Changes

<p>Compost shall be stable, humus-like material produced from the aerobic decomposition of organic feedstocks, composted and cured until maturity.  Compost shall be certified to comply with mandatory Ontario Compost Quality Standards for Category ‘AA’ or ‘A’ Compost for concentrations of the 11 regulated metals, pathogens, foreign matter, maturity and labelling (OMOECC 2012) and Canadian Food and Inspection Agency (CFIA) regulations T-4-93 (CFIA 1997a) and T-4-120 (CFIA 1997b). </p>

STEP are currently undertaking research into the quality of compost for use in LID installations.

<table class = "table table-striped table-responsive">

<div class="toccolours mw-collapsible mw-collapsed">

<caption><strong>Specifications</strong></caption>

'''Specifications for category 'AA' product under Ontario Compost Quality Standards'''

<tr class ='success'><th>Parameter</th><th>Acceptable range</th></tr>

<div class="mw-collapsible-content">

<tr><td>pH</td><td>5.5 - 8.5</td></tr>

{| class="wikitable"

<tr><td>Soluble Salts (EC)</td><td>< 5 mS/cm</td></tr><tr><td>Moisture Content</td><td>< 50% by weight</td></tr>

!Parameter

<tr><td>Organic matter</td><td>> 30% by dry weight</td></tr>

!Acceptable range

<tr><td>C/N ratio</td><td>12 to 22</td></tr><tr> 

<td>Pathogens</td><td>OMOECC 2012</td></tr>

|[[pH]]||5.5 - 8.5

<tr><td>Maturity</td><td>OMOECC 2012</td></tr>

<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>

|[[Soluble Salts]] (EC)||< 4 mS/cm

<tr><td>Arsenic</td><td>≤ 13 mg/kg dry weight</td></tr>

<tr><td>Cadmium</td><td>≤ 20 mg/kg dry weight</td></tr>

|Moisture Content||< 50% by weight

<tr><td>Chromium</td><td>≤ 210 mg/kg dry weight</td</tr>

<tr><td>Cobalt</td><td>≤ 34 mg/kg dry weight</td></tr>

|[[Organic matter]]||> 30% by dry 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>

|C/N ratio||12 to 22

<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>

|Pathogens||See: [https://www.ontario.ca/page/ontario-compost-quality-standards#section-2 MOECC 2012]

<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>

|Maturity||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>

|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

The Contractor shall submit to the Owner’s Representative a 4L sample, with laboratory testing results or quality assurance documentation certifying that the material or product meets the requirements.

|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: testing]]