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Preliminary Design Report Addendum No.2 <br />4.2.1 Introduction .............................................................................. ............................... <br />16 <br />4.2.2 Route Study Area ..................................................................... ............................... <br />16 <br />4.2.3 Aerial Photographs ................................................................... ............................... <br />16 <br />4.2.4 Existing Utility Data ................................................................ ............................... <br />16 <br />4.2.5 Rights -of -Way and Easements ................................................. ............................... <br />17 <br />4.2.6 Regulatory Requirements ......................................................... ............................... <br />17 <br />4.2.7 Pipeline Design Criteria ........................................................... ............................... <br />17 <br />4.2.8 Pipe Installation Methods ........................................................ ............................... <br />17 <br />4.3 Alternative Pipeline Routes ............................................................. ............................... <br />19 <br />4.3.1 General ....................................................................................... .............................19 <br />4.3.2 Description of Alternative Routes ........................................... ............................... <br />19 <br />4.4 Evaluation and Comparison of Alternative Pipeline Routes ........... ............................... <br />25 <br />4.4.1 Cost Estimate Software ............................................................ ............................... <br />25 <br />4.4.2 Pipeline Construction Cost ...................................................... ............................... <br />25 <br />4.4.3 Pump Energy Cost ................................................................... ............................... <br />26 <br />4.4.4 Non - Cost - Identifiable Evaluation ............................................ ............................... <br />26 <br />4.5 Route Recommendation .................................................................. ............................... <br />28 <br />4.5.1 Preferred Alternative Routes .................................................... ............................... <br />28 <br />4.5.2 Estimated Route Cost ............................................................... ............................... <br />28 <br />4.5.3 Recommended Route ............................................................... ............................... <br />28 <br />5.0 COST EVALUATION ............................................................................ .............................29 <br />5.1 Capital Costs ................................................................................... ............................... <br />29 <br />5.2 Operations and Maintenance Costs ................................................. ............................... <br />31 <br />List of Tables <br />Table 2- 1 Dry- weather Flows and Diversion Alternatives Summary ............................ ..............................4 <br />Table 3- 1 Comparative Summary of Diversion Structure Costs <br />7 <br />Table 3- 2 Sedimentation and Discharge Storage Chamber Design <br />10 <br />Table 3- 3 Design Discharge for the Santa Ana Delhi Channel (cfs) <br />11 <br />Table 3- 4 Design discharge for incremental return periods for the Santa Ana Delhi Channel <br />12 <br />Table 4- 1 Preliminary Construction Cost of Force Main Installation ........................... .............................25 <br />Table 4- 2 Preliminary Estimate of Power Consumption ............................................ ............................... <br />26 <br />Table 4- 3 Non - Cost - Identifiable Route Evaluation Criteria ......................................... .............................27 <br />Table 4- 4 Route Evaluation Weighted Overall Scores ................................................. .............................27 <br />UM ii <br />25F -131 <br />