ITEM:		CONSENT CALENDAR
5.	CONSIDER AUTHORIZING A CONTRACT AMMENDMENT WITH MARTIN FEENEY FOR PERFORMING PROJECT MANAGEMENT FOR THE FINAL CONDITIONING OF THE PURE WATER MONTEREY INJECTION WELL FIELD
Meeting Date:			January 25, 2021	Budgeted:	No
From:			David J. Stoldt	Program/	Water Supply Projects
			General Manager	Line Item No.:	1-2-1
Prepared By:			Jonathan Lear	Cost Estimate:	$2,970
General Counsel Review: N/A
Committee Recommendation: The Administrative Committee reviewed this item on January 13, 2021 and recommended approval.
CEQA Compliance: This action does not constitute a project as defined by the California Environmental Quality Act Guidelines section 15378.

SUMMARY: Pure Water Monterey (PWM) began injecting water in March. In August, the wells moved into the final commissioning stage. This stage involved chemical treatment, brushing and swabbing of the well screens. The final commissioning is a step that has been performed on all injection wells in the Santa Margarita Sandstone to restore the injection well capacity after a preliminary decline following initial injection. It is the Districts experience that all injection wells in the geologic formation experience an initial decline of injection capacity and the final commissioning step returns the wells to their initial performance. Final commissioning of both wells was completed early January 2021.

DISCUSSION: Martin Feeney was retained by the District to supervise the final commissioning of the PWM injection wells. The commissioning began with DIW 1 in August and was completed with the DIW 2 work finishing in January 2021. Both wells improved in injection performance as expected. Acid treatment is a step in the commissioning process and the program specified for the PWM commissioning work was developed from the District’s experience with its ASR wells. Because the water quality of the Advanced Treated Water and the Carmel River Water differ, the amount of acid required to commission an ASR well is greater than the amount of acid required to commission the PWM wells. In the District’s experience with ASR well commissioning, acid is added to a well and after 2 days the pH of the acid water mix is close to neutral due to the reaction of the acid with minerals deposited in the well through the injection of Carmel River water. In the case of PWM, there was not as much deposition of minerals in the well so there was not as much reaction with the acid introduced into PWM injection well 1. The District’s permit to spread water on to the former Fort Ord lands has water quality specifications and the discharge water form PWM injection well 1 required treatment to reach pH neutral prior to pumping the water from the well. This process added 3 days to the estimated schedule and the increased labor is the cause for the cost increase. Martin Feeney adjusted the amount of acid added to PWM injection well 2 based on what we learned from the commissioning of well 1 and the neutralization step was not required for commission of well 2. The contract amendment to compensate Martin Feeney for the unexpected time required for the neutralization step completed during the well 1 commissioning is included as Exhibit 5-A.

RECOMMENDATION: The Administrative Committee recommends that the Board authorize the General Manager to enter into a contract amendment with Martin Feeney for $2,970 to compensate the neutralization step completed during the commissioning of PWM well 1.

BACKGROUND: The District has been investigating and operating ASR wells in the Santa Margarita Sandstone since 2001. There are now 6 wells including the Carmel River ASR and PWM projects. All 6 wells have experienced an initial drop off in performance following startup. In the Carmel River ASR wells, the commissioning step has proved to restore the wells to near their post development performance.

IMPACT TO STAFF/RESOURCES: Funds for this project were not included in the FY 2020-21 budget under “Water Supply Projects,” line item 1-2-1 and will addressed through the mid-year budget adjustment process.

EXHIBIT

5-A Contract Amendment No. 1

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