solid waste disposal site closure permit city of portland

^c^Permit Number: 1203

Expiration Date: July 1, 2026 of 26

DEQState of OregonDepartment ofEnvironmentalQuality

SOLID WASTE DISPOSAL SITE CLOSURE PERMITSpecial Purpose Landfill

Oregon Department of Environmental Quality700 NE Multnomah Street, Suite 600

Portland, OR 97232Telephone: 503-229-5353

Issued in accordance with the provisions of ORS Chapter 459 andsubject to the land use compatibility statement referenced below.

ISSUED TO:

City of Portland Bureau of Environmental Services

FACILITY NAME AND LOCATION:

Columbia Blvd. WWTP Lagoon Solids MonofiH5001 N. Columbia Blvd.Portland, OR 97203

OPERATOR:


OWNER:


ISSUED IN RESPONSE TO:

• A solid waste closure permit renewal application received July 5,2011.• A Land Use Compatibility Statement from City of Portland, dated November 26, 2001.

The determination to issue this permit is based on findings and technical information included in the permit record.

ISSUED BY THE OREGON DEPARTMENT OF ENVIRONMENTAL QUALITY

Audrey O'BrienSolid Waste ManagerNorthwest Region

^t ^

Permitted Activities

Until this permit expires or is modified or revoked, the permittee is authorized to operate, maintain, and close a solidwaste land disposal site in conformance with the requirements, limitations, and conditions set forth in this documentincluding all attachments.

Permit Number: 1203Expiration Date: July 1, 2026

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TABLE OF CONTENTS

Introduction

This document is a solid waste permit issued by the Oregon Department of Environmental Quality in accordancewith Oregon Revised Statutes (ORS) 459 and Oregon Administrative Rules (OAR), Chapter 340.

Section Topic Page

PERMIT ADMINISTRATION 3

1.0 PERMfT ISSUANCE 32.0 DISCLAIMERS 43.0 AUTHORITY 44.0 PERMIT MODIFICATION 4

ALLOWABLE ACTIVITIES 5

5.0 AUTHORiZATIONS 56.0 PROHIBITIONS 6

OPERATIONS AND DESIGN 6

7.0 OPERATIONS PLAN 68.0 RECORDKEEPING AND REPORTING - OPERATIONS 79.0 SPECIFIC OPERATING CONDITIONS 810.0 SITE DEVELOPMENT AND DESiGN 10

SITE CLOSURE 11

11.0 CLOSURE CONSTRUCTION AND MAINTENANCE 11

SITE POST-CLOSURE 12

12.0 POST-CLOSURE OPERATIONS AND MAINTENANCE 1213.0 RECORDKEEPiNG AND REPORTING - POST-CLOSURE 1414.0 FINANCIAL ASSURANCE 14

ENVIRONMENTAL MONITORING 15

15.0 FOCUSED SITE INVESTIGATION 1516.0 ENVIRONMENTAL MONITORING PLAN (EMP) 1617.0 ENVIRONMENTAL SAMPLING REQUIREMENTS 1618.0 ESTABLISHING PERMET-SPECIFIC CONCENTRATION LIMITS 1719.0 ENVIRONMENTAL MONITORING STANDARDS 1820.0 RECORDKEEPING AND REPORTING - ENVIRONMENTAL MONITORING 2021.0 ENVIRONMENTAL MONITORING NETWORK 21

COIWPUANCE SCHEDULE 23

22.0 SUMMARY OF DUE DATES 23

ATTACHMENTS 25

23.0 ATTACHMENT 1: PARAMETER GROUPS 2524.0 ATTACHMENT 2: PSCLs, ALs, and SSLs 26


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PERMIT ADMINISTRATION

1.0 PERMIT ISSUANCE1.1 PermEttee

This permit is issued to the City of Portland Bureau of Environmental Services.

1.2 Permit number

This permit will be referred to as Solid Waste Permit Number 1203.

1.3 Permit term

The permit is issued on the date it is signed.

The permit's expiration date is July 1, 2026.

1.4 Facility type

The facility is permitted as a Special Purpose landfill.

1.5 Facility owner / operator

The owner and operator of this facility is:

City of Portland Bureau of Environmental Services5001 N. Columbia Blvd.Portland, OR 97203

1.6 Basis for permit issuance

This permit is issued based upon the foliowing documents submitted by the permittee:

• Solid waste permit application received July 5, 2011 .• Land use compatibiiity statement dated September 25, 2001.

1.7 Definitions

Unless otherwise specified, all terms are as defined in OAR 340-093-0030.

1.8 Legal control of property

The permittee must at all times maintain legal control of the disposal site property, including maintaining a currentpermit, contract or agreement that allows the operation of the facility if the site is not owned by the permittee.

1.9 Submittals and notification address

All submittals to DEQ, unless otherwise noted, must be sent to:

Oregon Department of Environmental QualityManager, Solid Waste Program700 NE Muitnomah Street, Suite 600Portland, OR 97232

Or emailed to: [email protected]

Please submit a minimum of one paper copy and one electronic copy in a format that is approved by the DEQproject manager. Note that some submittals may require more paper copies. Therefore, the permittee must confirmwith the project manager how many copies prior to submittal of a document.

Note: Whenever possible, the permittee must submit two-sided paper copies of ail reports. DEQ may acceptelectronic submittals for portions of some reports, as approved in the Environmental Monitoring Plan or by DEQ.


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2.0 DISCLAIMERS

2.1 Property rights

The issuance of this permit does not convey any property rights in either real or personal property, or any exclusiveprivileges, nor does it authorize any injury to private property or any invasion of personal rights.

2.2 DEQ liability

DEQ, its officers, agents, or employees do not sustain any liability on account of the issuance of this permit or onaccount of the construction, maintenance, or operation of facilities pursuant to this permit.

3.0 AUTHORITY3.1 Ten-year permit

This permit is issued for up to 10 years as authorized by Oregon Revised Statutes 459.245(2).

3.2 Documents superseded

This document is the primary solid waste permit for the facility, superseding ail other solid waste permits issued forthe Columbia Blvd. WWTP Lagoon Solids Monofil! by DEQ.

3,3 Permittee responsibility and liability

Conditions of this permit are binding upon the permittee. The permittee must conduct all facility activities incompliance with the provisions of this permit. The permittee is liable for all acts and omissions of the permittee'scontractors and agents in carrying out the operations and other responsibiiities pursuant to this permit.

3.4 Other compliance

This permit's issuance does not relieve the permittee from the responsibility to comply with all other applicablefederal, state, or local laws or regulations, including the following requirements, and any future updates or additionsto these requirements:

• Solid waste renewal permit appiication received July 5, 201 1;

• Oregon Revised Statutes, Chapters 459 and 459A;

• Oregon Administrative Rules Chapter 340;and

• Any documents submitted by the permittee and approved by DEQ.

3.5 Penalties

Vioiation of permit conditions will subject the permittee to civii penalties of up to $25,000 for each day of eachviolation.

Reference: ORS 459.995(1 )(a)

3.6 DEQ access to disposal site

The permittee must allow representatives of DEQ access to the disposal faciiity at aii reasonable times for thepurpose of making inspections, surveys, collecting samples, obtaining data and carrying out other necessaryfunctions related to this permit.

Reference: OAR 340-093-0050(6)

4.0 PERMIT MODIFICATION4.1 Permit review

During the permit's term, DEQ may review and amend the permit if necessary. DEQ will consider the followingfactors in making this determination:

• Compliance history of the facility;

• Changes in volume, waste composition, or operations at the facility;


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• Changes in state or federal rules which should be incorporated into the permit;

• A significant release of leachate or landfill gas from the facility to the environment;

• A significant change to DEQ-approved site closure plan, post-ciosure plan, and/or environmentalmonitoring plan; or

• Other significant information or events.

4.2 Permit modification

DEQ or the permittee may, at any time during the permit's term, propose to change the permit.

Once approved by DEQ any permit-required plans become part of the permit by reference. DEQ may provide publicnotice and opportunity for public review of permit-required plans.

4.3 Modification and revocation by DEQ

The director may, at any time before the expiration date, modify, suspend, or revoke this permit in whole or in part,in accordance with Oregon Revised Statutes 459.255, for reasons including but not limited to the following:

• Violation of any terms or conditions of this permit or any applicabie statute, rule, standard, or order of theEnvironmentai Quality Commission;

• Obtaining this permit by misrepresentation or failure to disclose fully ail relevant facts; or

• A significant change in the post-closure maintenance and monitoring of the disposal site.

4.4 Modification by permittee

The permittee must apply for a modification to this permit if there is a significant change in facility operations or adeviation from permitted activities.

4.5 Public participation

DEQ will issue a public notice to inform the public of any significant changes to the permit.

4.6 Changes in ownership or address

The permittee must report to DEQ any change in the facility's ownership or the permittee's, or operator's name andaddress within 10 days of the change.

ALLOWABLE ACTIVITIES

5.0 AUTHORIZATIONS5.1 Wastes authorized for receipt

This permit only authorizes the facility to accept:

• Lagoon solids removed from the City of Portiand's Columbia Boulevard WWTP Lagoon.

5.2 Post-closure care

This permit authorizes the permittee to provide post-closure maintenance and monitoring at the facility.

5.3 Authorization of activities

The permittee must conduct all facility activities according to the provisions of this permit. Aii plans required by thispermit become part of the permit by reference once approved by DEQ. Any conditions of the approval are aisoincorporated into this permit unless contested by the permittee within 30 days of receipt of a conditional approval.


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6.0 PROHIBITIONS6.1 Hazardous waste disposal

The permittee must not accept hazardous wastes including hazardous wastes from conditionally-exempt smallquantity generators. In the event discovered wastes are hazardous or suspected to be hazardous, the permitteemust, within 24hours, notify DEQ and initiate procedures to identify and remove the waste. Hazardous wastes mustbe removed within 90 days, unless DEQ approves otherwise. The permittee's temporary storage and transportationpractices must comply with DEQ rules.

Reference: Hazardous wastes are defined in ORS 466.005 and OAR 340 Division 101

6.2 Other solid waste disposal

The permittee must not accept any solid waste other than lagoon solids removed from the Columbia Blvd. WWTPLagoon.

6.3 Liquid waste disposal

The permittee must not accept liquid waste for disposal.

Definition: liquid wastes are wastes that do not pass the paint filter test performed in accordance with EPA Method9095B.

6.4 Open burning

The permittee must not conduct any open burning at the site.

OPERATIONS AND DESIGN

7.0 OPERATIONS PLAN7.1 Operations plan

The permittee must operate and maintain the faciiity in accordance with the most current approved operations pianand keep a copy of the DEQ-approved operations plan in the facility file readily available for DEQ inspection andreview.

The permittee must update the Operations Plan, including the operations and maintenance provisions, asnecessary to reflect current facility conditions and procedures and must submit any plan updates to the DEQ forreview and approval prior to their implementation.

Reference: OAR 340-94-040 describes requirements for preparation of an Operations Plan.

7.2 Plan content

The Operations Plan must describe the operation of the disposal site in accordance with all regulatory and permitrequirements, including the following:

Content area

General operations

Describe plans for:

• handling and removal of unauthorized wastes discovered at thefacility

• management of odors generated by facility operations

• management of landfill gas

• management of iandfill leachate

• surface water and erosion controi structure design

• non-compiiance response

Permit Number 1203Expiration Date: July 1, 2026

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Disposal operations

Inspection andmaintenance

Facility records (file)

Contingency

• placement of intermediate cover

• detecting and preventing the disposal of regulated hazardouswastes, poiychlorinated bipheny! wastes, and any otherunacceptable wastes as determined by the DEQ

• fill progression and phasing

• washing equipment

• maintaining leachate and containment systems

• maintaining surface water control structures

• facility records location and management

• providing fire protection equipment

• notification of emergencies and fires to the DEQ

Reference: OAR 340-94-040 describes requirements for preparation of an Operations Plan.

7.3 Operations and maintenance manual

7.4 Within 60 days of approval of a revised Operations Plan, the permittee must prepare an updatedOperations and IVIaintenance Manual, which describes specific procedures for conducting routineand emergency operations at the site. The preventative inspection and maintenance programshould address the following equipment and facilities: personnel safety equipment, operatingequipment, support facilities, environmental control systems, environmental monitoring systems,and the transportation system. The permittee must keep a copy of the Operations and MaintenanceManual in the Operating Record location and be available for DEQ review. Plan and manualmaintenance

The permittee must revise both the Operations Plan and the Operations and Maintenance Manual as necessary tokeep them current and reflective of current facility conditions and procedures.

The permittee must submit Operations Plan revisions to the DEQ for approval.

7.5 Plan and manual compliance

The permittee must conduct all operations at the facility in accordance with the approved Operations Plan, includingany amendments, and the Operations and Maintenance iVfanual.

8.0 RECORDKEEPING AND REPORTING - OPERATIONS8.1 Non-compliance reporting

The permittee must take immediate corrective action for any violations of permit conditions or DEQ rules and notifyDEQ at:

(503) 229-5353 or by email to: [email protected].

DEQ response: DEQ may investigate the nature and extent of the compliance problem and evaluate the adequacyof the permittee's corrective action plans.

8.2 Permit Display

The permittee must display this permit, or a photocopy thereof, where it can be readily referred to by operatingpersonnel.

8.3 Access to records

DEQ must have easy access to all records and reports related to the permitted facility.


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8.4 Fees

The permittee must pay the solid waste fee each year this permit is in effect. An invoice indicating the amount ofthe fee will be mailed prior to the date due.

8.5 Procedure

The permittee must keep records and submit reports according to the following:

Step

1

2

3

4

5

6

Action

Establish a location for the facility records at the facility or anotherlocation mutually agreed with DEQ.

During facility operations, record the amount of each waste type received.Record zero (0) if the waste is not received.

If applicable, every quarter, record the amount of each material recoveredfor recycling or other beneficial purpose.

Submit the information collected in Step 2 above on the Solid WasteDisposal Report/Fee Calculation form provided by DEQ.

Pay solid waste fees as required by OAR 340-097.

Date due: the January 31 of each year.

Retain copies of ail records and reports for five years from the datecreated.

Update all records such that they reflect current conditions at the facility.

8.6 Submittai address

All submittais to DEQ under Sections 8.4 and 8.5 must be sent to:

Oregon Department of Environmental QualityMaterials Management Program811 SW Sixth AvenuePortland, OR 97204

After November 2016, all submittais to DEQ under Section 8.4 and 8.5 must be sent to:

Oregon Department of Environmenta! QualityMateriais Management Program700 NE Multnomah St, Suite 600Portland, OR 97232

9.0 SPECIFIC OPERATING CONDITIONS9.1 Discovery of prohibited wastes

Any solid wastes discovered at the facility must be isolated or removed immediately. Non-hazardous prohibitedwaste must, within 48 hours, be transported to a disposal site authorized to accept such waste, unless ofhen/viseapproved by DEQ.

In the event that discovered wastes are hazardous or suspected to be hazardous, the permittee must, within sevendays, notify DEQ and initiate procedures to identify and remove the waste. Hazardous wastes must be removedwithin 90 days, unless otherwise approved by DEQ. Temporary storage and transportation must be carried out inaccordance with DEQ rules.


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9.2 Spills notification

Oregon Revised Statue 466.635 and Oil and Hazardous Material Emergency Response Requirements, Chapter340, Division 142 require immediate notification to Oregon Emergency Response System (OERS) after taking anyrequired emergency actions to protect human health and the environment when oii or hazardous materials arespilled. The spill must be immediately reported to OERS at 1-800-452-0311 if the spill is of a reportable quantity.Reportabie quantities include:

• Any amount of oil spilled to waters of the state;

• Oil spills on land in excess of 42 gallons;

• Two hundred pounds (25 gallons) or more of spilled pesticide residue; and/or

• Spills of hazardous materials that are equal to, or greater than, the quantity listed in the Code of FederalReguiations, 40 CFR Part 302 (List of Hazardous Substances and Reportable Quantities), andamendments adopted before July 1, 2002.

For a complete list of hazardous materials required to be reported, please refer to OAR 340-142-0050.

9.3 Temporary cover

A temporary geomembrane cover must be installed and maintained as specified in DEQ-approved design andoperations plans. The temporary cover must be constructed over fiil areas which will not receive additional wastefor a period of time greater than 120 days.

9.4 Surface-water structures

Ali stormwater drainage structures must be maintained in good functionai condition. Any significant damage ormaifunctions must be reported to DEQ and repairs made as soon as possible.

9.5 Stormwater pollution control plan

As required by the National PoSlutant Discharge Elimination System (NPDES) 1200-COLS Stormwater Dischargepermit issued to the permittee by DEQ, the permittee must maintain and implement an updated StormwaterPollution Control Plan (SWPCP), which at all times reflects actual site conditions. A current copy of the SWPCPmust be maintained in the faciiity Operating Record.

9.6 Leachate management systems

The permittee must operate and maintain the disposal site in a manner that deters leachate production to themaximum extent practicable. The permittee must construct, operate and maintain in good functional condition al!ieachate containment, collection, detection, removal, storage and treatment systems approved by DEQ. Leachatemust be continuously removed from aii landfill leachate collection systems, such that hydraulic head on the bottomliner is minimized and does not exceed one foot.

9.7 Access control

The permittee must control public access to the iandfill as necessary to prevent unauthorized entry and dumping.

9.8 Air emissions and odors

Air emissions (dust, malodors, air toxics, etc.) from construction, operation and all other activities at the disposalsite must be controlled in compliance with Oregon air quality rules. Odors must be controlled so as to prevent offsite odor nuisances.

9.9 On-site roads

Roads from the landfill property line to the active disposal area and environmental monitoring locations must beconstructed and maintained to minimize traffic hazards, dust and mud, and to provide reasonable all-weathervehicle access to active disposal units.


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9.10 Landfill gas management

Landfiil gas must be controlled in accordance with the requirements of 40 CFR Parts 51, 52 and 60. if landfill gas isgenerated, and collection, containment, removal and treatment systems are required, these systems must bemaintained in good functional condition.

The permittee must notify DEQ about any damaged, defective, orworn-out gas-system equipment, replace orrepair such equipment immediately, and provide a written description of any such work in the annual post-closuremaintenance and monitoring report.

9.11 Fire prevention

The permittee must make arrangements with the local fire control agency to immediateiy acquire their serviceswhen needed and must provide adequate on-site fire protection as determined by the local fire control agency.

Fires must be immediately and thoroughly extinguished. The permittee must be responsible for initiating andcontinuing appropriate fire-fighting methods until all smoldering, smoking and burning ceases.

Fires must be reported to DEQ within 24 hours at:

503-229-5353

10.0 SITE DEVELOPMENT AND DESIGN10.1 Design plans

The permittee must submit engineering design pians for new disposal units, closure of existing units, or otherancillary facilities for DEQ review and approval at least six months prior to the anticipated construction date. Thedesign plans must be prepared and stamped by a qualified professional engineer with current Oregon registration.

The engineering design plans must:

• Specify applicable performance criteria, construction material properties and characteristics, dimensions,and slopes; and

• Provide ail relevant engineering analyses and calculations as a basis for the design.

10.2 Construction requirements

The permittee must perform ail construction in accordance with approved plans and specifications, including ailconditions of approvai, and any amendments to those plans and specifications approved in writing by DEQ.

10.3 Construction documents

Prior to construction of the final landfill cover, a new landfill unit disposal unit, or other waste containment unit at thesite, the permittee must submit and receive written DEQ approval of complete construction documents for theproject to be constructed. The construction documents submitted must:

• Define the construction project team;

• Include construction contract documents specifying material and workmanship requirements to guide howthe Constructor is to furnish products and execute work; and

• include a Construction Quality Assurance (CQA) plan, describing the measures taken to monitor that thequaiity of materials and the work performed by the Constructor complies with project specifications andcontract requirements.

Reference: Foilowing the current Solid Waste Guidance will expedite DEQ review of the construction documents.

10.4 Construction inspection

During construction of a new landfill disposal unit or final cover system, the permittee must provide DEQ with asummary and schedule of planned construction activities in order to facilitate DEQ inspection during day periods ofconstruction.


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10.5 Construction certification report submittal

Within 90 days of completing construction of a landfill disposai unit, a final cover system over an existing or newunit, or a major appurtenant facility, the permittee must submit to DEQ a Construction Certification Report preparedby a qualified independent party, to document and certify that aft required components and structures have beenconstructed in compliance with the permit requirements and approved design specifications.

10.6 Construction certification report content

The construction report must include:

• An executive summary of the construction project and any major problems encountered;

• A list of the governing construction documents;

• A summary of all construction and CQA activities;

• Manufacturers certifications for conformance of all geosynthetic materials with project specifications;

• Test data documenting soil materials conformance with project specifications;

• A summary of all CQA observations, including daily inspection records and test data sheets documentingmaterials deployment and instaiiation in conformance with project specifications;

• Problem identification and corrective measures implemented;

• Designer acceptance reports for errors and inconsistencies;

• A list of deviations from design and material specifications, including documentation justifying thedeviations, copies of change orders and recorded fieid adjustments, and copies of written DEQ approvalsfor deviations and change orders;

• Signed certificates for sub-grade acceptance prior to placement of soii finer and for acceptance of soil linerprior to deployment of geomembrane liner; and

• Photographs and as-constructed drawings, induding record surveys of sub-grade, soil finer, granulardrainage layer and protective soii layer, and a certification statements) and signatures iegally representingthe CQA consultant, designer and facility owner, one of which is that of a professional engineer with currentOregon registration.

Reference: OAR 340-93-150 and DEQ's current Solid Waste Guidance

10.7 Approval to use

The permittee must not dispose of solid waste in newiy constructed disposal units until DEQ has accepted theConstruction Certification. If DEQ does not respond to the Construction Certification Report within 30 days of itsreceipt, the permittee may place waste in the unit.

SITE CLOSURE

11.0 CLOSURE CONSTRUCTION AND MAINTENANCE11.1 Final Engineered Closure plan

At ieast 6 months prior to final closure of any portion of the landfill, the permittee must submit for approval anengineered closure plan and post-closure plan including detailed engineering plans, specifications, and a schedulefor closure.

Reference: The Solid Waste Landfill Guidance, September 1996, provides information on applicable elements of aClosure Plan. Following the organizational format provided in the guidance wili expedite DEQ review of the plan.Also refer to OAR 340-095-0050 and 340-095-0060.

11.2 Closure schedule

The permittee must close each area of the landfill on the schedule approved by DEQ.


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11.3 Final cover

Unless otherwise approved by DEQ, the final landfiii cover must be graded to a slope of at teast 0.5% and consistof (from top to bottom):

• At !east 12 inches of topsoil capable of sustaining dense native vegetation or other vegetation approved byDEQ;

• A drainage layer; and

• A 60-mi! high density or low density polyethylene geomembrane.

11.4 Vegetation

The permittee must establish and maintain a dense, healthy growth of vegetation approved by DEQ over the closedareas of the iandfiH consistent with the proposed finai use.

11,5 Surface contour maintenance

The permittee must maintain the final surface contours of the landfill cover to prevent erosion to the maximumextent practicable. Erosion damage (cuts) must be repaired and seeded so that ail waste remains covered.

The permittee must refill with soil, grade, and seed all areas that have settled and all areas where the cover soil hasbeen damaged by cracking or erosion. Areas where vegetation has not been fully established must be fertilized,re-seeded, and maintained.

11.6 Deed record

Within 30 days after fina! closure of the disposal site, the permittee must record the presence of the waste in theproperty deed record on file with the county.

Reference: OAR 340-094-0130(1 )(a).

SITE POST-CLOSURE

12.0 POST-CLOSURE OPERATIONS AND MAINTENANCE12.1 Post-closure plan

A Post-Closure Plan was approved by DEQ on December 16, 2015. The permittee must amend the Post-ClosurePlan whenever significant changes are proposed to the landfill's closure design and construction, post-closure care,re-deveiopment, end use, or any other facility conditions and procedures. Amendments to the plan must besubmitted to DEQ for review and approval prior to implementing site modifications. The current plan, and anysubsequent changes approved by DEQ, is incorporated in this permit by reference.

References: OAR 340-094-0110 and 0115 describe requirements for updating post-closure pians.

Solid Waste Landfill Guidance, September 1996, provides information on applicable elements of a Post-ClosurePlan.

12.2 Post-closure maintenance

The permittee must maintain the disposal site in accordance with the DEQ-approved Post-Closure Plan and anyamendments to the plan approved in writing by DEQ.

12.3 Inspection

The permittee must physically inspect the entire disposai site at least monthly to determine compiiance with thispermit and DEQ rules. The permittee must record any post-closure repairs performed. Inspection records must bemade available to DEQ upon request

12.4 Cover system

The permittee must monitor and maintain the cover system including cover thickness. The permittee must repairthe cover with approved soil in all areas damaged by erosion, settlement, or cracking; and fertilize, re-seed and


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maintain sparsely vegetated areas. Erosion damage must be repaired and seeded so that afl waste remainscovered. Any construction or redevelopment proposals involving the landfiil must inciude an evaluation of potentiaiimpacts to the cover system and a plan to restore the cover in the event that construction activities disturb the coverand must be reviewed and approved by DEQ prior to construction or redevelopment.

12.5 Vegetation

The permittee must establish and maintain a dense, heaithy growth of vegetation on the landfill cover except forareas occupied by structures or pavement associated with the site. The updated post-ciosure plan must identify thetype of vegetation proposed for this use. Areas where vegetation has not been fully established must be improvedso that vegetation is established and maintained in a heaithy condition to protect the cover and minimize thepotential for soil erosion or ieachate creation.

12.6 Surface contour maintenance

The permittee must maintain the fina! surface contours of the landfill cover in accordance with the following criteria:

• Maintain surface contours at slopes of at least 0.5% to promote drainage and side slope contours at nomore than 30 percent to minimize soil erosion and the potential for slope faiiures;

• Prevent soil erosion and ponding of water to the maximum extent practicable;

• Repair, refiil with soil, re-grade, and seed ail areas that have settled or where water ponds, and all areaswhere the cover soil has been damaged by cracking or erosion. Areas where vegetation has not been fullyestablished must be fertilized, re-seeded, and maintained; and

• Prepare an up-to-date topographic map of the site that depicts existing contours. This topographic mapmust be included in the updated post-closure plan.

Surface contours for redevelopment plans that do not meet the above requirements are subject to DEQ approval.

12.7 Environmental controls

The permittee must ensure that the release of any substance from the landfill into groundwater, surface water, orany other media, will not result in a violation of any applicable federal or state air or water limits, drinking waterrules, or other regulations, beyond the solid waste boundary of the disposal site or an alternative boundaryspecified by DEQ. Any construction or redevelopment proposals involving the landfill must include an evaluation ofpotential impacts to the environmental controls and monitoring system and a plan to prevent impacts to surfacewater, groundwater, or any other media and must be reviewed and approved by DEQ prior to construction orredevelopment.

12.8 Surface water control

The permittee must, at all times, divert surface water drainage around or away from the landfill and maintainsurface water diversion ditches or structures in good working condition and free of obstructions and debris.

12.9 Leachate prevention

The permittee must maintain the fandfiil in a manner that deters leachate production to the maximum extentpracticable.

If site inspections or surface" or groundwater monitoring indicates leachate seeps are discharging ieachate that hasthe potential to reach waters of the state, or wili discharge off of the landfiil property, or will present a potential riskto human health, the permittee must take action to prevent the leachate release in accordance with the approvedOperations Plan and contact DEQ to report the observed conditions and discuss next steps.

Any construction or redevelopment proposals involving the landfill must include an evaluation of potential impactsfrom ieachate to surface water control system or groundwater control and monitoring systems and a plan to preventsurface or groundwater impacts and must be reviewed and approved by DEQ prior to construction orredevelopment.

12.10 Landfill gas control

The permittee must maintain landfill gas vents in good working order. The permittee must control methaneemissions so that methane concentrations do not exceed limits set forth in Section 19.5 of this permit. If


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redevelopment of the landfill site occurs in the future and any structures are placed onsite, the DEQ may requireadditional landfill gas control and monitoring measures to protect public health and safety.

12.11 Access control

The permittee must control public access to the facility as necessary to prevent unauthorized entry and/or dumping.

12.12 Fire protection

The permittee must make arrangements with the local fire control agency to immediately acquire their serviceswhen needed and provide adequate on-site fire control protection, as determined through the local fire controlagency.

Fires must be immediately and thoroughly extinguished and promptly reported to DEQ.

12.13 Complaint log

The permittee must maintain a log recording all complaints received in writing (including email), via telephone, or inperson by the facility operator or staff that specifically refer to dust, odor or other nuisance conditions caused bythis closed landfill. The log must also record the permittee's actions to investigate, make a determination as to thevalidity of the complaint, and resolve the nuisance problem, if possible, within two working days, but no longer than10 working days after receiving the complaint. The permittee must keep complaint records for three years.

12.14 Future use

The permittee must obtain DEQ's prior written approval before any future use or activity, or any construction ofbuiidings, structures, or utilities on the disposal site. Any such modifications to the disposal site must be done in amanner that protects the integrity of the final cover system, landfill stability, gas and groundwater monitoringdevices, and surface water controi systems.

13.0 RECORDKEEPING AND REPORTING - POST-CLOSURE13.1 Non-compliance reporting

The permittee must take immediate corrective action for any violations of permit conditions or DEQ rules and notifyDEQ at:

(503) 229-5353

DEQ response: DEQ may investigate the nature and extent of the compliance problem and evaluate the adequacyof the permittee's corrective action pians.

13.2 Evaluation

Prior to September 15 of each year following completion of the final closure, the permittee must evaluate thefacility's status and submit to DEQ the following information:

• A discussion of the activities undertaken to implement the post-closure plan; and

• A description of unanticipated occurrences and any changes to the post-closure plan.

13.3 Permit Use

The permittee must refer to the permit on a regular basis to maintain familiarity with its content.

14.0 FINANCIAL ASSURANCE

• Financial assurance required.

The permittee must comply with applicable financial assurance criteria requirements prescribed by OAR 340-094-0140. The permittee must maintain an up-to-date Financial Assurance Plan in the facility Operating Record, andprovide financial assurance for landfill closure, post-closure care and, if required, corrective action. The financialassurance provided must:

• Be in the amount required by OAR 340-094-0140(5);

Permit Number: 1203Expiration Date: Juiy 1, 2026

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• Be updated, annually, in accordance with OAR 340-094-0140(6)(e); and

• Consist of a financial assurance mechanism complying with OAR 340-094-0145.

14.1 Financial assurance plan

The permittee must maintain the approved financial assurance pian and provide financial assurance for the costs ofsite closure, post-dosure care, and corrective action (if applicable). Plan revisions must also be submitted to DEQfor written approval. The permittee must keep the current financial assurance plan in the facility file.

Reference: The plan must be prepared in accordance with OAR 340-095-0090. Acceptable mechanisms aredescribed in OAR 340-095-0095.

14.2 Cost estimate

The cost estimate for post-dosure care must be calculated based on an estimated 10 years of remaining post-closure care. The cost-estimate must be updated annually and can be reduced by one year each year (that is, nineyears next year), until the end of the post-closure period, or until notified in writing by DEQ of a change in thisrequirement.

Reference: The cost estimate must be prepared in accordance with DEQ guidance and OAR 340-094-0140.

14.3 Recertification of financial assurance

Prior to September 15th of each year, the permittee review and update their financial assurance in accordance withOAR 340-094-0140(6)(e)and submit to DEQ one (1) notarized copy of the Annual Financial AssuranceRecertification Report which documents that this review and update work have been completed.

Note: The permittee must annually review and update financial assurance in accordance with OAR 340-094-0140(6)(e).

14.4 Use of financial assurance

The permittee must not use the financial assurance for any purpose other than to finance the permitted facility'sapproved post-ciosure activities and corrective action activities, if any, for the landfill, or to guarantee that thoseactivities wil! be completed.

14.5 Continuity of financial assurance

The permittee must continuously maintain financial assurance for the landfill until DEQ no longer requires that thepermittee or other person owning or controlling the site demonstrate financial responsibility for post-closure care orcorrective action (if required).

ENVIRONMENTAL MONITORING

15.0 FOCUSED SITE INVESTIGATION

15.1 Site investigation workplan

Within 60 days of issuance of this permit, the permittee must submit to DEQ for review and approval a detailedworkpian that describes the elements of a focused site investigation. The workpian must include a detaileddescription of the planned investigation to accomplish the objectives fisted below and a detailed project scheduleincluding site investigation report submittal. The workplan must be prepared and stamped by a RegisteredGeologist or a Certified Engineering Geologist, with current Oregon registration.

The workplan shouid address the following:

• Conduct limited landfill gas monitoring of the site gas venting system.

• Asses if iagoon solids are generating landfill gasses in the monofiii.

• Proposed methane methane test equipment and methodology.

• Proposed quality assurance / quality control measures.


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15.2 Site investigation report

By the deadline established in the Site Investigation Workplan (workplan) described in Section 15.1 of this permit,the permittee must submit to DEQ for review and approval a detailed report that documents the results of a focusedsite investigation of the Columbia Blvd. WWTP Lagoon Solids Monofill consistent with the workplan. The siteinvestigation report must be prepared and stamped by a Registered Geofogist or a Certified Engineering Geologistwith current Oregon registration.

DEQ will use the results of the focused site investigation to determine if additional actions are required at theColumbia Blvd. WWTP Lagoon Soiids Monofill to address any identified environmental concerns.

16.0 ENVIRONMENTAL MONITORING PLAN (EMP)16.1 EMP contents

An Environmental Monitoring Plan (EMP) was approved by DEQ on February 23, 2016. The current plan, and anysubsequent changes approved by DEQ, is incorporated in this permit by reference.

Any updates to the plan may consist of the previous approved EMP with any changes or additions since that time(i.e., approved permit-specific concentration limits, revised parameter lists, revised schedules, new wells, etc.)

16.2 EMP maintenance

The permittee must revise the EMP as necessary so it reflects current facility conditions, procedures, and samplingrequirements or changes. The permittee must submit ail EMP revisions to DEQ for approvai.

16.3 Long-term monitoring plan

After DEQ approves any concentration limits (see Section 18 of this permit), the permittee must update the EMP toreflect the long-term monitoring program and submit the updated plan for DEQ review and approval.

Note: See also the requirements for establishing PSCLs, ALs, or SSLs in this permit; the procedure for establishingCLVs can be found in OAR 340-40-030(4).

16.4 Additional monitoring points

The permittee must incorporate any new or replacement monitoring point or device into the EIVIP and submit theupdated EMP to DEQ for review and approval.

16.5 EMP compliance

The permittee must conduct all environmental monitoring at the facihty in accordance with the approved EMP,including any conditions of EMP approvai, EMP amendments, and updates.

17.0 ENVIRONft/IENTAL SAMPLING REQUIREMENTS17.1 Notification

The permittee must notify DEQ in writing of all upcoming sampling events at ieast 10 working days prior to thescheduled date of the sampling event at the following address or via emaii to the program manager and currentproject manager:

Oregon Department of Environmental QualityManager, Environmental Partnerships Section700 NE Multnomah Street, Suite 600Portland, OR 97232(503) 229-5353

or by email to; DEQNWR.SolidWastePermitCoordJnatorOidea.state.or.us.

17.2 Split sampling

The permittee must split samples with DEQ when DEQ requests, and must schedule aft requested split-samplingevents with DEQ laboratory at least 45 days prior to the sampling event.


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• Split sampling events with DEQ tentatively should be scheduled during the foilowing groundwatermonitoring events Spring 2017

• Spring 2021« Fall 2025

Oregon Department of Environmentai QualityLaboratory, Groundwater Monitoring Section3150 NW 229th, Suite 150Hillsboro, OR 97124Phone: (503) 693-5700Fax: (503) 693-4999

17.3 Monitoring schedule

The permittee must refer to the approved Environmental Monitoring Plan for environmental monitoring procedures.

Quarters are defined as the following:

If sampling in the...

Winter

Spring

Summer

Fall

Schedule the s

On, or after....

January 1

April 1

July 1

October 1

arnpling event

But on, or before...

February 28

May 31

August 31

November 30

17.4 Monitoring after EMP approval

The permittee must monitor the facility in accordance with: 1 ) the approved EMP; 2) any conditions of the DEQ'sapproval; and 3) any DEQ-approved amendments and updates.

17.5 Changes in sampling or split sampling

During the permit's term, DEQ may add to or delete from the list of scheduled sampling events, sample locations,and sampling parameters, and may conduct unscheduled sampling or spht-sampling events. In the event ofchanges to the split-sampling schedule, DEQ will make every effort to notify the permittee at least 30 days beforesuch changes

18.0 ESTABLISHING PERMIT-SPECIFIC CONCENTRATION LIMITS18.1 Gathering data

Monitoring of the background wells in accordance with the approved Environmental Monitoring Plan must beconducted until all necessary data sets have been collected, and PSCLs, ALs, and/or SSLs are proposed for eachindividual parameter of concern. To set PSCLs or SSLs then the permittee must demonstrate to DEQ's satisfactionthat the data is valid and that no impacts from the facility have influenced the data set to be used.

18.2 Future units

For future units, the permittee must collect a sufficient number of samples to deter-mine background groundwaterquality prior to the piacement of waste in the new cells.

18.3 Statistical analysis

The permittee must perform statistical evaluations of monitoring results for each sampling event in accordance with40 CFR 258.53 or other methods approved of in advance by DEQ in order to establish compiiance concentrationlimits (PSCLs, ALs, and SSLs),

Permit Number: 1203Expiration Date: Juiy 1, 2026

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References: DEQ has prepared an Internal Management Directive for Statistical Analysis, which can be found atthe following website:http://www.deq.state.or.us/lq/pubs/docs/sw/DevelopinciConcentrationLimitsPermjttedSWFacilities.pdf.

Statistical Analysis of Groundwater Monitoring Data at RCRA facilities, Addendum to Interim Fma! Guidance,USEPA, June 1992

18.4 Proposing PSCLs, ALs, and/or SSLs

The permittee must propose for DEQ's review and approval, a PSCL, AL, or SSL pursuant to the guidelinesspecified in OAR 340-040. The proposal must address all required parameters. Once a statisticaily valid data set(at least nine (9) acceptable data points) are established from the appropriate background well(s), the permitteemay generate a PSCL, AL, or SSL for each designated, long-term monitoring parameter.

18.5 Changing PSCLs, ALs, and/or SSLs

If the permittee demonstrates to the DEQ's satisfaction that background groundwater quality has significantlychanged since a PSCL, AL, or SSL was established, and if the change is unrelated to the permitted facility'sinfiuence, the permittee can propose to the DEQ a revised level for the affected PSCL(s), AL(s), or SSL(s).

Note: This does not apply to intrawell comparisons, only to interwell methods.

18.6 Establishing and changing CLVs

The permittee should refer to the DEQ's Groundwater Quality Protection Rules [OAR 340-040-0030(4)] forguidance in establishing and changing Concentration Limit Variances (CLVs).

19.0 ENVIRONMENTAL MONITORING STANDARDS19.1 Applicable regulatory standard

The permittee must ensure that the release of any substance from the iandfili into groundwater, surface water, orany other media will not result in a violation of any applicable federal or state air or water limits, drinking waterrules, or other regulations beyond the solid waste boundary of the disposal site or an alternative boundary specifiedby DEQ.

Reference: OAR 340-094-0040 and 340-094-0080.

19.2 Compliance points

Compliance wells and any alternative compliance points are defined in the latest DEQ-approved EMP.

19.3 Review of results

The permittee must review the analytical results after each monitoring event according to the following table.


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If analytical results are:

Above any one PSCL, CLV, orAL, or more than two SSLs (ifestablished) or if results indicate a significant change inwater quality at any monitoring point,

Note: Examples of significant changes

- Detection of a VOC or other hazardous constituent notdetected in background;

- Exceedance of a Table 1 or 3 value listed in OAR 340-40unless the background water quality is above thesenumerical limits;

- Exceedance of a Safe Drinking Water Standard; or

- Detection of a compound in an order of magnitude higherthan background.

None of the above

...then:

1. Notify DEQ in writing within 10 daysof receipt of laboratory results; and

2. Perform resampling immediately andevaluate results as describedbelow.

Note: If this is a known release,previously confirmed to DEQ in writing.resampiing is not required.

Continue groundwater monitoring withnext scheduled sampling event.

19.4 Resampling results

Upon receipt of data from resampling, the permittee must review the analytical results according to the protocolsestablished in the most currently approved site-specific Environmental Monitoring Plan.

Jlfresnmpling^dataLShbwf results^ ^ ^^ ^: ;,

That confirm the exceedance of at feast onepermit-specific concentration limit (PSCL) orconcentration limit variance (CLV).

*See Attachment 1: Parameter Groups

That confirm the significant change in waterquaiity results noted in the routine samplingevent or confirm that at least any one AL ormore than two SSLs were exceeded.

That do not confirm the results noted in theroutine sampling event.

•^—ttiisn.^''.'" f-.'.-:...': '•.•'.'^':. .'K''^^^^-- "j ~:;^'^;. • ^•' ^;"': ^^-S ^.^'' ;""'^ :^'^'~^ \- ••'^

1. Notify DEQ in writing within 10 days of receipt oflaboratory data, or within 60 days of the sampledate (whichever occurs first); and

2. Submit a Remedial investigation workplan for DEQapproval within 90 days of the date of resampling.Plan must specify how the objectives of OAR 340-40 will be met by the proposed investigation. Thismay include the monitoring of Groups 4 & 6*parameters, in addition to routine detectionmonitoring.

Notify DEQ in writing within 10 days of receipt oflaboratory data, or within 60 days of the sample date(whichever occurs first); and

Submit a plan within 30 days (unless another timeperiod is authorized) for developing an assessmentprogram to DEQ.

1. Continue with routine monitoring; and

2. Discuss the data from the routine sampiing eventand the resampling results in the next annualenvironmentai monitoring report.

19.5 Methane limits

The methane concentration must not exceed:

• Twenty-five percent of methane's Lower Explosive Limit in onsite structures (excluding gas control systemstructures or components); or


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• Methane's Lower Explosive Limit in soil gas at the facility property boundary.

Note: Methane's Lower Explosive Limit is equal to a concentration of five percent by volume in air.

19.6 Methane exceedance

If methane levels exceed the specified limits the permittee must:

• Take immediate steps to protect human health and safety and notify DEQ;

• Notify DEQ within 24 hours at 503-229-5353 and via e-mail at info0ideg.sfate.or.us;

• Within seven days after the detection, confirm the measures taken to protect human health and safety(unless DEQ approves an alternative schedule), and describe the methane test resuits and responsemeasures in the facility operating record; and

• Within 60 days of the methane exceedances, develop and implement a remediation plan, incorporate theplan into the monitoring records, and submit a progress report to DEQ.

19.7 Certified environmental laboratory data

To ensure the best possible data quaiity, DEQ suggests that the permittee contract with environmental labs certifiedunder the Oregon Laboratory Accredited Program (ORLAP) or the National Volunteer Laboratory AccreditationProgram (NVLAP). The permittee should inciude a copy of the lab's certification with every data submittal. Use ofan ORLAP or NVLAP approved lab will facilitate DEQ's future review of Environmental Monitoring Plan (EMP)updates, Annual Environmental Monitoring Reports (AEMRs), and RI/FS documents.

20.0 RECORDKEEPING AND REPORTING - ENVIRONMENTAL MONITORING20.1 AEMR submittal

Prior to October 1 of each year, the permittee must submit to DEQ two copies (one paper copy and one electroniccopy) of an annual monitoring report (AEMR) covering the past year from July 1 to June 30. The report mustconform to the format detailed in the approved EMP and be prepared and stamped by a Registered Geologist or aCertified Engineering Geologist, with current Oregon registration. The report must follow the format approved in theEnvironmental Monitoring Plan.

Note: The permittee is strongly encouraged to submit reports printed on both sides of the paper.

20.2 Statement of compliance

The AEMR must include a brief (approximately one-page) cover letter that:

• Compares the analytical results with the relevant monitoring standards including concentration limits, whendeveloped;

• Concludes whether or not any federal or state standards were exceeded for relevant media; and

• Concludes whether any significant change occurred in water quality, land quality, air quality or methanelevels.

20.3 AEMR contents

Each AEMR must reflect actual conditions at the facility. Data presented in the reports must be as error free aspossible compared to the original field and lab data. The AEMR, at a minimum, must contain:

• Review of all significant events that occurred at the site during the last year;

• Review of the monitoring network performance and recommendations for changes;

• A summary of all the data coiiected in the past year media including, but not limited to: groundwater,surface water, leachate (iagoon, LDS and/or SLCS), and LFG (include any air sampie data), and soilsamples;

• A summary of any data problems (examples could include, but not limited to QA/QC failures, flagged data,switched samples, etc.);

• Piezometnc maps for each sampling event for each monitored water-bearing zone of concern;


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• Time-history plots for field specific conductivity, dissolved oxygen, and all group 1 b and group 2a and 2bparameters;

• Copy of the lab certification, if appiicable (ORLAP or NVLAP); and

• A copy of ail field and lab data for the past year.

20.4 Annual leachate volume report

Prior to October 1st of each calendar year for the duration of this permit, the permittee must submit an annualsummary monitoring report for the leachate program to DEQ as part of the AEMR.

20.5 Annual leachate volume report contents

The AEMR must reflect the facility's current condition, present accurate data that correspond with the original fieldand lab data, and include the elements presented in the most recentiy approved EMP.

20.6 Split sampling submittal

Within 90 days after any split-sampling event, the permittee must submit the foilowing information to DEQ'slaboratory:

• A copy of all information pertinent to the sample collection handling, transport and storage, including fieldnotes;

• Copies of a!l laboratory analytical reports;

• Copies of all laboratory QA/QC reports;

• Copy of the lab certification (including ORLAP or NVLAP);

• Site map showing fiow directions and contours; and

* Any other data or reports requested by DEQ,

20.7 Lab address

Report all required split-sampling information to:

Oregon Department of Environmental QualityLaboratory, Groundwater Monitoring Section3150 NW 229th Avenue, Suite 150Hiiisboro,OR 97124Phone: (503) 693-5700Fax: (503) 693-4999

20.8 DEQ response to split samples

If the permittee submits all required spiit-sampiing data and requests DEQ's results, DEQ's lab may provide, to thepermittee, copies of the following information:

• DEQ's analysis of the split sample;

• The QA/QC report;

• The analytical report; and

• The field data sheets

21.0 ENVIRONMENTAL MONITORING NETWORK21.1 Well installation

For future units, the permittee must ensure that DEQ-approved background and detection and/or compliance wellsare in place for any future units at least 12 months before refuse is accepted for disposal in the new cells. Thisrequirement may be waived or modified in writing by DEQ if adequate justification is made.


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21.2 Monitoring devices

To ensure that every sample is representative of the site's environmental conditions, the permittee must protect,operate, and maintain all environmental monitoring stations and equipment in accordance with DEQ'srequirements.

The permittee must clearly label ail monitoring stations with the monitoring location identification described in thispermit and/or the EMP in addition to an Oregon Water Resources Department Well identification Label, if required.The permittee must monitor and maintain labels such that they are clearly iegible.

Reference: OAR 640-240-0024 and 640-240-0026.

21.3 Access to monitoring devices

The permittee must maintain reasonable ali-weather access to all monitoring devices and/or locations in order tofacilitate sample collection and/or inspection.

21.4 Damage reporting

Any damage to a monitoring device must be reported to DEQ in writing within 14 days of the discovery, along with adescription of proposed repair or replacement measures and a schedule to complete this work.

Examples: damage impairing well function or changing the physical location to any degree.

21.5 Device construction

The permittee must complete any monitoring well or gas monitoring probe abandonment (decommissioning),replacement, repair, or instaifation in a manner that complies with the Water Resources Rules, OAR 690-240.

21.6 Well construction reporting

All monitoring weil repairs, abandonments, replacements, and installations, including driller's logs, well locationinformation, and construction information must be documented in a report prepared and stamped by either aGeologist or a Certified Engineering Geologist with current Oregon registration. The report must be submitted toDEQ within 30 days of the action and included in the nextAEMR.

21.7 Reporting well construction and repairs

The permittee must submit a recommendation to DEQ to decommission or replace any well in the monitoringnetwork that:

• Has been installed in a borehoie that hydraulically intersects two saturated strata;

• Does not have the corresponding and necessary supporting documentation of appropriate installation orconstruction; or

• Is damaged beyond repair or destroyed during the time frame of this permit.

21.8 Well decommissioning or replacement

The permittee must submit a written recommendation to DEQ prior to decommissioning or replacing any well or gasmonitoring probe in the monitoring network. After receiving DEQ's approval, the permittee must decommission orreplace any weli or gas probe that meets the following criteria;

• The well or gas probe was installed in a borehole that hydraulicaliy intersects two saturated strata;

• The permittee lacks supporting documentation demonstrating that the well or gas probe was properlyinstalled and constructed;

• The well or gas probe was damaged beyond repair or destroyed; or

• Other reasons as determined by either the permittee or DEQ.

Permit Number: 1203Expiration Date; July 1, 2026

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COMPLIANCE SCHEDULE

22.0 SUMMARY OF DUE DATES22.1 Summary

The following is a summary of reporting required by this permit. This section does not include permit-requiredroutine reporting and submittals required by this permit.

Event-driven compliance dates:

Due Date

Within 48 hours of discovery ofnon-hazardous prohibited waste

Within 7 days

Immediately

At least six months prior to theanticipated construction date

Within 90 days of compietingconstruction

6 months prior to final closure ofany portion of the landfill

Within 30 days of permitissuance

Within 24 hrs. of methaneexceed ance

Within 7 days of detectedmethane exceedance

Within 60 days of methaneexceedance

14 days after discovery ofdamage to a monitoring device

Within 30 days of theconstruction or repair action

Activity

Transport non-hazardous prohibited wasteto a disposal site authorized to accept suchwaste

Notify DEQ and initiate procedures toidentify and remove hazardous orsuspected hazardous waste

Oil or hazardous materiaSs spill

Engineering design plans for new disposalunits, closure of existing units, or otherancillary facilities for DEQ review

Submit Construction Certification Report

Submit an engineered closure pian andpost-closure plan

Recording of modified deed

Notify DEQ of methane level exceedances

Confirm measures taken to protect humanhealth and safety

Develop and implement a reduction planand submit progress report to DEQ

Submit proposal to repair or replace

Submit well construction or repair report

See section...

9.1 Discovery ofprohibited wastes

9.1 Discovery ofprohibited wastes

9.2 Spills notification

10.1 Design Plans

10.5 Constructioncertification reportsubmittai

11.1 Final EngineeredClosure plan

11.6 Deed record

19.6 Methaneexceed ance

19.6 Methaneexceedance

19.6 Methaneexceed ance

21.4 Damage reporting

21.6 Well constructionreporting

Recurring compliance dates:

Due Date

Specified due date on invoice

Activity

Solid waste fees

See section...

8.4 Fees


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Monthly

By every September 15

By every September 15th

By every September 15th

At least 10 days prior tosampling event

At least 45 days prior to splitsampiing event

By every October 1

Within 90 days after a splitsampling event

Physical inspection of site

Submit a facility status evaluation

Submit an Annual Financial AssuranceRecertification Report

Submit an Annual Financial AssuranceRecertification Report

Notify DEQ of scheduled date of sampling

Schedule split-sampiing events with DEQ.

Submit an AEMR

Submit ail required documentation to DEQ

12.3 Inspection

13.1 Evaluation

14.3 Recertification offinancial assurance

14.3 Recertification offinancial assurance

17.1 Notification

17.2 Split sampling

20.1 AEMR submitta!

20.6 Split samplingsubmittal


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ATTACHMENTS

23.0 ATTACHMENT 1: PARAMETER GROUPS

This attachment describes the parameter groups and any associated requirements for environmenta! monitoring.

Note: Method means EPA SW 846 Method [suggested methods are in square brackets].

23.1 Group 1a: Field indicators

The following parameters comprise the field indicators parameter group;

• Elevation of water level • Specific Conductance

PHTemperature

Dissolved OxygenEh

These parameters must be measured in the field at the time samples are collected, either down-hole in situ, in aflow-through cell, or immediately following sample recovery, with instruments calibrated to reievant standards.

23.2 Group 1 b: Leachate indicators

The following parameters comprise the laboratory indicators parameter group:

Hardness (as CaC03)

Total Aikalinity (as CaCOs)Total Organic Carbon (TOO)

pH (lab)

Total Dissolved Solids (TDS)

Total Suspended Solids (TSS)Chemical Oxygen Demand (COD)

Biochemical Oxygen Demand (BOD)

Specific Conductance (lab) [Method 9050]

Sample handling, preservation, and analysis are determined by requirements for each individuai analyte: EPA orAWWA Standard Methods techniques must be followed.

23.3 Group 2a: Common anions and cations

The following parameters comprise the common anions and cations parameter group:

Calcium (Ca)

Sulfate (S04) [Method 9035]Ammonia (NHs)

Sodium (Na)Nitrate(N03) [Method 9210]

Silica (Si02)

Iron (Fe)

Manganese (Mn)

Magnesium (Mg)

Chloride (Ci) [Method 300.0]

Carbonate (COs)

Potassium (K)Bicarbonate (HC03)

Ammonium (NH4)

Dissolved concentrations must be measured. Samples must be fieid-filtered and field-preserved according tostandard DEQ ancf/or EPA guidelines and analyzed by appropriate EPA or AWWA Standard iVIethods techniques.Results must be reported in mg/L.

23.4 Group 2b: Trace metals

The following parameters comprise the trace metals parameter group:

Antimony (Sb)Arsenic (As)

Barium(Ba)

Beryllium (Be)

Cadmium (Cd)

Chromium (Cr)

Cobalt (Co)

Copper (Cu)Lead(Pb)

Nickel (Ni)

Selenium (Se)Silver (Ag)Thallium (T!)

Vanadium (V)

Zinc (Zn)


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If the Total Suspended Solidsconcentration is...

less than or equa! to 100,0 mg/L in thesample

Greater than 100.0 mg/L in the sample

then analyze for...

total concentrations (unfiltered)

both total (unfiltered) and dissolved (field-filtered)

Samples must be fieid-preserved according to standard DEQ and/or EPA guidelines and analyzed by EPA Method6010 or DEQ-approved equivalent (EPA Method 200.8).

23.5 Group 3: Volatile organic constituents

Analysis for all compounds detectable by EPA Method 8260A or EPA Method 524.2, including a library search toidentify any tentatively identified compounds present EPA Method 8260 comprises the volatile organic compoundsparameter group. Facilities that want to use EPA Methods 8021 ,or 8240B, as an alternative must obtain approvalby DEQ prior to use.

23.6 Group 4: Assessment monitoring

The following analyses comprise the assessment monitoring parameter group:

• Semi-voiatife Organic Compounds, including phenols, EPA Method 8270

• Mercury, EPA Method 7470 orWPCL SOP 10

• Cyanide, SM 4500-CN

• Nitrite

All Method 8270 analyses must include a library search to identify any tentatively identified compounds present.

23.7 Group 5: Surface water and leachate

The following parameters comprise the surface water parameter group:

Total Kjeldahl Nitrogen (TKN)

Total Phosphorus (P)

Orthophosphate (P04)Bioiogical Oxygen Demand (BOD)

Total Coliform Bacteria [EPA Method 9221 or 9223]

Fecal Coliform Bacteria [EPA Method 9221 or 9223]E. Coli

23.8 Group 6: Other Assessment parameters

The following comprise additional assessment parameters:

• Dioxins and Furans [EPA Methods 1613B, 8280, and/or 8290A]

• Phenolics [EPA Methods 9065, 9066, and 9067]

• PCBs [EPA Methods 8082 and 8270]

• Pesticides, Herbicides and Fungicides [EPA Methods 8081A, 8141, 8150,8151,8270]

24.0 ATTACHMENT 2: PSCLs, ALs, and SSLs

Permit-Specific Concentration Limits (PSCLs), Concentration Limit Variances (CLVs), Action Limits (ALs), and SiteSpecific Limits (SSLs) for Columbia Boulevard WWTP Lagoon Solids Monofill have not yet been established.