| CLASS I | CLASS II | |
|---|---|---|
Minimum Stability Indicator |
Stable - Very Stable |
Stable |
pH |
6.0 - 8.0 | 6.0 - 8.2 |
Ag Index (Nutrients/Na+CI) |
Must report | Must report |
Soluble Salts |
Maximum 5 mmhos/cm | Maximum 10 mmhos/cm |
Carbon / Nitrogen Ratio |
< 12 | < 18 |
Ammonia-N / Nitrate-N |
< 4 | < 6 |
Bulk Density (lbs/CY) |
Must report | Must report |
Primary, Secondary,Trace Elements |
Must report | Must report |
Organic Matter; Moisture Content (% / CY) |
Must report | Must report |
Certified compost material must meet a minimum of Class II specification. New soil amendment products are subject to approval by Denver Water.
Send qualifying product soil nutrient test to:
Or:
Denver Water
Attention: Conservation SA
1600 W. 12th Avenue
Denver, CO 80204-3412