LETTER OF AGREEMENT between Campo/Lake Morena Planning Group and Victor M. Ponce, Consultant Campo, November __, 2005. INTRODUCTION The Campo/Lake Morena Planning Group, hereafter "The Planning Group," wishes to support the development of a document that will address the issues of groundwater utilization, depletion, and sustainability. The document will be used to establish the proper scientific arguments to assess the interdisciplinary impacts of aquifer utilization. SCOPE OF WORK The consultant agrees to write a white paper on the topic "Groundwater utilization and sustainability," intended for general use. The document will explore the relationship between the exploitation of groundwater and the principle of sustainable development. Topics will cover the origin of groundwater; its quantity, quality, and age; recharge and discharge; physical properties; groundwater utilization; groundwater depletion, including case studies; impacts of groundwater depletion; and sustainable yield. The document will be written in a tutorial style, with usage of graphs, and technical terms clearly defined and explained to facilitate understanding. The target audience ranges from local stakeholders to decision-makers, including government officials and politicians. The length of the document will be 10-15 pages. TIMELINE The Consultant agrees to deliver the product subject of this agreement no later than December 31, 2005. HONORARIUM To be agreed upon by the parties. PAYMENT SCHEDULE 50% at the start, and 50% at the completion and delivery of the product. Campo/Lake Morena Planning Group Victor M. Ponce