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Earth Engineering Consultants.LLC <br /> EEC Project No. 1122096 <br /> Signal Resen�oir Improvements <br /> August 5.2015 <br /> Page 15 <br /> For any proposed intake and/or outlet pipes, or any other intrusions penetrating the cohesive liner <br /> embankments, the pipes should be properly bedded and backfilled with approved, relatively <br /> impervious cohesive soils. The intrusions/pipes should be surrounded by a minimum of 2-feet of <br /> relatively impervious cohesive materials having a coefficient of permeability of lxl0-' cm/sec. <br /> or slower when properly compacted as described herein. The backfill should be compacted to a <br /> minimum of 95% of the material's standard Proctor density as determined by ASTM D698. <br /> Anti-seep collars should be placed around all inlet and outlet pipes. <br /> Operational procedures and variations of water levels should be carefully monitored to reduce the <br /> potential for desiccation/drying of the earthen liner material and creating fractures or seepage <br /> channels within the wetted perimeter; thus allowing for possible water loss. If practical, <br /> consideration could be given to maintaining a"pre-determined" water level within the pond during <br /> the non-irrigation/water supply season. <br /> GENERAL COMMENTS <br /> The analysis and recommendations presented in this report are based upon the data obtained <br /> from the soil borings performed at the indicated locations and from any other information <br /> discussed in this report. This report does not reflect any variations, which may occur between <br /> borings or across the site. The nature and extent of such variations may not become evident until <br /> construction. If variations appear evident, it will be necessary to re-evaluate the <br /> recommendations of this report. <br /> It is recommended that the geotechnical engineer be retained to review the plans and <br /> specifications so comments can be made regarding the interpretation and implementation of our <br /> geotechnical recommendations in the design and specifications. It is further recommended that <br /> the geotechnical engineer be retained for testing and observations during earthwork and <br /> foundation construction phases to help determine that the design requirements are fulfilled. <br /> This report has been prepared for the exclusive use of Todd Creek Village Metro District and/or <br /> assignee for specific application to the project discussed and has been prepared in accordance <br /> with generally accepted geotechnical engineering practices. No warranty, express or implied, is <br /> made. In the event that any changes in the nature, design, or location of the project as outlined in <br /> this report are planned, the conclusions and recommendations contained in this report shall not <br />