06 Galpin EC 100520CONSTRUCTION NOTES:
1. GRADING CONTRACTOR TO ANTICIPATE HAUL ROUTES TO BE LUCY RIDGE LANE AND 6. INFILTRATION AREA-
GALPIN BLVD (C.R. 117) UNLESS INDICATED/REQUESTED OTHERWISE WITH CITY 6.1. SEDIMENT CONTROLS MUST PREVENT DISCHARGE OF SEDIMENT TO BASIN
ENGINEER APPROVAL. 6.2. AREA TO BE PROTECTED FROM HEAVY EQUIPMENT
6.3. BASIN AREA NOT TO BE EXCAVATED TO FINAL GRADE OR SAND MATERIAL NOT PLACED
2. RESPECTIVE CONTRACTORS TO ANTICIPATE POTENTIAL GRADING AND UTILITY UNTIL CONTRIBUTING DRAINAGE AREAS HAVE BEEN CONSTRUCTED
STAGING AREAS AS SHOWN UNLESS INDICATED/REQUESTED OTHERWISE WITH CITY
ENGINEER APPROVAL. 7. GRADING TO OCCUR IN PROPOSED AREAS ONLY, EXISTING GROUND COVER TO REMAIN ASIS.
3. TEMPORARY SEDIMENT BASIN LOCATIONS TO BE DETERMINED BY GRADING 8. DISTURBED AREAS NEAR AND ALONG THE BANKS OF THE WATERCOURSE BE IMMEDIATELY
CONTRACTOR. BASIN LOCATIONS CAN BE ADDED TO PLANS IF NECESSARY. STABILIZED AFTER COMPLETION OF THE WORK (RULE G, SUBSECTION 3.7b)
PROPOSED DETENTION BASINS MAY BE USED AS TEMPORARY BASINS - IF SO,
ACCUMULATED SEDIMENT MUST BE REMOVED TO RESTORE THE REQUIRED 9. ALL EROSION CONTROL NOTED ON THE APPROVED PLAN SHALL BE INSTALLED PRIOR TO THE
PERMANENT POOL VOLUME AND AN ASBUILT PROVIDED. INITIATION OF ANY SITE GRADING.
4. GRADING CONTRACTOR TO ANTICIPATE POTENTIAL STOCKPILE AREAS AS SHOWN 10. STREET SWEEPING TO OCCUR IN THE EVENT OF ANY SOIL TRACKING OFFSITE THROUGHOUT
UNLESS INDICATED OR REQUESTED OTHERWISE WITH CITY ENGINEER APPROVAL. THE DURATION OF CONSTRUCTION
5. UTILITY CONTRACTOR TO ESTABLISH DEWATERING PLAN WITH CITY AND CITY 11. SWPPP TO BE PROVIDED AS REQUESTED AND AVAILABLE FOR REVIEW.
ENGINEER APPROVAL IF NEEDED.
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Construction Schedule:
Site Grading (including tree clearing): 6-7 weeks
Utility Construction: 5-6 weeks
Street Construction: 3 weeks
Minor Uitilty Installation: 2 weeks
Sidewalk and Final Restoration 2 weeks
Anticipated Grading Start Date: October 12, 2020
PROPOSED CONSTRUCTION
DISTURBED AREA = +/-19.6 ACRES
ONSITE BMPS
1. SILT FENCE - BEFORE CONSTRUCTION = 9,525 LF
2. SILT FENCE - AFTER CONSTRUCTION = 940 LF
3. EROSION BLANKET = 6,325 SY
4. CONCRETE WASHOUT =2
5. INLET PROTECTION = 43
F' -7F '-
or
ROCK ENTRANCE BERM
POST GRADING SILT FENCE
SILT FENCE
3
CONCRETE WASHOUT
INLET PROTECTION
EROSION BLANKET
RILEY PURGATORY BLUFF CREEK WATER SHED DISTRICT EROSION CONTROL NOTES:
a. Natural topography and soll conditions must be protected, Including retention onsite of
native topsoil to the greatest extent possible
b. Construction should Include minimization of the disturbance Intensity and duration,
including phasing of disturbance to minimize quantity of disturbed area at any one time.
c. Additional measures such as hydraulic mulching and other practices as specified b the
, Y 9 P P Y
District must be used on slopes of 3:1 (H:V) or steeper to provide adequate stabilization.
d. Final site stabilization measures must specify that at least six inches of topsoil or organic
matter be spread and incorporated into the underlying soil during final site treatment
wherever topsoil has been removed.
e. Soil Surfaces compacted during construction and remaining pervious areas upon
completion of construction must be decompacted to achieve:
1. a soil compaction testing pressure of less than 1,400 kilopascals, or200 pounds per
square inch in the upper 12 inches of soil or,
ii. a bulk density of less than 1.4 grams per cubic centimeter of 87 pounds per cubic
foot in the upper 12 inches of soil.
f. Construction site waste such as discarded building materials, concrete truck washout,
chemicals, litter and sanitary waste must be properly managed.
g. All temporary erosion and sediment control BMPs must be maintained until completion of
construction and vegetation is established sufficiently to ensure stability of the site, as
determined by the District.
h. All temporary erosion and sediment control BMPs must be removed upon final
stabilization.
I. Soil surfaces compacted during construction and remaining pervious upon completion of
construction must be decempacted through soil amendment and/or ripping to a depth of
18 inches (8 inches for single-family home properties)while taking care to avoid utilities,
tree roots and other existing vegetation priortofinal revegetation or other stabilization.
(builder. 20' in the front yard, side yards (where possible), and 25' benind the home site)
j. All disturbed areas must be stabilized within 7 calendardays after land -disturbing work
has temporarily or permanently ceased on a property that drains to an impaired water,
within 14 days elsewhere.
k. The permittee must, at a minimum, inspect, maintain and repairall disturbed surfaces and
all erosion and sediment control facilities and soil stabilization measures everyday work is
performed on the site and at least weekly until land -disturbing activity has ceased.
Thereafter, the permittee must perform these responsibilities at least weekly until
vegetative cover is established. The permittee will maintain a log of activities under this
section for inspection by the Districton request.
Activities must be conducted so as to minimize the potential transfer of aquatic invasive species (e.g.,
zebra mussels, Eurasian watermilfoil, etc.) to the maximum extent possible.
DENOTES DRAINAGE DIRECTION
Developer Contact Information:
Chan Three Development, Inc,
10850 Old County Road 15
Suite 200
Plymouth, MN 55441
NO RTN
Craig Allen
cell: 952-270-4473
EXISTING UTILITIES SHOWN ARE SHOWN IN AN APPROXIMATE WAY ONLY. THE
100 50 0 50 100 200
email: craig@gonyeacompany.com
CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF ANYAND ALL EXISTING
BEFORE COMMENCING WORK. HE AGREES TO BE FULLY RESPONSIBLE FOR ANY
n—n —�—� ®❑ El El
AND ALL DAMAGES ARISING OUT OF HIS FAILURE TO EXACTLY LOCATE AND PRESERVE ANY
SLE IN FEET
AND ALL EXISTING UTILITIES.
DRAWING NAME NO.
BY DATE
REVISIONS
USE (INCLUDING COPYING, DISTRIBUTION, AND/OR CONVEYANCE OF
I HEREBY CERTIFY THAT THIS PLAN OR SPECIFICATION WAS
soR
CITY PROJECT NO.
FILE NO.
sheets Erosion 01
_MJV07/2_9/2_0
_ _ _ _ LAYOUT REVISIONS _
INFORMATION) OF THIS PRODUCT IS STRICTLY PROHIBITED WITHOUT
PREPARED BY ME OR UNDER MY DIRECT SUPERVISION AND THAT 1
ERs
2020-12
EROSION CONTROL PLAN
3120-079
DRAWN BY 02
—
MJV 08/27/20
-- ---
RPBCWD COMMENTSSATHRE-BERGQUIST,
--------------- —
INC.'s EXPRESS WRITTEN AUTHORIZATION. USE WITHOUT
SAID AUTHORIZATION CONSTITUTES AN ILLEGITIMATE USE AND SHALL THEREBY
AMA DULY REGISTERED PROFESSIONAL ENGINEER UNDER THE
LAWS OF THE STATE OF MINNESOTA.
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w
SAT H RE-BERGQUIST INC.
EKE 03
CHECKED BY 04
MJV 09/04/20
MJV 09/16/20
CITY COMMENTS
CITY COMMENTS
INDEMNIFY INC. OF LLRESPONSIBILITY.
/
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#
150 SOUTH BROADWAY WAY 1, MN. 55391
CHANHASSEN,
THE BLUFFS AT LAKE LUCY
16
_ _ _ _ —
INC. RESERVES THE RIGHT TO HOLD ANY ILLEGITIMATE
,_
S, /�/.��j
o ,,,
(952)47&-6000
RSM
DATE
MJV 09/23/20
___CITY&RPBCWDCOMMENTS —
COMMENTS
USER O-BERGQUIST,
USER ORPARIMATEU LLYRESPONSIBLEFORDAMAGESORLOSSESRESULTING
ROBERT S. M LSTAD, P.E.
�"�
��YFRs
MINNESOTA
CHAN THREE DEVELOPMENT, INC.
06
O6
_MJ_V 09/2_9/2_0
_ _ _CIN_&_RPBCW_D _ _
FROM ILLEGITIMATE USE.
/
Date: 07 08 ZO Lic. No. Zpl-/�8
Pvp\'`�
33
07/OSY20 07
MJV 10/05/20
CITY & MCES COMMENTS