Black River Needs Assessment Capital Needs Recommendations Black River Needs Assessment and Capital

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  • BLACK RIVER NEEDS ASSESSMENT AND CAPITAL IMPROVEMENT PLANNING

    KING COUNTY, WASHINGTON

    TASK 7 — CAPITAL NEEDS RECOMMENDATIONS TECHNICAL MEMORANDUM

    JUNE 2015

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  • BLACK RIVER NEEDS ASSESSMENT AND CAPITAL IMPROVEMENT PLANNING

    TASK 7 – CAPITAL NEEDS RECOMMENDATIONS TECHNICAL MEMORANDUM

    JUNE 2015

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  • Black River Needs Assessment and Capital Improvement Planning Task 7 – Capital Needs Recommendations

    TABLE OF CONTENTS

    7. CAPITAL NEEDS RECOMMENDATIONS........................................................................................................7-1 7.1. INTRODUCTION ......................................................................................................................................................... 7-1

    7.1.1. REPORT ORGANIZATION ..................................................................................................................................... 7-2 7.1.2. PREVIOUS TECHNICAL MEMORANDUM REFERENCES ................................................................................................ 7-2

    7.2. NEW SUPPORT BUILDING ........................................................................................................................................... 7-2 7.2.1. BENEFITS OF A NEW SUPPORT BUILDING................................................................................................................ 7-3 7.2.2. SUPPORT BUILDING DESCRIPTION ......................................................................................................................... 7-5 7.2.3. ESTIMATED COST .............................................................................................................................................. 7-6

    7.3. CAPITAL IMPROVEMENT RECOMMENDATIONS TABLE ....................................................................................................... 7-8 7.3.1. IMPROVEMENT PRIORITY .................................................................................................................................... 7-8 7.3.2. ADDITIONAL ENGINEERING COSTS ........................................................................................................................ 7-8 7.3.3. CONTINGENCY COST .......................................................................................................................................... 7-8 7.3.4. PROJECTS NOT INCLUDED IN THE CAPITAL IMPROVEMENT RECOMMENDATIONS ............................................................ 7-9

    7.4. 2-YEAR TIMEFRAME .................................................................................................................................................. 7-9 7.4.1. 2-YEAR, HIGH PRIORITY ..................................................................................................................................... 7-9 7.4.2. 2-YEAR, MEDIUM PRIORITY .............................................................................................................................. 7-10

    7.5. 5-YEAR TIMEFRAME ................................................................................................................................................ 7-11 7.5.1. 5-YEAR, HIGH PRIORITY ................................................................................................................................... 7-11 7.5.2. 5-YEAR, MEDIUM PRIORITY .............................................................................................................................. 7-13 7.5.3. 5-YEAR, LOW PRIORITY .................................................................................................................................... 7-16

    7.6. 10-YEAR TIMEFRAME .............................................................................................................................................. 7-16 7.6.1. 10-YEAR, HIGH PRIORITY ................................................................................................................................. 7-16 7.6.2. 10-YEAR, MEDIUM PRIORITY ............................................................................................................................ 7-16 7.6.3. 10-YEAR, LOW PRIORITY .................................................................................................................................. 7-17

    7.7. 20-YEAR TIMEFRAME .............................................................................................................................................. 7-18 7.7.1. 20-YEAR, MEDIUM PRIORITY ............................................................................................................................ 7-18

    TABLES

    TABLE 7-1. CAPITAL IMPROVEMENT RECOMMENDATIONS FOR THE BRPS, 2-YEAR, 5-YEAR, 10-YEAR AND 20-YEAR ........................... 7-19 TABLE 7-2. TASK 2 TM AND TASK 4 TM RECOMMENDATIONS NOT LISTED IN THE 2-YEAR, 5-YEAR, 10-YEAR, AND 20-YEAR CAPITAL IMPROVEMENT PROGRAMS .................................................................................................................................................. 7-26

    FIGURES

    FIGURE 7-1. SUPPORT BUILDING SITE PLAN ............................................................................................................................... 7-5

    King County, Washington 7-1 June 2015

  • Black River Needs Assessment and Capital Improvement Planning Task 7 – Capital Needs Recommendations

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    King County, Washington 7-2 June 2015

  • Black River Needs Assessment and Capital Improvement Planning Task 7 – Capital Needs Recommendations

    7. CAPITAL NEEDS RECOMMENDATIONS

    7.1. INTRODUCTION The memorandum combines and summarizes the findings of the previous Technical Memorandums (TMs) into a list of recommended capital improvements to the Black River Pump Station (BRPS). Recommended improvements in the Task 2 Needs Assessment TM and the Task 4 Fish Migration Facility Review TM are organized to conform to the System-Wide Improvement Framework (SWIF) Capital Improvements Program (CIP) timeframes (e.g. 2-year, 5-year, 10-year, and 20-yr). The recommended improvements in many cases have been combined into larger projects to provide improved economy of scale, including reduced County and consultant management, engineering, and administration costs.

    The recommended improvements to the BRPS discussed in the Task 2 and Task 4 TMs are primarily focused on eliminating deficiencies that lower this station’s ability to operate efficiently and reliably to accomplish the primary function the station (flood control pumping) as well as the secondary function (provide upstream and downstream fish migration over the dam). The recommended improvements in the Task 2 and Task 4 TMs generally provide the following benefits to the County:

    • Replace worn out or inefficient equipment (e.g., engines, pumps, compressors, trash rake, electrical equipment, interior and exterior lighting replacement, etc).

    • Solve operational problems by modifying the process (e.g., add strainers on the spray water and cooling water systems to remove debris from the river water and prevent clogging of the components of these systems, provide a VFD on the airlift compressor motor to regulate airflow to the airlift pumps, etc).

    • Provide environmental benefits such as lowering the risk of fuel spills occurring in this station (which spans the Black River), meeting current exhaust emission standards for diesel engines, as well as current noise standards (e.g., replace the Mitsubishi Engines with new Tier 4 Diesel Engines, provide acoustical insulation on exhaust piping, replace engine exhaust silencers, etc.)

    • Provide redundant equipment and spare parts for more reliable service (e.g., provide redundant cooling water pump for Waukesha engines, provide critical spare parts for flood control engines and pumps, etc.).

    • Replace undersized and inefficient facilities that limit the functionality of the station with modern, attractive facilities that meet King County standards and allow future growth (e.g., new Support Building).

    • Protect various components of the existing facility from further corrosion damage (e.g., forebay walkway corrosion protection, fishway and airlift rooms corrosion protection, crane support structure corrosion protection, etc).

    • Meet current regulatory criteria for fish migration facilities (e.g., new vertical slot fishway, new downstream fish counter, etc.).

    • Provide further evaluation and investigation of various issues to provide the data and coordination necessary to benefit the County’s decision-making and prioritization process (e.g., evaluate BRPS Support of Upstream Fishery Habitat, test Waukesha engines and pumps, evaluate and monitor airlift capacity, etc.).

    King County, Washington 7-1 June 2015

  • Black River Needs Assessment and Capital Improvement Planning Task 7 – Capital Needs Recommendations

    7.1.1. REPORT ORGANIZATION The section following this introduction section discusses a new recommendation that has been developed to address a number of concerns associated with the planned upgrade of the BRPS in future years. Recommendation S-30, New Support Building, was not discussed in previous TMs. The new Support Building would replace the existing Control Building, and would provide significant benefits to the Count