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GasSim ® v2.5 is sold on the basis of a single-user licence for the software on the licence terms set out below. Installing the software on your machine indicates your acceptance of these terms.

Copyright of GasSim ® v2.5 is owned by the Environment Agency and is protected by both copyright law of the United Kingdom and international copyright treaty provisions.

GasSim2® v2.5 Software License Agreement
Single User License
You are purchasing a Single-User Licence for the GasSim2® software on the Licence terms set out below.  Installing the software on your machine indicates your acceptance of these terms.  Copyright of GasSim2® is owned by the Environment Agency and is protected by both copyright law of the United Kingdom and international copyright treaty provisions.

You are required to install this software onto a hard disk for use and you may make archival copies of the software installation set for the sole purpose of backing up the software and protecting your investment from loss.  The software may be used by any number of people, and may be moved from one computer location to another, provided that the software is first uninstalled.

One Licence applies to each installation of the software.  That Licence is protected in the form of an electronic code or “dongle” which is provided at the time of sale of the software.  If you uninstall this software, a separate uninstall electronic code is generated which is required to release your Licence for use on another installation.  The software may not be installed on a networked system or on a computer connected to a file server or other system that physically allows shared access to the software.  You must obtain sufficient copies of the Licence if you require concurrent use of the software by more than one user or if you require installation of the software at more than one physical location. 

This Licence is effective as of the time you receive the software, and shall continue in effect until you cease all use of the software and return or destroy all copies of the software, or until automatically terminated upon your failure to comply with any of the terms of this Licence.

Your Agreement

  1. You will not modify or delete the GasSim2 version number and quality control information produced by GasSim2 on all printed output nor will you change the printed output.

  2. The Environment Agency provides no warranty at all other than the Limited Warranty provided in this package to the original purchaser.

  3. You will remain solely responsible for the competent use of your copy of the software.

  4. Golder Associates (UK) Limited will offer two hours helpdesk support for every user Licence within the first year of purchase.

  5. You will indemnify and hold the Environment Agency and Golder Associates (UK) Limited harmless from and against any claims or liabilities arising out of the use of your copy of the software.

  6. You will not reverse compile or otherwise dis-assemble the software.

  7. You will not modify, distribute or re-sell any part of the software, data files, or area specific regionalised one-year meteorological datasets provided in GasSim2 and you will not use the regionalised meteorological datasets for any other purpose than internal use within and by the GasSim2 software.


The Environment Agency warrants the physical CD-Rom(s) (if provided) and physical documentation enclosed herein to be free of defects in materials and workmanship for a period of sixty days from the purchase date. If the Environment Agency receives notification within the warranty period of defects in materials or workmanship, and such notification is determined by the Environment Agency to be correct, the Environment Agency will replace the defective CD-Rom (s) or documentation.

The entire and exclusive liability and remedy for breach of this Limited Warranty shall be limited to replacement of defective CD-Rom (s) or documentation and shall not include or extend to any claim for or right to recover any other damages, including but not limited to, loss of profit, data, or use of the software, or special, incidental, or consequential damages or other similar claims, even if the Environment Agency has been specifically advised of the possibility of such damages. In no event will the Environment Agency's liability for any damages to you or any other person ever exceed the actual price paid for the Licence to use the software, regardless of any form of the claim.


Specifically, the Environment Agency does not represent or warrant that the software is fit for any particular purpose and any implied warranty of merchantability is limited to the sixty-day duration of the Limited Warranty covering the physical CD-Rom (s) and physical documentation only (and not the software) and is otherwise expressly and specifically disclaimed.

Governing Law and General Provisions

This Licence statement shall be construed, interpreted and governed by the laws of England and Wales. If any provision of this statement is found void or unenforceable, it will not affect the validity of the balance of this statement, which shall remain valid and enforceable according to its terms. If any remedy provided is determined to have failed of its essential purpose, all limitations of liability and exclusions of damages set forth in the Limited Warranty shall remain in full force and effect. All rights not specifically granted in this statement are reserved by the Environment Agency.