Koch Nitrogen Company — Marshalltown
Marshalltown, IA 50158
3046 Garwin Road, Marshalltown, IA 50158
NH3 / Anhydrous AmmoniaKoch Nitrogen Company
Current Status
No recent driver report
Be the first driver to report conditions here.
Terminal phone
Phone number not available
Business and terminal lines only — never post a driver’s personal number.
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Administrator-confirmed truck pin · administrator confirmed
3046 Garwin Road, Marshalltown, IA 50158
Also known as: Koch Fertilizer Marshalltown Terminal · Marshalltown NH3
Driver Access · Truck Entrance
Truck entrance per the administrator-supplied Google Maps pin at 3046 Garwin Road.
Loading rack
Rack location not confirmed yet.
Administrator confirmed information
Loading Hours
Loading Hours: Not Yet Verified
Racks generally load 24/7 for authorized drivers, but 24/7 access has not been confirmed for this terminal.
Transport racks generally load 24/7 for authorized, checked-in drivers. Business-office hours are not rack hours — an office being closed does not mean the rack is closed.
Official status: Unconfirmed — call ahead
Rack down, out of product, or on restricted hours right now? Use the driver report above so other drivers see it.
Facilities · Parking & Bathroom
Overnight parking
UNKNOWN
Bathroom
UNKNOWN
Driver-Verified Information
Driver verified · 2026-08-20
Gate access
Not reported yet
Loading racks
Not reported yet
Bathroom
Not reported yet
Kiosk location
Not reported yet
Overnight parking / sleeping
Not reported yet
PPE requirements
Standard NH3 terminal PPE required. Carry an approved respirator, chemical-resistant coat, gloves and goggles.
Loading procedure
Not reported yet
Shutdown / completion procedure
Not reported yet
Driver notes
Iowa DNR Facility Explorer record.
Loading Information
NH3 distribution terminal; truck load-out for regional ag retailers; drivers must check in, provide documentation, follow site safety/PPE requirements.
Iowa DNR Facility Explorer record.
Administrator confirmed · updated 2026-08-20 · source
Live Driver Reports
Driver-reported and timestamped — not official facility information.
Nothing reported yet.
Ask Drivers
Can you sleep here overnight?
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Which entrance do transports use?
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Are bathrooms available to drivers?
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Is there usually a long wait?
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Disclaimer
Gas & Smoke provides driver-reported and available facility information for informational purposes only. Product availability and terminal operations can change at any time — a terminal may run out of product, have a rack outage, shut down, or restrict loading without notice. Always follow the terminal’s official instructions and communications. Gas & Smoke does not guarantee product availability and is not responsible if a terminal runs out of product, shuts down, or changes loading availability.