File: README.TXT PRZM2 Pesticide Root Zone Model - Release 2 Version 2.3 May 1996 Center for Exposure Assessment Modeling (CEAM) National Exposure Research Lab - Ecosystems Research Division Office of Research and Development (ORD) U.S. Environmental Protection Agency (U.S. EPA) 960 College Station Road Athens, Georgia 30605-2700 706/355-8400 _________________________________________________________________ CONTENTS Introduction Documentation Installation Routine Execution Technical Help Contact Disclaimer _________________________________________________________________ INTRODUCTION PRZM2 links two subordinate models, PRZM and the Vadose Zone Flow and Transport Model (VADOFT) to provide a deterministic simulation of fate of agricultural pesticides in the crop root zone and the underlying unsaturated zone. It is capable of simulating multiple pesticides or pesticide parent and daughter product relationships, and estimating probabilities of concentrations or fluxes in or from various media for the purpose of performing exposure assessments. The PRZM and VADOFT codes are linked together in PRZM2 through a flexible execution supervisor that allows the user to build loading modules tailored to site-specific situations. In order to perform probability-based assessments, the code is equipped with a Monte Carlo pre-and post-processor. NOTE: For convenience, the terms "PRZM2 model system" or "PRZM2" will be used in this document to refer to the PRZM2 model and all associated support files and programs as a single unit. Therefore, the term "PRZM2" is synonymous with "PRZM2 model system" for purposes of this document. _________________________________________________________________ DOCUMENTATION It is recommended that the user obtain and reference the documents listed below to operate and apply the PRZM2 model system. Copies of the following documents are included in the distribution file Install_PRZM23.EXE. Document Name(s) File Name(s) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~ PRZM2 model system general execution and README.TXT user support guide PRZM2 Model System Abstract ABSTRACT.TXT MODIFICATIONS TO PRZM-2 FOR IMPROVED PRZM23.PDF PESTICIDE RUNOFF PREDICTIONS These documents should be retained by the requester for future reference. NOTE: The files README.TXT and ABSTRACT.TXT are ASCII text (non-binary) files that can be displayed on the monitor screen by using the DOS TYPE command (e.g., TYPE README.TXT) or printed using the DOS PRINT command (e.g., PRINT README.TXT). File names with a file name extension of ".PDF" are Adobe Acrobat files that can only be viewed with Adobe Acrobat Reader available from Adobe at http://www.adobe.com/. _________________________________________________________________ INSTALLATION The PRZM-2 installation file, Install_PRZM23.EXE, may be acquired either from the Internet or CD-ROM. Save the installation file to a local disk before running the installation program. To install PRZM-2: Close all applications and click on the installation program "Install_PRZM23.EXE". Follow the instructions presented by the installation program. This model system is designed for the IBM PC family of microcomputer or compatible systems running under version 3.30 or higher of the Microsoft or PC Disk Operating Systems. Properly configured, this model system and its support files and programs can be executed under PC DOS or MS DOS 3.30 and later versions, DOS 4.0x, DOS 5.0x, or DOS 6.x. _________________________________________________________________ ROUTINE EXECUTION NOTE: The symbol "" represents pressing the or carriage return key. Responses and key strokes that can be typed by the user are underlined with the hyphen character (-) and/or enclosed by the angle bracket characters (<>). NOTE: It is possible that the PRZM2 model system could be incompatible with MS DOS and Windows software cache files SMARTDRV.SYS or SMARTDRV.EXE loaded from the system configuration files \CONFIG.SYS and/or \AUTOEXEC.BAT on the boot drive. If any portion of the PRZM2 model system prematurely halts, produces unusual results, and/or causes the host system to halt or hang, remove any SMARTDRV statements on the boot drive \CONFIG.SYS and/or \AUTOEXEC.BAT files, then re-boot the system to implement these changes before attempting to reuse any portion the PRZM2 model system. Introduction ~~~~~~~~~~~~ Complete the installation process to make the full or any portion of the PRZM2 model system and related files resident on a hard (usually designated as "C:") or virtual disk drive. Then modify the \CONFIG.SYS system environment file and restart the microcomputer system. This needs to be completed only once for a given installation of the PRZM2 model system. DOS Storage Path ~~~~~~~~~~~~~~~~ Verify that the PRZM2 model is in the current default DOS sub-directory. Routine Execution Steps ~~~~~~~~~~~~~~~~~~~~~~~ Step Description/Action ~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1) Set the default drive to the disk containing the PRZM2 model system sub-directory. For example: A:\> C: -- 2) Change the DOS default sub-directory to the sub-directory designated by the user during the installation program as the installation sub-directory (e.g., PRZM2). Use the DOS CD (change directory) command at the DOS system prompt: C:\> CD \PRZM2 --------- NOTE: A common problem is for a DOS executable or batch command file (*.EXE, *.BAT) to be unable to locate a file because it assumes the file is on the default drive and/or sub-directory when it is not. If input and/or other run time support file(s) are not on the default drive and sub-directory, the user can type a drive and/or path name ahead of the file name. 3) To execute the PRZM2 model, type: C:\PRZM2> PRZM2 ----- After an opening banner/registration screen is displayed on the monitor, press the key to clear the screen and continue model execution. _________________________________________________________________ TECHNICAL HELP CONTACT For questions or information concerning the distribution or installation of PRZM-2 software, documentation, or data please contact CEAM at: Phone: 706-355-8400 Fax: 706-355-8104 E-mail: ceam@epamail.epa.gov Mail: Center for Exposure Assessment Modeling (CEAM) National Exposure Research Laboratory - Ecosystems Research Division U.S. Environmental Protection Agency (U.S. EPA) 960 College Station Road Athens, Georgia 30605-2700 CEAM operates and maintains a listserver system named CEAM-USERS. The CEAM-USERS listserver is an automated mailing list system which broadcasts up-to-date information concerning CEAM software product updates and releases as well as hints on software installation and use. Subscribers may broadcast messages to other list subscribers to ask and answer questions about exposure assessment modeling topics. Instructions for subscribing, posting messages, and managing membership setting are available on the CEAM Web site at the URL: http://www.epa.gov/ceampubl/listserv.htm _________________________________________________________________ DISCLAIMER Mention of trade names or use of commercial products does not constitute endorsement or recommendation for use by the United States Environmental Protection Agency. Execution of the PRZM-2 model system, and modifications to the DOS system configuration files must be used and/or made at the user's own risk. Neither the U.S. EPA nor the program authors can assume responsibility for model and/or program modification, content, output, interpretation, or usage. The PRZM-2 program and files have been extensively tested and verified. However, as for all complex software products, the programs herein may not be completely free of errors and may not be applicable for all cases. In no event will the U.S. EPA be liable for direct, indirect, special, incidental, or consequential damages arising out of the use of the programs and/or associated documentation. ######################### Created - April 2004