Dear Charles,

Take a read at the following sources for more ideas:

http://www.sciencedirect.com/science/article/pii/S0006320708002693

http://www.tandfonline.com/doi/abs/10.1080/09640569811399#.VZrg-flVhBc

http://onlinelibrary.wiley.com/doi/10.1002/ep.10048/abstract

https://books.google.com.br/books?hl=en&lr=&id=NefZAAAAQBAJ&oi=fnd&pg=PP1&dq=%22environmental+impact+assessment%22+%22environmental+management%22+sustainability+validity+performance&ots=doBLPvfJ42&sig=e3S57NYSwAd5fyh01cC_oC0USyg&redir_esc=y#v=onepage&q&f=false

http://link.springer.com/article/10.1007/s10661-011-2088-5#page-1

http://www.sciencedirect.com/science/article/pii/S0195925512000340

http://www.tandfonline.com/doi/abs/10.1080/03736245.2014.924872#.VZrgvPlVhBc

Good luck,

Simon Cleveland

Dear Charles,

Take a read at the following sources for more ideas:

http://www.sciencedirect.com/science/article/pii/S0006320708002693

http://www.tandfonline.com/doi/abs/10.1080/09640569811399#.VZrg-flVhBc

http://onlinelibrary.wiley.com/doi/10.1002/ep.10048/abstract

https://books.google.com.br/books?hl=en&lr=&id=NefZAAAAQBAJ&oi=fnd&pg=PP1&dq=%22environmental+impact+assessment%22+%22environmental+management%22+sustainability+validity+performance&ots=doBLPvfJ42&sig=e3S57NYSwAd5fyh01cC_oC0USyg&redir_esc=y#v=onepage&q&f=false

http://link.springer.com/article/10.1007/s10661-011-2088-5#page-1

http://www.sciencedirect.com/science/article/pii/S0195925512000340

http://www.tandfonline.com/doi/abs/10.1080/03736245.2014.924872#.VZrgvPlVhBc

Good luck,

Simon Cleveland

Dear Charles,

There are many guidelines as per International as well as national environmental protection laws and various  water &air acts  etc. 

For eg. EIA guideline for Indian Industrial and Infrastructure projects is available in the following website , by using or referring this guideline you can evaluate the proposed projects.

http://envfor.nic.in/guidelines.

I thank Mr Simon's valuable information.

In the UK, the Indicative screening thresholds; Paragraph: 057 Reference ID: 4-057-20140306 when considering the thresholds, it is important to consider the location of the proposed development.

In general, the more environmentally sensitive the location, the lower the threshold will be at which significant effects are likely.

See: http://planningguidance.planningportal.gov.uk/blog/guidance/environmental-impact-assessment/considering-and-determining-planning-applications-that-have-been-subject-to-an-environmental-impact-assessment/annex/

Dear Charles

The validity will depend mainly on taking rigorous steps, as scoping, screening, description of direct and indirect areas of influence, impacts' identification, classification, ponderation, assessment, and monitoring.

Also will depend on the ability, personal staff, and resources to identify relevant and applicable legislation, and follow it in each step of the study.

Validity regards to the finding of proper answers to posed questions when you identify and measure impacts.

Reliability will depend pretty much on the monitoring plan you need to develop and follow, establishing parameters and terms for each category and variable to be monitored.

I think you will find valuable suuport in the Impact Assessment and Project Appraisal Journal, and in Environmental Impact Assessment Review, as well.

Good luck.

Dear Charles

The validity will depend mainly on taking rigorous steps, as scoping, screening, description of direct and indirect areas of influence, impacts' identification, classification, ponderation, assessment, and monitoring.

Also will depend on the ability, personal staff, and resources to identify relevant and applicable legislation, and follow it in each step of the study.

Validity regards to the finding of proper answers to posed questions when you identify and measure impacts.

Reliability will depend pretty much on the monitoring plan you need to develop and follow, establishing parameters and terms for each category and variable to be monitored.

I think you will find valuable suuport in the Impact Assessment and Project Appraisal Journal, and in Environmental Impact Assessment Review, as well.

Good luck.

Dear Charles,

Even though this evaluation was done already some years ago, it mainly deals with Austria, and the study is written in German, at least the references might be helpful for your study. You can find the report here:

http://www.umweltbundesamt.at/aktuell/publikationen/publikationssuche/publikationsdetail/?pub_id=1593

Best regards,

Christian

http://www.umweltbundesamt.at/aktuell/publikationen/publikationssuche/publikationsdetail/?pub_id=1593

This is a complex operational process. Look at such references:

http://eia.unu.edu/       From the UN

http://www.environmental-mainstreaming.org/documents/EM%20Profile%20No%201%20-%20EIA%20(6%20Oct%2009).pdf         From the UK

http://www.itsmsolutions.com/newsletters/DITYvol3iss3.htm

This is just a very few among tremendous many.

Good luck.

Dear Charles

Please see the fallowing book for answer your question. 

Quantifying Environmental Impact Assessments Using Fuzzy Logic

Authors: Shepard, Richard B.

http://www.springer.com/us/book/9780387243986

Please Researchers, is there any link with Environmental Impact Assessment and Environmental Management System? Kindly assist I will so appreciate that