HomeMy WebLinkAbout09-03-16 RESOLUTION NO. 09 -03 -16
MIDDLE ST. CROIX WATERSHED MANAGEMENT ORGANIZATION
RESOLUTION ALLOWING THE ACCUMULATION AND USE OF STORMWATER CREDITS FOR
MUNICIPAL PROJECTS
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WHEREAS Section 5.1.4 of the Middle St. Croix Watershed Management Plan states that runoff must be
managed through on -site infiltration; and
WHEREAS member communities have stated that on -site infiltration is not always feasible for municipal
projects due to site limitations;
WHEREAS to assist member communities in implementing the Policies and Performance Standards of this
Watershed Management Organization;
WHEREAS the Board proposed the following addition to the Watershed Management Plan as a minor
amendment on November 13 0 ', 2008:
When specific site conditions make the installation of infiltration features unfeasible, stormwater
management requirements set forth by the MSCWMO may be met using accumulated stormwater
credits. Criteria for an unfeasible site will be any municipal project site where infiltration BMPs cannot
be built due to the presence of:
❑ Low soil permeability
❑ Bedrock within three feet of the bottom of the infiltration feature
❑ Wells
❑ Utility locations
❑ Karst areas
❑ Contaminated soils
❑ The high potential for groundwater contamination due to infiltration
• The cost to build the infiltration feature exceeds the cap set annually by the MSCWMO
board
• Other hardships determined by the MSCWMO board
Municipalities may accumulate stormwater credits through the creation of excess infiltration area on
municipal project sites where favorable conditions exist and space allows — for their own future use.
The amount of excess infiltration area built will be calculated one year after the features are constructed.
Once official measurements of excess infiltration have been documented, the municipality may use the
accumulated stormwater credits at a ratio of 1:1. The MSCWMO will document the accumulation and
use of stormwater credits.
Municipal projects requiring the use of stormwater credits must obtain these credits from a site nearest
to the project location using the following sequencing:
• Within the same drainage area
• Within the same sub - watershed
❑ Within the same city or township
Stormwater credits may only be used on sites where infiltration BMPs are not feasible (see criteria
• above), regardless of the amount of credits a municipality holds.
A maintenance agreement must be submitted to the MSCWMO when implementing the stormwater
credit policy, which ensures the existing stormwater feature will be maintained and continue to function
properly.
Stormwater credits may only be used on municipal projects. Stormwater credits may only be •
accumulated on municipal property.
THEREFORE BE IT RESOLVED that the above resolution was passed and adopted by the City of Oak Park
Heights on MQ i' • 24 , 2009.
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