type of workpavement markings sectionI-5: striping mp 18 168 highwaypacific highway

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  Perforated plate openings shall be 3/32 inch or smaller.
  
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  Mesh or woven wire screen openings shall be 3/32 inch or smaller in the narrowest direction.
  
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  Profile bar screen or wedge wire openings shall be 1/16 inch or smaller in the narrow direction.
  

Choose size and position of screens to meet the following criteria:

Provide ditch screens with a bypass system to transport fish safely and rapidly back to the stream.

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  Use of pesticides and herbicides.
  
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  Use of short pieces of plastic ribbon to determine flow patterns.
  
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  Temporary roads or drilling pads built on steep slopes, where grade, soil type, or other features suggest a likelihood of excessive erosion or slope failure.
  
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  Exploratory drilling in estuaries that cannot be conducted from a work barge, or an existing bridge, dock, or wharf.
  
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  Installation of a fish screen on any permanent water diversion or intake that is not already screened.
  
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  Projects that require in-water installation of hollow steel piling greater than 24 inches in diameter, or use of H-pile larger than designation HP24.
  
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  Drilling or sampling in an EPA-designated Superfund Site, a state-designated clean-up area, or the likely impact zone of a significant contaminant source, as identified by historical information or U. S. Army Corps of Engineer representative.
  
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  Replant all damaged streambanks before the first April 15 following construction.
  
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  If use of large wood, native topsoil, or native channel material is required for the site restoration according to the roadside development plans, stockpile all large wood, native vegetation, weed-free topsoil, and native channel material displaced by construction. Cut trees or large wood and trees into pieces of no less than 20 feet in length, or as shown on the roadside development plans or as directed. Stockpiled native wood and vegetation remain the property of the Agency.
  
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  Stabilize all disturbed soils, including obliteration of temporary access roads, following any break in work unless construction will resume in 4 Calendar Days.
  

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  When alternative surface sources are available, divert from the stream with the greatest flow.
  
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  Install, operate, and maintain a temporary fish screen.
  
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  Do not exceed a pumping rate and volume of 10% of the available flow. For streams with less than 5 cubic feet per second, do not exceed drafting of 18,000 gallons per day. Do not use more than one pump for each site.
  

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  Minimize the number and diameter of pilings, as feasible.
  
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  Repairs, upgrades, and replacement of existing pilings consistent with these conditions are allowed. In addition, up to five single pilings or one dolphin consisting of three to five pilings may be added to an existing facility.
  
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  Whenever feasible, use vibratory hammer for piling installation. Otherwise, use the smallest drop or hydraulic impact hammer necessary to complete the job, and set the drop height to the minimum necessary to drive the piling.
  
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  When using an impact hammer to drive or proof steel pile, one of the following sound attenuation devices must be used to reduce sound pressure levels by 20 dB.
  
  
  

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  Place a block of wood or other sound dampening material between the hammer and the piling being driven.
  
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  If water velocity is 1.7 miles per hour or less, surround the piling being driven by an unconfined bubble curtain that will distribute small air bubbles around 100% of the piling perimeter for the full depth of the water column. Contract the Project Manager for guidance on how to deploy an effective, economical bubble curtain.
  
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  If water velocity is greater than 1.7 miles per hour, surround the piling being driven by a confined bubble curtain (for example: a bubble ring surrounded by a fabric or metal sleeve) that will distribute air bubbles around 100% of the piling perimeter for the full depth of the water column.
  
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  Written approval of an alternative sound attenuation plan may be requested to the U. S. Army Corps of Engineers through the Project Manager, provided the plan will maintain sound pressure levels below 150dB rms (1 micro Pascal) for a minimum of 50% of the driver strikes, and peak sound pressure levels below 180 dB rms (1 micro Pascal) for all strikes.
  

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  Design, build, and maintain facilities to collect and treat all construction and drilling discharge water using the best available technology applicable to site conditions. Provide treatment to remove debris, nutrients, sediment, petroleum hydrocarbons, metals, and other pollutants likely to be present. An alternate to treatment is collection and proper disposal offsite.
  
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  Isolate drilling operations from wetted stream to prevent drilling fluids from contacting waters of the state and U.S.
  
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  Use casing to prevent loss of drilling fluid to the subsurface formation. Do not drill open hole.
  
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  If it is necessary to drill through an over-water bridge deck, use containment measures to prevent drilling debris from entering the stream channel.
  
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  If drilling fluid or waste is released to surface water, wetland or other sensitive environment, cease all drilling pending written approval from appropriate regulatory agencies through the Project Manager to resume drilling.
  
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  Recover all waste and spoils if precipitation is falling or imminent. Recover, recycle, or dispose of all drilling fluids and waste to prevent entry into flowing water.
  
  
  

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  Recycle drilling fluids using a tank instead of drill recovery/recycling pits, whenever feasible.
  
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  When drilling is completed, make attempts to remove the remaining drilling fluid from the sleeve (for example: by pumping) to reduce turbidity when the sleeve is removed.
  

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  Store treated wood shipped to the Project out of contact with standing water and wet soil, and protected from precipitation.
  
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  Visually inspect each load and piece of treated wood. Reject for use in or above aquatic environments if visible residues, bleeding of preservative, preservative-saturated sawdust, contaminated soil, or other matter is present.
  
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  Pilings treated with ammoniacal copper zinc arsenate, chromated copper arsenate, or creosote may be installed below OHW provided that no more than 50 piles are used. No other use for treated wood or preservative type is allowed below or over the OHW.
  
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  Use pre-fabrication to the extent feasible. When field fabrication is necessary, all cutting and drilling of treated wood, and field preservative treatment of wood exposed by cutting and drilling, shall occur above the OHW. Use tarps, plastic tubs, or similar devices to contain the bulk of any fabrication debris, and wipe off any excess field preservative.
  
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  All treated wood structures, including pilings, shall have design features to avoid or minimize impacts and abrasion by livestock, pedestrians, vehicles, vessels, and floats.
  
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  Treated wood may be used to construct a bridge, over-water structure or an in-water structure, provided that all surfaces exposed to leaching by precipitation, overtopping waves, or submersion are coated with a water-proof seal or barrier are maintained. Apply and contain coatings and paint-on field treatment to prevent contamination. Surfaces that are not exposed to precipitation or wave attack, such as parts of a timber bridge completely covered by the bridge deck, are exempt from this requirement.
  
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  During demolition of treated wood, ensure that no treated wood debris falls into the water. If treated wood debris does fall into the water, remove it immediately.
  
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  Store removed treated wood debris in appropriate dry storage areas, at least 150 feet away from the regulated work area.
  

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  Dislodge the piling with a vibratory hammer, whenever feasible.
  
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  Once loose, place the piling onto the construction barge or other appropriate dry storage site.
  
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  Ensure remaining treated wood piling is broken, cut, or pushed at least 3 feet below the sediment surface and covered with a cap of clean, native substrates that match surrounding streambed materials.
  
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  Fill holes left by each piling with clean, native sediments whenever feasible.
  

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  Do not work more than 20 feet upstream or downstream the culvert or trash rack.
  
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  Remove only the minimum amount of wood, sediment, or other natural debris necessary to maintain the facility’s function, without disturbing spawning gravel or changing the configuration of the original ditch, unless the new configuration is part of the project design.
  
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  Place all large wood, cobbles, and gravels recovered from during culvert and trash rack cleaning downstream from the structure.
  
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  Complete drift removal in the following priority, as directed:
  

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  Pull and release whole logs or trees downstream.
  
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  Pull whole logs and trees and place in the riparian area, as directed.
  
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  Remove whole logs or trees only if roadside development plans have been developed for replacement in-kind.
  
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  Pull, cut only as necessary, and release logs and trees downstream.
  

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  boat house
  
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  boat ramp made of asphalt
  
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  buoy or float in an active anchorage or fleeting area
  
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  covered moorage
  
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  floating storage unit
  
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  houseboat
  
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  marine
  
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  pier
  
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  non-water related facilities (including staging areas) inside riparian management areas
  
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  any other over-water structure more than 6-feet wide unless otherwise approved in writing by appropriate regulatory agencies through the Project Manager
  

The following conditions apply to floatation structures:

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  Concrete boat ramps that consist of pre-cast concrete slabs below the ordinary high water elevation, and higher elevation portions that are completed in the dry so that no wet concrete that has cured less than 24 hours is allowed to contact any wetland or waters of the state and U.S.
  
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  Rock may be used to construct a boat ramp footing, or other protection necessary to prevent scouring, down-cutting, or failure of the boat ramp, provided that the rock does not extend further than 4 feet from the edge of the ramp in any direction.
  
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  Any replacement roof, wall, or garage door for covered moorages and boat houses must be made of translucent materials or skylights. In addition, each side, except the door, of the boat house shall have windows at least 4 feet wide installed the length of the boat house, subject to breaks only for structural support.
  
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  An existing marina may be modified within the existing footprint of the moorage, or in the water more than 50 feet from the shoreline and more than 20 feet deep, except that structures may not be placed in areas that support aquatic vegetation or areas where boat operations may damage aquatic vegetation.
  
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  Fit all pilings, mooring buoys, and navigational aides with devices to prevent perching by piscivorous birds.
  
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  Permanently encapsulate all synthetic flotation material to prevent breakup into small pieces and dispersal in water.
  
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  Install small temporary floats less than 7 Calendar Days before a scheduled event, remove them five days after a scheduled event is concluded, and do not leave them in place longer than 21 Calendar Days.
  
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  Install mooring buoys and temporary floats (for example: shellfish traps) more than 300 feet from native submerged aquatic vegetation, more than 50 feet from the shoreline, and in water deeper than 20 feet deep at all times, or as necessary to ensure that gear does not ground out unnecessarily, and boats do not prop wash the bottom.
  

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  Schedule bridge demolition outside of the bat breeding season (___(date)___ to ___(date)___).
  
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  If this is not feasible and if approved by the Project Manager, apply exclusionary methods prior to this date to exclude bats from accessing suitable habitat. An exclusionary device is any method that denies birds physical access to the nest site area (for example: nets and hole blockers).
  
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  Exclusionary devices must be installed a minimum of 15 days prior to this period.
  
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  Inspect, maintain, and repair exclusionary devices to prevent active occupancy by bats during period listed above.
  
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  Describe measures to avoid disturbance to migratory bird nesting habitat (vegetation, structures) from March 1 to September 1 of each year.
  
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  Do not begin work until the migratory bird protection plan is approved.
  
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  In the event the nesting birds or bats are encountered during construction, the Engineer may suspend the work according to 00180.70
  

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  Provide a list of qualified personnel experienced in bird identification, including a summary of their qualifications. A qualified individual shall have at least 2 years of work experience identifying nesting birds in the Pacific Northwest.
  
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  Describe measures to avoid disturbance to migratory bird nesting habitat (vegetation, structures) from March 1 to September 1 of each year. If complete avoidance is not feasible, describe measure and method to prevent birds and bats from nesting within the Project Site. Describe measures to install, inspect, maintain, and repair exclusionary devices and/or harassment methods, and a schedule for installing, inspecting, and removing exclusionary measures.
  
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  Do not begin work until the migratory bird protection plan and the implementation schedule are approved.
  
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  Prevent nesting by native birds on structures to be removed or repaired and on vegetation to be removed as follows:
  
  
  

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  Install, inspect, repair and maintain exclusionary methods or begin harassment methods to prevent nesting of native birds in, on, or under the structures and the vegetation from March 1 to September 1 of each year.
  
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  If exclusionary measures have been installed or harassment methods have begun on-site prior to NTP, within 15 Calendar Days of the preconstruction conference, assume responsibility for ensuring that native birds do not nest in, on, or under the structures or the vegetation, according to Agency’s migratory bird protection plan, including maintaining and inspecting exclusionary measures.
  
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  Using qualified personnel from the list, perform inspections on the structures (and the vegetation) according to the implementation schedule for nesting activity and effectiveness of exclusionary measures. Document inspections and maintain documentation on-site.
  
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  Remove existing bird nests only if no eggs or young are found.
  
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  Meet with the Agency Biologist, the Engineer, and inspector on-site if nests containing eggs or young are found.
  
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  Use equivalent materials when repairing or replacing damaged exclusionary measures.
  
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  If on-site work is completed prior to September 1, discontinue exclusionary measures or harassment methods.
  

In the event the Contractor fails to prevent nesting of native birds, the Engineer may suspend the work according to 00180.70.

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  Non-blasting high-noise producing construction activities are not allowed between April 1 and August 5. Blasting activities within one mile of sensitive habitat shall be conducted only between September 15 and March 30.
  
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  Non-blasting high noise producing construction activities conducted from August 6 to September 15 shall implement a daily limited operating period of daytime work being conducted from two hours after sunrise to two hours before sunset. If night construction is needed, then activity shall be conducted one hour after sunset to one hour before sunrise.
  
  
  

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  High-noise producing activities, including blasting, are allowed only between November 1 and August 31.
  
  
  

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  Blasting and high-noise producing activities shall be prohibited during the following critical nesting period:
  
  
  

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  March 1 to July 7 for the North Coast Province.
  
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  March 1 to June 30 for the Rogue/Siskiyou National Forest (NF) and Medford District of U.S. Bureau of Land Management (BLM) in the Southwest Province.
  
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  March 1 to July 15 for the Umpqua NF in the Southwest Province.
  
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  March 1 to July 15 for the Willamette Province.
  
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  March 1 to September 30 for the Deschutes NF, Fremont, and Winema NF and unlisted areas.