Nevada Organic Phosphate Reports Continued Excellent Low Heavy Metal Assays for Drill Hole MM26-9 at Murdock Mountain

Rhea-AI Summary

Nevada Organic Phosphate (CSE: NOP, OTCQB: NOPFF) reported that heavy metal assays from the Upper Phosphatic Zone in drill hole MM26-9 at the Murdock Mountain project remain well below the maximum limits commonly applied for organic fertilizer certification, including AAPFCO SUIP #25 and California standards for a 10% P₂O₅ fertilizer.

The Murdock Mountain weighted-average suite shows, for example, arsenic at 8.5 ppm and cadmium at 3.0 ppm, versus SUIP #25 limits of 130 ppm and 100 ppm respectively. According to Nevada Organic Phosphate, MM26-9 intersected a true thickness of 4.48 m grading 10.73% P₂O₅ in the Upper Phosphate Zone, reinforcing grade continuity and low contaminant levels across multiple holes. All samples were analyzed by ISO/IEC 17025:2017-accredited ALS using four‑acid digestion and ICP-MS/ICP-AES, with rigorous QA/QC including blanks and certified reference materials. Technical information was reviewed by Qualified Persons Garry K. Smith, P.Geo., and independent geologist Kenneth N. Tullar.

Positive

• MM26-9 Upper Phosphate Zone intersected 10.73% P₂O₅ over 4.48 m true thickness
• Murdock Mountain weighted-average arsenic and cadmium at 8.5 ppm and 3.0 ppm vs SUIP #25 limits of 130 ppm and 100 ppm
• Murdock Mountain weighted-average mercury and lead at 0.205 ppm and 4.7 ppm vs SUIP #25 limits of 10 ppm and 610 ppm
• Independent ISO/IEC 17025:2017-accredited lab ALS performed four-acid ICP-MS/ICP-AES assays with blanks and CRMs supporting data reliability

Negative

• None.

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VANCOUVER, BC, July 20, 2026 /PRNewswire/ -- 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 MM26-9 at Murdock Mountain continue to demonstrate results well below the maximum allowed limits for Organic Fertilizer Certification.

In the chart below, please note the Murdock Mountain Weighted Average row and compare those values to the SUIP #25 and the California values. NOP's Upper Phosphate Zone is significantly lower than the maximum heavy metal values allowed.

			As	Cd	Co	Cu	Hg	Mo	Ni	Pb	Se	Zn
SUIP #25 max allowed for 10% P2O5:			130	100	1360		10	420	2500	610	260	4200
California max allowed for 10% P2O5:			20	40						200
Murdock Mountain Weighted Average:			8.5	3.00	2.1	23.6	0.205	8.69	77.2	4.7	11	232
P2O5 Grade Interval	P2O5%	Sample	As	Cd	Co	Cu	Hg	Mo	Ni	Pb	Se	Zn
	4.55	977123	12.9	3.89	2.0	21.5	0.197	7.39	95.2	4.3	16	359
MM25-1	10.85	977124	12.7	4.52	2.0	29.7	0.267	10.05	92.8	5.2	16	315
10.23/4.61m	17.80	977126	9.9	2.52	1.9	27.7	0.246	11.65	84.1	6.0	17	267
	11.80	977127	8.8	1.55	1.3	17.5	0.160	11.95	56.4	3.5	8	195
	4.72	977128	8.8	1.93	2.6	23.7	0.148	6.17	82.2	4.0	11	242
Intersection weighted average			10.4	2.80	1.7	25.1	0.225	11.24	78.1	5.0	14	259
	7.54	977071	6.7	2.77	2.8	19.2	0.202	6.41	65.1	4.1	13	128
MM25-2	8.46	977072	8.8	3.57	3.4	28.4	0.247	9.32	91.2	5.0	29	181
10.70/4.31m	17.20	977073	8.2	3.69	2.1	27.5	0.230	8.41	97.9	5.6	7	308
	9.91	977074	6.4	3.94	1.8	28.4	0.208	9.71	87.3	5.4	28	237
	10.90	977076	8.3	1.12	1.5	14.4	0.157	4.19	53.8	3.1	5	173
Intersection weighted average			7.6	2.90	2.3	22.7	0.204	7.30	76.5	4.5	15	200
	7.14	977163	8.5	2.22	2.4	17.6	0.169	6.56	57.9	4.0	11	206
MM25-3	8.70	977164	8.6	3.39	2.2	28.7	0.223	9.02	81.6	4.8	10	232
11.12/4.23m	15.60	977165	8.1	5.39	2.4	28.1	0.202	9.33	101.5	5.5	4	267
	16.35	977166	7.2	2.39	2.4	15.2	0.167	4.05	75.1	3.7	3	192
Intersection weighted average			8.2	3.20	2.3	22.7	0.193	7.33	77.3	4.5	8	222
	5.28	1121685	7.9	2.28	2.1	18.4	0.168	6.08	53.4	4.4	9	162
MM26-9	9.94	1121686	9.5	4.65	3.1	26.0	0.226	10.15	92.7	5.2	9	329
10.73/4.50m	15.10	1121687	9.0	3.02	2.1	29.8	0.233	12.65	100.5	6.1	7	300
	10.65	1121688	4.8	2.77	1.4	18.8	0.146	5.18	51.5	4.0	10	169
Intersection weighted average			7.9	3.20	2.2	23.9	0.197	8.89	76.9	5.0	9	245
drilled thickness						all values in ppm

Note: The assays displayed above are the actual assays for each sample interval; the weighted averages are calculated over the whole intersection.

Robin Dow, CEO stated: "This is another solid intersection from MM26‑9 demonstrating that the Upper Phosphatic Zone continues to deliver predictable, consistent P₂O₅ grades and thicknesses, while also meeting the clean, very low heavy metals content criteria for Organic Certification. We continue to meet our objectives, positioning NOP as a genuinely differentiated entrant in the fertilizer market."

Garry Smith, P.Geo and Director added: "MM26‑9 intersected a strong 10.73% P₂O₅ over 4.48 metres (true thickness) of Upper Phosphate Zone, reinforcing both the grade continuity we are working to define across the trend plus confirming continued clean, very low heavy metal contaminant assay results. We are excited to continue advancing Murdock Mountain in the coming months and to begin evaluating the Upper Phosphate Zone on our additional permit application areas."

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:

1. USDA-NOP 205.203(c) soil and plant amendments must not contaminate soil or crops with heavy metals.
   
   
2. 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 (ppm)	Limit per 10% P₂O₅   rock phosphate (ppm)
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

These are the maximum allowable concentrations before a phosphate fertilizer is considered adulterated under U.S. state fertilizer laws.

Lab Assaying Methods & QA/QC

All sample preparation and analytical work was carried out by ALS Laboratories ("ALS"), an independent commercial laboratory accredited to ISO/IEC 17025:2017 for mineral analysis. Samples were delivered to the ALS Geochemistry in Elko, Nevada preparation facility and then forwarded to ALS Geochemistry in Vancouver for analysis. ALS operates under rigorous quality management systems and is regularly audited by recognized accreditation bodies, including the Standards Council of Canada (SCC) and the Canadian Association for Laboratory Accreditation (CALA).

Heavy metal assaying was by ME-MS61 trace element analysis: Samples were digested using a near-total four-acid procedure (HF; HNO₃; HClO₄; HCl) and analyzed by ICP-MS and ICP-AES. This technique delivers ultra-trace detection of a broad suite of elements, including deleterious or contaminant metals such as arsenic, cadmium, mercury, and lead, supporting environmental and processing assessments.

ALS maintains strict internal QA/QC protocols, including the insertion of certified reference materials, blanks, and duplicates with each batch of samples. These measures ensure that analytical results meet internationally recognized standards of accuracy and reliability, consistent with the requirements of NI 43-101 reporting.

Company Quality Assurance / Quality Control (QA/QC)

The Company implemented a rigorous QA/QC protocol consistent with NI 43-101 standards, including the insertion of blanks and certified reference materials into the sample stream.

Blanks: The Company regularly inserted a blank comprised of generically sourced sand every 11 samples (or 9.3%) to monitor potential contamination during sample preparation and analysis.

Certified reference materials ("CRM"): CRMs used in mineral exploration are used to assess analytical accuracy and are usually rock powders comprised of known concentrations of the metal(s) of interest. CRMs are usually obtained from commercial suppliers who provide the average of many analyses of the CRMs by multiple labs, which is referred to as the certified value, and a standard deviation of the analyses from which the certified value is determined. A typical criterion for accepting the analyses of CRMs in the mineral industry is that they should fall within a range determined by the certified (or "target") value ± three standard deviations ("3 STD"). Analytical accuracy was verified against BAM 826-1, a certified reference material for phosphate slags issued by Germany's Federal Institute for Materials Research and Testing (BAM). The Company inserted BAM 826-1 CRM standards every 22 samples (or 4.5%), or about 2 per drill hole.

The Company is satisfied that the QA/QC results demonstrate the reliability of the assay data and support the integrity of the phosphate grades reported herein.

Qualified Persons

The interpretation of the technical information in this news release has been reviewed and approved by Garry K. Smith, P.Geo., a director of NOP and a Qualified Person as defined under National Instrument 43 101 – Standards of Disclosure for Mineral Projects.

All assays and detailed core logging interpretation has been provided by the Independent Qualified Person for this drill program, Kenneth N. Tullar, AIPG Certified Professional Geologist (CPG 11142). Mr. Tullar has reviewed and approved the technical data in this news release.

Nevada Organic Phosphate Inc. (CSE: NOP) (OTCQB: NOPFF)

NOP is a junior exploration company with an organic sedimentary raw rock phosphate bed, 6.6 kilometres long, in northeast Nevada. Additional applications extend the potential strike of rock phosphate to over 30 kilometres. This is believed to be the only known large-scale organic sedimentary phosphate project in North America. It is situated close to the main highway to Montello/Elko, Nevada, and near the rail head to California or the East Coast.

Neither the Canadian Securities Exchange nor its regulations services providers have reviewed or accept responsibility for the adequacy or accuracy of this release.

This news release may contain forward-looking statements and information ("FLSI") within the meaning of applicable securities laws.  FLSI may include expectations, anticipations, beliefs, opinions, plans, intentions, estimates, forecasts, projections, guidance or other similar statements and information that are not historical facts.  All statements which are not historical statements are considered FLSI.  All FLSI is based on assumptions, which may prove inaccurate, and subject to certain risks and uncertainties, including without limitation those risks and uncertainties identified in the Company's public securities filings, which may cause actual events or results to differ materially from those indicated or implied in FLSI.  Accordingly, readers should not place undue reliance or value on FLSI.  Although the Company believes that the expectations reflected in any FLSI in this news release are reasonable at the present time, it can give no assurance that such FLSI will prove to be correct.  Any FLSI in this news release is made as of the date hereof and the Company undertakes no obligations to publicly update or revise any FLSI, whether as a result of new information, future events or otherwise, unless required by applicable securities laws.  Any FLSI in this news release is expressly qualified in its entirety by this cautionary statement.

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SOURCE Nevada Organic Phosphate Inc.

FAQ

What did Nevada Organic Phosphate (NOPFF) report for drill hole MM26-9 on July 20, 2026?

Nevada Organic Phosphate reported that MM26-9 cut 10.73% P₂O₅ over 4.48 metres true thickness in the Upper Phosphate Zone. According to Nevada Organic Phosphate, the hole also returned very low heavy metal assays, supporting grade continuity and clean chemistry at the Murdock Mountain phosphate project.

How do Murdock Mountain heavy metal assays compare to SUIP #25 limits for NOPFF?

Murdock Mountain weighted-average heavy metals are well below SUIP #25 limits for a 10% P₂O₅ fertilizer. According to Nevada Organic Phosphate, arsenic averages 8.5 ppm and cadmium 3.0 ppm, versus SUIP #25 maximums of 130 ppm arsenic and 100 ppm cadmium for comparable phosphate products.

Are Nevada Organic Phosphate’s MM26-9 assays consistent with California fertilizer limits?

Nevada Organic Phosphate reported that weighted-average heavy metal values from Murdock Mountain are below listed California maximums for a 10% P₂O₅ fertilizer. According to Nevada Organic Phosphate, this includes conservative thresholds for elements such as arsenic, cadmium and lead that many organic certifiers reference when reviewing mineral fertilizers.

What lab methods were used to analyze NOPFF Murdock Mountain samples?

All Murdock Mountain samples were analyzed by ALS, an ISO/IEC 17025:2017-accredited lab, using ME-MS61 four-acid digestion and ICP-MS/ICP-AES. According to Nevada Organic Phosphate, ALS applied rigorous QA/QC, including certified reference materials, blanks and duplicates to support analytical accuracy and reliability.

How does Nevada Organic Phosphate verify QA/QC for its MM26-9 drill assays?

Nevada Organic Phosphate used blanks and certified reference materials within the sample stream to monitor accuracy and contamination. According to Nevada Organic Phosphate, blanks were inserted about every 11 samples and BAM 826-1 phosphate CRM about every 22 samples, meeting typical NI 43-101 QA/QC practice.

Who reviewed the technical data for Nevada Organic Phosphate’s July 20, 2026 release?

The technical interpretation was reviewed and approved by Garry K. Smith, P.Geo., as Qualified Person. According to Nevada Organic Phosphate, all assays and detailed core logging were provided and approved by independent Qualified Person Kenneth N. Tullar, AIPG Certified Professional Geologist, for the Murdock Mountain drill program.