HomeMy WebLinkAbout2012-0220 Barr Engineering Email Forwarding VBWD Permit Review Memorandum Julie Hultman
From: Julie Hultman
Sent: Tuesday, February 21, 2012 9:29 AM
To: Eric Johnson; Scott Richards (TPC); clong @bonestroo.com; Andy Kegley
(2- Cc: Mark Vierling; Jim Butler
/ Subject: FW: New Horizon Academy
Attachments: S3 Ecopy45212022014130.pdf; S3 Ecopy45212022014140.pdf
FYI
From: John P. Hanson f mailto:JHanson@barr.com1
Sent: Monday, February 20, 2012 2:21 PM
To: Julie Hultman
Subject: New Horizon Academy
Ms. Hultman,
Attached is a Valley Branch Watershed District (VBWD) permit review memorandum for the proposed New Horizon
Academy within Oak Park Heights. The VBWD Board will be discussing the permit request at the VBWD meeting this
(1) Thursday night. If you have any questions or comments, please let me know before Thursday.
Thank you,
John
John P. Hanson, PE
Vice President, Senior Civil Engineer
Barr Engineering Company
Engineers for the Valley Branch Watershed District
4700 West 77th Street
Minneapolis, MN 55435 -4803 1
1
Minneapolis office: 952.832.2622
Valley Branch Watershed District project office:
651.748.4230
www.barr.com www.vbwd.orq
BARR
1
•
resourceful. naturally. BARR
• engineering and environmental consultants -.
Valley Branch Watershed District Permit Review Memorandum
Subject: New Horizon Academy, Permit 2012 -03
Applicant: Jill Dunkley
Authorized Agent: Ralph Pugliara, Vice President, OPS Stillwater, LLC c/o LARC Management Inc.
Engineer: Daniel M. Parks, PE, Westwood
Date: February 16, 2012
Barr Project No.: 2380020.00 2200 330
Location 5903 Neal Avenue North (former Hollywood Video building), Oak Park Heights
Section/Township /Range Northeast quarter of Section 6, Township 29 North, Range 20 West
Project Purpose Reconstruct the parking lot, including reconstructing approximately 16,830 square feet
of bituminous and concrete, which will reduce the imperviousness on the site by
approximately 821 square feet
Conformance Summary
Issue Conforms to Comments
VBWD & WCA
Rules?
Rate Yes
• E Volume Yes See comment below and Suggested Site- Specific Condition 1.
o Quality
o * Maintenance No See Suggested Site-Specific Condition 2.
Agreement
Easement No See Applicable Standard Condition 9.
Erosion Control Plan Yes See Applicable Standard Conditions 2, 3, 7 and 8.
q Delineation NA
to
▪ MNRAM Evaluation NA
Classification ' NA
o C Filling /Sequencing NA
o ' •
Excavating NA
• ea Buffers NA
g Hydrology NA
• Replacement Plan NA
Banking Plan NA
100 -Year Flood Level NA
2 Minimum Floor NA
▪ i Elevations
11 Filling within NA
Floodplain
Easement NA
Permit Fee Yes $ 1,083.30 received on February 13, 2012.
Surety No Not estimated by developer. Likely greater than $5,000. See
Suggested Site - Specific Condition 3.
•
Comments:
The proposed stormwater management facility is an underground infiltration system. It will accept
stormwater from the subject property and some runoff from adjacent properties. The system is designed to
Barr Engineering Co. 4700 West 77th Street, Suite 200, Minneapolis, MN 55435 952.832.2600 www.barr.com
To: VBWD Managers
From: John Hanson
Subject: New Horizon Academy, Oak Park Heights, Permit 2012 -03
Date: February 16, 2012
Page: 2
Project: 2382Q020.00 2200 330
c: Ray Marshall, Ray Roemmich, Melissa Imse
accommodate the required infiltration volume (due to newly created impervious area) for the subject
property. In cases where inflow to the system exceeds the infiltration capacity, the system will allow a
bypass of stormwater. -
Because the system will accept runoff from adjacent properties, water may stand in the infiltration
chambers longer than planned and/or runoff might flush through the system and get less treatment than
expected. If the system does not drain dry quickly enough, there could be some odor and/or mosquito
issues. The system appears to be deep enough that pavement heaving is probably unlikely if water stands
in the system during freeze -thaw cycles.
Currently, the only stormwater treatment provided for the site is at some regional ponds, downstream of
the site. The proposed system will provide additional treatment, but it's unclear how much.
Suggested Site - Specific Conditions
1. If soil conditions are encountered at the proposed infiltration vault during construction that will not
allow the infiltration system to function, the VBWD Engineer shall be contacted.
2. This permit is not valid until a maintenance agreement in the general format of Appendix B of the
VBWD Rules is submitted to and approved by the VBWD Attorney.
3. Prior to construction, the required cash surety shall be submitted.
Applicable Standard Conditions
1. The VBWD Engineer and Inspector shall be notified at least three days prior to commencement of
work.
2. Erosion controls shall be installed prior to the commencement of grading operations and be maintained
throughout the construction period until turf is established. Additional erosion controls may be
required, as directed by the VBWD Inspector or VBWD Engineer.
3. All disturbed areas shall be vegetated within 14 - days of final grading.
4. This permit is not transferable.
5. The required drainage easements and access easements shall be recorded with the Washington County
Recorder's Office.
6. This permit is subject to obtaining all other permits required by governmental agencies having
jurisdiction (including a NPDES permit).
7. The applicant is responsible for removal of all temporary erosion control measures upon establishment
of permanent vegetation at the project site as determined by the VBWD Engineer and /or Inspector.
8. The following additional erosion controls shall be implemented on the site:
a. Temporary rock construction entrances shall be maintained.
b. Street sweeping shall be performed if sediment collects on streets.
c. At catch basin entrances, MnDOT standards shall be used.
d. A construction sequencing plan shall be submitted, approved, and followed.
e. Any sediment that collects in storm sewers, ponds, or other water management features shall be
removed.
9. Drainage easements shall be granted to the Valley Branch Watershed District, which cover land
adjacent to the intermittent streams and stormwater management facilities up to their 100 -year flood
elevations and which cover all ditches, storm sewers and maintenance access to the ponds.
P:\Mpls\23 MN' 82\ 2382020 \_MovedFromMpls_P\ 2012\ 2012- 03_NewHorizon\DrafMemo2.docx
To: VBWD Managers
From: John Hanson
Subject: New Horizon Academy, Oak Park Heights, Permit 2012 -03
Date: February 16, 2012
Page: 3
Project: 23820020.00 2200 330
c: Ray Marshall, Ray Roemmich, Melissa Imse
10. Return or allowed expiration of any remaining surety is dependent on the permit holder providing
proof that all required documents have been recorded (including but not limited to easements) and
providing as -built drawings that show that the project was constructed as approved by the Managers
and in conformance with the VBWD rules and regulations.
P:`Mp1s■23 MN182123820201 MovedFromMpls_P\2012` 2012 -03_NewHorizon\DraftMcmo2.docx
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