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Created page with "===Potential Constraints=== <ol> <li>Shallow bedrock </li> <li>High groundwater or areas where increased infiltration will result in elevated groundwater levels, which can be..."
===Potential Constraints===
<ol>
<li>Shallow bedrock </li>
<li>High groundwater or areas where increased infiltration will result in elevated groundwater levels, which can be demonstrated to damage critical utilities or private property. </li>
<li>Swelling clays or unstable sub-soils</li>
<li>Contaminated soils or sites with high risk of contamination from onsite activities </li>
<li> Flood prone areas where the wastewater system is sensitive to groundwater conditions causing sewer backups, and where LID BMPs have been found to be ineffective. </li>
<li> Areas where the ecology and natural hydrology are dependent upon surface water. </li>
<li> Prohibitions and/or restriction per approved Source Protection Plans (see MOECC guidance).
</ol>
===Planning===
<h4>Soil Infiltration Testing </h4>
<p>Infiltration tests must be undertaken at the location, depth and with a head of water that replicates the proposed design. </p>
<h4>Groundwater</h4>
<p> The bottom of the infiltration BMP must ≥ 1 m vertically separated from the seasonally high water table, and underlying bedrock. This reduces the risk of contaminating groundwater and helps to ensure reliable infiltration rates throughout the year. </p>
<ol>
<li>Shallow bedrock </li>
<li>High groundwater or areas where increased infiltration will result in elevated groundwater levels, which can be demonstrated to damage critical utilities or private property. </li>
<li>Swelling clays or unstable sub-soils</li>
<li>Contaminated soils or sites with high risk of contamination from onsite activities </li>
<li> Flood prone areas where the wastewater system is sensitive to groundwater conditions causing sewer backups, and where LID BMPs have been found to be ineffective. </li>
<li> Areas where the ecology and natural hydrology are dependent upon surface water. </li>
<li> Prohibitions and/or restriction per approved Source Protection Plans (see MOECC guidance).
</ol>
===Planning===
<h4>Soil Infiltration Testing </h4>
<p>Infiltration tests must be undertaken at the location, depth and with a head of water that replicates the proposed design. </p>
<h4>Groundwater</h4>
<p> The bottom of the infiltration BMP must ≥ 1 m vertically separated from the seasonally high water table, and underlying bedrock. This reduces the risk of contaminating groundwater and helps to ensure reliable infiltration rates throughout the year. </p>