Technical View Regarding the Macadam Technical Specification at The infiltration basins at the Northern Gaza Wastewater Treatment Plant

The infiltration basins at the Northern Gaza Wastewater Treatment Plant require the use of a layer of 200mm Macadam Graded Stone to protect the slope of the embankment and parts of the bottom of the pond against erosion. The sieve analysis of the delivered macadam showed that most of the samples exceed the maximum allowable percentage of the lower limit gradation (32mm). The Macadam delivered to the site technically does not meet this requirement. The Palestinian Water Authority (PWA) requested Engineering and Management Consulting Center (EMCC) to analyze the problem and suggest corrective measures