|
STORM WATER POLLUTION PREVENTION PLAN FOR
<br />MICHAEL HUTHW AITE
<br />OF LOTS 8-11, BLOCK 5.,,_ BAYSIDE ADDITION TO LAKE MINNETONKA
<br />HENNJ?;PIN COUNTY, MINNESOTA -----~-(948.7)
<br />EXISTING
<br />I I \_ HOUSE j
<br />\
<br />\ I t3390 \ \ ~!fl·
<br />\
<br />\
<br />(><4-9) •• ••• ..~o \ : • .. />.
<br />\ \
<br />.. · "/•
<br />\
<br />\ \ . •.. .
<br />\
<br />(936.~
<br />""
<br />\
<br />\
<br />\
<br />\
<br />\
<br />\
<br />\
<br />\
<br />\ \ \iii'~ .:t .,'o._ ... -s <j \
<br />"" "" "" "" ~
<br />\
<br />\
<br />\
<br />~
<br />(9J6.8)
<br />\
<br />~
<br />~
<br />-S" PVC SANTARY SEWR \"'(
<br />0 20
<br />!""''"'~
<br />SCALE
<br />40
<br />i
<br />IN
<br />Temporary Erosion Control and Sequencing
<br />FEET
<br />1. Install perimeter control fencing per the standard detail plates. No more than
<br />600 linear feet of silt fence should be continuous and collecting at one point.
<br />Undulate the silt fence or use "sirnles" or crescents of silt fence.
<br />2. Use horizontal slope grading
<br />3. Install erosion control around any temporary dirt stockpile areas.
<br />4. All septic areas to be fenced off for protection. Protection to extend a
<br />minimum of 20' outside of septic areas.
<br />5. The contractor for the project shal inspect all erosion control BMP's after
<br />each rainfall and repair as necessary and remove sediment from sitf fences
<br />n It reaches 1/3 capacity.
<br />6. The contractor shall schedule his operations to minimize the amount of
<br />disturbed area at any given time. The contractor shall limit his activities
<br />to the grading limits as shown. ·
<br />7. Remove all temporary BMP's once the site has reached final stabilization (a
<br />unifonn perennial vegetative cover with a density of 70 percent over all pervious
<br />surface areas).
<br />Pennanent Erosion Control
<br />1. All exposed soils on site must be stabilized with in 3 days:
<br />a. Stabilization on slopes flatter than 4:1 consists of disc-anchored
<br />mulch and seed; stabilization on slopes flatter than 4:1 and in areas
<br />of concentrated flows consists of erosion blankets and seed.
<br />2. Temporary mulch and seed is needed tor exposed areas which sit fallow for
<br />3:1 or steeper in 7 days, 3:1 to 10:1 in 14 days, and flatter than 10:1 in 21
<br />days. Also open stockpiles need to have temporary stabilization n they are to
<br />remain inactive for more than 7 days.
<br />STORM WATER POLLUTION PREVENTION PLAN BEFORE AND DURING CONSTRUCTION
<br />1. The following stonn water pollution prevention measures are shown
<br />on the plans and shall be implemented prior to construction:
<br />• Install silt fence around the perimeter of areas to be graded as
<br />shown on the stonn water pollution plan.
<br />• All temporary stockpiles must have silt fence around them to trap
<br />sediment.
<br />• Phase grading won< to minimize the duration that any disturbed soH
<br />is exposed.
<br />• Seed and mulch must be applied within 72 hours after rough grading is
<br />complete.
<br />• Locate stockpiles a minimum of 50 feet from ponds and site drainage routes.
<br />• Remove any sediment that has been tracked onto public or private streets
<br />within hours.
<br />* Remove any spill 01 fuel, oil, or other chemical immediately upon detection.
<br />• Store construction materials in an orderly manner.
<br />• Repair silt fences, rock construction entrances. and other erosion and
<br />sediment controls as needed.
<br />2. Storm Water Pollution Prevention After Construction
<br />The contractor shall implement the following stonn water pollution prevention
<br />measures after construction:
<br />• All distrubed areas without pennanent impenneable surfaces will be
<br />vegetated for final stabilization.
<br />• Silt fence and other erosion and sediment control devices will be removed
<br />after vegetation is established
<br />• Contractor shall maintain a construction activity log with dates of major
<br />grading activities, dates grading stops and spills.
<br />• Keep SWPPP and inspection log accessible on site.
<br />~-~--~-~..;:.::
<br />(i) ~ ~"""' -w-
<br />I B --1 SHED -9.fs--_ __ -
<br />I ---
<br />4b ~J 1
<br />I
<br />I s
<br />~
<br />(/)
<br />0
<br />0
<br />0
<br />'---0 0-
<br />\
<br />0
<br />0 =
<br />rrl
<br />\
<br />'---
<br />-----
<br />(94-<.9)
<br />-'
<br />'-._
<br />(')
<br />~
<br />tJ:j
<br />UJ.
<br />~
<br />tJ:j
<br />~
<br />,941.9)
<br />MAlffllE
<br />~\ >
<br />/ <1<•39.2)
<br />I tJ:j
<br />---..../
<br />IZ
<br />IC
<br />I tJ:j
<br />I
<br />I
<br />I
<br />I
<br />~
<br />~
<br />/:
<br />If
<br />.:i
<br />40
<br />--/ I
<br />l(l
<br />:,;
<br />;o
<br />I
<br />939.J)
<br />Si~~o,1-~·-........... N 89°46' 11" W 107.00················ )
<br />~l"q,;"ll"f:
<br />(9;t.9)
<br />--------?o,[Dc.'f: / -..__ Di,,_ Qr, ./ -~-~----~~-------
<br />) BAYSIDE ROAD /
<br />8" PVC SANITARY SEWER / ~
<br />(9Jll.7) (9J9.J)
<br />3. Notification
<br />• If sediment from the site is observed on adjacent streets or other properties,
<br />the contractor shall remove the sediment within 24 hoers of detection or notification.
<br />• If sediment from the site is observed on adjacent streets or other properties, the
<br />inspector shall identify the source and discharge location of the sediment and instruct
<br />the contractor to implement additional erosion .:md sediment controls at those
<br />locations to prevent future discharges.
<br />• rf building materials, chemicals, or gener2J refuse is being used, stored, disposed
<br />of, or otherwise managed inappropriately, the contractor shan correct such detects
<br />within 24 hours of detection or notifir.ation.
<br />• If excessive sediments or debris ara observed at the flared end section outfalls,
<br />the inspector shall determine tt,e source and discharge locations of such materials.
<br />If the discharge has occurred on the property, the contractor shall remove the
<br />sediments and debris within 24 hours of notification and correct the source of
<br />such materials as directod by the inspector.
<br />LE <;AI_ DESCRIPTION OF PR~UIS~S
<br />Lot.s 8, 9. 10, ond 11 , Block 5, Bayside Addition to Lake Minnetonka
<br />o : denotes iron marker
<br />(908.3): denotes existing spot elevation, mean sea level datum
<br />I 91 0 .8 I : denotes proposed spot elevation, meon sea level datum
<br />_ -917--: denotes existing contour line, mean sea ievel datum
<br />~: denotes proposed contour line, mean sea level datum
<br />Bearings shown are bosed upon an assumed datum.
<br />This survey shows the bo1X1daries of the above described property, the locotion of an existing
<br />creek, and the proposed location of a proposed house, porch, patio. wolls, contours, grodes,
<br />and driveway thereon. It does not purport to show any other improvements or encroachments.
<br /><D
<br /><D
<br />I
<br />DATE DESrnlPTION $ GRONBERG AND
<br />0-2J-09 ffiOPOSlll t<XJSE, ORIVEWAY, PATIO'S AN> WALLS 5"0WN P • ASSOCIATES INC
<br />DESIGNED REVISION I hereby certify that this survey was prepared by me,
<br />or under my direct supervision, and that I am a duly
<br />registered Civil Engineer and Land Surveyor under the
<br />laws of the State of Minnesota.
<br />SCALE
<br />1"•20'
<br />DRAWN -9-25--09 PR.a>OSEO GRADES AN> SI. T FENCE SI-OWN , •
<br />J 10-12-09 llEl.tUTEO WETLAN> NO SLff"ER AOOEO CONSULTING ENGINEERS, LAND
<br />• SURVEYORS, & SITE PLANNERS
<br />CHECKED -445 NORTH WILLOW DRIVE
<br />09-239A
<br />LONG LAKE, MN. 55356
<br />952-473-4141 Mork
<br />DATE
<br />9-~
<br />JOB NO.
<br />09-239A
<br />11·11·. :.:-.:·· .. -·-.::;
<br />~1 1iBJ~
<br />~o;(l~
<br />"O
<br />()
<br />m >< =r-e= ;:;:
<br />~
|