Comments on - Appendix -…

Comments on - Appendix - Updates to the Analytical Protocol

Consideration needs to be given to harmonizing the CCME Analytical Protocol and the Ontario Analytical Protocol to help ensure consistent application of sample handling, holding times, and preservatives across Canada where possible.

Allow Cr6+ preservation using NaOH and update 3.1.2.6 water preservation to allow both options of preservation. Using an ammonium buffer can result in ammonia contamination issues in other water samples. Adopt the CCME Cr6+ in water preservation and holding time. Pg 28 or 191. Table 3B.

Update Table B Soil VOC/F1 methanol preservation holding time to be 40 days. Remove the term recovered methanol extract wording from the method. This will harmonize CCME and Ontario/BC etc.

Make field filtration of groundwater metals samples mandatory. See the attached EnviroMail regarding dissolved metals and BC Regulations. This is very important to have consistent application of dissolved metals field filtering in order to better represent the metals concentration at the time of sampling, in particular for Iron concentrations. C

Update the Glossary to indicate field filtering must be done at the time of sample collection and not up to 24 hours later. Samples can subsequently have preservative added but need to wait 16 hours prior to analysis.

Add an option to field filter metals and preserve back at the lab with the 16 hour wait period for the metals to re-dissolve prior to analysis.

ATG 3.1.2.9 - Metals - Change the method principle for groundwater samples requiring analysis for dissolved metals from allowing an option for filtration and preservation at the lab. Instead, indicate that the samples must be field filtered and preserved immediately or field filtered and then consequently the un-preserved, field filtered samples, can be acidified and analyzed at the lab following the 16 hour wait time.