Parent Layer: MDE

Name: MDE_Surface_Water_2019

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Description: Twenty locations were identified along the entire length of LBC, two of its tributaries (Cabin Branch andCattail Branch), and reference points in the NEB and NWB for surface water and sediment sampling, inconsultation with MDE’s Water and Science Administration as well as Prince George’s CountyDepartment of the Environment. Samples were collected according to the work plan for this effort.Sample locations, rationale, and identification are provided in Table 1. Sample locations are shown onFigure 1. All sampling was conducted on November 20, 2019, by two separate field teams. In the 30 daysprior to sampling, there was significant rainfall (5.72 inches at the rain gage near Beltsville, MD).However, most of this occurred at the end of October. Between November 2, 2019 and November 20,2019, only 0.38 inches of rain was recorded at this station. A moderate rainfall occurred on November19, the day before sampling, with 0.2 inches of rain recorded at nearby weather stations. However,water velocity and streamflow data from the USGS gage station on LBC indicate that by the timesampling occurred on November 20, LBC had returned to baseflow conditions, with discharge around 7cubic feet per second (USGS Gage Station data).

Service Item Id: 4182d67f89014565bf2aa1415fbd3ba5

Copyright Text: Elizabeth Green (Retired) Benjamin J. Daniels, Ph.D., P.G. Remedial Project Manager Federal Assessment and Remediation Division Land and Materials Administration Maryland Department of the Environment 1800 Washington Boulevard, Suite 625 Baltimore, Maryland 21230 ben.daniels@maryland.gov 410-537-3346 (O)

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