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| <p>Compost shall be stable, humus-like material produced from the aerobic decomposition of organic feedstocks, composted and cured until maturity. Compost shall be produced under the Compost Council of [http://www.compost.org/CQA-En.html| Canada’s Compost Quality Alliance] (CQA) certification program through testing by an [http://www.omafra.gov.on.ca/english/crops/resource/soillabs.htm| OMAFRA accredited soil laboratory], and certified as category ‘AA’ or ‘A’ under [https://www.ontario.ca/page/ontario-compost-quality-standards#section-2| Ontario Compost Quality Standards.]</p>
| | [[File:Wood based compost.jpg|thumb|wood based compost]] |
| <table class = "table table-striped table-responsive"> | | STEP are currently undertaking research into the quality of compost for use in LID installations. |
| <caption><strong>Specifications for category 'A' product under Ontario Compost Quality Standards</strong></caption>
| | |
| <tr class ='success'><th>Parameter</th><th>Acceptable range</th></tr>
| | Compost shall be stable, humus-like material produced from the aerobic decomposition of organic feedstocks, composted and cured until maturity. Compost shall be produced under the Compost Council of [http://www.compost.org/CQA-En.html Canada’s Compost Quality Alliance] (CQA) certification program through testing by an [http://www.omafra.gov.on.ca/english/crops/resource/soillabs.htm| OMAFRA accredited soil laboratory], and certified as category ‘AA’ under [https://www.ontario.ca/page/ontario-compost-quality-standards#section-2 Ontario Compost Quality Standards.] |
| <tr><td>pH</td><td>5.5 - 8.5</td></tr>
| | |
| <tr><td>Soluble Salts (EC)</td><td>< 4 mS/cm</td></tr>
| | <div class="toccolours mw-collapsible mw-collapsed"> |
| <tr><td>Moisture Content</td><td>< 50% by weight</td></tr>
| | '''Specifications for category 'AA' product under Ontario Compost Quality Standards''' |
| <tr><td>Organic matter</td><td>> 30% by dry weight</td></tr>
| | <div class="mw-collapsible-content"> |
| <tr><td>C/N ratio</td><td>12 to 22</td></tr><tr>
| | {| class="wikitable" |
| <td>Pathogens</td><td>OMOECC 2012</td></tr>
| | !Parameter |
| <tr><td>Maturity</td><td>OMOECC 2012</td></tr>
| | !Acceptable range |
| <tr><td>Particle size</td><td>100% < 12.7 mm (1/2”)</td></tr>
| | |- |
| <tr><td>Foreign Material</td><td>> 1.0% by dry weight > 3 mm<br>< 0.5% plastic by dry weight<br> no foreign matter > 25 mm per 500 mL<br> no sharp foreign matter that could cause harm to humans or animals.</td></tr>
| | |[[pH]]||5.5 - 8.5 |
| <tr><td>Arsenic</td><td>≤ 13 mg/kg dry weight</td></tr>
| | |- |
| <tr><td>Cadmium</td><td>≤ 20 mg/kg dry weight</td></tr>
| | |[[Soluble Salts]] (EC)||< 4 mS/cm |
| <tr><td>Chromium</td><td>≤ 210 mg/kg dry weight</td</tr>
| | |- |
| <tr><td>Cobalt</td><td>≤ 34 mg/kg dry weight</td></tr>
| | |Moisture Content||< 50% by weight |
| <tr><td>Copper</td><td>≤ 400 mg/kg dry weight</td></tr>
| | |- |
| <tr><td>Lead</td><td>≤ 150 mg/kg dry weight</td></tr>
| | |[[Organic matter]]||> 30% by dry weight |
| <tr><td>Mercury</td><td>≤ 0.8 mg/kg dry weight</td></tr>
| | |- |
| <tr><td>Molybdenum</td><td>≤ 5 mg/kg dry weight</td></tr>
| | |C/N ratio||12 to 22 |
| <tr><td>Nickel</td><td>≤ 62 mg/kg dry weight</td></tr><tr><td>Selenium</td><td>≤ 2 mg/kg dry weight</td></tr><tr>
| | |- |
| <td>Sodium, Percent Saturation</td><td>< 2%</td></tr>
| | |Pathogens||See: [https://www.ontario.ca/page/ontario-compost-quality-standards#section-2 MOECC 2012] |
| <tr><td>Zinc</td><td>≤ 700 mg/kg dry weight</td></tr><tr>
| | |- |
| </table>
| | |Maturity||See: [https://www.ontario.ca/page/ontario-compost-quality-standards#section-2 MOECC 2012] |
| | |- |
| | |Particle size||100% < 12.7 mm (1/2”) |
| | |- |
| | |Foreign Material||< 1.0% by dry weight > 3 mm<br>< 0.5% plastic by dry weight<br> no foreign matter > 25 mm per 500 mL<br> no sharp foreign matter that could cause harm to humans or animals. |
| | |- |
| | |Arsenic||≤ 13 mg/kg dry weight |
| | |- |
| | |Cadmium||≤ 3 mg/kg dry weight |
| | |- |
| | |Chromium||≤ 210 mg/kg dry weight |
| | |- |
| | |Cobalt||≤ 34 mg/kg dry weight |
| | |- |
| | |Copper||≤ 100 mg/kg dry weight |
| | |- |
| | |Lead||≤ 150 mg/kg dry weight |
| | |- |
| | |Mercury||≤ 0.8 mg/kg dry weight |
| | |- |
| | |Molybdenum||≤ 5 mg/kg dry weight |
| | |- |
| | |Nickel||≤ 62 mg/kg dry weight |
| | |- |
| | |Selenium||≤ 2 mg/kg dry weight |
| | |- |
| | |Sodium, Percent Saturation||< 2% |
| | |- |
| | |Zinc||≤ 500 mg/kg dry weight |
| | |} |
| | </div></div> |
| | [[Category:materials]] |
| | [[Category: testing]] |