The primary purpose of the model is to assist in the comparison of landfill. The hydrologic evaluation of landfill performance help model. The help model is a quasitwodimensional, deterministic, waterrouting model for determining water balances. The hydrologic evaluation of landfill performance help model was developed since 1982 by paul schroeder u.
The help versions,1, 2, and 3 were developed by the u. Epa600r94168a september 1994 the hydrologic evaluation of landfill performance help model users guide for version 3 by paul r. The help model is a suitable tool for experts in hydrology. A hydrological evaluation tool with many uses landfill closures. The user is not restricted to the same system for all data types. Download table help model input parameters from publication. The help model allows the user to use either the customary system of units a mixture of u. Help version 1 was released in 1984, version 2 in 1988 and version 3 in 1994 schroeder et al.
To check if your pc is 32 or 64bit, navigate to the start menu may be a windows icon, click computer, click system. Walkthrough to install and operate the hydrologic evaluation of landfill performance help model v3. The hydrologic evaluation of landfill performance help computer program is a quasitwodimensional hydrologic model of water movement across, into, through and out of landfills. Pdf estimation of leachate generation using help model in an. Visual help for windows the most complete modeling environment for the help model for evaluating and optimizing landfill designs. Hydrologic evaluation of landfill performance help model was developed by the us army corps of engineers to facilitate rapid, economic estimation of the amounts of surface runoff, subsurface drainage, and leachate that may be expected to result from the operation of a wide variety of possible landfill designs. This walkthrough will describe how to use a dos emulator to install the help model. Version 1 of the help model incorporated a lateral subsurface drainage model and improved unsaturated drainage and liner leakage models into the hsswds hydrologic simulation model for estimating percolation at solid waste disposal sites, this provided a simulation of the entire landfill including leachate collection and. Risk reduction engineering laboratory, cincinnati, oh, in. More than 2,000 private engineering offices in a dozen countries use the model for landfill design evaluation and. Simulation of leachate production from an arid solid waste landfill using hydrologic.
Hydrologic evaluation of landfill performance help model land. Army engineer waterways experiment station, vicksburg, mississippi and several coauthors for the u. On the current state of the hydrologic evaluation of landfill. Army engineer waterways experiment station wes, vicksbury, m. Walkthrough to install and operate the hydrologic evaluation of. Avoiding over reliance on the hydrologic evaluation of. The program models the effect of hydrologic processes including precipitation. Scientific software group is the premier provider of groundwater software, environmental software, groundwater modeling software, surface water modeling software, hydrology software, hydraulic engineering software, geotechnical software, borehole log software. The model is a tool for both designers and permit writers. The help model is a quasitwodimensional, deterministic, waterrouting model for. Aziz department of civil engineering clemson university clemson, south carolina 29634. The help program is a quasitwodimensional hydrologic model for conducting water balance analyses of landfills, cover systems, and other solid waste.
Documentation to learn more about help is available. Army corps of engineers waterways experiment station vicksburg, mississippi 391806199 and nadim m. The reasoning behind this is that unless the software is used by an expert in hydrology, who has validated the model using existing data for other landfills in similar climates, and if possible also data from the site itself. The hydrologic evaluation of landfill performance help model is a quasitwo dimensional. Hydrologic evaluation of landfill performance wikipedia. Help model, leachate, municipal solid waste, open dumpsite. Environmental protection agency epa to evaluate closure designs of hazardous and nonhazardous waste management facilities.
In this study, the hydrologic evaluation of landfill performance help model was used to examine the performance of the. The help model is a finite difference model developed by the us epa which is used to evaluate the hydrologic performance of landfills containing multiple layers and different layer combinations. The hydrologic evaluation of landfill performance help model is a quasitwodimensional. Visual help for windows complete hydrologic landfill. The applicability of hydrologic evaluation of landfill performance help model which is based on water balance method was evaluated. The hydrologic evaluation of landfill performance help model is the most widely applied model to calculate the water balance of cover and. Performance evaluation of landfills with the help hydrologic. Visual help is the international standard for modeling landfill hydrology and estimating groundwater recharge rates. The help model is a quasitwodimensional, deterministic, waterrouting model. The model accepts weather, soil and design data, and uses solution techniques that account for the effects of surface storage, snowmelt, runoff, infiltration.