01/09/2008 P&Z Packet - Laserfiche WebLink

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VA UGHAN'S 1ST ADDITION GRADING, DRAINAGE, AND EROSION CONTROL PLAN 0 30 60 SCALE IN ,IN ASA LOT ASA ASA ,1a I NOTE: AU.413ISTURBANCE WITHIN .e. THE WETLAND BUFFER AREA _ SHALL BE RESTORED WITH NATIVE VEGETATION. 5U6O0PLAINs, 1 ' iItL = 200 CY _� —884- - wL� \\ m.2" Z —A`' ae1 Ordinary High Water Elevation: 883.7 ,(100 -YEAR HIGH WATER ELEVATION) RCWD Flaodplain Elevation: 887.6 / Edgg Of Wetland As Delineated By Wenck Associates On October 23, '2007 COMPENSATORY, \ { >� STORAGE = 204 CY''`AN 76.5 —ft We>land Huffer ■ ■ !JLJTLOTA Total Lot Area: 147,236 sq. ft. Total Impervious Area: 2,964 sq. ft. Impervious Surface Coverage: 2.O1% Upland Lot Area: 20,127 sq. ft. Upland Impervious Area: 2,527 eq. ft. Upland Impervious Coverage: 12.55% NOTE ALL ROOF,IDRAINS FOR PROPOSED HOUSE SHALL BE WRECTED INTO THE INFILTRATION BASIN. Shore Impact Zone Area 32,226 sq. ft. Grading Area Within Zone: 8,849 eq. ft. (27.5%) GRADING NOTES7 50— f t Setback from OHWL k • pr 41 'OCK.CONSiRUCTIQN ENTRANCE THE EXISTING WELL SHALL BE REMOVED IN ACCORDANCE VATH ALL FEDERAL, STATE, AND LOCAL REQUIREMENTS. PROPOSED CONTOURS REPRESENT FINISHED SURFACE ELEVATIONS. SPOT ELEVATIONS ALONG EXISTING CURB DENOTE TOP OF CURB. EXISTING UTIUTIES SHOWN ON THESE PLANS ARE BASED ON RECORD DRAWINGS AND, WHERE POSSIBLE. MEASUREMENTS TAKEN IN THE FIELD. THE INFORMATION IS NOT TO BE RELIED ON AS BEING EXACT OR COMPLETE. CONTRACTOR SHALL CONTACT THE APPROPRIATE UTILITY COMPANIES AT LEAST 48 HOURS PRIOR TO EXCAVATION, TO REQUEST EXACT FIELD LOCATION OF UTILITIES. THE CONTRACTOR IS RESPONSIBLE FOR RELOCATING ALL EXISTING UTIUIIES WHICH CONFUCT WITH THE PROPOSED IMPROVEMENTS SHOWN ON THE PLANS. CONTRACTOR TO CALL GOPHER STATE ONE CALL (1- 800 -252 - 1166) 48 HOURS PRIOR TO EXCAVATION FOR LOCATIONS OF UTILITIES. CONTRACTOR REQUIRED TO PROTECT THE TREES TO BE SAVED. SHOULD ANY PORTION OF THE TREE BRANCHES REQUIRE REMOVAL TO PERMIT OPERATION OF THE CONTRACTOR'S EQUIPMENT, THE CONTRACTOR SHALL OBTAIN THE SERVICES OF A PROFESSIONAL TRIMMING SERVICE TO TRIM THE TREES. SHOULD THE CONTRACTOR'S OPERATIONS RESULT IN THE BREAKING OF ANY UMBS, THE BROKEN UMBS SHOULD BE REMOVED IMMEDIATELY AND CUTS SHALL BE PROPERLY PROTECTED TO MINIMIZE ANY LASTING DAMAGE. NO TREES SHALL BE REMOVED WITHOUT AUTHORIZATION BY THE ENGINEER. COSTS FOR TRIMMING SERVICES SHALL BE CONSIDERED INCIDENTAL TO THE GRADING CONTRACT. CONTRACTOR SHALL STRIP, STOCKPILE AND RE- SPREAD SUFFICIENT TOPSOIL TO PROVIDE A MINIMUM FOUR INCH DEPTH TO ALL DISTURBED AREAS TO BE SODDED OR SEEDED. THE PROPOSED GRADING PLAN INDICATES FINAL GRADING AFTER THE HOUSES ARE CONSTRUCTED. THE CONTRACTOR SHALL APPLY A HOLDDOWN OF 2.25' ACROSS THE BUILD PAD LOCATIONS DURING THE GENERAL GRADING OF THE SITE THE FINISHED BUILDING SUBGRADE ELEVATION SHALL NOT VARY BY MORE THAN 0.10 FEET ABOVE OR BELOW THE PROPOSED ELEVATION. STREET OR PARKING AREA SUBGRADE ELEVATION SHALL NOT VARY BY MORE THAN 0.05 FEET ABOVE OR BELOW THE PRESCRIBED ELEVATION. AREAS TO RECEIVE TOPSOIL SHALL BE GRADED TO WITHIN 0.10 FEET OF THE REQUIRED ELEVATION UNLESS DIRECTED OTHERWISE BY THE ENGINEER. TOPSOIL SHALL BE GRADED TO WITHIN 14 INCH OF THE SPECIFIED THICKNESS. THE CONTRACTOR SHALL COMPLY VAN THE REQUIREMENTS OF THE MINNESOTA POLLUTION CONTROL AGENCY - NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT. CONTRACTOR SHALL BE A CO- APPLICANT WITH THE OWNER. THE CONTRACTOR SHALL COMPLETE THE REQUIRED INSPECTION REPORTS AND BE RESPONSIBLE FOR MAINTENANCE OF THE EROSION CONTROL DEVICES IN ACCORDANCE WITH THE NPDES PERMIT AND THE SWPPP FOR THIS PROJECT. RUFFED GROUSE ROAD - EROSION CONTROL NO 1 ES INLET PROTECTION SHALL BE INSTALLED AT THE CATCH BASINS ON RIFFED GROUSE ROAD THAT ARE NEAREST TO THE CUL -DE -SAC f THE CONTRACTOR SHALL ASSUME COMPLETE RESPONSIBIUTI FOR CONTROLLING ALL SILTATION AND EROSION OF THE PROJECT AREA. ALL EROSION CONTROL AND SILTATION CONTROL MEASURES SHALL COMPLY WITH MINNESOTA'S BEST MANAGEMENT PRACTICES MANUAL THE CONTRACTOR SHALL USE WHATEVER MEANS NECESSARY TO CONTROL EROSION AND SILTATION INCLUDING, BUT NOT UNITED 1O, STAKED STRAW BALES, ROCK ENTRANCES AND /OR SILT FENCES. CONTROL SHALL COMMENCE WITH GRADING AND CONTINUE THROUGHOUT THE PROJECT UNTIL ACCEPTANCE OF WORK BY THE OWNER. THE CONTRACTOR'S RESPONSIBILITY INCLUDES: ALL DESIGN AND IMPLEMENTATION AS REQUIRED TO PREVENT EROSION AND THE DEPOSITING OF SILT. THE OWNER MAY, AT HIS/HER OPTION, DIRECT THE CONTRACTOR IN HIS/HER METHODS AS DEEMED FIT TO PROTECT PROPERTY AND IMPROVEMENTS. ANY DEPOSITING OF SILT OR MUD ON NEW OR EXISTING PAVEMENT OR IN EXISTING STORM SEVERS OR SWALES SHALL BE REMOVED AFTER EACH RAIN AND AFFECTED AREAS CLEANED TO THE SATISFACTION OF THE OWNER, ALL AT THE EXPENSE OF THE CONTRACTOR. ALL EROSION CONTROL MEASURES MUST BE INSTALLED PRIOR TO COMMENCEMENT OF GRADING OPERATIONS AND BE MAINTAINED UNTIL AU. DISTURBED AREAS ON THE SITE HAVE BEEN RESTORED. TEMPORARY EROSION CONTROL TO BE PLACED AROUND STORM DRAIN STRUCTURES DURING CONSTRUCTION. SEDIMENT SHALL BE REMOVED FROM ALL SEDIMENT CONTROL DEVICES AS NECESSARY AND MUST BE REMOVED IF DESIGN CAPACITY HAS BEEN REDUCED BY FIFTY PERCENT. A STABIUZED CONSTRUCTION ENTRANCE SHALL BE INSTALLED AT THE BEGINNING OF CONSTRUCTION AND MAINTAINED FOR DURATION OF PROJECT. ALL SLOPES 3:1 OR STEEPER, NOT TO BE SODDED AND GREATER THAN EIGHT FEET IN HEIGHT, SHALL HAVE EROSION CONTROL FABRIC INSTALLED WHEN THE SITE GRADING CONSTRUCTION IS COMPLETED, THE CONTRACTOR SHALL SEED AND MULCH THOSE AREAS AS DIRECTED BY THE OWNER WITHIN 48 HOURS OF GRADING COMPLETION. THE SEEDING SHALL COMPLY WLTH MN/DOT SPECIFICATION NO. 3876, AT A RATE OF 50 LBS /ACRE THE SEEDED AREA SHALL BE MULCHED. THE MULCH SHALL APPLY WITH MN/DOT SPECIFICATION 3882, TYPE 1. THE MULCH SHALL BE APPUED AND ANCHORED IN ACCORDANCE WITH MN /DOT SPECIFICATION NO. 2575.3, F1. MULCH SHALL BE APPLIED AT THE RATE OF 2 TONS PER ACRE. THE MULCH SHALL BE ANCHORED WITH A DISC, CLODBUSTER OR OTHER APPROVED EQUIPMENT. ALL ADJACENT STREETS SHALL BE INSPECTED DAILY AND SWEPT CLEAN OF SEDIMENT TRACKED FROM THE SITE ,s. .6 Ju RECEIVED DEC 14 2007 CITY OF LINO LAKES 75— ft Shcre /mr"act Zone GRADING LEGEND SF - 1.3x EXISTING CONTOURS PROPOSED CONTOURS SILT FENCE DRIVEWAY SLOPE SOIL BORING 4)-.-1 45"f LOCATION MAP NOT 10 SCALE SECTIONS 27, & 28, TOWNSHIP 31, RANGE 22 ANOKA COUNTY, MINNESOTA. INFILTRATION NOTES A. WHEN THE SITE GRADING CONSTRUCTION IS COMPLETED, THE CONTRACTOR SHALL SEED AND MULCH THOSE AREAS AS DIRECTED BY THE OWNER WITHIN 48 HOURS OF GRADING COMPLETION. THE SEEDING SHALL COMPLY WITH MN /DOT SPECIFICATION N0. 3876 , AT A RATE OF 50 LBS /ACRE THE INFILTRATION BASIN BOTTOM SHALL BE SEEDED WITH NDOT SEEDING MIX 350. THE SEEDED AREA SHALL BE MULCHED. THE MULCH SHALL APPLY WITH MN/DOT SPECIFICATION 3882, TYPE 1. THE MULCH SHALL BE APPLIED AND ANCHORED IN ACCORDANCE WITH MN/DOT SPECIFICATION N0. 2575.3, F1. MULCH SHALL BE APPUED AT THE RATE OF 2 TONS PER ACRE. THE MULCH SHALL BE ANCHORED WITH A DISC, CLODBUSTER OR OTHER APPROVED EQUIPMENT. ALL FILTRATION AREAS SHALL BE KEPT OFFUNE UNTIL FINAL STABIUZATIDN IS COMPLETE B. THE INFILTRATION BASIN SHALL BE STAKED OFF AND MARKED. HEAVY EQUIPMENT SHALL BE KEPT OUT OF INFILTRATION AREAS TO PREVENT COMPACTION OF SOILS. C. THE INFILTRATION BASIN SHALL BE GRADED FIRST, AFTER THE EROSION CONTROL IS INSTALLED. THE CONTRACTOR SHALL TAKE ALL NECESSARY MEASURES TO ENSURE THE INFILTRATION CAPACITY IS MAINTAINED DURING CONSTRUCTION. D. THE INFILTRATION BASIN SHALL NOT BE EXCAVATED TO FINAL GRADE UNTL THE CONTRIBUTING DRAINAGE AREAS HAVE BEEN CONSTRUCTED AND FULLY STABILIZED. E. FINAL EXCAVATION OF THE INFILTRATION BASIN SHALL BE COMPLL ItU USING UGHT TRACKED EQUIPMENT TO AVOID COMPACTION OF THE BASIN FLOOR. F. TEMPORARY EROSION CONTROL BLANKETS ARE RECOMMENDED FOR USE IN THE INFILTRATION BASIN TO PREVENT SEED LOSS AND TRANSPORTATION. PFDECI 2003.001 DATE 12/14/07 SHEET r 5