|
---- \ - -\ \\-------------��s // LEGEND
<br />i --- m --950 --- EXISTING CONTOURS rn8
<br />1 \ /� NON z
<br />/ - - - - - - - s 950 PRO POSED CONTOURS -MAJOR INTERVAL 950.00 TC SPOT ABBREVIATIONS
<br />`=v
<br />NS: a
<br />TC-TOP OF CURB
<br />949 PROPOSED CONTOURS - MINOR INTERVAL 949.50 GL GL-GUTTER LINE N =mF,
<br />- - - - - - - - - - - GRADE BREAK LINE GOGUTTEROUT
<br />\ \ / -� / 1 GRADE SLOPE B- BITUMINOUS
<br />C- CONCRETE
<br />_ \ �_ __--- J SILT FENCE _
<br />\ \ \ RIP RAP /ROCK CONST ENTRANCE _ _ _ _ EO EMERGENCY OVERFLOW 0
<br />\/ \ s TW-TOTTOMP OF OF
<br />------ _____--------------- - \'�° � BW-BOTTOM OF WALL (FIG)
<br />EXISTING TO BE VERIFIEDway
<br />INLET PROTECTION,
<br />__-- \-- a
<br />// \�� I � �-----__----�-_------_---�\-__--- SEE DETAIL 5/C501 p�rc
<br />EROSION CONTROL BLANKET, `- _ _ J CONCRETE WASHOUT STATION w
<br />�------ -------- -- ---_ \ .1 T' (TO BE DETERMINED ON -SITE) 3aaa _
<br />\\ \ I 9 }---_--------- _� I SEE DETAIL 7/C501 �s��
<br />928 \ */ ,�----------\ I ,930.27 C` 929.66 GL'
<br />' / a T /929.07G0 sao.11c C i -WI GRADING NOTESoaN
<br />928.93 TC / , 929.96 GO \ 2 .2 T \^ I \
<br />928.43 GO i \ , \ / w ff
<br />/ 928.79 G I ,* r 1. Tree protection consisting of snow fence or safety fence installed at the drip line shall be in place prior to beginning any e
<br />2 .4 T 929.55 GL/TC grading or demolition work at the site.
<br />927,95GL i / I/ 928.93 GL \ 1 s
<br />\ \ \ \Ul I \ I I .50 GL/TC _ M w S
<br />\ I I 1 \ I p 1 T � � _ - / ai 2 - 2. All elevations with an asterisk (`) shall be field verifed. If elevations vary significantly, notify the Engineer forfurlher
<br />I- - a 930.13 TC h instructions.
<br />927.69 GL Nry \ � `'s / / I \ A`ti 928.87 TC \ 929.63 GL , ±
<br />\ \ 929.96 TC / 928.76 GL?C V
<br />927.72 TC - - _ I / \� 928.37 RIM \ INLET PROTECTION ~ 5 3. Grades shown in paved areas represent finish elevation.
<br />« '< <ST 929.46 GL « <� 929.33 TC < \ 929.71 TC i TYP. P P
<br />1 \ \ \ \ \ \ 927.42 GL - - - ( 928.83 GL 929.21 GL (TYP.)
<br />C501 Z
<br />INLET FHOTECTION - - 928.31 GO a 29.07 C` 4. Restore all disturbed areas, see Landscape Plan.
<br />C501 (TYP') - / 930.00 FFE 2 I 929.10 GL/TC
<br />/ \ - 9.15 C \ 5. All construction shall be performed in accordance with state and local standard specifications for construction.
<br />\ I / / 928.50 GL I I v%
<br />928.97 TC / r
<br />928.28 TC 929.30 TC \ 928.92 TC / 928.97 GLCTC F
<br />928.50 GO .. 2 / _
<br />\ / - 927.78GL P 928.80G0 \ \ 2 O 928.98Go / 929.29TC` / EROSION CONTROL NOTES V
<br />( / ,' I , 928.79 GL` ./ W
<br />! g27,s- 930.00 FFE \ .� 929.11 C 4 929.10 TC
<br />LJ " / 928.60 GO I 2 .1. w 1. Owner and Contractor shall obtain MPCA-NPDES permit. Contractor shall be responsible for all fees pertaining to this permit. The r_
<br />\ 28.49 GUTC / 929.22 C I
<br />\ \ SWPPP shall be kept onsite at all times.
<br />\\ 928.02T / / I \ I X Lit
<br />\ 928.52 GL / / Wv
<br />�\ p mm o 2. Install temporary erosion control measures (inlet protection, silt fence, and rock construction entrances) prior to beginning any F N
<br />�'92excavation or demolition work at the site. j
<br />929.93 TC N
<br />929.43 GO \ \ \ \ Q
<br />\ - - 929.76 T 2 .47 C \mmP \ 3. Erosion control measures shown on the erosion control plan are the absolute minimum. The contractor shall install temporary earth Q H
<br />/ \ \ \ \ 929.26 GO �/» \ dikes, sediment traps or basins, additional siltation fencing, and/or disk the soil parallel to the contours as deemed necessary to further y
<br />29, .77 T - - \\ \ \ \ \ \ 929.59 GO 1 control erosion. All changes shall be recorded in the SWPPP. > w
<br />92.27 GO- _ '� \ \ \ 2 . T \ \ / g N QZ
<br />928.25 GL A _ , \ \ \ \ \ 929.10 GO 4. All construction site entrances shall be surfaced with crushed rock across the entire width of the entrance and from the entrance to a
<br />928.90 GO 9.S C \ \ 930.00 GL 930.07 TC 2 . T I g28.20 GL* �' point 50' into the construction zone.
<br />1 929.57 GL 929.18 GL Q r/1
<br />929.24 GO - \ \ \ - O a 7
<br />/ \ / `�-/�\ 5. The toe of the silt fence shall be trenched in a minimum of 6'. The trench backfill shall be compacted with a vibratory plate compactor. r = O
<br />930.00 FFE
<br />_ m _ _ 928.07 GL` - 6. All grading operations shall be conducted in a manner to minimize the potential for site erosion. Sediment control practices must be W p w
<br />9 y 929.75 GL \ \ \\ \ \ \ \ \ established on all down gradient perimeters before any up gradient land disturbing activities begin. ' w Z
<br />928.41 GL/TC MM o Z
<br />\ 1
<br />/ ) � 7. All exposed soil areas must be stabilized as soon as possible to limit soil erosion but in no rase later than 14 days after the construction
<br />INLET PROTECTION \\ / / / activity in that portion of the site has temporarily or permanently ceased. Temporary stockpiles without significant silt, clay or organic
<br />Y / 928.34 GO -- - +� ) / / / / - Y 928.52 GL/TC c aggregate pi stockpiles, stockpiles) an components
<br />/ (TYP.) \ ,-- - 930.14 TC / / / aa, components (e.g., clean a to stockpiles, demolition concrete stoc les, sand stock files d the constructed base coo is
<br />< « I / / / 928.40 GO \ I `G of roads, parking lots and similar surfaces are exem t from this requirement.
<br />�\ .\ 929.84 GL / / / / \ N P 9 P qui
<br />I \
<br />/ I /
<br />< / II
<br />927.82 TC ` / / 929.00 GL /
<br />\�927.52 GL ;\\ 2 / 1 T /,,11 8. The normal wetted perimeter of any temporary or permanent drainage ditch or Swale that drains water from any portion of the
<br />928.41 GL / / PROP ED f IR S/T iION I / construction site, or diverts water around the site, must be stabilized within 200 lineal feet from the property edge, or from the point of
<br />F, '0 \ I I 1 discharge into any surface water. Stabilization of the last 200 lineal feet must be completed within 24 hours after connecting to a
<br />FFFx 30"00 lARCH(100'-0") I �\ g portions of any temporary or permanent ditches or swales must be complete within 14 S surface water. Stabilization of the remaining
<br />RIP RAP ATFFE", o
<br />'I C501 OUTLET P. \ \� _ cc snH (N days after connecting to a surface water and construction in that portion of the ditch has temporarily or permanently ceased.
<br />9. Pipe outlets must be provided with energy dissipation within 24 hours of connection to surface water.
<br />930.00 FIFE
<br />10. All riprap shall be installed with a filter material or soil separation fabric and comply with the Minnesota Department of Transportation
<br />'4 I I III \ g2g_g2 TC o° do 00o ROCK CONSTRUCTION 1 Standard Specifications.
<br />T I I I 927.72 GL - - \\ o°o°o°� o ENTRANCE (TYP.) C501 11. All storm sewers discharging into wetlands or water bodies shall outlet at or below the normal water level of the respective wetland or in
<br />N _ m
<br />m
<br />/ I I Y y---- ----- 930.00 FIFE \ / water body at an elevation where the downstream slope is 1 percent or Flatter. The normal water level shall be the invert elevation of
<br />/ I 930.00 FIFE 27. 1 T
<br />82741 GL \\ the outlet of the wetland or water body.
<br />-2=� - - - - - - - /27 2 I \ I \\ \ 9z7.08 GL/TC 12. All storm sewer catch basins not needed for site drainage during construction shall be covered to prevent mnoff from entering the storm w
<br />2 2 - - _ / I I \ \ sewer system. Catch basins necessary for site drainage during construction shall be provided with inlet protection. o
<br />930.00 FFE 1 2 . / 1 I 13. In areas where concentrated flows occur h as swales and areas in front of storm catch basins and intakes the erosion control o
<br />I \ INLET PROTECTION
<br />(TYP.) w a �S 1 I (such )
<br />J 1 I \ \ ( ) 1 / -- - - - - - - - / / facilities shall be backed by stabilization structure to protect those facilities from the concentrated Flows.
<br />Z Q I 11 ,Y927.00 GL?C
<br />14. Inspect the construction site once every seven days during active construction and within 24 hours after a rainfall event greater than 0.5
<br />BID ROLL TYP. Q I / inches n 24 hours All inspections shall be recorded n the SWPPP
<br />LJ \ # C501 II -_--i No FIFE
<br />I I FIFE 927.14 TC* a 15. All BMPs must be repaired, replaced, or supplemented when they become nonfunctional or the sediment reaches 113 of the capacity.
<br />926.64 GL` These repairs must be made within 24 hours of discovery, or as soon as field conditions allow access. All repaire shall be recorded in
<br />\ I I I I I INLET PROTECTION e �ry ryN 926.72 C / the SWPPP. 2022
<br />(TYP.) „�
<br />I I C501 y / I 16. If sediment escapes the construction site, off -site accumulations of sediment must be removed me manner and at a frequency
<br />\ II 92ss4 cC /\I` °'� - _- „ \\ / sufficient to minimize off -site impacts.
<br />RIP RAP AT OUTLET, EXTEND
<br />\ SILT FENCE (TYP.) I / - \ - - 17. All soils tracked onto pavement shall be removed daily.
<br />RIP -RAP TO CURB AT THE
<br />929.00 GL - - - C501
<br />SIDES OF RAIN GUARDIAN
<br />A I 9 18. All filtration areas must be inspected to ensure that no sediment from ongoing construction activity is reaching the filtration area and
<br />.1 T TC 929.00 GL o I
<br />- - I �I these areas are protected from compaction due to construction equipment driving.
<br />\ I 928 9�GL � 929.80 GL 929.38 GL � ill BID ROLL (TVP.) 2 � _
<br />927 C501 19. Temporary soil stockpiles must have silt fence or other effective sediment controls, and cannot be laced in surface waters, including
<br />926 1 P rY P P 9
<br />RIP RAP AT OUTLET, EXTEND g 924 9 3 9 V a stormwater conveyances such as curb and gutter systems, or conduits and ditches unless there is a bypass in place for the stormwater.
<br />RIP-RAP TO CURB AT THE z? 923 --- ----- INLET PROTECTION 5 \ I \ 1 / 1 3
<br />C501 SIDES OF RAIN GUARDIAN 923 ryp RIP RAP AT e E
<br />\IV 924 -' (TYP.) C501 1 20. Collected sediment, asphalt and concrete millings, floating debris, paper, plastic, fabric, construction and demolition debris and other
<br />I OUTLET C501 /
<br />_ - - _ _ _ 925 1 / I wastes must be disposed of properly and must comply with MPCA disposal requirements. Q
<br />924 I _ I 21. Oil, gasoline, paint and any hazardous substances must be properly stored, including secondary containment, to prevent spills, leaks or
<br />925.00 G / other discharge. Restricted access to storage areas must be provided to
<br />I g g p prevent vandalism. Storage and disposal of hazardous waste 00
<br />I \ I\ must be in compliance with MPCA regulations.
<br />\ I SILT FENCE (TYP.) - - - - - - - - - ` / / \\,,----�� // RIP RAP AT SILT FENCE (TYPI) \ 22. External washing of trucks and other construction vehicles must be limited to a defined area of the site. Runoff must be contained and I.L ro-re C501 - 61 FILTRATI NBA IN #1 RIP RAP AT OVERFLOW (TYP.) C503 I I I, C501 \ waste properly disposed of. No engine degreasing is allowed onsite.
<br />UrvDER \ no - - - - - - - - _ - - BASIN BTM: 922.00 OUTLET TYP. 1 / \
<br />(su slEo ea srvovp 2 RIP RAP AT _--- ----- eg OUTLET(TYP.) C501 I r�
<br />a OUTLET: 923.70 \ \ L 23. All liquid and solid wastes generated b concrete washout operations must be contained in a leak -proof containment facility or
<br />p C503 OVERFLOW (TYP.) C501 a, / I I I ,�' \ q 9 Y P P h
<br />100-NEAR HWL: 924.84 g impermeable liner. A compacted clay liner that does not allow washout liquids to enter ground water is considered an impermeable N
<br />I / liner. The liquid and solid wastes must not contact the ground, and there must not be runoff from the concrete washout operations or L
<br />areas. Liquid and solid wastes must be disposed of properly and in compliance with MPCA regulations. A sign must be installed O =
<br />adjacent to each washout facility to inform concrete equipment operators to utilize theporoper facilities. C
<br />WETLAND 3 24. Upon completion of the project and stabilization of all graded areas, all temporary erosion control1 'a
<br />INCIDENTAL WETLAND PERT II II I facilities (silt fences, hay bales, etc.) shall be removed from the site. J Q
<br />RCWD REVIEW FILE 20-010RI 1 I - - �2r , / III 1 25. All t sedimentation basins must be restored to their design condition immediate) \ \ I I � permanent se amen tin can y .1
<br />p \ I I I I following stabilization of the site. 1 922
<br />\ \ \ \ \\ \ I I I __--90' //� .III I
<br />26. Contractor shall submit Notice of Termination for MPCA-NPDES permit within 30 days after NORTH GRADING AND
<br />Final Stabilization. EROSION
<br />CONTROL PLAN
<br />0 15 30 60
<br />
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