HomeMy WebLinkAbout2009-06-19 MSCWMO Permit Approval Ltr to OPHMIDDLE ST, CROIX WATERSHED MANAGEMENT ORGANIZATION
1 380 WEST FRONTAGE ROAD, HIGHWAY 36
STILLWATER, MINNESTOA 5 5082
P h o n e 6 5 1 . 2 7 5 . 1 1 3 6 x 2 2 f ax 6 5 1 . 2 7 5 . 1 2 5 4 w w w . rn s c w m o . o r g
June 19th, 2009
Mr. Eric Johnson
Oak Park Hei
14168 Oak Park Blvd. N. P.O. Box 2007
Oak Park Hei MN 55082
RE on 60th
Dear Mr. Johnson,
The Middle St. Croix Watershed Mana Or (MSCWMO) received re submittal items on Ma 21 st,
2009 for the proposed McDonald's on 60th, located within MSCWMO boundaries and in the cit of Oak Park Hei
The proposed project q ualifies for ffill review tinder the MSCWMO 2006 Watershed Mana Plan ( WMP).
The project, as submitted, meets all Policies and Performance Standards contained within Section 5.0 of the MSCWMO
WMP. The MSCWMO Board approved the pro at their re board meetin on June 1 1th, 2009, with the followin
conditions/comments:
1. The applicant must provide the name and contact information for the individual who will be responsible for the lon
term operation and maintenance of the permanent stormwater mana s
This approval does not constitute approval b the cit of Oak Park Hei The enclosed checklists contain detailed
information on project review q ualification and the policies and performance standards of the WMP. MSCWMO review
process information can be downloaded from www.mscwmo.or Feel free to contact me at 651-275-1136 x22 or
ACarolan@m.nwcd.or if y ou have an q uestions re these comments.
_� V
Sincerel
a '
Am Carolan
Middle St. Croix Watershed Mana Or Administrator
cc: Eric Kello Landform En
Enclosures ( 1 )
Middle St, Croix Watershed Mana Or Member Communities
Afton, Ba Ba Lakeland, Lakeland Shores, Lake St. Croix Beach, Oak Park Hei St. Mar Point, Stillwater., Et West Lakeland
MIDDLE ST, CROIX WATERSHED MANAGEMENT ORGANIZATION
1 380 WEST FRONTAGE ROAD, HIGHWAY 36
STILLWATER, MIN NESTOA 5 5082
P h o n e 6 5 1 . 2 7 5 . 1 1 3 6 x 2 2 f a x 6 5 1 . 2 7 5 . 1 2 5 4 w w w . rn s c w rn o o r g �'
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MSCWMO PROJECT REVIEW PROCESS — POLICIES AND PERFORMANCE STANDARDS to
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This document is for g uidance. Applicants should consult the MSCWMO Watershed rP;11*t
Mana Plan (WMP) for specific re
All re of the policies and performance standards contained within Section 5 of the
WMP must be met before the MSCWMO Board will approve the project.
PROJECT NAME.*, McDONALD'S - OAK PARK HEIGHTS
THE FOLLOWING POLICIES AND PERFORMANCE STANDARDS APPLY,*$ [ A checked box indicates compliance]
Z Direct dischar of stormwater to wetlands and all other water bodies without -water q ualit y
treatment is prohibited. WMP Section 5.1.4, Polic Item I
Sources of water pollution shall be identified throu the MSCWMO data collection
pro . g ram and corrected throu the application of BMPs. WMP Section 5.1.4, Polic Item 2
Z All h studies shall anal the 24-hour two- (2.75 inch), ten- (4.15 inch) and one
hundred- (5.9. inch) critical rainfall event, with the critical duration defined as that event
causin either the hi water surface elevation or the lar peak dischar in an area or
both. An stud must use consistent methodolo for the pre-development and post-
development land use conditions. The methodolo must be approved b MSCWMO.
WMP Section 5.1.4, Polic Item 3
Z Newl developed or redeveloped areas will be limited to the predevelopment or existin
rate of runoff or to a rate within the capacit of downstream conve s
whichever is less, and no increase in the volume or rate of runoff from newl developed
areas will occur in areas where natural outlets do not exist. In sub-areas of a landlocked
watershed, development shall not increase the predevelopment volume or rate of dischar
from the sub-area for the I 0- return period event. WMP Section 5.1.4, Polic Item 4
Z Runoff will be minimized throu on-site infiltration or prevented throu reduction in
impervious surfaces to the lar extent possible before detention ponds are used. WMP
Section 5.1.4, Polic Item 5
Z Site desi practices that ma have onl a minor ne impact on peak flow and volume,
such as the use of buffer strips alon receivin waters and draina swales, will be
promoted to achieve compliance with the water q ualit y performance standard. WMP Section
5.1.4, Polic Item 6
Middle St. Croix Watershed Mana Or Member Communities
Afton, Ba Ba Lakeland, Lakeland Shores, Lake St. Croix Beach, Oak Park Hei St. Mar Point, Stillwater, a West Lakeland
N Applicants must secure an flowa easements that would be re to
accommodate the
stormwater mana facilities. These easements will be g ranted up to the I 00- flood
level. WMP Section 5.1.4, Polic Rem 7
Applicants will provide the MSCWMO with I 00- flood levels on the ponds, lakes, and
streams as parcels are developed. WMP Section 5.1.4, Polic Item 8
The MSCWMO has adopted the Washin Count Floodplain Re ( Appendix
H). WMP Section 5.1.4, Polic Item 9
Project must meet the Desi Standards for Structural Stormwater Mana Measures
of the State of Minnesota Storm water Manual, November 2(105, or the most recent edition at
www.pca.state.mn.us/water/ston-nwater/stormwater-manual.html. WMP Section 5.1.4,
Performance Standard IP- WMP Section 5.2.4, Performance Standard I
4-
Desi re for infiltration basins:
Z Ade pretreatment upstream of infiltration practice(s)
Z Construction phased so that impervious area construction is complete and
pervious areas have established ve before stormwater is introduced
into infiltration practice(s)
Z Construction phased so that infiltration prdctice(s) not excavated to final
g rade until contributin draina area full stabilized
Z Drawdown time of the infiltration practice(s) 48 hours or less
Z Infiltration of runoff from potential stormwater hotspots (PSHs), includin
industrial areas with exposed si materials, vehicle fuelin areas,
and maintenance areas, is prohibited
Z Eas access provided for routine maintenance of infiltration practice(s)
Z Proposed infiltration area(s) must be marked durin construction to
prevent heav vehicle traffic and e from travelin over them
Z: If infiltration practice(s) are present durin construction activities,
sediment and runoff must be kept from infiltration practice(s) with
diversion berms or other effective BMPs infiltration areas must never
serve as sediment control devices durin construction.
Z Maintenance plan clearl identifies lon maintenance schedule and
responsibilit
Z Emer spillwa provided
Z Separation from seasonall saturated soils or bedrock is 3 feet or more
Z Minimum setbacks from the Minnesota Department of Health are met:
Setback
Minimum Distance ( ft )
Propert line
10
Buildin foundation*
10
Private well
50
Public water suppl well
50
Sep tic s tank/]each field
35
*Minimum with s lopes directed awa from the buildin
Middle St. Croix Watershed Mana Or Member Communities
Afton, Ba y port, Ba y town, Lakeland, Lakeland Shores, Lake St. Croix Beach, Oak Park Hei St. Mar Point, Stillwater,, ft West Lakeland
LnJ
Enhanced volume runoff controls will be designed to retain on - site the first '/z inch of runoff
for all impervious areas plus VI inch of runoff for areas with compacted soils. WHIP Section
5.1.4, Pe�formance Standard 2
a. Impervious areas or surfaces are defined as a surface in the landscape that impedes
the infiltration of rainfall and results in an increased volume of surface runoff.
b. Compacted soils are defined as surfaces in the landscape where the underlying soils
are compacted by construction or other activity that impedes the infiltration of
rainfall and results in an increased volume of surface runoff.
c. In redevelopment scenarios, volume control standards apply only to areas of new
construction, where soils are compacted, runoff characteristics are changed, or
vegetation is removed.
No increase in rate of runoff leaving the site from pre - development to post - development
conditions generated by the 24 -hour two- (2.75 inch), ten- (4.15 inch) and one hundred -year
(5.9 inch) critical rainfall events. Wll11P Section 5.1.4, Performance Standard 3; WA4P
Section 5.2.4 Performance Standard 2
A Stormwater Pollution Prevention Plan (SWPPP) that meets the National Pollutant
Discharge Elimination System (NPDES) requirements must be submitted to and approved
by the MSCWMO for all projects undertaking grading, filling, or other land alteration
activities which involve movement of earth or removal of vegetation on greater than 1 0,000
square feet of land (See Appendix J for NPDES requirements). WMP Section 5.1.4,
Performance Standard 4; WMP Section 5.2.4, Performance Standard 3
SWPPP Requirements:
Description of the nature of the construction activity
Address the potential for discharge of sediment and/or other potential
pollutants from the site
Identify a person knowledgeable and experienced in the application of
erosion prevention and sediment control BMPs who will oversee the
implementation of the SWPPP and the installation, inspection and
maintenance of the erosion prevention and sediment control BMPs before
and during construction
.... ~... Identify who will have the responsibility for long-term operation and
maintenance of the permanent stor mwater management system.
® Identify a chain of responsibility with all operators on the site to ensure
that the SWPPP will be implemented and stay in effect until the
construction project is complete, the entire site has undergone final
stabilization, and a Notice of Termination has been submitted to MPCA
Narrative describing the tinning for installation of all erosion prevention
and sediment control BMPs
® Location and type of all temporary and permanent erosion prevention and
sediment control BMPS along with procedures to be used to establish
temporary BMPs as necessary for the site conditions during construction
® Standard plates and/or specifications for all BMPs used on the project
Middle St. Croix Watershed Management Organization Member Communities
Afton, Bayport, Baytown, Lakeland, Lakeland Shores, Lake 5t. Croix Beach, Oak Park Heights, St. Mary's Point, Stillwater, & West Lakeland
LL\J Site map with existing and final grades, including dividing lines and
direction of flow for all pre and post - construction stormwater runoff
drainage areas located within the project limits
Site map including impervious surface areas and soil types; area of each
must be noted (in square feet or acres)
Location of areas not to be disturbed
Location of areas where construction will be phased to minimize duration
of exposed soil areas
Identify all surface water and wetlands within' /2 mile of the project that
will receive stormwater runoff from the construction site
Methods to be used for final stabilization of all exposed soil areas
Describe procedures to routinely inspect the construction site (once every
7 days and within 24 hours after a rainfall event greater than %2 inch)
Describe practices to properly manage and dispose of solid waste
Describe practices to properly manage hazardous materials
Describe practices for external washing of trucks and other construction
vehicles (concrete trucks, etc.)
Describe spill prevention plan
Describe measures to address sanitary and septic waste
® .Direct discharge of stormwater to wetlands and all other water bodies without water ualit
�. y
treatment is prohibited. WMP Section 5.1.4, Performance Standard 5
Predevelopment conditions shall assume "good hydrologic conditions" for a pp appropriate riate land
covers as identified in TR.- 55 or an equivalent methodology. The meanings of "hydrologic
soil group" and "runoff curve number" are as determined in TR- 55. However, when
predevelopment land cover is cropland, rather than using TR- 55 values for cropland, the
following runoff curve numbers (RCN) shall be used. These curve numbers represent
midrange values for soils under a good hydrologic condition where conservation practices
are used and are selected to be protective of the resource waters. WMP Section 5.1.4,
Performance Standard 6
Hydrologic Soil Group I Runoff Curve Number
A
56
B
70
C
79
D
83
Conversion of high-permeability soils shall be avoided and these soils shall be targeted for
infiltration. WMP Section 5.1.4, Performance Standard 7
Lowest floor elevations of structures built adjacent to stormwater management features and
other water bodies must be a minimum of two feet above the I00 -year flood elevation and a
minimum of two feet above the natural overflow of landlocked basins. The landowner or
developer is required to provide MSCNWO with the location of the I 00-year flood elevation,
natural overflow elevation, and lowest floor elevations. TAMP Section 5.1.4, Performance
Standard 8
Middle 5t. Croix Watershed Management Organization Member Communities
Afton, Bayport, Baytown, Lakeland, Lakeland Shores, Lake St. Croix Beach, Oak Park Heights, St. Mary's Paint, Stillwater, F West Lakeland
Z Buffer zones of unmoved natural vegetation shall be maintained or created upslope of
delineated wetland edges, ordinary high water elevation, or floodplain of all water bodies
(wetlands, streams, lakes) in accordance with the Performance Standards relating to
wetlands, Section 5.3.4. WMP Section 5.1.4, Performance Standard .9
® Detention facilities will be designed to attenuate peak flows and provide on -site infiltration
in high - permeability soils, natural depressions, and swales. TAMP Section 5.1.4,
Performance Standard 10
Z The MSCWMO shall require proper erosion and sediment control throughout the watershed
to prevent siltation and sedimentation of streams, lakes, wetlands, and other areas of the
watershed. TAMP Section 5.2.4 Policy Item I
Both temporary (during construction) and permanent (long -term) erosion control will be
required on newly developed or redeveloped land in MSCWMO undertaking grading,
filling, or other land alteration activities which involve movement of over 100 cubic yards
of earth or removal of vegetation on greater than 10,000 square feet of land. WMP Section
5.2.4 Policy Item 2
Z Existing agricultural activities will be exempt from the perfornance standards listed in
WMP Section 5.2.4. MSCWMO will require buffers from waterbodies and support
agricultural BMPs. New agricultural activities must conform to the performance standards
listed in WMP Section 5.2.4. WMP Section 5.2.4 Policy Item 3
Z Construction is prohibited on slopes greater than 12 percent. Twelve percent (12 %) slopes
are defined as lands having average slopes 12% or greater over horizontal distances of fifty
feet ( 50) or more. WMP Section 5.2.4 Performance Standard 4
Construction is prohibited within 40 feet of the top of blufflines in urban areas and 100 feet
in rural areas. Blufflines are defined as a line along the top of a slope connecting points at
which the slope, proceeding away from the waterbody or adjoining watershed channel,
becomes less than twelve percent (12 %). The location of the bluffline shall be certified by a
registered land surveyor or the Zoning Administrator. WMP Section 5.2.4, Performance
Standard 5
® Land. alteration activities are prohibited within twenty (20) feet of the top of the bluff. Top
of bluff is defined as the highest point of a bluff with an average slope exceeding 12 %.
WMP Section 5.2.4, Performance Standard 6
Z Buffer zones of unmowed natural vegetation shall be maintained or created upslope of
delineated wetland edges, ordinary high water elevation, or floodplain of all water bodies.
(wetlands, streams, lakes) in accordance with the Performance Standards relating to
wetlands, Section 5.3.4. WMP Section 5.204 Performance Standard 7
Middle St. Croix Watershed Management Organization Member Communities
Afton, Bayport, Baytown, Lakeland, .Lakeland Shores, Lake St, Croix Beach, Oak Park Heights, St. Mary's Point, Stillwater, Et Vilest Lakeland