It is now widely accepted that software projects utilizing the Web (e-projects) face many of the same problems and risks experienced with more traditional software projects, only to a greater degree. Further, their characteristics of rapid development cycles combined with high frequency of software releases and adaptations make many of the traditional tools and techniques for modeling defects unsuitable. This article proposes a simple model to explain and quantify the interaction between generic defect injection and removal processes in e-projects. The model is based upon long standing and highly regarded work from the field of quantitative ecological population modeling. This basic modeling approach is then subsequently tailored to fit the software production process within an e-project context.