H.A.P.P.I.E. program (Hazard of Aquifer Pollution Potential Impact
Evaluation) provides a conservative answer to the problem of determining
risk levels in emergency conditions, which means that areas where
illegal waste disposal sites, overflows and ruptures of impermeable
sheeting are present and where water withdrawal should be discontinued
can be identified.
in fact offers a conservative response to the problem of the determination
of the environmental impact in critical conditions that can usually
be correlated to the requirements of defining areas in which the
supply operations should be interrupted in emergency conditions,
therefore in very short times and without the possibility of obtaining
an accurate collection of the hydrogeological data.
system is used, derived from H. Le Grand's method, that gives an
immediate evaluation of the risk through a limited number of easily
determined parameters (depth of water table, gradient, lithology
of the unsaturated zone, permeability, distance), on the basis of
which the various levels of concentric risk zones around the danger
point are determined.
program is simple to use and requires three data insertion stages:
the first relative to the positioning of the waste disposal sites
on the available maps, the second relative to the definition of
the geometric and geohydrological characteristics of the site and
the third relative to the positioning of the wells around the waste
next step is that of elaboration of the graphic outputs in which
the geometry of the areas at risk are determined and which the program
then superimposes onto the position of the wells so as to be able
to immediately verify which of these are subject to potentially
contaminating risk conditions.