HomeMy WebLinkAboutX-B-01 Approve Budget Adjustment for the Lake Isabel Park Contamination Excavation and Backfill
City Council Memorandum
To: Mayor Fasbender & City Councilmembers
From: Chris Jenkins, Parks & Recreation Director
Date: October 16, 2023
Item: Budget Adjustment – Lake Isabel Park Contamination Excavation and
Backfill
Council Action Requested: Approve budget adjustment for the removal of
contaminated soils, and backfill at Lake Isabel Park.
Background Information: Earlier this summer, during excavation for the
redevelopment of Lake Isabel Park, asbestos containing materials were
discovered. During analysis of those soils, lead was also discovered. Exploratory
excavations were conducted to learn the extent of the contamination, and those
sample were also sampled. The extent of contamination was mapped out, and an
estimated 3,800 cubic yards of soils are contaminated and need to be removed and
replaced with clean fill in order to move forward.
As a park facility, the MPCA requires 4 feet of separation between any
contaminated soils and the surface of the soils. Because of bedrock and ADA
components of this redevelopment, this requires an excavation and replacement of
4ft of soils.
Staff have researched grant opportunities, however no opportunities have been
found that meet our needs or for which our project meets the criteria.
Staff propose utilizing the 401 Fund (Park Projects) to cover the significant extra
cost of the soil removal, disposal and replacement at an estimated $350,000.00.
Staff are requesting a budget adjustment to dedicate $385,000.00 from fund 401
for the Lake Isabel Park project for the express purpose of removing, disposing of
and replacing the contaminated soils. This amount adds a 10% contingency, that if
not spent will remain in the 401 fund for future projects.
Financial Impact:
Up to $385,000.00 of unexpected expenses being covered by Fund 401, which has
a current undesignated balance of $444,700.00.
Advisory Commission Discussion: N/A
Council Committee Discussion: N/A
Attachments:
▪ Price Estimates
X-B-01
Lake Isabel Park Contaminated Soils Excavation, Disposal and Replacement.
Remove 963 CY Asbestos soils: $88.00/CY = $84,744
Remove 2856 CY Debris/Lead soils: $54.75/CY= $156,366
Common Borrow Import: $23.50/CY=$89,746.50
Topsoil Import: $41.00/CY (assumed 4” over 21,500 SF) =$10,882.60
$342,739.10 +/-
X-B-01