SWPPP_IWPPP-signed.pdf

STORM WATER POLLUTION PREVENTION PLAN

(SWPPP)

AND

IN-WATER POLLUTION PREVENTION PLAN (IWPPP)

Project Title: Seismic Retrofit, Haleakala Highway Route 377, Waiale Gulch, Alae (Naalae Gulch) and Pulehu Gulch

(Pohakuokala) Bridges

Project No.: STP-0377(008)

DOH WQC1100.FNL.25

DA File No. POH-2024-00181 DA File No. POH-2026-00074 DA File No. POH-2026-00075

DOH NGPC File No. HIR10I121

Prepared by: Department of Transportation, Highways, Design Branch Date: July 24, 2026

SWPPP/IWPPP

Seismic Retrofit, Haleakala Highway Route 377, Waiale Gulch, Alae (Naalae Gulch) and Pulehu

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Storm Water Pollution Prevention Plan (SWPPP) and In-Water Pollution Prevention Plan (IWPPP)

DOH WQC1100.FLN.25

DA File No. POH-2024-00181 DA File No. POH-2026-00074 DA File No. POH-2026-00075

Notice of General Permit Coverage (NGPC) File No. HIR10I121 Preparation Date 07/28/26

Table of Contents Table of Contents

7.0 Preface

7.0.1 Notes for Contractor/HDOT Construction Personnel

7.2.1A (WQC Section 5) - Emergency Contacts

7.2.1 Storm Water Team

7.2.2A (WQC Section 1) - Army Corps Pre-Construction Notification

7.2.2 Nature of Construction Activities NOI Form C.6

7.2.2B (WQC Section 10 and Section 12) – Receiving State Water(s) Information 7.2.2C (WQC Section 12) – Project Scope

7.2.3 Emergency Related Projects

7.2.4 Identification of Prime Contractor and Other Site Contractors

7.2.5 Sequence and Estimated Dates of Construction Activities

7.2.6.1 Property Boundary Maps

7.2.6.1A (WQC Section 1) - Jurisdictional Waters of the U.S. (Army Corps Jurisdiction)

Boundary Maps

7.2.6.2 to 7.2.6.8 State Waters and BMP Maps

7.2.7 Construction Site Pollutants

7.2.8 –Sources of Non-Storm Water

7.2.9 –Buffer Documentation

7.2.10 Storm Water Control Measures

Land Based BMP Details In-Water BMP Details (WQC)

7.2.10.2 – Stabilization Practices

7.2.10.3 – Post Construction Measures

7.2.11.1 – Spill Prevention and Response Procedures

7.2.11.2 – Waste Management Procedures

7.2.12 – Procedures for Inspection, Maintenance, and Corrective Action for Land-Based Work

Areas 7.2.12A (WQC) – Procedures for Inspection, Maintenance, and Corrective Action for In-Water

Work Areas

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7.2.12B (WQC) – Procedures for In-Water Work Areas During High Flow and Stop Work Conditions

7.2.13 – Staff Training

7.2.14 – Documentation of Compliance with Safe Drinking Water Act Underground Injection

Control (UIC) Requirements for Certain Subsurface Storm Water Controls

7.2.15 –Other State, Federal, or County Permits

7.2.16 –Other Information As Requested by the Director

7.2.17 Certification of the CWB SWPPP/IWPPP

7.2.18 Post-Authorization Additions to the SWPPP/IWPPP

7.4 Required SWPPP/IWPPP Modifications

13.0 Monthly Compliance Report Submittal Requirements

SWPPP/IWPPP Attachments

Attachment A – Contractor/Sub-Contractor Control Maps, Property Boundary Maps, State Waters and BMP Maps, and BMP Details (SWPPP/IWPPP Sections 7.2.4, 7.2.6.1,7.2.6.2 to 7.2.6.8 & 7.2.10)

Attachment B – HDOT SWPPP/IWPPP Training Log (SWPPP/IWPPP Section 7.2.13) Attachment C - Construction Schedule (SWPPP/IWPPP Section 7.2.5) Attachment D – Subcontractor Certifications/Agreements (SWPPP/IWPPP Section 7.2.4) ... 89 Kauai/Maui/Hawaii Attachment E1 – HDOT SWPPP Inspection Report for Kauai, Maui, and

Big Island Land-Based BMPS Statewide Attachment E2 – HDOT Inspection Report for In-Water Work (IWPPP Section

7.2.12A) Attachment F – Spill Prevention and Response Procedures (SWPPP/IWPPP Section 7.2.11.1)

Attachment G – Waste Management Procedures (SWPPP/IWPPP Section 7.2.11.2) Attachment H – Emergency Related Projects, Departures from Manufacturer’s Specifications for Fertilizers Containing Nitrogen or Phosphorus, Buffer Documentation, Documentation of Compliance with UIC Requirements, Other State/Federal/County Permits, Fugitive Dust Control Plan & Other Information as Requested by the Director (SWPPP/IWPPP Sections 7.2.3, 7.2.9, 7.2.14, 7.2.15, and 7.2.16)

Attachment I – Corrective Action Report Attachment J – Monthly Compliance Report Attachment K – Post-Authorization Additions to the SWPPP/IWPPP (Including Army Corps

PCN, 401 WQC, and Special Conditions) Attachment L – SWPPP/IWPPP Modification Log

7.0 Preface

The following documents are referenced throughout the SWPPP/IWPPP:

1) Hawaii Administrative Rules, Chapter 11-55

2) HDOT Construction Best Management Practices Field Manual

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3) Hawaii Standard Specifications for Road and Bridge Construction dated 2005 and applicable special provisions.

4) An Integrated Storm Water Management Approach and a Summary of Clear Water Diversion and Isolation Best Management Practices for Use in the State of Hawaii, by the Department of Transportation and Federal Highway Administration, Practitioners Guide (Practitioners Guide), April 2016 (Version 1, Draft)

7.0.1 Notes for Contractor/HDOT Construction Personnel

Items in red need to be updated by the Contractor once the project is awarded prior to construction. The Contractor shall be responsible for updating the SWPPP/IWPPP during construction.

The Contractor shall implement or modify structural BMPs identified by designer in site plan.

The Contractor shall design and implement the in water isolation and confinement BMPs for areas within the Army Corps Jurisdiction.

The Contractor shall keep an accurate account of the type(s) and estimated quantities (in cubic yards) of the BMPs placed and/or installed within the in-water work area (i.e. canal, stream, river), particularly any type of dredged and/or fill material (e.g., sand, soil, rock, gravel, concrete, etc.)

discharged below the HTL/MHHW elevation used to divert flow/tidal waters away from in-water work areas, or to construct temporary access ramps, or for any other purpose in-water work areas.

Contractor Staging/Storage Areas

HDOT has permitted all outfalls and disturbed potential Contractor Staging/Storage Areas within the project limits.

The Contractor may use any disturbed area acceptable to the Engineer for Staging/Storage.

Staging/Storage Areas outside disturbed areas or outside the project limits may require a new National Pollutant Discharge Elimination System (NPDES) Permit submittal. See permitting requirements in Section 209 of the Specifications and applicable Special Provisions.

The following applies to construction areas discharging to all outfalls:

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1) Construction BMPs shall be inspected weekly, and within 24 hours of any rainfall event of 0.25 inches or greater in a 24 hour period and daily during periods of prolonged rainfall. For more details see Section 7.2.12 of this SWPPP/IWPPP.

2) Immediately initiate and complete stabilization within 7 calendar days on areas of the site in which earth-disturbing activities have temporarily or permanently ceased. For more details See section 7.2.10.2 of the SWPPP/IWPPP.

The following applies to construction areas discharging to Alae Stream:

A variety of best management practices (BMPs) will be implemented to protect Waters of the U.S. from stormwater and non-stormwater related discharge or discharge from the construction site. In addition to the BMPs listed below, refer to BMPs identified in the Practitioners Guide. BMPs will be detailed in the storm water pollution prevention plan (SWPPP) and updated In-water pollution prevention plan (IWPPP) processes. These include:

1) Comply with all requirements of the water quality standards in the Hawaii Administrative Rules (HAR), Chapter 11-54, and the Section 401 Water Quality Criteria (WQC) and all information submitted to the State of Hawaii Department of Health-Clean Water Brank (DOH-CWB) for compliance with the Notification and Reporting Requirements. Ensure that the activity will not result in non-compliance or violations to the applicable State WQS. Discharges associated with the proposed construction activities will be conducted in a manner that complies with "Basic Water Quality Criteria Applicable to All Waters" as specified in HAR, Chapter 11-54-4.

2) Obtain NPDES permit for storm water discharges associated with construction activities when the proposed construction activities will disturb one (1) or more acres of land area before initiating any construction activities.

3) Apply best degree of treatment or control measures to the potential water pollutant discharges associated with the proposed construction activity (ies) that assures the discharges will meet requirements compatible with the basic water quality criteria applicable to all waters, uses and specific water quality criteria and recreational criteria established for the class of the receiving State waters. Best Management Practices (BMPs) shall be properly implemented and maintained during the entire construction period. Isolate and confine all in-water work areas throughout the entire water column (surface to bottom) such that all potential water pollutants will not leave or enter the work area. The entire volume of water in the in-water work area

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4) Deploy all BMPs around the perimeter of the project prior to the commencement of any construction work. These BMPs will be properly maintained throughout the entire period of in-water work and will not be removed until the in-water work is completed and the water quality in the in-water work area has returned to its pre-construction condition as demonstrated by the monitoring results (if applicable).

5) Isolate and confine in-channel construction activities using a of stream diversion method chosen by the contractor using the Practitioners Guide.

6) Isolate and confine all upland activity to contain and retain water pollutants upland and not allow them to enter State waters, including the designated in-water work area. When it is necessary to conduct stream work, the workspace shall be isolated to avoid construction activities in flowing water in compliance with Practitioners Guide.

The proposed project shall maintain aquatic organism passage (AOP) through the project area. Adequate water depth and channel width must be maintained at all times for passing design flood discharges. Prior to construction activities, isolate the workspace from flowing water to prevent sedimentation and turbidity and avoid impacts to aquatic organisms and water quality. The diversion or isolation BMPs shall remain in place during the life of the project and be removed immediately after work is completed in a manner that would allow flow to resume with the least disturbance to the substrate.

7) For a stream, ditch, or gulch allow unimpeded flow around the isolated and confined in-water work area to allow for aquatic animal migration and/or to prevent downstream flooding situations. The unimpeded flow shall be equivalent to the 2-year 24-hour duration storm event and/or the existing flow capacity of the waterbody, whichever is smaller.

8) Collect water pollutants from localized work areas and do not allow these water pollutants to enter or re-enter State waters, including the in-water work area.

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9) Construction debris will be contained and prevented from entering or re-entering State waters. During bridge removal, construct structurally adequate debris shields to contain debris. Do not permit debris to enter waterways, travel lanes open to public traffic, or areas designated not to be disturbed. If portions of the existing bridge do fall into a stream during demolition, they will be removed from the stream without dragging the material along the streambed.

10) Immediately cease construction work if water quality monitoring or daily inspection or observation results indicate that noncompliance to HAR, Chapter 11-54-4(a) or Chapter 11-54-4(b), will occur or is occurring. The construction activity shall not resume until adequate measures are implemented and appropriate corrective actions are taken and water quality monitoring demonstrates that the non-compliance has ceased. Note: These actions shall not preclude the DOH-CWB from taking enforcement action authorized by law.

11) Do not disturb the area beyond the construction limits. Trees, shrubs or vegetated areas temporarily damaged by construction operations will be re-vegetated.

12) Apply permanent soil stabilization as soon as practicable after final grading but no later than 14 days, or 7 days for impaired waters, after completion of earth disturbing activities.

13) Apply turf establishment to finished slopes and ditches immediately but no later than 7 days after completion of earth disturbing activities.

14) Provide certified weed free permanent and temporary erosion control measures to minimize erosion and sedimentation during and after construction according to the contract erosion control plan, contract permits, and Special Provision Sections 209, 619 and 641.

15) Protect and care for seeded areas, including watering when needed until final acceptance. Repair all damages to seeded areas by reseeding, re-fertilizing and re-mulching.

16) Ensure that all temporarily constructed structures, such as the silt containment device(s), floating oil and grease as well as construction debris containment device(s), berm, cofferdam, sheet pile, stream flow diversion structure(s), and/or

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17) Ensure that the proposed construction activities related discharges not covered under the NWPs will also comply with State water pollution control permitting requirements under NPDES as established in HAR, Chapter 11-55.

18) Pesticide application in State waters shall comply with HAR, §§11-54-4(a), 11-54- 4(b), 11-54-4(c), 11-54-4(f) and/or Chapter 11-55, Appendix M - NPDES General Permit Authorizing Point Source Discharges from the Application of Pesticides.

19) Ensure that no concrete truck wash water is disposed by percolation into the ground.

20) Maintain and require all of their contractor(s) and the subcontractor(s) that are performing work covered under this Section 401 WQC, to maintain at the construction site or in the nearby field office, a copy of this letter, all Notification and Compliance Reporting Requirements, and all records demonstrating that every requirement of this Section 401 WQC has been complied with.

21) Ensure that all areas temporarily impacted, either directly or indirectly, by the project construction activities are fully restored to its pre-construction conditions.

For example: Incidental construction debris is cleaned up prior to removal of BMPs.

22) Discontinue work during storm events or during flood condition.

23) Modify environmental protection measures, including BMPs and monitoring requirements, when instructed by the DOH-CWB for corrective action/remedial actions.

24) Allow the DOH-CWB to conduct routine inspections of the construction site in accordance with Hawaii Revised Statutes (HRS) §342D-8.

25) Complete and submit a Solid Waste Disclosure Form for Construction Sites to the DOH, Solid and Hazardous Waste Branch, Solid Waste Section. The form can be downloaded at: http://health.hawaii.gov/shwb/files/2013/06/swdiscformnov2008.pdf.

26) Do not stockpile, store, or place construction material or construction activity-related materials in State waters or in ways that will disturb or adversely impact the aquatic environment.

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27) Dispose of construction debris, waste products, vegetation and/or dredged material removed from the construction site at upland State and County approved sites.

28) Contain on land and not allow to enter or re-enter State waters any runoff, return flow, or airborne particulate pollutants, if any, from the excavated/dredged material dewatering process or from the stockpiling site.

29) Ensure that their discharge activity shall not interfere with or become injurious to any designated uses (HAR, §11-54-1 and HAR, §11-54-3), or existing uses (HAR, § 11-54-1 and HAR, § 11-54-1 .1). The owner of the discharge shall maintain and protect all designated and existing uses.

30) Do not discharge any effluent associated with the proposed construction activities, such as dewatering effluent, effluent resulting from hydroblasting, saw cutting, concrete surface preparation, rock washing, concrete and rock truck washing effluent or any other similar regulated activity(ies) shall be properly contained, collected and prevented from entering, either directly or indirectly, State waters, except for those discharges that have received authorization issued by the DOH-CWB under the NPDES Permit as applicable.

31) Implement appropriate and effective measure(s) to properly contain/collect the potential water pollutant discharges resulting from the application of concrete corrosion inhibitor; or from the scrubbing, chipping, cutting, rebar reinforcing, grouting, filling activities needed for the permitted construction activity (ies).

32) In Hawaii, the Commission on Water Resource Management (CWRM) issues permits regulating withdrawals of surface and groundwater. If water drafting is necessary, the Contractor will ensure this water use is approved in accordance with a stormwater use permit obtained from the CWRM (HRS §174C-48(1987)).

33) Structures designed to minimize sediment and pollutant runoff from sensitive areas such vehicle and fuel storage areas, hazardous materials storage sites, and erosion control structures shall be visually monitored daily, especially following precipitation events to ensure these structures are functioning properly.

34) Maintain temporary erosion control measures in working condition until the project is complete or the measures are no longer needed as outlined in Special Provision Section 209 and the SWPPP/IWPPP.

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35) For dewatering that may be required during excavation or construction of the project, a NPDES General Permit for Construction Activity Dewatering would be required for discharging dewatering effluent into waters of the US. The permit will require appropriate BMPs, an erosion control plan, and a water quality monitoring plan to mitigate any impacts on receiving waters.

36) Develop a Rain Event Action Plan (REAP) prior to Notice to Proceed. The REAP will be reviewed and structured to address project specific actions that are needed to prevent pollutants from reaching the creeks and rivers during the rain event. The REAP will be executed within 48 hours prior to a forecast rain event of 50% chance of precipitation or more. BMPs in the REAP include:

a. When the trees are cleared, the slash will be chipped and placed as mulch on the area that has been cleared to prevent raindrop erosion.

b. Any area that has soil disturbances will be stabilized prior to rain events with mulch, wood chips, or other protective covers.

c. Sediment traps will be placed to collect the water and allow sediment to settle out. If sediment traps are not possible, other settling and filtering devices will be used to slow water down and remove sediments.

d. Operations will shut down during extreme rain events.

e. Fueling and repair areas will be covered and surrounded by a berm.

f. Exposed soil will be covered and stabilized.

g. Treated materials will be covered or placed in a shed.

h. Dumpsters will be covered at all times.

i. Drain holes will be plugged.

j. Control perimeters will be established around stockpiles of material.

37) Submit a Spill Prevention, Control, and Countermeasure (SPCC) Plan with the Water Pollution, Dust, and Erosion Control Submittals.

38) Any spill of petroleum products, hazardous materials, or other chemical or biological products released from stationary sources or construction, fleet, or other support vehicles shall be properly cleaned, mitigated, and remedied, if necessary. Any spill of

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39) In general, when gasoline, diesel fuel, antifreeze, hydraulic fluid or any other chemical contained within the vehicle is released to the pavement or the ground, proper, corrective, clean-up and safety actions specified in the SPCC and SWPPP will be immediately implemented. All vehicles with load rating of two tons or greater will carry, at minimum, enough absorbent materials to effectively immobilize the total volume of fluids contained within the vehicle.

40) Repair leaks immediately on discovery. Equipment that leaks will not be used. Oil pans and absorbent material will be in place prior to beginning repair work. The contractor will be required to provide the “on-scene” capability of catching and absorbing leaks or spillage of petroleum products including antifreeze from breakdowns or repair actions with approved absorbent materials. A supply of acceptable absorbent materials at the job site in the vent of spills, as defined in the SWPPP will be available. Sand and soil are not approved absorbent materials. Soils contaminated with fluids will be removed, placed in appropriate safety containers, and disposed of according to state and/or federal regulations.

41) Collect and dispose of all waste fuels, lubricating fluids, and other chemicals in a manner that ensures that no adverse environmental impact will occur. Construction equipment will be inspected daily to ensure hydraulic, fuel and lubrication systems are in good condition and free of leaks to prevent these materials from entering any stream. Vehicle servicing and refueling areas, fuel storage areas, and construction staging and materials storage areas will be sited a minimum of (50 feet) 15 meters from ordinary high water, typically referred to as the Q2 elevation, wetlands, and contained properly to ensure that spilled fluids or stored materials do not enter any stream or wetland.

42) Attachment A shows the locations of sediment and erosion control features. The Contractor shall add additional BMPs to facilitate different phases of construction or to accommodate Contractor’s means and methods. These BMPs shall be tracked on the projects SWPPP/IWPPP.

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7.2.1A (WQC Section 5) - Emergency Contacts Provide the name and two (2) phone numbers of at least two persons who may be contacted in case of emergency regarding “discharges” into the navigable waters. The Contractor shall include their personnel information once the project is awarded.

1) Name: Ty H. Fukuroku Company: Hawaii Department of Transportation Position: Acting HDOT Maui District Engineer Contact Number: (808) 873-3535 Contact Alternate (Cell) Phone number: (808) xxx-xxxx

2) Name: Contractor Representative Company: Contractor Position: Contractor Contact Number: (808)692-XXXX Contact Alternate (Cell) Phone number: (808)xxx-xxxx

7.2.1 Storm Water Team

The permittee shall assemble and oversee a “storm water team,” which is responsible for the development of the SWPPP/IWPPP, any later modifications to it, and for compliance with the requirements in HAR 11-55.

The SWPPP/IWPPP must identify the personnel (by name or position) that are part of the storm water team, as well as their individual responsibilities. Each member of the storm water team must have ready access to an electronic or paper copy of applicable portions of this permit, the most updated copy of the SWPPP/IWPPP, and other relevant documents or information that must be kept with the SWPPP/IWPPP.

The Contractor shall include their personnel information once the project is awarded.

1) Name: Jillian M. Chen Company: Hawaii Department of Transportation Position: HDOT Design Project Manager Contact Number: (808) 692-7581

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Responsibilities: Develop SWPPP/IWPPP during the design process

2) Name: Todd Nishioka Company: WSP USA Position: Sr. Supervising Engineer Contact Number: (808)566-2212 Responsibilities: Develop SWPPP/IWPPP during the design process

3) Name:

Company: Hawaii Department of Transportation Position: HDOT Resident Engineer Contact Number: (808)xxx-xxxx Responsibilities:

4) Name:

Company: Hawaii Department of Transportation Position: HDOT Construction Project Engineer Contact Number: (808)xxx-xxxx Responsibilities:

5) Name:

Company: Hawaii Department of Transportation Position: HDOT Construction Project Engineer Contact Number: (808)xxx-xxxx Responsibilities:

6) Name:

Company: Contractor Position: Contractor Designated Representative

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Contact Number: (808)xxx-xxxx Responsibilities:

7) Name:

Company: Contractor Position: Contractor Contact Number: (808)xxx-xxxx Responsibilities:

8) Name:

Company: Contractor Position: Contractor Contact Number: (808)xxx-xxxx Responsibilities:

7.2.2A (WQC Section 1) - Army Corps Pre-Construction Notification

Check all NWP or Federal Authorization Applicable for this project:

☒ NWP 3 - Maintenance ☐ NWP 5 – Scientific Measurement Devices ☐ NWP 6 – Survey Activities ☐ NWP 12 – Utility Line Activities ☐ NWP 13 – Bank Stabilization Activities ☐ NWP 14 – Linear Transportation Projects ☐ NWP 23 – Approved Categorical Exclusions ☐ NWP 33 – Temporary Construction Access and Dewatering ☐ Section 10 Rivers and Harbors Act Authorizations ☐ Individual 404 Permit Authorizations ☐ Other _____________________________

See Attachment K for PCN

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Are there any Special Conditions?

□ Yes (See Attachment K for Special Conditions) ☒ No

7.2.2 Nature of Construction Activities NOI Form C.6

What is the function of the construction activity (Please check all applicable activity(ies))?

☐ Residential ☐ Commercial ☐ Industrial Road Construction ☐ Linear Utility ☒ Other (please specify): Bridge Seismic Retrofit

For construction site estimates, see NOI Form C, Section C.3.

What is being constructed? The project consists of removal of debris from the piers, wrapping the piers with carbon fiber to the top of footing (excavation is likely around the footings to expose the piers to the top of the footings), removal of a portion of the backfill from behind the abutments and backfilling with CLSM, replacement of the creep blocks at the bent and pier footing upgrades.

Describe the scope of work and major construction activities covered in this NOI, including baseyards and staging areas. Include only project areas where the locations of impervious structures are known; project areas where the final grades are known; and work areas that will be performed by one (1) general contractor. A separate NOI will be required for all other project areas. (Note: Per Section 209 of the specifications and applicable special provisions, the maximum surface area of earth material which may be exposed at any time is 300,000 square feet.)

This project requires a Notice of Intent as it meets the 1 acre disturbed area threshold. The locations of the staging and storage areas may be changed by the Contractor depending on his construction means and methods. The Contractor shall submit to the Engineer the locations of his staging and storage areas once the project is awarded for review and acceptance.

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7.2.2B (WQC Section 10 and Section 12) – Receiving State Water(s) Information

a. Identify the receiving State water which the project will be conducted in. The receiving State water must be a surface water. This should include only the coordinates of the work subject to the Army Corps 404 Permit/Section 10 Rivers and Harbors Act Authorization. Use Section B below for the coordinates of discharges from areas not associated with the federal permit or license (Staging and Storage Areas, other work such as resurfacing, etc.) or refer to the NPDES Documents if there is a NPDES Permit/NGPC.

Latitude: 20.797781° N Longitude: -156.307969° E

Receiving Water Name: Waiale Gulch

Receiving State Waters Classification: Class 2, Inland

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

Latitude: 20.742171° N Longitude: -156.326161° E

Receiving Water Name: Naalae Gulch

Receiving State Waters Classification: Class 2, Inland

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

Latitude: 20.773275° N Longitude: -156.307928° E

Receiving Water Name: Pulehu Gulch

Receiving State Waters Classification: Class 2, Inland

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

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If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

b. Provide the Outfall coordinates of any outfalls for work outside of the Army Corps 404 Permit/Section 10 Rivers and Harbors Act Authorization. Indicate if the Receiving State Water is on the Section 303(d) list and the impairment pollutants if any.

1) Discharge Point Label: DP #1A

Latitude: 20.797775° N Longitude: -156.307945° E

Receiving Water Name: Waiale Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

2) Discharge Point Label: DP #1B

Latitude: 20.798108° N Longitude: -156.308768° E

Receiving Water Name: Waiale Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

3) Discharge Point Label: DP #2

Latitude: 20.797743° N Longitude:-156.307866 ° E

Receiving Water Name: Waiale Gulch

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If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

4) Discharge Point Label: DP #3

Latitude: 20.797564° N Longitude: -156.307928° E

Receiving Water Name: Waiale Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

The Topographic Map showing the Locations of the Outfalls is included in Attachment A

5) Discharge Point Label: DP #4

Latitude: 20.797665° N Longitude: -156.308058° E

Receiving Water Name: Waiale Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

6) Discharge Point Label: DP #5A

Latitude: 20.742268° N Longitude: -156.326077° E

Receiving Water Name: Naalae Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

7) Discharge Point Label: DP #5B

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Latitude: 20.742466° N Longitude: -156.326232° E

Receiving Water Name: Naalae Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

8) Discharge Point Label: DP #6

Latitude: 20.742211° N Longitude: -156.326012° E

Receiving Water Name: Naalae Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

9) Discharge Point Label: DP #7

Latitude: 20.742159° N Longitude: -156.326062° E

Receiving Water Name: Naalae Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

10) Discharge Point Label: DP #8

Latitude: 20.742196° N Longitude: -156.326176° E

Receiving Water Name: Naalae Gulch

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If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

11) Discharge Point Label: DP #9

Latitude: 20.741731° N Longitude: -156.326702° E

Receiving Water Name: Naalae Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

12) Discharge Point Label: DP #10

Latitude: 20.773350° N Longitude: -156.307927° E

Receiving Water Name: Pulehu Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

13) Discharge Point Label: DP #11

Latitude: 20.773313° N Longitude: -156.307840° E

Receiving Water Name: Pulehu Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

14) Discharge Point Label: DP #12

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Latitude: 20.773267° N Longitude: -156.307840° E

Receiving Water Name: Pulehu Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

15) Discharge Point Label: DP #13

Latitude: 20.773312° N Longitude: -156.307928° E

Receiving Water Name: Pulehu Gulch

Is the receiving State Water on the Section 303(d) List?:

Yes ☒ No

If the Receiving Water is on the Section 303(d) List, provide the impairment pollutants:

The Topographic Map showing the Locations of the Outfalls is included in Attachment A

7.2.2C (WQC Section 12) – Project Scope

Describe the overall project scope and activities.

a. The overall project description should include: the project activities both in and out of the navigable waters, the construction or operation of facilities which may result in any direct and/or indirect “discharges” into State waters.

The project scope of work consists of: (1)removal of debris from the bridge piers, (2)wrapping the piers with carbon fiber to the top of footing (excavation is likely around the footings to expose the piers to the top of the footings. It is likely that installing the carbon fiber wrap may require work in the water, below the Ordinary High Water Mark), (3)removal of a portion of the backfill from behind the abutments and backfilling with Controlled Low Strength Material (CLSM) and tying the abutment to the CLSM backfill, (4)replacement of the creep blocks at the bents and (5)pier footing upgrades.

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7.2.3 Emergency Related Projects

Note: This Section is only applicable to Construction Activities NPDES/NGPC Permits

Not Applicable

☐ Applicable (If this box is checked, provide additional information as described below)

If conducting earth-disturbing activities in response to a public emergency (see section 1.3.), the permittee shall document the cause of the public emergency (e.g., natural disaster, extreme flooding conditions, etc.), information substantiating its occurrence (e.g., state disaster declaration or similar state declaration), and a description of the construction necessary to reestablish effected public services. The declaration of emergency or imminent threat to public health is required to be from the state governor or the director. See Attachment H for additional information.

7.2.4 Identification of Prime Contractor and Other Site Contractors The SWPPP/IWPPP must include a list of both the prime contractor and all other contractors (e.g., sub-contractors) who will be engaged in construction activities at the site, and the areas of the site over which each contractor has control. List prime contractor and sub-contractors below and attach map showing areas of control in Attachment A. Complete and attach a Subcontractor Certification/Agreement in Attachment D.

(General Contractor Company Name) The general contractor information will be submitted at least 30 calendar days before the start of construction activities.

(General Contractor Contact Person Name)

(General Contractor Mailing Address)

(General Contractor Mailing City) (General Contractor Mailing State and Zip Code)(General Contractor Telephone Number)

(General Contractor Email Address)

(Sub-Contractor #1 Company Name, as needed)

(Sub-Contractor Contact Person Name)

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(Sub-Contractor Mailing Address)

(Sub-Contractor Mailing City) (Sub-Contractor Mailing State and Zip Code)

(Sub-Contractor Telephone Number)

(Sub-Contractor Email Address)

(Sub-Contractor #2 Company Name, as needed)

(Sub-Contractor Contact Person Name)

(Sub-Contractor Mailing Address)

(Sub-Contractor Mailing City) (Sub-Contractor Mailing State and Zip Code)

(Sub-Contractor Telephone Number)

(Sub-Contractor Email Address)

(Sub-Contractor #3 Company Name, as needed)

(Sub-Contractor Contact Person Name)

(Sub-Contractor Mailing Address)

(Sub-Contractor Mailing City) (Sub-Contractor Mailing State and Zip Code)

(Sub-Contractor Telephone Number)

(Sub-Contractor Email Address)

Attach maps showing areas of Contractor/Subcontractor Control in Attachment A.

Complete and attach a Subcontractor Certification/Agreement in Attachment D.

7.2.5 Sequence and Estimated Dates of Construction Activities

Separate the schedule for In-Water and Land-Based work. In Attachment C, attach the proposed construction schedule which shall include, at a minimum:

The Contractor shall submit to the Engineer an update of the dates once the project is awarded for inclusion in the SWPPP.

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Land Based (HAR 11-55) Installation of storm water control measures, and when they will be made operational, including an explanation of how the sequence and schedule for installation of storm water control measures complies with section 5.1.1.3.1. and of any departures from manufacturer specifications pursuant to section 5.1.1.3.2., including removal procedures of the storm water control measures after construction has ceased.

Commencement and duration of earth-disturbing activities, including clearing and grubbing, mass grading, site preparation (i.e., excavating, cutting and filling), final grading, and creation of soil and vegetation stockpiles requiring stabilization.

Cessation, temporarily or permanently, of construction activities on the site, or in designated portions of the site.

Final or temporary stabilization of areas of exposed soil. The dates for stabilization must reflect the applicable deadlines to which the permittee is subject to in section 5.2.1.

Removal of temporary storm water conveyances/channels and other storm water control measures, removal of construction equipment and vehicles, and cessation of any pollutant-generating activities.

In-Water (CWA Section 404 and Section 401 WQC and HAR 11-54) Date BMP measures to isolate and contain work areas are installed.

Commencement and duration of In-Water construction activities.

Cessation, temporarily or permanently, of construction activities on the site, or in designated portions of the site.

Removal of temporary storm water conveyances/channels and other storm water control measures, removal of construction equipment and vehicles, and cessation of any pollutant-generating activities.

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7.2.6.1 Property Boundary Maps

Boundaries of the property and of the locations where construction activities will occur. Attach, title, and identify all maps (pdf - minimum 300 dpi) listed below, in Attachment A.

a. Legal boundaries of the project. See SWPPP/IWPPP Attachment A

b. Locations where earth-disturbing activities will occur, noting any sequencing of construction activities. See SWPPP/IWPPP Attachment A

c. Pre-Construction Topography including approximate slopes and drainage patterns for the entire Facility/Project site to the receiving storm water drainage system (if applicable) or to the receiving State water(s) (with flow arrows). Note areas of steep slopes (15% or greater in grade). See SWPPP/IWPPP Attachment A

d. During-Construction Topography (after major grading activities) including approximate slopes and drainage patterns for the entire Facility/Project site to the receiving storm water drainage system (if applicable) or to the receiving State water(s) (with flow arrows) Note areas of steep slopes (15% or greater in grade). See SWPPP/IWPPP Attachment A

e. Post-Construction Topography including approximate slopes and drainage patterns for the entire Facility/Project site to the receiving storm water drainage system (if applicable) or to the receiving State water(s) (with flow arrows). Note areas of steep slopes (15% or greater in grade). See SWPPP/IWPPP Attachment A

f. Locations where sediment, soil, or other construction materials will be stockpiled 7.2.6.1c.

See SWPPP/IWPPP Attachment AThe Contractor shall submit to the Engineer for his review and acceptance the locations of stockpiles once the project is awarded and will be included in the SWPPP/IWPPP. The Contractor shall submit to the Engineer for his review and acceptance stockpile areas during construction for inclusion in the SWPPP/IWPPP.

g. Locations of any contaminated soil or contaminated soil stockpiles 7.2.6.1d. No areas of contaminated soil are expected to be encountered in the area. If any areas are encountered, the locations will be included in the SWPPP/IWPPP.

h. Locations of any crossings of state waters 7.2.6.1e. See SWPPP/IWPPP Attachment A-4.

i. Designated points on the site where vehicles will exit onto paved roads 7.2.6.1f. See SWPPP/IWPPP Attachment A. The Contractor shall submit to the Engineer the locations of stabilized entrances once the project is awarded for his review and acceptance and will be included in the SWPPP/IWPPP. The Contractor shall submit to the Engineer for his review and acceptance any updates/changes to stabilized entrances during construction for inclusion in the SWPPP/IWPPP.

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j. Location(s) of impervious structures (including buildings, roads, parking lots, etc.) after construction is completed 7.2.6.1g. See SWPPP/IWPPP Attachment A.

k. Locations of construction support activity areas covered by this permit 7.2.6.1h. See SWPPP/IWPPP Attachment AThe Contractor shall submit to the Engineer the locations of his staging and storage areas for his review and acceptance once the project is awarded and will be included in the SWPPP/IWPPP. The Contractor shall submit to the Engineer any updates/changes to staging and storage areas during construction for his review and acceptance and inclusion in the SWPPP/IWPPP.

7.2.6.1A (WQC Section 1) - Jurisdictional Waters of the U.S. (Army Corps Jurisdiction) Boundary Maps Boundaries of the property and of the locations where construction activities will occur. Attach, title, and identify all maps (pdf - minimum 300 dpi) listed below, in Attachment A.

Map showing the Jurisdiction Line between In-Water and Land Based BMPs See Attachment A-2 Army Corps Jurisdictional Boundary Map___________________ _

Note: The Army Corps Jurisdiction Boundary distinguishes where In-Water and Land-Based BMPs (and the associated Inspection, Stabilization Schedules, etc.) apply.

Prior to commencement of the authorized work in wetlands, other special aquatic sites and other waters, the Contractor shall clearly identify (demarcate) in the field the geographic limits of such waters (i.e., High Tide Line, Mean High Water Mark, Ordinary High Water Mark, approved wetland boundary) affected by the authorized work and as approved by the Army Corps and demarcated above. The delineation of these geographic bounds shall be accomplished by staking, flagging, painting, silt fencing, signage, buoys, etc. and in all cases shall be maintained and remain observable throughout the construction period. The Contractor shall also demarcate in the field the project limits of the Corps-authorized fill footprint to ensure that dredged or fill material is not discharged beyond the authorized limits. The permittee is prohibited from conducting any activity occurring in or affecting wetlands, other special aquatic sites and other waters that requires prior authorization from the Corps, outside of the permitted limits of disturbance (as shown on the permit drawings).

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7.2.6.2 to 7.2.6.8 State Waters and BMP Maps

Attach, title, and identify all maps (pdf - minimum 300 dpi) listed below, in Attachment A.

Please reference which maps account for the features listed below.

a. Locations of all state waters, including wetlands, that exist within or in the immediate vicinity of the site and indicate which waterbodies are listed as impaired 7.2.6.2. See SWPPP/IWPPP Attachment A.

b. The boundary lines of any natural buffers provided consistent with section 5.1.2.1.1, 7.2.6.3.

Natural buffers are not feasible in the vicinity of Alae Stream. See Section 7.2.9.

c. Topography of the site, existing vegetative cover (e.g., forest, pasture, pavement, structures), and drainage pattern(s) of storm water onto, over, and from the site property before and after major grading activities 7.2.6.4. See SWPPP/IWPPP Attachment A.

d. Storm water discharge locations, including: a) Locations of any storm drain inlets on the site and in the immediate vicinity of the site to receive storm water runoff from the project; See SWPPP/IWPPP Attachment A.

and b) Locations where storm water will be discharged to state waters (including wetlands)

7.2.6.5. See SWPPP/IWPPP Attachment A-4.

e. Locations of all potential pollutant-generating activities identified in section 7.2.7, 7.2.6.6.

See SWPPP/IWPPP Attachment A.

f. Locations of storm water control measures 7.2.6.7. See SWPPP/IWPPP Attachment A. The Contractor shall submit to the Engineer for his review and acceptance the locations of storm water control measures by construction activity and construction sequence once the project is awarded and will be included in the SWPPP/IWPPP. The Contractor shall submit a separate map for each phase of construction which changes the drainage pattern. The Contractor shall submit to the Engineer for his review and acceptance any updates/changes to storm water control measures during construction for inclusion in the SWPPP/IWPPP.

(Include maps by Construction Activity and Construction Sequence).

g. Locations where chemicals will be used and stored 7.2.6.8. For locations where chemicals will be used, see SWPPP/IWPPP Attachment A Construction Activity BMP Map. The table below shows possible chemicals which may be used on site and which construction activity they are associated with. The Contractor shall submit to the Engineer for his review and acceptance

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Chemical Location Major

Construction Activity

Hydraulic oils/ fluids

Vehicle Refueling area Leaks from broken hoses on equipment Vehicles shall be maintained off site. If a maintenance area is necessary on-site, the Contractor shall submit to the Engineer the locations and BMPs for his review and acceptance for inclusion in the

SWPPP/IWPPP.

Bridge Foundation Scour Repair and Construction

Antifreeze/Coolants Vehicle Refueling area Leaks from broken hoses on equipment Vehicles shall be maintained off site. If a maintenance area is necessary on-site, the Contractor shall submit to the Engineer the locations and BMPs for his review and acceptance for inclusion in the

SWPPP/IWPPP.

Bridge Foundation Scour Repairand Construction

Glue, Adhesives Roadway construction Bridge Foundation Scour Repair and Construction

Concrete Curing Compounds/ Form Release Oils

Roadway construction involving concrete Bridge Foundation Scour Repairand Construction

Pesticides Landscaping areas Landscaping

Herbicides Landscaping areas Landscaping

Insecticides Landscaping areas Landscaping

Fertilizers Landscaping areas Landscaping

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7.2.7 Construction Site Pollutants

For each pollutant-generating activity, an inventory of pollutants or pollutant constituents (e.g., sediment, fertilizers and/or pesticides, paints, solvents,…