9 Approve a Supply Capacity of 2,000 gpm for Well No. 17.

Meeting Date: JANUARY 20, 2015

Agenda Item #9. Approve a Supply Capacity of 2,000 gpm for Well No. 17.

Note from TheGardeningSnail: Parts of this page may have been prepared by running a PDF Image Document through a program which converts image to text. My apologies for any Textual Gremlins that may have slipped in. Copy of the Original can be found on the City’s Website. I may also have broken up some of the longer paragraphs for ease of reading. 

I have also added a map so you can see where the well is located.

Well 12 - 13 - 1- - 17 - 18

AGENDA ITEM: Approve a Supply Capacity of 2,000 gpm for Well No. 17.

MEETING DATE: January 20, 2015

PREPARED BY: Mario B. Gouveia, City Engineer

REVIEWED BY: Jose Antonio Ramirez, City Manager

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RECOMMENDATION:

City Council to approve a supply capacity of 2,000 gpm for Well No. 17.

BACKGROUND:

Well No. 17 was constructed in 2005 as part of the Sun Valley Estates Housing Development Project. The estimated yield of the well after development was 1,500 gallons per minute (gpm).Well No. 17 was never equipped and the City submitted an application to the Community Development Block Grant (CDBG) Program and was awarded $1,395,349 to fund improvements to complete Well No. 17.

On December 16, 2014, the City Council approved the purchase of the wellhead treatment equipment for Well No. 17. The cost of the wellhead treatment was based on a well capacity of 1,400 gpm.

Ongoing redevelopment work for Well 17 was completed in late December, 2014. The pumping tests from this ongoing work showed that Well No. 17 could support a supply capacity of 2,000 gpm.

DISCUSSION:

Based on the test results from the recent redevelopment work, staff has concluded and recommends that Well No. 17 be designed to produce 2,000 gpm. Increasing the capacity of Well No. 17 to 2,000 gpm would provide the City with a larger than originally anticipated water supply source and increase the overall supply capacity of the City’s water system for a more reliable water supply to the City.

The larger design flow results in an increase of the estimated construction costs. However the additional supply significantly outweighs the cost difference. The City would only incur a 13% cost increase to gain a 42% increase in well capacity.

The current estimate of project costs, including design and construction, for a 2,000-gpm well is

$1,995,000. The previous estimate based on a production of 1,400 gpm was $1,760,000. The items with cost increases include the treatment equipment, well pump, and electrical equipment.

FISCAL IMPACT:

The City’s budgeted amount for FY 2014-2015 for this project is $1,760,000. An additional $235,221.25 would be needed to fully fund the project. The CDBG grant amount is $1,395,349. Approval of the 2,000- gpm would require the City to allocate a total of $599,872.25 from other City sources such as Development Impact Fees, Water Enterprise Account, or TCP Settlement Funds.

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ATTACHMENTS:

None

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