Concentration found in Drinking Water:
Well Number Benzene Toluene Xylene
MW 1 13 mg/L 100 mg/L 77 mg/L
MW7 5 mg/L 110 mg L 57 mg/L
MW6 7 mg/L 85 mg/L 120 mg/L
Please calculate the directional flow of the groundwater table based on the data provided in the
handout. Show your calculations and draw your lines on the diagram provided. In addition. Tell me
which receptor, H1 or H2, or H3, or any combination, that will be exposed to the contamination.
Using the data provided above, your handouts with Intake calculations, and the information from the
EPA Region 3 RBC Table, calculate Intake values and tell me how your values compare to ARARs and the
appropriate carcinogenic and noncarcinogenic exposure values.
Good Luck! This is due on Wednesday, October 18, 2023, at class time. It is worth 40 points.