Covering letter . Could you check it?

Hello,
I have a little problem. My wife asked me about helping with her covering letter in English. I don't have too much experience in formal documents. I have never needed it...  Could you look at it and find mistakes or were is a wrong construction of words?
 I really need it :)

"Sir, I am writing in response to offer the job at the ......... I hereby submit my candidacy for the position of "the name of position" to "name of a company"

I am a graduate of environmental protection. I studied at the University of Warmia and Mazury in Olsztyn. My education had been divided into two separate levels: an engineering degree and master of science in the speciality of natural resources protection. The knowledge which I gained during my first degree allows me to competently respond to professional challenges and deal with the tasks entrusted to me. I obtained education related to water resources management, water and wastewater treatment technology, a valorisation of ecosystems, environmental monitoring, hydrology and limnology. The second level of studies has expanded my knowledge of natural resources and ecology protection, strategic environmental impact assessments, basics of river revitalization, pollution and groundwater protection, technical elements used in environmental protection, environmental policy and modelling in environmental sciences. I had a great opportunity to prove my skills during a three-month internship in enterprises and an administrative unit during regular studies.

 I worked at the Municipal Office in Suwałki in the Department of Investment and Economics after my second degree of study, where I got acquainted with the applicable regulations regarding environmental protection, ability to write formal documents and administrative decisions. After completing the internship, I got a job offer in the same unit that I accepted. This work allowed me to gain new experience and practical skills in the conduct of administrative proceedings, censuses of cases and data archiving, compliance with the protocols of conduct, development of environmental decisions regarding planned investments. Internships and full-time work have improved my interpersonal skills, including communication, negotiation and conflict resolution.

 

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