To open or close a topic, click on it. A triangle symbol means the topic is closed, while a dash means its open. When a topic is open, it moves to the top of the left-hand navigation pane, and its subtopics are shown. Click on any subtopic to open it. To see the other topics above the one that is open, close the topic.

If you are new to geospatial analyses, you can review the fact sheets to begin to understand the use of geospatial analysis to support optimizing the investigation or cleanup activity for an environmental site. Click on the Fact Sheets tab in the left-hand navigation to open the list of four fact sheets. The Fact Sheets Overview page includes the links to download the fact sheets.

The Overview topic includes brief descriptions of the different sections in this document.

The PM’s Tool Box page includes links to key sections of the document and works as a navigation page for a project manager.

If you want assistance designing or reviewing the use of geospatial methods, click on the Review Checklist. This checklist will assist  anyone using geospatial analysis to prepare a report at any project life cycle stage. This checklist will also help reviewers determine if all of the needed information has been presented. The format for the checklist includes references to specific places in this guidance for particular information.

Click the left-hand navigation tab to review document information organized by relevance to specific audiences. For example, if you are familiar with geospatial analyses and reviewing or using geospatial methods to support your optimization activities, you may want to click the methods tab and then choose the specific method topic under that tab. Once the topic is open, click Read More to read the entire topic, or click individual items as needed.

The sections are not numbered, but the tables and figures in the document are numbered sequentially throughout the website.

The Additional Information section includes project life cycle stage descriptions, information on the history of remedial process optimization, and additional resources which includes optimization, statistics, and geospatial analyses references.

Open the section of interest. Right click on the link for the second section of interest. Select “Open link in a new window with navigation”. This approach works for any link you wish to view in a separate window.

Permission is granted to refer to or quote from this publication with the customary acknowledgment of the source. The suggested citation for this document is as follows:

Interstate Technology & Regulatory Council (ITRC). 2016. Geospatial Analysis for Optimization at Environmental Sites. GRO-1. Washington, D.C.: Interstate Technology & Regulatory Council, Geostatistics for Remediation Optimization Team. http://itrcweb.org/Team/Public?teamID=62.

In your browser, find the settings for opening pages in tabs instead of windows. In Internet Explorer, go to Tools>Internet Options>Tabs>Settings and select “Always open pop-ups in a new tab”. For Safari, there are three choices for opening pages in tabs: Automatically, Never, Always. In Firefox or Google Chrome, all links automatically open in a new tab.

You can bookmark sections of this guidance. Each section has a unique URL, so it can be shared, emailed, or saved in the browser bookmarks (as you would save a normal browser favorite or bookmark).

The fact sheets and Review Checklist are downloadable in a printable format (PDF). The software tables are in a downloadable Excel file. To print material from the website, use the Print this page link at the bottom of each page.

Glossary terms: Mouse over glossary terms to open definition. Mouse away from the popup box to close definition. Glossary terms are shown in the document as bold, orange text that is underlined with a dotted line. The entire glossary is linked at the footer and in the Additional Information.

Using popups: The references are linked as  popups in this document. When you click a reference, the popup material will appear in front of the text that you were reading, and the text will be grayed out in the background. To return to the text, click anywhere in the gray area surrounding the popup. The full References list is linked at the footer.

Internal links: the internal links to different places on the document are shown as bold, blue text that is underlined with a solid line.

Suppose you have a “read more” section open and then click a link to another section. If you then click the “back” arrow, the “read more” section that was previously open is then closed.  When you use a back arrow, the page reloads and all “read mores” are closed on the reload. It may be helpful to review the answer to “How do I view separate parts of the document in separate screens?”

To access the new GRO-1 Tech-Reg website, you can visit www.itrcweb.org/gro-1 or gro-1.itrcweb.org. Both URLs point to the same website, one is just an alias of the other.