Loon Lake

ORP (REDOX) was 221 mV. Dissolved oxygen was 6.0 ppm taken 30 m from shore at a deoth of 2 meters. Water sample from well pump source in lake. Water is 5.0 micron filtered and uv treated. REDOX reading slightly below the 300-500 mV recommendation which is logical and in step with a slightly low dissolved oxygen reading. Note theris no CCME guideline for ORP.

The chloride monitoring and reduction work with the MTO has completed for this past winter. The introduction of DLA to the area was successful in reducing the amount of chloride getting into Loon Lake, Dysart et al. The MTO will be expanding the DLA program to include the entire Highway 118 corridor, beginning in the winter of 2025-2026. This project has shown the importance of monitoring water and correcting any discovered issues when discovered. Because low levels, below 20 mg/l were being monitored, a Taylor K1598 kit was used that is basically a drop test kit using titration.

ORP was 247.
This is the first general testing of the season. And the last chloride test for the Ministry of Transportation - Ontario. The MTO was given a graphical summary of the winter season showing the rise in chloride and the rapid decline in chloride with their conversion to Direct Liquid Application in our area.

ORP WAS 247 mV. Lake ice still on. The water sample from a tap fed from a lake pump. Readings at this location are consistent with three other locations on the lake. These readings are all part of an experiment with the Ministry of Transportation - Ontario wherein they apply DLA on the winter roads and I measure the chloride levels in the lake.

Added measurement ORP equals 233 mV. Interestingly the Chloride reading is holding constant at 10 mg/l. There is no input of chloride since early March and with no outflow from the lake yet, therefore is no decline in chloride. Water levels are very slowly increasing but appear to be having no dilution effect.

Tap location. This is part of the chloride monitoring for the MTO project to discover if chloride levels from road salting can be reduced by the introduction of DLA in this area near a lake bordered by a highway. The chloride levels have dropped from 14 to 10 mg/l since the introduction of DLA to prewet NaCl. So far, the experiment/project appears successful.

This is a limited observation meant to measure chloride levels in concert with a chloride reduction project with the Ministry of Transportation. My readings indicate how effective the MTO strategies are in trying new methods of chloride reduction. In this instance the MTO is using a DLA method which is the introduction of a brine solution combined with salt crystals. So far, a drop in chloride levels has been observed with the implementation of DLA.

This limited reading is for a project I am working on with the Ontario Ministry of Transportation to reduce road salt getting into the lake where I live. The MTO has been trying different methods of applying sodium chloride to the road surface near the lake. The MTO estimates that by using Direct Liquid Application that they can reduce road saltdeposition by 20%. My readings let them know how they are doing!

This is one of four water samples collected in preparation for chloride monitoring in conjunction with a project I’m working on with the MTO. Only saline and chloride measurements were done. Chloride was obtained by titration. The saline reading was used to check the chloride levels using math. The MTO will be working with me, adjusting their operation to try to keep salt levels down by getting ongoing data from me throughout the winter.

New ORP meter in use. Factory calibrated and verified at my home at 256 mv. The ORP recorded was 213 mV from pumped water at big rock in front of my home. Totally acceptable reading.