Vancouver, British Columbia, August 31, 2026, Nevada Organic Phosphate Inc. (“NOP” or the “Company”) (CSE: NOP) (OTCQB: NOPFF), a B.C. based leader in organic sedimentary phosphate exploration, is pleased to announce that the heavy metal contaminant assays from the Upper Phosphatic Zone in drill hole MM26-10 at Murdock Mountain, continue to demonstrate results well below the maximum allowed limits for Organic Fertilizer Certification. MM26-10, a 1.5-kilometre step-out along strike at the Murdock Mountain project, returned another excellent intersection of 10.89% P2O5 over 3.60 metres. (See previous News Release dated August 26, 2026)
In the chart below, please note the SUIP #25 and the California values. NOP’s Upper Phosphate Zone values are significantly lower than the maximum heavy metal values allowed.
| California Heavy Metal Thresholds | 41 | 39 | 1500 | 17 | 75 | 420 | 300 | 100 | 2800 | |||||
| SUIP #25 for 10% P2O5 | 130 | 100 | 1360 | 10 | 420 | 2500 | 610 | 260 | 4200 | |||||
| DDH | Sample | From m | To m | P2O5% | As | Cd | Co | Cu | Hg | Mo | Ni | Pb | Se | Zn |
| MM26-10 | 1121787 | 194.00 | 195.00 | 8.45 | 9.9 | 3.25 | 2.6 | 24.3 | 0.185 | 4.32 | 66.6 | 4.4 | 2 | 238 |
| MM26-10 | 1121789 | 195.00 | 196.00 | 9.21 | 10.6 | 3.04 | 3.1 | 29.5 | 0.220 | 4.75 | 74.4 | 5.2 | 4 | 245 |
| MM26-10 | 1121790 | 196.00 | 197.00 | 16.20 | 9.0 | 2.61 | 2.5 | 25.9 | 0.202 | 5.60 | 62.5 | 5.3 | 5 | 221 |
| MM26-10 | 1121791 | 197.00 | 197.60 | 8.93 | 5.1 | 1.19 | 1.7 | 12.9 | 0.123 | 4.43 | 28.3 | 2.5 | 4 | 107 |
Note: the assays displayed above are the actual assays for each sample interval. Values are in ppm unless otherwise noted.
| DDH | UTME | UTMN | Elev m | TD m | Dip | Az |
| MM26-10 | 722868 | 4567500 | 2181 | 215.04 | -90 | 0 |
| coordinates are NAD83 UTM | ||||||
Robin Dow, CEO, stated: “This is another solid intersection from MM26-10 demonstrating that the Upper Phosphatic Zone continues to deliver predictable, clean, very low heavy metals content criteria suitable for Organic Certification. We continue tomeet our objectives, positioning NOP as a genuinely differentiated entrant in the fertilizer market.”
In the United States, organic certification is governed by the USDA National Organic Program (USDA-NOP). The USDA-NOP does not publish its own numeric heavy-metal limits for mineral fertilizers like rock phosphate. Instead, certifiers rely on two things:
- USDA-NOP 205.203(c) soil and plant amendments must not contaminate soil or crops with heavy metals.
- State fertilizer laws can vary, but almost universally adopt AAPFCO’s SUIP #25 Heavy Metal Rule for determining whether a fertilizer is adulterated (AAPFCO, Association of American Plant Food Control Officials, created SUIP #25 to give states a consistent, science-based method for regulating heavy metals in fertilizers. It is not a law, but most states adopt it into their fertilizer programs).
USDA Organic Certification: For organic production, a rock phosphate fertilizer must:
- Be mined, not chemically processed
- Not contain synthetic additives
- Not exceed heavy-metal levels that would contaminate soil or crops
- Typically meet SUIP #25 limits (this is what certifiers check)
If a product meets these limits, it is generally acceptable for organic certification.
SUIP #25 sets limits per 1% P₂O₅. For fertilizer with 10% P₂O₅, multiply limit by 10.
| Metal | Limit per 1% P2O5 | Limit per 10% P2O5 |
| Arsenic (As) | 13 | 130 |
| Cadmium (Cd) | 10 | 100 |
| Cobalt (Co) | 136 | 1,360 |
| Lead (Pb) | 61 | 610 |
| Mercury (Hg) | 1 | 10 |
| Molybdenum (Mo) | 42 | 420 |
| Nickel (Ni) | 250 | 2,500 |
| Selenium (Se) | 26 | 260 |
| Zinc (Zn) | 420 | 4,200 |
| Note: all values in ppm | ||
These are the maximum allowable concentrations before a phosphate fertilizer is considered adulterated under U.S. state fertilizer laws.
