Attachment A - Special Provisions and Specifications.pdf

ATTACHMENT A

SPECIAL PROVISONS & SPECIFICATIONS FOR

US101: MP 303.06 EMERGENCY CULVERT REPAIR PROJECT

SCOPE

The work to be completed under this Contract is located along the Oregon Pacific Coast Highway (US101) at MP303.06 in Curry County, OR, which consists of supplying the materials, equipment, labor and incidentals required to perform the following tasks as described in the Contract plans and specifications:

1. Provide temporary protection & direction of traffic.

2. Install and maintain erosion control. An erosion and sediment control manager is required.

3. Install and maintain temporary water management.

4. Remove striping.

5. Install temporary striping and pavement bars.

6. Install temporary barricades.

7. Provide portable traffic signal.

8. Construct temporary access road, east.

9. Construct temporary access road, west.

10. Provide concrete washout facilities.

11. Clearing and grubbing as shown on the plans.

12. Construct Streambed Enhancement.

13. Construct Riprap Lined Channel.

14. Install 370 feet of 48-inch culvert by tunneling, boring, or jacking.

15. Construct paved culvert end slope for 48-inch culvert.

16. Abandon and backfill approximately 370 feet of existing 42-inch CMP culvert.

17. Install 3,670 feet of horizontal drains.

18. Remove and place 50 feet of Midwest guardrail system.

19. Temporary and permanent seeding as shown on the plans.

20. Perform additional and incidental work as detailed in the Contract plans and specifications and as directed.

PROJECT INFORMATION

General information pertaining to this project may be obtained from the following:

Jessica Spann, Project Manager 307 Highway 42 Coquille, OR Phone: (541) 396-1143 Email: Jessica.SPANN@odot.state.or.us mailto:Blake.W.Howren@ODOT.state.or.us

US 101: MP 303.06 Emergency Culvert Repair Project

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 2

APPLICABLE STANDARD SPECIFICATIONS AND SPECIAL PROVISIONS

Silence of Specifications: The apparent silence of the specifications as to any detail, or the apparent omission of a detailed description concerning any point, shall be regarded as meaning that the highest value commercial practices are to prevail and that only materials and workmanship of first quality are to be used.

OREGON DEPARTMENT OF TRANSPORTATION

SPECIAL PROVISIONS

FOR

Drainage US101: MP 303.06 Emergency Culvert Repair project

Oregon Coast Highway Curry County

PROFESSIONAL OF RECORD CERTIFICATION:

Seal w/signature

I certify the Special Provision Section(s) listed below are applicable to the design for the subject project for Survey.

Modified Special Provisions were prepared by me or under my supervision.

Section 00305

FINAL ELECTRONIC DOCUMENT AVAILABLE UPON REQUEST

2025.05.20 08:08:16 -07'00' applicable to the design for the subject project for Roadway.

Sections 00231, 00280, 00310, 00320, 00330, 00350, 00390, 00460, 00810, 01030, 02050, 02320

2025.05.13 11:03:57 -07'00' applicable to the design for the subject project for Staging Area.

Section 00237

15:38:29 -07'00' applicable to the design for the subject project for Temporary Traffic Control. Modified Special Provisions were prepared by me or under my supervision.

Sections 00220, 00221, 00222, 00223, 00224, 00225, 00226, 00227

2025.05.13 15:09:20 -07'00' applicable to the design for the subject project for Hydraulics.

Sections 00245, 01091

2025.05.13 11:17:52 -07'00' applicable to the design for the subject project for Geotechnical.

Sections 00406, 00431, 00444, 00445, 00490, 02415, 02510

15:50:54 -07'00'

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 3

SECTION 00210 – MOBILIZATION

Comply with Section 00210 of the Standard Specifications.

SECTION 00220 - ACCOMMODATIONS FOR PUBLIC TRAFFIC

Comply with Section 00220 of the Standard Specifications modified as follows:

00220.02(a) General Requirements - Add the following bullet to the end of the bullet list:

• During stage construction, provide continuous 24-hour flagger operation, with a minimum of two flaggers. Occupy the advance flagger stations, as directed.

00220.40(e)(1) Closed Lanes - Replace this subsection, except for the subsection number and title, with the following:

Traffic Lanes may be closed on the Oregon Coast Highway US101 when allowed, shown, or directed during the following periods of time except as specified in 00220.40(e)(2):

Single Lane Closures – One Traffic Lane on the Oregon Coast Highway US101 may be closed during the following times:

• At all times

SECTION 00221 - COMMON PROVISIONS FOR WORK ZONE TRAFFIC CONTROL

Comply with Section 00221 of the Standard Specifications modified as follows:

00221.06 Traffic Control Plan - Replace this subsection with the following subsection:

00221.06 Traffic Control Plan and Tourist-Oriented Directional and Business Logo Signs –

(a) Traffic Control Plan - Submit one of the following, 5 Calendar Days before the preconstruction conference:

(1) Agency Traffic Control Plan - If the Contractor intends to use the Agency TCP without modification, a written notification indicating that the Agency TCP will be used without modification.

(2) Contractor-Modified Traffic Control Plan - The Contractor may request to use a Contractor-modified Agency TCP, or a TCP developed by the Contractor. Do not use a modified TCP, or a TCP developed by the Contractor, unless approved by the Engineer. Use the Agency TCP unless a modified TCP, or a TCP developed by the Contractor is accepted.

The Engineer is not obligated to consider any modified Agency TCP or a TCP developed by the Contractor. The Agency will not be liable to the Contractor for failure

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 4 to accept or act upon any request for a modified Agency TCP or a TCP developed by the Contractor.

To conserve time and funds, the Contractor may first submit a written request for a preliminary review by the Engineer. The request should contain a description of the proposal together with a rough estimate of anticipated dollar and time impacts. The Engineer will, within a reasonable time, respond to the Contractor in writing whether or not the request would be considered by the Agency.

If requesting a Contractor-modified Agency TCP, or a TCP developed by the Contractor, at a minimum the request shall meet all requirements of the Contract documents and comply with the Project transportation management plan (TMP).

Provide the following information:

• Stamped Working Drawings according to 00150.35 that include the proposed TCP showing all TCM and quantities of TCD.

• A TPAR plan that includes:

• Details and features used to provide pedestrian accessibility.

• Pedestrian staging Plans at a scale no smaller than 1 inch = 50 feet.

• Temporary alternate facilities or detour routes for pedestrian traffic.

• Staging sequences and details for Work affecting vehicular, pedestrian, and bicycle traffic.

• Proposed order and duration of the TCM.

• A detailed temporary striping plan.

If the Contractor’s request to use a Contractor-modified Agency TCP, or a TCP developed by the Contractor is approved in whole or in part, acceptance will be made by a Change Order.

The Engineer will establish prices that represent a fair measure of the value of Work to be added, changed, or deleted as a result of any accepted modifications to the Agency TCP or an accepted TCP developed by the Contractor.

Once a TCP has been accepted by the Engineer, any additional modifications must be submitted by the Contractor for Agency review following the procedure described above. The Engineer is not obligated to consider additional modifications to a previously approved TCP.

(b) Tourist-Oriented Directional and Business Logo Signs - Submit one of the following for approval, at least 5 Calendar Days before the preconstruction conference:

(1) No Signs - If there are no tourist-oriented directional (TOD) or business logo signs on the Project, a written notification that no TOD or business logo signs exist within the Project limits or

(2) Signs - Submit one copy of a sketch map of the Project showing all existing TOD and business logo signs and a written narrative describing how these signs will be kept in service and protected throughout all the construction stages. If modifications are

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 5 necessary, submit updated information to the Engineer for approval at least 21 Calendar Days before the change is needed.

00221.90(b) Temporary Protection and Direction of Traffic – Replace the bullet that begins “Providing, Surfacing, maintain…” with the following bullet:

• Providing, surfacing, maintaining, removing, and restoring the TPAR.

SECTION 00222 – TEMPORARY TRAFFIC CONTROL SIGNS

Comply with Section 00222 of the Standard Specifications.

• Install a "24 HR FLAGGING AHEAD" (CW20-9) sign in each direction approximately 250 feet prior to the "BE PREPARED TO STOP" sign. Remove the temporary signs when 24-hour flagging is no longer required, or as directed.

SECTION 00223 - WORK ZONE TRAFFIC CONTROL LABOR AND VEHICLES

Comply with Section 00223 of the Standard Specifications.

SECTION 00224 - TEMPORARY TRAFFIC CHANNELIZING DEVICES

Comply with Section 00224 of the Standard Specifications.

SECTION 00225 - TEMPORARY PAVEMENT MARKINGS

Comply with Section 00225 of the Standard Specifications modified as follows:

00225.90 Payment – Replace the paragraph that begins “Item (a)…” with the following paragraph:

Item (a) includes installation and removal of temporary pavement markers having either one or two reflective faces.

Replace the paragraph that begins “Item (b)…” with the following paragraph:

Item (b) includes installation of flexible temporary pavement markers and removal of flexible temporary pavement markers and temporary flexible pavement marker covers.

Add the following paragraph after the paragraph that begins “Item (b)…”:

Items (c) and (e) include removal of the temporary tape.

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 6

SECTION 00226 - TEMPORARY ROADSIDE BARRIERS AND IMPACT ATTENUATORS

Comply with Section 00226 of the Standard Specifications modified as follows:

00226.80(b)(2) Temporary Barrier - Add the following to the end this subsection:

The quantities will be limited to those shown in Table 00226-1. The estimated quantity of Temporary Barrier is:

TABLE 00226-1

Stage/Phase Location (STA to STA)

Temporary Barrier (foot)

Temporary Barrier, Minimum Deflection

(foot) All stages “A” 22+00 to “A”

25+50

Total Quantity 350

00226.90 Payment - Add the following paragraphs after the paragraph that begins "In items

(g) and (h)…":

Payment for items (g) performed beyond the quantity shown in the Contract Schedule of Items will be made at the Contract unit price if the Engineer determines that the Contract unit price does not exceed the value of the Work as determined according to Section 00197. If the Engineer determines that the Contract unit price exceeds the value of the Work, payment for the Additional Work will be made according to 00195.20.

Add the following paragraph:

No separate or additional payment will be made for TMA’s when the Contractor elects to use them where they otherwise are not required.

SECTION 00227 - TEMPORARY TRAFFIC SIGNALS AND ILLUMINATION

Comply with Section 00227 of the Standard Specifications modified as follows:

00227.13 Portable Traffic Signals - Replace this subsection, except for the subsection number and title, with the following:

Use new or like-new model STS PST-1000A portable traffic signals shown on the QPL with the Real-Time Traffic Management System capability and the following features:

(c) Bicycle Clearance Time Extension Pushbutton - When the pushbutton is pressed, it will call the signal system to provide an extended all-red clearance interval immediately following the green cycle termination. This call will be made whether the signal system is in an active green cycle for the direction of the call, or if it is a state of red. Pushbutton can be hardwired or be a wireless connection to the signal system.

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 7

00227.43(a) Location and Setup - Delete the sentence that begins “Do not install portable…”

Add the following subsection:

00227.43(e) Bicycle Clearance Time Extension Pushbutton - Locate the pushbutton installation with sign at the stop bar. Post mount the wired pushbutton. Wireless pushbutton may be post mounted or mounted on a TSS. Furnish a mount with a maximum 24 inch reach to pushbutton. If needed, provide manufacturer supplied pushbutton extension to achieve 24 inch reach.

00227.80 Measurement – Replace this subsection, except for the subsection number and title, with the following:

No measurement of quantities will be made for temporary traffic signals, portable traffic signals, temporary flashing beacons, or temporary illumination.

The Work Zone presence lighting system will be measured on the unit basis, for each complete system, where initially installed on the Project. A complete system consists of the number of flagger station lighting from the “PRESENCE LIGHTING SPACING TABLE” as shown.

00227.90 Payment – Replace the Pay Items (b), (c), (e) with the following Pay Item:

Pay Item Unit of Measurement

(c) Portable Traffic Signal ................................................................. Lump Sum

SECTION 00231 - TEMPORARY ACCESS ROAD

Section 00231, which is not a Standard Specification, is included in this Project by Special Provision.

Description

00231.00 Scope - This Work consists of constructing, and maintaining temporary, unpaved access roads for the use of Contractor and Agency Equipment and personnel as needed, shown, or directed.

Materials

00231.11 Geotextile - Furnish subgrade geotextile, embankment geotextile, or riprap geotextile, at the Contractor’s option. Geotextile shall meet the requirements of Section 02320, with documentation according to 02320.10(c).

00231.12 Geogrid - Subgrade reinforcement geogrid, if used, shall meet the requirements of Section 02320.

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 8

00231.13 Road Material - Furnish crushed Aggregate Base, stone embankment, or other suitable Granular Material capable of supporting the weight of Equipment intended to use the temporary access road.

Construction

00231.41 Clearing - Clearing brush and vegetation for temporary access roads is allowed in the areas shown or where directed. Preserve and protect trees as shown or directed.

00231.42 Temporary Access Road - Construct temporary access roads to the width, grade, profile, and depth of base sufficient to support the weight of Equipment using the road.

Install geotextile or geogrid prior to placement of road material.

00231.43 Not for Public Traffic - Do not direct or allow Public Traffic to use temporary access roads constructed according to this Section.

00231.44 Verification of Subgrade - In areas where permanent earthwork construction is required on ground that has been occupied by a temporary access road, rework or replace unstable Materials to avoid and correct, according to 00330.40(c), excessive stress or strain that could be detrimental to the Subgrade.

00231.45 Verification of Original Ground - Test the density of the original ground according to TM 158, in the presence of the Engineer, before beginning construction of the temporary access road and after removing it. If post-removal density testing indicates that the original ground has been weakened by construction activities, or the presence or use of the temporary access road, correct the deficient condition in an approved manner and at no additional expense to the Agency.

Maintenance

00231.60 Surface Maintenance - Maintain temporary access roads so that the road surfaces remain firm, smooth, free of ruts or standing water, and are graded to prevent concentrations of runoff water. Promptly remove accumulations of mud or debris.

Finishing and Cleaning Up

00231.70 General - When a temporary access road is no longer needed, do the following:

• Restore areas occupied by the temporary access road to the original ground contours where contours for temporary access road exceed 2H:1V, or as directed.

• Apply permanent seeding to the area occupied by the temporary access road according to Section 01030.

• Dispose of excess materials according to 00330.41(a)(5).

Measurement

00231.80 Measurement - Except for permanent seeding, no measurement of quantities will be made for Work performed under this Section.

Permanent seeding will be measured according to 01030.80.

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 9

Payment

00231.90 Payment - The accepted quantities of Work performed under this Section, except for permanent seeding work, will be paid for at the Contract Lump Sum amount for the item "Construct Temporary Access Road, __________".

The location of the access road will be inserted in the blank

Payment will be payment in full for furnishing and placing all Materials, and for furnishing all Equipment, labor, and Incidentals necessary to complete the Work as specified.

No separate or additional payment will be made for disposing of temporary access road materials or for restoring the areas to original ground contours.

Permanent seeding Work will be paid for according to 01030.90.

SECTION 00237 - AGENCY-PROVIDED STAGING AREAS

Section 00237, which is not a Standard Specification, is included in this Project by Special

00237.00 Scope - This Work consists of utilizing Agency provided prospective or mandatory staging areas as the Contractor elects or as required for the construction of the Contract.

Locate staging area(s) in previously improved area(s) that have been paved or compacted and graveled, unless otherwise shown or approved.

00237.01 Prospective Staging Areas - If the Contractor elects not to utilize the listed prospective staging area(s) or elects to use other or additional staging areas, 00290.10 applies.

(a) Prospective Staging Area:

• Source Number - OR- N/A

• Location - US101 MP303

• Access - Access via ‘Proposed East Access Road’ shown on sheet C01

• Available Area - 0.6 acres

If used, restore the site to preconstruction condition, as directed, by:

• Removing all imported fabric, rock, and other construction and non-combustible debris

• Removing all solid waste and hazardous materials, including spills, and dispose properly

• Removing work zone fencing

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 10

• Leveling and scarifying the ground

• Applying seed and mulch to all disturbed earth according to Section 01030

00237.40 General - All vehicles and Equipment, prior to entering the site for the first time, and each subsequent time if the vehicle has left the Roadway outside the construction Project limits, shall be steam cleaned of all debris (soil, dirt, plant parts, and vegetative matter) before being brought back to the site. Notify the Engineer before moving each vehicle onto the site.

Certify, in writing, that the Equipment has been steam cleaned.

00237.41 Restrictions and Protection of Resources - Comply with the following for all operations within the staging area operations:

• Protect cultural resources according to 00290.50.

• Protect migratory birds according to 00290.36(a).

00237.47 Staging Area Vacating - Before vacating the staging area(s) the following apply:

• Remove all structures, construction debris and trash, and equipment from the staging area.

• Remove solid waste and hazardous material from the site and dispose of properly.

Provide documentary evidence of proper disposal and verify the amount of material removed.

• If a spill or dumping has occurred or if a spill or dumping is suspected to have occurred, 00290.20(3)(g) applies.

• Attend a post-work meeting at each staging area to evaluate staging area rehabilitation work with the Engineer.

00237.80 Measurement - No measurement of quantities will be made for Work performed under this Section.

00237.90 Payment - No separate or additional payment will be made for Work performed under this Section.

SECTION 00245 - TEMPORARY WATER MANAGEMENT

Section 00245, which is not a Standard Specification, is included in this Project by Special Provision.

Description

00245.00 Scope - This Work consists of furnishing, installing, operating, maintaining, and removing temporary water management facilities in regulated Work areas.

00245.01 Abbreviations:

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 11

TWM - Temporary Water Management TWMF - Temporary Water Management Facility TWMP - Temporary Water Management Plan

00245.02 Definitions:

Temporary Water Management Facility - A TWMF that conveys water around or through Work areas, removes water from Work areas, and treats and discharges water at locations outside Work areas.

00245.03 Temporary Water Management Plan - The Agency TWMP is a concept plan.

28 Calendar Days before beginning Work in regulated Work areas, submit stamped Working Drawings of a Contractor-developed TWMP, according to 00150.35, based on either the Agency’s concept plan or an independent plan that meets water quality and environmental guideline requirements and does not negatively affect neighboring properties or water rights.

Include the following minimum information in the TWMP:

• The sequence and schedule for dewatering and re-watering. This sequence and schedule must include when to contact the Engineer prior to dewatering and re-watering.

• How the Work area is isolated from the active stream flow upstream, through, and downstream.

• How the stream flow is routed and conveyed around or through the isolated Work area.

• How fish passage is provided around the Work area, if required.

• How the isolated Work area is de-watered.

• How the pumped water is treated, if necessary, before it is discharged downstream.

• Description of all construction stages, including appropriate contact points for each stage.

• A list of on-site backup Materials and Equipment.

• Provide the name of the TWM Subcontractor (if applicable) and Contractor’s superintendent, and their 24-hour contact phone number 10 Days before the pre-Work meeting. If changes in the appointment of the TWM Subcontractor or Contractor’s superintendent occur during the term of the Contract, provide written notice to the Engineer within 5 Calendar Days of the change.

• Calculations of water withdraw pump’s capacity.

• Details of the proposed water intake screen used to isolate in-water Work area and how it meets the requirements of 00290.34(c)(3).

Any change to the TWMP during construction requires approval prior to implementation.

Obtain the Engineer's written approval before beginning Work in in-water Work areas.

00245.04 Pre-Work Meeting - Before beginning any TWM Work, attend a pre-work meeting at the Project Site with the Engineer no more than 8 Calendar Days prior to implementation of TWM. Required meeting attendees include:

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 12

• Engineer

• Contractor

• TWM Subcontractor (if applicable)

• Agency Environmental Coordinator or their appointed representative

The pre-Work meeting agenda typically includes the method of TWM, the TWMP, fish salvage plan and strategy, describe environmental risks, turbidity monitoring, energy dissipation, dewatering and re-watering plan and strategy, site clean-up expectations, and the circumstances under which contacting the Engineer is required.

00245.10 Materials - Furnish Materials meeting the following requirements:

Pipe ..................................................................... 00445.11 Plastic Sheeting ............................................... 00280.14(a) Sandbags ........................................................ 00280.15(a)

Furnish pumps that are:

• Self-priming.

• Equipped with a variable speed governor.

• Equipped with a power source.

• Able to pump water that contains soft and hard solid.

00245.40 Fish Removal - Qualified Agency, ODFW, or ODOT consultant biologists will remove fish and other aquatic organisms from the isolation Work areas. Coordinate fish removal with the Engineer at least 28 Calendar Days before beginning Work in regulated Work areas. Allow access into the isolation Work areas before, during and after installation of the TWMF to perform the specified tasks as follows:

• Before Installation of TWMF - Before any in-water Work, including installing TWMF, qualified personnel will remove fish and other native aquatic organisms from within the proposed isolated Work area.

• After Installation of TWMF - After installing TWMF and the reduction of the water level through the isolated Work area has begun, qualified personnel will remove all fish and aquatic organisms as the water level is reduced. Do not completely de-water the isolation area until all fish and aquatic organisms have been removed.

00245.41 Installation - During installation of the temporary water management facility, maintain a downstream water flow rate of at least 50 percent of the upstream water flow rate.

00245.42 Operation - Operate temporary water management as follows:

• Protect fish and fish habitat according to 00290.34.

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 13

• Maintain and control water flow downstream of the isolated Work area for the duration of the diversion to prevent downstream de-watering.

• Clean, maintain and repair water intake screening to ensure adequate flows and protection of aquatic organisms.

• In the event of containment failure immediately notify the Engineer so arrangements can be made to remove fish and aquatic organisms from the isolation Work areas prior to the continuation of Work within the ordinary high water limits.

• When using a pump for bypassing water during temporary water management, physically monitor the pump in-person and maintain the pump at all times including non-work hours. Provide a back-up pump on-site and ready for use as necessary.

Provide the Engineer with a daily report documenting monitoring activities.

Maintenance

00245.60 Maintenance - Monitor water turbidity according to 00290.30(a)(8).

Finishing and Cleaning Up

00245.70 Removal - Prior to removal of the TWMF, obtain approval from the Engineer after completion of all Work within ordinary high water limits. Remove the TWMF and re-water and restore the stream flow. Maintain downstream water flow during removal of the facility. Staged or metered re-watering may be required and will be determined by the Engineer.

Measurement

00245.80 Measurement - No measurement of quantities will be made for temporary water management facilities.

The estimated quantities of Materials required for the temporary water management facility are:

Temporary Water Management Facility at Station “A” 24+00 :

Pipe ...................................................................... 750 Feet Plastic Sheeting ....................................... 200 Square Yard Sandbags .......................................................... 5,200 Each

The quantities of bypass pump monitoring will be measured on the time basis, of the actual number of Days the bypass pump is in operation and a daily monitoring report is received.

Turbidity monitoring will be measured according to 00290.80.

Payment

00245.90 Payment - The accepted quantities of temporary water management facilities will be paid for at the Contract lump sum amount for the item "Temporary Water Management Facility at Station _______ ".

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 14

The location of the facility will be inserted in the blank.

The accepted quantities of bypass pump monitoring will be paid for at the Contract unit price, per Day, for the item “Bypass Pump Monitoring”.

Payment will be payment in full for furnishing and placing all Materials, and for furnishing all Equipment, labor, and Incidentals necessary to complete the Work as specified.

Turbidity monitoring will be paid for according to 00290.90.

No separate or additional payment will be made for TWMP, maintaining, operating, monitoring, moving, or removing the facility.

SECTION 00280 - EROSION AND SEDIMENT CONTROL

Comply with Section 00280 of the Standard Specifications modified as follows:

00280.00 Scope - Replace the paragraph that begins "This Work also consists of providing temporary …" with the following paragraph:

This Work also consists of providing temporary erosion and sediment control (ESC) measures and furnishing, installing, moving, operating, maintaining, inspecting, and removing ESC throughout the Project area according to the Standard Drawings, the erosion and sediment control plan (ESCP), the Specifications, or as directed, until the site is permanently stabilized. Included also is the monitoring of weather, of stormwater and receiving waters, the reporting of monitoring observations, the reporting of corrective actions (when necessary) and the updates and revisions of the ESCP, including ESCP cover sheet, necessary to keep it representative of current site conditions and compliant with the NPDES 1200-CA, 1200-CN, OR 1200-C permit if applicable.

Delete the paragraph that begins “When contaminants, pollutants or hazardous materials…”.

Add the following paragraph to the end of this subsection:

The Agency's NPDES 1200-CA permit is applicable to the Project.

00280.02 Definitions - Delete the definition Wet Season Work

00280.04 Erosion and Sediment Control Plan on Agency Controlled Lands - Replace the bullet that begins “Information required under 1200-CA…” with the following bullet:

• Information required under 1200-CA permit, if applicable.

Add the following paragraphs to the end of this subsection:

Fill in required information listed on the ESCP cover sheet prior to beginning of construction and submit revised cover sheet to Engineer 10 Days before the preconstruction meeting.

Monitor weather, stormwater runoff, and receiving waters, and document monitoring observations. Immediately upon discovery, notify Engineer if a 1200-CA permit non-

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 15 compliance occurs. Provide updates and revisions of the ESCP, including ESCP cover sheet, necessary to keep it representative of current site conditions and compliant with the 1200- CA permit.

When contaminants, pollutants or hazardous materials are discovered in the Project location in soils or groundwater comply with 00290.20(f) and, provide an environmental management plan (EMP) as required by the 1200-CA permit if applicable.

00280.16(k) Active Treatment System – Add the following sentence to the end of this subsection:

Obtain approval of the active treatment system from DEQ prior to use.

00280.30 Erosion and Sediment Control Manager – Add the following bullet to the beginning of the bullet list under “The ESCM duties include:”

• Be present at the Project Site during all ground disturbing activities.

Replace the bullet that begins “Monitor rainfall, snow melt and runoff …” with the following bullet:

• Visually monitor rainfall, snow melt and runoff at the Project Site.

Replace the bullet that begins “Monitor water quality in receiving streams in …” with the following bullet:

• Visually monitor water quality in receiving streams in the vicinity of the Project Site.

Replace the bullet that begins “Monitor water in sediment traps receiving …” with the following bullet:

• Monitor the pH of the water in sediment traps receiving runoff from soils amended with cementitious material for acidity or alkalinity.

Add the following bullet to the end of the bullet list:

• Monitor locations identified in Section 00294 for compliance.

00280.41(c) Wet Season Work and Temporary Work Suspension - Replace this subsection with the following subsection:

00280.41(c) Temporary Work Interruption - Update the ESCP and schedule for Work proposed between October 1 and May 31 to ensure that all appropriate controls, including ESC during Work interruption, are implemented and maintained. Submit the updated ESCP and schedule to the Agency and receive approval before beginning any Work between October 1 and May 31.

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 16

Between October 1 and May 31, limit excavation and bare ground activities to only those required for immediate operations. Stabilize stockpiles at the end of each workday by diverting flows, placing covers, or installing Sediment barriers.

00280.41(f) Hauling Material – Replace this subsection, except for the subsection number and title, with the following:

Cover loads carrying soil or sediment which may generate dust. Haul saturated loads in water tight beds or drain saturated loads prior to leaving the Project Site.

00280.41(g) Underground Injection Controls (UIC) – Replace this subsection, except for the subsection number and title, with the following:

Do not allow storm water from work area to enter Underground Injection Control (UIC) inlets, UIC catch basins or UIC wells.

00280.48 Emergency Materials - Add the following paragraphs after the paragraph that begins "Provide, stockpile, and protect...":

Provide and stockpile the following emergency Materials on the Project Site:

Item Quantity

Plastic Sheeting .......................................... 3,000 Sq. Yds.

Temporary Mulching, Straw ................................ 0.5 Acres Compost Erosion Blanket ............................ 1,500 Sq. Yds.

Straw Bale .......................................................... 100 Each

When emergency materials are used, restock emergency materials within 48 hours of use.

00280.62 Inspecting and Monitoring – Delete the paragraph that begins “Inspect the Project Site…”.

00280.62(a) Inspection - Replace the paragraph that begins "Perform site inspection, complete…" with the following paragraph:

Inspect the Project Site and all ESC devices for Effective Function and potential erosion or sediment movement and complete all applicable parts of the ODOT Erosion Control Monitoring Form, and submit the form to the Agency as follows:

00280.62(b) Rainfall – Add the following to the end of this subsection:

The closest on-line rain gauge is located at:

forecast.weather.gov/MapClick.php?lat=43.4194&lon=- 124.2437&unit=0&lg=english&FcstType=graphical

00280.64(a) Corrective Action Timelines – Delete the bullet that begins “If completion of corrective action is not feasible…”

Delete the bullet that begins “Provide a schedule for clean-up and corrective actions…”

Delete the bullet that begins “Provide all corrective action documentation and photographs…”

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 17

00280.64(b) Corrective Action Documentation – Add the following bullets to the beginning of the bullet list:

• If completion of corrective action is not feasible within 24 hours, document the reasons why the time line cannot be met.

• Provide a schedule for clean-up and corrective actions that restores Effective Functioning as soon as feasible. If schedule cannot be met document the reasons for the delay.

• Provide all corrective action documentation and photographs to Agency within 24 hours of completion of corrective actions.

00280.91 Payment – Replace the paragraph that begins “Emergency Materials that are incorporated…” with the following paragraph:

Materials listed in 00280.48 that are incorporated into the Project will be paid for under the appropriate items listed in the Contract Schedule of Items.

SECTION 00290 - ENVIRONMENTAL PROTECTION

Comply with Section 00290 of the Standard Specifications modified as follows:

00290.10 Staging and Disposal Sites – Replace the paragraph that begins “Locate staging areas…” with the following paragraph:

Locate staging areas and disposal sites in previously improved or disturbed sites, including existing Roadways, pullouts, turnouts, parking lots, and storage yards that have been compacted, and graveled or paved, unless otherwise specified in Section 00237 or approved, in writing, by the Engineer.

Add the following subsection:

00290.30(a)(7) Water Quality:

• Do not discharge water contaminated by pollutants including sediment, drilling fluids and waste, concrete, grout, or water contained within a work area isolation, into any waters of the State or U.S. or conveyances draining thereto until it has been treated using Materials such as those listed in 00280.15 or 00280.16 or by pumping to a vegetated upland location. Do not allow Project discharges to increase the concentration of any pollutant in the receiving water to a level that exceeds the limits prescribed by OAR 340-041.

• Do not use permanent stormwater quality treatment facilities to treat construction runoff unless prescribed by an ESCP approved under Section 00280.

• If construction discharge water is released using an outfall or diffuser port, do not exceed velocities more than 4 feet per second, and do not exceed an aperture size of 1 inch.

• Implement containment measures adequate to prevent pollutants from entering waters of the State or U.S. Such pollutants include but are not limited to construction and

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 18 demolition materials, waste spoils, fuel or petroleum products, detergents, silt, welding slag and grindings, concrete sawcutting by-products and sandblasting abrasives.

• Do not allow curing concrete or grout to be submerged within waters of the State or U.S. less than 24 hours after placement, except within work area isolation. Do not end-dump riprap into the waters of the State or U.S. Place riprap from above the ordinary high water line.

• Monitor weather and streamflow forecasts and conditions to anticipate high flows that may unintentionally inundate any portion of the Project Site.

• If high flow conditions occur or are anticipated to occur that may unintentionally inundate any portion of the Project Site, remove all potentially affected Equipment, Materials, and debris from the potential inundation area. Cease Work in the area until water recedes and the risk of further high water events passes. The Engineer retains the authority to temporarily halt or modify the Work in case of excessive turbidity or damage to natural resources.

• If Work in or around waters of the State or U.S. violate permit conditions or any requirement of this subsection, stop such Work and notify the Engineer.

Add the following subsection:

00290.30(a)(8) Meter Turbidity Monitoring - In addition to the requirements of 00280.62(c) to monitor the receiving stream to identify water quality issues, during Work in waters of the State or U.S., implement best management practices (BMPs) to minimize turbidity, and monitor turbidity using a turbidity meter that has been maintained and calibrated according to the manufacturer’s specifications and according to the following:

• Measure upcurrent and downcurrent turbidity at two-hour intervals and perform work based on turbidity measurements according to the following:

• Take upcurrent samples at a location representative of background turbidity approximately 100 feet from the work area.

• Take downcurrent samples at a location approximately 100 feet from the work area at approximately mid-depth of the water body and within any visible turbidity plume.

• If the downcurrent reading is less than 5 nephelometric turbidity units (NTU) higher than the upcurrent reading, continue to Work and take readings every two hours.

• If the downcurrent reading is greater than or equal to 5 and less than 30 NTU higher than the upcurrent reading, modify work procedures and repair or upgrade BMPs, continue Work, and continue to take readings every two hours. If after four hours the downcurrent reading is still greater than or equal to 5 NTU higher than the upcurrent reading, stop all work in water and repair or upgrade BMPs. Resume work in water only after the downcurrent reading is less than 5 NTU above the upcurrent reading.

• If the downcurrent reading is greater than or equal to 30 and less than 50 NTU higher than the upcurrent reading, modify work procedures, repair or upgrade BMPs and continue Work. If, at the subsequent two-hour reading, the downcurrent reading is still more than 30 NTU higher than the upcurrent reading, stop all work in water and repair or upgrade BMPs. Resume work in water only after the downcurrent reading is less than 5 NTU above the upcurrent NTU reading.

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 19

• If the downcurrent reading is 50 NTU or more higher than the upcurrent reading, stop all work in water, repair or upgrade BMPs, and inform the Engineer. Resume work in water only after the downcurrent reading is less than 5 NTU above the upcurrent NTU, as determined by continued readings made no more than two hours apart.

• Document all turbidity monitoring observations on form 734-2755, “Turbidity Monitoring Report”, or another form approved by the Engineer. Submit reports to the Engineer weekly during work in water and keep copies of the reports at the Project Site.

• Meter turbidity monitoring may be temporarily suspended if all of the following conditions are met:

• Temporary water management and work area isolation measures have been installed and are functioning as designed.

• The Engineer, after consultation with DEQ, has authorized the suspension of turbidity monitoring. The Engineer will provide information to be documented on the turbidity monitoring form, including the date of the DEQ authorization and the name of the DEQ employee providing the authorization.

• Resume the turbidity monitoring protocol if Work during a temporary suspension of meter turbidity monitoring causes a release of a visible turbidity plume.

00290.34 Protection of Fish and Fish Habitat - Add the following paragraph:

Meet with the Agency Biologist, Resource Representative, Engineer, and inspector on site, before moving equipment on-site or beginning any work, to ensure that all parties understand the locations of sensitive biological sites and the measures that are required to be taken to protect them.

00290.34(a) Regulated Work Areas - Add the following to the end of this subsection:

The regulated work area is defined as the area at or below the ordinary high water (OHW) elevation. The Engineer will identify and mark the regulated work area.

Perform work within the regulated work area only during the in-water work period. The in-water work period is from July 15 to October 31.

The total volume of material filled or discharged into waters of the State and waters of the U.S. shall not exceed 101.9 cubic yards.

The total volume of material excavated from the waters of the State and waters of the U.S.

shall not exceed 10.4 cubic yards.

Submit a schedule to complete all work within the regulated work area within the in-water work period at least 10 Days prior to the preconstruction conference.

Add the following subsection:

00290.34(c) Aquatic Species Protection Measures Required by Environmental Permits:

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 20

(1) General Requirements:

• Do not install fish ladders (for example: pool and weirs, vertical slots, fishways) or fish trapping systems.

• Do not apply surface fertilizer within 50 feet of any stream channel.

Use heavy equipment as follows:

• Choice of equipment must have the least adverse effects on the environment (for example: minimally sized, low ground pressure).

• Secure absorbent material around all stationary power equipment (for example:

generators, cranes, drilling equipment) operated within 150 feet of wetlands, waters of the State, waters of the U. S., drainage ditches, or water quality facilities to prevent leaks, unless suitable containment is provided to prevent spills from entering waters of the State or waters of the U.S.

• Do not cross directly through a stream for construction access, unless shown or approved. If shown or approved, cross perpendicular to the stream and do not block stream flow. When a crossing is no longer needed, completely remove the crossing and restore the soils and vegetation to the original condition.

• Store fuel and maintain all equipment in staging areas that are at least 150 feet away from any waters of the State, waters of the U.S., or storm inlet or on an impervious surface that is isolated from any waters of the State, waters of the U.S., or storm inlet.

• If temporary access roads are needed within 150 feet of any body of water, use existing routes unless new routes are shown or approved.

• Before beginning work on temporary access routes that are not shown, submit a proposal to the Engineer for approval.

(2) Work Area Isolation - Provide work isolation according to Section 00245. Provide safe passage around or through the isolated work area for adult and juvenile migratory fish unless passage did not previously exist.

(3) Water Intake Screening - Install, operate, and maintain fish screens on each water intake used for project construction, including pumps used to isolate an in-water work area. When drawing or pumping water from any stream, protect fish by equipping intakes with screens having a minimum 27 percent open area and meeting the following requirements:

• Perforated plate openings shall be 3/32 inch or smaller.

• Mesh or woven wire screen openings shall be 3/32 inch or smaller in the narrowest direction.

• 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 in Table 00290-1:

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Table 00290-1

Type Approach Velocity 1 (Ft./Sec.)

Sweeping Velocity 2 (Ft./Sec.)

Wetted Area of Screen (Sq. Ft.)

Comments

Ditch Screen ≤ 0.4 Shall exceed approach velocity

Divide max. water flow rate (cfs) by

0.4 fps

If screen is longer than 4 feet, angle 45° or less to stream flow

Screen with proven self-cleaning system ≤ 0.4 –

Divide max. water flow rate (cfs) by

0.4 fps

Screen with no cleaning system other than manual

≤ 0.2 – Divide max. water flow rate (cfs) by

0.2 fps

Pump rate 1 cfs or less

1 Velocity perpendicular to screen face at a distance of approximately 3 inches 2 Velocity parallel to screen

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

(4) Site Restoration - Restore damaged streambanks to a natural slope, pattern, and profile suitable for establishment of permanent woody vegetation unless precluded by pre-project conditions (for example: natural rock substrate):

• Replant all damaged streambanks before the first April 15 following construction.

• 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.

• Stabilize all disturbed soils, including obliteration of temporary access roads, following any break in work unless construction will resume in 4 Calendar Days.

(5) Drilling, Boring, or Jacking - If drilling, boring, or jacking is used, the following conditions apply:

• 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.

• Isolate drilling operations from wetted stream to prevent drilling fluids from contacting waters of the State or waters of the U.S.

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 22

• Use casing to prevent loss of drilling fluid to the subsurface formation. Do not drill without a containment method to keep drilling fluids and slurry isolated.

• If it is necessary to drill through an over-water bridge deck, use containment measures to prevent drilling debris from entering the stream channel.

• 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 Engineer to resume drilling.

• 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.

• Recycle drilling fluids using a tank instead of drill recovery/recycling pits, whenever feasible.

• 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.

00290.36(a) Migratory Birds - Add the following to the end of this subsection:

(1) Bird Management - Bird management activities to comply with the Migratory Bird Treaty Act (16 U.S.C. 703 712) will be performed by the Agency. Ensure that the Agency and its permitted agents have access to the project area, as needed to prevent migratory bird nesting. Nesting prevention may include daily bird harassment and the installation and maintenance of devices that exclude birds.

Do not disturb migratory bird nesting habitats (shrubs, trees, and structures), or clear vegetation from March 1 to September 1 of each calendar year without prior written approval from the Engineer. Notify the Engineer, in writing, a minimum of 10 Calendar Days prior to starting activities that could harm nesting birds.

00290.41 Protection of Waters of the U.S. or State - Add the following to the end of this subsection:

Permits have been obtained for this project from the US Army Corps of Engineers (Corps) .

Keep a copy of Corps permit at the project site during construction. Changes to the project that may increase the amount of fill placed or material removed in waters of the U.S. or State, or the acreage of waters impacted are not authorized. The following waters of the U.S. or State are present and have been determined to be unavoidable as indicated in Table 00290- 2:

SPSM22022, US 101: MP 303.06 Emergency Culvert Repair Project 23

Table 00290-2

Impact Waters of the US or

State

Removal Volume (cu yds.)

Fill Volume

(…