Ag Chemical & Fertilizer Division


W Design Associates is a leader in providing engineering and architectural services to the fertilizer and ag chemical industry.  We have completed hundreds of projects throughout the central and western United States ranging in size from on farm facilities to multi-million dollar terminal and hub facilities.  In addition, we have worked with regulatory agencies in multiple states to successfully obtain approval for new and/or alternate designs, such as internally lined liquid fertilizer tanks.

Services provided include:

  • Site design
  • Containment design
  • Liquid and dry loadin/loadout design for truck, rail and ship
  • Fertilizer and ag chemical plumbing design
  • API 650 tank design
  • Tank foundation design
  • Storage and loadout facility design
  • Warehouse and office design
  • Inspection services
  • Materials testing services
  • Construction administration services

W Design Associates offers concept to completion A/E services, from one source, for your new fertilizer and/or ag chemical facility.

Recent Projects

Project:  Liquid Fertilizer and Ag Chemical Facility
Owner:  Ag Valley CO-OP
Location:  Edison, Nebraska

Aerial photo of site

This project is a completely new liquid fertilizer and ag chemical retail and storage facility located in Edison, Nebraska.  It was designed to replace three smaller facilities and serve as a distribution center for other Ag Valley facilities in Southwest Nebraska.  It included a large containment dike for liquid fertilizer, a liquid fertilizer unit train rail unload, a new five bay loadout facility with overhead tanks, a chemical warehouse and an agronomy office.  The facility was let in multiple contracts to save both time and money.  Separate contracts included site grading, dike lining, tank construction, tank moving, building construction and plumbing and automation.

Project:  New Liquid Fertilizer Terminal & Loadout Facility
Owner:  Crop Production Services
Location:  Slaton, Texas

Photo of site

This project is a completely new liquid fertilizer terminal and loadout facility located in Slaton, Texas.  The project consisted of the complete regrading of the site for drainage and access to new structures.  A new earthen containment dike liked with a 45 mil. polypropylene liner was constructed as a secondary containment.  Liquid fertilizer storage tanks within the dike consisted of one 10,000 ton (2m gal.) tank, one 5,000 ton (1m gal.) tank, one 2,500 ton (500k gal.) tank and one 1,500 ton (300k gal.) tank.  The earthen containment dike was designed with the ability to add three additional fertilizer tanks when the need arises.

A new 7,800 sq. ft. fertilizer loadout building with the design features of two loadout bays, with a loadout pumping capacity of 500 gpm, an elevated control room, blender and storage for dry fertilizer was constructed adjacent to the containment dike.  The structural, mechanical, electrical and special systems were all designed in house by W Design Associates.

A ten car rail unload was constructed by utilizing an existing rail spur to the south of the new containment dike with an unload pumping capacity of 1,000 gpm.  All plumbing between the rail unload, fertilizer tanks and loadout building consisted of high density polyethylene pipe (HDPE).

Project:  New Liquid Fertilizer Loadout Facility
Owner:  Southwest Crop Liquids, L.L.C.
Location:  Ensign, Kansas

Image of tanks and loadout building

This project is a new liquid fertilizer loadout facility located in Ensign, Kansas.  The project consisted of three 5,000 ton (1m gal.) tanks and a loadout building.  The three new fertilizer tanks feature a 40 mil. internal liner as the primary containment which was approved by the State of Kansas as an "alternate" design.  The internal liner installer, Heartland Tank Services, Inc. has worked with WDA on similar projects throughout the United States.

A new 3,850 sq. ft. fertilizer loadout building included design features of two loadout bays, control/electrical room, pump room and overhead tank structure with tanks to direct load into a waiting truck.  The structural, mechanical, electrical and special systems were all designed in house by W Design Associates.

A 66 car rail unload was also constructed by utilizing two existing rail spurs with an unload capacity of 1,700 gpm.  All plumbing between the rail unload, fertilizer tanks and loadout building consisted of double walled high density polyethylene pipe (HDPE).

Project:  Central Valley Ag
Reference:  Gary Voichahoske, Manager
Location:  Monroe, Nebraska

Aerial photo of site

The project is a 22,400 sq. ft. liquid fertilizer warehouse terminal completed in 2006.  The entire project cost $870,000+.  The structural, mechanical, electrical and special systems were all designed in house by W Design Associates.

Design features include three fertilizer loadout bays, one that is accessible 24 hour a day.  The loadout bays are equipped with a steel overhead tank structure that assists in expeditious delivery of fertilizer and chemicals.  The building includes an elevated control room, finished break room and a heated storage room.  The warehouse size provides for maximum versatility for the demands of an ever changing agricultural industry.

Project:  New Fertilizer Liquid Blending Facility
Owner:  Helena Chemical Co.
Location:  Pasco, Washington

Image of mix pad tanks

This project is a new liquid fertilizer blending facility located in Pasco, Washington.  The fertilizer containment dike utilized pre-manufactured panels with a 30 mil. polypropylene interior liner as the secondary containment.  The liquid fertilizer storage tanks within the dike consisted of 13 horizontal 35,000 gal. salvaged beer tanks.  A concrete chemical dike with a bulk storage area is located to the north of the containment dike with two horizontal 35,000 gal. tanks.

A new exterior mix pad was located on the east side of the existing rail spur.  The mix pad has two liquid loadout pads and one dry fertilizer loadin pad around its perimeter.  The loadout pads have overhead tank structures with two tanks each to direct loadout into a waiting truck.  The mix pad consists of two blenders, four dry fertilizer tanks, seven liquid fertilizer tanks and an elevated control/electrical room in one building and a boiler in the other.  The structural, mechanical, electrical and special systems were all designed in house by W Design Associates.

Fertilizer plumbing between the fertilizer containment dike and the mix pad was run above the existing rail spur due to site restrictions, by using two 500 gpm pumps.  All plumbing between the dike and mix pad consisted of high density polyethylene pipe (HDPE).

Project:  Agronomy Self-Service Facility
Owner:  Cargill Ag Horizons
Location:  Ravenna, Nebraska

Image of loadout building with tanks

This project is a new fully automated self-service liquid fertilizer and ag chemical storage and loadout facility located east of Ravenna, Nebraska.

It was designed so a customer could place an order for fertilizer and quantity online, visit the site for loading, drive a truck into one of two loadout bays and load their equipment without the need for additional personnel to run the site.

It includes a large containment dike with one 2,500 ton, one 1,500 ton, four 100 ton tanks, a new two bay automated loadout building and customer building.

The project was let in separate contracts that included site grading, dike lining, tank construction, building construction, process plumbing and automation.

Project:  New Liquid Fertilizer Terminal
Owner:  Co-Alliance
Location:  Scircleville, Indiana

This project is a new liquid fertilizer terminal facility located in Scircleville, Indiana.  The project consists of one 10,000 ton (2m gal.) fertilizer tank, a two bay fertilizer loadout building and rail car unload.  The new fertilizer tank features a 40 mil. internal liner as the primary containment.  The interal liner installer, Heartland Tank Services, Inc. has worked with WDA on similar projects throughout the United States.

A new 4,900 sq. ft. fertilizer loadout building included design features of two loadout bays, control/electrical room, pump room with a loadout capacity of 500 gpm and equipment storage areas.  The structural, mechanical, electrical and special systems were all designed in house by W Design Associates.

A 20 car rail unload was also constructed by utilizing two existing rail spurs with an unload capacity of 1,100 gpm.  All plumbing between the rail unload, fertilizer tank and loadout building consisted of high density polyethylene pipe (HDPE).

Site Plan - select to enlarge