DuPont Ready Mix Plant and Pioneer Aggregate Plant

With more than 130 years of experience serving contractors, engineers, and builders, CalPortland delivers high-quality aggregates and high-performance ready mixed concrete backed by technical expertise, rigorous quality standards, and reliable local service, including:

• Exceptional aggregate quality – The deposit consists of extremely high-quality aggregates, making it unique within the Pacific Northwest.
• Advanced fractionation capabilities – The plant can separate aggregates into closely graded individual stockpiles and then blend them to meet a wide range of precise product specifications.
• Flexible loading and distribution – The facility can load both trucks and barges, with barge loading rates of up to 2,400 tons per hour. Aggregate products are shipped throughout the Puget Sound area and to Oregon, British Columbia, Alaska, and the South Pacific.
• Ready-mix concrete production – The plant also produces high-quality ready-mixed concrete for the surrounding area.

What you can expect from CalPortland:

• Proven Expertise – Decades of experience supporting residential, commercial, industrial, and public works projects of every scale and complexity.
• Quality Assurance – ASTM-certified materials, robust laboratory testing, and strict quality control processes that ensure consistent performance and durability.
• Technical Support – Knowledgeable concrete specialists who collaborate with your team on mix design, troubleshooting, and constructability.
• Reliable Supply & Logistics – On-time delivery, strategically located plants, and modern fleet capabilities to keep your project on schedule.
• Customized Mix Solutions – From standard structural mixes to specialty concretes (high-strength, pervious, self-consolidating, decorative, and sustainable mixes with SCMs).
• Broad Product Selection – Full lines of crushed stone, concrete sand, masonry sand, gravel, and specialty high-performance aggregates.
• Commitment to Safety & Sustainability – Responsible operations, low-emission practices, and continuous improvement in environmental performance.

When you partner with CalPortland, you gain more than a concrete supplier–you gain a technical partner invested in your project’s success.

Washington State DOT, Pit #B-335