User Documentation
GRITS/STAT v5.0
A GRound Water Information Tracking System with
STATistical Analysis Capability
U.S. Environmental Protection Agency
Region 7
Kansas City, Kansas
Region 5
Chicago, Illinois
Office of Research and Development
Office of Science, Planning and Regulatory
Evaluation Center for Environmental Research Information
Cincinnati, Ohio
Office of Solid Waste
Permits and State Programs Division
Washington, DC
April 1997

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Notice
(Revision 2; April 1997)
This computer software and user documentation is not intended to be a stand alone guidance
document for a specific regulatory program. Guidance documents are available from EPA. EPA
must be consulted to address specific regulatory issues. With proper use, this can software
provide the statistical tools needed to meet the regulatory requirements and an electronic data
base to store ground-water monitoring data. Mention of trade names or commercial products
does not constitute endorsement or recommendation for use.
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*** DISCLAIMER ***
This software program was designed under contract with U.S. EPA based upon the following
documents:
Definitions for the Minimum Set of Data Elements for Ground Water Quality, U.S. EPA
Office of Water, July, 1992;
Statistical Analysis of Ground Water Monitoring Data at RCRA Facilities, Interim Final
Guidance, U.S. EPA Office of Solid Waste, April 1989; and
Statistical Analysis of Ground Water Monitoring Data at RCRA Facilities, Addendum to
Interim Final Guidance, U.S. EPA Office of Solid Waste, July 1992.
Available as "Statistical Training Course Materials"
EPA/530-R-93-033) from the RCRA DOCKET (703) 603-9230.
A user support line has been set up to assist you with any problems that may arise when
operating this software. The telephone number is (703) 448-6415. This support line will
remain in operation until July 20, 1997.
DO NOT TRY TO USE THIS SOFTWARE WITHOUT FIRST REVIEWING THE TWO
GUIDANCE DOCUMENTS ON GROUND-WATER STATISTICS REFERENCED
ABOVE.
This software and guidance is available free to the public to assist with understanding and
applying the concepts in these documents. Neither the U.S. EPA, nor its contractors, nor any
person acting on behalf of either of these entities:
a.	makes any warranty, express or implied, with respect to this software; nor
b.	assumes any liabilities with respect to the use or misuse of this software, or the
interpretation or misinterpretation of any results obtained from this software, or
for damages resulting from the use of this software.
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ACKNOWLEDGMENTS
This user documentation and computer system were developed using a number of contract
vehicles and many individuals. Contract administration was provided by the Office of Science,
Planning and Regulatory Evaluation, Center for Environmental Research Information,
Cincinnati, Ohio, and Regions 7 and 5.
Technical Direction/Coordination
Jack Teuschler - U.S. EPA-CERI, Cincinnati, Ohio
Mary Bitney - U.S. EPA-Region 7, Kansas City, Kansas
TamaraLamm - U.S. EPA-Region 5, Chicago, Illinois
Tom Manning - U.S.EPA-Region 5, Chicago, Illinois
Tom Matheson - U.S. EPA-Region 5, Chicago, Illinois
Paul Zanter - U.S. EPA-Region 5, Chicago,Illinois
Jim Brown - U.S. EPA-Office of Solid Waste, Washington, DC
System Developers
Miriam Foshay, Scott Miller, Dan Plonski, Terri Young, Dave Zimmerman - TRC
Environmental Corp., Chapel Hill, North Carolina, Doug Kimzey - PC Engineering, Knoxville,
Tennessee
Reviewers
Henry Horsey - Intelligent Decisions Corporation, Denver, Colorado
Kirk Cameron - MacStat Consulting, Ltd., Colorado Springs, Colorado
Jerry Flora - Midwest Research Institute, Kansas City, Missouri
Karin Bauer - Midwest Research Institute, Kansas City, Missouri
Various technical and program personnel from Regions 2, 4, 5 and 7.
Peer Reviewers
David S. Burden, Research Hydrogeologist, USEPA Robert S. Kerr Environmental Research
Laboratory, Ada, OK
Dr. Wayland Eheart, Civil Engineer, University of Illinois, Department of Civil Engineering,
Urbana, Illinois
Roger L. Patrick, Hydrogeologist, Georgia Environmental Protection Division, Atlanta,
Georgia
Golam Mustafa, Environmental Engineer, Virginia Department of Environmental Quality,
Richmond, Virginia
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TECHNICAL SUPPORT
EPA is committed to helping users get the most out of the GRITS/STAT software. To assist in
this effort, please complete and return the User Registration Form on page vii prior to contacting
technical support.
Technical support for GRITS/STAT is provided through the following services:
EPA Office of Research and Development (ORD) Bulletin Board System (BBS) - can be
reached at (513) 569-7610. EPA uses the BBS to upload system updates and list changes to
both the software and the users manual. You may download these changes free of charge. You
may also leave messages concerning questions, comments, or problems on the BBS.
EPA GRITS/STAT User Support Hotline - can be reached at (703) 448-6415. Your call will be
answered by a voice-mail system.
Please leave your name, organization, telephone number, the time of your call, the best time to
contact you, and a brief description of the problem. Support personnel will respond to your call
during normal business hours (8:30 a.m. to 5:30 p.m. Central Time Monday through Friday).
Before calling the GRITS/STAT User Support Hotline, please follow the steps in the Pre-Call
Checklist on the next page. If you collect the requested hardware/software information and
follow the Pre-Call Checklist, our Software Technicians will be able to help you more quickly and
efficiently.
Pre-Call Checklist
1.	Be sure that you have collected the hardware/software information listed below.
2.	Check to see if your computer meets the minimum hardware requirements which are
necessary to use this software . Is 570K memory available? Use the DOS command
CHKDSK to determine available memory. Are there at least 40 files designated in the
CONFIG.SYS file on your system?
3.	Check the User Documentation, including this addendum. If your question is not
addressed in the documentation, contact the ORD-BBS or the User Support Hotline.
Also, before calling the GRITS/STAT User Support Hotline, please consider the following items:
4.	If possible, before you call, you should be sitting at your computer, with the computer on
and the software loaded.
5.	Did the program work correctly at any time previously? If so, have you changed anything
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in the computer environment?
6. Can you reproduce the sequence of steps or the application that demonstrates the
problem? Did any error messages appear? If so, exactly what were they?
Software/Hardware Information
Software version number (i.e., GRITS/STAT 5.0):

Processor Type (i.e., 486, Pentium):

Available conventional memory:

Avaialable EMS/XMS:

Operating system name, version (i.e., MS DOS, MS Windows,
OS/2):

Is software being used on a Local Area Network (LAN)?:

TSRs Loaded (i.e., Disk Compression software, Network Drivers,
MS DOS Screen Savers, etc.):

Video adapter board (i.e., VGA, SVGA):

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FOREWORD
The Nationwide GRoundwater Information Tracking System/STATistical Analysis System
(GRITS/STAT) is a comprehensive groundwater database system designed to store, analyze, and
report data generated during groundwater monitoring programs at RCRA, CERCLA, and other
regulated facilities and sites.
The current version of GRITS/STAT (5.0) is an integration/upgrade of an existing electronic data
base (GRITS 4.2) and the prescribed groundwater statistical procedures. The necessary
statistical procedures and the data selection capability are available in the statistical analysis
module of the GRITS/STAT system. It is the users responsibility to properly select and
statistically analyze the data. Proper data selection and statistical procedures should be obtained
from consultation with appropriate EPA staff, reference to the appropriate permit, or reference to
the appropriate guidance documents. Proper statistical guidance is provided in the following
documents:
Statistical Analysis of Ground-Water Monitoring Data At RCRA Facilities - Interim
Final Guidance Document, 4/89 (NTIS #PB 89-151-047. EPA/530-SW-89-026)
July, 1992 Addendum to the above Guidance Document -Distributed as "Statistical
Training Course Materials" available from the RCRA Docket, (EPA/530-R-93-003),
Telephone (703) 603-9230.
ALSO NOTE THAT THESE GUIDANCE DOCUMENTS IN ADDITION TO THE USER
MANUAL CAN BE DOWNLOADED FROM THE INTERNET SITE:
http://www.pcengineering.com/~grits
As did its predecessor GRITS/STAT 4.2, GRITS/STAT 5.0 provides a flexible user friendly
interface for data entry and modification, integrated access to "Industry Standard" IMSL
statistical analysis routines, predefined report formats, and data import and export utilities. In
addition, GRITS/STAT 5.0 includes many new features that will increase its usefulness as a
groundwater data management tool. Most notably, the program has been modified to take
advantage of extended memory. While GRITS/STAT 5.0 now requires a minimum of 2
Megabytes of installed Random Access Memory (RAM), many of the memory limitations
inherent in earlier versions of the system have been removed.
The information stored in the GRITS/STAT system can potentially be transferred to other
database/tracking/analysis systems. The modular design of the system lends itself to integration
with present and future needs. Prototype modules are implemented in GRITS/STAT 5.0, that
export geologic information to the SURFER version 4 modeling package. Requirements are
being developed for modules to export mapping information to the ARC-INFO geographic
information system (GIS). Soil monitoring data storage is also being investigated as a potential
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enhancement to the GRITS/STAT database system. The development of GRITS/STAT has
been a collaborative effort between the U.S. EPA Office of Solid Waste/Permits and State
Programs Division, Region 5, Region 7, and the U.S. EPA Office of Research and
Development/Center for Environmental Research Information (CERI). The current version of
GRITS/STAT reflects numerous years of user groundwater database experience in the regulatory
and regulated communities.
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