HomeMy WebLinkAboutExcavating & Grading Permit #13-G-04 �raic��.,�
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�'�"",���`�'.�� "EXHIBIT A"
FOR CITY USE ONLY
EXCAVATING AND GRADING PERMIT PERMIT# ,� . �: �-�r
DATE -7 1 i z� �;
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Applicant: .._ � �. �.����c�•��� �-��t'f (��Sf'/t,+c��n Phone# 4�'�Z�' J(v� -"j��a��
ProjecUDevelopment Name if Applicable: ��f � �!�.:� � �jc�",'��is`rn �r�:�<�
Address: ��5.� �j(����1 S'+.n,'�,_
Property Owner: ��Yn� `�S /-�,;;�l�ic,��} ��,�f►}�-z.i�''� Phone#
Address:
`� �.t ou��r���"� Phone# 1����'" �L•�- 5(�.;:,
Contractor: ,
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Address: 0 �-� i��i� �„'t� t ��:�°' ��...=
Consultant Engineer/Surveyor: 1'rt�b C. �Y�,�+���`f'� Phone#
Address:
Emergency Contact(24 hr): ._) Gi��d.:-- Phone# tv`�Z�`���3 �5���'�
Location of Property: "�I,��)S� �='c'icl? `>� /��
Legal Description: ���fi l �Sl��k. / ��'%t�a%��� �-�L��
Will the excavation or filling be in a: Watercourse Wetland Upland /�
Purpose for the proposed excavating or filling: Nt-�,: t��;�� C,ii>Jf��.���;h�
Estimated start date: 7� � Completion date: 7' 2`�
What is the type of material to be removed or deposited? �•,���f ri°�k ��'"'""`=(
What is the quantity of material to be removed or deposited? n�/�#
What is the total area disturbed for excavation or filling? 3���' S�ti
In what manner will the material be removed and/or deposited�''�� -1 }��-_�kf,-.�
What highway, street or other public-way will material for removal or deposition be hauled or carried? ���u r 2-I
What, if any, street, avenue, lane, alley, highway, right-of-way,thoroughfare or public ground will be obstructed? N�i4
IT SHALL BE THE RESPONSIBILITY AND THE BURDEN OF THE APPLICANT TO DEMONSTRATE TO THE SATISFACTION
OF THE CITY ENGINEER FOR THE CITY OF PRIOR LAKE THAT THE PROPOSED EXCAVATION AND/OR FILLING
COMPLIES WITH THE OVERALL CITY OF PRIOR LAKE STORM WATER MANAGEMENT PLAN. SAID BURDEN SHALL
INCLUDE THE FURNISHING OF A REPORT WITH SUPPORTING CALCULATIONS OF A REGISTERED PROFESSIONAL
ENGINEER.
Will proposed excavation or deposition affect the City of Prior Lake overall storm water management plan? Yes No�
If yes, explain proposed effect
SUBMISSION REQUIREMENTS:
(A) Completed application form
(B) Map or plat of the proposed filling or excavating showing location and amount of material proposed to be removed or
deposited,with a description of the area
(C) The depth or heights to which such removal or deposition is proposed throughout the area and the proposed angle of
all slopes to be shown on a 2' contour map at a scale of 1"=50' or larger. The proposed and original contours shall be
G:�Admin�PW Design Manua1�2007 PWDM UPDA'IE�EXI-IIBIT A AI'PLICATION FOR EXCAV&FILLING.doc
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���"'"���-'������ "EXHIBIT A"
shown including all property within 200' of proposed excavation or deposition and shall be signed by an engineer or
surveyor registered in the State of Minnesota
(D) Erosion control plan
(E) Affect on existing utilities
(F) Application fee
(G) Amount of Letter of Credit, or deposit of monies in a sum sufficient to pay the cost of restoring a site. The extra
ordinary costs of repairing, highways, streets or other public ways along designated routes of travel and to pay such
expenses as the City may incur by reason of doing anything required to be done
(H) Public liability insurance
CONDITIONS OF APPROVAL:
(1) Applicant must call the Engineering Department for erosion control inspection at (952)447-9830 prior to earth moving
activities.
(2) Maximum 4:1 slopes are allowed in "maintained" areas except approved by City Engineer. Maximum 3:1 slopes are
allowed adjacent natural resources.
(3) Slopes greater than or equal to 3:1 shall have approved erosion control Best Management Practices installed
immediately after finished grading.
(4) Minimum grade for drainage swales shall be 2% or greater.
(5) Removal or depositing of material greater than 400 cubic yards requires a conditional use permit, unless it is part of a
preliminary plat application.
(6) Applicant is responsible for obtaining and meeting the conditions outlined by other permitting agencies including but not
limited to the following: DNR, Corps of Engineer, Prior Lake/Spring Lake Watershed District, Scott County, MN/DOT,
M P CA.
(7) Applicant is responsible for all damages to other property or facilities as a result of work covered by this permit.
(8) Applicant must call the Engineering Department for final grading inspection at(952)447-9830 prior to release of grading
security.
(9) Additional Conditions:
THE UNDERSIGNED HEREIN CERTIFY THAT THEY HAVE READ SECTION 706 OF THE CITY CODE AND ACCEPT THE
TERMS AND CONDITIONS TO THE ISSUANCE OF THIS PERMIT AND AGREE TO FULLY COMPLY THEREWITH TO THE
SATISFACTION OF THE CITY OF PRIOR LAKE ENGINEERING DEPARTMENT OR ITS DESIGNATED AGENT.
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Applicant:�: t' j;o��-���-�,{��� (�1���f f;..�.�.v�� � .��--�.--��L�'� Date � � �2�- l �
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PropertyOwner. S i�r ��C1,F,.}�,_ �J,2f�-(7�. ��-� �— ..,Z��_��.s� Date `I - �2'l�
FOR CITY USE ONLY
AUTHORIZATION OF PERMIT
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Financial Guarantee Amount$ '�v�- Financial Guarantee Type' ��,-• ` � � (Letter of Credit, Bond, or Cash)
Permit Fee$ z�:; ..� �-., {, , p ,
�,.,:,
Liability Insurance provided? ❑ Yes❑ No(Insurance Certificate must name the City of Prior Lake as an additional insured party)
In consideration of agreement to comply in all respects with the regulations of the City of Prior Lake covering such operations,
and pursuant to authorization duly given by said City of Prior Lake, permission is hereby granted for the work to be done as
described in the above application and submitted drawings, said work to be done in accordance with this application and
submitted drawings.
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ENGINEERING OFFICIAL - :� � �� L 4v Date � � t'` f S
Permit is valid if signed by City Official
Permit Expiration Date �i- 4 ; � Planning Dept. Initials ��'�`�-
G�.�Admin�PW Design Manua1�2007 PWDM UPDATE�EXHIBIT A APPLICATION FOR EXCAV&FILLING.doc
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July 11,2013 Project Number:l3-347
Jacob Tupy
J.B.Woodfitter
P.O. Box 1028
Prior Lake,MN 55372
RE: REVISED Bluff Alteration Review,4853 Beach Street NE,Prior Lake,MN
Dear Mr.Tupy:
We understand a landscaping contractor disturbed the bluff area at 4853 Beach Street NE in Prior
Lake, Minnesota while working on the adjacent property at 4865 Beach Street. We further
understand the disturbances to the bluff were performed without permit(s) and were unauthorized
in accordance with City of Prior Lake (City) ordinances and/or Zoning Codes. The City issued a
"stop work order' on the property and requested that the disturbed areas be restored to their
previous condition and requested that a slope stability analysis be performed by a registered
engineer in the State of Minnesota.
JB Woodfitter retained Haugo GeoTechnical Services to perform the slope stability analysis and
provide recommendations for bluff restoration. This letter provides a brief description of the
observed bluff disturbance(s), presents the results of the global stability analysis, and presents
recommendations for restoration of the disturbed areas on the Beach Street property.
Project and Site Description
The site is located on the north shore of Prior Lake, along the south side of Beach Street, between
Bluebird Trail and Rosewood Road,and carries the mailing address of 4853 Beach Street NE in Prior
Lake, Minnesota. The site consists of a third of an acre residential lakeshore lot with the legal
description of Lot 1, Block 1 of the Berggren Beach addition. A single family house existed on the
property until early June, 2013 when it was demolished to make way for a new house. The site is
currently vacant and the ground surface is generally exposed soil, as the excavation for the proposed
new house is schedule to begin. The site sloped down from north to south, with elevations of the
site ranging from about 957 to 900 mean sea level (MSL), towards Prior Lake. The southern third of
the lot is designated a "bluff" with elevation ranging 936 to 900 MSL, including the shoreline of Prior
Lake.
To aid in our evaluation we were provided with a Certificate of Survey, prepared by Probe
Engineering Company, Inc., dated June 20th, 2013. The survey included survey information, the
1 35?C� ��avE C��iv� ��7�, I�I.a���� ��a.av�, Ml^�! �53 '� 1
proposed house location,the "Bluffline° (elevation 936 MSL) and topographic information. We were
also provided with a copy of the Unauthorized Bluff Alteration letter, prepared by the City of Prior
Lake, dated June 18th, 2013. Attached to the letter was a Certificate of Survey prepared by Valley
Surveying Co., dated June 25th,2012.
Site Observations
We conducted a site visit on June 20th, 2013. Based on our observations during the site visit, it
appears a ramp was cut into the top of the bluff,near the center of the property from east to west, to
a depth of about 4 to 5 feet. To the south of the ramp we observed some boulders and large cobbles
that appeared to be placed as a temporary retaining wall to retain a mix of topsoil and the
underlying lean clay soils.
Global Stability Analysis
We retained Gray Engineering to perform a global stability analysis of the slope in the disturbed
area. Based on photos and infarmation obtained from the site visit the disturbed area was modeled
and analyzed. Results of the global stability analysis indicated a Factor of Safety (FOS) of
approximately 1.37. Values greater than 1 indicate a stable slope. A signed copy of the results of the
global stability analysis is attached.
Discussion
Based on the results of the global stability analysis it appears that construction activities conducted
on the property have not resulted in an "unstable" slope. Our analysis has shown an FOS well in
excess of 1 indicating the slope is stable in its current condition.
In accordance with the "stop work order' the disturbed areas will need to be restored to their
original condition. Based on our observations during the site visit, the ramp area will need to
backfilled and the soil fill and boulders will need to be removed from the bluff, south of the ramp.
Finally,the bluff should be reseeded per the City's"stop work order."
Probe Engineering Company, Inc has since put together a "Bluff Restoration Plan" (Plan) dated June
18th, 2013 with revisions through July 11, 2013. The plan includes locations and elevation of the
disturbance,required erosion control measures and general survey information of the property.
The following paragraphs provide recommendations backfilling and restoring the disturbed areas.
� � 5 7 C� ����'� C7�I�� �2'7"�3� t�,+���� C���v�, t�11"*I �5� 1 �
Recommendations
We recommend that the previously placed fill, boulders and cobbles and any other soft or loose soil
placed during construction activities, if any, be removed from the disturbed area. We recommend
that fill or backfill required to restore former site grades be "benched" or "keyed" into the
underlying native soil to reduce the potential for slip planes to develop between the fill and
underlying soil. We recommend "benching" or excavating into the slope at 1 feet veriical intervals
to key the fill into the slope. We recommend each bench be a minimum of 3 feet wide.
Additional fill, if any, required to attain site grades may consist of any debris-free, non organic
mineral soil. The on-site native lean clay soils stockpiled near the recently demolish house area
appear to be suitable for fill placement. Organic soils such as topsoil, organic silt or organic clay, if
encountered, should not be reused as fill "structural fill" to restore the ramp area. It is our opinion
that topsoil or other organic soils are suitable for use within the upper 6 inches of the restored area
for use as growing medium for grasses and other vegetation.
We recommend that the restoration backfill placed to attain site grades be compacted to a minimum
of 95 percent of its standard Proctor density (ASTM D 698). Fill should be placed within 3
percentage points above and 1 percentage point below its optimum moisture content as determined
by the standard Proctor. All fill should be placed in thin lifts and be compacted with a vibratory
compactor operating in vibratory mode.
We recommend following the City of Prior Lake guidelines and specifications for seeding and turf
restoration. Similarly, we recommend following all requirement for erosion control protection
measures during the restoration. The required erosion control measures appear to be included in the
revised Bluff Restoration Plan sheet.
General
HGTS does not practice in the field of surveying; therefore the locations and elevations referenced in
this letter should be considered approximate.
Haugo GeoTechnical Services LLC has used the degree of skill and care ordinarily exercised under
similar circumstance by members of the profession currently practicing in this locality. No warranty
expressed or implied is made.
Thank you for the opportunity to assist you on this project. If you have any questions or need
additional information please contact Joe Westphal at 612-269-4027 or Paul Gionfriddo at 763-954-
1101.
1 �5 7 C� �F�C�'�J E C7 R I''�'� �'2'?�, h�!J�1��� �t�.�'V'�, h�+''I 1'"�+I �5 3� � 1
Sincerely,
HAUGO GEOTECHNICAL SERVICES,LLC
,� r,, e > ;'.
, F� ,� . z,
Paul S. Gionfriddo,P.E.
Senior Engineer
Professional Certification
I hereby certify that this plan,specification or report was
prepared by me or under my direct supervision and that I
am a duly licensed professional engineer under the laws of the
State of Minnesota.
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Joe Westphal,P.E. � �. �
Project Engineer =�,�+�''�, �'��� ;�,"°�,�
License Number 49833 �"��`�'=., , �,�*�
July 11,2013 �+,��`��IN'�',t
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Attachments: Certificate of Survey(2013)
Bluff Restoration Plan-Rev 7.11.13
Global Stability Analysis
1 3 5 71� ��[�V E C3 F�1�I� ��'?B�, M�ss.F��� ����v'�, iti+l ht 5 S 3 � 1
Global Stability Analysis for Bluff
Restoration Plan, Lot 1, Block 1,
Berggren Beach
Prior Lake, Minnesota
Prepared for:
Haugo Geotechnical Services
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PROFES510NAL'
ENGINEER
�� 41263 �.�;�:=
Professional Certification: -�
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I hereby certify that this plan, specificatii�,�,���' M����`'�'�
report was prepared by me or under my direct
supervision and that I am a duly Licensed
Professional Engineer under the laws of the
State of Minnesota
�
Marty A. Gray, PE
Principal Engineer
License Number:41263
July 11, 2013
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— Daily Field Notes
Project No: 13-347 Date: Monday,7/22/13 Report No:_
Project Name:4853 Beach Street Project Location: Prior Lake, MN
Client:JB Woodfitter Temp/Weather: 70/Partly Cloudy
Project Manager:Joe Westphal Time Arrived: 8:15 am Departed:
� . ;� � �� >,�-°� �� � }� >� ��,
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❑Compaction Testing ❑Concrete Testing ❑Cylinder Pickup ❑Proctor Pickup ❑Masonry Pickup
❑DCP ❑Rebar Inspection �Other(describe) Bluff Restoration Observation
.4 m !':�_ ,s#•�nit� s..: w� ,� 4:}'�'.
�'h�§ ���..
, ..:...e. ....., .. .. ... ....
Areas Tested: ❑Mass Grading ❑Building Pad ❑Wall Backfill ❑Slab Subgrade ❑Parking/Walks
❑Utilities ❑Roadways ❑ Bituminous ❑ Other (describe)
Method: ❑ Nuclear ❑Sandcone Number of tests: Fill Source: ❑On-site ❑Imported
Tests taken met specifications? ❑Yes ❑No ❑Waiting for Proctor results
Contractor notified of test results? ❑Yes ❑No Name of person notified:
t .
.... �. „ ,. �.y � �:
�
. ��ri �, r.. ...� � t �t� �.
Areas Tested: ❑ Footing ❑ Slab on Grade ❑ Deck ❑ Columns/Piers ❑ Walls
❑Pile Cap/Pile Fill ❑ Pavement ❑ Curb & Gutter ❑ Other(describe)
Number of Placements: Yards per placement: Method of placement:
Set# Cylinder Size Air% Slump Temp Mix Supplier Spec.Strength Truck/Ticket#
Contractor notified of test results? ❑ Yes ❑ No Name of person notified:
° �� � <
a �,.;
��� ,`p g �:, a ��� • ' �"s�,�'''�`� � ���;��
Was everything available to test/observe? �Yes ❑No Were there any delays?(Explain below if yes) ❑Yes �No
Was a copy of this report left on site? ❑Yes �No If so whom was it submitted to:
Comments/Remarks: Observed bluff restoration. It appears the fill and boulders which had been placed on the slope
have been removed. The excavated area has been backfilled with on-site soils, and it appears the soil was compacted
based on observed sheepsfoot tracks. We understand the area will be seeded today. To enhance seeding, respread
topsoil could spread over the area (typically a 6 inch layer) prior to seeding. Topsoil appears to be available on-site.
Performed By:Joe Westphal Reviewed By: Date:
This is a preliminary report and is provided solely as evidence that field observations and/or testing was performed.Observations and/or conclusions and/or
recommendation conveyed in the final report may vary from,and shall take precedence over,those indicated in a preliminary report.