cee5734_hw12_2011_solutions

Cee5734_hw12_2011_so - Virginia Tech Department of Civil and Environmental Engineering CEE 5734 Urban Hydrology and Stormwater Management

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

View Full Document Right Arrow Icon
1 Virginia Tech Department of Civil and Environmental Engineering CEE 5734 – Urban Hydrology and Stormwater Management Homework #12: Nutrient Loading, BMPs, and Best BMP Strategies Due: April 27, 2011 - Solutions This homework will reinforce lecture examples on nutrient loading calculations, nutrient removal through BMPs, and BMP optimization. Calculations: 1. (3 points – 1 point each for each pollutant) Use the “Simple Method/PLOAD” to determine the total Phosphorus, Nitrogen, and Lead annual loads for a 1.2 mi 2 watershed that is 60% “older urban areas” and 40% “hardwood forest”. Use the EMC data from Schueler (1987). Assume an annual rainfall of 40 inches, imperviousness of older urban areas are 85%, imperviousness of hardwood forest is zero, and Lead EMCs from hardwood forests are 0.0 mg/L. Solution: See table below: Land Use Older Urban Areas Hardwood Forest Area (mi 2 ) 0.72 0.48 Area (acres) 460.8 307.2 Imperviousness (%) 85 0 Rv 0.815 0.05 Nitrogen EMC 13.6 0.78 Phosphorus EMC 1.08 0.15 Lead EMC 0.389 0 Precipitation (inches) 40 40 Constant 0.227 0.227 Runoff Fraction (Pj) 0.9 0.9 Nitrogen Load (lbs)
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.

This note was uploaded on 12/24/2011 for the course CEE 5734 taught by Professor Moglen during the Spring '11 term at Virginia Tech.

Page1 / 3

Cee5734_hw12_2011_so - Virginia Tech Department of Civil and Environmental Engineering CEE 5734 Urban Hydrology and Stormwater Management

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