9 Resolution Awarding a Contract to De Nora Water Technologies, Inc. to Change Out the Arsenic Adsorption Media at Well #16 and Authorizing the Interim City Manager to Execute the Agreement

Note from TheGardeningSnail: Part of this post may have been produced by running a PDF Image File through a program that converts Image to Print. My apologies for any textual gremlins that may have crept in. I may also have broken up some of the longer paragraphs to make reading easier.

Meeting Date: June 21, 2016

STAFF REPORT

AGENDA ITEM: Resolution Awarding a Contract to De Nora Water Technologies, Inc. to Change Out the Arsenic Adsorption Media at Well #16 and Authorize Interim City Manager to Execute the Agreement.

MEETING DATE: June 21, 2016

PREPARED BY: Alfonso Manrique, Alternate City Engineer

REVIEWED BY: Odi Ortiz, Interim City Manager

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RECOMMENDATION:

City Council to adopt Resolution No. 2016-_, awarding a contract to De Nora Water Technologies, Inc. to change out the arsenic adsorption media at Well No.16.

BACKGROUND:

The groundwater produced by Well No. 16 contains an arsenic concentration of approximately 20 ppb which is in excess of the State of California Maximum Contaminant Level (MCL) of 10 ppb. Well #16 utilizes a filtration system to reduce arsenic concentrations to below 10 ppb.

The treatment system at Well #16 utilizes an adsorptive media to remove Arsenic from the water. Adsorptive medias have limited adsorption capacity and must be changed out when exhausted.

The current adsorptive media is NXT-2 manufactured by EP Minerals. It was installed in 2013 by Filtronics, Inc. Since the treatment system began operating in May 2014 it has treated approximately 128 MG of water. EP Minerals provided a guarantee that the media would be able to treat at least 184 MG before arsenic breakthrough.

The adsorption capacity of the current media at Well #16 is near exhaustion.

Arsenic concentrations in the effluent have been rising in the recent weeks and the media will need to be changed out soon. Arsenic concentrations in the most recent tests performed by City staff were as high as 8 ppb. The City may continue operating the system as long as the arsenic concentration is below 10 ppb.

DISCUSSION:

The exhaustion of the adsorption media is happening at a fast pace and needs to be changed out. While it is uncertain how long the existing media would be able to reduce the arsenic concentration to less than 10 ppb, it appears that within the next 60 days the media would be exhausted.

The highest water demand days are usually during July and August and Well #16 is critical to sustain pressures in the system during those highest demand periods.

Well # 14 is currently out of service due to TCP concentrations in excess of 100 times the notification level. It is critical that the media change out at Well #16 is completed as quick as possible to minimize downtime.

The change out of the media can be completed in two or three days. The existing media in the vessels will be considered hazardous in California and will be removed by specialists and disposed at a hazardous materials facility. Once the existing media has been removed and the vessels cleaned the new media will be installed and disinfected.

Staff requested proposals from two media suppliers: Filtronics, Inc. and De Nora Water Technologies, Inc. The following table summarizes both proposals:

Media

Total

Filtronics, Inc.

 

NXT-2

$170,682.00

NXT-3A

$142,632.00

De Nora Water Technologies, Inc.

$116,809.00

Both proposals include removing and disposing the spent media and supplying new media. Filtronics’ proposal does not include shipping to the site.

Both proposals include a media life guarantee. De Nora’s proposal guarantees the media to treat at least 198 MG. Filtronics’ proposal guarantees to treat 184 MG using NXT-2 and 160 MG using NXT-3A. De Nora’s guarantee offers a refund to the City if the guaranteed media life is not achieved. Filtronics’ proposal offers a credit on a new load of media if the guaranteed media life is not achieved.

The following table shows the costs of treatment using each of the medias:

Media

Cost per MG

Filtronics, Inc.

 

NXT-2

$927

NXT-3A

$891

De Nora Water Technologies, Inc.

$590

After reviewing both proposals and their guaranteed performance it is recommended that the media change out be awarded to De Nora Water Technologies, Inc. The anticipated lead time of the media is 3 to 4 weeks.

The change out of the media is an emergency caused by the fast rate at which the media is being exhausted.

FISCAL IMPACT:

The City had budgeted $200,000 for the purchase of new media at Well #16 during FY 2015/16. De Nora requires payment upon completion of the media change out. It appears that payment for the media change out will be made in FY 2016/17.

ATTACHMENTS:

De Nora Water Technologies, Inc. Proposal

Filtronics Proposal

RESOLUTION NO. 2016-

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LIVINGSTON DECLARING AN EMERGENCY IN THE WATER SYSTEM CAUSED BY THE EXHAUSTION OF THE ARSENIC ADSORPTION MEDIA AT WELL NO. 16 AND AWARDING A CONTRACT TO DE NORA WATER TECHNOLOGIES, INC. TO CHANGE OUT THE ARSENIC ADSORPTION MEDIA AND AUTHORIZING THE INTERIM CITY MANAGER TO EXECUTE THE AGREEMENT

WHEREAS, the groundwater produced by Well No. 16 contains arsenic in excess of the State’s MCL of 10 µg/1; and

WHEREAS, Well No. 16 has an arsenic removal treatment system that utilizes an adsorption media; and

WHEREAS, the existing media was installed in 2013 and commissioned in May of 2014; and

WHEREAS, the adsorption capacity of the existing media is near exhaustion and it will need to be changed out before the effluent arsenic concentration reaches 10 µg/1; and

WHEREAS, maintaining Well No. 16 in service is critical, especially during the upcoming summer months and with Well No. 14 being out of service; and

WHEREAS, in accordance with Public Contract Code 22050, in the case of an emergency, a public agency, pursuant to a four-fifths vote of its governing body, may repair or replace a public facility, take any directly related and immediate action required by that emergency, and procure the necessary equipment, services, and supplies for those purposes, without giving notice for bids to let contracts; and.

WHEREAS, the fast rate at which the media is being exhausted has created an emergency in the water system and requires immediate action to procure new media; and

WHEREAS, the City has requested proposals from De Nora Water Technologies, Inc. and Filtronics, Inc. to supply and change out the existing media on an emergency basis; and

WHEREAS, the City has reviewed both proposals and recommends that the contract be awarded to De Nora Water Technologies, Inc.

FINDINGS

WHEREAS, the City Council of the City of Livingston hereby finds as follows:

A. Procurement of new media has been performed in accordance with City requirements; and

B. The situation is considered to be an emergency and there is an urgent need to procure the new media in order to maintain Well No. 16 in service.

NOW, THEREFORE, BE IT RESOLVED, by the City Council of the City of Livingston as follows: Section 1. The above recitals are true and correct findings of the Livingston City Council.

Section 2. The Interim City Manager is hereby authorized and directed to execute and agreement with De Nora Water Technologies, Inc. for $116,809.00.

Section 4. This Resolution shall take effect from and after the date of its adoption.

Section 5. Each portion of this resolution is severable. Should any portion of this resolution be adjudged to be invalid and unenforceable by a body of competent jurisdiction, then the remaining resolution portions shall be and continue in full force and effect, except as to those resolution portions that have been adjudged invalid. The City Council of the City of Livingston hereby declares that it would have adopted this resolution and each section, subsection, clause, sentence, phrase and other portion thereof, irrespective of the fact that one or more section, subsection, clause sentence, phrase or other portion may be held invalid or unconstitutional.

Passed and adopted this 21st day of June, 2016, by the following vote:

AYES:

NOES:

ABSENT:

Rodrigo Espinoza, Mayor of the City of Livingston

ATTEST:

I, hereby certify that the foregoing resolution was regularly introduced, passed and adopted at a Regular Meeting of the City Council of the City of Livingston this 21st day of June, 2016.

Antonio Silva, City Clerk of the City of Livingston

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