number

Action Level: Soil*

Action Level: Water[Dagger]

Arsenic

As

7440-38-2

4.25

10.0

Cadmium

Cd

7440-43-9

7.05

5.0

Lead

Pb

7439-92-1

400

15.0

Mercury

Hg

7439-97-6

2.38

2.0

*Reported in micrograms per gram (µg/g) of sample/parts per million (ppm). Based on New Mexico Environment Department's Risk Assessment Guidance for Site Investigations and Remediation.

[Dagger]Reported in micrograms per liter (µg/L) of sample. Based on U.S. Environmental Protection Agency's maximum contaminant levels.

Disclaimer: These regulations may not be the most recent version. New Mexico may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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