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Line 30: − + − + − [[Infiltration: Testing]] − − <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> − − + Line 47:
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→Planning
===Planning===
===Planning===
<h4>Soil Infiltration Testing </h4>
<h4>Soil infiltration rate</h4>
<p>Infiltration tests must be undertaken at the location, depth and with a head of water that replicates the proposed design. </p>
<p>[[Infiltration: Testing|Infiltration tests]] must be undertaken at the location, depth and with a head of water that replicates the proposed design. </p>
<table>
<table>
<table class = "table-responsive table table-striped">
<table class = "table-responsive table table-striped">
<caption><strong>Suggested safety factors to be applied when designing infiltration facilities</strong></caption>
<caption><strong>Suggested safety factors to be applied to measured percolation rate when designing infiltration facilities</strong></caption>
<tr class="success">
<tr class="success">
<th rowspan="2">Catchment area</th><th colspan="3" class="text-center">Consequence of failure</th>
<th rowspan="2">Catchment area</th><th colspan="3" class="text-center">Consequence of failure</th>
<tr><td style="white-space: nowrap"> 100 - 1000 m<sup>2</sup><td>1.5</td><td>3</td><td>10</td></tr>
<tr><td style="white-space: nowrap"> 100 - 1000 m<sup>2</sup><td>1.5</td><td>3</td><td>10</td></tr>
</table>
</table>
<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>
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[[category:Infiltration]]
[[category:Infiltration]]