Currently - Hoelscher Engineering, P.C. continues its ongoing design-build effort to complete the design and preparation of improvement plans and permits for the construction of the U.S. Air Force Aeromedical Evacuation Facility. The $7.4 Million project will service the 375th Air Mobility Wing's Aeromedical Squadron responsible for transporting sick and injured troops from around the world.

Key components of the project included underground detention, incorporation of threat protection setbacks, and a detailed Storm Water Pollution Prevention Plan. The project is slated for completion in 2012.

Caterpillar, Inc. - East Peoria Plant Stormwater and Industrial Waste System Modeling

Currently - The Caterpillar East Peoria plant consists of over 1,200 acres. Numerous areas were experiencing surcharging through the stormwater and industrial waste systems (IW). Comprehensive field surveys were completed to determine accurate configurations of each system including inlets, pipe characteristics, pumps, detention areas, roof drains, and outlet conditions. Detailed models have been and are being developed to evaluate the existing systems (stormwater and IW) to identify the likely causes of the surcharging and flooding. The modeling involves using specialized software, "SSA", to analyze the hydraulic response for the entire plant site. The model components, as of January 2011, include over 500 individual system components including the impact from the runoff via roof downdrains. It is anticipated that the final comprehensive model for the entire plant site will include over 2,500 components including wetlands and the interactions with complex off-site watersheds. The ultimate purpose for the comprehensive model will be used to it to design and implement improvements and revisions to the storm and IW systems.

Fort Campbell - Medical and Dental Clinic

Currently - Hoelscher Engineering, P.C. partnered with a design-build contractor to complete the design and preparation of improvement plans and permits for the construction of the U.S. Army Fort Campbell Medical and Dental Clinic. The $15 Million project will service the entire Fort Campbell (Kentucky and Tennessee) complex and provide over 50 medical and dental offices, as well as another 50 treatment and exam rooms.

The construction site encompassed a 43,000 square foot building, constructed on 17 acres. Key components of the project included bioretention, level spreaders, and a detailed Storm Water Pollution Prevention Plan.

Give the success of the existing project, Hoelscher Engineering has been retained to complete a 15,000 square foot building addition and parking expansion slated for completion in 2011.

Belle Valley School

Currently - Hoelscher Engineering, P.C. was retained to prepare improvement plans and permits for the construction of the Belle Vally Prekindergarten through 8th Grade School.

Hoelscher Engineering issued two separate building packages for early grading, and the building and trades plans.

Naval Facilities Engineering Command (NAVFAC) - Special Weapons Assessment Facility (SWAF) - Naval Support Activity - Crane, Indiana

September, 2010 - The Naval Surface Warfare Center located on over 100-square miles at Crane, Indiana is the 3rd largest naval installation in the world.

Hoelscher Engineering provided civil engineering services for the replacement of a 7,600 square foot Special Weapons Assessment Facility (SWAF) along with an adjacent three cell operations building containing approximately 835 square feet, two Type E box magazines, new target emplacements on the right side of the range at 100, 200, 300, 600, 1,000 and 1,400 yards from the building firing line, firing points, backstops, and ballistic protection screen wall.

Woodlake Dam Design of Modifications and Lake Dredging

August, 2010 - Woodlake Dam is a high hazard earth embankment dam which had a falling CMP spillway system. The embankment is 30-feet in height and has an earth cut emergency spillway in the left abutment area. Evaluations of the capacity of the existing spillway system were completed using HEC-HMS to determine that the existing spillway did not meet the requisite Illinois dam safety criteria. A new reinforced concrete drop inlet principal spillway, outlet conduit and plunge pool was sized and designed using HEC-HMS and HY-8 to provide the required spillway capacity. An integral dewatering system has also designed and incorporated into the upstream face of the embankment was designed using standards provided in the Corps of Engineers document ETL 1110-2-222. All structural design for the principal spillway was completed in accordance applicable ACI codes and Illinois dam safety requirements. In conjunction with the designed modifications for the dam, a lake sediment evaluation was completed and a dredging plan was developed and implemented to restore the original lake depths.

O'Fallon Township High School - Milburn Campus

July, 2009 - Hoelscher Engineering, P.C. was retained to perform surveying, analyses, design, and prepare improvement plans and permits for the construction of the $40 Million O'Fallon Township High School - Milburn Campus. The freshman campus is designed to accommodate future expansion into a full-service high school facility. Project design included over 50-acres of site improvements with an approximately 166,450 square-foot building. Other site highlights included parking for 400 vehicles, a retention lake, traffic signal and turn-lane additions, football field, baseball field, and soccer field.

For this project, a collaborative approach was established early on with the architect and construction manager. In order to meet the challenging construction timelines, Hoelscher Engineering issued four separate bidding packages for early grading, building and trades, roadway widening, and traffic signal plan. The cost-effective design afforded the owner the ability to proceed with its signature auditorium alternate.

St. Clair County Animal Services Facility Flooding Evaluation

April, 2009 - The flood evaluation study for the St. Clair County Animal Services Facility (ASF) included the analysis of the current watershed characteristics of an unnamed tributary of Richland Creek upstream of the (ASF) to establish the anticipated flood recurrence interval for the ASF. Hydrologic analyses for the over 3 square mile drainage area were completed using the HEC-HMS program for the 2, 5, 10, 25, 50 and 100-year storms. Conceptual designs for providing detention at various locations, including the modification of existing dams, in the upstream watershed were evaluated to determine potential solutions to the existing flooding problems at the ASF. Results from the HEC-HMS analyses were used to prepare water surface profile models for the impacted reach of Richland Creek using HEC-RAS. The HEC-RAS models included the evaluation of the impacts from 3 existing culverts. A depth of flooding-recurrence interval curve was prepared to assist in the development of scenarios to resolve the flooding problems.

Hoelscher Engineering Opens Champaign Office - Champaign, Illinois

June, 2008 - We are happy to announce the opening of our new office in Champaign, Illinois. The goal of the office is to focus on servicing clients with structural projects. Max Watkins, P.E., S.E. is the key employee who will be providing these services to our clients. With over 18 years of experience, Max will be focusing on bridge design, structural design for heavy construction contractors, and some building projects.

FAU 66 (Peoria Road - BUS I-55) - Springfield, Illinois

June, 2008 - Phase I services for the relocation of Peoria Road at Ridgely Avenue. This 1,700 ft. urban improvement included and Intersection Design Study of the intersection of Peoria Road and Ridgely Avenue, a public hearing and preparation of a Project Design Report for approval by IDOT and FHWA. Construction will include demolition of numerous commercial and residential buildings, realignment of Peoria Road to correct a substandard mainline radius, pavement widening to a 5-lane section with a two-way left-turn lane, combination concrete curb and gutter, storm sewer, utility relocations and a major intersection improvement.

Prairie du Pont Levee and Sanitation District - Internal Levee Drainage Evaluation

April, 2008 - In conjunction with the FEMA recertification of the Prairie du Pont and Fish Lake levees along the Mississippi, comprehensive modeling of the watersheds riverward of the levee was completed using HEC-HMS. The 31.5 square mile (20,000 acre) watershed was evaluated using 25 sub-basins to determine the 100-year floodplain for all tributaries within the watershed. The results of the HEC-HMS model were used as input for an unsteady flow hydraulic model using HEC-RAS. The unsteady flow component was used to ensure accurate modeling of reverse flow in the Fish Lake tributary caused by the limitations of the Fish Lake pump station capacity and upland tributary storm impacts. Twenty-seven bridges and culverts were included in the hydraulic model to ensure impacts due to storage were properly evaluated. The discharge from new relief wells to control underseepage was incorporated into a proposed conditions model to ensure adequate capacity was available at the pump stations and gravity drains. All requisite field survey and reconnaissance was completed in conjunction with the inspection of the hydraulic structures.

Traffic Studies - Washington Park and Lincoln Park - Springfield, Illinois

September, 2007 - Extensive traffic studies were performed in two of Springfield's oldest and heaviest used parks. Conflicts between vehicles, bicycles and pedestrians were quantified and significant changes to the traffic operations within the park's roadway systems were recommended. Several public hearings were held and public comments were incorporated into the final recommendations to help improve safety to all users within the parks.