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ENVIRONMENTAL ENGINEERING

One of the most critical issues facing our world is the future of our environment. A combination of government regulations and society's growing concerns has prompted new strategies for the treatment of our water, air and other precious resources.

Bolton & Menk, Inc. has been a leader in providing environmental engineering services for more than fifty years. An experienced staff, always striving to keep up to date with the latest design methods and state-of-the-art technology, provides total project assistance from the initial evaluation, studies and design, to construction administration and start-up operations.

Bolton & Menk's concern for schedules and cost control has been very successful at producing cost-effective and timely products that meet the needs of our clients, while maintaining the firm's ongoing commitment to engineering excellence. Service to the client is a priority at Bolton & Menk. Each project, regardless of its size or cost, is treated with the full attention and dedication of our staff.

Water Supply & Treatment

Water supply is intrinsically linked to our communities’ health and well-being. At Bolton & Menk, we strive to provide pro-active planning and design services which meet each community’s needs. These include developing plans to meet regulatory requirements, as well as system-wide capacity needs.

The staff of Bolton & Menk are well-versed in the regulatory requirements of drinking water supply and treatment, and apply practical experience to solving water supply and treatment problems.

Water supply and treatment services include the following:

  • Water utility studies and master plans
  • Development of ground water and surface water supplies
  • Water storage and distribution system design
  • Hydraulic analysis of distribution systems
  • Instrumentation and control system design
  • Water treatment facility design
  • Water rate studies
  • Construction engineering services
  • Technical operations assistance

Wastewater Collection & Treatment

As we enter the twenty-first century, people are increasingly concerned and determined that the earth’s precious resources be protected and preserved, particularly the resource of water. Bolton & Menk offers the full range of wastewater collection and treatment services. An experienced staff with the latest design methods and state-of-the-art technology provides total project assistance.

Wastewater collection and treatment services include the following:

  • Collection system analysis and design
  • Collection system rehabilitation design
  • Lift station design
  • Wastewater treatment facility design
  • Construction engineering services
  • Technical operations assistance
  • Process control system design
  • Industrial pretreatment program development

Industrial Waste Treatment

Industrial waste treatment requires the use of engineering and scientific principles to find solutions to unique chemical, biological and environmental problems. The staff at Bolton & Menk have extensive education and experience in biology, organic and physical chemistry and environmental engineering. In addition to a full engineering staff, experts from universities and industry are frequently consulted and retained for specialized expertise.

Bolton & Menk provides professional services to various food processing industries and is responsive to the special needs of industrial clients, striving for timeliness and providing effective overall project management.

Bolton & Menk's staff members are familiar with state and federal environmental regulations and often assist industries in discussions with regulatory officials.

Industrial waste engineering services include the following:

  • Pretreatment studies, process and facility designs
  • Industrial water and waste comprehensive studies
  • Water conservation programs
  • Pilot studies
  • Physical/chemical and biological process and facility designs
  • Construction engineering services
  • Technical operation assistance
  • Environmental regulation reviews


St. Peter Wastewater Treatment Facility
Project Photo
The City of Saint Peter and Bolton & Menk, Inc. worked together over a 10-year period to develop and implement plans for an advanced technology wastewater treatment system incorporated into a single structure that meets the needs of the City of Saint Peter for years to come.

The City of Saint Peter operated the largest stabilization pond treatment system in the state. This facility, located in the flood plain of the Minnesota River, was inundated with floodwaters on numerous occasions. Due to the environmental impacts of these flood events, the City began work to relocate the wastewater treatment operations. This planning was further accelerated by the 1998 tornado, which created the need for rebuilding much of the city's infrastructure.

A site within the city's industrial park was chosen for the wastewater treatment facility, maximizing the use of existing public infrastructure and city owned property.
Bolton & Menk, Inc. developed a practical and cost-effective plan using new technology – Biological Aerated Filters (BAF) and parallel plate clarifiers for wastewater treatment, and lime heat stabilization for biosolids treatment. The compact size of the treatment processes allowed for the facility to be constructed within a single structure, meeting public expectations. The system removes BOD, ammonia and phosphorous below standards. The lime/heat pasteurization process treats biosolids to a 'Class A" level. This process reduces the amount of storage required for biosolids and increases the options for biosolids disposal and reuse.
A schematic diagram of the Upflow Biological Filter cell and a photograph of the biosolids treatment process are presented below.

In addition, the following wastewater treatment process improvements were implemented: new lift station and forcemain; new grit removal and screenings facilities; new UV facilities; new outfall; new on-site dewatered biosolids storage facility; new standby generator; odor control facility; and a new computer control system.
The project was completed on time and within budget. Saint Peter's new facility complies with the wastewater discharge limits for the Minnesota River. This facility serves as a successful new model for implementation of wastewater treatment technology.



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