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<DIV STYLE="text-align:Left;"><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>Twenty locations were identified along the entire length of LBC, two of its tributaries (Cabin Branch and</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>Cattail Branch), and reference points in the NEB and NWB for surface water and sediment sampling, in</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>consultation with MDE’s Water and Science Administration as well as Prince George’s County</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>Department of the Environment. Samples were collected according to the work plan for this effort.</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>Sample locations, rationale, and identification are provided in Table 1. Sample locations are shown on</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>Figure 1. All sampling was conducted on November 20, 2019, by two separate field teams. In the 30 days</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>prior to sampling, there was significant rainfall (5.72 inches at the rain gage near Beltsville, MD).</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>However, most of this occurred at the end of October. Between November 2, 2019 and November 20,</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>2019, only 0.38 inches of rain was recorded at this station. A moderate rainfall occurred on November</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>19, the day before sampling, with 0.2 inches of rain recorded at nearby weather stations. However,</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>water velocity and streamflow data from the USGS gage station on LBC indicate that by the time</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>sampling occurred on November 20, LBC had returned to baseflow conditions, with discharge around 7</SPAN></SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN><SPAN>cubic feet per second (USGS Gage Station data). </SPAN></SPAN></P></DIV> |