HW 12 - 53:050 Natural Environmental Systems Homework...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
53:050 Natural Environmental Systems Homework Assignment No. 12 – Spring 2011 Due Friday April 22 by 8:30 am 1. (a) Problem 9-39 in Davis and Masten. Since the answer is given you need to make sure you show all work used to arrive at your answer. (b) How many days does it take the chemical to travel 1 mile? 2. Problem 7-10 in Davis and Masten. 3. You are to make some calculations about the movement of groundwater and pollutants in an aquifer. The aquifer is a sandy loam with an estimated hydraulic conductivity of 3 x 10 -3 cm/s, a bulk density of 1.6 kg/L, and an organic carbon fraction of 0.001. A tracer study was conducted to assess groundwater velocity and showed that a slug of a conservative tracer took 34 days to travel the 10-m distance between two wells. (a) Calculate the groundwater velocity. (b) Calculate the Darcy velocity. (c) What is the hydraulic gradient? (d) If the groundwater is contaminated with methyl tert -buytl ether (MTBE – a gasoline additive), estimate the time in days it would take the MTBE to travel the 10 m.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

HW 12 - 53:050 Natural Environmental Systems Homework...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online