Water Resources
 
Tolman Engineering has specialized experience in water resources engineering. The staff has successfully completed an extensive number of projects, studies, permits, mitigations, and reviews involving hydrology, hydraulics, water quality, water supply and mathematical modeling. The senior member and founder of Tolman Engineering, Rex Tolman, was the Water Resources Group Supervisor and Regional Manager for a Top 500 engineering consulting firm for over a decade before starting Tolman Engineering. At that capacity he was responsible for a number of national and international projects. Brief summaries on some of the water resource experience for the staff at Tolman Engineering is provided below.

Reservoirs and Dams

Peak n’ Peak Storage Reservoir: The Peak n’ Peak Storage Reservoir was (is being) constructed to hold 14 million gallons of water for snowmaking and irrigation. The earthen dam used for the reservoir spans approximately 824 feet across a stream channel, is 36 feet at its highest point, and 130 feet at the widest point.

Hoskins Dam: A 14.8 million gallon pond constructed for recreational purposes. The earthen dam used to create the reservoir spans approximately 500 feet across a stream channel, is 20 feet at its highest point, and is 130 feet wide at the widest point.

A number of stormwater detention ponds projects have been completed, refer to the Stormwater section under Experience.

Flood Plain Analysis:

Carlson FEMA Study: An analysis was performed with the HEC-2 program to determine construction requirements and FEMA flood impacts for a bridge to be built over Snake Creek in the Town of Busti, New York.

Perkins FEMA Study: An analysis was completed using HEC-RAS to evaluate flooding impacts from a gravel mine expansion.

Mr. Rex Tolman Specialized Water Resources Experience:

Water resources coordinator for the FERC license application for the Summit, River Mountain, Dry Fork and Harrisburg hydroelectric projects. Work included design and implementation of stream gauging, water quality sampling, hydraulic design of all structures, stream diversion design, sediment and erosion control, backwater analysis using HEC-2 and hydrologic analysis using HEC-1.

Water resources specialist with USAID in Nepal to evaluate the benefits of competing private power project proposals. Evaluation of hydrology and hydraulics of projects to assess energy, flood mitigation and irrigation benefits.

Water resources engineer for the Canon del Pato Project, Peru. Project included energy analysis, hydraulic analysis of project conveyance systems for expanding capacities and seasonal hydrologic analysis of potential additional water for expansion.

Hydraulic evaluation of the Lake Victoria outlet hydraulic control into the Nile River to assess available water and optimal location and sizing of the Owens Falls Expansion Project in Uganda.

Principal programming engineer for development of the Portland COE physical asset management system. This database development included automatic generation of statistical analysis of water data including procedures specified in Bulletin 17, log Pearson Type 3 and several other regression calculations, low flow and flood frequency analysis and other statistical evaluations.

Principal investigator for technical representation, review and negotiations with the FERC on the headwaters benefits study of the Susquehanna River. This included extensive hydraulic and hydrologic analysis of the entire Susquehanna reservoir/river system.

Completion of HEC-1 model of the entire Hudson River for Niagara Mohawk Power Company to assess power impacts from proposed environmental low flow and by-pass flows as part of FERC relicensing.

Conducted dozens of modeling studies using a wide range of hydraulic, hydrologic and water quality models. Extensive experience with HEC-1, HEC-2, HEC-5, HEC-RAS, NOAA DamBreak, SMS, WQRSS, Headwaters Benefits Model and others. He has also completed extensive programming for development of database and executable programs to solve hydraulic and hydrologic specific problems.