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HomeMy WebLinkAboutDrainage Reports - 08/23/2013' City of Ft. Approved I EROSION CONTROL REPORT BIG DEAL FOUR PLEX ' Fort Collins, Colorado U 1 Prepared for: ' Big Deal Real Estate Inc. 2519 Ridge Creek Road ' Fort Collins, CO 80528 Prepared by: ■ ■� (NORTHERN ENGINEERING ■ 200 South College Avenue, Suite 10 Fort Collins, Colorado 80524 1 Phone: 970.221.4158 Fax: 970.221.4159 w,vw.northemengineering.com This Report is consciously provided as a PDF. ase consider the environment before printing this document in its entirety. Project Number: 876-001 ien a hard copy is absolutely necessary, we recommend double -sided printing. NorthernEnaineerina.com 11 970.221.4158 I 1 NORTHERN ENGINEERING 1 July 26, 2013 1 City of Fort Collins Stormwater Utility 700 Wood Street Fort Collins, CO 80521 1 1 1 1 1 1 1 1 1 1 1 1 ADDRESS: PHONE:970.221.4158 : 200 S. College Ave. Suite 10 WEBSITEWEBSITEnengi reedng.com Fart Collins, CO 80524 FAX: 970.221.4159 RE: Erosion Control Report for Big Deal Four Plex Dear Staff, Northern Engineering Services, Inc. is pleased to submit this Erosion Control Report (ECR) for Big Deal Four Plex. The objectives of this Erosion Control Report (ECR) are to identify potential sources of pollution resulting from the construction activity associated with the site improvements described herein and recommend Best Management Practices (BMPs) that can be used to reduce or eliminate the likelihood of these pollutants entering stormwater discharges from the site. If you should have any questions or comments as you review this report, please feel free to contact us at your convenience. Sincerely, NORTHERN ENGINEERING SERVICES, INC. xg# James Prelog, P.E. Project Engineer ' NORTHERN ENGINEERING 1 1 1 1 1 1 TABLE OF CONTENTS Vicinity Map 1.0 General Requirements..............................................................................................1 1.1 Objectives ...............................................................................................................1 1.2 Definitions..............................................................................................................1 2.0 Narrative Site Description.........................................................................................2 2.1 Existing Site Description............................................................................................2 2.2 Wind and Rainfall Erodibility.....................................................................................2 2.3 Nature of Construction Activity...................................................................................2 2.4 Sequence of Major Activities......................................................................................2 2.5 Site Disturbance......................................................................................................2 2.6 Existing Data...........................................................................................................3 2.7 Potential Pollution Sources........................................................................................3 2.8 Receiving Waters.....................................................................................................3 Figure 1 — Existing Drainage and Irrigation Infrastructure.....................................................................4 3.0 Stormwater Management Controls.............................................................................5 3.1 Best Management Practices (BMPs) for Stormwater Pollution Prevention ..........................5 3.2 Structural Practices for Erosion and Sediment Control....................................................5 3.3 Non -Structural Practices for Erosion and Sediment Control.............................................7 3.4 Phased BMP Installation...........................................................................................7 3.5 Material Handling and Spill Prevention........................................................................8 3.6 Waste Management and Disposal...............................................................................8 4.0 Final Stabilization and Long -Term Stormwater Management.......................................10 4.1 Final Stabilization..................................................................................................10 4.2 Long -Term Stormwater Management.........................................................................10 5.0 Inspection and Maintenance...................................................................................11 5.1 BMP Inspection.....................................................................................................11 5.2 BMP Maintenance.................................................................................................11 References 12 Stormwater Management Plan NORTHERN ENGINEERING LIST OF TABLES: Table 1 — Construction Schedule........................................................................................... 5 ' APPENDICES: APPENDIX A — Grading and Erosion Control Plan ' APPENDIX B — Erosion Control Details APPENDIX C — Landscape Plan Stormwater Management Plan ■V NORTHERN ENGINEERING Big Deal Four Ple 1.0 General Requirements ' 1.1 Objectives The objectives of this Erosion Control Report (ECR) are to identify potential sources of pollution ' resulting from construction activity associated with the site improvements described herein and recommend Best Management Practices (BMPs) that can be used to reduce the pollutants in stormwater discharges from the site. The ECR must be completed and implemented at the time the project breaks ground and revised as necessary, while construction proceeds, to accurately reflect the conditions and practices at the site. 1.2 Definitions Best Management Practices (BMPs) — BMPs encompass a wide range of erosion and sediment control practices, both structural and non-structural in nature, which are intended to reduce or eliminate potential water quality impacts from construction site stormwater runoff. Erosion Control BMPs — These practices are intended to prevent the erosion of soil. A few common examples include: minimizing the amount of disturbed area through phasing, temporary stabilization and preserving existing vegetation. Sediment Control BMPs — These practices are designed to remove sediment from runoff. Examples of few include: straw wattles, silt fence and.inlet protection. Non-structural BMPs — These BMPs prevent or limit the entry of pollutants into stormwater at their source through operational or managerial techniques. Some examples include: the preservation of natural vegetation, preventive maintenance and spill response procedures. Structural BMPs— Structural practices are designed to control on -site erosion and prevent sediment from migrating within the project site as well as off -site during construction. This type of BMP includes physical processes ranging from diversion structures to inlet protection and silt fence. Erosion Control Report 1 ' NORTHERN ENCINEERI NO Big Deal Four Plea 2.0 Narrative Site Description 2.1 Existing Site Descriotion The project site is located in the Northeast Quarter of Section 14, Township 7 North, Range 69 ' West of the 6`h Principal Meridian, City of Fort Collins, County of Larimer, State of Colorado. More specifically, the project is located at 621 South Meldrum Street. The project site is bordered to the north and south by single-family homes; to the east by Meldrum Street (100' Right -of -Way); and to ' the west by an existing alley (20' Right -of -Way). The existing site improvements include: one single-family home which fronts to Meldrum Street, a detached garage and a small shed. The existing ground cover consists of several mature trees, ' grass, weeds and bare soil. 2.2 Wind and Rainfall Erodibility ' The site is located within a moderate risk Erodibility Zone per the City of Fort Collins Wind Erodibility Map. According to the Natural Resources Conservation Service website - www,websoiisurvey,nres.usda.gov, the applicable soil erosion factor (K), which indicates the susceptibility of a soil to sheet and rill erosion, is 0.28. This value is indicative of soils moderately susceptible to rainfall erosion. ' Impervious area (i.e., roof area, concrete walks and asphalt parking area) and landscaping will permanently stabilize the areas disturbed by the proposed construction activity; therefore, the likelihood of erosion and sediment problems occurring on -site is minimal. Most of the proposed ' landscaped area will be situated between the proposed structure and asphalt parking area. During the interim period, in which the disturbed areas are open, the BMPs described herein were selected to prevent erosion and limit sediment migration. 2.3 Nature of Construction Activity The proposed Big Deal Four Plex project will include a two-story building with four units and a ' footprint of approximately 2570 sq. ft. The other major proposed improvements include: a new asphalt parking area and updated landscaping. ' 2.4 Sequence of Maior Activities To complete the project, many basic construction activities will take place. The project will begin by removing the existing site improvements such as the existing single-family home. The installation, removal/replacement, or re-routing of existing utilities (e.g., electric, gas, sanitary sewer, domestic water and storm drain) will occur next. While building foundations are being constructed, concrete barrier curbs will be installed around the parking area. The asphalt paving in the parking area will ' likely follow completion of exterior construction. The fine grading of the landscaped areas and the installation of retaining walls and landscaping will mark the completion of the construction activities. ' 2.5 Site Disturbance The project site is approximately 0.22 acre in size. The area that will be disturbed by construction activity is 0.22 acre. Erosion Control Report ' NORTHERN ENGINEERING Bid Deal Four P 1 2.6 Existine Data ' In order to complete the associated construction plans, a topographical survey of the site was completed. The survey consisted of field measurements made by Northern Engineering Services, Inc. in November 2012. ' The site -specific subsurface exploration was performed by Soilogic, Inc. Detailed results from this work are contained in the Geotechnical Subsurface Exploration Proposed Multi -Family 4-plex ' Residence 621 South Meldrum Street Fort Collins, Colorado (Soilogic Project # 12-1094) dated November 28, 2012. 2.7 Potential Pollution Sources ' As is typical with most construction sites, there are a number of potential pollution sources which could affect water quality. It is not possible for this report to identify all the materials that will be ' used or stored on the construction site. It is the sole responsibility of the contractor to identify and properly handle materials that are potential pollution sources. The following are some common examples of potential pollution sources: ' • Exposed and stored soils • Vehicle tracking of sediments • Management of contaminated soils ' Outdoor storage of building materials, fertilizers, chemicals, etc. • Vehicle and equipment maintenance and fueling ' Significant dust or, particulate generating processes • Routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc. • On -site waste disposal practices (waste piles, dumpsters, etc.) • Concrete truck/equipment washing, including the concrete truck chute and associated fixtures and equipment ' • Dedicated asphalt and concrete batch plants • Non -industrial waste sources such as worker trash and portable toilets ' • Other areas or procedures where potential spills can occur Management of Contaminated Soils: We are not aware of on -site contaminated soils. However, the ' contractor should conduct a thorough, pre -construction environmental site assessment. If contaminated soils are discovered, the contractor will identify appropriate practices and procedures for the specific contaminants discovered on -site. ' Loading and Unloading Operations: During site demolition, material loading and unloading will occur on -site. As site development and building construction progresses, space constraints will limit the number of on -site locations for loading and unloading activities. The contractor will be ' responsible for the proper handling and management of pollution sources during loading and unloading operations. Dedicated Asphalt and Concrete Batch Plants: Neither a dedicated asphalt or concrete batch plant will be constructed on -site. 2.8 Receiving Waters The excess stormwater runoff from the project area generally sheet flows to existing stormwater Erosion Control Report NORTHERN ENGINEERING Deal Four Plex infrastructure along well established drainage paths. More specifically, the excess runoff from disturbed area on the east side of the project site enters the curb and gutter in Meldrum Street and flows north to an existing combination inlet (refer to Figure 1). This inlet is connected to an existing storm drain system that outfalls into the Udall Natural Area. Stormwater flows from downtown and nearby neighborhood storm drains flow into this system, which then drains into a series of ponds (i.e., Udall Natural Area), before entering the Poudre River. Excess runoff from west portion of the project site will flow into the Arthur Ditch. ij Figure 1 — Existing Drainage and Irrigation Infrastructure Erosion Control Report a ' NORTHERN ENGINEERING Big Deal Four Plex 3.0 Stormwater Management Controls ' 3.1 Best Management Practices (BMPs) for Stormwater Pollution Prevention Best Management Practices (BMPs) are loosely defined as a method, activity, maintenance procedure or other management practice for reducing the amount of pollution entering a water body. The term originated from rules and regulations in Section 208 of the Clean Water Act. ' Starting with mobilization, and throughout the entire construction of the buildings, erosion control devices should be installed and maintained to minimize pollutant migration. The BMPs may be installed or implemented in phases, or not at all, depending on actual conditions encountered at the site. It is the responsibility of the contractor to make the determination as to what practices should be employed and when. In the event that a review agency deems BMPs to be insufficient, it shall be the responsibility of the contractor to implement modifications as directed. ' Table 1 (see below) depicts the construction sequence and associated BMPs. The Erosion Control Static Site Plan (Refer to sheet C6.O0 in Appendix A) illustrates the assumed location for each of the BMPs. Details for recommended BMPs are included in Appendix A. These details should be ' used for additional information on installing and maintaining the BMPs described herein. 3.2 Structural Practices for Erosion and Sediment Control . ' Structural BMPs are physical devices that prevent or minimize water quality impacts associated with construction site stormwater runoff. These devices can be temporary or permanent, and the installation of individual components will vary depending on the stage of construction. Again, the final determination for which BMPs will be installed, where they will be located and when they will be installed shall be made by the contractor. Silt Fencing (Phases I - IV) Silt fencing shall be provided to prevent migration of sediment off -site into the public right- of-way and onto neighboring properties. All silt fencing shall be installed prior to any land disturbing activity (i.e., stockpiling, stripping, grading, excavation, earthwork activities, etc.). The silt fence inspections should identify tears or holes in the material as well as check for slumping fence or undercut areas that allow flows to bypass the fencing. The damaged sections of fencing should be repaired or replaced. Sediment accumulations equal to or greater than six inches behind the silt fence should be removed to maintain BMP effectiveness. At a minimum, it is suggested that silt fencing shall be located along the north and south property lines of the disturbed area to prevent sediment from leaving the site and entering the neighboring properties. Additionally, silt fence should be installed along the east property line. This section of silt fence should prevent sediment from entering Meldrum Street, the public Right -of -Way (ROW). Vehicle Tracking Control Pads (Phases 1 -II) Vehicle tracking control pads shall be provided to minimize tracking of mud and sediment onto paved surfaces and neighboring roadways. All vehicle tracking control pads shall be installed prior to any land disturbing activity (e.g., stockpiling, stripping, grading, etc.). The vehicle tracking control pads should be located at all existing and future vehicle accesses being used during construction phases I and II. These locations will primarily be dictated by gates or openings in the temporary construction fencing. Erosion Control Report 5 NORTHERN ENGINEERING Big Deal Four Plex Vehicle tracking pads should be inspected for degradation. The aggregate material should ' remain rough and be replaced if the area becomes clogged with water and/or excess sediment. Area Inlet Protection (Phases II - IV) The TenCate Mirafi Dandy Sack (or approved equal) area Inlet Filter (IF) should be installed in the existing area inlet located west of the project site in the alley. Inlet Protection OP) ' should be placed around the two proposed Nyloplast 12" Standard Grates. Installing these BMPs after utility construction is complete should prevent sediment from entering the proposed and public storm drain systems and the Arthur Ditch. ' The area inlet protection should be inspected regularly and maintained as necessary. It will be left to the discretion of the contractor as to when maintenance or replacement is necessary. The contractor is encouraged to follow the manufacturer recommendations. ' Sediment Control Log — aka "Straw Wattles" (Phases I - IV) A Sediment Control Log is a linear roll made of natural materials, such as straw, coconut ' fiber or other fibrous material trenched into the ground and anchored with a wooden stake. Sediment Control Logs can be used as perimeter control for stockpiles, as check dams in small drainage ways (e.g., swales) or on disturbed slopes to shorten flow lengths. If the ' wattles are weighted, they can be used as part of an Inlet Protection OP) design. Sediment Control Logs should be inspected for excess sediment accumulation. The sediment should be removed prior to reaching half the height of the log. ' At a minimum, Sediment Control Logs should be used around soil stockpiles and for inlet protection in unpaved areas of the site. Straw wattles are proposed at the downstream end (or upstream end of the metal sidewalk culverts) of the north and south swales. ' Rock Socks (Phases I - IV) Rock socks are proposed along the west curbline of Meldrum Street (i.e., at the downstream ' end of each metal sidewalk culvert) to reduce the velocity of water leaving the project site and introduce another opportunity for sediment removal. Rock sock heights should allow for pools to develop upstream, creating minor backwaters to both reduce velocities and to allow ' sediment deposition. The rock socks should be spaced so that the top of each dam is equal in elevation to the toe of the next upstream check dam. Rock socks should be inspected regularly for gaps or holes which would allow water to pass through the structures untreated. The accumulated sediment should be removed and typically prior to the sediment depth reaching half the height of the check dam. ' At a minimum, rock socks should be installed at downstream end of.each metal sidewalk culvert. Concrete Washout Area (Phases II - III) A concrete washout area may be provided on -site. The washout can be lined or unlined excavated pits in the ground, commercially manufactured prefabricated containers, or above the ground holding areas. The concrete washout must be located a minimum of 400 feet from any natural drainage way or body of water, and at least 1000 feet from any wells or drinking water sources. Washout areas should not be located in an area where shallow groundwater may be present. The contractor shall place a Vehicle Tracking Pad if the selected location for the Concrete Washout Area is detached from pavement. Clear signage identifying the concrete washout should also be provided. Erosion Control Report ■�� NORTHERN ENGINEERING Big Deal Four PIE 1 The Concrete Washout Area should be inspected regularly. Particular attention should be ' paid to signage to ensure that the area is clearly marked. Confirmation that the washout is being used should also be noted to ensure that other undesignated areas of the site are not being used incorrectly as a concrete washout. 1 Permanent/Established Vegetation (Phase IV) Permanent or established vegetation and landscaping is considered a permanent form of sediment and erosion control. Areas where the previous conditions apply will contain sufficient permanent BMPs such as sod or landscape material (e.g., smooth river rock/cobble and wood mulch). 3.3 Non -Structural Practices for Erosion and Sediment Control Non -Structural BMPs are practices or activities that are implemented to prevent erosion from occurring or limit its effects. These BMPs can be a practice resulting in physical changes to the site, such as mulching or slope stabilization. They can also result in behavioral changes on the site, such as changes to construction phasing to minimize exposure to weather elements, or increased ' employee awareness gained through training. Good Housekeepine Practices (Phases I -IV) ' Good housekeeping practices that will prevent pollution associated with solid, liquid, and hazardous construction -related materials and wastes should be implemented throughout the project. Examples of good housekeeping include providing an appropriate location for waste management containers, establishing proper building material staging areas, establishing ' proper equipment/vehicle fueling and maintenance practices. Street Sweeping (Phases I -IV) Street sweeping should be used to remove sediment that has been tracked onto adjacent roadways. Roadways should be inspected at least once a day, and sediment should be removed as needed. A check of the area inlet protection should be completed after sweeping ' to ensure nothing was displaced during sweeping operations. Street sweeping can reduce the sediment washed into the existing storm drain system. Street sweeping may be necessary on the existing hardscape areas which receive runoff from the disturbed areas. . Saw Cutting Pollution Prevention (Phase II) The following protocol is recommended to prevent dust and slurry from asphalt and concrete ' saw cutting activities from migrating into the existing storm drain system. Slurry and cuttings shall be vacuumed during cutting and surfacing operations - Slurry and cuttings shall not remain on permanent concrete or asphalt pavement overnight - Slurry and cuttings shall not drain to any natural or constructed drainage ' conveyance — - Collected slurry and cuttings shall be disposed of in a manner that does not violate groundwater or surface water standards 3.4 Phased BMP Installation It is important to recognize the four (4) major Development Phases as defined by the State of Colorado's Stormwater Discharge Permit (SDP). These four development phases (referred to as Sequencing by the City of Fort Collins) have been distinguished to aid in the appropriate timing of 1 Erosion Control Report 7 NORTHERN ENGINEERING i 0 I installation/implementation of BMPs at different stages of the construction process. These phases are described as follows: Phase / — Grading Stage; BMPs for initial installation of perimeter controls Phase // — Infrastructure Stage; BMPs for utility, paving and curb installation Phase /// — Vertical Construction Stage; BMPs for individual building construction. Phase IV— Permanent BMPs and final site stabilization. The following is a rough estimate of the anticipated construction sequence for site improvements. The schedule outlined below is subject to change as the project progresses and as determined by the contractor. Table 1 - Construction Schedule TASK BEGINNING DATE ENDING DATE BMP - PHASE OF DEVELOPMENT Building Permit TBD TBD I Removal of Existing Improvements TBD TBD I Utility Installation TBD TBD II Building Construction TBD TBD III Final Stabilization TBD TBD IV ' 3.5 Material Handling and SDIII Prevention Potential pollution sources, as discussed in earlier sections, are to be to be identified by the contractor. Spill prevention procedures are to be determined and put in place prior to construction by the contractor. A spill and flooding response procedure must also be determined and put in place prior to construction by the contractor. Additionally, steps should be taken to reduce the potential for leaks and spills to come in contact with stormwater runoff, such as storing and handling toxic materials in covered areas or by storing chemicals within berms or other secondary containment devices. A notification procedure must be put in place by the contractor, by which workers would first notify the site construction superintendent. Depending on the severity of the spill, the site construction superintendent would possibly notify the Colorado Department of Public Health and Environment - Water Quality Control Division, downstream water users or other appropriate agencies. The release of any chemical, oil, petroleum product, sewage, etc., which enter waters of the State of Colorado (which include surface water, ground water and dry gullies or storm sewers leading to surface water) must be reported immediately to the Division's emergency spill reporting line at (877) 518-5608. All spills that will require cleanup, even if the spill is minor and does not need to be reported to the state, should still be reported to the City of Fort Collins Utilities office at 970-221- 6700. 3.6 Waste Management and Disposal Any waste material that currently exists on the site or that is generated by construction will be disposed of in such a manner as to not cause pollutants in stormwater discharges. If waste is to be stored on -site, it shall be in an area located a minimum of 100 feet from all drainage courses. Whenever waste is not stored in a non -porous container, it shall be in an area enclosed by a 12- Erosion Control Report 8 NORTHERN ENGINEERING Plex 11 I 1 inch high compacted earthen ridge or some other approved secondary containment device. The area shall be covered with a non -porous lining to prevent soil contamination. Whenever precipitation is predicted, the waste shall be covered with a non -porous cover, anchored on all sides to prevent its removal by wind and to prevent precipitation from leaching out potential pollutants from the waste. On -site waste disposal practices, such as dumpsters, should be covered or otherwise contained as to prevent dispersion of waste materials from wind. It shall also be the responsibility of the Contractor to maintain a clean jobsite to prevent dispersion of waste material and potential pollutants into adjacent properties or waterways. Erosion Control Report M NORTHERN ENGINEERING Bil? Deal Four Pler ' 4.0 Final Stabilization and Long -Term Stormwater Management ' 4.1 Final Stabilization The pre -disturbance individual plant density is approximately 75 percent. The existing vegetative cover is consistent with the age and upkeep of single-family student housing. Final stabilization with an individual plant density of at least 70 percent of pre -disturbance levels, or equivalent permanent, physical erosion reduction methods will be achieved. The total disturbed area will be permanently stabilized with asphalt, concrete, concrete pavers, roof area and landscaping such as sod and planting beds. It is highly recommended that pre -construction photos be taken to clearly document vegetative conditions prior any disturbance activities. ' 4.2 Long -Term Stormwater Management The primary method of long-term stormwater management will remain unchanged following completion of the proposed improvements. Any waste material that currently exists on the site or that is generated by construction will be disposed of in such a manner as to not cause pollutants in stormwater discharges. If waste is to be stored on -site, it shall be in an area located a minimum of 100 feet from all drainage courses. Whenever waste is not stored in a non -porous container, it shall be in an area enclosed by a 12- inch high compacted earthen ridge or some other approved secondary containment device. The area shall be covered with a non -porous lining to prevent soil contamination. Whenever precipitation is predicted, the waste shall be covered with a non -porous cover, anchored on all sides to prevent its removal by wind and to prevent precipitation from leaching out potential pollutants from the waste. On -site waste disposal practices, such as dumpsters, should be covered or otherwise contained as to prevent dispersion of waste materials from wind. It shall also be the responsibility of the Contractor to maintain a clean jobsite to prevent dispersion of waste material and potential pollutants into adjacent properties or waterways. Erosion Control Report 10 NORTHERN ENGINEERING ' Big Deal Four Plea ' 5.0 Inspection and Maintenance 5.1 BMP Inspection All temporary erosion control facilities shall be inspected at a minimum of once every two (2) weeks and after each significant storm event or snowmelt. Repairs or reconstruction of BMPs, as necessary, shall occur as soon as possible in order to ensure the continued performance of their intended function. I I I I The construction site perimeter, disturbed areas, all applicable/installed erosion and sediment control measures, and areas used for material storage that are exposed to precipitation shall be inspected for evidence of, or the potential for, pollutants entering the drainage system. Erosion and sediment control measures identified herein shall be observed to ensure that they are operating correctly. Particular attention should be paid to areas that have a significant potential for stormwater pollution, such as demolition areas and vehicle entries to the site. 5.2 BMP Maintenance Any BMPs not operating in accordance with this Erosion Control Report must be addressed as soon as possible to prevent the discharge of pollutants. Preventative maintenance of all temporary and permanent erosion control BMPs shall be provided in order to ensure the continued performance of their intended function. Temporary erosion control measures are to be removed after the site has been sufficiently stabilized as determined by the City of Fort Collins. Maintenance activities and actions to correct problems shall be noted and recorded during inspections. Erosion Control Report 11 NORTHERN ENGINEERING Four Plex I U .1 M 1 References 1. Geotechnical Subsurface Exoloration Proposed Multi -Family 4-1plex Residence 621 South Meldrum Street Fort Collins. Colorado, November 28, 2012,Soil Logic, Inc. (Soilogic Project # 12-1094). 2. Urban Storm Drainage Criteria Manual, Volumes 1-3, Urban Drainage and Flood Control District, Water Resources Publications, LLC., Denver, Colorado, Updated November 2010. I Erosion Control Report 12 I i I 1 r L 1 1 Northern Enaineerina.com // 970.221.4158 [] ■y NORTHERN ' ENGINEERING i I 1 1 LI I lu ,-1 I I r 1 r Big Deal Four Plex Big Deal Four Plex Erosion Control Cost Estimate Project Number: 876-001 Location: Fort Collins, CO Date: February 20, 2013 Total Acres: 0.22 Estimated Unit Total EROSION CONTROL MEASURE Units Quantity Price Price Silt Fence L.F. 410 $1.85 $758.50 Straw Wattles (9" x 10' dimension) each 2 $20.00 $40.00 Area Inlet Protection each 2 $75.00 $150.00 Aea Inlet Protection I Mirafi Dandy Sack each 1 $75.00 $75.00 Curb Inlet Protection (w/o grate) each 0 $75.00 $0.00 Curb Inlet Protection (w/grate) each 0 $100.00 $0.00 Rock Sock each 2 $25.00 $50.00 Vehicle Tracking Control Pad each 1 $700.00 $700.00 Sawcutting Pollution Prevention L.F. 325 $1.00 $325.00 Street Sweeping and Cleaning per hour 0 $70.00 $0.00 Vegetate Landscaped Areas acre 0.22 $1,325.00 $291.50 Sub -Total: $2,390.00 1.5 x Sub -Total: $3,585.00 Option 1 1 BMP Costs Amount of security: $3,585.00 Option 2 1 Cost to Re -seed Disturbed acreage Total Acres x $1325/acre: $291.50 Sub -Total: $291.50 1.5 x Sub -Total: $437.25 Cost to Re -seed: $330.00 Option 3 1 Miniumum Escrow Amount Minimum escrow amount: $3,000.00 Final Escrow Amount Erosion Control Escrow: $3,585.00 NOTE: 'Total Acres' represents total disturbed area. 1 2/20/2013 1:55 PIA D:\Proieots\876.001\Drainage\EmionZ79.001_Fm..o .E= Estimate C.= d fly aoosaoaoo©0o 10 0 10 ]D 30 FAIL NF I MN10 � IDh LEGEND: ---- NOW ION PROPOSED PROPERTY UNE FBI CONTOUR 30 PROPOSED CONTOUR - PROPOSED NORMAL CURB AM WTIEn (iMCAL) FASTING CURB AND GUTTER —.� PROPI STORM SEWER M' SMITING TREES EMISTM CONCRETE PNOPOsm coxrnETE PROPOSED ASPHALT MILL AND OVERLAY SILT FENCE M'—O INLET FILTER (MI DANDY SACK OR APPROVED EQUAL) O INLET PRODUCTION ® Y WATTLE PRCIECTM ® O ROCK SOCK SEEMED ANGLE BACKING PAD CONCRETE WASHOUT AREA O QWM DOWNSPOUT (DIRECT PPE) DOWISPOUT(pVH BASH) DOWH9PI7 (WNFACE RELEASE) IIP1111V L BE SAE. ME AND LOCATION OF ALL KNOWN UNDERGROUND UTUTES ARE APPROXIMATE WHEN SHOWN ON THEY CRAMMS, IT MULL BE ME RESPONSIBIUTY OF ME CONTRACTOR TO AM" THE EXISTENCE Of ALL UNDERGROUND UTUTES IN THE AREA OF ME WORK. BEFORE COMMENCING NEW CONSTRUCTION. ME CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING ALL UNDERGROUND UTUTES AND SPI BE RESPONSIBLE fM ALL UNKNOWN UNDERGROUND UTUTES 3. EROSION CONTROL PRACTICES,STE %BTECTON. AND RE GETATON METHODS SHALL FOLLOW CITY REWUTONS 1. IT SNWI➢ BE NOTED THAT ANY EROSION CONTROL RAN SORYFS GUIDELINEDAILY AS A PLACINGG OFBESTMANAGE ENT PPRRCES TCES (BMPa)NS EXPECTED. M171MAL AND/OR OffERENT SI FROM BOY CFIGANALLY DEPICTED MAY RE NECESSARY DURING CONSTRUCTION DUE TO CHANGING STE CONOTCNS ON AS REQUIRED BY LOCAL WMCRIIBS a. THIS EROSON CONTROL PLAN IS ECHEMADC M NATURE. AS SUCH, GRAPHICAL SYMBOLS MAY NOT BE TO SCALE. NM IRE BEY ECESSARILY SHOWN IN THEIR EXACT LOCATION 5 THE CONTRACTOR MI BE RESPONSIBLE FOR ALL PERMITTING (OTY. STATE DISCHARGE PERMIT. ETC) AND COMPUANCF WTH GOWNING AUB IN ES IT SHALL BE THE RESPONEI9UTY Of ME CONTRACTOR (W PERMIT HOLDER) TO ENSURE EROSON CONTROL MEASURES ARE VRCPBUY MAINTAINED AND FOLLOWED. S. CONTRACTOR SMALL IMPLEMENT THE APPROPRIATE EROSION CONTROL WEASIMS ACCORDING TO ME CONSTRUCTION SEQUENCING AND LEVEL Of SITE STAHUZAMON, ). CONTRACTOR SHALL IMPLEMENT APPROPRIATE INM£T PROTECTION FOR ALL STORM DRAINS UNTIL STE IS FULLY STAM-DED. INUT PROTECTION SMALL RE ADAPTED. AS NECESSARY, TO THE SURROUNDING SURFACE TYPE AND CONDITION (La. OTANE-OD`hN Tn£C FOR BARE S014 SANG BAGS OR IWAWL SOCKS FOR PAWMENT ETC.) B. CONTRACTOR SHALL IMPLEMENT APPROPRIATE PRRNETER PROTSTCN FOR AREAS ORECTNG DRAINAGE OFSID PENWETER PROTECTION SHALL BE ADAPTED, AS NECESSARY, TO THE SURROUNDING SURFACE TYPE AND COMMON (I. A, STAKE-DRIAN DECADENT CgRB0. LOOS OR OUT FENCE FOR BARE SUL. SAND BAR OR GRq`h1 .. FOt PAVENETT, ETC.) SI CONTRACTOR SIC ALL SLOPES. PMMOILARLY IS THOSSEE RESPONSIBLE STEEPER THAN OR T 6 ILIP CRIMP MULCHING, BIDDING MULCKM EROSION MATS, TEMPORARY IRRIGATON. AND ADDITIONAL WAI W SLY FENCING NAY BE MQSBARY TO ESTABUSI WGirnnW COVER AND STABILIZE BE YCE. 1O SEE LANDSCAPE PANS FOR MAMMAL INFORwnpl ON PLANTING, ELEYTAnON. HARDSCAPE AND OTHER PERMANENT STE STABILIZATION METHODS, CALL DTI �ICA QN. CENTER OF AQU is KnC Cali TENDOWATDA. E.. �1 mgFBC Z y(U Q ^Q LL a x J I EL 0 �J Q LL zd. OLLJ o n z fn m OU 02 0�a Wz } O FSheet C6.02 Oi 11 Sheets TABLE OF CONSTRUCTION SEQUENCE AND BMP APPLICATION AOYRt WEFIHHY YWPYiNI IWDYI�NY Wu.sAr W e rr WRwWwM W TWW M9 r...W.RRwWs KINKIER R..eN...W..: �rrn Mu.W.r r.Lw.a ® NORTH 10 0 10 Dn IN FEET ) 1 Ina - 10 K LEGEND: ROW LIFE PROPOSED PROPERTY UHE EXISTING CONTOUR PROMISED CprtpM PROPOSED WRIT CURB AND LATER (MICAL) EXISTING CURB AND OUTER PROPOSED STORM KKR EXISTING TREES EXISTING CORI E ,I �.. MEGYG KHCflEN PROPOSED ASPHALT WILL AND OWFLAY 3r ENCE W— NUT FILTER (MRM DANDY SACK OR MPRPhO EQUAL) O INLET PROTECTION y C( L L WATTLE PROTECTKIN ® O ROCK SCIX WHICLE TRACKING PAD CONCRETE WASHOUT AREA O O ® DOWNSPOUT (DIRECT PIT£) DOWNSPOUT (MAIN BA9N) DOWNSPOUT (SURFACE RELEASE) NOTES L ME 9ZE. TYPE AND LOCATOR Of ALL KNOWN UNDERGROUND nuEs ARE APPROXIMATE WREN BROWN ON THESE MAMNOS IT SOUL BE THE RESPONSIBILITY OF THE CONTRACTOR TO MIRKY THE EXISTENCE OF ALL UNDERGROUND UTILITIES IN ME AREA OF THE WORK. STORE COMMENCING NEW CMS]RKBON, ME CONTRACTOR SHALL BE E9YH PM LOCATING ALL UNDERGROUND UTILITIES AND 9Vll BE RESPONSIBLE FOR ALL UNKNOWN UNDERGROUND UMIRES 3. EROSION CONTROL. PRACTICES, 9E PROECnON, AND REWEGETATIM METHODS 9011 FOLLOW CITY REGULATORS } IT SHOULD K NOTED THAT ANY EROSION CONTROL PLAN SEPKS ONLY AS A SUNNI TO ME CONTRACTOR STAGING ANO/M PNA9NG CF BEST MANAGEMENT PRACTICES (BI IS EXPECTED. ADOTMAL AND/OR DIFFERENT BMPo FROM n GCE CMONALLY DEPCTED MAY BE NECESSARY DURING CONSTRUCTOR DUE TO CHANGING SHE CONI OR AS REQUIRED BY LOCAL AUMOXTES A, THIS GRAPHICALMCONTROL SYMI MALAN IS SCHEMATIC W NATURE. ASNOT BE TO SCNENOR ARE THEY SUCH. NECESSARILY BROWN IN THEIR EXACT LOCATION. 5. ME CONTRACTOR BRALL BE RESPONSIBLE FOR ALL MONITORS (CITY, TATE MMI ES ITTKNIT, ETC.) SHALLBEMRESPONSIBILITY AND LIANCE WITH DOWNWIND AUOF THE CONTRACTOR OORPROPERLYI MAHOLDER) 1MfDTAND FOLLOWED ENSURE DOM CONTROLMEASURESARE 5, CONTRACTOR SMALL IMPLEMENT THE APPROPRIATE EROSION CONTROL MEASURES ACCORDING TO THE CONSTRUCTOR SEQUENCING AUD LEVEL OF 9E STANLIZATON. ] CONTRACTOR SMALL IMPLEMENT APPRCMIATE INLET PROTECTION FOR ALL STORM MAINS UNTIL SITE IS FULLY STABILIZED. INLET PROTECTION SMALL BE ADAPTED, AS NECESSARY. TO ME SURROUNDING SURFACE TKE AND CONOTON (le., STAKE-MIWSN WATEES FM BARE SdL SAND BAGS OR CRAWL SOCKS FOR PAWMEHT, ETC.) 9, FOR CONTRACTOR GRDIRECTING DRAINAGE O SSHALL IMMUMENT TEE.PERIMETERPRTM PROTECTION SHALL BE ADOPTED, AS NECESSARY, TO THE SURROUNDING SURFACE TWE AND CONDITION (L.., STONE -DRIVEN SEDIMENT CONTROL LW'S M SILT FENCE FOR BARE SOIL. SAND BAGS M CRAWL SOCKS FM PAMARENT. ETW W. CONTRACTOR IS RESPONSIBLE PM STABILIZING ALL SLOWER, MTOULARLY NOSE STEEPER THANK 6.1. WIMP MULCHING HYDRO MULCHING. EROSION MATS HRRHGATON. AND ADDITIONAL BATTLES M 9LT FENCING MAY BE NECESSARY TO ESTABLISH WGETAnW GOWN AND STABILIZE THE SLOPE. 10, SEE LANDSCAPE PLANS FOR ADOITONAL INFORMATION ON PLANTNG, RETEETATION. HAMSCAPE AND OTHER PERMANENT STE STABLOAnM METHODS. EVLM LORADOfENOn CF ��O KnowwMRDNIOW. CUdg GVAC all �yDTAAW ftb Z Q ^J^ LL z OJ Q 7 r W o LL Z Du) cu o U (T Z _U m 0Q in 0U) Ir W pSheet C6.00 Of 11 Sheets �.�a00000aomo ® NORTH 10 0 10 GO W FOUL IN FEET ) 1 No - 10 N. LEGEND: — NOW LINE - - PROPOSED PROPERTY LANE EXISTING CMTWR PROPOSED CCRTOLF _. PROPOSED VRncu CARS AND GUTTER (MICA-) EXISTING CURB AND GOTTEN PROPOSED Sight SEMEN -m Wt EXISTING TREES PARENT; CONCRETE r PROPOSES CONCRETE PREPARED ASPHALT MILL AND OVERLAY SILT FENCE F—® INLET FILTER (MIRAR DANDY SACK M APPROVED EQUAL) O NUT PROTECTOR � LA WATTLE PROTECTION ® O ROCK SOCK VEHICLE TRACING PAD CONCRETE WASHO1i AREA O y IN DDMNBPDUT(DRECT POE) DOWNSPOUT (MAN BASIN) DOWNSPOUT (SURFACE RELEASE) NOTES 1. THE SIZE, TYPE AND LOUTON OF ALL KNOW UNDERGROUND TLIOEB ARE APPROXIMATE WHEN SHOW ON THESE DRAWINGS IT EXISTENCE OF ARESPONSIBILITY L UOiNDERGROUNo unule[s IN CONTRACTOR AREA OFT. MC E WORK. BEFORE COMMENCING NEW CONSTRUCTION. THE CONTRACTOR SMALL BE RESPONSIBLE FEW LOCATING ALL UNDERGROUND UTIUTES AND SMALL BE RESPgl4BLE FOR ALL UNKNOWN UNDERGROUND VTUTES. Z. EROSION CONTROL PRACTICES, SEE PROTECTION. AM REKOEunOM ETHOM SHAu FOUDW On REOIu1KMls ]. IT SHOULD BE NOTED THAT ANY EROSION CCRIRO PUN SERIES WILY AS A GUIDELINE TO THE CONTRACTOR STASNO AND/M PHASING OF BEST MANAGEMENT PRACTICES (GNP,) IS EXPECTED. µOTIONAL AND/OR DIFFERENT ENDS FROM THOSE ORIGINALLY DEPICTED MAY BE NECESSARY DURING CONSTRUCTION DUE TO CHANGING STE CONNECTIONS OR AS REWIRED BY LOCAL AUIDCRITES. ♦ THIS EROSION CONTROL ALAN IS SCHEMATIC IN NATURE. AS SUCH, GRAPHICAL SYMBOLS MAY NOT BE i0 SCALE, HIM ARE THEY NECESSARILY GROWN IN THEIR EXACT LOCATION. 5 THE CONTRACTOR SMALL H RESPONSIBLE AN ALL PERMITTING (CITY. STATE OSCHARGE PERMIT. ETC.) AND COMPLIANCE AN COMMON AUTMCWTES IT SMALL BE THE FESPONGINUTY O THE CONTACTOR BORPROPERLY MAWTAINPERMIT EDT AND ENSURE OLLOWED EROSION [M1R0. MEASURES ARE 6 CONTRACTOR SHALL IMPLEMENT THE APPROPRIATE EROSION CONTROL MEASURES ACCORDING i0 THE CONSTRUCTION SEWEHGHC AND LEVEL BE SITE STABILIZATION. l CONTRACTOR SHALL IMPLEMENT APPROPRIATE BUT M0 CNM FOR STORM MAINS UNTIL SITE IS FULLY STABUZEO. INLET PROTECTION SHALL BE ADAPTED, AS NECESSARY. TO ME SURROUNDING SURFADE TYPE AND CONDITION (Ls. STAKE-OMYEN AiTES FOR BARE SOT. SAND BAGS ON GRAVEL BOOKS FM PAVEMENT. EX) B CONTRACTOR SMALL IMPLEMENT APPROPRIATE PERIMETER PROTECTION FOR AREAS DPECTMG MANAGE OERTE. MU METER PROTECTON SMML BE ADAPTED, AS NECESSARY. TO THE SURROUNDING SURFACE TYPE AND CONDITION D.... STAKE-DMVEN MOMENT CONTROL LESS OR SO FENCE FOR BARE SOL. SONG BACS ON GRAVEL SEEKS FON PAVEMENT, ETC.) IL CONTRACTOR IS RESPONSIBLE FOR STABUZING ALL SLOPES, uµPMURLY THOSE STEEPER THAN SA, CRIMP MULCHING, HYDRO uLCHING. ENOUGH MATS. TEMPORARY IRRIGATION. AND AD ITONPL WAiT£S OR SILT FENCING GiIY BE NECESSARY TO ESTABLISH KGEEPT VE LOVER UZE THE SLOPE. MO SEE REVEOETATONN.. LANDSCAPE ANDPLANS FOR OTHERPERMANENT TONE RUNNING. STABILIZPTM METHODS Z to Z s W� i = W r Z D Z Zw Sheet C6.03 Of 11 Sheets oaoaooaoa©mo ® NORTH 10 0 10 m L IN FEET ) 1 iAN - 10 K LEGEND: NEW ME PROPOSED PROPERTY THE EXISTING CONTOUR -- PROPOSED CONDOM PROPOSED VRTICAL CURB AND OUTIER (TYPICAL) EXISTING CURB AND GUTTER PROPOSED STORM SENIOR EXISTING FUELS CONCRETE I ' � EXISING CMMEIE j PROPOSED CCIKMTE PROPOSED ASPHALT MU AND OVERUY SILT PENCE K® INLET PALTER (MRM DµBY O SACK OR APPROIED EWAL) �yy NLET PROTECTION fL 11 © Z C7 A RafJf d/ Z wATll£ PROTECTION W ! BOCK SUCH Z p' VEHICLE TRACKING HAD ® O ya Z G£ CONCRETE MASNOUT AREA MxNSFWT (ORIECT RPE) e DOWNSPOUT (OHM BASW) �. DOWNSPOUT (SURFACE BULLISH) NOTES: 8y1f 1. THE SIZE, TYPE AND LOCATOR OF ALL KNOW UNDERGROUND Ai UTLUTES AM APPROXIMATE 'MIEN SHOWN OR THESE CRAMNGS. ITSHALL BE i THE EXISTENCE OFE ALL UNDERGROUND UTILITIES INTHONSIBILITY OF THE EMAREA OFDO MRTHE II( WORK. BEFORE CO.IMENCINO NEW CONSTRUCTION, THE CONTRACTOR SHALL BE RESPONpBLE FOR LOCATING ALL UNDERGROUND STORE. AND SMALL BE RESPONSIBLE FDA ALL UNKNOWN UNDERGROUND UTUTIES f Z. OREGON CONTROL RRACTIQS STE PROTECTOR. AND REKGEiATOI �H MEDICOS SHALL FOLLOW CITY REGULATIONS b x ]. IT SHOULD BE NOTED NAT ANY EROSION CONTROL RAH SERVES ONLY AS A GUIOENE TO THE CONTRACTOR, STAGING AND/M AAA PHASING OF BEST MANAGEMENT PRACnCES NMI IS EYPECTM. ADDITIONAL AND/M DEFERENT BWe FROM MOM' ORIGINALLY DERCTED MAY BE NECESSARY DURING CONSTRUCTION DUE TO CHANGING SINE CMdTONS OR AS REQUIRED BY LOCAL AUTHORMCS. FF BW {i Ym W ♦ THIS EROSION CONTROL PLAIN IS SCHEMATIC A NATURE. AS SUCH.GUAPKCy3 { NESM RLY YMMIS SHOW INY NOT BE TO FAIR EXACT LCC TA SCALE. NOR ARE THEY N 5. ME CONTRACTOR SHALL BE RESPONSIBLE FM ALL PERMIOTNG (CRY, STATE DISCNµGE PERMIT. ETC) AW COMPLIANCE MTH WARNING AUMCRITES. IT SHALL BE ILIE RES'MGSLITY OF ME CONTRACTOR �AINTAINEDDA ERMIIYHOLER) TµOSU� IONOR CONTROL MEASURES ARE 6. CONTRACTOR SHALL IMPLEMENT ME APPROPRIATE CROWN CONTROL MEASURES ACCORDING TO ME CONSTRUCTION SEWENONO AND LEVEL OF GTE STAINUZATN. ). CONTRACTOR SHALL IMPLEMENT APPROPRIATE INLET PROTECTN FOR NL STORM DAMNS UNTIL SITE IS FULLY STA RD. INLET Z W V / RILI SHALL BE ADAPTED. AS NECESSARY. TO THE SURNAND SURFACE TYPE D CONDITION (I C. STAKE -MAN /^ ANTILES FN BARE SO . SAND BAGS OR CRAWL SOCKS FOR PAMWNT. ETU.) J = A, CONTRACTOR SHALL IMPLEMENT APPROPRIATE PERIMETER HIND DN a FDA AREAS GREOTMG DAMNAGE BEFGTE. DESERTER PRp2CnN J SHALL BE SURROUNDINGADAPTED, AS NECESSARY, TO THE SURROUNDING SURFACE x TYPE AND CNDTN (Le.. STµ E-NNUN SEGMENT CONTROL LOGS OR SILO L T FENCE FDA BAND RE SOL, SABAGS OR GRAVEL SOCKS FOR PAVEMENT ETCN .) n- Z R. CONTRACTOR IS RESPONSIBLE FDA STABIUZING ALL STORES, LLL_ A LI HYDRO MULCHING, EROSION MATS•TEMPORARY IRRIGADON MµD ADDITIONAL p r \Jl WATTLES OR OUT FENCING MAY BE NECESSARY TO ESIAWSH LL Z /T VECETATIE COAR AND STADIUM ME SLOPE. O LL lQ ADDITIONAL LANDSCAPE PLANS FDA ADDITIAL INFORMATION ON RANDNG, (� W REYEGETATNAND. HARDSCAPE D OTHER PERMANENT STE STABIUZAnN METHWS Q m O� �5U 02 wz IULIT INTINWNTROF ury •LORmD Sheet KRMw"Isbelow. CaII IMIOB rGDaq. `'6.04 Of 11 Sheets UTTMolmsiol• • - • • oaa0000aoo©o All- 3- ID0 1030 GO Eezl IN FEET ) I nNl - ICI X. LEGEND: ROWLINE PROPOSED PROPERTY TINE EASING CONTOUR PROPOSED CONTOUR PROPOSED VERTICAL CURB AND GOTTEN "CAL) EAI CURB AMP GOTTEN PROPOSED STORM SEWER EASING TREES EASING MIOlE1F PRCPoSfD CCNCOETE PROPOSED ASPHALT WILL AM OVERLAY LLi FENCE Pi ® INLET FILTER (CON DANDY SACK ON APPRO`hD EQUAL) O INLET PROTECTION L BATTLE PROTECTION ® O ROOM SOCK RaW� VEHICLE WRACKING PAD CONCRETE WASHOUT AREA r- CODA ®Y DOWNSPOUT (DIRECT RPE) DOWNSPOUT (DRAIN BASN) DOWNSPOUT (SURFACE RELEASE) NOTES L ME SZE, TYPE AND LOCATION OR ALL KNOWN UNDERGROUND UTILITIES ME APPROXIMATE WHEN GROWN ON THESE ORAMNGS. IT SHALL TO VERIFY ISTE EXISTENCE ORE ALL UNDERGROUND UIUIERESPONMEMLITY Of ME CESSU NAMERAREA OR ME E WORK. BEFORE COMMENCING NEW CONSTRUCTION. ME CONTRACTOR SHALL BE RESPONSIBLE FOR LOCATING ALL UNDERGROUND UIUIES AMU SMALL E RESPONS19E FOOL ALL UNKNOWN UNDERGROUND UTILITIES 2 EROACN CONTROL PRACTICES, SITE PROTECIM, AMC RF2GETAnO1 METHODS SHALL FOLLOW CITY REGULAMXIS a IT SHOULD BE NOTED THAT ANY EROSOI CMM0. PLAN SERVES ONLY AS A GUIDELINE PHASING OFBEST MANAGEMENT CONTRACTOR CES BMPe 5 EXPECTED. AOpnglAl AND/OR DIFFERENT PRO, FROM MOM ORIGINALLY DEPICTED MAY BE NECESSARY DURING CONSTRUCTOR DUE TB CHANGING DOE CONDITIONS OR AS REQUIRED BY LOCAL AUTHORITIES ♦ M15 ERMIM CONTROL PLAN IS SCHEMATIC W NATURE. AS SUM, GR APHICAL SYMBOLS MAY NOT BE 70 SCALP. NCR ARE THEY NECESSARILY SHOWN IN METE EXACT LOCATOR. 5. MF CONTRACTOR SHAII Bf RESPONSIBLE FOR ALL PERMITTING (CITY. STATE DISCHARGE PERMIT, ETC.) AND COMPLIANCE WITH COLERNIC AUMdRITIES. IT SHALL BE ME RESPOxS6WTY OF ME CONTRACTOR (R PERMIT"RTY DENEDTO D fURE EROSION CONTROL MEASURES ME PROP6. CONTRACTOR SHALL IMPLEMENT ME APPROPRIATE EROSION MR1R0. MEASURES ACCORDING TO ME CONSTRUCTION SEQUENCING AND UO&L OF OTE STABILIZATION T CONTRACTION SHALL IMPLEMENT APPROPRIATE INLET PROTECTION FOR ALL STORM DRAMS UNTIL STE IFULLY S7AMJZEDPROTECTION SHALL BE ADAPTED, AS NECESSARY 70IMENLEi SURROUNDING SURFACE TYPE AND CONDITION (la. STAKE-DRIYEH WATTLES FOR BARE SOLI SAND BAGS OR GRAVEL MORS FDA PAVEMENT, ETC.) B. CONTRACTOR SHI YPLEM EXT APPROPRIATE PERIMETER PROTECTW FOR AREAS DIRECTING DAMAGE OFFSTE. PERIMETER PROTECTION SCAM BE ADAPTED, AS NECESSARY, TO THE SURROUNDING SURFACE ME AND CONDITION (L.. STAKE -DI SEDIMENT CONTROL EGGS M SLIT FENCE FILM BARE SOIL. SAND BAGS UP GRAVEL SDaS FOR PAYfuExi, ERG) B. CONTRACTOR M RFSPGN99E FOR STABILIZING ALL &I PARTICULARLY THOSE STEEPER THAN 6-.1. CRIMP MULCHING. HYDRO MULCHING. EROSYN MATS. TEMPORARY IRMGATION. AND MDICOHAL TITLES OR PLY DEFUSING MAY RE NECESSARY TO ESTMUS1 YEETAnvE COVER AND STABILIZE ME SLOPE, TIT ME LANDSCAPE PLAINS FOR ADDITIONAL INFORMATION ON PLANNING, FIKETATION. HARDSDAFE MD OTHER PERMANENT STE STARRUAnpR METHODS. ULLLmLTY ao� IMPORT OF OTRAwAal'sbelm. Call DeRwayDMelq m% S b 3S s? ¢ I Z w '^ VT/ ILL y �a 0 E y Z ZJ o(L Uw OU) �5U 02 itQ wz 0 Sheet C6.05 Of 11 heels I 1 11 1 Northern Enoineerina.com 11 970.221A15A __ =-_--- ME I_.:.reams• s-a:>�.�xr-arstr....., m ff_........e —s—O II%II ; ail _. w 'isY� e sscm.se a -CIA IT GTOXA Nr�-e's:sam�ae••.�^ •• of SILT FENCE ox DROP INLET PROTECTION xor ro scNE mm NOT TO scuE LICE, — _ _m m .... To �v¢ASrum r � �neevs O FIE r"1♦�—� �� O NJ ILI 1�7—t1 as WATTLE INSTALLATION c6m WE ro SCALE aA �••••••— 'A!� '� 48919 ... --.i .—.w......c®� r C. 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