From 1989 to 1994, Dolph Rotfeld Engineering (DRE) , P.C. was Project Coordinator for the Westchester County and monitored the activities of eight engineering consultants, conducting Sewer System Evaluation Surveys of all local public sewer systems in the thirteen Westchester County Sewer Districts. From its findings and analysis DRE was able to recommend a solution that drastically reduced the usual method and cost of the rehabilitation of the deficient local sewers.
Dolph Rotfeld Engineering, P.C., has or is currently providing consulting services to several municipal clients, including the City of New Rochelle, the Villages of Ardsley, Elmsford, Pelham, Rye Brook; the Towns of New Castle, North Castle, Harrison, Greenburgh, Eastchester; Westchester Joint Water Works and Westchester County.
The firm also currently serves as Village Engineer for Mount Kisco, Port Chester, Pelham Manor, Sleepy Hollow and as Town Engineer for the Town of Mamaroneck.
As part of an ongoing I & I study, the firm has recently coordinated flow monitoring at fifteen locations throughout the Village of Mount Kisco. Data from these monitors as well as rain gauge information, was collected and analyzed to calculate infiltration and inflow estimates.
Generally the scope of work covered for these municipalities includes review of plans submitted to Planning Boards by developers; preparation of studies and plans for rehabilitation of sanitary sewer and drainage systems, water storage, pumping, transmission and distribution systems, roads and sidewalks.
Over the past four years our firm spent much time working with the New York Racing Association (NYRA) on issues requiring compliance with the Federal and New York State environmental regulation affecting racetracks. Generally the scope of work involves handling of straw and manure, stormwater drainage and sanitary sewer reconstruction.
Since 2005 the firm has been working on water supply, storage and distribution system improvements for the Village of Sleepy Hollow. This consisted of increasing the capacity and versatility of the pumping station to supply water into the Village System and as needed to the Village of Briarcliff Manor, siting a 1.6 million gallon storage tank, creating a two zone distribution system. On behalf of Sleepy Hollow, Briarcliff Manor, and Tarrytown, we have prepared a preliminary study for connecting to the NYCDEP ultra-violet treatment plant as a source of water supply in addition to the Catskill Aqueduct for these communities.
The firm prepared studies, plans and construction documents for a major water transmission line and distribution system improvements for the Amawalk-Shenorock Water District in the Town of Somers. The work consisted of three separate contracts which provided for the installation of 21,800 LF of 16” transmission main and 7,500 feet of 8” and 10” pipeline extension to the existing distribution system.
The firm has extensive stormwater management experience and the ability to produce comprehensive computer modeling to analyze drainage problems and design effective solutions.
Recent studies focused on preparation of designs that will comply with USEPA and NYSDEC Stormwater Phase II requirements and minimizing peak rate of run-off and soil erosion from projects. Typical current stormwater management and flood control project designs were completed for Brentwood Brook in the Town of Harrison; neighborhood areas in Elmsford, Pelham Manor, and for large scale real estate developments in the City of Yonkers. The firm conducted a detailed drainage study for the East Branch of Blind Brook in the Village of Rye Brook. The study was done to determine the extent of remedial measures needed to reduce flooding in the watershed. Construction for the first phase of capital projects are being completed.
Dolph Rotfeld Engineering, P.C., has extensive permitting experience with Federal, State and local agencies. The firm maintains a respected reputation with such agencies as the New York State Department of Environmental Conservation, New York State OGS, New York City Department of Environmental Protection and Westchester County Departments of Health, Public Works and Environmental Facilities.
The firm and its professionals take pride in their ability to tackle engineering and construction problems, prepare cost effective solutions, and help clients deal with the many layers of approval and permitting processes that are an integral part of today's engineering practices.