In the early 1990s, industrial hazardous waste management in Egypt was identified as a priority by national environmental action and the environmental promulgation law. However, there was no clear strategy set forth by either documents on how to proceed towards the realization of this national goal. This task was achieved by compiling a baseline study report during 1992-93. The report provided a list of short and long-term actions that were required to establish this waste management system in line with both of these official documents. As well, it presented a list of practical steps to be taken in order to proceed promptly with the validation of these actions. This paper reviews the experience of developing the relevant guidelines for this system from 1992 until 1996. In addition, it provides an update on the current achievements and developments in the field as well as the outstanding obstacles.

Tadla basin, located in the centre of Morocco, is one of the most important hydraulic basins in the country. The sustainable management of the aquifer needs an assessment. In this paper, radiometric and stable isotopes tracers are used to determine recharge zones, mean residence time, movement, and velocity of groundwater. 19 samples were collected from the Turonien aquifer of Tadla basin, and isotopic measurements on groundwaters were carried out. Stable isotope composition, tritium and carbone-14 data show:

(1) Recent recharge "less than 60 years" in north and northeast of Tadla basin;

(2) Older ground water "more than 1000 year" was present in central part of the basin implies that this zone does probably not receive any modern water;

(3) The movement of water is from N to S and NNE to SSW;

(4) A strong isotopic contrast between the recharge area and the confined aquifer, suggesting hydraulic continuity between these two portions; and

(5) Groundwater velocity in confined aquifer is 3,2 m/y and in recharge, area is 6,6 m/y.