Browse Over 3 Million Questions

Let Our Professionals Assist You With Research and Writing. 


What type of pesticide atrazine is and how long is remains in the environment?

Atrazine is the second most widely used herbicide in the US. The EPA estimates that 80 million pounds are used annually. In 2001, over 7 million pounds of atrazine were used in Indiana, and over 12 million pounds were used in Illinois. Because atrazine has been linked to health problems, the US Environmental Protection Agency has established a drinking water standard for atrazine of 3 parts per billion, or 0.003 mg/L. Atrazine has been under review by the USEPA and a regulatory decision is anticipated in 2016.
Calculations – to be handed in during class
Consider an agricultural watershed with an area of 7000 hectares (ha). A stream drains the watershed into a lake with a surface area of 36 ha and a depth of 5 meters. The outflow of the lake is 118 liters per second. A nearby town uses the lake as a water supply. Atrazine is applied to the watershed each year at an average rate of 0.045 kg/ha. Answer the following questions:
1. In one year, how much atrazine is applied to the watershed in total?
2. If, during a normal year, 3 % of the total atrazine applied to the watershed was washed off the fields by rain storms and transported to the lake, what would be the resulting concentration of atrazine in the lake? Express your answer in parts per billion. . (HINT: first calculate the volume of the lake, then determine the atrazine concentration in the lake.).
3. Calculate the average residence time of Atrazine in the lake.
In wet years as much as 7% or more of total Atrazine applied can be lost to surface water sources. Please write a policy memo that persuades policy makers either in favor of the continued use of Atrazine or to ban Atrazine as the UK has already done. Please address the following questions in the memo and address the concerns that may be present.
• The towns concern about their drinking water supply in this scenario?
• What type of pesticide atrazine is and how long is remains in the environment?
• the effects of atrazine on human health
• the effects of atrazine on wildlife
• Impact of atrazine on groundwater
• the implications to farmers if Atrazine was banned, ie address cost benefit issues if a ban

Order a similar paper and get 15% discount on your first order with us (Coupon Code: SAVE15)

Dr. Thea Watson
98% Success Rate
Read More
“Hello, I deliver nursing papers on time following instructions from the client. My primary goal is customer satisfaction. Welcome for plagiarism free papers”
Ivan L. Myers
98% Success Rate
Read More
Hi! I am an English Language and Literature graduate; I have written many academic essays, including argumentative essays, research papers, and literary analysis.
Dr. Evelyn Dougherty
98% Success Rate
Read More
"Hi, count on me to deliver quality papers that meet your expectations. I write well researched papers in the fields of nursing and medicine".
Dr. Paul P. Klug
99% Success Rate
Read More
"A top writer with proven reliability and experience. I have a 99% success rate, overall rating of 10. Hire me for quality custom written nursing papers. Thank you"

We Offer the Custom Writing Service with 3 Key Benefits

Affordable Writing Service

We guarantee a perfect price-quality balance to all students. The more pages you order, the less you pay.

The Best Support Service

Get 24⁄7 help with proofreading and editing your draft – fixing your grammar, spelling, or formatting.

Quality Essay Help

Our team of professional writers guarantees top-quality essay writing results.

Stay In Touch!

Leave your email and get discount promo codes and the best essay samples from our writers!
Chat With Us
Chat With Us