On-Call Survey Services
Baltimore County, Maryland
Development Facilitators, Inc. (DFI) supplied the Baltimore County Department of Public Works with on-call surveying services. DFI was responsible for locating and documenting all gravity sewer lines that are ten inches in diameter or larger and all eight inch lines that are necessary to accurately represent flow attributable to a specific service area in any collection system sewer shed. The crew also had to locate and document all gravity sewer lines that convey wastewater from one pump station service area to another and all gravity sewer lines that caused or contributed to capacity related sanitary sewer overflows. This sanitary sewer collection system serves most of the citizens of Baltimore County, Maryland, who live inside the urban-rural demarcation line, some citizens of Anne Arundel and Howard counties, and the facilities located at Baltimore-Washington International (BWI) Airport that are owned by the state of Maryland.
DFI utilized Global Positioning System (GPS) and Robotic Total Stations services when performing surveys to aid in compliance with a consent decree brought forth by the Environmental Protection Agency (EPA) and the Maryland Department of the Environment (MDE) to eliminate sanitary sewer overflows in accordance with the Clean Water Act.
This work also included the preparation of maps depicting the collection system and all of its appurtenances and the location of all known sanitary sewer overflow structures, as well as all outfalls, manholes and pump stations. The maps generated for the county were updated as needed for the county to prepare and submit a Sanitary Sewer Overflow Characterization Report on an annual basis. The surveying and maps are required to include new or corrected information identified during the prior year.
Washington County, Maryland
Development Facilitators, Inc. (DFI) provided survey services to develop a base map drawing for the design of approximately 3,600 linear feet of new roadway and the redesign of approximately 800 linear feet of existing roadway on Southern Boulevard in Hagerstown, Washington County, Maryland. The survey crew performed boundary and topographic surveys for approximately 28 individually owned properties abutting Frederick Avenue, including the improvements on Frederick Avenue and multiple commercial properties adjoining East Oak Ridge Road and Villa Ridge Drive.
The DFI survey crew employed technology including global positioning system (GPS) and Robotic Total Stations and were also based on the Maryland State Plane Coordinate Systems (SPCS) NAD83 and NAVD87 during their surveys. The two systems recorded horizontal and vertical datum and were prepared in accordance with the Maryland Minimum Standards of Practice.
DFI prepared right of way and easement plats and written descriptions for the purposes of acquiring offsite public utility and grading easements, as well as right of way acquisitions that were necessary for acquisition by Washington County. All easement plats and descriptions were prepared in accordance with County Standard Details and Specifications and the Maryland Department of Transportation State Highway Administration (MDOT SHA) Standards for acceptance by the county and recordation for land records.
DFI also established a baseline of construction to agree with the centerline of right of way and perform field run cross-sections at 50- and 100-foot stations. The crew collected data such as the locations of all public and private utilities, overhead utility lines and poles, as well as storm drain structures, among other physical improvements. DFI also provided stakeout of boring locations for utility test pitting and for soil borings for stormwater management and roadway section design.
Prior to the collection of survey data, DFI advised the county’s real property administrator, as well as affected property owners via certified mail of the proposed survey work.