HomeMy WebLinkAboutRyan EAW
. Background
. Discussion of issues
At · EAW purpose and process
: . EAW decision
City Council Workshop
December 18, 2000
Environmental Assessment Worksheet
Ryan Contracting Mining and
Excavation Permit
Presentation Format
Application History
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Background
. The City Council received a petition to
require an EAW as a result of an application
for a CUP to allow mining and excavation on
the McKenna property
. The City Council adopted Resolution #00-12
on February 12, 2000 ordering the
preparation of the EAW
Discussion of Issues
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Issues Identified by the Council
. Potential impacts on bedrock
topography and bedrock hydrology
. Potential impacts on groundwater
. Potential impacts on SMDC well and
wellhead protection area
. Potential impacts on lakes, wetlands,
the Boiling Spring and the Savage Fen
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Bedrock.To 0 ra h & Bedrock
Hydrology
. Existing depth to bedrock is 130' minimum
(140' average)
. Under operating conditions, depth to bedrock
will be at 100' minimum (110' average)
. There are no sinkholes or karst conditions in
this site area
. Existing depth to groundwater is 70'
minimum (+80' average)
. Under operating conditions, depth to
groundwater will be at 42' minimum (50'
average)
. The bedrock aquifer on the site is not
considered susceptible to short.term
contamination due to depth to groundwater
and less permeable unconsolidated soils
rotectlon Area
. The SMDC Well is located 1/3 mile northwest,
and down gradient of the site
. Mitigative measures used to prevent
contamination include:
. Compliance with local, state & federal
regulations
. Use of best management practices
. Maintenance and protection of on-site
monitoring well
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lakes Wetlands the Boilin
Springs & the Savage Fen
. The site generally drains north and west,
away from the Boiling Springs and the
Savage Fen
. Surface runoff will be directed to an on-site
sedimentation pond to allow sediment to
settle before exiting site
Environmental Assessment
Worksheet
Purpose
Process
EAW Purpose
. Designed to set out the basic facts necessary
to determine whether an Environmental
Impact Statement (EIS) Is required
. Legal purpose:
. Provide the Information necessary to determine
the potential for significant environmental effects
. Inform the public about the project
. Identify mitigative measures
TI -----"-
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EAW Process
. Project proposer supplies data to RGU
. RGU prepares the EAW
'. . The public has 30 days to comment on the
EAW
. RGU makes a decision on the need for an EIS
Comment Period
. Notice of the EAW was published in the Prior
Lake American and in the EQB Monitor
. The EAW was distributed to federal, state and
local agencies for review and comment
. The 30-day comment period expires on
December27,2000
EAW Decision
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Decision
. The City Council is the Responsible
Governmental Unit (RGU)
. The City Council Is the designated body
which will make a decision on the EAW
Decision
. Must be made within 30 days following the
expiration of the comment period
. Must be based on specific findings of fact
. A "negative declaration" means there Is no
need for an EIS
. A "positive declaration" calls for an EIS
based on specific findings
. Type, extent and reversibility of environmental
effects
. Cumulative potential effects of related or
anticipated future projects
. The extent to which environmental effects are
subject to mitigation by ongoing public
regulatory authority
. The extent to which environmental effects can
be anticipated & controlled as a result of other
environmental studies
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,.-
Criteria for Decision on Need for EIS:
. The decision on the need for an EIS must
also be based on information contained
within the EAW
Limitations of an EIS
. An EIS is not a means to approve or deny a
project, but a source of information on which
. to base decisions
..', . Generally, the information in an EIS is the
. basis for various conditions to mitigate any
impact
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