HomeMy WebLinkAbout05/05/2021 5DAGENDA BILL
CITY OF BREMERTON
CITY COUNCIL
SUBJECT:
Contract Modification Agreement No. 3 with
AquaTechnex LLC for Phoslock Treatment
and Aquatic Vegetation Harvesting of Kitsap
Lake
Study Session Date:
COUNCIL MEETING Date:
Department:
Presenter:
April 28, 2021
May 5, 2021
Public Works & Utilities
Chance Berthiaume
Phone: (360) 473-5929
SUMMARY: Kitsap Lake has a history of toxic algae blooms due to elevated levels of available
phosphorus and internal recycling of phosphorus from decomposing aquatic vegetation. In the
summer of 2020, the City started work to reduce phosphorus and control aquatic vegetation using
Phoslock, a sequestering agent, and harvesting. This contract amendment extends the work through
2021 and is the second year of the 3-year plan. Phoslock reduces available phosphorus to eliminate
blue-green algae blooms and restores water quality to an acceptable condition for use by human,
animal, and fish. Harvesting removes excess aquatic vegetation biomass to reduce phosphorus
released during decomposition. Contract modification numbering jumped #1 to #2 through an editing
error, there is not a contract modification #1. AquaTechnex will mobilize and treat the lake with
Phoslock in May and begin harvesting in June of 2021 with a possible second partial Phoslock
treatment in August. NPDES Permit coverage is in place and will be renewed during the contract
term for 2021-2022.
ATTACHMENTS: 1) AquaTechnex LLC. Goods and Services Agreement Contract Modification
No. 3; and 2) Power Point Presentation
FISCAL IMPACTS (Include Budgeted Amount): Project cost is $155,000 with funding sources split
between Stormwater Capital Fund ($77,500), and the General Fund ($77,500).
STUDY SESSION AGENDA: � Limited Presentation ❑Full Presentation
STUDY SESSION ACTION: ❑ Consent Agenda ❑x General Business ❑ Public Hearing
RECOMMENDED MOTION: Move to approve Contract Modification No. 3 to the Goods and
Services Agreement with AquaTechnex LLC; and authorize the Mayor to finalize and execute the
agreement with substantially the same terms and conditions as presented.
COUNCIL ACTION:
Approve ❑Deny ❑Table ❑Continue ❑ No Action
Form Updated 01/02/2018