PROJ00509

• Contract/PO #: C153500
• Contractor Name: San Miguel Water Conservancy District
• Contract Type: Loan
• Water District: 0
• County: San Miguel
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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TABLE OF CONTENTS
UPDATE - JANUARY 1996

SECTION

PAGE

1. EXECUTIVE SUMMARY * not included in first draft . . . . . . . . . . . . . . . . . . . . . 1

2, INTRODUCTION . . , , , . , . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1 Scope and Purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Population Served and Population Projection , . . . . . . . . . . . . . . . . . . . 3

3. WATER SUPPLY. . . . . . . . . . . . . . , . . . , . , . . . . . . , . . . . . . . . . . . . . . . . . .4
3.1 Raw Water Supply and Water Rights . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Diversion Structure and Intake: Assessment of Feasibility ........... 9
Description of the Project and Statement of Need . . . . . . , . . . . . . . . . . . . 9

Alternatives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Impacts and Permitting .................................. 11
Conceptual Cost of the Proposed Project. . . . . . . . . . . . . . . . . . . . . . . 11
Financial Impacts and Considerations ......................... 12
Financial Planning and Funding of Improvements ................. 12
3.3 Raw Water Pipeline. . . . . . . . . . . . . , , , , . , , . , , . . . . . . . , , . . . . 12

4. WATER TREATMENT,............................,.......... 14
4.1 Water Treatment Facility . . . . . . , , . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Water Production .........................".......... 14
4.3 Major Unit Process Evaluation ",......................... 15
Influent Measurement and Chemical Addition . . . . . . . . . . . . . . . . . . . . 15
Flocculation and Sedimentation ............................. 15

Filtration ................,.......................... 18
Disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
High Service Pumps to Storage/Distribution . . . . . . . . . . . . . . . . . . . . . 22
Solids Handling ....................................... 22
Plant Operations and Staffing .............................. 23
4.4 Performance Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Turbidity Removal .......".,.......................... 24
Disinfection . . . . . . . . . . . . . , , . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.5 Performance Limiting Factors and CCP . . . . . . . . . . . . . . . . . . . . . . 25
4.6 Recommended Treatment Improvements . . . . . . . . . . . . . . . . . . . . . . 28

5. WATER TRANSMISSION, DISTRIBUTION AND STORAGE ......,...... 29
5.1 Review of the Existing System, . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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