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Item 3.2 Stillwild3601 Thurston Avenue Anoka, MN 55303 763.231.5840 TPC@PlanningCo.com 1 PLANNING REPORT TO: Otsego Planning Commission FROM: D. Daniel Licht REPORT DATE: 27 August 2025 120-DAY DATE: 16 December 2025 RE: Otsego – Stillwild; Conditional Use Permit/Preliminary Plat TPC FILE: 101.02 BACKGROUND Thomas and Ashley Smith acquired the 30.90 acre property at the terminus end of Kalland Avenue, south of 95th Street (CSAH 39) on 12 December 2024. The property owners have submitted a preliminary plat to subdivide the property into three lots. The proposed subdivision requires consideration of a Zoning Map amendment rezoning the property from A- 1, Agriculture Rural Service District to A-2, Long Range Urban Service District and a Conditional Use Permit to allow lots within the plat to be less than 20 acres in area and 450 feet in width. A public hearing to consider the applications has been noticed for the Planning Commission meeting on 15 September 2025 at 7:00PM. Exhibits: Site Location Map Preliminary Plat dated 08/01/2025 (2 sheets) Preliminary Plans dated 08/01/2025 (14 sheets) ANALYSIS Zoning. The subdividers have requested a Zoning Map amendment to change the zoning classification of the subject property from A-1 District to A-2 District to enable additional development rights allowed by the 2023 Comprehensive Plan. The Planning Commission and City Council evaluate such requests based on the criteria outlined in Section 11-3-2.F of the Zoning Ordinance: Item 3.2 2 1. The proposed action's consistency with the specific policies and provisions of the Otsego Comprehensive Plan. Comment: The 2023 Comprehensive Plan establishes a limited density of one dwelling unit per 10 acres allowance intended to provide opportunities for rural character development in areas not planned for sewer and water utilities. The subject property is allowed three development rights based on its area of 30.90 acres. A deed restriction will be required to be recorded with each proposed lot to prohibit further subdivision until allowed in accordance with the Comprehensive Plan and Zoning Ordinance. 2. The proposed use’s compatibility with present and future land uses of the area. Comment: The subject property abuts rural residential lots to the north, the Riverwood National Golf Course and subdivision to the west, and large agricultural parcels to the east and south. The proposed subdivision is consistent with the character of the area and will provide for compatible land uses. 3. The proposed use's conformity with all performance standards contained within the Zoning Ordinance and other provisions of the City Code. Comment: The proposed preliminary plat will conform to all applicable requirements of the Zoning Ordinance, Subdivision Ordinance, and Engineer Manual. 5. Traffic generation by the proposed use in relation to the capabilities of streets serving the property. Comment: The subject property is accessed from Kalland Avenue via 95th Street (CSAH 39), which is designated by the Comprehensive Plan as a minor arterial roadway. There is capacity on 95th Street (CSAH 39) to accommodate additional traffic created by the proposed subdivision and construction of three single family dwellings. 5. The proposed use can be accommodated by existing public services and facilities and will not overburden the City's service capacity. Comment: The proposed subdivision is within the scope of development guided by the 2023 Comprehensive Plan and will not have a negative impact to the City’s service capacity. Lot Requirements. Lots within the A-2 District must have a minimum area of 20 acres and minimum width of 450 feet. Section 11-52-5.H of the Zoning Ordinance allows for the creation of lots less than 20 acres in area and/or less than 450 feet in width within the A-2 District by Conditional Use Permit based on compliance with the following criteria: 3 1. All other applicable requirements of Section 11-52-6 of this Chapter are complied with. 2. A concept plan utilizing all development rights allowed by Section 11-52- 6.B of this Chapter is submitted and recorded with the subdivision. 3. Lots are to be clustered and the overall subdivision designed in such a manner so as to provide for logical future street and utility extensions. 4. No lot shall be less than one (1) acre in size or 150 feet in width. 5. The maximum lot size for clustered lots in the Urban Service Reserve Area shall be two and one-half (2.5) acres except if one of the following conditions is met: a. Topography, soils, wetlands, or other natural features dictate a larger minimum lot area. b. The location of existing buildings cannot be fully accommodated in compliance with applicable setback requirements of Section 20- 52-6.C of this Chapter. c. One (1) development right as allowed by Section 11-52-6.B of this Chapter is used for a dwelling located on the present parcel outside of the residential cluster. 6. A resubdivision plan for future division of each lot with availability of municipal sanitary sewer service is submitted and recorded on the deed for each lot. Principal and accessory buildings shall be located on each lot in conformance with all present and future setback requirements based on the resubdivision plan. 7. A deed restriction is placed on the parcel exercising development rights and all subdivided lots to prohibit additional subdivision unless is conforms to applicable zoning district requirements. 8. Each lot is capable of accommodating a private well and septic system. The proposed lots range in area from 3.78 acres to 21.30 acres in area. All three lots comply with the minimum 150 foot width requirement. 4 Lots 1 and 2, Block 1 are more than 2.5 acres in area and less than 10 acres in area due to the depth of the existing parcels to the north, the location at which Kalland Avenue terminates at the north line of the subject property, and extensive wetlands and topography changes within the subject property. The area of Lots 1 and 2, Block 1 satisfy the intent of the conditions for allowing lots between 2.5 acres and 10.0 acres in area. The preliminary plat illustrates the potential for extension of future public streets from the terminus end of Kalland Avenue to the east and south plat lines. The potential rights-of-way are entirely within the boundaries of Lot 3, Block 1. Dedication of right-of-way and construction of public streets would only be expected to occur if 1) sewer and water utilities are available at the east or south plat lines and 2) the owner of Lot 3, Block 1 chooses to subdivide. Setbacks. The table below provides the required setbacks applicable to the proposed preliminary plat established in Section 11-52-6.C of the Zoning Ordinance. The setbacks are illustrated on the preliminary plat with potential principal building locations identified to comply with the minimum setbacks required by the Zoning Ordinance. Kalland Ave. Side Rear Wetland 65ft. 35ft. 10ft. 40 ft. 20ft. 35ft. 10ft. 10ft. Kalland Avenue. Access to the subject property is from 95th Street (CSAH 39) via Kalland Avenue, which terminates at the north plat line. Kalland Avenue is a rural section gravel roadway that dead-ends approximately 2,100 feet south of 95th Street (CSAH 39). The cul-de- sac at the end of Kalland Avenue does not comply with the diameter and its existing length exceeds the 500 foot limit for permanent cul-de-sacs required by Section 10-8-5.C of the Subdivision Ordinance. The proposed subdivision involves extension of Kalland Avenue approximately 230 feet and construction of a properly dimensioned cul-de-sac to provide access to the proposed lots. The new section and cul-de-sac of Kalland Avenue will remain a rural section with gravel surface consistent with the existing roadway. The preliminary plat illustrates potential future subdivision of Lot 3, Block 1 to allow removal of the cul-de-sac to provide for through streets. Section 8-8-4 of the City Code specifies installation of street lighting for new subdivisions at the corners of intersecting streets, midblock locations for blocks longer than 900, and the terminus of cul-de-sac streets. A street light will be required to be installed at the terminus end of Kalland Avenue subject to review and approval of the City Engineer. Construction plans for Kalland Avenue are to be subject to review and approval of the City Engineer. 5 Landscaping. Section 11-19-2.B of the Zoning Ordinance requires installation of two shade trees per lot. The builder for the house on each lot will install the required landscaping. A security for the landscaping will be collected at the time of building permit for each lot. Utilities. The subject property is within Urban Service Expansion Area W2. Sewer and water utilities are not available to this area. The proposed lots are to be served by individual on-site septic systems and wells. The preliminary plat identifies a primary and secondary septic drain field site for each of the proposed lots. The on-site utilities will subject to review and approval by the Building Official at time a building permit is requested. Stormwater. The subdivider has submitted grading and drainage plan and stormwater calculations for the proposed preliminary plat and final plat. Wetlands within the property are to be protected by drainage and utility easements that include the 20 foot buffer zone required by Section 11-16-5.F of the Zoning Ordinance. All grading, drainage, and erosion control plans are subject to review and approval by the City Engineer. Easements. Section 10-8-12 of the Subdivision Ordinance requires 10 foot wide drainage and utility easements at the perimeter of the proposed lot. As noted above, drainage and utility easements are also to be dedicated over required stormwater basins, wetlands, and wetland buffers. All easements are to be subject to review and approval by the City Engineer. Park and Trail Dedication. The proposed subdivision is subject to park dedication requirements outlined in Section 10-8-15 of the Subdivision Ordinance. The Parks System Master Plan does not identify acquisition of land from the subject property for City parks. City staff recommends that park dedication requirements for proposed the subdivision be satisfied by payment of a cash fee in lieu of land. Development Contact. Section 10-10-4.A of the Subdivision Ordinance requires that the developer enter into a development contract with the City to provide for construction of public improvements, establishment of required securities, and payment of applicable fees. The development contract will be drafted by the City Attorney for approval by resolution of the City Council. RECOMMENDATION The proposed Stillwild preliminary plat is consistent with the policies of the Comprehensive Plan and complies with the Zoning Ordinance and Subdivision Ordinance. City staff recommends approval of the applications as set forth below. 6 POSSIBLE ACTIONS A. Motion to recommend approval of a Zoning Map amendment, Conditional Use Permit, and preliminary plat for Stillwild, subject to the following conditions: 1. A deed restriction shall be recorded with each lot prohibiting further subdivision except as allowed by the Comprehensive Plan and Zoning Ordinance. 2. Development of Lots 1-3, Block 1 shall be subject to the following setback requirements: Kalland Ave. Side Rear Wetland 65ft. 35ft. 10ft. 40 ft. 20ft. 35ft. 10ft. 10ft. 3. Design and construction plans for Kalland Avenue, including street lighting, shall be subject to review and approval of the City Engineer. 4. Two shade trees shall be planted on each lot at the time when a single family dwelling is constructed. 5. All grading, drainage, wetland, erosion control, and stormwater management plans shall be subject to review and approval of the City Engineer. 6. All utility issues shall be subject to review and approval of the City Engineer and Building Official. 7. All drainage and utility easements shall be subject to review and approval by the City Engineer. 8. Park dedication requirements shall be satisfied as a cash fee in lieu of land to be paid prior to recording of the final plat. 9. The subdivider shall execute a development contract as drafted by the City Attorney and approved by resolution of the City Council. B. Motion to recommend the application be denied based on a finding that the request is inconsistent with the Comprehensive Plan and does not comply with the requirements of the Zoning Ordinance and Subdivision Ordinance. C. Motion to table. 7 c. Adam Flaherty, City Administrator/Finance Director Audra Etzel, City Clerk Ron Wagner, City Engineer David Kendall, City Attorney Property Location Stillwild Plat 921 ft Overview Legend Highways Interstate State Hwy US Hwy Roads City/Township Limits c t Parcels Torrens DATE SHEET SHEETS REVISIONS BOOK PAGE DRAWN BY FILE NO.OF 708 1st Avenue NE, #1 Ph. 763.682.1781 www.meyerrohlin.com Buffalo, MN 55313 08/01/2025 24228 1 2 409 9AAN PRELIMINARY PLAT THE STILLWILD OF Meyer-Rohlin LEGENDMATCH L INE (SEE INSET)MATCH L INE INSET SHEET 1 OF 2 SHEETS detail SE E D E T A I L CERTIFICATE OF SURVEY EXISTING CONDITIONS & N:\Carlson Projects\24228 - LaVoi Subdivision\Proj Dwg\24228 Preliminary Plat Sheet 1.dwg DATE SHEET SHEETS REVISIONS BOOK PAGE DRAWN BY FILE NO.OF 708 1st Avenue NE, #1 Ph. 763.682.1781 www.meyerrohlin.com Buffalo, MN 55313 08/01/2025 24228 2 2 409 9AAN PRELIMINARY PLAT THE STILLWILD OF Meyer-Rohlin SHEET 2 OF 2 SHEETS LEGEND N:\Carlson Projects\24228 - LaVoi Subdivision\Proj Dwg\24228 Preliminary Plat Sheet 2.dwg © 2025 Microsoft Corporation © 2025 Maxar ©CNES (2025) Distribution Airbus DS 123#REVISION NOTEDATEI HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECT SUPERVISION AND THAT I AM ADULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATEOF MINNESOTA.CHRISTOPHER L. SONMORLIC. NO.DATESHEETREVISIONS4459908/01/2025THE STILLWILDOTSEGO, MINNESOTAPRELIMINARY NOT FOR CONSTRUCTION TITLE SHEETC0 PROJECT LOCATION LOCATION MAP NOT TO SCALE SHEET INDEX C0 TITLE SHEET C1 TYPICAL SECTION & OUTLET CONTROL STRUCTURE DETAILS C2 GRADING PLAN C3 EROSION & SEDIMENT CONTROL PLAN C4 STORM WATER POLLUTION PREVENTION PLAN (SWPPP) MnDOT STANDARD PLANS - TEMPORARY EROSION CONTROL 2 of 8 FILTER BERMS, SEDIMENT CONTROL LOGS & BALE BARRIERS 3 of 8 DITCH CHECKS 4 of 8 STORM DRAIN INLET PROTECTION 5 of 8 STABILIZED CONSTRUCTION EXIT 6 of 8 SILT FENCE 8 OF 8 CULVERT END CONTROLS MnDOT STANDARD PLANS - PERMANENT EROSION CONTROL 1 of 3 ALONG DITCHES, ROADWAYS & FLUMES 2 of 3 TURF ESTABLISHMENT DETAIL AT CULVERT ENDS 3 of 2 BLANKET STAPLE PATTERN FOR SLOPES PROJECT CONTACTS OWNER TOMMY & ASHLEY SMITH - OWNER OTSEGO, MN 56442 tssinbin@aol.com (320) 333-7892 ENGINEER CHRISTOPHER L. SONMOR, PE SONMOR CONSULTING, LLC 967 GULL MEADOWS LANE EAST GULL LAKE, MN 56401 chris@sonmorconsulting.com (952) 270-8394 (M) GOPHER STATE ONE CALL 811 | (651) 454-0002 | (800) 252-1166 qa@gopherstateonecall.org THE CONTRACTOR IS RESPONSIBLE FOR CONTACTING GOPHER STATE ONE CALL FOR UTILITY LOCATES. THE CONTRACTOR SHALL CONTACT GOPHER STATE ONE CALL IN ADVANCE OF ANY GRADING OR EXCAVATION AS REQUIRED BY STATE STATUTE. THE CONTRACTOR, AT NO COST TO THE OWNER, SHALL BE RESPONSIBLE FOR ANY REQUIRED UTILITY REPAIRS RESULTING FROM THEIR WORK. OTSEGO, MINNESOTA THE STILLWILD TOMMY & ASHLEY SMITH PRELIMINARY PLANS CSAH 39 RIVERWOOD NATIONAL GOLF COURSE KAHLER AVEKADLER AVELABEAUX AVEMISSISSIPPI RIVER GENERAL NOTES 1.WORK TO BE COMPLETED IN ACCORDANCE WITH MnDOT STANDARD SPECIFICATIONS FOR CONSTRUCTION (CURRENT EDITION) & THE CURRENT CITY OF OTSEGO DESIGN MANUAL INCLUDING ALL STANDARD PLATES & SPECIFICATIONS. 2.THE SUBSURFACE UTILITY INFORMATION IN THIS PLAN IS UTILITY LEVEL D. THIS UTILITY QUALITY LEVEL WAS DETERMINED ACCORDING TO GUIDELINES OF CI/ASCE 38-02, ENTITLED "STANDARD GUIDELINES FOR THE COLLECTION & DEPICTION OF EXISTING SUBSURFACE UTILITY DATA." 3.TOPOGRAPHIC SURVEY WAS COMPLETED BY MEYER-ROHLIN LAND SERVICES. 4.CONTRACTOR IS RESPONSIBLE FOR GOPHER STATE ONE CALL PRIOR TO BEGINNING ANY REMOVALS, GRADING OR EXCAVATION. 5.CONTRACTOR TO CONTACT OWNER FOR PRIVATE UTILITY LOCATES IF NEEDED. DEMOLITION NOTES 1.THE CONTRACTOR SHALL PROTECT ALL EXITING UTILITIES, PAVEMENT, LANDSCAPING, AND ADJACENT PROPERTY NOT INDICATED FOR REMOVAL. 2.WHERE APPLICABLE, REMOVE ALL PAVEMENTS, CURBS & WALKS TO NEAREST JOINT OR CRACK FURTHER THAN INDICATED ON THE PLAN. GRADING NOTES 1.ALL EROSION CONTROL DEVICES ARE TO BE INSTALLED PRIOR TO BEGINNING DEMOLITION OR GRADING OPERATIONS. 2.ALL SPOT ELEVATIONS ARE TO FINISHED GROUND (BITUMINOUS, CONRETE, GRAVEL, EOF, ETC.) UNLESS NOTED. SPOT ELEVATIONS ON CURB LINES ARE ARE TO FLOW LINE UNLESS NOTED. 3.EXISTING TOPSOIL SHALL BE STRIPPED WITHIN THE PROJECT GRADING LIMITS AND STOCKPILED ON SITE. GRADING OPERATIONS SHALL BE LIMITED TO THE AREAS SHOWN ON THE PLANS. STABILIZE STOCKPILES PER THE SWPPP. 4.IF UNSUITABLE SOILS ARE DISCOVERED ON SITE, THE CONTRACTOR SHALL IMMEDIATELY NOTIFY THE OWNER. 5.COMPACT SOILS PER CITY OF OTSEGO SPECIFICATIONS FOR STREET CONSTRUCTION SECTION 1.04. 6.NOTIFY THE OWNER OF EARTHWORK DISCREPANCIES. 7.AGGREGATE BASE CLASS 5 SHALL MEET MNDOT SPECIFICATION 3138. EROSION CONTROL NOTES 1.RESTORE ALL DISTURBED ARES USING THE FOLLOWING SEED MIXTURES: A)TEMORARY SEEDING (AS NEEDED) - MIXTURE 21-111 B)FINAL SEEDING - MIXTURE 25-141 (GENERAL ROADSIDE MIX @ 59LBS/AC) C)STORMWATER BASIN - MIXTURE 33-261 2. COMMERCIAL FERTILIZER SHALL BE INACCORDANCE WITH THE PROVISION OF MnDOT 3881 AND SHALL BE A MINIMUM ANALYSIS OF 20-10-10 AND APPLIED AT A RATE OF 500 LBS/AC. 3. ARMOR POND EMERGENCY OVERFLOW WITH CLASS 2 RIPRAP AND GEOTEXTILE FABRIC. 4. SEE SWPPP ON SHEET C4 FOR ADDITIONAL NOTES FOR STORMWATER MANAGEMENT & EROSION CONTROL. R/WCL 4:1 R/W 14.0'2.0'10.0'6.0' 30.0' EXISTING GROUND 4:1 6" AGGREGATE BASE CLASS 5 SCARIFY AND RE-COMPACT SUBGRADE 14.0'2.0'10.0'6.0' 30.0' 28.0' 2.0%2.0% TYPICAL SECTION - KAHLER AVENUE NE 1"=4' (PLOTTED ON 22X34) 3.0'1.5'4:14:1 4:1 4:1 3.0'VARIES VARIES 123#REVISION NOTEDATEI HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECT SUPERVISION AND THAT I AM ADULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATEOF MINNESOTA.CHRISTOPHER L. SONMORLIC. NO.DATESHEETREVISIONS4459908/01/2025THE STILLWILDOTSEGO, MINNESOTAPRELIMINARY NOT FOR CONSTRUCTION TYPICAL SECTION & OCS DETAILC1 OUTLET CONTROL STRUCTURE DETAIL 1"=2' (PLOTTED ON 22X34) ELEV. = 933.0' ELEV. = 931.75' ELEV. = 930.5' 23 LF - 12" RCP @ 0.00% 28 LF - 12" RCP @ 1.0% ELEV. = 932.0' ELEV. = 928.5' ELEV. = 930.95' ELEV. = 929.25'4" DIA. ORIFICE6" DIA. ORIFICE6" CONCRETE WEIR WALL INTEGRAL CONCRETE BASE GRATE PER OTSEGO STANDARD PLATE NO. 407 WEIR WALL ELEV. = 930.5' ELEV. = 930.95' 4.0' ELEV. = 931.75' ELEV. = 928.5' 4" DIA. 6" DIA. 962948950952954956958960 936 938 940 942 944 946 934 93 0 93 2 928 928930932934 944942940936 938950 948946 956 954 952 960 958 9 2 0 918 954 952 950 948 946 944 942 922 924 926 92 0 9 1 8920922924926928 936 93 2 934 936 9429409 3 693815" CMP INV. ELEV. = 1233.3' 15" CMP 15" CMP CULVERT INV. ELEV. = 1231.3' 15" CMP1+002+003+004+005+006+006+78931 931 932 932 933 933 928 929 930 9 3 6 937938926927928929930931932933934926927928929930931932933935936932933934935936123#REVISION NOTEDATEI HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECT SUPERVISION AND THAT I AM ADULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATEOF MINNESOTA.CHRISTOPHER L. SONMORLIC. NO.DATESHEETREVISIONS4459908/01/2025THE STILLWILDOTSEGO, MINNESOTAPRELIMINARY NOT FOR CONSTRUCTION GRADING PLANC2 WETLAND BUFFER KAHLER AVEEXISTING WETLAND EXISTING WETLAND EXISTING WETLAND DS 101 DS 100 DS 201DS 200 DS 300 DS 301 DS 400 DS 401 (OCS) DS 402 60. 0 ' R60.0'R60.0 ' R250' R52.0' GRADING LIMITS GRADING LIMITS GRADING LIMITS 9,384 SF WETLAND FILL WET SEDIMENTATION BASIN NWL = 930.50' 100-YR HWL = 931.74 POTENTIAL HOME LOCATION POTENTI A L HOME LOCATIO N GRADING LIMITS 20.0'20.0 '2.0%2.25%SCALE IN FEET 0 6030 NORTH 962948950952954956958960 936 938 940 942 944 946 934 93 0 93 2 928 928930932934 944942940936 938950 948946 956 954 952 960 958 9 2 0 918 954 952 950 948 946 944 942 922 924 926 92 0 9 1 8920922924926928 936 93 2 934 936 9429409 3 693815" CMP INV. ELEV. = 1233.3' 15" CMP 15" CMP CULVERT INV. ELEV. = 1231.3' 15" CMP1+002+003+004+005+006+006+78931 931 932 932 933 933 928 929 930 9 3 6 937938926927928929930931932933934926927928929930931932933935936932933934935936123#REVISION NOTEDATEI HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECT SUPERVISION AND THAT I AM ADULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATEOF MINNESOTA.CHRISTOPHER L. SONMORLIC. NO.DATESHEETREVISIONS4459908/01/2025THE STILLWILDOTSEGO, MINNESOTAPRELIMINARY NOT FOR CONSTRUCTION EROSION & SEDIMENT CONTROL PLANC3 WETLAND BUFFER KAHLER AVEEXISTING WETLAND EXISTING WETLAND EXISTING WETLAND WETLAND BUFFER BIOROLL DITCH CHECK (TYP.) FES INLET PROTECTION (TYP.)20.0'565 LF - SILT FENCE TYPE MS (DOUBLE ROW) 100 LF - SILT FENCE TYPE MS 85 LF - SILT FENCE TYPE MS (DOUBLE ROW) 140 LF - SILT FENCE TYPE MS 242 LF - SILT FENCE TYPE MS 133 LF - SILT FENCE TYPE MS CONSTRUCTION EXIT SCALE IN FEET 0 6030 NORTH 123#REVISION NOTEDATEI HEREBY CERTIFY THAT THIS PLAN, SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECT SUPERVISION AND THAT I AM ADULY LICENSED PROFESSIONAL ENGINEER UNDER THE LAWS OF THE STATEOF MINNESOTA.CHRISTOPHER L. SONMORLIC. NO.DATESHEETREVISIONS4459908/01/2025THE STILLWILDOTSEGO, MINNESOTAPRELIMINARY NOT FOR CONSTRUCTION SWPPPC4 1.GENERAL INFORMATION A.PROJECT DESCRTIPTION & LOCATION A.1.THE PROJECT IS LOCATED IN OTSEGO, MINNESOTA (WRIGHT COUNTY PID 118-800-144300). A.2.THE OWNERS ARE SUBDIVIDING THE SUBJECT PROPERTY INTO THREE SINGLE FAMILY LOTS. A.2.1.LOT 1 - 5.5-ACRES A.2.2.LOT 2 - 21.2-ACRES A.2.3.LOT 3 - 3.8-ACRES A.3.THE PROJECT INCLUDES THE EXTENSION OF KAHLER AVENUE NE APPROXIMATELY 200-FEET TO A NEW PAVED CUL-DE-SAC. THE TYPICAL SECTION INCLUDES A 28-FOOT GRAVEL ROADWAY WITH THE POTENTIAL TO BE PAVED TO CITY STANDARD UPON FURTHER EXTENSION OF KAHLER AVENUE NE. A.4.CONSTRUCTION IS SCHEDULED TO BEGIN IN THE SUMMER OF 2025. A.5.THE CONTRACTOR (CO-PERMITTEE) SHALL AMEND THIS DOCUMENT FOR ANY CHANGES MADE TO THE SWPPP AND/OR EROSION CONTROL PLANS. THE AMENDED DOCUMENT MUST BE MAINTAINED AND RETAINED ON SITE WITH THE PERMIT DOCUMENTATION. B.PERMITTEE & CO-PERMITTEE B.1.THE CONTRACTOR SHALL BE THE CO-PERMITTEE WITH THE OWNER ON THE NPDES CONSTRUCTION STORMWATER PERMIT APPLICATION. OWNER TOMMY & ASHLEY SMITH (320) 333-7892 tssinbin@aol.com CONTRACTOR TO BE DETERMINED C.SWPPP CERTIFICATIONS SWPPP DESIGNER CHRISTOPHER L. SONMOR SONMOR CONSULTING, LLC CERTIFICATION EXPIRES: 2027 SWPPP INSTALLER/SITE MANAGER TO BE DETERMINED D.IMPERVIOUS AREA CALCULATIONS TOTAL DISTURBED AREA:1.82-ACRES EXISTING IMPERVIOUS AREA:0.00-ACRES PROPOSED IMPERVIOUS AREA:0.32-ACRES TOTAL CHANGE IN IMPERVIOUS AREA:0.32-ACRES (INCREASE) 2. RECEIVING WATERS A.THE RECEIVING WATER ARE A SERIES OF NATURAL DRAINAGE WAYS AND WETLANDS SOUTH AND EAST OF THE PROJECT AREA. 3. PROJECT PLANS & SPECIFICATIONS A.THE STILLWILD PRELIMINARY PLANS & DRAINAGE REPORT TOGETHER WITH THIS DOCUMENT MAKE UP THE COMPLETE SWPPP. B.EROSION & SEDIMENT CONTROL PLANS & DETAILS ARE INCLUDED IN THE CONSTRUCTION PLANS. C.REFER TO THE DRAINAGE REPORT FOR ALL PERMANENT STORMWATER BMP MODEL RESULTS AND CALCULATIONS. 4. EROSION PREVENTION & SEDIMENT CONTROL PRACTICES A.PRIOR TO BEGINNING GRADING OPERATIONS, THE CONTRACTOR SHALL INSTALL ALL TEMPORARY EROSION & SEDIMENT CONTROL DEVICES AS INDICATED IN THE CONSTRUCTION PLANS. B.ALL DISTURBED SOILS NOT ACTIVELY WORKED FOR A PERIOD OF 7 DAYS SHALL BE STABILIZED. STABILIZATION INCLUDES, BUT IS NOT LIMITED TO TEMPORARY SEED/MULCH, HYRAULIC MULCH & EROSION CONTROL BLANKET. C.CONTRACTOR SHALL MINIMIZE CONSTRUCTION ACTIVITY IN AREAS PROPOSED FOR INFILTRATION. D.GRADING OPERATIONS SHALL BE PHASED AND SEQUENCED TO MINIMIZE DISTURBED AREA AND DURATION OF EXPOSED SOILS. E.WHEN POSSIBLE, ROUTE STORMWATER RUNOFF THROUGH VEGETATED AREAS. F.USE PERIMETER SILT FENCE AROUND TOPSOIL STOCKPILES. TEMPORARY SEED OR STABILIZE STOCKPILES. G.DISCHARGE OF TURBID OR SEDIMENT-LADEN WATERS (IF APPLICABLE) FROM DEWATERING OPERATIONS SHALL BE ROUTED THROUGH A SEDIMENT CONTROL DEVICE (SEDIMENT TRAP, BASIN OR FILTER BAG) OR A TEMPORARY SEDIMENTATION BASIN PRIOR TO DISCHARGE TO A SURFACE WATER. WHEN POSSIBLE, USE A WELL-VEGETATED AREA TO INFILTRATE AND TREAT WATER PRIOR TO DISCHARGE. H.IF NUISANCE CONDITIONS RESULT FROM THE THE DISCHARGE, THE PERMITTEE SHALL CEASE DEWATERING OPERATIONS IMMEDIATELY AND CORRECTIVE ACTION MUST OCCUR BEFORE DEWATERING IS RESUMED. I.ANY DEWATERING DISCHARGE THAT CONTAINS OIL OR GREASE SHALL BE ROUTED THROUGH A OIL-WATER SEPARATOR OR FILTRATION DEVICE. J.DISCHARGE FROM DEWATERING OPERATIONS MUST BE PERFORMED IN A MANNER THAT DOES NOT CAUSE EROSION OR SCOURING AT THE DISCHARGE POINT. K.ANTICIPATED EROSION & SEDIMENT CONTROL DEVICES & INSTALLATION SEQUENCING IS AS FOLLOWS: K.1.CONSTRUCTION EXIT (LS) - PRIOR TO BEGINNING GRADING OPERATIONS K.2.SILT FENCE (LF) - PRIOR TO BEGINNING GRADING OPERATIONS K.3.RIPRAP/ARMOR AT OUTFALLS (CY) - AT TIME OF FES INSTALLATION K.4.TEMPORARY SEEDING (AC) - AS NEEDED DURING GRADING OPERATIONS K.5.EROSION CONTROL BLANKET (SY) - INSTALL AT TIME OF FINAL TURF ESTABLISHMENT K.6.BIOROLL (EA) - INSTALL IN DITCHES AT TIME OF FINAL TURF ESTABLISHMENT K.7.PERMANENT SEEDING (AC) - FINAL TURF ESTABLISHMENT L.IF CONSTRUCTION EXIT IS OBSERVED TO BE FULL OF SEDIMENT OR SEDIMENT IS BEING TRACKED ONTO PUBLIC STREETS, THE CONSTRUCTION EXIT SHALL BE IMMEDIATELY REPLACED OR REPAIRED. THE CONTRACTOR SHALL SWEEP OR REMOVE ANY SEDIMENT TRACKED ONTO PUBLIC ROADWAYS WITHIN 24 HOURS. M.WHEN/IF INLET PROTECTION DEVICES BECOME CLOGGED OR ARE FULL TO 1/3 OF THEIR DESIGNED CAPACITY, CLEAN OR REPLACE THE DEVICE WITHIN 24 HOURS OF OBSERVATION OF THE DEVICE BEING CLOGGED. N.IF SEDIMENT IS OBSERVED AT PIPE OUTFALLS, THE SEDIMENT SHALL BE REMOVED WITHIN 24 HOURS. THE SOURCE OF THE SEDIMENT SHALL BE IDENTIFIED AND CORRECTED. 5. PERMANENT STORMWATER MANAGEMENT SYSTEM A.STORMWATER RUNOFF IS MANAGED ON-SITE WITH A WET SEDIMENTATION BASIN. 6. INSPECTION & MAINTENANCE ACTIVITIES A.THE CONTRACTOR SHALL PROVIDE A CERTIFIED EROSION CONTROL SUPERVISOR FOR THE PROJECT. B.THE EROSION CONTROL SUPERVISOR SHALL BE TRAINED TO OVERSEE THE IMPLEMENTATION OF THE SWPPP AND MANAGEMENT OF ALL EROSION PREVENTION & SEDIMENT CONTROL PRACTICES FOR THE DURATION OF THE PROJECT. C.THE EROSION CONTROL SUPERVISOR SHALL PERFORM ROUTINE INSPECTIONS EVERY 7 DAYS OR FOLLOWING A RAIN EVENT OF 1/2-INCH OR GREATER IN 24 HOURS. D.ALL INSPECTION LOGS SHALL BE KEPT ON SITE WITH THE NPDES PERMIT DOCUMENTATION. 7. POLLUTION PREVENTION MANAGEMENT MEASURES A.THE CONTRACTOR SHALL HAVE A SPILL CONTAINMENT PLAN IN PLACE IN THE EVENT OF A SPILL. B.DISPOSAL BINS SHALL BE AVAILABLE ON SITE FOR COLLECTION OF SOLID WASTE. ALL SOLID WASTE SHALL BE DISPOSED OF IN ACCORDANCE WITH MPCA REQUIREMENTS. C.ALL HAZARDOUS MATERIALS INCLUDING BUT NOT LIMITED TO FUEL, GAS & OILS SHALL BE PROPERLY CONTAINED ON SITE TO PREVENT CONTAMINATION OR POLLUTION FROM SPILLS OR LEAKS. D.PORTABLE TOILETS SHALL BE PLACED ON SITE AND BE SECURE AND UNABLE TO BE TIPPED. WASTE SHALL BE DISPOSED OF IN ACCORDANCE WITH MPCA REQUIREMENTS. 8. PERMIT TERMINATION CONDITIONS A.FINAL STABILIZATION OF THE DISTURBED AREAS IS TO BE COMPLETED BY SEEDING WITH WITH THE SEED MIXTURES AS IDENTIFIED IN THE CONSTRUCTION PLANS. B.PRIOR TO THE OWNER TAKING POSSESION OF THE NEW STORMWATER TREATMENT AND COLLECTION SYSTEMS, ALL FACILITIES SHALL BE CLEANED AND FREE OF SEDIMENT AND DEBRIS. C.WHEN FINAL TURF ESTABLISHMENT REACHES 70% COVERAGE, TEMPORARY EROSION & SEDIMENT CONTROL DEVICES CAN BE REMOVED. THOSE MAY INCLUDE, BUT NOT BE LIMITED TO SILT FENCE, BIOROLL, INLET/OUTLET PROTECTION, & CONSTRUCTION EXITS. 9.SPECIAL OR IMPARIED WATER A.THE MISSISSIPPI RIVER IS LOCATED WITHIN 1-MILE OF THE PROJECT AREA. IT IS LISTED AS AN IMPAIRED WATER FOR AQUATIC LIFE AND AQUATIC RECREATION. ADDITIONAL IMPAIRMENTS FOR FC & PCB-F ARE ALSO LISTED. IF WORK IS DONE THAT DISCHARGES TO IMPAIRED WATERS, THE CONTRACTOR SHALL FOLLOW THE REQUIREMENTS OF THE PERMIT IN SECTION 23.1-14. IMPAIRED & SPECIAL WATERS MAP NOT TO SCALE ESTIMATED QUANTITIES 1.SILT FENCE (SINGLE ROW) - 615 LINEAR FEET 2.SILT FENCE (DOUBLE ROW) - 650 LINEAR FEET 3.BIO-LOG DITCH CHECKS - 13 EACH 4.FLARED END INLET PROTECTION - 3 EACH 5.ROCK CONSTRUCTION ENTRANCE - 1 EACH 6.PERMANENT SEEDING - 1.5-ACRES 7.TEMPORARY SEEDING - 1.5-ACRES (AS NEEDED) PROJECT AREA CSAH 39 RIVERWOOD NATIONAL GOLF COURSE KAHLER AVEKADLER AVELABEAUX AVEMISSISSIPPI RIVER 1-MILE CLASS I RIPRAPCLASS II RIPRAPSEDIMENT CONTROL LOGTRENCH ON UPGRADIENT SIDE OF BACKFILL AND COMPACT SOIL FROM (1 TO 2 IN. DEPTH)LOG IN SHALLOW TRENCH PLACE SEDIMENT CONTROL 8 IN. - 10 IN. EMBEDMENT DEPTHOR TOPSOILCOMPOST, SLASH MULCH, 8 IN. - 10 IN. EMBEDMENT DEPTHMINIMUM IN THE GROUND.BALE EMBEDDED 10 INCHES OR REINFORCING BARS IN EACH TWO 2 IN. X 2 IN. WOOD STAKES EMBED BALES 4 IN. INTO GROUND6 IN. STAPLES AT 1 FT. O.C.BLANKET (6 FT. WIDE MIN.)CATEGORY 3 EROSION CONTROL FLOW45°SEDIMENT CONTROL LOG2STAKE POINTING UPSTREAM.OF 45 DEGREES WITH THE TOP OF THE THE SEDIMENT CONTROL LOG AT AN ANGLE AS NEEDED. STAKES SHALL BE DRIVEN OVER 1 IN. X 2 IN. X 24 IN. LONG WOODEN STAKES FLOWWATEROF FILTER BERMALONG BOTTOM TYPE IV GEOTEXTILE COARSE FILTER AGGREGATEDITCH PROFILE1:2 SLOPE (TYP)2 FT.8 FT.PROFILEDITCH5 FT.2 FT.OF FILTER BERMALONG BOTTOM TYPE IV GEOTEXTILE PROFILEDITCH4 FT. MIN.MIN.2 FT. FLOW45°SEDIMENT CONTROL LOGTOP OF THE STAKE POINTING UPSTREAM.AT AN ANGLE OF 45 DEGREES WITH THE BACK HALF OF THE SEDIMENT CONTROL LOG STAKES SHALL BE DRIVEN THROUGH THE 1 IN. X 2 IN. X 24 IN. LONG WOODEN STAKES. 1123NOTES:4OTHER APPLICATIONS.SPACE BETWEEN STAKES SHALL BE A MAXIMUM OF 1 FOOT FOR DITCH CHECKS OR 2 FEET FOR SLOPES OR AS NEEDED DUE TO OTHER FACTORS. STAKES SHALL BE INCIDENTAL.PLACE STAKES AS NEEDED TO PREVENT MOVEMENT OF SEDIMENT CONTROL LOGS PLACED ON EMBEDMENT METHODFLOW4 IN.SEE SPECS. 2573, 3149, 3874, 3882, 3886, & 3897.3BLANKET METHOD (ALTERNATE)4PLACE STAKE THROUGH BALE AND BLANKET.INSTEAD OF TRENCHING, PLACE BALE ON THE BLANKET AND WRAP BLANKET AROUND THE BALE. FLOWFILTER BERMSSediment CONTROL logSBALE BARRIERSLONG. BALES SHALL BE PLACED ON EDGE AND BUTTED TIGHT TO ADJACENT BALES.MAX. DEPTH). BALES SHALL CONSIST OF TYPE 1 MULCH OF APPROXIMATELY 14 IN. X 18 IN. X 36 IN. TO BE USED FOR CRITICAL PERIMETER CONTROL AREAS WHERE STANDING WATER OCCURS (6 INCH TYPES: STRAW, WOOD FIBER, OR COIRTYPES: WOOD CHIP, COMPOST, OR ROCKTYPE 3 (ROCK WEEPER)TYPE 5 (ROCK)MULCH), OR TYPE 4 (TOPSOIL)TYPE 1 (COMPOST), TYPE 2 (SLASH WATERSTANDINGWATERSTANDINGREVISED:APPROVED: STATE DESIGN ENGINEERSTANDARD PLAN 5-297.4052 OF 8TEMPORARY SEDIMENT CONTROLFILTER BERMS, SEDIMENT CONTROL LOGS, AND BALE BARRIERSTRANSPORTATIONOFDEPARTMENTCHIEF ENVIRONMENTAL OFFICERREVISION:APPROVED: 2-28-20172-28-2017 DEGREES WITH THE TOP OF THE STAKE POINTING UPSTREAM.OF THE SEDIMENT CONTROL LOG AT AN ANGLE OF 45 SPACING. STAKES SHALL BE DRIVEN THROUGH THE BACK HALF 1 IN. X 2 IN. X 24 IN. LONG WOODEN STAKES AT 1 FT. MAXIMUM 2'24 IN. MIN.4 IN. MIN.(FOR USE ON ROUGH GRADED AREAS)FILTER BERMS TYPE 3 (ROCK WEEPER) OR FILTER TYPE 5 (ROCK)ROCK DITCH CHECKSSEDIMENT CONTROL LOG TYPE WOOD FIBER, OR TYPE COMPOST(FOR USE ON ROUGH GRADED AREAS)ALONG BOTTOM OF RIPRAPGEOTEXTILE FABRIC TYPE IV (SPEC. 3733)CATEGORY 3EROSION CONTROL BLANKETSEDIMENT CONTROL LOG TYPE WOOD FIBER(FOR ALL FILTER BERM TYPES)(SHOWN)FILTER BERM TYPE 3 OR 5EROSION CONTROL BLANKET BACKFILL WITH TAMPED NATURAL SOIL.CATEGORY 3 (8 FT. MIN. WIDTH)EROSION CONTROL BLANKET STAPLED APPROX. 6 IN. FROM EDGE (TYP.)BETWEEN ROWS. LEADING AND TRAILING EDGE SHALL BE MAX. SPACING WITHIN ROWS AND 2 FT. MAX. SPACING STAPLE BLANKET IN ROWS WITH 6 IN. STAPLES AT 18 IN. 1 FLOW"B"POINTDITCH CHECK HEIGHT (FT)% CHANNEL SLOPEX 100FLOWSTAKE6""A"POINT11"A"POINT"B"POINT"B"POINT1POINT "A"1POINT "A"SPACED 1' 0" ON CENTER8", 11 GA. STAPLESNOTES:2SEE SPECS. 2573, 3601, 3733, 3885, 3886 & 3889.DITCH CHECK SPACINGAPPROXIMATE SPACING OF DITCH CHECKS (FT.) = Y =CHECK TO PROVIDE FOR POOLING.ELEVATION AS THE TOP OF THE LOWERBOTTOM OF UPPER CHECK SHOULD BE SAMEFLOWY BY FORMULA (SEE NOTES)SPACING (Y) DETERMINEDEROSION CONTROL BLANKET 4" X 4" TRENCH BACKFILLED OVERAPPROXIMATE SPACING BETWEEN EACH DITCH CHECK SHOULD BE DETERMINED FROM THE FOLLOWING SPACING FORMULA:DIKE AND NOT AROUND THE ENDS.POINT "A" MUST BE A MINIMUM OF 6 INCHES HIGHER THAN POINT "B" TO ENSURE THAT WATER FLOWS OVER THEFLOWSEDIMENT CONTROL LOG TYPE BLANKET SYSTEMTHE ENDS FACING UPSTREAM.FOR DITCH CHECKS, PLACE SEDIMENT CONTROL LOG PERPENDICULAR TO FLOW AND IN A CRESCENT SHAPE WITHAPPROACH AND DEPARTURE SLOPE SHALL BE PROVIDED.PERMANENT ROCK DITCH CHECKS PLACED WITHIN THE CLEAR ZONE ARE TO BE 18" OR LESS IN HEIGHT. A 1:63DITCH GRADE 3% - 5%, MAX. FLOW VELOCITY 12 FT./SEC..45DITCH GRADE 1.5% - 3%, MAX. FLOW VELOCITY 4.5 FT./SEC..DITCH GRADE 1.5% - 3%, MAX. FLOW VELOCITY 1.5 FT./SEC..345REVISED:APPROVED: STATE DESIGN ENGINEERSTANDARD PLAN 5-297.4053 OF 8TEMPORARY SEDIMENT CONTROLDITCH CHECKTRANSPORTATIONOFDEPARTMENTANCHOR TRENCH. 2-28-2017CHIEF ENVIRONMENTAL OFFICERREVISION:APPROVED: 2-28-2017 BUTT JOINTS8" DIA. TYPE 9 MULCH MANHOLECATCH BASIN/FLANGES FLAP POCKETPIECE OF FABRIC.MADE FROM SINGLEBOTTOM TO BEFRONT, BACK, AND INLET SPECIFICATIONS AS PER THE PLANDIMENSION LENGTH AND WIDTH TO MATCHNOTES:AND ON FLAP POCKETSAROUND SIDE PIECESSTITCHED SEAMS ALLMINIMUM DOUBLE TYPE 9 MULCH113SPACING WITH OR WITHOUT A CURB BOX)(CAN BE INSTALLED IN ANY INLET TYPE1:21:2 DROP INLET WITH GRATETUBE RISER FILTER SOCK 2'-0"2 1/2"D=2"TUBE RISER 14.75" R5' MIN. LENGTH POST2"2"6"6" DIAMETER8"12"4"2"SURFACE ELEV.SOCK TO BE BELOW ROADADJUST LEVEL OF FILTER2.5' MAXON ALL POSTSGEOTEXTILE IN PLACE(50 LB TENSILE) HOLDSPLASTIC ZIP TIES254TYPE 9 MULCH 12" OUTLAY GEOTEXTILE UNDER GEOTEXTILE ANCHORAGE24"10"-12"12"12"USE WHERE INLET DRAINS IN AN AREA WITH SLOPES AT 1:3 or LESS265 43610 INCHES AROUND THE PERIMETER TO FACILITATE MAINTENANCE OR REMOVAL.FINISHED SIZE, INCLUDING POCKETS WHERE REQUIRED SHALL EXTEND A MINIMUM OF50 PSI. ZIP TIE.AGGREGATE FILL. SECURED WITHPREVENT LOSS OF OPEN GRADEDENDS SECURELY CLOSED TO SECTION SECTION PERSPECTIVE VIEW(DOWN POSITION)(UP POSITION)FILTER BAG INSERT SEDIMENT CONTROL INLET HAT SILT FENCE RING AND ROCK FILTER BERMWIRE OR PLASTIC TIESVARIES. SECURE TO GRATE WITHWIDTH ON BOTH SIDES, LENGTH EXTEND 10" BEYOND GRATEROD WITH WOOD 2" X 4") .WITH CAST CURB BOX REPLACE FOR REMOVAL ( FOR INLETS USE REBAR OR STEEL RODPOP-UP HEAD1TUBE RISERPOLYETHYLENEFLANGES AND A LID/COVER.FOR WATER INFILTRATION; HAVE AN OVERFLOW OPENING, THE CATCH BASIN/MANHOLE; HAVE PERFORATIONS TO ALLOWOR PLASTIC/POLYETHYLENE RISER SIZED TO FIT INSIDETHE SEDIMENT CONTROL BARRIER SHALL BE A METALNOTE:GROUND LINE EMBODIMENT18" MN. POST 8"DIRECTIONS, MEETING SPEC. 3886. ALL GEOTEXTILE USED FOR INLET PROTECTION SHALL BE MONOFILAMENT IN BOTHBE HEAT CUT INTO ALL FOUR SIDE PANELS)OVERFLOW HOLES (2" X 4" HOLE SHALLSOCK HEIGHT MUST NOT BE SO HIGH AS TO SLOW DOWN WATER FILTRATION TO CAUSEFLOODING OF THE ROADWAY.ROCK SOCK OR SAND BAGS IN PLACE OF THE FLAP POCKETS.FLAP POCKETS SHALL BE LARGE ENOUGH TO ACCEPT WOOD 2 INCH X 4 INCH OR USE A STEEL COVER 3/16" THICK (MIN.) STEEL PLATE3/16" THICK (MIN.) STEEL PLATE3/16" THICK (MIN.)ROCK LOG/COMPOST LOG1/2 W DW1/2 DCONFORMING TO SPEC. 3137 TABLE 3137-1; CA-3 GRADATION.AGGREGATE CONSISTING OF SOUND DURABLE PARTICLES OF COARSE AGGREGATEHEAT BONDED SEAM (OR APPROVED EQUIVALENT). FILL ROCK LOG WITH OPEN GRADED JOINED BY TWO ROWS OF STITCHING WITH A PLASTIC MESH BACKING OR PROVIDE AGEOTEXTILE SOCK BETWEEN 4-10 FEET LONG AND 4-6 INCH DIAMETER. SEAM TO BE WIREREINFORCED WITH36" GEOTEXTILESEE SPECS. 2573, 3137, & 3886.THAT WOULD IMPEED TRAFFIC FLOW.DEVICES MUST BE ADJUSTED ACCORDINGLY AS TO NOT CAUSE FLOODING ON ROADWAYTO ACHIEVE THE 3 INCH SIDE CLEARANCE. WHERE NECESSARY THE CONTRACTOR SHALL CLINCH THE BAG, USING PLASTIC ZIP TIES,THE INLET WALLS AND THE BAG, MEASURED AT THE BOTTOM OF THE OVERFLOW HOLES. PLACED BAG SHALL HAVE A MINIMUM SIDE CLEARANCE OF 3 INCHES BETWEENMEASURED FROM THE BOTTOM OF THE INLET TO THE TOP OF THE GRATE. THE DO NOT PLACE FILTER BAG INSERT IN INLETS SHALLOWER THAN 30 INCHES, INSTALLATION NOTES: REVISED:APPROVED: STATE DESIGN ENGINEERSTANDARD PLAN 5-297.4054 OF 8TEMPORARY SEDIMENT CONTROLSTORM DRAIN INLET PROTECTIONTRANSPORTATIONOFDEPARTMENTCHIEF ENVIRONMENTAL OFFICERREVISION:APPROVED: 2-28-20172-28-2017 SEE SPECS. 2573 & 3882.MIN. LENGTH = 242343SURFACE FLOWTRAPSEDIMENTMIN. LENGTH = 23SURFACE FLOWTRAPSEDIMENT4MIN. 10 FT MIN. 10 FT 6 567TRACKING OFF OF PAD WHEN LEAVING SITE.PROVIDE RADIUS OR WIDEN PAD SUFFICIENTLY TO PREVENT VEHICLE TIRES FROM REMOVE CONSTRUCTION SEDIMENT FROM VEHICLE TIRES.ADDITIONAL VIBRATION. WASH-OFF LENGTH SHALL BE AS REQUIRED TO EFFECTIVELY RUMBLE PAD SHALL BE LENGTHENED OR THE DESIGN MODIFIED TO PROVIDE SEDIMENT FROM TIRES. IF SIGNIFICANT SEDIMENT IS TRACKED FROM THE SITE, THE MINIMUM LENGTH OF RUMBLE PAD SHALL BE 20 FEET, OR AS REQUIRED TO REMOVE 77OPERATIONS.SHALL BE CALCULATED USING THE LARGEST TIRE WHICH WILL BE USED IN TYPICAL ALLOW A MINIMUM OF 5 TIRE ROTATIONS ON THE PROVIDED PAD. MINIMUM LENGTH MINIMUM LENGTH SHALL BE THE GREATER OF 50 FEET OR A LENGTH SUFFICIENT TO SEDIMENT TRAP WITH STABILIZED OVERFLOW.IF RUNOFF FROM CONSTRUCTION EXITS WILL DRAIN OFF OF PROJECT SITE, PROVIDE SHEET PADPAD CONSTRUCTION EXITSLASH MULCH, CRUSHED ROCK, OR SHEETRUMBLE PADCONSTRUCTION EXITRUMBLE PAD 1551 EFFECTIVENESS.MULCH OR CRUSHED ROCK) OVER SEDIMENT FILLED MATERIAL TO RESTORE SEDIMENT AND CLEANING THE MATERIALS OR PLACING ADDITIONAL MATERIAL (SLASH SEDIMENT REMOVAL HAS BEEN REDUCED. MAINTENANCE SHALL CONSIST OF REMOVING MAINTENANCE OF CONSTRUCTION EXITS SHALL OCCUR WHEN THE EFFECTIVENESS OF SPECIFICATION.OTHER PER SHEET PAD, OR CRUSHED ROCK,SLASH MULCH,SPECIFICATION.OTHER PER SHEET PAD, OR CRUSHED ROCK,SLASH MULCH,AT 1:1TAPER EDGESAT 1:1TAPER EDGESGEOTEXTILE FABRICGROUNDINPLACE6" MIN.COMPACTED SOILCROSS SLOPE 3% OR FLATTERGEOTEXTILE FABRICCORRUGATED STEEL PANELSSLASH MULCHTO 2'' CRUSHED ROCK OR 6'' MIN. DEPTH OF 1'' REQUIREDRADIUS ASPUBLIC ROADAS REQUIREDENTRANCE WIDTHREQUIREDRADIUS ASPUBLIC ROADAS REQUIREDENTRANCE WIDTHTRAFFIC FLOWFORM POCKETS)(TWO LAYERS SEWN TOGETHER TO HIGH STRENGTH GEOTEXTILE FABRICCRUSHED ROCK OR SLASH MULCH6'' MIN. DEPTH OF 1'' TO 2'' RUMBLE PADSLASH MULCH OR CRUSHED ROCKNOTES:INSUFFICIENT, PROVIDE OTHER MEANS OF INTERCEPTING RUNOFF.CROWNING THE EXIT OR SLOPING TO ONE SIDE. IF SURFACE GRADING IS RUNOFF FROM DRAINING DIRECTLY TO PUBLIC ROAD OVER CONSTRUCTION EXIT BY IF RUNOFF FROM DISTURBED AREAS FLOWS TOWARD CONSTRUCTION EXITS, PREVENT DRAIN THE WASH WATER TO A SEDIMENT TRAP. IF A TIRE WASH OFF IS REQUIRED THE CONSTRUCTION EXITS SHALL BE GRADED TO REINFORCED RIBSMIN. 2" DIA. HIGH TENSILREVISED:APPROVED: STATE DESIGN ENGINEERSTANDARD PLAN 5-297.4055 OF 8TRANSPORTATIONOFDEPARTMENTTEMPORARY SEDIMENT CONTROLSTABILIZED CONSTRUCTION EXITCHIEF ENVIRONMENTAL OFFICERREVISION:APPROVED: 2-28-20172-28-2017 GEOTEXTILE FABRICNATURAL SOILBACKFILL WITH TAMPED FABRIC ANCHORAGE TRENCH. AGGREGATECOARSE FILTER NATURAL SOILBACKFILL WITH TAMPED FABRIC ANCHORAGE TRENCH. 1:6 TYPI CALVARI ABLE10-20% SLOPE GRADE25' MIN. WITHTOE OF SLOPEFUTURE BRIDGEROADWAY SHOULDERVARIABLE1:2 TYP.BRIDGE END SLOPEEMBANKMENTTOE OF SLOPEFUTURE BRIDGEROADWAY SHOULDERVARIABLE1:2 TYP.BRIDGE END SLOPEEMBANKMENTSAND BAG BARRIERSILT FENCE TO MEETTOE OF EMBANKMENTSILT FENCE WRAPPED AROUNDTOE OF SLOPEFUTURE BRIDGEROADWAY SHOULDERVARIABLE1:2 TYP.EMBANKMENTEMBANKMENT OR WORK ROAD END SLOPEMEET SHEETINGSILT FENCE TOFROM TOE OF END SLOPE.COURSE. EXTEND 50 FT. BACKHIGH ADJACENT TO WATERSAND BAG BARRIER 3 FT.< ROADWAYCONSTRUCTION LIMITSSLOPE AND OUTSIDE OFSILT FENCE NEAR TOE OFSILT FENCETO STREAMWORK AREA DRAINSDISTRURBED SOIL,LIMITSCONSTRUCTIONLIMITSCONSTRUCTIONLARGER EQUIPMENT)(MAY BE LARGER WITHTURNING RADIUS = 10'MINIMUM POSSIBLESILT FENCESTREAM BANK OR TOE OF SLOPESTREAM BANK OR TOE OF SLOPEPLAN VIEW1 NOTES:COARSE FILTER AGGREGATE (SPEC. 3149) SHALL BE INCIDENTAL. SEE SPECS. 2573, 3149 & 3886.BACK FROM TOE OF END SLOPE.TO WATER COURSE. EXTEND 10 FT.TEMPORARY SHEETING ADJACENTPERSPECTIVE VIEWJ-HOOK INSTALLATION LOCATION AT TOE OF ROADWAY EMBANKMENTGEOTEXTILE FABRIC, 36 IN. WIDE6 IN. MIN.6 IN. MIN.EMBEDMENT2 FT. MIN. POST MIN.12 IN.MIN.6 IN.LOCATED IN TOP 8 IN.(50 LB. TENSILE)PLASTIC ZIP TIESFLOWFLOWGEOTEXTILE FABRIC1AT 6 FT. MAX. SPACING5 FT. MIN. LENGTH POSTEMBEDMENT 2 FT. MIN. POST LOCATED IN TOP 8 IN.(50 LB. TENSILE)PLASTIC ZIP TIESTIRE COMPACTION ZONEAT 6 FT. MAX. SPACING5 FT. MIN. LENGTH POSTMACHINE SLICE8 IN. - 12 IN. DEPTHFLOWFLOWGEOTEXTILE FABRIC, 36 IN. WIDE6 IN. MIN.6 IN. MIN.EM BEDMENT 18 IN. MIN. POST GEOTEXTILE FABRIC, 36 IN. WIDESTAPLES (TYP.)AT 6 FT. MAX. SPACING5 FT. MIN. LENGTH POSTFLOWFLOW22323TO PROTECT AREAS FROM SHEET FLOW. MAXIMUM CONTRIBUTING AREA: 1 ACRE.TO PROTECT AREAS FROM SHEET FLOW. MAXIMUM CONTRIBUTING AREA: 0.25 ACRE.SEE OPTIONAL METHOD DETAILOPTIONAL METHOD900920910INSTALLATION AT BRIDGE EMBANKMENT ADJACENT TO WATER(HAND INSTALLED)SILT FENCE TYPE HI(MACHINE SLICED)SILT FENCE TYPE MS(PREASSEMBLED)SILT FENCE TYPE PA4CONTRIBUTING SLOPE AREA: 1./2 ACRE.WATER COURSE FLOW VELOCITY: STANDING.56CONTRIBUTING SLOPE AREA: 1. ACRE.WATER COURSE FLOW VELOCITY: 1 TO 7 FT./SEC.CONTRIBUTING SLOPE AREA: 3 ACRES.WATER COURSE FLOW VELOCITY: 8 TO 15 FT./SEC.456SILT FENCE ONLYSILT FENCE WITH SAND BAGSSILT FENCE WITH SHEETINGREVISED:APPROVED: STATE DESIGN ENGINEERSTANDARD PLAN 5-297.4056 OF 8TEMPORARY SEDIMENT CONTROLSILT FENCETRANSPORTATIONOFDEPARTMENTCHIEF ENVIRONMENTAL OFFICERREVISION:APPROVED: 2-28-20172-28-2017 STANDARD PLAN 5-297.4058 OF 8REVISED:APPROVED:STATE DESIGN ENGINEEREND VIEWLONGITUDINAL SECTIONFLOWTOP VIEW (FLOOD STAGE)EMERGENCY SPILLWAYTO TOP OF CULVERT PIPERIPRAP USED TO FILL ONLY 1NOTES:PLAN VIEW12'' - 36''2' 0'' `33ROAD EMBANKMENT28'' - 10'' ON CENTER1'' HOLES SPACEDCULVERT STANDPIPEINSERT 1/3 DIAMETER OF RISER PIPEGEOTEXTILEWRAPPED WITHSTANDPIPEPERFORATED12HORIZONTAL PIPESTANDPIPE TO FITCUT OPENING INBREAK AWAY CONNECTIONBREAK AWAY CONNECTION44PARALLEL TO FLOWSTANDPIPE AND SETCONNECT TO5/8'' MIN. DIA.,ANTIVORTEX ROD,BREAKAWAY CONNECTIONPVC PIPEAS A FILTER BETWEEN RISER PIPE AND CULVERT.ROCK LOG OR RIP RAP TO HOLD STANDPIPE AND ACT ELEVATION VIEW OF CULVERT INSTALLATION(CSP,RCP,.PLASTIC)INLET END OF CULVERTFOR MACHINE SLICED.MONOFILAMENT IN BOTH DIRECTIONS, MEETING SPEC. 3886ALL GEOTEXTILE USED FOR CULVERT PROTECTION SHALL BEAS A SEAL BETWEEN RISER PIPE AND CULVERT.ROCK LOG OR SANDBAG TO HOLD STANDPIPE AND ACT ELEVATIONSHOULDERMIN. 1' BELOWTOP OF RISERFLOWd + 12"d= CULVERT SIZE:5SEE SPECS. 2573, 3891 & 3893.5NO ADDITIONAL COST.APPROVED PRODUCTS LIST MAY BE SUBSTITUTED AT MANUFACTURED ALTERNATIVES LISTED ON MnDOT'SADJACENT PROPERTIES.HEIGHT OVERFLOW NOT TO CAUSE FLOODING OF ROAD OR2'2d(COMPOST, WOOD CHIP, OR ROCK)SEDIMENT CONTROL LOG WEIROF PLANKS TO CONTROL WATER LEVEL.IN TOP PLANK. VARY THE NUMBERCULVERT END. SPILLWAY NOTCHEDTOGETHER AND AGAINST THEWOOD PLANKS TIGHTLY ABUTTEDd = CULVERT SIZE: 12"-36"SCOURINGPREVENT END-AROUNDEMBANKMENT TO TIE ENDS INTO5FLOW5CULVERT STANDPIPE INSERT (D-RISER)CULVERT STANDPIPE INSERT (D-RISER) WRAPPED AROUND RISER TYPE ROCK MAY BE NOTE: SEDIMENT CONTROL LOGSEDIMENT CONTROL LOG TYPE ROCKSEDIMENT CONTROL LOG TYPE ROCKWOOD PLANK WEIRWOOD PLANK WEIRVAR.SECTIONS FOR SEDIMENT CONTROL.FOR USE WHEN TEMPORARY PONDING IS NEEDED IN DITCHTRANSPORTATIONOFDEPARTMENTSCOURINGPREVENT END-AROUNDTO APRON END TO FRONT WEIR SECTIONEMBANKMENT OR TIETIE ENDS INTOTEMPORARY SEDIMENT CONTROLCULVERT END CONTROLSINTO CSP OR RCP CULVERT.PLACE CULVERT APRON AND SLIDE TEMPORARY STANDPIPE CHIEF ENVIRONMENTAL OFFICERREVISION:APPROVED: 2-28-20172-28-2017 BITUMINOUS SHOULDER3'' MIN. TOPSOILTOPSOIL2ND STAGE CONSTRUCTION1ST STAGE CONSTRUCTIONSEE TYPICAL SECTIONSVARIES1'' (WHEN SOD IS PLACED)SOD OR SEED & MULCHGROUND LINE< ROADWAYDESIRABLER/W LINE20'< ROADWAYVAR.VAR.1:6ROUNDING SHOULDERS AND BACKSLOPESLIMITSCONSTRUCTIONROADWAYSHOULDERCURB6' 0'' MIN.WITH TOP OF CURBTOP OF SOD EVENBELOW TOP OF CURBTOP OF TOPSOIL 1 INCHSHAPING ADJACENT TO CURBS WHEN SOD IS PLACED< DITCH8' 0'' DESIRABLE1/2''/FT.SLOPESODDED DITCH CROSS SECTIONM IN. DEPTH 1' 0''18' 0'' MIN.STAGGER JOINTSFLOWFLOWCRI TI CAL FLOWDITCH PROFILESODDED DITCH DETAILSTOPSOIL3'' MIN. INTOEXTEND SODP.I.P.I.P.I.STAGGER JOINTSFLUME APRON FLOW 30°1' 0''P.I.P.I.VARIABLE WIDTH 12' - 20'PLAN VIEWSECTION A-A1' 0''1' 0''P.I.BACK SLOPENORMALBOTTOMNORMAL DITCHAABBSODDED FLUME DETAILSSECTION B-B1 0'FLOWVARIABLEAPRONFLUMETOPSOIL3'' MIN. INTOEXTEND SOD1' FINISHED DEPRESSED SODDED FLUMEBACKSLOPETOE OF18' 0'' MIN. SOD WIDTHTHEORETICAL DITCH GRADESHAPING FOR DRAINAGE ALONG THE TOE OF FILL SLOPESFIRST NOTCH DITCH AND THEN PROVIDE ROUNDING.WHERE FRONT OR BACK SLOPE IS FLAT (LESS THAN 1/2''/FT.) ,1SHAPING AND TOPSOILING INSLOPESCONTOURING ROAD CUTSTRANSITIONROUND OUT CUT1' 0''1' 0''12' 0''12' INTERVALS12' INTERVALS < OF DITCH1' 0''8' 0'' 12' 0''1' 0''12' INTERVALS 10' 0''VARIABLE BACKSLOPETOP OF1' 0''1' 0''EXTEND SOD AT 12' INTERVALS< OF DITCH< APPROX. 8'EXTEND SOD PASTEXTEND SOD AT 12' INTERVALSAPPROX.CONSTRUCT TAPER AS DIRECTED BY THE ENGINEER.SEE SPEC. 2575.3 FOR ADDITIONAL INFORMATION.1' 0''1' 0''PLAN VIEW1 TOP OF BACKSLOPEBACKSLOPENORMALSODDED DITCH GRADEFINISHED DEPRESSEDNOTES:5'5'5'5'5'5' REVISED:APPROVED:STATE DESIGN ENGINEERSTANDARD PLAN 5-297.4041 OF 3PERMANENT EROSION CONTROLALONG ROADWAYS, DITCHES AND FLUMESAGGREGATESHOULDER BASETRANSPORTATIONOFDEPARTMENT2-28-2017CHIEF ENVIRONMENTAL OFFICERREVISION:APPROVED: 2-28-2017 STANDARD PLAN 5-297.4042 OF 3CULVERT OUTLET APRONCULVERT INLET APRONPERMANENT EROSION CONTROLTURF ESTABLISHMENT DETAIL AT CULVERT ENDSREVISED:APPROVED:STATE DESIGN ENGINEERROAD SURFACEDDBA CCTYP.BACCROAD SURFACESODDING DETAIL6'' `''A''''B''''C''''D''''A''''B''''C''''D''DIAMETERCULVERTEROSION CONTROL BLANKET & SEED DETAILADDITIONAL QUANTITIES MAY BE SHOWN IN THE PLAN OR REQUIRED BY THE ENGINEER.1NOTES:72''66''60''54''48''42''36''30''27''24''21''18''15'' DIAMETERCULVERT72''66''60''54''48''42''36''30''27''24''21''18''15'' 4.5'4.5'4.5'4.5'4.5'4.5'4.5'3'3'3'3'3'3'10.5'9'9'9'7.5'6'4.5'4.5'4.5'3'3'3'1.5'4.5'4.5'4.5'4.5'4.5'4.5'4.5'3'3'3'3'3'3'41'39'39'37'34'30'27'22'20'18'17'16'13'7869696554433423 N/A1614139726359585040342220151412999N/A918166513925N/A1614128122N/A11510282644830N/A1916148N/AN/AN/AN/AN/AN/A5132N/A211816N/AN/AN/AN/AN/AN/AN/A37N/AN/A1714N/AN/A1.5'1.5'1.5'1.5'1.5'1.5'1.5'1.5'1.5'1.5'1.5'1.5'1.5'6'6'6'4.5'4.5'4.5'4.5'3'3'3'3'3'3'34'33'33'29'27'25'23'18'17'16'15'14'13'16.5'16.5'16.5'15'13.5'12'10.5'9'7.5'7.5'6'6'4.5'7775745750433623N/A181613107067635046403523191814131092N/A906757473824N/A1816129114N/A1138470584728N/A21181410N/AN/AN/AN/AN/AN/A4829N/A221915N/AN/AN/AN/AN/AN/AN/A37N/AN/A1815N/AN/AAN 18'' ROLLROLLS BY 3'' FOROVERLAP SOD 3'' AT THE TOPTRENCH IN SOD( SPEC. 3878 )S0D, TYPE EROSION 11 REQUIRED).PER SQUARE YARD ARETHE ROLL. (3 STAPLESALONG THE LENGTH OFTHE ROLL AT 2' INTERVALSON THE UPHILL SIDE OFSOD SHALL BE STAPLEDBLANKETPRIOR TO PLACINGAS SHOWN IN PLAN,(SPEC. 3876), OR SEED WITH 25-141EDGE OF BLANKETTRENCH IN LEADING222PLATE 3122)(PLATE 3123,METAL APRONARCH PIPECIRCULAR ANDPLATE 3110)(PLATE 3100,APRONCONCRETE ARCH PIPECIRCULAR AND(PLATE 3148)1:4 SLOPEAPRON METAL SAFETYARCH PIPECIRCULAR AND(PLATE 3148)1:6 SLOPEAPRON METAL SAFETYARCH PIPECIRCULAR AND(PLATE 3128)1:4 SLOPESAFETY APRON METAL PIPECORRUGATEDCIRCULAR PLATE 3122)(PLATE 3123,METAL APRONARCH PIPECIRCULAR ANDPLATE 3110)(PLATE 3100,APRONCONCRETE ARCH PIPECIRCULAR AND(PLATE 3148)1:4 SLOPEAPRON METAL SAFETYARCH PIPECIRCULAR AND(PLATE 3148)1:6 SLOPEAPRON METAL SAFETYARCH PIPECIRCULAR AND(PLATE 3128)1:4 SLOPESAFETY APRON METAL PIPECORRUGATEDCIRCULAR SOD OR EROSION CONTROL BLANKET (SQ. YDS.)SOD OR EROSION CONTROL BLANKET (SQ. YDS.)FLOW VELOCITIES GREATER THAN 6 FPS.CARE SHOULD BE TAKEN IN SELECTING SOD TO STABILIZE THE APRON. RIP-RAP SHOULD BE USED FORTHAN 1:2, UNLESS INDICATED AS FOR SAFETY APRONS.AREAS AND DIMENSIONS ARE APPROXIMATE AND ARE BASED ON APRON SIDE SLOPES OF NO STEEPER(PLATE 3123).FOR CORRUGATED POLYETHYLENE PIPE METAL APRON (PLATE 3129), USE THE METAL APRON COLUMNFOR PIPE ARCHES USE EQUIVALENT PIPE DIAMETER TO APPROXIMATE AREA.ROLLS. THIS ALLOWS FOR SHRINKAGE OF THE SOD.QUANTITIES ARE CALCULATED TO INCLUDE SOD REQUIRED TO PROVIDE A 3'' OVERLAP ON ALL 18'' WIDE AREA SHOWN IN SQUARE YARDS IS FOR ONE CULVERT END.6"6"6"6"SODBLANKET3"INTERVALSMAXIMUM 1' 6''STAPLED AT (SPEC. 3885)SHOWN IN PLAN3 (P OR N), OR ASBLANKET CATEGORYEROSION CONTROLWITH SOILFILL TRENCHTAMP AND(PLATE 3128)1:6 SLOPESAFETY APRON METAL PIPECORRUGATEDCIRCULAR (PLATE 3128)1:6 SLOPESAFETY APRON METAL PIPECORRUGATEDCIRCULAR TRANSPORTATIONOFDEPARTMENTWITH SOILFILL TRENCHTAMP AND(DIAMETERS LARGER THAN 72" REQUIRE SPECIAL DESIGNS.)FOR ARCH PIPE USE CLOSEST CIRCULAR PIPE DIAMETER AND APRON SLOPE.CHIEF ENVIRONMENTAL OFFICERREVISION:APPROVED: 2-28-20172-28-2017 REVISED:APPROVED: STATE DESIGN ENGINEERSTANDARD PLAN 5-297.4043 OF 3PERMANENT EROSION CONTROLBLANKET STAPLE PATTERN FOR SLOPES(120 STAPLES PER 100 SQ YD)(170 STAPLES PER 100 SQ YD)(350 STAPLES PER 100 SQ YD)CURBSIDEWALKSHOULDER 1.5'1.0'CHECK SLOT ALTERNATIVECHECK SLOT WHERE BLANKET CONTINUESCHECK SLOT AT BEGINNING OF BLANKET1.5'3'3'6'2'20"4'SLOPES FLATTER THAN 1:2SLOPES 1:2 TO 1:1CHANNEL AND DITCH APPLICATIONS1.5'3'2'4'6"6"L 1' TO 3'BLANKET OVERLAPGENERAL BLANKET INSTALLATION REQUIREMENTSCHECK SLOT REQUIREMENTS DIG 6 INCH BY 6 INCH TRENCH.INSERT BLANKET INTO ENTIRE TRENCH PERIMETER.6"6"L 6"1' TO 3'WA T E R F L O WCHECK SLOT DETAILSSHOULDERBLANKET STAPLE PATTERNGREATER THAN 2% DITCH GRADES12" AT SEAMS FORGREATER THAN 100'OF SLOPE WHEN L ISCHECK SLOT 1/3 FROM TOE427 CHECKBLANKET 14"4"6"ON OVERLAP.PLACE SINGLE ROW STAPLES AT 3' SPACINGTHE BOTTOM OF THE TRENCH.PLACE SINGLE ROW STAPLES AT 3' SPACING ALONGPLACE SINGLE ROW STAPLES AT 12" SPACINGPLACE SINGLE ROW STAPLES AT 12" SPACINGFLOWSLOPE4" 4"OVERLAP ADJACENT STRIP EDGES A MINIMUM OF 4 INCHES.APART AND 4" ON CENTER.PLACE DOUBLE ROW OF STAPLES STAGGERED 4"2PLACE SINGLE ROW OF STAPLES AT 12" SPACING.456OF STAPLES STAGGERED 4" APART AND AT 4" SPACING.2.5% GRADE AT 100 FOOT INTERVALS. PLACE DOUBLE ROWUSE STAPLE CHECK FOR CHANNEL SLOPES LESS THAN5CHECKSTAPLE FLOWDITCH BLANKET STAPLE DETAILDITCH BLANKET STAPLE DETAIL NOTES6"6"IN LIEU OF TRENCHREINFORCED MATRIXFIBER MATRIX ORHYDRAULIC BONDED 6"4" PATTERNS.CRITICAL POINTS SHALL BE SECURED WITH PROPER STAPLE7DITCH BLANKET CRITICAL POINTSOVERLAPS AND SEAMS75%-7% 25 FT INTERVALS 3%-5% 50 FT INTERVALS2.5%-3% 100 FT INTERVALSUSE BLANKET CHECKS FOR THE FOLLOWING SLOPES:6PREPARE SOIL AS PER SPECIFICATION 2574.LAY PARALLEL OR PERPENDICULAR TO THE DIRECTION OF WATER FLOW.BLANKET OVER TOP END OF LOWER BLANKET. STAPLE ALONG OVERLAP EVERY 1.5'.OVERLAP BLANKET 6" (MIN.) AT EACH END. OVERLAP BOTTOM END OF UPPER 1/3 FROM THE BOTTOM OF THE SLOPE.IF SLOPE LENGTH (L) IS 100' OR GREATER, INSERT BLANKET INTO A CHECK SLOTTHE UPPERMOST BLANKET OF ALL SLOPE APPLICATIONS MUST START IN A CHECK SLOT.BACKFILL TRENCH WITH SOIL AND TAMP.OVERLAP/WRAP2' FLOWUSE CHECK SLOT DETAIL (NO ALTERNATES).1BACKFILL TRENCH WITH SOIL AND TAMP.ROW OF STAPLES ON TOP AND TRENCH SIDES AT 12" SPACING.USE 6" X 6" TRENCH TO PLACE BLANKET. PLACE SINGLE3TRANSPORTATIONOFDEPARTMENTINTERSECTIONCHANNEL BOTTOM/SIDE SLOPE 2-28-2017CHIEF ENVIRONMENTAL OFFICERREVISION:APPROVED: 2-28-2017