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SOIL STAB I L I Z A T I O N : INFILTRATION AREA CONSTRUCTION : SWPPP AMENDMENTS :
<br /> 1. All seeded areas shall be either mulched and disc-anchored or covered by fibrous blankets to protect seeds and limit erosion. 1. Protect the filtration area from compaction and disturbance of existing soils. 1. Amend the SWPPP in order to include additional requirements such as additional or modified BMPs whenever there is a change in
<br /> design, construction, operation, maintenance, weather or seasonal conditions that has a significant effect on the discharge of pollutants
<br /> 2. Water and maintain seeded or sodded areas on a timely day-to-day basis. In the event of a seeding failure, reseed and remulch the 2. Report any signs of high water table or compaction of the in place soils to the Engineer. to surface waters or underground waters.
<br /> areas where the original seed has failed to grow and perform additional watering as necessary at no additional cost to the Owner. ARCHITECTS
<br /> Promptly replace all sod that dries out to the point where R is presumed dead and all sod that has been damaged, displaced, 3. Schedule the construction so that excavation of the filtration system to final grade occurs after the contributing drainage areas have 2. Amend the SWPPP whenever inspections indicate that the SWPPP is not effective in eliminating or significantly minimizing the discharge
<br /> weakened, or heavily infested with weeds at no add[Canal cost to the Owner, been constructed and fully stabilized. Excavate the flltratlon areas to within one foot of final grade initially. Delay final excavation of of pollutants to surface waters or underground waters.
<br /> the basin floor until all disturbed areas tributary to the basin are stabilized. Utilize tracked excavation equipment that has relatively
<br /> 3. In areas to be temporarily seeded, where native mixes will be used for permanent establishment, use MN state seed mixture 32-241. light bearing pressures. No heavy equipment is allowed on the filtration areas before or after construction. 2. Amend the SWPPP whenever inspections indicate that discharges are exceeding water quality standards.
<br /> Apply seed mixture at a rate of 38 lbs per acre in accordance with MNDOT Standard Spec. 2575.3. Incorporate a Type 1 fertilizer
<br /> consisting of 10-10-10 (%N-P-K) into the soil at an application rate of 200 lbs per acre by disking prior to seeding. Prepare the 4. Delineate the location of infiltration areas
<br /> )s (e.g. with flags, stakes, signs, silt fence, etc.) before work begins so that heavy construction 3. Amend the SWPPP if it is not achieving the general objectives of minimizing pollutants in stormwater discharges associated with
<br /> soil in accordance with MNDOT Standard Spec. 2574.3, except for stockpiles and berms where no soil preparation is needed. equipment will not compact the soil in the proposed infiltration system. construction activity, or the SWPPP is not consistent with the terms andi conditions of the permit.
<br /> 2. In areas to be temporarily seeded, where non-native mixes will be used for permanent establishment, use MN state seed mixture 5. Use rigorous erosion prevention and sediment controls (e.g. diversion berms) during the construction of the filtration system in order to
<br /> 22-112. Apply seed mixture at a rate of 40 lbs per acre in
<br /> n accordance with MNDOT Standard Spec. 2575. Incorporate a Type 1 keep sediment and runoff completely away from the filtration area.
<br /> fertilizer consisting of 10-10-10 (%N-P-K) into the soil at application rate of 200 lbs per acre by disking prior to seeding. D E WATER I N G AND BASIN DRAINING : POPE ARCHITECTS,INC.
<br /> Prepare the soil in accordance with MNDOT Standard Spec. 2574.3, except for stockpiles and berms where no soil preparation is 6. Inspect all filtration areas in order to ensure that no sediment from ongoing construction activity is reaching the filtration areas and 1295 BANDANA BLVD N,SUITE 200
<br /> needed. that these areas are protected from compaction due to construction equipment driving across the filtration areas. 1. If dewatering is required and sump pumps are used, all pumped water must be discharged through an erosion control facility
<br /> (temporary sedimentation basin, grit chamber, sand filter, upflow chamber, hydro-cyclone, swirl concentrator, dewatering bag or other ST.PAUL,MN 55108-2735
<br /> 3. In areas to be permanently seeded use native MN state seed mixture 35-241. Apply seed mixture at a rate of 36.5 lbs per acre in appropriate facility) prior to leaving the construction site. Proper energy dissipation must be provided at the outlet of the pump (651)642-9200 I FAX(651)642-1101
<br /> accordance with MNDOT Standard Spec. 2575. Incorporate a Type 3 fertilizer (slow release type with 10 week residual) consisting of 7. Use native MN state seed mixture 33-261. Apply seed mixture at a rate of 35 lbs per acre in accordance with MNDOT Standard system. w.popearch.corn
<br /> 22-5-10 (%N-P-K) into the soil at an application rate of 200 lbs per acre by disking prior to seeding. Prepare the soil nin Spec. 2575. Incorporate a Type 3 fertilizer (slow release type with 10 week residual) consisting of 22-5-10 (%N-P-K) into the soil
<br /> accordance with MNDOT Standard Spec. 2574.3, except for stockpiles and berms where no soil preparation is needed. at anapplication rate of 200 lbs per acre by disking prior to seeding. Prepare the soil in accordance with MNDOT Standard Spec. 2. Discharge all water from dewatering or basin draining activities in a manner that does not cause nuisance conditions, erosion in
<br /> 2574.3 receiving channels or on down gradient properties, or inundation in wetlands causing significant adverse impact to the wetlands.
<br /> 4. Establish native seed mix accordance with MNDOT Standard Spec. 2575.3. Seed native mixes with a native seed drill, a drop type YANIK COMPANIES
<br /> seeder, or a hydro seeder at the adjusted bulk application rate of each mixture. Use a drill capable of accurately meterng the types 8. Establish native seed mix in
<br /> a
<br /> accordance with MNDOT Standard Spec. 2575.3. Seed native m with a native seed drill, a drop type 3. If discharge water may be contaminated or come in contact with oil or grease an oil-water separator or suitable filtration device such
<br /> of seed planted and capable of maintaining a uniform mixture of seeds during drilling. Use a drill with disk furrow openers and a seeder, ora hydro seeder at the adjusted bulk application rate of each mixture. Use a drill capable of accurately metering the types as cartridge filters or absorbent pads must be used prior to discharging water.
<br /> packer assembly to compact the soil directly over the drill row. Seed native mixes in rows spaced no greater than 8 inches apart. of seed planted and capable of maintaining a uniform mixture of seeds during drilling. Use a drill with disk furrow openers and a BHS INNSBRUCK
<br /> Place seeds to a final planting depth from %inch to %inch. Perform drill seeding at a right angle to surface drainage. A drop type packer assembly to compact the soil directly over the drill row. Seed native mixes n rows
<br /> spaced no greater than 8 inches apart.
<br /> seeder equipped with a separate seed box for the fluffy seed and a soil packer assembly may be used in lieu of a drill with disc Place seeds to a final planting depth from %inch to %inch. Perform drill seeding ataright angle to surface drainage. A drop type SENIOR HOUSING
<br /> openers. Use a cyclone or areas
<br /> spinner type seeder onno
<br /> o greater than 1 acreinaccessible to other equipment, asseeder equipped with a separate seed box for the fluffy seed and a soil packer assembly may be used in lieu of a drill with disc
<br /> approved by the Engineer. Lightly harrow or rakethesitefollowing the seedingoperationOfePackthe site following harrowing in order to openers. Use a cyclone or spinner type seeder on areas no greater than 1 acre or on areas inaccessible to other equipment, as NEW BRIGHTON MN
<br /> ensure a firm seed-bed. approved by the Engineer. Lightly harrow or rake the site following the seeding operation. Pack the site following harrowing in order to
<br /> ensure a firm seed-bed. 1
<br /> 5. Comply with the requirements of MNDOT Standard Spec. Table 2575-1 for season
<br /> of planting native seed mixtures. The appropriate
<br /> dates for spring seeding are from April 15 through July 20. Fall seeding dates are from September 20 to October 20. Dormant 9. Comply with the requirements of MNDOT Standard Spec. Table 2575-1 for season of planting native seed mixtures. The appropriate
<br /> seeding dates a.e from October 20 to November 15. Dormant seeding will only be allowed if the maximum
<br /> soil temperature at a dates for spring seeding are from April 15 through July 20. Fall seeding dates are from September 20 to October 20. Dormant
<br /> depth of 1 inch does not exceed 40 degrees Fin order to prevent germination. When the dates in the seasonof planting prohibit seeding dates are from October 20 to November 15. Dormant seeding will only be allowed if the maximum soil temperature at a MATE R I A L S :
<br /> seeding of the permanent seed mixture, apply temporary seeding and mulch in order to comply with the requirements of the GENERAL depth of 1 inch does not exceed 40 degrees Fin order to prevent germination. When the dates in the season of planting prohibit
<br /> STORMWATER PERMIT FOR CONSTRUCTION ACTIVITY and then apply permanent seeding at a later date. seeding of the permanent seed mixture, apply temporary seeding and mulch in order to comply with the requirements of the GENERAL 1. Storm Sewer Inlet Protection (areas with pedestrian or vehicle traffic): Emergency overflow is required. Take care to protect the catch
<br /> STORMWATER PERMIT FOR CONSTRUCTION ACTIVITY and then apply permanent seeding at a later date. basin curb-box from additional sediment escaping over the top of these devices while still allowing for emergency overflow.
<br /> 6. Maintenance of Areas Planted With Native Seeds: To reduce weed establishment, mow 2 to 3 times (30 days apart) during the first
<br /> year with the mower deck about 6" - 8" off the ground. Mow one time during the 2nd year before weeds set their seeds. Mow 10.Maintenance of Areas Planted With Native Seeds: To reduce weed establishment, mow 2 to 3 times (30 days apart) during the first a. Road Drain Curb & Gutter: With replaceable filter sock. Manufactured by WIMCO, 799 Theis Drive, Shakopee, MN 55379, Phone
<br /> once every 3 to5 years following the initial 2 years of maintenance in order to remove dead plant material and stimulate new seed. year with the mower deck about 6" - 8" off the ground. Mow one time during the 2nd year before weeds set their seeds. Mow (952) 233-3055, (www.roaddrain.com).
<br /> once every 3 to 5 years following the initial 2 years of maintenance in order to remove dead plant material and stimulate new seed.
<br /> 7. In areas to be permanently stabilized, landscape with decorative rock, plantings, and sod. Refer to the approved Landscape Plan for b. Silt Sack: Type B, regular flow (50 gpm/ft2), with curb deflector as required. Rectangular siltsack on rectangular inlets. Round
<br /> design and details. The Projects Landscape Plan is part of the SWPPP for soil stabilization. Amendments to the Landscape Plan shall siltsack on round inlets. Manufactured by ACF ENVIRONMENTAL, 2831 Cardwell Road, Richmond, VA 23234, Phone (800) 448-3636,
<br /> be approved by the Owner and documented as part of the SWPPP. (www.ocfenvironmental.com).
<br /> 8. Reinforce the pond overflow swale with Landlok TRM 450 turf reinforcement mat, or approved equal. Install the mat in accordance with c. Dandy Sack: With curb filter as required. Manufactured by DANDY PRODUCTS, 1095 Harcourt Road, Mount Vernon, OH 43050,
<br /> the manufacturer's recommendations. Phone (800) 591-2284, (www.dandyproducts.com).
<br /> 9. In seeded areas with slopes equal to or flatter than 4:1, apply MNDOT Standard Spec. 3882 Type 1 mulch uniformly over the soil d. Dandy BOO: With curb filter as required. Manufactured by DANDY PRODUCTS, 1095 Harcourt Road, Mount Vernon, OH 43050,
<br /> surface by hand or achine within 24 hours after seeding in accordance with MNDOT Standard Spec. 2575.3. Apply mulch at a rate Phone (800) 591-2284, (www.dandyproducts.com).
<br /> of 2 tons per and not less than 80% coverage. Immediately after placement, anchor all mulch material into the soil by crimping INSPECTIONS AND MAINTENANCE REQUIREMENTS :
<br /> (straight disking)c in a direction perpendicular to that of the overland storm water flow. Punch the mulch into the soil to a depth of 2 e. 5ediguard Filter: With Sediguard curbguard as required. Available from ERO-TEX, N94 W14330 Gar-win Mace Drive, Menomonee Falls, /' �Y
<br /> to 3 inches with a disk spacing of 8" or less. 1. Inspect the entire construction site at least once every 7 days during active construction and within 24 hours after a rainfall event WI 53051, Phone (866) 437-6839, (www.ero-tex.net). 7 \
<br /> 10.In seeded a with to steeper than 4:1, install biodegradable e control blankets uniform) over the soil surface b hand greater than 0.5 inches in a 24-hour period. Following an inspection that occurs within 24 hours after a rainfall event, the next L Sunde
<br /> slopes per gra y o y inspection must be conducted within 7 days after that rainfall event. Rainfall amounts must be obtained by a properly maintained rain 2. Storm Sewer Inlet Protection (areas with no pedestrian or vehicle traffic): Emergency overflow is required. Take care to protect the / 1
<br /> within 24 hours after seeding in accordance with manufacturers recommendations. Use MNDOT Standard Spec. 3885 Straw 2S-natural gauge installed onsite, a weather station within 1 mile of the site, or a weather reporting system that provides site specific rainfall catch basin curb-box from additional sediment escaping over the top of these devices while still allowing for emergency overflow. En Ineerin
<br /> netting, or Wood Fiber 2S-natural netting type blanket. s data from radar summaries. O 9 9,Pu
<br /> Road Drain Too Slab: Model RD 23 (fits rough opening for 2'x3' inlet), Model RD 27 (fits rough opening for 27" inlet), or Model
<br /> 11.In seeded ditches, install biodegradable a control blankets uniformly over the soil surface by hand within 24 hours after seeding 2. Inspect all erosion prevention and sediment control BMPs, inlet protection, infiltration areas, and stabilized areas. a. CG 3067 (fits Neenah Casting with 35-1/4%17-3/4" dimensions). Manufactured by WIMCO, 799 Theis Drive, Shakopee, MN, 55379,
<br /> in cordon with manufacture recommendations. Use MNDOT Standard Spec. 3885 Coconut 2S natural netting, or Wood Fiber HV Phone (952) 233-3055, www.roaddrain.com. Do not use in public right-of-way. lalY
<br /> 2S-natural netting type blanket.manufacturers 3. Inspect surrounding properties for evidence of off site sediment accumulation.
<br /> b. InfraSafe Sediment Control Barrier: Install geotextile sock on the outside of the barrier in order to trap additional fines. CONSeaorvese rrULTING IVVL EE Go/NEERS
<br /> 12.Erosion Control Blanket Installation: Lay the blanket parallel to the direction of water flow with the netting on the top. Spread the 4. Inspect portable toilets for damage, leaks, and spills as part of the weekly storm water site inspection. Standard frames are available to fit 24"to 30"diameter and 2'x3' openings. Distributed by ROYAL ENTERPRISES AMERICA, 30622
<br /> blankets evenly without stretching so that fibers a n direct contact with the soil. Overlap adjacent strip edges 2 - 4 Inches. Forest Boulevard, Stac MN, 55079, Phone (651) 462-1766, (www.ro aenter Do not use bit right-of-way. UTH
<br /> BL lasz�eei�r"xal�[�[arvonaE �
<br /> Overlap strip ends a of 10 inches with the upgrade strip on top. Bury the upstream end of each blanket at least 6 inches 5. Record all inspections and maintenance conducted during construction in writing and keep these records with the SWPPP. The Y y prises.com). n public 1.2)991-Ie13 FAX
<br /> in a vertical trench with thesoil pressed firmly against the embedded mat. Install additional check trenches at 50 foot intervals. inspections and maintenance records must include date and time of inspections, date and amount of all rainfall events greater than `w'".'a"a°°'"r"°m
<br /> Staple strip ends and end overlaps with not more than 12 inches between staples. Staple all other joints and edges at 2 foot ecommcorrectivec. Rock Snake/Rock Sock/Rock Log/Rock Tube: Use only for inlets after pavement is in place. Silt Sifter Tubes distributed by
<br /> m 0.5 inches in a 24-hour period, name of persons(s) conducting inspections, findings of inspections, recommendations for
<br /> intervals. Place additional staples down the center of each blanket in a diamond pattern at a maximum of 2 foot intervals. Insert all actions, and any corrective actions taken. WESTERN FIBER COMPANY, PO Box 22665, Bakersfield, CA 93390, Phone (661) 854-5556, (www.westernfiber.com). Do not use in
<br /> staples flush with the ground surface. Staples shall be 11 gauge or heavier "U shaped with a1 xm 2 inch crown. Staple length public right-of-way.
<br /> shall be 10 inches. 6. Record, describe, and photograph all points of discharge observed during inspection.
<br /> 3. Topsoil: Topsoil used for finish grading of areas to be turfed or planted shall meet the requirements of MNDOT Standard Specification
<br /> 13.Wintering: Snow mulching consists of mulch material spread over the top of snow so that mulch materials melt through the 7. Inspect all a prevention and sediment control BMPs in order to integrity and effectiveness. Re 3877 far topsoil borrow modified to contain n e than 35% sand. Topsoil shall be reasonably free of subsoil, heavy clay, coarse
<br /> snow and stick to the exposed soils. Frozenground mulching consists of mulch materials spread over frozen ground. Mulch materials Pena erosion prever ensure n as ysoan asPair, reaacocesso supplement sand, stones, and other over 51 mme more
<br /> n diameter; and withoutplants,eroots, sticks, and other objectionable mateal. I
<br /> p g pr any nonfunctional BMPs with functional BMPs within 24 hours after discovery, or field conditions allow unless objects (2inches) 1
<br /> that do not require disc-anchoring into the soil may be placed without modification. Mulch materials that require disc-anchoring may another time frame is specified.
<br /> be anchored with hydraulic soil stabilizers or may be frozen to the soil by applying water at a rate of 2000 gallons per acre over the 4. Mulch: MNDOT Standard Specification 3882 Type 1 mulch material.
<br /> mulch as a substitution for disc-anchoring. 8. Maintenance is critical to the proper function of erosion and sediment control devices. Remove accumulated sediment deposits from
<br /> behind e and sediment control devices asneeded. Repair, replace, orsupplement all perimeter control devices when they become 5. Draintile: Perforated under-drains shall be slotted single wall corrugated HDPE. Install draintile with high permittivity circular knit
<br /> 14.Mulch, hydro-mulch, and tackifiers may not be used for stabilization in swales or drainage ditches. erosion polymeric filament filter sock per ASTM D6707-01. Mn Dot 3733 Type I sewn seam non-woven fabric shall not be used. CO
<br /> nonfunctional or the sediment reaches 1/2 of the height of the device. These repairs must be made within 24 hours of discovery, or
<br /> as soon as field conditions allow access. Repair, replace, or supplement deteriorated, damaged, rotted, or missing erosion control
<br /> 15.Rapid Stabilization: In order to prevent off site sedimentation and comply with the GENERAL STORMWATER PERMIT FOR CONSTRUCTION devices within 24 hours of discovery, or as soon as field conditions allow access. 6. Geotextile Fabric for Subgrade Stabilization (if required): MNDOT Standard Specification 3733 Type V permeable geotextile material.
<br /> ACTIVITY, use rapid stabilization methods to rapidly stabilize small critical areas (up to 2 acres) within 200 ft of surface waters. The z
<br /> work may be performed numerous times during the Contract and may be conducted on eral small areas that may or may not be 9. Clean sedimentation basins, storm sewer catch basins, ditches, and other drainage facilities as required in order to maintain their 7. Supporting Posts for Siltfence: 51 mm (2 inch) square or larger hardwood, pine, or standard T- or U-section steel posts. T- or
<br /> accessible with n mal equipment. This work shall be done in accordance with MNDOT 2575.3 and the applicable details and locations effectiveness. Temporary and permanent sedimentation basins must be drained and the sediment removed when the depth of sediment U-section steel posts shall weigh not less than 1.8602 kg per meter (1.25 lb per lineal foot). Posts shall have a minimum length of
<br /> shown in the plan.The methods may be conducted independently or in
<br /> m
<br /> combination. Rapid stabilization work is incidental to the collected in the basin reaches 1/2 of the storage volume. Drainage and removal must be completed within 72 hours, oro n as 1524 mm (5 feet). Posts shall have projections to facilitate fastening the fabric and prevent slippage.
<br /> erosion control bid item. The materials required shall be as follows: field conditions allow access.
<br /> s Discharge from sedimentation basins must not adversely affect the receiving water or downstream O
<br /> properties. Visually inspect in order to ensure that adequate treatment has been obtained and that nuisance conditions will not result 8. Siltfence Fabric: MNDOT Standard Specification 3886 self supporting silt fence. Furnish in a continuous roll in order to avoid splices.
<br /> • Method 1 (Use on areas 0.5-2 acres with slopes equal to or flatter than 4:1): MNDOT Standard Spec. 3882 Type 1 Mulch ® 2 from the discharge. Record, describe, and photograph any discharge observed during inspections. Geotextile fabric shall be uniform in texture and appearance and have no defects, flaws, or tears. The fabric shall contain sufficient CITY
<br /> tons per acre with disc anchoring. Place mulch to obtain 90% ground coverage. ultraviolet (UV) ray inhibitor and stabilizers to provide a minimum two-year service life outdoors. Fabric color shall be international U SUBMITTAL
<br /> • Method 2 (Use onareas 0.5-2 acreswith slopessteeperthan 4:U: MNDOT Standard Spec. 3882 Type3 Mulch 0 1.5 tons 10.Inspect surface waters (including drainage ditches, gutters, and conveyance systems) for evidence of erosion and sediment deposition. orange.
<br /> per Remove all deltas and sediment deposited. Stabilize areas where sediment removal results in exposed ssolil n Removal and stabilization
<br /> acre with MNDOT3884 Stabilized Fiber Matrix 0 750 pounds per acre. Place mulch to obtain 75% ground coverage. must be completed within 7 days of discovery unless precluded by legal, regulatory, or physical access constraints. If precluded, 9. Aggregate for Temporary Rock Construction Entrance: 25 mm (1 inch) to 50 mm (2 inch) diameter rock, MNDOT Standard Specification 2/14/20
<br /> removal and stabilization must take place within 7 days of obtaining access. 3137 CA-1, CA-2, or CA-3 Coarse Aggregate, or equal.
<br /> • Method 3 (Use on areas 0.5-1.5 acres with slopes steeper than 4:1): MNDOT Standard Spec. 3884 Stabilized Fiber Matrix 0
<br /> 12
<br /> 330 pounds per 1000 gallons of slurry mix. MN state seed mixture 22-111 ® 10 pounds per 1000 gallons of slurry mix. 11.Inspect construction site vehicle exit locations for evidence of off-site sediment tracking onto paved surfaces. Remove all soils and 10.Geotextile Fabric for Temporary Rock Construction Entrance: MNDOT Standard Specification 3733 Type V permeable geotextile fabric
<br /> Type 3 slow release fertilizer 10-10-10 0 50 pounds per 1000 gallons of slurry mix. Water ® 875 gallons per 1000 gallons sediments tracked or otherwise deposited onto adjacent property, pavement areas sidewalks, streets, and alleys. Removal shall be on material.
<br /> of slurry mix. Note: 1000 gallons of slurry mix will cover 1/6 acre. Apply material to obtain 100% ground coverage. a daily basis throughout the duration of the construction. Clean paved roadways by shoveling or wet-sweeping. Do not dry sweep. If O
<br /> necessary, scrape paved surfaces in order to loosen compacted sediment material prior to sweeping. Haul sediment material to a 11.ALcgregate for Block and Rock Sediment Filter: 25 mm (1 inch) to 50 mm (2 inch) diameter rock, MNDOT Standard Specification 3137
<br /> • Method 4 (Use on areas up to 800 square yards with slopes between 2:1 and 4:1 or ditches with grades steeper than 4%): suitable disposal area. Street washing is allowed only after sediment has been removed by shoveling or sweeping. CA-1, CA-2, or CA-3 Coarse Aggregate, or equal.
<br /> MNDOT Standard Spec. 3885 Category 3 Erosion Control Blanket. MN state seed mixture 22-111 ® 2 pounds per 100 squareLL
<br /> yards. Fertilizer 10-10-10 ® 8 pounds per 100 square yards. 12.Inspect all infiltration areas in order to ensure that no sediment from ongoing construction activity is reaching the infiltration areas and 12.Block and Rock Inlet Filters: Block and Rock Inlet Filters consist of open-core concrete masonry blocks, wire screen with 12 mm (0.5
<br /> that these areas are protected from compaction due to construction equipment driving across the infiltration areas. inch) openings, and washed rock. Place open-core concrete masonry blocks lengthwise on their sides around the catchbasin inlet.
<br /> • Method 5: Rip Rap Class II with Geotextile Type III. Place wire screenround the perimeter to the top of the block barrier before the rock is placed. The screen
<br /> en acts to prevent the
<br /> 13.Perform any corrective measures ordered by the City, Watershed District, or the Minnesota Pollution Control Agency within 24 hours of rocks from being washed through the blocks. Place rock against the wire mesh to the top of the blocks. Use 25 mm (1 inch) to I HEREBY CERTIFY THAT THIS PLAN,
<br /> notification. Install any additional erosion protection or sediment control measures deemed necessary by the City, Watershed District, or 50 mm (2 inch) diameter rock, MNDOT Standard Specification 3137 CA-1, CA-2, CA-3, or equal Coarse Aggregate. Install two SPECIFICATION,OR REPORT WAS PREPARED
<br /> the Minnesota Pollution Control Agency within 24 hours of notification. ME OR UNDER MY DIRECT SUPERVISION
<br /> courses of 8" blocks in order to form a barrier height Of 16".14.Account for and document inthe SWPPP all soil hauled from the site, its final destination, storage, and method of stabilization. O AND THAT IAMADULY LICENSEDPROFESSIONAL ENGINEER UNDER THE LAWS
<br /> 13.Concrete Block for Block and Rock Inlet Filter: Standard units with nominal face dimensions of 16 x 8 inches. Minimum 8 inches OF THE STATE OF MINNESOTA.
<br /> 15.Where parts of the project site have permanent cover, but work remains on other parts of the site, inspections of the areas with nominal depth.
<br /> permanent cover may be reduced to once per month. 7
<br /> POLLUTION PREVENTION MANAGEMENT MEASURES : 14.Wire Screen for Block and Rock Inlet Filter: 12 mm (0.5 inch) openings L
<br /> 16.If permanent cover is established on all exposed soil areas and no construction activity is occurring anywhere on the site, inspect the Mike R.Keller
<br /> 1. Solid Waste: Dispose of collected sediment, asphalt and concrete millings, floating debris, paper, plastic, fabric, construction and site during non-frozen ground conditions at least once per month for a period of twelve (12) months. Fallowing the twelfth month of 15.Bales: Tightly bound bales of unrotted hay, straw, or other grass locally available from recent cuttings. DATE:2/14/20 REG.NO.: 40425
<br /> demolition debris, and other wastes properly off-site in compliance with Minnesota Pollution Control Agency requirements. permanent cover and no construction activity, inspections may be terminated until construction activity resumes.
<br /> 16.Bale Anchor Posts: 12.7 mm (0.5 inch) diameter steel reinforcing rods, or 51 mm (2 inch) square hardwood or pine wooden stakes.
<br /> 2. Hazardous Materials: Properly store oil, gasoline, paint and any hazardous substances in order to prevent spills, leaks or other Posts shall have a minimum length of 762 mm (30 inches) plus burial depth. Two posts per bale.
<br /> discharge, and contact with stormwater runoff. Include secondary containment. Restrict access to storage areas in order to prevent
<br /> vandalism. Storage and disposal of hazardous materials must be in compliance with MPCA regulations. 17.Supporting Posts for Culvert. Flared End Section, and Ditch Protection: 100 mm (4 inch) diameter wood posts, or standard steel fence
<br /> posts weighing not less than 0.59 kg (1.3 lbs.) per lineal foot. Posts shall have a minimum length of 762 mm (30 inches) plus
<br /> 3. Other Materials: Dispose of unused building materials, garbage, trash, cleaning wastes, toxic materials, and wastewater properly off-site burial depth.
<br /> and in compliance with Minnesota Pollution Control Agency disposal requirements.
<br /> 18.Temporary Seed: MNDOT Standard Spec. 3876. MN state seed mixture 32-241 or 22-112.
<br /> 4. Furnish suitable covered watertight trash containers and regularly remove the accumulated trash from the premises. Da not place Issues
<br /> dumpsters near drainage inlets or receiving waters. 19.Fertilizer: MNDOT Standard Spec. 3881 Type 1-Commercial Fertilizer or Type 3-Slow Release Fertilizer. and
<br /> 5. Do not allow solid waste, hazardous materials, materials with the potential to leach pollutants to be carried by runoff into a receiving 20.Biodegradable Erosion Control Blankets: In accordance with MNDOT Standard Specification 3885. Revisions:
<br /> water or storm sewer system. Store all materials in a manor to prevent and minimize contact with stormwater runoff.
<br /> 6. Limit external washing of trucks and other construction vehicles to a defined a of the site. Wash vehicles 21.Erosion Control Matting: LandLok TRM 450 Turf Reinforcement Mat manufactured by Propex, Inc. (www.goeotextile.com), or approved
<br /> stabilized with stone that drains into an o d sediment trappingdevice. Contain runoff and dispose on of waste.or Engineequal soil erosion control matting.
<br /> approve propery pose
<br /> degreasing is prohibited. 22.Staples: Staples used to anchor erosion control blankets shall be U-shaped, 3 mm diameter or heavier steel wire. The span width at
<br /> 7. Concrete Washout Operations: Contain all liquid and solid wastes generated by concrete washout operations in a leak-proof the crown shall be a minimum of 25 mm (1 inch). Staples shall have a length of 250 mm (10 inches) or more from top to bottom
<br /> containment facility orimpermeable liner. Self-contained concrete washouts on
<br /> concrete delivery trucks areacceptable alternative after bending.
<br /> to on-site containment. Do not allow the liquid and solid wastes to contact the ground. Prevent runoff from the concrete washout
<br /> operations or a Pay close attention to the level of concrete in the washout area before each use. Dispose of liquid and solid 23.BioLogs: Curlex Sediment Log, as manufactured by American Excelsior Company (www.curlex.com), or approved equal. Excelsior fibers
<br /> wastes properly in compliance with Minnesota Pollution Control Agency regulations. Install a sign adjacent to each washout facility in shall be weed seed free,TYPE III 9-inch (23-cm) diameter. Excelsior color shall be standard (natural). Netting at each end of the
<br /> order to inform concrete equipment operators to utilize the proper facilities. log shall be secured to assure fiber containment.
<br /> 8. Sanitary and Septic Waste: Furnish and install detached portable toilet facilities at the construction site. The portable toilets shall be 24.Inflatable Sewer Pipe Plugs: Manufactured by Petersen Products Company, 421 Wheeler Avenue, Fredonia, Wisconsin 53021, Phone (262)
<br /> conveniently
<br /> located for the useof all workers on the project. Maintain the facilities in clean, dry, sanitary condition in accordance 692-2416, www.petersenproducts.com.
<br /> with Minnesota Department of Health requirements. Keep portable toilets at least 20 feet away from any water body and 10 feet from
<br /> curb and gutter or storm sewer inlet. Position facilities and/or stake them down so that they may not be tipped or knocked over.
<br /> Owner identificotion and contact information shall be displayed in a prominent location on each unit.
<br /> 9. Fueling and Vehicle Maintenance Areas: Conduct vehicle fueling and maintenance in ways to prevent spilling or leaking. Use drip pans,
<br /> absorbents, designated concrete areas with secondary containment, etc. as necessary to prevent discharge of fuel and chemicals.
<br /> 10.Emergency Spill Station: Provide an emergency spill station with necessary containment and cleanup devices for all workers to access.
<br /> Provide signage in order to make the Emergency Spill Station visible in the field and note the location on the SWPPP. STORMWATER
<br /> FINAL STAB I L I Z A T I O N
<br /> 11.Process water such as power washing water and concrete cutting effluent, among others, must be collected for treatment and disposal.
<br /> Do not allow process water to be flushed into the site storm sewer system or to be discharged off site. 1. Complete all soil disturbing activities at the site and stabilize all soils by a uniform perennial vegetative cover with a density of 70% POLLUTION
<br /> over the entire pervious surface area, or other equivalent means necessary in order to prevent soil failure under erosive conditions.
<br /> 12.Sedimentation Treatment Chemicals: If the contractor intends to use polymers, flocculants, or other sedimentation treatment chemicals
<br /> on the project site, the contractor must comply with the following minimum requirements: 2. Verify that the permanent stormwater treatment system is completed in accordance with the design and specifications. The permanent PREVENTION PLAN
<br /> stormwater treatment system must meet all of the requirements of the General Stormwater Permit for Construction Activity. This
<br /> a. The contractor must use conventional erosion and sediment controls prior to chemical addition to ensure effective treatment. includes but is not limited to a final clean out of temporary or permanent sedimentation basins that are to be used as permanent
<br /> Chemicals may only be applied where treated storm water is directed to a sediment control system that allows for filtration or water quality management basins and final construction or maintenance of infiltration basins. Remove all sediment from conveyance
<br /> settlement of the floc prior to discharge. systems. Stabilize all ditches with permanent cover.
<br /> b. chemicals must be selected that are appropriately suited to the types of soils likely to be exposed during construction, and to the 3. Remove all temporary synthetic and structural erosion prevention and sediment control BMPs (such as silt fence) prior to submission of
<br /> expected turbidity, pH, and flow rate of storm water flowing into the chemical treatment system or area. the Notice of Termination. BMPs designed to decomposen site (such as some compost logs) be left place.
<br /> gone oomposmay n
<br /> c. Chemicals must be used in cordance with accepted engineering practices, and with dosing specifications and sediment removal 4. Submit notice of termination (NOT) to the MPCA within 30 days after all activities required for final stabilization are complete.
<br /> design specifications provided by the manufacturer or provider/supplier of the applicable chemicals.
<br /> SHEET
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