UST Cleanup Manual 

Cleanup Rules for Leaking Petroleum UST Systems 

OAR 340-122-0205 through 340-122-0360 

and Associated Guidance Documents 

-O^ 

DEQ 

Sfate of Oregon 

Department of 

Environmental 

Quality 

Land Quality Division 

Underground Tanks 

Program 

811 SW Sixth Ave. 

Portland, OR 97204 

Phone:(800)742-7878 

Fax; (503) 229-6977 

www.deq. state, or. us 

Originally Published -

December 2000 

Editorial Updates -

January 2008 & 

May 2009 

Mitch Scheel 

09-LQ-068 

PRINTED ON RECYCLED PAPER 
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Oregon Department of Environmental Quality - Underground Storage Tank Program 

INTRODUCTION 

This manual contains guidance on using the Department of Environmental Quality (DEQ, or Department) 

underground storage tank (UST) cleanup rules. These rules, which include Oregon Administrative Rule (OAR) 340-

122-0205 through 340-122-0360, describe the actions you (the responsible party) must take if petroleum products leak 

from your regulated UST, and define the procedures and standards for cleaning up the released product. 

This document contains: 

• General Information on the UST program including information on reporting releases of petroleimi products from 

USTs, contacting DEQ UST regional staff, permit requirements, cost recovery, etc.; 

• UST Cleanup Rules with revisions adopted in November, 1998, along with a flowchart, outline and an 

explanation of each of the rules; 

• UST Cleanup Guidance on topics such as writing reports, analytical requirements, use of institutional controls, 

options for handling soil piles, etc.; and 

• Forms Used for UST Cleanup Projects including copies ofthe release report form, decommissioning/change-inservice forms, soil matrix checklist and scoresheet; and 

• References and Addition^ Guidance containing a list of documents from DEQ, EPA, and other sources, including 

the intemet address where each can be obtained, that you may fmd useful for UST cleanup projects. 

Note on Heating Oil Tanks: This UST Cleanup Manual does not apply to underground heating oil tank cleanups 

except as specified In OAR Chapter 340, Division 177. The Division 177 mles were updated In February 2000 to 

Include provisions for voluntary decommissioning of underground heating oil tanks. In 1999, the Oregon Legislature 

changed the heating oil tank program significantly by having contractors, rather than DEQ, certify cleanups and 

decommisslonlngs. If you have questions about heating oil tanks, please leave a message on the UST Program 

Helpline, 1-800-742-7878 (toll free In Oregon). You may also wish to refer to the heating oil tank rules and guidance 

documents that can be found on the UST Program web site (see address below). 

This manual will be updated as new guidance becomes available. We invite you to visit our web site frequently to look 

for updates and other guidance documents and forms relevant to the UST Cleanup and Compliance Program. Our web 

site address is: . 

http://www.deq.state.or.us/lq/tanks/ust/index.htm 

UST Cleanup Manual May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

ACKNOWLEDGMENTS 

This manual was written by a team of DEQ staff, including 

Michael Anderson, 

Robert Hood, 

Henning Larsen, 

Laurie McCulloch, 

Deanna Mueller-Crispin, 

O. J. "Bud" Roman, 

Bruce Scherzinger, 

Richard Silverman, and 

Robert Williams. 

An earlier draft was released for public comment, and many others confributed ideas and helped to review this 

document. 

Suggestions for Improvement: Comments and suggestions for improvement of this guidance document are welcome. 

Please send your comments to: 

Department of Environmental Quality 

UST Program Policy Coordinator 

811 SW Sixth Avenue 

Portland, OR 97204 

UST Cleanup Manual ii May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

CONTENTS 

INTRODUCTION I 

Acknowledgments ii 

SECTION 1: GENERAL INFORMATION 1 

Section 1.1: How to Report an Underground Storage Tank Petroleum Release 1 

Section 1.2: UST Program Offices 3 

Section 1.3: Transition Policy for Ongoing UST Cleanup Projects..... 5 

Section 1.4: Permit Requirements for UST Cleanup Sites 6 

Section 1.5: Policy for Reuse of Petroleum Contaminated Soil 9 

Section 1.6: UST Supervisor and Service Provider Requirements 10 

Section 1.7: Cost Recovery for Departmental Oversight Work 11 

SECTION 2: UST CLEANUP RULES 13 

Section 2.1: Overview of UST Cleanup Rules 13 

Section 2.2: Rules Flowchart .- 14 

., Section 2.3: Outline of Rule Sections 15 

Section 2.4: Cleanup Rules for Leaking Petroleum UST Systems 16 

Section 2.5: Summary of Each Rule 42 

SECTION 3: UST CLEANUP GUIDANCE 56 

Section 3.1: Writing Cleanup Reports and Corrective Action Plans 56 

Section 3.2: Example Reports and Outlines : 69 

Section 3.3: Analytical Requirements 76 

Section 3.4: Site Controls 86 

Section 3.5: How to Handle Sites With Multiple Cleanup Options 87 

Section 3.6: Handling and Treating Petroleum-Contaminated Soil 88 

Section 3.7: Sample Calculations for Air Emissions 91 

Section 3.8: Answers to Common UST Cleanup Questions 93 

SECTION 4: FORMS USED FOR UST CLEANUP PROJECTS ,...96 

Section 4.1: Petroleum Release Form 97 

Section 4.2: Cost Recovery Agreement 100 

Section 4.3: UST Decommissioning Checklist and Site Assessment Report Report 102 

Section 4.4: Soil Matrix Checklist and Score Sheet 110 

SECTION 5: REFERENCES AND ADDITIONAL GUIDANCE 112 

Section 5.1: References 112 

Section 5.2: Additional Guidance Documents 113 

UST Cleanup Manual iii May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

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UST Cleanup Manual iv May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 1: GENERAL INFORMATION 

SECTION 1.1: How TO REPORT AN UNDERGROUND STORAGE TANK PETROLEUM RELEASE 

OAR 340-122-0220 requires the responsible person to report confirmed and suspected releases from UST 

systems to the Department within 24 hours. In addition, OAR 340-160-0020(9) requires licensed UST service 

providers to report a release to the Department within 72 hours if the responsible person does not. 

l.Ll: What is a release? 

There are two types of pefroleum releases, "suspected" and "confirmed." 

A "Confirmed Release" (OAR 340-122-0210(8)) means that petroleum contamination has been observed in soil or 

groundwater as a sheen, stain, or petroleum odor, or pefroleum contamination has been detected in soil by the analytical 

method NWTPH-HCID, or detected in groundwater by any appropriate analytical method specified in OAR 340-122-

0218. In other words, you have actually seen, smelled, or measured the contamination using some acceptable method. 

These observations are usually made in and around the tank pit so that there is no doubt that the release came from your 

tank system. 

A "SuspectedRelease" (OAR 340-122-0210(31)) generally means finding evidence at your site or in the surrounding 

area (e.g., the presence of free product or vapors in soils, basements, sewer and utility lines, and nearby surface water) 

that indicates that your tank very likely has a leak. Other such evidence could include unusual tank system operating 

conditions (e.g., the erratic behavior of product dispensing equipment, the sudden loss of product from the UST 

system, or an unexplained presence of water in the tank); and monitoring results from a release detection method that 

indicates a release may have occurred. 

L1.2: How to Report a Release 

When a release is suspected or confirmed, you must report it within 24 hours' of discovery. Telephone the appropriate 

DEQ regional office (see Section 1.2: UST Program Offices) to contact a UST Cleanup project manager or leave a 

voice mail message during regular business hours. To report an emergency situation or to report a release when DEQ 

offices are closed, call the Oregon Emergency Response System (OERS) at 1 -800-452-0311 (in state). Be prepared to 

provide the following types of information to DEQ or OERS: 

Facility name, address, and. If the tank has an UST pennit, the UST facility Identification number • Name, address, 

and phone number ofthe responsible person, a contact person, and the person who Is reporting the release • Date 

the release was discovered • How release was discovered or conflnned • What caused the release (leak, overfill, 

spill) • Date the release was stopped • What type of product was released • The amount of product released • 

What emergency response measures were taken, if any • What Is the environmental Impact (soil contamination, 

groundwater contamination, surface water contamination, vapors In buildings) • Is there any off-site migration • 

Date cleanup was Initiated • What Is the cunent status of cleanup activities, and • Ifany contaminated materials 

have been removed from the site, where they have been disposed. 

You may also report a release by completing a DEQ Petroleum Release Form and faxing the information to the appropriate 

regional office. A copy ofthe form, which you can photocopy, fill out, and fax to the appropriate DEQ regional office, can 

be found in Section 4.1: Pefroleum Release Form^. Be sure to complete all sections that apply to the release. 

' For heating oil tanks you are required to report releases within 72 hours. See OAR 340-177-0055. 

^ Check for updated versions of this release form on the UST website: http: .-'.'ww w. deq. slate, or. us.'lq/tanks''ust/index. htm 

UST Cleanup Manual 1 May 2009 
Oregon Department of Environmental Quality - Underground Storage tank Program 

NOTE: The most current versions of UST and UST cleanup forms, including interactive forms that can be filled out 

right on the screen and then printed, can be found on DEO's Website at: http:.''/\vww.deq.state.or.us/pubs./fon-ns.htm. 

DEO recommends vou either use the interactive forms or download the most current versions to use. 

L1.3: Obtaining a Project Log Number (also known as a Petroleum Release Number) 

Whether you fax a release report to DEQ or report the release by leaving a voice mail message, the release has not 

been officially reported until DEQ assigns a Log Number to the project. Generally this number will be faxed back or 

your phone call will be retumed the same day. However, if you do not receive this confirmation, please check back 

with the regional office to confirm that the fax fransmission went through or the voice-mail message was received. 

DEQ may require additional information depending on how severe the release is. 

Note: Since the Cleanup Manual was published in December 2000, DEQ has developed an on-line release reporting 

protocol for UST and HOT Service Providers. To leam more about the on-line release reporting protocol go to: 

http://\\^vw.deq.state.or.us/lq/tanks/report.htm 

LL4: What Happens After a Release is Reported? 

After a release is reported, DEQ begins certain adminisfrative actions, such as entering infonnation into our statewide 

database. We then send you a letter with information about applicable regulations, report requirements and due dates, 

and cost recovery. This letter will also inform you that you have an opportunity to request expedited review by DEQ. 

For more information, refer to Section 1.7: Cost Recovery for Departmental Oversight Work. 

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Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 1.2: UST PROGRAM OFFICES 

The following map shows the three DEQ regions. The locations of regional offices that include UST program staff are 

marked with circles. A table containing the address, phone number, and fax number for each of these offices can be 

found on the next page. A list ofthe counties covered by each regional office is also provided for your reference. 

NORTHWEST REGION 

WESTERN REGION 

MALHEUR 

EASTERN REGION 

UST Cleanup Manual May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

REGION 

RegionalOffice Address/Phone/Fax Counties Covered 

NORTHWEST REGION 

Portland 2020 SW Fourth, Suite 400 

Portland, OR 97201 

Phone: (503)229-5263* 

Fax: (503)229-6945 

Clackamas, Clatsop, 

Columbia, Multnomah, 

Tillamook, Washington 

EASTERN REGION 

The Dalles 400 E. Scenic Drive, Bldg. 2 

Suite 307 

The Dalles, OR 97058 

Phone: (541) 298-7255 ext. 0** 

Fax: (541)298-7330 

Baker, Crook, Deschutes, 

Harney, Hood River, Gilliam, 

Grant, Jefferson, Klamath, 

Lake, Malheur, Morrow, 

Sherman, Umatilla, Union, 

Wasco, Wallowa, Wheeler 

WESTERN REGION 

Salem 

Eugene 

Coos Bay 

750 Front Street, NE, Suite 120 

Salem, OR 97301 

Phone: (503) 378-8240 ext. 0** 

Fax: (503)373-7944 

165 East 7*^ Avenue Suite 100 

Eugene, OR 97401 

Phone: (541) 686-7838 ext. 0 " 

Fax: (541)686-7551 

381 N. Second Street 

Coos Bay, OR 9797420 

Phone: (541) 269-2721 ext. 31 

Fax: (541)269-7984 

Benton, Lincoln, Linn, Marion, 

Polk, Yamhill 

Lane 

Coos, Curry, Douglas, 

Jackson, Josephine 

This phone number will connect you with a receptionist. Ask to speak with the UST Duty Officer. 

NOTE: The information in this table was updated in May 2009. 

UST Cleanup Manual May 2009 
Oregon Department of Environmental Quality -Underground Storage Tank Program 

SECTION 1.3: TRANSITION POLICY FOR ONGOING UST CLEANUP PROJECTS 

The following is a copy ofthe Underground Storage Tank Program Policy Statement signed by Michael H. Kortenhof, 

UST Program Manager, on March 3, 1999. 

Transition into the 11/2/98 Amendments to the UST Cleanup Rules 

OAR 340-122-0205 through 340-122-0360 

I. Background 

On October 30,1998, the Environmental Quality Commission approved revisions to the Underground Storage Tank 

Cleanup Rules (OAR 340-122-0205 through 340-122-0360). The revisions became effective on November 2,1998. 

Since there are many sites in various stages of cleanup under the previous version ofthe rules (10/1/92), the UST 

program has developed the following policy to ensure a fair and consistent approach for handling UST cleanup sites 

during the transition to the revised rules. 

II. Policy Statements 

1. Sites reported to the Department on or after 11/2/98 must meet all applicable requirements ofthe revised UST 

Cleanup Rules. 

2. Sites reported to the Department prior to 11/2/98 must take one ofthe following actions based on where they were 

in the cleanup process at the time the rule revisions went into effect: 

a. Sites which were operating under a Department-approved cleanup plan prior to 11/2/98 may continue under the 

approved plan including eventual closure based on cleanup levels and requirements in effect at the time the plan 

was approved. 

b. Sites which have not completed an investigation, or submitted a cleanup proposal to the Department prior to 

11/2/98 must carry out all future actions under the revised cleanup rules. 

c. Sites which submitted proposals for cleanup to the Department prior to 11/2/98, but which were not yet 

approved at that time, will be considered for completion under the old rules. The decision to complete site work 

under the old rules will be based on the completeness ofthe reported investigation, and the apparent adequacy of 

the proposed remedy. 

d. Sites which would be allowed to complete work and seek closure under the old rules may opt to seek closure 

under the revised rules. Such closures may not be based on a combination of old and revised rules unless preapproved by the Department. 

3. Notwithstanding Policy Statement 2, the Department may apply the requirements ofthe revised rules to sites 

reported prior to 11/2/98 if necessary to adequately protect public health, safety, and welfare and the environment. 

USTCIeanup Manual 5 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 1.4: PERMIT REQUIREMENTS FOR UST CLEANUP SITES 

Depending on the site-specific conditions of your UST cleanup project, you may need to obtain up to three additional 

permits to carry out the cleanup work at your site: 

• 

Air Quality Discharge Permit; 

Water Quality Permit; and/or 

• Solid Waste Letter Authorization Permit. 

1.4.1: Air Quality Discharge Permit 

You must give prior notice to the DEQ if your pro]posed method of cleanup will produce emissions to air (such as air 

sfrippers or vapor extraction systems). An air quality permit may be required if you expect to discharge more than 10 

tons (20,000 pounds) of volatile organic compounds (VOCs) in any given calendar-year (January 1 - December 31). 

Emissions of 10 tons/year or more ofany individual hazardous air pollutant (HAP)", or 25 tons/year or more total 

HAPs also require an air quality permit. Remediation systems with emission rates that are below these thresholds but 

cause nuisance conditions may also be required to get a permit. 

Note: In Lane County, Air Quality Permits are Issued by the Lane Reglorial Air Pollution Authority (LRAPA). For 

more information, please contact LRAPA at 541-726-2514. 

Most UST remediation systems do not approach the 10-ton limit. However, many of these systems do have the 

potential of causing nuisance conditions or impacting the heeilth and safety of individuals working or residing in the 

vicinity of the site. To address this concem the DEQ asks that you evaluate the human health risks resulting from 

exposure to hazardous air pollutants discharged from your remediation system. If the calculated health risks are 

significant, you will be asked to freat or otherwise confrol the impacts of the discharge. A sample calculation is 

provided for your reference in Section 3.7: Sample Calculations for Air Emissions. For more information, please 

contact the UST project manager assigned to your site. 

1.4.2: Water Quality Permit 

Some cleanup projects may require a DEQ water quality permit to discharge water from an excavation orto discharge 

treated water from a groundwater treatment system. 

Water Quality 1500-A and 1500-B permits relate to the discharge of petroleum-contaminated water that has been 

freated to limits specified in those permits. How and where the contaminated water is discharged—to surface waters 

or applied to the land — will determine which permit is required. 

The 1500-A Permit is a General-National Pollutant Discharge Elimination System (NPDES) Waste Discharge Permit, 

which is a federal permit issued by the Department of Environmental Quality. This permit is required any time 

contaminated groundwater or surface water needs to be discharged and has the potential of reaching any surface water 

(e.g.,, streams, storm sewers, ditches, intermittent streams). The conditions of the permit cannot be modified. A 

minimum of 10:1 dilution (sfreamfiow versus discharge flow) must be maintained in the sfream receiving your site's 

pettoleum-contaminated water. 

^ Hazardous air pollutants (HAPs), also known as air toxics, are those air pollutants known or suspected to cause serious 

health effects including cancer. 

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Oregon Department of Environmental Quality - Underground Storage Tank Program 

Note: Even if you get a NPDES permit from the Department, you still have to obtain permission from the local 

jurisdiction before you can discharge into a stomi sewer. You should document this approval in your report by 

Including the name of the authorizing agency, the contact person's name and phone number, and the date of 

approval. If approval was given in a letter, please Include a copy ofthe letter. 

The 1500-B Permit is a General-Water Pollution Control Facilities Permit, which is a state permit also issued by 

DEQ. The 1500-B permit governs treated contaminated water that is applied on land. Although the permit does have 

higher discharge limits than the 1500-A, it prohibits other conditions, such as surface run-off and overloading the land 

with nutrients and organics. 

A 1500-B Permit must also be obtained when conducting bioremediation activities at a pefroleum hydrocarbon 

cleanup site. Bioremediation activities covered by the permit include in situ treatment of contaminated soil and 

groundwater. One ofthe primary conditions ofthe permit is that these activities shall not cause adverse impacts to 

groundwater beyond the project area. An application for this type of permit must include a Bioremediation 

Management Plan as described in Schedule C ofthe general permit. All imderground injection wells used in the 

bioremediation project must be registered with the Department. 

Note: A water quality permit from DEQ is not required for contaminated water that is othenwlse managed through a 

public treatment system or other treatment facility authorized by DEQ. However, vou must have prior permission 

from that municipal authority. 

You should document this approval In your report by including the name of the authorizing facility, the contact 

person's name and phone number, and the date of approval. If approval was given In a letter, please include a copy 

of the letter. 

You do not need a permit to discharge clean (i.e., non-treated and non-contaminated) water meeting the turbidity 

standards. 

In any discharge situation, whether a permit is required or not, the violation ofany local, state or federal rules and 

regulations is prohibited. If a permit is required, you must complete an application and pay applicable fees. If you 

have any questions or need copies ofthe permit application, please contact your regional DEQ office and ask for the 

Water Quality Permit Coordinator. Information about Water Quality permits can also be found on the DEQ website at: 

http://www. deq.state, or. us/wgAvapermit/permits. htm 

1.4.3: Solid Waste Letter Authorization Permit 

You may need a Solid Waste Letter Authorization permit (SWLA) if your proposal to handle pefroleum-contaminated 

soils (PCS) includes "treatment" or if removed soils will remain on your site for more than 30 days. 

If you remove PCS during an investigation or cleanup of petroleum contamination from an underground storage tank, 

you must either: 

• Dispose of this material at an approved solid waste treatment or disposal facility; or 

• Propose to freat and re-use the soil under an SWLA. "Treatment" includes on-site or off-site soil aeration, 

bioremediation, or thermal freatment with a mobile unit. 

You have 30 days to make this decision: vou must get a SWLA if removed soils will remain on vour site for more than 

30 days. , 

Note: You cannot use a SWLA to treat or dispose of soils contaminated with non-petroleum compounds or which 

are otherwise classified as "hazardous waste." 

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Oregon Department of Environmental Quality - Underground Storage Tank Program 

If you take the PCS to an approved freatment or disposal facility, you don't need a permit from DEQ. However, if you 

intend to treat and re-use the PCS either on- or off-site, you must apply for a SWLA before beginning treatment. The 

SWLA is a six-month letter permit with a potential one-time six-month extension. To get an extension of a SWLA, 

you will need to demonstrate to DEQ that your treatment method is effective and that you will reach the remediation 

goal within the second six-month period. 

To obtain a SWLA, you must also get approval from your local land-use authority (a city or county planning 

department) to use the property for this purpose. While you can typically get land-use approval for on-site treatment 

with a simple phone call, off-site freatment will require a Land Use Compatibility Statement (LUCS) signed by your 

local authority. In residential or other restricted use areas, your local land-use contact may require a formal review -

even for on-site treatment - by asking that you submit a request for a LUCS before land use is approved or denied. 

Your SWLA application must include: 

• A Soil Treatment Plan stating how you will effectively treat the PCS, and demonsfrate treatment progress and 

compliance with cleanup requfrements. It must include how you intend to manage the PCS so that you do not 

create public safety concems, environmental hazards, or nuisance conditions (such as water ran-on/run-off, 

odors or dust). 

• Signed Property Owner Statements from owners ofthe properties where treatment will occur, and where the 

treated soil will be reused. The statements document that the owners understand the restrictions that apply to 

these activities. 

• A $500 fee to DEQ or a signed cost recovery agreement. (For additional information on fees, please see 

Section 1.7: Cost Recovery for Departmental Oversight Work.) 

• A LUCS if off-site treatment is proposed (see above). 

The SWLA has specific permit conditions that must be met throughout the freatment period, including quarterly sampling 

and reporting. It does not exempt you from complying with any state, federal, or local rules or regulations. DEQ may 

rescind authorization for treatment at any time if the soil is not being managed properly. If you have any questions or 

need a SWLA application, contact your regional DEQ office and ask for an UST Cleanup project manager. 

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Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 1.5: POLICY FOR REUSE OF PETROLEUM CONTAMINATED SOIL 

This is a copy of Environmental Cleanup Division Policy No. 550, which was approved for use in the UST 

Cleanup Program on September 9, 1992. 

A. BACKGROUND 

Many leaking underground storage tank sites produce significant volumes of petroleum contaminated soils (PCS). 

Frequently the owners and operators of these sites wish to freat and reuse the PCS rather than dispose ofthe soils in 

landfills. In order to protect human health, welfare, and the environment, it is necessary for DEQ to establish a formal 

policy recommending standards for treatment and reuse of PCS. The purpose of the policy is to define the 

reconimended freatment standards which should be met in order to reuse PCS. 

B. APPLICABILITY 

This policy applies to treatment and reuse of soils contaminated by releases of petroleum products only. 

C. POLICY STATEMENT 

i' 1. Soils which will be used as backfill in the excavation from which they were removed^are required to be 

treated to the matrix cleanup standard applicable to the site of origin in accordance with OAR 340-122-0335.* 

2. Soils which will be used off-site should meet the appropriate Level 1 matrix cleanup standard for the 

substance released; if the soils are used off-site, the property ovmer receiving the treated soil should acknowledge 

in writing that the soils have been placed in accordance with this policy; this acknowledgment should also indicate 

that the owner ofthe property accepting the contaminated soil understands the nature and origin ofthe soils. 

3. In all cases, reuse ofthe treated PCS should be such that soils are placed above the seasonal high groundwater 

level and are isolated from human contact or possible exposure. Treated PCS should not be placed in wetlands or 

within the 100-year floodplain. 

4. In all cases, disposition of soils (including reuse on-site or off-site) must be reported to DEQ in accordance 

with OAR 340-122-0360. 

5. In accordance with OAR 340-122-0250 (corrective action plan requirements), DEQ will consider altemate 

cleanup standards for reuse of PCS on a case by case basis; under no circumstances will DEQ approve of cleanup 

standards which do not adequately protect human health, safety, welfare, and the environment. 

Although these freatment standards and reuse control measures are considered adequate to protect human health, 

safety, welfare and the environment, the Department strongly supports and encourages efforts to attain the lowest 

practicable freatment levels and thereby reduce the impact to the environment. 

DISCLAIMER 

This policy statement is intended solely as guidance for employees ofthe Department ofEnvironmental Quality. It 

does not constitute rulemaking by the Envfronmental Quality Commission and may not be relied upon to create a right 

or benefit, substantive or procedural, enforceable at law or in equity, by any person. DEQ may take action at variance 

with this policy statement. 

•^ For specific rule requirements, please refer to Section 2.4: Cleanup Rules for Leaking Petroleum UST Systems. 

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Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 1.6: UST SUPERVISOR AND SERVICE PROVIDER REQUIREMENTS 

The following is a list of the types of licenses required effective March 15, 2000 for companies and individuals 

working on underground storage tanks in Oregon. The mles listed for each license (for example, "OAR Chapter 340, 

Division 163") pertain to the mles that describe the service provider and supervisor requirements, not the cleanup 

regulations discussed in this document. To obtain copies ofthe mles mentioned below, please refer to Section 5.2: 

Additional Guidance Documents. 

SERVICE PROVIDERS 

TYPE OF LICENSE 

Heating Oil Tank Service Provider License 

UST Service Provider License 

UST Soil Matrix Cleanup Service Provider License 

ACTIVITIES COVERED, APPLICABLE RULES AND FEES 

Heating oiltank services - site assessment, cleanup, 

decommissioning 

OAR Chapter 340, Division 163 

$750 fee, 12 months 

Regulated tank services - decommissioning, installation/ 

retrofit, tightness testing, cathodic protection (company 

designates which activities they perforin) 

OAR Chapter 340, Division 160 

$300 fee, 12 months 

Regulated petroleum tank cleanups - This license no longer 

covers heating oil cleanups as of March 15, 2000 

OAR Chapter 340, Division 162 

$300 fee, 12 months 

Each license is separate and covers different services. There are certain regulations that apply only, to the specific 

license category. Depending on the type of services a company provides, it may need one, two, or three separate 

service provider licenses. Companies are responsible for obtainmg each license required for the work to be performed. 

SUPERVISORS 

UST Supervisors must have different types of licenses depending on the type of on-site work they are responsible for. 

A specific exam administered by Intemational Code Council (go to http:./.Avvyw.iccsafe.org/certification/ust-ast) must 

be taken and passed for each license category. The UST Program issues these licenses.' 

TYPE OF LICENSE 

Regulated Tank - Installation and Retrofit 

Regulated Tank - Decommissioning 

Regulated Tank - Tightness Testing 

Regulated Tank - Cathodic Protection 

Regulated Tank - Soil Matrix Cleanup 

Heating Oii Tank Services 

APPLICABLE RULES AND FEES 

OAR Chapter 340, Division 160, $150 fee, 24 mo. 

OAR Chapter 340, Division 160, $150 fee, 24 mo. 

OAR Chapter 340, Division 160, $150 fee, 24 mo. 

OAR Chapter 340, Division 160, $150 fee, 24 mo. 

OAR Chapter 340, Division 162, $150 fee, 24 mo. 

OAR Chapter 340, Division 163, $150 fee, 24 mo. 

' For more information on UST Program licensing, contact the program office at 503-229-6652, or leave a message on the 

UST Helpline at 1-800- 742- 7878 (toll-free in Oregon) and request a copy ofthe latest ICC UST/AST Examination 

Information. 

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Oregon Department of Envfronmental Quality - Underground Storage Tank Program 

SECTION 1.7: COST RECOVERY FOR DEPARTMENTAL OVERSIGHT WORK 

1.7.1: Who pays and why? 

Owners and operators of facilities or property contaminated by hazardous substances are responsible, under Oregon 

law, for cleaning up their sites. The UST Cleanup Program is responsible for ensuring that the cleanup is done in a 

way that protects human health and the environment. Oregon law requires the DEQ to recover from the responsible 

parties, the costs of carrying out this responsibility. DEQ invoices the responsible party for oversight ofthe project when 

more than $25 in costs have been incurred. Payment is due within 30 days. 

1.7.2: What DEQ costs are charged to responsible parties? 

Oregon laws authorize DEQ to charge all reasonable costs attributable to or associated with cleanup at a particular 

site. DEQ accounts for these costs as direct and indirect costs. 

Direct costs include DEQ staff salaries and wages, employee benefits such as health care, and employer payroll taxes. 

Direct costs attributable to a site may include but are not limited to time, equipment, and materials used by staff: 

Consulting with the owner and/or consultant • visiting the site • reviewing proposed cleanup actions • reviewing 

data and reports describing the type and extent of contamination • processing photos and covering other 

expenditures made specifically for the site • updating databases • making and receiving phone calls pertaining to 

the site'• and enforcing against violations. 

Indirect costs support the operation ofthe program, but are not directly related to specific projects. Typical indirect 

costs include: 

Office space, office equipment and supplies • supplies and equipment used In site investigations and other field 

activities • non-site-specific activities of project staff, such as training and administration • clerical, computer 

networi<, time accounting, invoicing, and grants management • development of technical guidance and polides • 

a share of DEQ centralized services, such as accounting, budgeting, human resources, and Information systems. 

1.7.3: How are individual site costs figured? 

DEO does not use standard hourly billing rates. Instead, DEQ calculates costs incurred directly for site work and then 

adds a factor to cover indirect costs. DEQ accounting systems record the time each employee works on a project. Staff 

time is charged to the project using an hourly rate calculated for each employee (salary and benefits). Indirect costs are 

calculated as a percent of directly charged personnel costs. Other costs incurred for specific cleanup projects, such as 

use of state cars, are also recorded and invoiced as direct costs. 

1.7.4: How are the indirect rates established? ^ 

The Land Quality Division's indirect rate is recalculated each year based on the actual ratio of indirect to direct costs 

from the previous year. DEQ prepares an annual report, which describes the methodology and shows expenditures 

used in the calculation. , ' 

The DEQ agency indirect rate is negotiated annually with the federal Environmental Protection Agency (EPA), so that 

indirect charges can be charged against federal grants and cooperative agreements. EPA requires that this indirect rate 

be charged to all DEQ activities. 

UST Cleanup Manual 11 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

1.7.5: Project Prioritization 

Federal funding allows DEQ to provide a minimum program to carry out the federal requirements and Oregon's 

legislative mandates to protect human health, safety and the environment. While cost recovery supplements the federal 

funding, it does not provide enough funding to keep pace with the demands on DEQ staff The information below 

describes how DEQ is handling this workload. 

The Department's High Priority Sites 

If your site is a high environmental priority, you can expect to hear from us 

DEQ uses a risk prioritization system to focus its limited resources on those sites with the greatest risk to human 

health, safety and welfare, and the environment. The prioritization system gives high scores to sites contaminating 

groundwater or surface water, or where there are off-site impacts. These high priority projects are assigned to an UST 

Cleanup project manager for technical assistance, review and general oversight during the cleanup process. As each 

cleanup of a high priority site is completed, the next highest priority site is assigned. 

Responsible Party's High Priority Sites 

If your site is a high priority for you, let us know through the agreement process 

An "agreement letter" option has been set up for people whose sites are lower on DEQ's priority list. This option is for 

those people whose own priorities are driving their cleanup and need DEQ sign-off on their site (e.g., to sell their 

property, obtain financing or insurance, etc.). You should receive an agreement letter in the packet of information sent 

to you when you first report the release. If you sign and retum this agreement, the DEQ knows that you are willing to 

cooperate and pay oversight costs. Under these cfrcumstances we can schedule the review of your site on a first-come, 

first-served basis. 

Important Note 

You are required by rule to proceed immediately with your site investigation and cleanup regardless of 

the priority of your site or when DEQ assigns a project manager to oversee your project. You m ust also 

comply with all environmental regulations, including all reporting requirements. Waiting for your site to 

work its way up DEQ's priority list carries some risks. By taking no action you will be in violation ofthe 

rules and potentially subject to enforcement. Also, contamination at your site may continue to move 

making future cleanup more difficult and more expensive. For these reasons you are encouraged to take 

action immediately as outlined in this guidance document. 

Eventually, your site will move up our priority list and we will get to it. We expect that if a competent service provider 

or consultant carefully follows the mles and the guidance, there should be no surprises when your site comes up for 

DEQ review. 

UST Cleanup Manual 12 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 2: UST CLEANUP RULES 

SECTION 2.1: OVERVIEW OF UST CLEANUP RULES 

The Department of Environmental Quality's Cleanup Rules for Leaking Petroleum Underground Storage Tank (UST) 

Systems (OAR 340-122-0205 through 340-122-0360) provide several options for cleaning up pefroleum-contaminated 

soil and groundwater. After carrying out all appropriate reporting, abatement, and mvestigation requirements in OAR 

340-122-0205 through 340-122-0240, you can complete an UST cleanup by demonsfrating that your facility* meets 

one or more ofthe following: 

• Low-impact site (LIS) requirements (OAR 340-122-0243); 

• Risk-based concenfrations (OAR 340-122-0244); 

• Generic remedy requirements developed by the Department (OAR 340-122-0252); or 

• Soil Mattix cleanup levels (OAR 340-122-0320 through OAR 340-122-0360). 

The option you select will depend on site-specific factors including the magnitude and extent of contamination, age of 

the release, contaminants found at the site, and land and water use. 

This section ofthe UST Cleanup Manual summarizes the requirements ofthe UST Cleanup Rules. A flowchart is 

included to show how the different mles relate to each other. The purpose of this section is to explain how the mles 

are intended to be applied. Although the summary and flowchart are provided for your guidance, you should always 

refer to the mles themselves for the specific requirements. 

Information about other guidance documents that may be helpful for UST cleanup projects can be found in Section 

5.2: Additional Guidance Documents at the back of this manual. 

REMINDER 

This guidance document Is limited to a discussion of Oregon Department of Environmental Quality UST Program 

cleanup rules. For you to properly comply with these mles, however, you will often need to understand and comply 

with other mles and regulations Including but not limited to the following: 

• Monitoring well Installation and well decommissioning requirements (Department of Water Resources); 

• Service Provider licensing by DEQ and constmction contractor registration requirements (Construction and 

Contractors Board); 

• Professional geologist or engineer registration requirements (separate Boards for Registered Geologists and 

Professional Engineers); 

• Other DEQ rules such as Hazardous Waste, Solid Waste, Water Quality, and Air Quality, depending on sitespecific situations; and 

• Local land use and fire prevention rules and ordinances. 

It is vour responsibility to ensure that you comply with all applicable rules and regulations when carrying out UST 

cleanup activities, and that you only employ people who are qualified to perform these tasks. 

"Facility" or "Site" means any building, structure, installation, equipment, pipe or pipeline including any pipe into a sewer 

or publicly owned treatment works, well, pit, pond, lagoon, impoundment, ditch, landfill, storage container, above ground 

tank, underground storage tank, motor vehicle, rolling stock, aircraft, or any site or area where a hazardous substance has 

been deposited, stored, disposed of, or placed, or otherwise come tobe located and where a release has occurred or where 

there, is a threat of a release, but does not include any consumer product in consumer use or any vessel 

UST Cleanup Manual 13 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 2.2: RULES FLOWCHAR T 

1 

Purpose (0205) 

Definitions (0210) Scope and Applicability (0215) Requirements & Options (0217) 

Sampling & Analysis (0218) 

Initial Response (0220) 

Initial Abatement (0225) 

If free product present, 

this is a concurrent pattiway. 

Initial Site 

Characterization (0230) 

Consider lil<ely remedy. If risl<-based, 

begin conceptual site model. 

Free Product Removal (0235) 

Investigation for Magnitude & 

Extent of Contamination (0240) 

No 

Continue free product removal 

as long as needed. 

' ' 

Soil Matrix (0320-0360) 

(For Soil Only) 

' ' 

Low Impact (0243) 

' 

\Conti 

' 

' ^ \ Yes . 

•Q\S'>y ^ ^ 

T 

i 

Risk-Based (0244) 

' ' 

Corrective Action 

Plan (0250) 

1 ' 

Public Comment (0260) 

' r 

iNO ru i uiei rtUUUIl 

'' 

Generic Remedy (0252) 

1 ' 

, Yes / S 

^ SCont rolsO" 

" 

Note: The numbers in parentheses on the flowchart refer to the mle numbers within OAR 340-122. 

For example, "Initial Response (0220)" means that the initial response requirements are specified in 

OAR 340-122-0220. 

UST Cleanup Manual 14 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 2.3: OUTLINE OF RULE SECTIONS 

Cleanup Rules For Leaking Petroleum UST Systems 

OAR 340-122-0205 through 340-122-0360 

Effective Date: November 2,1998 

340-122-0205 Purpose 

340-122-0210 Definitions 

340-122-0215 Scope and AppHcability 

340-122-0217 Requirements and Remediation Options 

340-122-0218 Sampling and Analysis 

340-122-0220 Initial Response 

340-122-0225 Initial Abatement Measures and Site Check 

340-122-0230 Initial Site Characterization 

340-122-0235 Free Product Removal 

340-122-0240 Investigation for Magnitude and Extent of Contamination 

340-122-0243 Low-Impact Sites 

340-122-0244 Risk-Based Concentrations 

340-122-0250 Corrective Action Plan 

340-122-0252 Generic Remedies 

340-122-0260 Public Participation 

340-122-0320 Soil Mafrix Cleanup Options 

340-122-0325 Evaluation of Matrix Cleanup Level 

340-122-0330 Evaluation Parameters 

340-122-0335 Numeric Soil Cleanup Standards 

340-122-0340 Sample Number and Location 

340-122-0345 Sample Collection Methods 

340-122-0355 Evaluationof Analytical Results 

340-122-0360 Reporting Requirements 

UST Cleanup Manual 15 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 2.4: CLEANUP RULES FOR LEAKING PETROLEUM UST SYSTEMS 

Note: Official copies of the Oregon Administrative Rules are contained in the Administrative Orders filed at the 

Archives Division, 800 Summer St. NE, Salem, Oregon 97310. The copy provided below Is for your convenience 

only. Any discrepancies with the published version are satisfied in favor of the Administrative Order. The Oregon 

Administrative Rules are copyrighted by the Oregon Secretary of State. 

340-122-0205 Purpose 

These rules establish the standards and process for the investigation, monitoring, and remedial activities necessary to 

protect public health, safety, and welfare and the environment in the event of a release or threat of a release from a 

petroleum UST system subject to ORS 466.705 tiirough 466.835, 466.994,465.200 through 465.455, and 465.900. 

Stat Auth: ORS465.400 & ORS 466.746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS466706- ORS466.835 

Hist: DEQ29-1988 f & cert, ef 11-9-88; DEQ 15-1991, f & cert ef 8-14-91; DEQ23-1998,f & cert, ef 11-2-98 

340-122-0210 Definitions 

Terms not defined in this rule have the meanings set forth in ORS 465.200 and 466.706. Additional terms are defined 

as follows unless the context requires otherwise: 

(1) "Above-Ground Release" means any release to the land surface orto surface water. This includes but is not limited 

to releases from the above-ground portion of a pefroleum UST system and releases associated with overfills and 

fransfer operations during petroleum deliveries to or dispensing from a petroleum UST system. 

(2) "Acceptable Risk Level" has the meanings set forth in OAR 340-122-0115(1) through (6). 

(3) "Ancillary Equipment" means any device, including but not limited to piping, fittings, flanges, valves, and pumps, 

used to distribute, meter, or control the flow of petroleum to and from a pefroleum UST system. 

(4) "Aquatic Sediments" means any collection of fine-, medium-, and coarse-grained minerals and organic particles 

that are found within aquatic habitats. 

(5) "Below-Ground Release" means any release to the land subsurface having concentrations detected by the 

Northwest Total Petroleum Hydrocarbon Identification Analytical Method (NWTPH-HCID, DEQ, December 1996), 

or to groundwater having concentrations detected by any appropriate analytical method specified in OAR 340-122-

0218. This includes but is not limited to releases from the below-ground portion of a petroleum UST system and 

releases to the land subsurface or groundwater associated with overfills and transfer operations as the petroleum is 

delivered to or dispensed from a petroleum UST system. 

(6) "Buildings" means any structure occupied by residents, workers, or visitors, including convenience stores for 

retailing of food. For purposes of these rules, "buildings" does not include service station kiosks under 45 square feet 

in size if the kiosk is exclusively dedicated to services for motor vehicles. 

(7) "Certified Drinking Water Protection Area" is an area that has been delineated by the Oregon Health Division in 

accordance with OAR 333-061-0057 and certified by the Department in accordance with OAR 340-040-0180. 

Note: To obtain information about certified drinking water protection areas, contact the Oregon Health Division's 

Drinking Water Program (503-731-4010). 

UST Cleanup Manual 16 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

(8) "Confirmed Release" means pefroleum contamination observed in soil or groundwater as a sheen, stain, or 

pefroleum odor, or petroleum contamination detected in soil by the Northwest Total Petroleum Hydrocarbon 

Identification Analytical Method (NWTPH-HCID, DEQ, December 1996), or detected in groundwater by any 

appropriate analytical method specified in OAR 340-122-0218. 

(9) "Contaminant of Concem" means a hazardous constituent contained in petroleum present at a concentration posing 

a potentially unacceptable risk to publichealth, safety, or welfare or the environment. 

(10) "Engineering Confrol" means a remedial method used to prevent or minimize exposure to petroleum and 

hazardous substances, including technologies that reduce the mobility or migration of petroleum and hazardous 

substances. Engineering controls may include but are not limited to capping, horizontal or vertical barriers, hydraulic 

controls, and altemative water supplies. 

(11) "Excavation Zone" means an area containing a petroleum UST system and backfill material bounded by the 

ground surface, walls, and floor ofthe pit and frenches into which the petroleum UST system is placed at the time of 

installation. 

(12) "Free Product" means non-aqueous phase liquid petroleum. 

(13) "Gasoline" means any petroleum distillate used primarily for motor fuel of which more than 50 percent of its 

components have hydrocarbon numbers of CIO or less. For purposes of OAR 340-122-0205 through 340-122-0360, 

the concenfration of gasoline in soil or groundwater is the level determined by the Northwest Total Petroleum 

Hydrocarbon Method NWTPH-Gx. 

(14) "Groundwater" means any water, except capillary moisture, beneath the land surface or beneath the bed ofany 

stream, lake, reservoir, or other body of surface water within the boundaries of the state, whatever may be the 

geological formation or structure in which such water stands, flows, percolates or otherwise moves. 

(15) "Hazardous Substance" has the meaning set forth in OAR 340-122-0115(30). 

(16) "Heating Oil" means petroleum that is No. 1, No. 2, No. 4-heavy, No. 5-light, No. 5-heavy, or No. 6 technical 

grades of fuel oil; other residual fiiel oils (including Navy Special Fuel Oil and Bunker C); or other fuels when used as 

substitutes for one of these fiiel oils. 

(17) "Heating Oil Tank" means any one or combination of underground tanks and above-ground or underground pipes 

connected to the tank, which is used to contain heating oil used for space heating a building with human habitation, or 

water heating not used for commercial processing. 

(18) "Institutional Confrol" means a remedial method such as a legal or administrative tool or action used to reduce the 

potential for exposure to petroleum and hazardous substances. Institutional confrols may include but are not limited to 

use resfrictions and site access and security measures. ^^ 

(19) "Motor Fuel" means petroleum or a petroleum-based substance that is motor gasoline, aviation gasoline. No. 1 or 

2 diesel fuel, or any grade of gasohol, typically used in the operation of a motor engine. 

(20) "Native Soil" means the soil outside ofthe immediate boundaries ofthe pit that was originally excavated for the 

purpose of installing an underground storage tank. 

(21) "Non-Gasoline Fraction" means diesel and any other petroleum distillate used for motor fiael or heating oil of 

which more than 50 percent of its components have hydrocarbon numbers of CI 1 or greater. For purposes of OAR 

UST Cleanup Manual 17 May 2009 
' Oregon Department of Environmental Quality - Underground Storage Tank Program 

340-122-0205 through 340-122-0360, the concentration of non-gasoline fraction in soil or groundwater is the level 

determined by the Northwest Total Pefroleum Hydrocarbon Method NWTPH-Dx. 

(22) "Petroleum" means gasoline, crude oil, fuel oil, diesel oil, lubricating oil, oil sludge, oil refuse, and crude oil 

flections and refined pefroleum fractions, including gasoline, kerosene, heating oils, diesel fuels, and any other 

petroleum-related product or waste or fraction thereof that is liquid at a temperature of 60 degrees Fahrenheit and a 

pressure of 14.7 pounds per square inch absolute. "Petroleum"'does not include any substance identified as a 

hazardous waste under 40 CFR Part 261. 

(23) "Petroleum UST System" has the same meaning as given in OAR 340-150-0010(55). 

(24) "Remediation" or "Remedial Measures" include "remedial action" as defined in ORS 465.200(22), "removal" as 

defined in ORS 465.200(24), and "corrective action" as defined in ORS 466.706(3). 

(25) "Remediation Level" means a concenfration of petroleum or pefroleum constituents in envfrdnmental media such 

as soil and groundwater that alone, or in combination with institutional controls or engineering controls, is determined 

to be protective of public health, safety, and welfare and the environment in accordance with these rules. 

(26) "Residential Heating Oil Tank" is a heating oil tank used primarily for single-family dwelling purposes. 

(27) "Responsible Person" includes "owner" as defined in OAR 340-150-0010(51), "permittee" as defined in OAR 

340-150-0010(52), "owner or operator" as defined in ORS 465.200( 19), and any other person liable for or voluntarily 

undertaking remediation under ORS 465.200, et seq. or ORS 466.706, et seq. 

(28) "Risk-Based Concentration" means a concentration of petroleum or petroleum constituents in environmental 

media such as soil and groundwater that is determined to be protective of public health, safety, and welfare and the 

envfronment in accordance with these rules without requiring institutional confrols or engineering controls. 

(29) "Soil" means any unconsolidated geologic materials including but not limited to clay, loam, loess, silt, sand, 

gravel, and tills or any combination of these materials. 

(30) "Surface Water" means lakes, bays, ponds, impounding reservoirs, springs, wells, rivers, sfreams, creeks, 

estuaries, wetlands, inlets, canals,'the Pacific Ocean within the territorial limits ofthe State of Oregon, and all other 

bodies, natural or artificial, inland or coastal, fresh or salt, public or private (except those private waters which do not 

combine or effect a junction with natural surface waters), which are wholly or partially within or bordering the state or 

within its jurisdiction. 

(31) "Suspected Release" means evidence of a release as described in 40 CFR § 280.50. 

(32) "Underground storage tank" or "UST" means any one or combination of tanks (including underground pipes) 

that is used to contain an accumulation of regulated substances and the volume of which (including the volume of 

connected underground pipes) is 10 percent or more beneath the surface ofthe ground. 

[Note: OAR 340-150-0500 requires owners and operators of UST systems to report suspected releases to the 

department. Owners and permittees must refer to OAR chapter 340, division 150 for complete information on 

requirements for underground storage tanks.] 

Stat Auth: ORS 465.400 & ORS 466.746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466.83 

Hist: DEQ 29-1988, f & cert, ef 11-9-88; DEQ 15-1991, f & cert ef 8-14-91; DEQ 13-1992, f 6-9-92, cert ef 10-1-92; 

DEQ 23-1998, f & cert, ef 11-2-98 

UST Cleanup Manual 18 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

340-122-0215 Scope and Applicability 

(1) OAR 340-122-0205 through 340-122-0360 of these rules apply to remediation of leaking pefroleum UST systems 

required or undertaken in accordance with ORS 465.200 et seq. or ORS 466.706, et seq. 

(2) Notwithstanding section (1) of this rule and OAR 340-122-0360(3), the Department may require that remediation 

of a release from a pefroleum UST system be govemed by OAR 340-122-0010 through 340-122-0115, if, based on the 

magnitude or complexity ofthe release or other considerations, the Department determmes that application of OAR 

340-122-0010 through 340-122-0115 is necessary to protect the public health, safety, and welfare or the environment. 

(3) Remediation of releases from UST systems containing regulated substances, as defined in ORS 466.706(16), other 

than petroleum are govemed by OAR 340-122-0010 through 340-122-0115 or as otherwise provided under applicable 

law. 

(4) Notwithstanding section (1) of this rule, remediation of releases from residential heating oil tanks are govemed by 

OAR 340-177-0001 through 340-177-0120. 

Stat A uth.: ORS 465.400 & ORS 466 746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466 835 ' 

^Hist: DEQ29-1988, f & cert, ef 11-9-88; DEQ 15-1989, f & cerl ef 7-28-89 (andcorrected8-3-89); DEQ 15-1991, f & 

cert, ef 8-14-91; DEQ 13-1992, f 6-9-92, cert, ef 10-1-92; DEQ 23-1998, f & cert, ef 11-2-98 

340-122-0217 Requirements and Remediation Options 

(1) For a release of pefroleum from an UST system, the responsible person must complete the following requirements: 

(a) Perform initial response, abatement, and site characterization in accordance with OAR 340-122-0220 through 

340-122-0230. 

(b) Remove free product to the maximum extent practicable in accordance with OAR 340-122-0235. 

(c) Where results ofthe initial site characterization indicate that the magnitude and extent of soil contamination 

have not been fully delineated, or that groundwater contamination may extend beyond the tank pit, complete 

additional site investigation in accordance with OAR 340-122-0240. 

(d) Based on site investigations, perform one ofthe following remediation approaches: 

(A) Remediation in accordance with OAR 340-122-0320 through 340-122-0360 for motor fuel and heating oil 

in soils; 

(B) Closure or remediation in accordance with OAR 340-122-0243 for low-impact sites; 

(C) Remediation pursuant to a corrective action plan developed in accordance with OAR 340-122-0244 and 

340-122-0250; 

(D) Remediation pursuant to a generic remedy developed in accordance with OAR 340-122-0252; or 

(E) Any appropriate combination of subsections (A), (C), and (D) of this rule. 

(e) Submit all reports, plans, laboratory data, and other documentation required in these mles or otherwise 

requested by the Department during the course of investigation and remedial measures. 

UST Cleanup Manual ,1 9 May 2009 
• Oregon Department of Environmental Quality - Underground Storage Tank Program 

(2) The measures described in section (1) of this mle are subject to Department review and approval as specified in 

these mles, and to public review and comment as specified in OAR 340-122-0260. 

Stat Auth.: ORS 465.400 & ORS 466:746 

Stats. Implemented: ORS 465.200 - ORS465.455 & ORS466706- ORS466.835 

Hist.: DEQ 2 3-1998, f&cert.ef 11-2-98 

340-122-0218 Sampling and Analysis 

(1) To sfreamline the investigation of petroleum UST release-sites, a responsible person may use expedited site 

assessment methods (e.g., push probe samplers) for sample collection and analysis as long as all methods and results 

are documented in subsequent reports to the Department. However, samples used to demonstrate compliance with 

remediation levels must be collected and analyzed in accordance with this section. 

(a) Sample collection, preservation, storage, and handling methods must conform with appropriate procedures in 

"Test Methods for Evaluating Solid Waste," SW-846, 3rd Edition, Final Updates I, II, IL\, IIB and III, Revised 

May 1997 (U.S. EPA). 

(b) Samples must be tested for all reasonably-likely contaminants of concem relevant to the petroleum released, 

the age of the release, and the medium contaminated taking into accoimt appropriate remediation levels. The 

following must be considered and, where appropriate, sampled: 

(A) Total Petroleum Hydrocarbons (TPH) in the gasoline range and TPH in the diesel/lube oil range, as 

appropriate; 

(B) For gasoline releases, benzene, toluene, ethylbenzene and total xylenes (BTEX); naphthalene, lead, 

ethylene dibromide (EDB), ethylene dichloride (EDC), and methyl t-butyl ether (MTBE); 

(C) For diesel or heating oil releases, BTEX and polynuclear aromatic hydrocarbons (PAHs); and 

(D) For waste oil releases, BTEX, PAHs, volatile chlorinated hydrocarbons, and leachable concentrations of 

cadmium, chromium, and lead. 

(c) Groundwater samples collected for the purpose of testing for lead must be filtered immediately upon collection 

using a 0.45 micron filter and analyzed for dissolved lead. 

(d) The following analytical methods must be employed. 

(A) Total Petroleum Hydrocarbons must be analyzed by the Northwest Total Pefroleum Hydrocarbon 

Methods (DEQ, December 1996) including, as appropriate: 

(i) Hydrocarbon Identification by NWTPH-HCID; 

(ii) Gasoline Range Hydrocarbons by Method NWTPH-Gx; and 

(iii) Diesel/Lube Oil Range Hydrocarbons by Method NWTPH-Dx. 

-- . (B) Leachable concenfrations of cadmium, chromium, and lead must be analyzed by EPA Method 1311 

(Toxicity Characteristic Leaching Procedure). . 

UST Cleanup Manual 20 > May 2009 
^ Oregon Department of Environmental Quality - Underground Storage Tank Program 

(C) All other contaminants of concem must be analyzed by appropriate procedures described in "Test 

Methods for Evaluating Solid Waste," SW-846, 3rd Edition, Final Updates I, II, IIA, IIB and III, Revised 

May 1997 (U.S. EPA). 

(e) The Department may accept altemative sampling and analytical methods that have been shown to be 

appropriate for the contaminants of concem and the media of interest, and that have acceptable quality control 

measures, and limits of detection. 

(2) The Department may request additional tests if site-specific conditions warrant additional information. 

Stat Auth.: ORS465.400 & ORS466746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466.835 

Hist.:DEQ23-1998,f & cert, ef 11-2-98 

340-122-0220 Initial Response 

For a suspected or confirmed release from a pefroleum UST system, the responsible person must perform the 

following initial response actions within 24 hours: 

(1) Report the following releases to the Department: 

(a) AU below-ground releases; 

(b) All above-ground releases to the land surface in excess of 25 gallons, or releases of less than 25 gallons if the 

responsible person is unable to contain or clean up the release within 24 hours; and 

(c) All above-ground releases to surface water that result in a sheen on the water. 

(2) Take immediate action to prevent any further release ofthe petroleum into the envfronment. 

(3) Identify and mitigate fire, explosion, and vapor hazards. 

Stat Auth.: ORS 465.400 & ORS 466 746 j 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466 835 

Hist.: DEQ 29-1988, f & cert, ef 11-9-88; DEQ 15-1991, f & cert, ef 8-14-91; DEQ 23-1998, f & cert, ef 11-2-98 

340-122-0225 Initial Abatement Measures and Site Check 

(1) Unless directed to do otherwise by the Department, a responsible person must perform the following abatement 

measures: 

(a) Remove as much of the petroleum from the UST system as is necessary to prevent further release to the 

environment; 

(b) Visually inspect any above-ground releases or exposed below-ground releases and prevent further migration of 

the released pefroleum into surrounding soils and groundwater; 

(c) Monitor and mitigate any fire and safety hazards posed by vapors or free product that have migrated from the 

UST excavation zone and entered into subsurface stmctures; 

(d) Remediate hazards posed by contaminated soils that are excavated or exposed during confirmation, site 

investigation, abatement, or remedial activities. For remedial measures including freatment or disposal of soils, the 

responsible person must comply with applicable state and local requirements; 

USTCIeanup Manual 21 May 2009 
^ Oregon Department of Environmental Quality - Underground Storage Tank Program 

(e) Measure for the presence of a release where contamination is most likely to be present at the UST site. In 

selecting sample types, sample locations, and measurement methods, the responsible person must consider the 

nature of the stored petroleum, type of backfill, depth to groundwater, and other factors as appropriate for 

identifying the presence and source ofthe release; and 

(f) Investigate to determine the possible presence of free product, and begin free product removal as soon as 

practicable in accordance with OAR 3 40-122-023 5. 

(2) Contaminated soil shall be managed in accordance with solid waste regulations. 

(3) Within 20 days after release confirmation, or within a longer period of time approved by the Department, the 

responsible person shall submit a report to the Department summarizing the steps taken under OAR 340-122-0220 and 

340-122-0225 and any resulting information or data. 

Stat Auth: ORS 465.400 & ORS 466 746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS466.835 

Hist: DEQ 29-1988, f &cert. ef 11-9-88; DEQ 13-1992, f 6-9-92, cert ef 10-1-92; DEQ23-1998, f & cert ef 11-2-98 

340-122-0230 Initial Site Characterization 

(1) Unless directed to do otherwise by the Department, a responsible person must collect information about the site 

and the nature of the release, including information obtained while confirming the release or completing initial 

abatement measures under OAR 340-122-0225(1). This information must include the following, as appropriate: 

(a) Data on the nature and estimated quantity ofthe release; 

(b) Data from available sources and/or site investigations regarding use and approximate locations of wells 

potentially affected by the release, presence of a certified drinking water protection area, distance to the nearest 

surface water, subsurface soil conditions, locations of subsurface sewers, water lines, and other utilities, and land 

use for all adjacent properties and all properties potentially affected by the release; 

(c) Results ofthe measurements required under OAR 340-122-0225(1 )(e); 

(d) Results ofthe free product investigations required under OAR 340-122-0225(l)(f), to be used by the 

responsible person to determine whether free product must be recovered; 

(e) A site map, drawn to scale, showing the location of buildings, current and former locations of UST systems, 

utility lines, sample locations, and other relevant site information; and 

(f) Other information necessary to characterize the site. 

(2) Within 45 days of release confirmation, or within a longer period of time approved by the Department, a 

responsible person must submit the information collected under section (1) of this rale and required under OAR 340-

122-0235(5) to the Department. 

Stal Auth.: ORS 465.400 & ORS 466.746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466.835 

Hist: DEQ29-1988 f & cert, ef 11-9^-88; DEQ 13-1992, f 6-9-92, cert, ef 10-1-92;.DEQ23-1998, f & cert, ef 11-2-98 

340-122-0235 Free Product Removal 

At sites where investigations under OAR 340-122-0225( 1 )(f) indicate the presence of free product, the responsible 

person must remove the free product to the maximum extent practicable while continuing, as necessary, any actions 

• • . / • ' 

UST Cleanup Manual 22 May 2009 
. Oregon Department of Environmental Quality - Underground Storage Tank Program 

initiated under OAR 340-122-0220 through 340-122-0230, or while preparing for actions required under OAR 340-

122-0240 through 340-122-0250. In meeting the requirements of this mle, the responsible person must: 

(1) Initiate free product removal as soon as practicable. 

(2) Conduct free product removal in a manner that minimizes the spread of contamination into previouslyuncontaminated zones by using recovery and disposal techniques appropriate to the hydrogeologic conditions at the 

site, and that properly treats, discharges, or disposes of recovery byproducts in compliance with applicable local, state, 

and federal regulations. 

(3) Use abatement of free product migration as a minimum objective for the design ofthe free product removal 

system. 

(4) Handle any flammable products in a safe manner to prevent fires or explosions. 

(5) Include in the report submitted under OAR 340-122-0230(2) a summary of free product removal activities, 

describing: 

(a) The name ofthe confractor or responsible person performing the free product removal measures; 

(b) The estimated quantity, type, and thickness of free product observed or measured in wells, boreholes, and 

excavations; 

(c) The type of free product recovery system used; 

(d) The location of any on-site or off-site wastewater discharge associated with the recovery operation; 

(e) The type of freatment applied to, and the effluent quality from, any wastewater discharge; 

(f) The steps that have been or are being taken to obtain necessary permits for any wastewater discharge; and 

(g) The disposition of recovered free product; and 

(h) Other information relevant to the recovery of free product at the site. 

Stat Auth: ORS 465.400 & ORS 466 746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466.706 - ORS 466.835 

Hist.: DEQ29-1988,f &'cert. ef 11-9-88; DEQ 13-1992. f 6-9-92, cert, ef 10-1-92; DEQ23-1998, f & cert, ef 11-2-98 

340-122-0240 Investigation for Magnitude and Extent of Contamination 

(1) If data collected during the initial site characterization do not identify the full nature, magnitude, and extent of soil 

and groundwater contamination, the responsible person must conduct an investigation for this purpose. 

(a) The areal and vertical extent of soil contamination must be determined. 

(b) The areal extent of groundwater contamination must be determined, including an estimate of groundwater 

velocity and flow direction. 

(c) Representative samples of all affected media must be analyzed for reasonably-likely contaminants of concem 

based on the nature ofthe release and applicable remedial options under OAR 340-122-0217. 

UST Cleanup Manual 23 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

(d) Expedited site assessment tools (e.g., push-probe samplers) may be used to provide a preliminary measure of 

the magnitude and extent of groundwater contamination. 

(e) If groundwater contamination appears to have migrated beyond the immediate vicinity of the tank pit, 

additional groundwater investigation must be performed in accordance with section (2) of this mle unless the 

responsible person can demonstrate to the Department that the contamination presents no potential threat to 

human health or the environment. 

(2) Groundwater investigations required by section (1) of this rule, and groundwater monitoring under corrective 

action plans required'by OAR 340-122-0250 must be carried out as follows: 

(a) Groundwater monitoring systems must include a minimum of one hydraulically-upgradient and two 

hydraulically-downgradient groundwater monitoring wells, capable of adequately characterizing both site 

hydrogeology and the vertical and horizontal magnitude and extent of groundwater contamination. Additional 

monitoring wells may be requfred by the Department if necessary to adequately characterize the site or to establish 

compliance monitoring points. All monitoring wells must be designed, completed and, when appropriate, removed 

according to the Water Resources Department's administrative mles, OAR 690-240-0005 through 690-240-0180 

(Constraction and Maintenance of Monitoring WeUs and Other Holes in Oregon). 

(b) When the installation of monitoring wells is impractical due to specific site conditions, the responsible person 

must notify the Department and develop an altemative course of action which must be approved by the 

Department. 

(c) Groundwater sampling events must meet the following minimum requirements: 

(A) Initially, samples must be collected at quarterly intervals. After four consecutive quarters of groundwater 

monitoring, if site conditions warrant more or less frequent sampling, an altemative sampling schedule may 

be proposed; 

(B) Water elevation measurements must be made in all monitoring wells during each sampling event, unless 

the Department has approved measurements from a reduced number of wells that provide sufficient data for 

the determination ofthe groundwater flow direction; 

(C) Formal chain-of-custody records must be prepared and maintained for each sample; and 

(D) All sampling events for purposes of identifying contaminants of concem, or for verifying either 

preliminary compliance or final compliance, must include adequate quality assurance and qualify control 

(QA/QC) measures. 

(3) The responsible person shall submit the information collected under sections (1) and (2) of this rale to the 

Department within 45 days of completing field work, or within a longer period of time approved by the Department. 

Groundwater monitoring reports must be submitted after each monitoring event unless an altemative schedule has 

been approved by the Department, and must contain the following information: 

(a) A site map, drawn to scale, showing the location of all monitoring wells and the dfrection of groundwater 

flow; 

(b) A summary of all sampling, haindling, and chain-of-custody procedures followed, including, as appropriate, a 

discussion ofany routine maintenance procedures performed during the quarter and any problems encountered 

(e.g., failure of a pump, clogging of a well screen, an unexplained change in the qualify ofthe water, or any other 

, unusual event) and what actions were taken, or will be taken, in response to such occurrences; 

UST Cleanup Manual 24 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program " 

(c) A summary ofthe analytical data, including QA/QC results for the sampling event; 

(d) Water elevation measurements from each monitoring well, unless the Department approves elevation 

measurements from a reduced number of wells; and 

(e) A written evaluation of data, describing trends or other pertinent information derived from the sampling event, 

and specifying the method or methods of statistical analysis used to describe the significance of these trends. 

Stat Auth: ORS 465.400 & ORS 466 746 ' 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466706 - ORS466.835 

Hist: DEQ 29-1988, f & cert, ef 11-9-88; DEQ 13-1992, f 6-9-92, cert, ef 10-1-92; DEQ 23-1998, f & cert, ef 11-2-98 

340-122-0243 Low-Impact Sites 

Upon completion of all applicable requirements of OAR 340-122-0205 through 340-122-0240, a responsible person 

may propose closure of a facilify as a low-impact site if information gathered during site investigations clearly 

demonstrates that site conditions have stabilized (i.e., significant future migration of contamination is unlikely) and 

that the site is likely to have low current and potential fiiture impact on the basis of risk or impairment of beneficial 

land and water uses. The purpose ofthe low-impact site designation is to provide a sfreamlined process for operating 

gas stations or other industrial or commercial properties that allows these facilities to remain in operation while the 

responsible person manages any potential risk from contamination remaining at the site. If the Department develops a 

generic remedy for low-impact sites in accordance with OAR 340-122-0252, then the low-impact site requirements 

specified in this mle (OAR 340-122-0243) will no longer be in effect. Until such time as a low-impact site generic 

remedy is in effect, the steps for low-impact closure are described below. 

(1) The site must meet each of the following conditions: 

(a) The source ofthe release has been repaired or removed, and all tanks, lines, and associated equipment at the 

site have been upgraded to meet applicable technical and regulatory standards. 

(b) The facilify must continue to be used as a gas station or other industrial or commercial use precluding potential 

routine exposure to children. ^ 

(c) Other than minimal amounts of pefroleum product in the tank pit at the time of tank removal, no measurable 

free product was found on the groundwater. 

(d) Concenfrations of gasoline in the contaminated soil should not exceed 1000 ppm TPH, and concentrations of 

diesel and other non-gasoline fraction hydrocarbon in the contaminated soil should not exceed 10,000 ppm TPH. 

(e) Contaminated soil remaining at the site should not be located within 3 feet ofthe land surface, unless: 

(A) Contaminant concentrations do not exceed generic risk-based concentrations for direct contact developed 

in accordance with OAR 340-122-0252; or 

(B) Department-approved institutional or engineering controls have been implemented and will be maintained 

to prevent direct contact with soils. 

(f) Contamination is not located in utilify corridors, unless: 

(A) The contamination is shown to haye been stabilized and is unlikely to resuh in vapor or groundwater 

problems; 

UST Cleanup Manual 25 May 2009 
^ Oregon Department of Environmental Quality - Underground Storage Tank Program __=__ _ 

(B) Contaminant concentrations do not exceed generic risk-based concentrations for a french worker scenario 

developed in accordance with OAR 340-122-0252; and 

(C) The corresponding utilify has been notified of the contamination. 

(g) Service station and other nonresidential buildings must not be located over or within 10 lateral feet and 

residences must not be located over or within 50 lateral feet of contaminated soil, unless: 

(A) Contaminant concenfrations do not exceed generic risk-based concentrations for volatilization from soils 

into buildings developed in accordance with OAR 340-122-0252; or 

(B) It is demonsfrated that potential exposure from volatilization into buildings from this contamination does 

not exceed acceptable risk levels; or 

(C) Department-approved actions have been taken to mitigate potential vapor problems, 

(h) If groundwater contamination is found at the site: 

(A) There are no water supply wells located within one-quarter mile ofthe source of contamination; 

(B) The groundwater plume is less than 250 feet in length as measured from the center ofthe source; 

(C) Monitoring data are available to demonsfrate that the groundwater plume has stabilized, or is diminishing 

in size; 

(D) The groundwater plume does not leave the source property at concentrations exceeding generic risk-based 

concentrations developed in accordance with OAR 340-122-0252, unless owners of other affected properties 

consent to institutional or engineering controls necessary to prevent exposure due to the contaminated 

groundwater; and 

(E) Service station and other nonresidential buildings must not be located over or within 10 lateral feet and 

residences must not be located over or within 50 lateral feet of contaminated groundwater, unless: 

(i) Contaminant concenfrations within the plume do not exceed generic risk-based concentrations for 

volatilization from groundwater into buildings developed in accordance with OAR 340-122-0252; or 

(ii) It is demonsfrated that potential exposure from volatilization into buildings from this contamination 

does not exceed acceptable risk levels; or 

(iii) Department-approved actions have been taken to mitigate potential vapor problems. 

(2) The responsible person must implement institutional or engineering controls, in a form acceptable to the 

Department, necessary to ensure that a site's designation as a low-impact site remains unchanged. 

(3) The responsible person must submit a low-impact-site-closure report to the Department that includes the following: 

(a) A site summary with appropriate scaled maps, a discussion of current and reasonably likely future land uses 

for the site and adjacent properties, including information from local govemment comprehensive planning plans 

and zoning ordinances, and information on geology, hydrogeology, topography, and other relevant factors on 

which the low-impact closure is based. 

USTCIeanup Manual 26 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program ^ ^ 

(b) Information about the release, including a history of all actions taken, data from all samples collected at the 

site, and a description of all contamination, including scaled maps showing the locations of contamination that 

was treated or removed from the site and contamination remaining at the site at the time ofthe report. 

(c) Sufficient discussion and supporting data to address each ofthe specific low-impact site requirements listed in 

section (1) of this rale. 

(d) If groundwater contamination is present at concentrations exceeding generic risk-based concentrations, a 

discussion of current and reasonably likely future water uses. 

(e) If groundwater contamination is present at concentrations exceeding generic risk-based concenfrations and the 

site is located within a certified drinking water protection area (DWPA), a description ofthe DWPA and what 

additional information has been gathered and measures taken to ensure that there are no current or potential future 

adverse impacts to the groundwater in the aquifer within the DWPA. 

(f) A proposal, subject to Department approval, for any institutional or engineering controls necessary to maintain 

low-impact site conditions. 

(4) Upon review ofthe low-impact site closure report, the Department may: 

(a) Approve the report and, upon receipt of adequate documentation showing that any necessary institutional or 

engineering controls have been implemented and will be maintained, issue ,a low-impact site closure letter 

stipulating the site conditions that must be maintained; 

(b) Request that additional information be submitted or work be performed in support ofthe proposed low-impact 

closure; or 

(c) Determine that the site does not meet the conditions for low-impact closure and require that additional actions 

be taken under other relevant sections ofOAR 340-122-0205 through 340-122-0360. ' 

(5) The Department shall require public notice consistent with applicable requfrements of OAR 340-122-0260 for sites 

proposed for low-impact closure. 

(6) The owner ofany property requiring controls under this mle must notify the Department ofany future changes that 

might affect the facilify's designation as a low-impact site. 

Stat. Auth: ORS 465.400 & ORS 466 746 

Stats. Implemented ORS 465.200 - ORS 465.455 & ORS 466.706 - ORS 466 835 

Hist: DEQ 23-1998, f & cert ef 11-2-98 

340-122-0244 Risk-Based Concentrations 

This mle describes the requirements for developing risk-based concentrations for use in establishing remediation 

levels in corrective action plans under OAR 340-122-0250. 

(1) A conceptual model must be developed for the site describing how exposure to contaminants, is reasonably likely 

to occur. 

(a) The conceptual site model must be based on, at a minimum: 

(A) The magnitude and areal and vertical extent of soil and groundwater contamination; 

UST Cleanup Manual. 27 May 2009 
• , • Oregon Department of Environmental Quality - Underground Storage Tank Program , 

(B) The concentration of applicable contaminants of concern in each contaminated medium; 

(C) The likelihood for exposure to occur, given the concentration, location, and mobilify ofthe contaminants 

in conjunction with factors such as local climate, geology, and hydrogeology; and 

(D) Information on current and reasonably likely fiiture land and water uses in the area of potential impact. 

(b) Subject to site-specific conditions, the follovving exposure pathways must be considered in the conceptual site 

model: 

(A) Direct contact with contaminated soils resulting in exposure due to a combination of dermal contact, soil 

ingestion, vapor inhalation, and particulate inhalation; 

(B) Leaching from soils to underlying groundwater with subsequent groundwater ingestion; 

(C) Volatilization from soils to outdoor air and subsequent inhalation; 

(D) Volatilization from soils to indoor air and subsequent inhalation; 

(E) Ingestion or other exposure to contaminated groundwater; 

(F) Volatilization from groundwater to outdoor air and subsequent inhalation; and 

(G) Volatilization from groimdwater to indoor air and subsequent inhalation. 

(c) Subject to site-specific conditions, the following exposure scenarios must be considered in the conceptual site 

model: 

(A) Exposure to adults and children as fypified by single-family residential living conditions; 

(B) Exposure to adults as fypified by industrial or commercial working conditions; and 

(C) Exposure to adults whose occupation requires increased direct contact with soil as fypified by a trench 

worker. 

(d) Depending on conditions found at the site, the Department may require the evaluation of additional exposure 

pathways and scenarios. ' 

(2) Risk-based concenfrations must be developed for contaminants of concem identified during the site 

characterization or other site investigation activities, including total petroleum hydrocarbons (TPH) when appropriate, 

for exposure pathways and scenarios identified in the conceptual site model. 

(a) The Department shall develop and maintain, in accordance with OAR 340-122-0252, a table of generic riskbased concenfrations that may be used for this purpose; or 

(b) A responsible person may calculate site-specific risk-based concentrations by employing contaminant fate, 

fransport, and exposure models. 

(A) Sources of models and default exposure parameters include: 

(i) Applicable Department of Environmental Qualify generic remedy guidance documents developed 

pursuant to OAR 340-122-0252; 

UST Cleanup Manual 28 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

(ii) ASTM Standard Guide for Risk-Based Corrective Action Applied at Petroleum Release Sites (ASTM 

E 1739-95); and 

(iii) US EPA Risk Assessment Guidance for Superfund. 

(B) The Department may approve the use of other models if they are deemed appropriate for the proposed 

task. 

(C) A responsible person may propose, subject to the Department's approval, the use of site-specific exposure 

parameters in place of default exposure parameters. 

(3) Risk-based concentrations for protection ofthe environment must be developed if contaminatiorfposes a potential 

risk exceeding the acceptable risk levels for ecological receptors. Unless the Department determines that screening is 

required for threatened and endangered species, screening for potential ecological impact is not required if: 

(a) Contaminated soils are only present at a depth greater than 3 feet below ground surface, or, if present at a 

shallower depth, such soils cover an area no greater than 0.125 acre; 

(b) Surface water has not been affected by the release; 

(c) Contaminated groundwater does not and is not reasonably likely to discharge to surface waters or otherwise 

reach the surface in a manner that might result in contact with ecological receptors; and 

(d) Contaminated groundwater does not and is not reasonably likely to come into contact with aquatic sediments. 

Stat Auth.: ORS 465.400 & ORS 466 746 

Stats. Implemented: ORS 465.200-ORS 465.455 & ORS 466706-ORS 466835 

Hist: DEQ 23-1998, f & cert, ef 11-2-98 

340-122-0250 Corrective Action Plan 

(1) Subject to section (12) of this mle, a responsible person proposing to remediate a site to risk-based remediation 

levels must submit a corrective action plan for responding to contaminated soil and groundwater. 

(2) A remediation level must be proposed for each contaminant of concem in soil and groundwater based on: 

(a) Site-specific risk-based concentrations calculated according to OAR 340-122-0244, or generic risk-based 

concentrations developed under OAR 340-122-0252; 

(b) Current or future reasonably likely significant adverse effects to beneficial uses of groundwater or surface 

water not addressed by risk-based concentrations under subsection (a) of this section; and 

(c) Proposed institutional and engineering controls, ifany. 

(3) The corrective action plan must be submitted to the Department within 45 days of completing field work necessary 

for its development, or within a longer period of time approved by the Department, and must contain sufficient 

information to support the proposed remedial measures including, at a minimum: 

(a) The site history and a summary of all previous actions taken in response to the release; 

(b) A summary and analysis of all sampling data, including site maps, drawn to scale, showing the magnitude and 

extent of contamination; 

UST Cleanup Manual 29 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

(c) The conceptual site model and an explanation for each remediation level proposed under section (2) of this 

rale; 

(d) Land and water use information necessary to support the conceptual site model, including current uses, and 

comprehensive plan and zoning designations for adjacent properties, and all properties potentially affected by the 

release; and 

(e) A discussion of all remedial measures including institutional and engineering controls, addressing any 

contamination exceeding acceptable risk levels and non-risk impacts. 

(4) A corrective action plan which contains a proposal for groundwater monitoring or remediation must include: 

(a) A recommendation for which monitoring well or wells will serve as compliance points for the site based on the 

following minimum requirements: 

(A) Compliance monitoring points must define an area surrounding the source of contamination, outside of 

which remediation levels must be attained and maintained. 

(B) The compliance monitoring points shall establish a vertical boundary extending from the uppermost level 

ofthe saturated zone to the lowest depth which could potentially be affected by the release; 

(C) Compliance monitoring points must be located close enough to the source of contamination so that they 

reasonably detect contamination, if present; and 

(D) Compliance monitoring points may not be located beyond the source property boundary except as 

approved by the Department. 

(b) At least one monitoring point which measures contaminant concentrations in the source area. 

(c) A discussion of all actions being proposed to monitor or remediate the groundwater contamination. These 

actions might not requfre sampling from all wells or monitoring for all contaminants detected during the 

investigation, provided: 

(A) Hydrogeological and contamination data, as well as compliance point requirements, support the wells 

proposed for monitoring; 

(B) Appropriate indicator compounds are analyzed at regular intervals during remediation and monitoring; 

(C) Analytical parameters are consistent with remediation levels; and 

(D) All contaminants of concem detected during the investigation are sampled and analyzed to confirm 

preliminary and final compliance. 

(5) The Department shall approve the corrective action plan only after ensuring that implementation ofthe plan, 

including any applicable remediation levels, will adequately protect human health, safefy, and welfare and the 

environment, and after providing any public notice consistent with the requirements of OAR 340-122-0260. 

• " - ^ _ 

(6) Upon approval ofthe corrective action plan by the Department, a responsible person must implement the plan, 

including any modifications to the plan made by the Department. The responsible person must monitor, evaluate, and 

report the results of implementing the plan in accordance with a schedule and in a format established by the 

Department. ' 

UST Cleanup Manual 30 ,. May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

(7) For remediation of groundwater contamination: 

(a) Preliminary compliance is attained when the first sampling event following the installation of all required 

monitoring wells shows that all samples collected from all compliance monitoring points and out to the edge of 

the contaminant plume meet the remediation levels for all contaminants of concem. When preliminary compliance 

has been attained, the responsible person may suspend groundwater tteatment system operation at any time. The 

Department may require that a suspended groundwater freatment system be reactivated ifany ofthe water samples 

collected at or beyond the compliance monitoring points during the required period of monitoring are found to 

contain any contaminant concentrations in excess of remediation levels. If the treatment system is reactivated, 

tteatment must be continued until preliminary compliance is again attained. 

(b) Final compliance is attained when: 

(A) A minimum of four consecutive quarterly groundwater monitoring events has been completed following 

shutdown ofthe treatment system, and all samples collected from all compliance monitoring points and out to 

Jhe edge ofthe contaminant plume meet the remediation levels for all contaminants of concem. The four 

consecutive sampling events may include the sampling event at which preliminary compliance is achieved, 

provided that all contaminants of concem are included in the sampling and analysis; 

(B) Site-specific hydrogeologic and contaminant level data are presented in a written report to the Department 

demonsfrating that any remaining contaminants will not migrate beyond the compliance monitoring points at 

levels exceeding remediation levels; and 

(C) A final report containing a summary of all groundwater data collected at the site, an anafysis ofthe data 

demonstrating that the final compliance requfrements have been met, and any other relevant information 

deemed necessary by the Department to demonstrate that all ofthe requirements of this mle have been met is 

submitted to and approved by the Department. 

(c) Notwithstanding final compliance, the Department may require continued monitoring of groundwater in 

situations where site-specific conditions warrant such measures. 

(8) The responsible person must submit additional information or develop and submit a modified correction action 

plan at the Department's request if the Department determines that remedial activities must be modified or that 

treatment system performance (e.g., rate of cleanup) is not achieving results as projected in the approved corrective 

action plan. 

(9) When all requirements of an approved corrective action plan have been met to the Department's satisfaction, the 

Department shall issue a no further action letter to the responsible person. 

(10) In the event that contamination exceeding risk-based concenfrations remains, the Department may require the 

implementation of institutional or engineering confrols necessary to ensure protection of public health, safefy, and 

welfare and the environment. 

(11) A responsible person may, in the interest of minimizing environmental contamination and promoting more 

effective remediation, begin remediation of soil and groundwater before the corrective action plan is approved 

provided that the responsible persori: 

(a) Notifies the Department of its intention to begin remediation; 

(b) Complies with any conditions imposed by the Department including halting remediation or mitigating adverse 

consequences from remedial activities; and 

UST Cleanup Manual 31 May 2009 
Oregon Department of Erivironmental Quality - Underground Storage Tank Program ^ 

\ \ 

(c) Incorporates the self-initiated remedial measures in the corrective action plan that is submitted to the 

Department for approval. 

(12) The requirement that a corrective action plan be used does not apply to low-impact site closures, or to generic 

remedies unless specified by the Department in generic remedy guidance. However, the Department may require that a 

corrective action plan be developed and implemented for sites being considered for remediation under the soil mafrix 

cleanup options (OAR 340-122-0320), as low-impact sites (OAR 340-122-0243), or under generic remedies (OAR 

340-122-0252) if, upon review of available information, the Department determines that conditions at the site are not 

appropriate for the initial proposed remedial option or the proposal does not provide adequate protection to human 

health, safefy, and welfare and the environment. 

Stat. Auth: ORS 465.400 & ORS 466 746 

Stats. Implemented: ORS 465.200- ORS 465.455 & ORS 466 706 - ORS 466 835 

Hist: DEQ 29-1988, f & cert, ef 11-9-88; DEQ 15-1989, f & cert, ef 7-28-89 (andcorrected8-3-89); DEQ 13-1992, f 6-9-

.92, cert, ef 10-1-92; DEQ 23-1998, f&cert.-^ef 11-2-98 

340-122-0252 Generic Remedies 

(1) The Department may identify or develop generic remedies for releases from petroleum UST systems. 

(a) For purposes of this rale, a generic remedy may include: 

(A) Generic risk-based concentrations for use in closure of low-impact sites, or remediation under a corrective 

action plan; and , 

(B) Remedial technologies or methods for use at eligible sites on a sfreamlined basis. 

(b) A generic remedy must describe criteria making sites eligible for use ofthe generic remedy. 

. (c) Any generic remedy that allows for implementation of specified remedial measures (e.g., tteatment 

technologies, excavation and off-site disposal, engineering confrols, institutional confrols) must be based on a 

generic feasibilify study evaluating a range of potential remedial measures providing protection of human health 

and the environment and protection or restoration of beneficial uses of waters. 

(d) Any generic remedy that includes risk-based concenfrations must be based on a generic risk assessment 

documenting the Department's conclusions with respect to how sites eligible for use ofthe generic remedy will 

achieve acceptable risk levels. 

(2) In developing generic remedy guidance, the Department will provide opportunities for public participation 

regarding the scope and content ofthe guidance. 

(3) The Department may approve use of a generic remedy at a site if site-specific information demonsfrates that the 

proposed generic remedy or the completed generic remedy as implemented at the site is consistent with Department 

generic remedy guidance. 

Stat Auth: ORS 465.400 & ORS 466 746 

Stats. Implemented ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466.835 

Hist: DEQ 23-1998. f & cert ef 11-2-98_ 

340-122-0260 Public Participation 

(1) The Department shall maintain a list of all confirmed releases and ensure that site release and cleanup infonnation 

are made available to the public for inspection upon request. 

UST Cleanup Manual 32 ^ May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

(2) For each confirmed release that requires a corrective action plan under OAR 340-122-0250, or that requires 

implementation of engineering or institutional controls for designation as a low-impact site under OAR 340-122-0243 

or as part of a generic, remedy under OAR 340-122-0252, the Department shall provide notice to affected property 

owners and the public. This notice may include but is not limited to public notice in local newspapers, block 

advertisements, public service announcements, publication in a state register, letters to individual households, or 

personal contacts by field staff. 

(3) For each confirmed release, the Department, upon written request by ten or more persons or by a group having ten 

or more members, shall conduct a public meeting at or near the facilify for the purpose of receiving verbal comment 

regarding proposed remedial activities, except for those activities conducted under OAR 340-122-0320 through 340-

122-0360. 

(4) The Department shall ensure that site release information and decisions conceming completed and proposed 

pefroleum UST remedial measures are made available to the public for inspection upon request. 

(5) Before approving a corrective action plan, the Department may hold a public meeting to consider comments on the 

proposed corrective action plan if there is sufficient public interest, or for any other good reason. 

Stat Auth: ORS465.400 & ORS466.746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466.835 

Hist: DEQ29-1988, f & cert, ef 11-9-88; DEQ 15-1989, f & cert ef 7-28-89 (andcorrected8-3-89); DEQ23-1998,f & 

cert ef 11-2-98 

340-122-0320 Soil Matrix Cleanup Options 

A responsible person may elect to clean up petroleum contaminated soils according to the procedures and standards 

set forth in OAR 340-122-0320 through 340-122-0360. For purposes of the soil matrix cleanup mles, "cleanup" means 

excavation and offsite disposal, or freatment, of contaminated soils. When using the numeric soil cleanup standards 

specified in these rales, the responsible person has the option of: 

(1) Cleaning up the site as specified in these mles to the numeric soil cleanup standard defined as Level 1 in OAR 

340-122-0335(2); or 

(2) Evaluating the site as specified in OAR 340-122-0325 to determine the required Matrix cleanup level, and then 

cleaning up the site as specified in these mles to the numeric soil cleanup standard defined by that Matrix cleanup 

level. ' • 

Stat Auth: ORS465.400 & ORS466746 

Stats. Implemented: ORS465.200 - ORS465.455 & ORS466706- ORS466.835 

Hist: DEQ 15-1989. f & cert, ef 7-28-89 (andcorrected8-3-89); DEQ23-I998f & cert, ef 11-2-98 

340-122-0325 Evaluation of Matrix Cleanup Level 

(1) In order to determine a specific Matrix cleanup level, the site must first be evaluated by: -

(a) Assigning a numerical score to each of the five site-specific parameters in OAR 340-122-0330(1) - (5); and 

(b) Totaling the parameter scores to arrive at the Matrix Score. 

(2) The Matrix Score must then be used to select the appropriate numeric soil cleanup standard as specified in OAR 

340-122-0335. 

UST Cleanup Manual ,3 3 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

Stat Auth: ORS465.400 & ORS 466.746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466.835 

Hist: DEQ 15-1989. f & cert, ef 7-28-89 (and corrected 8-3-89); DEQ 23-1998, f & cert, ef 11-2-98 

340-122-0330 Evaluation Parameters 

The site-specific parameters are to be scored as specified in this.section. Ifany ofthe parameters in sections (1) - (5) of 

this mle is unknown, that parameter must be given a score often: 

(1) Depth to Groundwater: This is the vertical distance (rounded to the nearest foot) from the surface ofthe ground to 

the highest seasonal elevation ofthe saturated zone. The score for this parameter is: 

(a) > 100 feet, 1; \ 

(b) 51-100 feet, 4; 

(c) 25 - 50 feet, 7; 

(d)<25feet, 10. 

(2) Mean Annual Precipitation: This measurement may be obtained from the nearest appropriate weather station. The 

score for this parameter is: 

(a) < 20 inches, 1; • 

(b) 20 - 45 inches, 4; 

(c)> 45 inches, 10. 

(3) Native Soil or Rock Type: The score for this parameter is: 

(a) Low permeabilify materials such as clays, silfy clays, compact tills, shales, and unfractured metamorphic and 

igneous rocks, 1; 

(b) Moderate permeabilify materials such as fine and silfy sands, sandy loams, loamy sands, and clay loams; 

moderately permeable limestones, dolomites and sandstones; and moderately fractured igneous and metamorphic 

rocks, 5; 

(c) High permeabilify materials such as sands and gravels, highly fractured igneous and metamorphic rocks, 

permeable basalts and lavas, and karst limestones and dolomites, 10. 

(4) Sensitivify ofthe Uppermost Aquifer: Due to the imcertainties involved in the Matrix evaluation process, this 

factor is included to add an extra margin of safefy in situations where critical aquifers have the potential to be affected. 

The score for this parameter is: i 

(a) Unusable aquifer, either due to water qualify conditions such as salinify, etc.; or due to hydrologic conditions 

such as exfremely low yield, 1; 

(b) Potable aquifer not currently used for drinking water, but the qualify is such that it could be used for drinking 

water, 4; 

(c) Potable aquifer currently used for drinking water; altemate unthreatened sources of water readily available, 7; 

UST Cleanup Manual 34 May 2009 
-. Oregon Department of Environmental Quality - Underground Storage Tank Program ^^_ _ 

(d) Sole source aquifer currently used for drinking water; there are no altemate unthreatened sources of water 

readily available, 10. 

(5) Potential Receptors: The score for potential receptors is based on both the distance to the nearest well and also the 

number of people at risk. Each of these two components is to be evaluated using the descriptors defmed in this section: 

(a) The distance to the nearest well is measured from the area of contamination to the nearest well that draws 

water from the aquifer of concem. If a closer well exists which is known to draw water from a deeper aquifer, but 

there is no evidence that the deeper aquifer is completely isolated from the contaminated aquifer, then the distance 

must be measured to the closer, deeper well. The distance descriptors are: 

(A) Near, <l/2 mile; 

(B) Medium, 1/2-2 miles; 

(C) Far, < 2 miles. 

(b) The number of people at risk is to include all people served by drinking water wells which are located within 

two miles ofthe contaminated area. For public wells, count the number of users listed with the Oregon Health 

Division, Drinking Water Systems Section. For private wells, assume three residents per well. In lieu of a door-todoor survey of private wells, it may be assumed that there is one well per residence. The number descriptors are: 

(A) Many, > 3000; 

(B) Medium, 100-3000; 

(C) Few, < 100. 

(c) The score for this parameter is taken from the combination ofthe two descriptors using the following grid: 

Near 

Medium 

Far 

Many 

10 

10 

5 

Medium 

10 

5 

1 

Few 

5 

1 

1 

(6) The Matrix Score for a site is the sum ofthe five parameter scores in sections (1) - (5) of this mle. 

Stat Auth: ORS 465.400 & ORS 466.746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466.706 - ORS 466 835 

Hist: DEQ 15-1989, f & cert, ef 7-28-89 (andcorrected8-3-89); DEQ 46-1990, f 12-26-90, cert ef 3-1-91; DEQ 23-1998, 

f & cert, ef 11-2-98 

340-122-0335 Numeric Soil Cleanup Standards 

(1) If the Matrix Score evaluated in OAR 340-122-0330 is: 

(a) Greater than 40, the site must be cleaned up to at least the Level 1 standards listed in section (2) of this mle; 

(b) From 25 to 40, inclusive, the site must be cleaned up to at least the Level 2 standards listed in section (2) of 

this rule; 

UST Cleanup Manual 35 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

(c) Less than 25, the site must be cleaned up to at least the Level 3 standards listed in section (2) of this rule. 

(2) The following table contains the required numeric soil cleanup standards based on the level of Total Petroleum 

Hydrocarbons (TPH) as measured by the analytical methods specified in OAR 340-122-0218. 

TPH (Gasoline) 

TPH (Diesel) 

Level 1 

40 ppm 

100 ppm 

Level 2 

80 ppm 

500 ppm 

Level 3 

130 ppm 

1000 ppm 

(3) A sample of contaminated soil must be collected from each separate release area and used to identify the pefroleum 

product contamination present at that location. The Hydrocarbon Identification test specified in OAR 340-122-

0218(l)(c) (NWTPH-HCID) must be used for that purpose. The NWTPH-HCID test is not required for pefroleum 

product identification for releases from residential heating oil tanks. The results ofthe NWTPH-HCID test must be 

used tb determine which analytical method or methods are required for verifying compliance with the Matrix cleanup 

levels. At locations where the soil is contaminated with both gasoline and diesel or other non-gasoline fraction 

hydrocarbons, the gasoline contamination must be shown to meet the appropriate gasoline cleanup standard and the 

diesel or other non-gasoline fraction contamination must be shown to meet the appropriate diesel cleanup standard. 

Stat Auth:ORS 465.400 & ORS 466 746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466.835 

Hist: DEQ 15-1989, f & cert, ef 7-28-89 (andcorrected8-3-89); DEQ 46-1990, f 12-26-90. cert ef 3-1-91; DEQ 13-1992. 

f 6-9-92. cert, ef 10-1-92; DEQ 23-1998. f & cert, ef 11-2-98 

340-122-0340 Sample Number and Location 

The collection and analysis of soil samples is required to verify that a site meets the requirements of these rules. These 

samples must represent the soils remaining at the site and must be collected after contaminated soils have been 

removed or remediated. Each sample must represent a single location; composite samples are not allowed. The number 

of soil samples required for a given site and the location at which the samples are to be collected are as follows: 

(1) A minimum of two soil samples must be collected from the site: 

(a) These samples must be taken from those areas where obviously stained or contaminated soils have been 

identified and removed or remediated; 

(b) If there are two or more distinct areas of soil contamination, then a minimum of one sample must be collected 

from each of these areas; 

(c) The samples must be taken from within the first foot of native soil directly beneath the areas where the 

contaminated soil has been removed, or from within the area where in situ remediation has taken place; 

(d) A field instrament sensitive to volatile organic compounds may be used to aid in identifying areas that should 

be sampled, but the field data may not be substituted for laboratory analyses ofthe soil samples; 

(e) If there are no areas of obvious contamination, then samples must be collected from the locations specified in 

sections (2) - (5) of this rale which are most appropriate for the situation; 

(f) If it is being proposed that a pocket of contamination be left in place pursuant to OAR 340-122-0355(4), then 

sufficient samples must be collected from the site In order to estimate the extent, volume, and level of 

contamination in this pocket, and the likelihood for the remaining contamination to result in unacceptable risk 

levels due to volatilization into buildings. 

UST Cleanup Manual 36 May 2009 
# 

y 

Oregon Department of Environmental Quality - Underground Storage Tank Program 

(2) If water is not present in the tank pit: 

(a) Soil samples must be collected from the native soils located no more than two feet beneath the tank pit in areas 

where contamination is most likely to be found; 

(b) For the removal of an individual tank, samples must be collected from beneath both ends of the tank. For the 

removal of multiple tanks from the same pit, a minimum of one sample must be collected for each 150 square feet 

of area in the pit. 

(3) In situations where leaks have been found in the piping, or in which released product has preferentially followed 

the fill around the piping, samples are to be collected from the native soils directly beneath the areas where obvious 

contamination has been removed. Samples should be collected at 20 foot intervals. 

(4) If water is present in the tank pit, regardless of whether obvious contamination is or is not present, the Department 

must be notified of this fact. The responsible person shall then either continue the investigation under OAR 340-122-

0240, or do the following: 

(a) Purge the water from the tank pit and dispose of it in accordance with all currently applicable requirements. 

This might require obtaining appropriate permits from the Department or local jurisdictions; 

(b) If the pit remains dry for 24 hours, testing and cleanup may proceed according to the applicable sections of 

these soil matrix cleanup rales. If water retums to the pit in less than 24 hours, a determination must be made as to 

whether contamination is likely to have affected the groundwater outside ofthe confines ofthe pit as indicated 

below: 

(A) For the removal of an individual tank, soil samples are to be collected from the walls ofthe excavation 

next to the ends ofthe tank at the original soil/water interface. For the removal of multiple tanks from the 

same pit, a soil sample is to be collected from each of the four walls of the excavation at the original 

soil/water interface; 

(B) At least one sample must be taken ofthe water in the pit regardless of whether obvious contamination is 

or is not present. This sample shall be collected as required by OAR 340-122-0345(4); 

(C) The soil samples must be analyzed for TPH and benzene, toluene, ethylbenzene, and xylenes (BTEX). 

The water sample must be analyzed for BTEX at all sites, and for PAHs where releases of non-gasoline 

fractions have occurred. Responsible persons may use TPH analyses on groundwater samples as a preliminary 

screen for PAHs. The TPH method detection limit must be no greater than 0.5 ppm. Any groundwater sample 

for which TPH is detected must be analyzed for PAHs. These analyses must be made using the methods 

specified in OAR 340-122-0218. The results of these analyses must be submitted to the Department; 

(D) The Department shall then determine how the cleanup shall proceed as specified in OAR 340-122-0355(3). 

(5) In situations where tanks, pumps, and lines will remain in place in areas of suspected contamination, the 

responsible person must submit a specific soil sampling plan to the Department for its approval. 

(6) In situations where TPH analysis indicates that contamination is present due to a release from a waste oil tank, at 

least one sample of the waste oil contaminated soils must be collected and analyzed for volatile chlorinated solvents, 

volatile aromatic solvents, and leachable metals (Cadmium, Chromium and Lead) using the analytical methods 

specified in OAR 340-122-0218(1 )(c). Analysis for PCBs is also required if the contamination is from a waste oil tank 

other than one used exclusively for storage of automotive waste oils. 

UST Cleanup Manual 37 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

Stat Auth.: ORS 465.400 & ORS 466.746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS 466.835 

Hist: DEQ 15-1989. f & cert, ef 7-28-89 (andcorrected8-3-89); DEQ 46-1990, f 12-26-90, cert, ef 3-1-91; DEQ 13-1992. 

f 6-9-92, cert, ef 10-1-92; DEQ 23-1998, f & cert, ef 11-2-98 

340-122-0345 Sample Collection Methods 

(1) The following information must be k6pt during the sampling events: 

(a) A sketch ofthe site must be made which clearly shows all ofthe sample locations and identifies each location 

with a unique sample identification code; 

(b) Each soil and water sample must be clearly labeled with its sample identification code. A written record must 

be maintained which includes, but is not limited to: the date, time and location ofthe sample collection; the name 

ofthe person collecting the sample; how the sample was collected; and any unusual or unexpected problems 

encountered during the sample collection which may have affected the sample integrify; 

(c) Formal chain-of-custody records must be maintained for each sample. 

(2) If soil samples cannot be safely collected from the excavation, a backhoe may be used to remove a bucket of native 

soil from each ofthe sample areas. The soil is to be brought rapidly to the surface where samples are to be 

immediately taken from the soil in the bucket. 

(3) The following procedures must be used for the collection of soil samples from open pits or frenches: 

(a) Just prior to collecting each soil sample, approximately three inches of soil must be rapidly scraped away from 

the surface ofthe sample location; 

(b) To minimize the loss of volatile materials, it is recommended that samples be taken using a driven-tube fype 

' sampler. A clean brass or stainless steel tube of at least one inch in diameter and three inches in length may be 

used for this purpose. The tube should be driven into the soil with a suitable instrament such as a wooden mallet 

or hammer; 

(c) The ends ofthe sample-filled tube must be immediately covered with clean aluminum foil. The foil must be 

held in place by plastic end caps which are then sealed onto the tube with a suitable tape; 

(d) Altematively, samples may be taken with a minimum amount of disturbance and packed immediately in a 

clean wide-mouth glass jar leaving as little headspace as possible. The jar must then be immediately sealed with a 

teflon-lined screw cap; 

(e) After the samples are properly sealed, they are to be immediately placed on ice and maintained at a 

temperature of no greater than 4 °C (39 °F) until being prepared for analysis by the laboratofy. All samples must 

be analyzed within 14 days of collection. 

(4) The following procedures must be used for the collection of water samples from the tank pit: 

(a) After the water has been purged from the pit in accordance with OAR 340-122-0340(4)(a), samples shall be 

collected as soon as sufficient water has retumed to the pit to allow representative sampling; 

(b) Samples are to be taken with a device designed to reduce the loss of volatile components. A bailer with a 

sampling port is suitable for this purpose; 

UST Cleanup Manual 38 May 2009 
^ Oregon Department of Environmental Quality - Underground Storage Tank Program ' 

(c) The water is to be fransferred into two identicalglass vials with as little agitation as possible and immediately 

sealed with a teflon-lined caps. The vials must be filled completely so that no air bubbles remain trapped inside; 

(d) After the samples are properly sealed, they are to be immediately placed on ice and maintained at a 

temperature of no greater than 4° C (39° F) until being prepared for analysis by the laboratory. All samples must 

be analyzed within 14 days of collection. 

(5) The Department may approve altemative sampling methods which have been clearly shown to be at least as 

effective with respect to minimizing the loss of volatile materials during sampling and storage as the methods listed in 

sections (1) - (4) of this rale. 

Stat Auth: ORS 465.400 & ORS 466 746 . 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466.706 - ORS 466.835 

Hist: DEQ 15-1989, f & cert, ef 7-28-89 (andcorrected8-3-89); DEQ 46-1990, f 12-26-90, cert, ef 3-1-91; DEQ 23-1998, 

f & cert, ef 11-2-98 

340-122-0355 Evaluation of Analytical Results 

(1) The results ofthe soil analyses shall be interpreted as follows: 

(a) If a sample has a concenfration less than or equal to the required matrix level, the area represented by that 

sample meets the requirements of these rales; 

(b) If a sample has a concentration exceeding the required matrix level by more than ten percent, the area 

represented by that sample does not meet the requirements of these mles. Further remediation, sampling, and 

testing is necessary until the required level is attained; 

(c) If a sample has a concentration exceeding the required mafrix level by less than ten percent, the responsible 

person has the option of collecting and analyzing two more samples from the same area and using the average of 

all three to determine if the standard has been met; or further remediating the area and then collecting and 

analyzing one new sample and using the concentration ofthe new sample to determine if the standard has been 

met. Altematively, the Department has the options of approving the cleanup with no further action, requiring that 

more samples be taken, or requiring further cleanup and subsequent sampling. Such a decision shall be made 

based upon the analytical results of other samples from the site, best professional judgment made from a visit to 

the site, the apparent extent of contamination, and other site specific factors deemed appropriate. 

(2) A site shall be considered sufficiently clean when all ofthe sampled areas have concentrations less than or equal to 

the required matrix cleanup level, and when the possibilify ofany human contact with the residual soil contamination 

remaining on the site has been precluded. 

(3) If water is present in the tank pit, the Department shall decide if cleanup may proceed under these rules or if 

further action must be taken pursuant to OAR 340-122-0240. This decision shall be based on, but is not limited to: 

(a) The apparent extent of the contamination; 

(b) The likelihood that groundwater contamination exists beyond the boundaries ofthe tank pit; 

(c) The likelihood that the BTEX concentrations in the water and the BTEX and TPH concenfrations in the soil 

indicate a situation which poses a threat to public health, safefy, and welfare or the environment; and 

(d) Any other site-specific factors deemed appropriate by the Department. 

UST Cleanup Manual 39 May 2009 
Oregon Department of Environmental Qualrty - Underground Storage Tank Program ^_ _ 

(4) If a pocket of contamination exceeding the required Matrix cleanup level is located under a building or other 

stracture where fiirther removal would endanger the stracture or be prohibitively expensive, the Department must be 

notified of this situation. The Department shall then decide whether such contamination can remain without 

threatening public health, safefy, and welfare or the environment. If not, the Department shall require further 

remediation. 

(5) For waste oil contaminated sites, all detectable levels of volatile chlorinated solvents, volatile aromatic 

hydrocarbons, PCBs, or leachable metals shall be reported to the Department as soon as these results are known. The 

Department shall then decide whether the cleanup shall continue under these rales or whether further investigation is 

warranted under OAR 340-122-0205 through 340-122-0260 or 340-122-0010 through 340-122-0115. 

Stat Auth: ORS465.400 & ORS466.746 

Stats. Implemented: ORS 465.200 - ORS 465.455 & ORS 466 706 - ORS466.835 

Hist: DEQ 15-1989, f & cert, ef 7-28-89 (andcorrected8-3-89); DEQ 46-1990, f 12-26-90, cert ef 3-1-91; DEQ 23-1998, 

f & cert, ef 11-2-98 

340-122-0360 Reporting Requirements 

(1) Within 60 days of completing work at a soil mafrix site cleaned up pursuant to OAR 340-122-0320 through 340-

122-0360, or within a longer period of time approved by the Department, the responsible person must submit to the 

Department a final report which must contain: 

(a) A narrative section describing how the release was discovered, what initial measures were taken to confrol the 

spread of contamination, what was observed when the tank was removed from the pit (e.g., odor, sheen, stained 

soils, holes in tank or lines), what information was used to score the site, how the cleanup was done, how much 

contaminated soil was removed, what was done with the contaminated soil and the decommissioned tank and 

piping, who collected the samples, how the samples were collected, stored, and shipped to the lab, and any 

problems encountered during the cleanup or sample collection process; 

(b) A site map drawn to scale showing relevant information such as the location of tanks, lines, utilities, buildings, 

and other stmctures, excavated soils, samples, and any pockets of contamination left pursuant to OAR 340-122-

0355(4); 

(c) Properly filled out copies ofthe Department's Matrix Checklist and Matrix Score Sheet; 

(d) All ofthe sampling documentation required in OAR 340-122-0345; 

(e) Copies ofthe laboratory reports and chain of custody forms for all soil and water samples collected at the site; 

(f) Copies of all receipts or permits related to the disposal of free product, contaminated soil, contaminated water, 

and decommissioned tanks and piping; 

(g) A brief explanation of what was done in the case ofany samples that initialfy exceeded the required cleanup 

levels; 

(h) A summary of the concentrations measured in the final round of samples from each sampling location; 

(i) In cases where groimdwater was present in the pit, a summary ofthe data collected and the decision made by 

the Department under OAR 340-122-0355(3); 

(j) In cases where pockets of excess contamination remain on site in accordance with OAR 340-122-0355(4), a 

description of this contamination including location, approximate volume and concentration; and 

UST Cleanup Manual 40 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

(k) In cases where waste oil contamination required exfra sampling and analyses as specified in OAR 340-122-

0340(6), a summary ofthe data collected and, if appropriate, the decision made by the Department under OAR 

340-122-0355(5). 

(2) The responsible person shall retain a copy ofthe report submitted to the Department under this section until the 

time of first fransfer ofthe property, plus ten years. 

(3) Upon review ofthe report, the Department shall: 

(a) Provide the responsible person a written statement that, based upon information contained in the report, the 

soil present at the site has been cleaned up in accordance with OAR 340-122-0320 through 340-122-0360; or 

(b) Request the responsible person to submit additional information or perform additional investigation; or 

(c) Request the responsible person to conduct additional rernedial action in accordance with OAR 340-122-0250 

or 340-122-0252. , 

Stat Auth: ORS465.400 & ORS466.746 

Stats. Implemented: ORS 465:200 -. ORS 465.455 & ORS 466 706 - ORS 466.835 

Hist: DEQ 15-1989, f & cert, ef 7-28-89 (andcorrected8-3-89); DEQ 46-1990, f 12-26-90, cert ef 3-1-91; DEQ 23-1998, 

f & cert ef 11-2-98 

UST Cleanup Manual 41 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 2.5: SUMMARY OF EACH RULE 

This section summarizes each ofthe UST cleanup mles. Additional information is provided to clarify how to apply the 

mle. Although this information is provided to assist you, you should remember that it is the actual rules that vou are 

required to follow (Section 2.4), not this summary. You may wish to consult with an attomey for additional 

interpretation or explanation. 

340-122-0205 Purpose 

This simply describes the purpose ofthe mles — which is to set standards and a process to investigate, monitor and 

clean up releases from a pefroleum Underground Storage Tank (UST) system —^ and cites the Oregon Statutes (law) 

giving DEQ the authorify to adopt these mles. 

340-122-0210 Definitions 

The definitions of common terms used throughout these rales are all listed here. We recommend that you read this 

section closely, as the specific wording of a definition can sometimes make a significant difference in how to interpret 

certain rales. 

340-122-0215 Scope and Applicability 

This describes the fypes of releases that are covered by QAR 340-122-0205 through 340-122-0360. Note that some 

pefroleum releases normally covered under this portion ofthe regulations may, in certain cases, be covered under a 

different set of mles: 

• Releases from UST systems containing hazardous substances other than petroleum are covered under OAR 

340-122-0010 through 340-122-0115. 

• Releases from heating oil tanks are covered under OAR 340-177-0001 through 340-177-0095. 

340-122-0217 Requirements and Remediation Options 

This is an important mle to review and understand because it summarizes the overall requirements for the entire set of 

UST cleanup iriles and describes the options that you have for completing a pefroleum cleanup. It basically tells you: 

• All sites must be taken through certain initial phases of work such as initial response and abatement measures, 

free product removal, site characterization, and finding the extent of soil and groundwater contamination. 

• After the initial phases are complete, then a number of options are available for finishing the cleanup ofthe 

site — low-impact site cleanup (OAR 340-122-0243), risk-based remediation carried out under a corrective 

action plan (OAR 340-122-0244 and 340-122-0250), generic remedies (OAR 340-122-0252), or soil mafrix 

cleanup (OAR 340-122-0320 through 0360). 

• You may achieve the final remediation of your site by using a combination ofthe options listed above except 

for the low-impact site option, which must be applied separately. 

If you follow and understand the diagram given in Section 2.2: Rules Flowchart, then you will have a very good idea 

of what this rale covers. 

It is important to keep in mind that all measures that you take to comply with the UST cleanup mles are subject to 

Department review and approval. This is to ensure that the measures taken are appropriate for the site conditions and 

circumstances ofthe pefroleum release. Before using non-standard investigation or remediation methods, it would be 

in your best interest to first get approval from the Department. If you do not get prior approval, DEQ may later reject 

your work. Also, depending upon what cleanup options are used, your actions may be subject to public review and 

comment in addition to Departmental review. 

UST Cleanup Manual 42 May 2009 
, Oregon Department of Environmental Quality - Underground Storage Tank Program 

340-122-0218 Sampling and Analysis 

This rule lists the requirements and options you have for sampling and analyzing soil and groundwater samples when 

you are investigating a pefroleum release. Note that when you are first trying to determine the extent of contamination 

you may choose the most efficient and cost-effective techniques to investigate your site. However, when soil and 

water samples are collected and tested to determine if your site meets the relevant cleanup requirements, then you 

must use the methods laid out in this rale. This is to ensure that you have employed adequate methods and to provide 

the Department with data sets from consistent methods for better comparison of data. You may propose altemative 

sampling and analytical methods to DEQ to demonstrate compliance. However, you should get prior approval from 

DEQ or your work may be rejected. 

What you decide to test for will depend in part on what method you decide to use tp clean up your site. For example, if 

you have a fairly minor release limited to soil and decide that the soil matrix is the best option for your site, you may 

be able to investigate and clean up the site using only tests for TPH. In many cases — especially when groundwater is 

contaminated or when you are considering risk-based decision making — you will have to test for specific 

components of pefroleum such as benzene, toluene, ethylbenzene and xylenes (BTEX), or polynuclear aromatic 

hydrocarbons (PAHs). These individual pefroleum constituents are often referred to as "contaminants of concem" 

(COCs). For more information about COCs, we recommend that you refer to the document entitied Risk-Based 

Decision Making for the Remediation of Petroleum-Contaminated Sites (DEQ, September 22, 2003). 

Besides the fypical petroleum hydrocarbon constituents like BTEX and PAHs, products like gasoline usually contain 

additives such as methyl tertiary-bufyl ether (MTBE). This is fiirther complicated by the fact that gasoline 

formulations have changed over time. For example, tefraethyl lead (TEL), ethylene dibromide (EDB) and ethylene 

dichloride (EDC) were used for decades in leaded gasolines, but have been phased out since 1986. The end result is 

that the fype^ of COCs that you test for will depend not only on the product fype (e.g., gasoline or diesel), but also on 

the age ofthe release. It is up to you to consider the history ofthe site and what products have been handled in the past 

as well as the present when considering what tests to ran. ^ 

Rules 0205 through 0218 specify the circumstances under which they are to be used, define terms, and provide 

general overall direction with respect to remedial options and testing requirements. Starting with the next section 

— 0220 — specific requirements are laid out for you to Implement the rules. 

340-122-0220 Initial Response 

For every suspected or confirmed release, you must do certain things right away, including: 

• Stop the release; 

• Remove the potential for fire or explosion; and 

• Report the release to DEQ within twenfy-four hours. 

Service Providers must report the release within 72 hours if you do not. 

For infonnation on reporting a release, please refer to Section 1.1: How to Report an Underground Storage Tank 

Pefroleum Release. 

UST Cleanup Manual 43 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

340-122-0225 Initial Abatement Measures and Site Check 

After you have stopped the release, taken all emergency measures, and reported the release to DEQ, you must: 

• Remove product from the tank and piping as needed; 

• Keep product from spreading; 

• • Take initial soil and/or water samples; 

• Sample for vapors or fimies if necessary; 

• Prevent any hazards that may result from the removal of product, contaminated soils and backfill; and 

• Check whether free product is present. If free product is found, you must remove as much of it as possible, 

following OAR 340-122-0235. 

After taking the above measures, submit a report summarizing these actions to the appropriate DEQ regional office. 

This report is due within twenfy (20) days after the release has been confirmed, or within another reasonable period of 

time approved by DEQ. 

Note: If your site has been assigned an UST Cleanup project manager, check with this person to determine the 

appropriate reporting time for your site. For a more detailed discussion of how to prepare reports and what type of 

Information to Include, please refer to Section 3.1: Writing Cleanup Reports and Corrective Action Plans. 

340-122-0230 Initial Site Characterization 

The next phase ofthe investigation requires gathering information about your site and the nature ofthe contamination. 

The goals of this phase are to estimate how contaminated the soil and groundwater are as well as to gather enough 

information about the site and its surroundings to assess the potential impact ofthe release. Therefore, you will usually 

collect and analyze additional soil and/or groundwater samples^, search for nearby wells, locate buried utilities, 

identify critical habitats or wetlands, etc. 

Within forty-five (45) days after confirming the release, or within another reasonable period of time approved by DEQ, you 

. must submit a report summarizing the site characterization. Include a description ofthe nature and quantify ofthe release as 

well as how much product was recovered. Also include a detailed site plan drawn to scale identifying adjacent properties, 

buildings, tanks and excavations, and all groundwater wells. Data from all soil and groundwater samples collected during 

the initial site check and the site characterization should also be included in this report. 

Note: If your site has been assigned an UST Cleanup project manager, check with this person to determine the 

appropriate reporting time for your site. In some cases, It may be appropriate to submit only one combined report In 

place of the 20-day and 45-day reports. 

340-122-0235 Free Product Removal 

Remove all free product (i.e., unconfined pefroleum products on the ground or in water) discovered during the initial 

abatement measures as soon as possible from all tank excavations, pits, ditches, wells, and any other locations. Remove not 

only the free product that you can readily pump, but also any product that you can remove using absorbent materials. For 

recent releases, you may significantly reduce the spread of contamination if you take quick action at the outset and take out 

as much free product as you are able to remove. This may make later cleanup efforts easier and less costly. Include in your 

^ Sod samples are typically tested for TPH and, if risk is being considered, also for likely contaminants. Groundwater 

samples are usually tested for constituents. See Section 3.3: Analytical Requirements. 

UST Cleanup Manual 44 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

45-day site characterization report information about the type and thickness of product found, how much product was 

recovered, and what you did with it. 

After completing the initial site characterization, you should review all available data about your site and 

consider the following: 

If you still do not know the full extent or depth of the soil contamination, or if groundwater may have been 

contaminated and you need to determine the extent ofthe contaminant plume, then you must continue with an 

Investigation for the magnitude and extent of contamination as directed by OAR 340-122-0240. 

If you have enough Information about the location and composition of all ofthe petroleum contamination on your 

site, then you are ready to think about what cleanup option to chose: •' 

• Soil matrix cleanup (OAR 340-122-0320 through 0360); 

• Risk-based decision making proposed under a con-ective action plan 

(OAR 340-122-0244 and OAR 340-122-0250); 

• Generic remedy (OAR 340-122-0252); 

• Any combination of the above three options; or 

• Low-impact site cleanup (OAR 340-122-0243). 

340-122-0240 Investigation for Magnitude and Extent of Contamination 

As mentioned in the text box above, you must apply this rule if the information gathered during the initial site 

characterization (OAR 340-122-0230) is not sufficient to describe the fiill extent ofthe pefroleum contamination at 

your site. The goal, obviously, is to complete your investigation for the full magnitude and extent of both soil and 

groundwater contamination. This may require test pits, soil borings, push probes and/or installing monitoring wells to 

collect soil and groundwater samples. Soil gas analysis or grab samples from well-points may also be helpful in 

surveying the extent ofthe contaminant pUime. At a fairly complex site, you may need to perform this phase ofthe 

investigation in a number of steps. The contaminants that you must test for depend on the fype of pefroleum product or 

products released at your site. Please refer to the discussion under OAR 340-122-0218 for more information about the 

fypes of samples and analyses that may be required. 

Note: Groundwater samples must be collected and analyzed for the appropriate contaminants at sites where soil 

contamination extends down to, or Is in close proximity of, the seasonally high water table. Because most petroleum 

products are less dense than water, the water table acts as a confining layer that restricts the downward migration 

of the petroleum. Depending on the location of your site, the water table may fluctuate up to 10 feet seasonally. As 

the water table drops, it can effectively leave the contamination hanging within the vadose zone. When assessing 

the vertical extent of soil contamination, a rapid decline in TPH levels can indicate that you are within the zone of 

groundwater fluctuation. Therefore, some knowledge of local hydrogeologic conditions is necessary before you can 

detemnine that groundwater has not been Impacted by the release. 

During your investigation, be aware that many pefroleum cleanup sites also contain contamination from leaking waste 

oil tanks. Used crank-case oil often contains high concentrations of heavy metals and aromatic hydrocarbons such as 

benzene. Waste oil tanks have often also been used to dispose of chlorinated solvents and other non-pefroleum 

products. If you find that your site also includes waste oil contamination, you must do other tests in addition to the 

usual HCID and TPH tests, namely, you must collect at least one sample of heavily contaminated soil and test it using 

approved EPA SW-846 methods for: 

UST Cleanup Manual 45 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

• BTEX; 

• PAHs; -> . 

• Volatile chlorinated solvents; and 

• Toxicify Characteristic Leaching Procedure (TCLP) for cadmium, chromium and lead. 

If the waste oil tank has been used for purposes other than storing automotive waste oils, you must also test for 

Polychlorinated Biphenyls (PCBs). Ifany of these contaminants are detected in a sample from your site, please discuss 

this situation with the appropriate regional UST Cleanup project manager to decide how to proceed. If none ofthe 

above contaminants is detected, analysis for Total Petroleum Hydrocarbons (Method NWTPH-Dx) will usually be 

sufficient for any subsequent soil samples from the waste oil area. 

For your investigation to be complete , it must reveal the full horizontal and vertical extent of the soil 

and groundwater contamination, both on-site and off-site. 

Furthermore, relevant numerical data from the site must cleariy support the reported magnitude and extent. This 

Is critical to the success of your project. If the Investigation report Is incomplete, DEQ will request further 

Investigation. An Incomplete site investigation Is probably the most common mistake made at UST cleanup 

sites. 

After the Investigation Is complete, then you must decide what rnethod or rhethods you want to use to remediate 

your site. Your options are discussed In the following rules. 

340-122-0243 Low-Impact Sites 

The purpose ofthe low-impact site (LIS) option is to provide a sfreamlined process for use at operating gas stations or 

other industrial or commercial properties. This option allows these facilities to remain in operation while you manage 

any potential risk from contamination remaining at the site. 

The LIS option is designed to be used only at sites that meet certain requfrements. The site requfrements are Usted in 

OAR 340-122-0243( 1). Note that some ofthe requirements are not cleanup requfrements, but pertain to property use and 

how severe the release is. If these requfrements are not met, then the site cannot taken through the LIS option. For 

example, if the properfy is being sold or developed for residential use, then the LIS cleanup option cannot be used. This 

option is only for commercial or industrial facilities that plan to remain in business. This could include certain 

govemment facilities where children are not routinely present such as highway or forest service facilities and prisons. 

Most ofthe remaining requfrements in OAR340-122-0243(1) are cleanup requirements. In other words, if they are not 

met, this does not mle out the use ofthe LIS option. It simply means that you must take the necessary remedial actions 

to meet these requirements before you can close the site under the LIS option. For example, if you have gasolinecontaminated soil at your site that exceeds 1000 ppm TPH, then this soil must be freated or removed so that what 

remains does meet this requirement. 

In some cases you may decide to use institutional or engineering site confrols (i.e., risk management) instead of 

actually cleaning up the soils or groundwater to the acceptable cleanup levels. 

If you decide to propose using site confrols, you should talk to the appropriate UST Cleanup project manager about their 

application and possible consequences. DEQ requires deed restrictions on your properfy to ensure that the confrols remain 

in force. If you use site confrols on your property, you must notify DEQ ofany future changes to the properfy that might 

affect these confrols. Also, public notice will be required if institutional or engineering confrols site are needed to meet 

the cleanup requirements. See Section 3.4: Site Confrols for more information on this topic. 

UST Cleanup Manual 46 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

As with any ofthe cleanup options, you are required to submit a report to DEQ documenting the work carried out at 

the site. Carefully review and follow the LIS reporting requirements listed in OAR 340-122-0243(3). For more 

detailed information about the LIS cleanup option, including a checklist and description of what to include in a LIS 

Report, please refer to Guidance for Applying the Low-Impact Site Rule to UST Cleanup Sites (DEQ, January 200 8). 

340-122-0244 Risk-Based Concentrations 

This section ofthe rules defines the basic requirements for developing and applying risk-based concenfrations (RBCs) 

to set cleanup levels for your site. If you intend to apply RBCs at your site, you may either use generic numbers from 

tables prepared by DEQ, or calculate site-specific RBCs. The tables of generic RBCs are not included in the mles, but 

can be found in Appendix A of Risk-Based Decision Making for the Remediation of Petroleum-Contaminated Sites. 

(DEQ, September 22, 2003). 

Before you can apply any RBCs, either generic or site-specific, you must develop a conceptual site model, which 

includes: , 

• A description of all known or suspected sources of contamination; 

' • An evaluation of how and where the contaminants are likely to move ("pathways"); and 

• An assessment of who or what is likely to be affected by the contaminants ("receptors"). 

Developing a CSM requires not only a thorough investigation of the contamination (what kind, how much, and 

where), but also information about climate, geology and hydrogeology as well as local land and water uses. The goal 

ofthe CSM is to use everything you know about your site to show the contamination sources, extent and magnitude of 

contamination, concentration trends, and a summary of pathway-specific risks at the site. Risk pathways might be' 

summarized in a table or flow chart and should be accompanied with supporting documentation. An example of a risk 

pathway is "The benzene in this soil may pose a risk to downgradient residents by leaching into the groundwater and 

contaminating the drinking water." The specific requirements for the CSM, including the pathways and exposure 

scenarios that you should consider, are given in OAR 3 40-122-0244( 1). The contaminants that you should include are 

covered in OAR 340-122-0218.* These are sometimes referred to as the contaminants of potential concem (COPCs). 

For more detail on how to develop a CSM, see Risk-Based Decision Making for the Remediation of PetroleumContaminated Sites (DEQ, Stptemher 12,2003). 

After you have completed the CSM, you need to determine an appropriate RBC for each contaminant by each of your 

risk pathways. Using the example in the previous paragraph, you would need to determine a soil concenfration for 

benzene that would be low enough so that you are not likely to create an unacceptable risk to downgradient residents 

who use the groundwater for drinking water. Although you may use either generic or site-specific RBCs, DEQ 

recommends that you always start by screening the list of contaminants found at your site using the table of generic 

RBCs mentioned above. 

Continuing with the example of benzene leaching to groimdwater, the DEQ Table of RBCs lists 0.044 mg/kg (44 ppb) 

as the RBC for this combination of contaminant, pathway and receptor. If benzene in the soil at your site does not 

exceed this concenfration, then no remediation would be necessary for the benzene-contaminated soil for this pathway 

(i.e., leaching to groundwater and being consumed as drinking water). If it does exceed this concenfration, then the 

benzene would be referred to as a contaminant of concem (COC) and you have the option of 

• Calculating a site-specific RBC to determine if a less stringent .standard can be applied at this site; or 

* OAR 340-122-218(2) allows the Department to request testing for additional contaminants not listed in the rule if conditions 

warrant For a list of contaminants that may be required at your site please refer to the Table of RBCs in Appendix A of 

Risk-Based Decision Making for the Remediation of Pefroleum-Contaminated Sites (DEQ, September 22, 2003). 

UST Cleanup Manual 47 . , May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

• Cleaning up the benzene contamination in the soil so that no remaining contamination exceeds the 44 ppb 

generic standard; or _ 

• Using institutional and engineering controls to reduce risk in those areas where the soil concentration exceeds 

the risk-based concenfration. 

Note: If you propose using Institutional controls, you must Include enough discussion to show how risks are avoided 

over time and under all likely circumstances. You might do this through modeling or testing. This could require 

analysis of such things as the characteristics ofthe shallow aquifer and how likely it is to become contaminated; or. If 

groundwater were to become contaminated, how likely It would be to travel off-site. See Section 3.4: Site Controls 

for more information on Institutional and engineering controls. 

Each relevant combinations of contaminants, pathways and receptors at your site must be evaluated in this fashion. If 

the concenfrations detected at your site are low enough that they do not exceed any ofthe generic RBCs, the easiest 

way to close the site may be to use the Department's Generic Remedy for Simple Risk-Based Cleanups. Information, 

applicabilify and reporting requirements about this generic remedy can be found in Section 4.0 ofthe document RiskBased Decision Making for the Remediation of Petroleum-Contaminated Sites (DEQ, September 22, 2003). 

If you decide to calculate site-specific RBCs, DEQ recommends that you start by following the process used for the 

generic RBCs. This is explained in detail in Appendix B of Risk-Based Decision Making for the Remediation of 

Petroleum-Contaminated Sites (DEQ, September 22, 2003). Suggestions for site-specific calculations are also 

provided in that document. After you have calculated site-specific RBCs, compare your sample data to these RBCs. If 

concenfrations at your site do not exceed the site-specific RBCs, then you may want to propose that the site be closed. 

If contaminant levels exceed the site-specific RBCs, your options are to perform additional cleanup, or to consider 

using institutional and engineering confrols to reduce risk at the site. 

The RBCs mentioned above are used to evaluate potential risk to human health. Before your site can be closed under 

the risk-based option you must also show that there are no unacceptable risks to ecological receptors (e.g., wetlands). 

For most fypical gas station sites this will only require that you screen your site with the four conditions listed in OAR 

340-122-0244(3). If your site does not meet all of these screening requirements you may be asked to carry out a basic 

ecological risk assessment. More information about this fype of assessment can be found in Guidance for Ecological 

Risk Assessment - Level I: Scoping (DEQ, 1998). (See Section 5.2 for the web address of this document.) 

All risk-based cleanups, except for those that are closed under the generic remedy mentioned above, are required to: 

• Be submitted to the Department in a corrective action plan (OAR 340-122-0250); and 

• Receive public notice before final approval (OAR 340-122-0260). 

For more information about conceptual site models and risk-based concentrations, including tables of generic RBCs, 

and guidance for calculating site-specific RBCs, please refer to Risk-Based Decision Making for the Remediation of 

Petroleum-Contaminated Sites (DEQ, September 22, 2003). A flowchart which shows the steps and options in the 

risk-based decision making process is provided on the next page for your reference. Also see Section 5.2: Additional 

Guidance Documents for more information on institutional confrols, land use and beneficial water use. 

UST Cleanup Manual 48 ' May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

No 

Complete site investigation and 

refine conceptual site model. 

7 

Does site meet ecological risk 

screening requirements? 

'"-"""'^^1 

Finalize conceptual site model 

and screen COPCs. 

i 

Prepare list of 

chemicals of potential concem. 

•f 

Do any concentrations exceed generic 

RBCs for CSM pathways? 

- 1 

Is remediation to generic RBCs 

cost-effective/practicable? 

Yes 

r 

Submit con-ective action plan with 

proposed RBCs, remedial actions, 

and institutional/engineering controls. 

Implement CAP. 

_ f 

Is continued monitoring required? 

No r 

C Public Notice ^ ^ 

\ No Further Action y 

Risk-Base( 

No 

No 

^ 

No ^ 

No 

Yes 

No 

Yes 

i Decision ly 

' r 

KEY 

1 Required Task | 

1 Decision Point | 

Q End Point 

Check with DEQ about 

ecological risk assessment. 

:) 

/ ^ Consider using generic remedy ^ \ 

\ for simple risk-based cleanups. y 

Do site conditions differ from defaults 

used to calculate generic RBCs? 

- • ; " 

Calculate site-specific RBCs 

tor relevant pathways and COCs. 

'\ 

Do any concentrations exceed sitespecific RBCs for CSM pathways? 

Yes4 

Is remediation to site-specific RBCs costeffective/practicable? 

No X 

Is a better model available? 

Did you get approval for use from DEQ? 

No 

Yes 

Conduct monitoring to confinn that 

compliance goals have been met. 

/faking Flowchart 

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Oregon Department ofEnvironmental Quality - Underground Storage Tank Program 

340-122-0250 Corrective Action Plan 

The UST Program has received many questions and comments about what to Include in corrective action plans 

(CAPs). People often assume that CAPs must be long, complex reports. Although such a document would be 

appropriate for a complex site, we would like to make it clear that a CAP should be no more complex than the site. It 

should tell us what happened, what you did, what your goals (cleanup levels) are, and how you propose to reach 

your goals; It should include sufficient information to describe and support your proposal as well as demonstrate to 

us that what you plan to do will likely work. A small site may only need a 5-10 page CAP whereas a large site may 

need a 50-100 page CAP. Don't skimp, but don't overdo It 

This rule lists the information that you must include in a corrective action plan (CAP). You will have to submit a CAP 

when you are proposing to use: 

• Site-specific RBCs as your cleanup levels; and/or 

• Institutional or engineering confrols to reduce exposure to contaminants at your site. 

We may also require you to prepare a CAP in certain other cases depending on site conditions.' 

In your CAP you should tell us how you will respond to each COC in contaminated soil and groundwater. The main 

thing to keep in mind is that the CAP must adequately describe the site and what was, found there, and include 

sufficient information to support the proposal that you are making. Relatively complex sites may require a detailed 

CAP. However, CAPs for relatively simple sites may be quite short and not significantly different than what you 

would submit for a soil matrix or low-impact site. The main difference is likely to be that the CAP will need to include 

information about why you eliminated certain pathways, how you calculated site-specific RBCs and may also include 

a discussion ofthe proposed engineering or institutional confrols. 

Many CAPs submitted in the past have been considered incomplete. DEQ retums these with requests for more information. 

To avoid this difficulfy and delays in cleaning up your site, keep in mind the three following important points: 

1. You shouldn't submit a CAP until you have determined the full magnitude and extent of all 

contamination (soil, groundwater, surface water, and vapors both on- and off-site). 

Make sure that the numerical data and figures from your site clearly support any statements made about the extent of 

contamination. Any CAP submitted without first determining the magnitude and extent of soil and groundwater 

contamination will be considered incomplete. 

In some cases you may asked to begin developing a CAP while you complete the delineation of soil and groundwater 

contamination. This request is generally made if the initial site characterization indicates some form of corrective 

action is necessary although the fiill scope ofthe remediation project is still unknown. 

It is not necessary to wait until a CAP is approved in order to perform corrective actions, unless 

implementation ofthe corrective action carries additional human health risks that must be evaluated. 

Because environmental cleanups are complex, it may take a long time to move your site through the necessary 

regulatory steps. It is not unusual for delays to occur while you are preparing a report or while we are reviewing it. 

During this time, however, the contamination at your site may continue to move, making it more difficult and 

expensive to clean up. Therefore, throughout the cleanup process, you are not only allowed (OAR 340-122-0250( 11)) 

' CAPs are not required for soil matrix or low-impact site, cleanup projects. They may also not be required in certain generic 

remedies, but you should refer to the specific generic remedy guidance to see what type of reporting is required. 

UST Cleanup Manual 50 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

but also encouraged to take steps to limit the environmental impact ofthe contaminants. Note, however, that you must 

notify DEQ about such activities, comply with any conditions DEQ may impose, and incorporate any steps you take 

into your CAP. For example, vapor extraction systems and recovery wells may be operating before submitting the 

CAP. These actions should be described in your CAP. 

3. A CAP must include enough design and test data to show that the plan is adequate for its purpose. 

The CAP should demonstrate, using test data, that actions being taken are likely to be effective. For example, recovery 

wells or vapor exfraction systems should have enough field data to show that they cover the entire contaminated area 

and operate effectively. 

Specific requirements for submitting progress reports during implementation ofthe CAP are not listed in the rules. 

You should discuss progress report requirements with the appropriate regional UST Cleanup project manager. For 

more information on writing CAPs and other reports, please refer to Section 3.1: Writing Cleanup Reports and 

Corrective Action Plans. 

Note: Since investigations and cleanups tend to be conducted In phases, it is important to submit reports to DEQ at 

appropriate intervals. 

340-122-0252 Generic Remedies 

This rule authorizes the DEQ to develop "generic remedies" for pefroleum cleanups. A generic remedy is a cleanup 

option designed to apply to a specific group of cleanup projects with similar properties or characteristics. In 

developing a generic remedy, the Department must seek public input and review before publishing the final document. 

However, developing a generic remedy is not a rulemaking action, and generic remedies can be more easily modified 

(after public review) if information changes over time. 

Unlike the other mles discussed above, there is nothing in this particular rule that applies to you when cleaning up 

your site. What you do get out of this rule, after we develop them, are sfreamlined approaches to cleanup that can be 

applied to certain categories of sites. 

So far we have developed two generic remedies that apply to pefroleum-contaminated sites: 

• Generic Remedy for Simple Risk-Based Cleanups, which can be found in Section 4.0 ofthe document RiskBased Decision Making for the Remediation of Petroleum-Contaminated Sites (DEQ, September 22,2003); 

and 

• Heating Oil Tank Generic Remedy Guidance Document (DEQ, Updated August 2007). 

Please refer to those documents for the specific details of each generic remedy. 

340-122-0260 Public Participation 

Public participation is an important part ofthe UST Cleanup program. This rule implements the statutory requirement 

for DEQ to maintain a list of all confirmed UST releases. You may request a copy of this list from DEQ, or find it on 

our web site. 

If a release requires a Corrective Action Plan (OAR 340-122-0250) or implementation of engineering or institutional 

confrols, we must notify potentially affected properfy owners and the general public. Notice may be given in various 

ways, but usually includes publishing a press release or requiring the responsible person to notify adjacent properfy 

owners. In addition, DEQ may hold public meetings to inform interested persons ofthe actions proposed orto hear 

comments from the public about a specific cleanup project. 

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340-122-0320 SoilMatrix Cleanup Options 

The soil mafrix cleanup option is covered by rules OAR 340-122-0320 through 340-122-0360. As implied by its 

name, this option is designed only for soils. However, if your site has both soil and groundwater contamination, you 

may choose to use the soil matrix option for the soils and another option, such as the risk-based concenfrations, for the 

groundwater. 

Under this option you must first decide whether to: 

• Choose the most stringent soil mafrix cleanup level, in which case you don't have to do a site-specific 

evaluation; or 

• Evaluate your site as outlined in the rules and use the resulting soil mafrix cleanup level. 

You might decide to immediately choose the most stringent cleanup level to avoid having to determine site-specific 

evaluation factors such as depth to groundwater or native soil fype. Another reason to chose the most stringent cleanup 

level might be to try to minimize any potential future liabilify at the site. In most cases, however, you will probably 

want to determine a site-specific cleanup level to potentially reduce your cleanup costs. 

340-122-0325 Evaluation of Matrix Cleanup Level 

This part ofthe matrix rules tells you how to determine the required soil cleanup level for your site. First, you must 

assign scores to the five site-specific factors listed in OAR 340-122-0330. Then compare your total score to the table 

given in OAR 340-122-0335. .-

340-122-0330 Evaluation Parameters 

The five site-specific parameters that you must evaluate to calculate your soil matrix score are depth to 

groundwater, mean annual precipitation, native soil fype, sensitivify of the uppermost aquifer, and potential 

receptors. Many people may think it best to hire a licensed Soil Matrix Service Provider to do the work for them. 

However, it should not be necessary to perform any specific scientific tests to evaluate these site-specific 

parameters. In most cases, the desired information is readily available. 

For example: 

• Depth to groundwater: Talk to the owner of a nearby shallow well or call the local Water Master or a local 

well driller. 

• Mean annual precipitation: Call the National Weather Service. (Note: You should NOT reduce the rainfall 

amount for your site just because your properfy is paved.) 

• Native soil types: Examirie these materials when you dig up the tank. 

• Sensitivity ofthe uppermost aquifer: Talk to the local Water Master, the Health Department or the Water 

Resources Department. 

•' Potential receptors: Estimate by obtaining information about wells in the area from the local Water Master, 

the Water Resources Department, or by asking people in the neighborhood if they have private wells. 

340-122-0335 Numeric Soil Cleanup Standards 

This rule tells you what your soil cleariiip level is based on your site's mafrix score and on the fype of pefroleum 

product that was released. After you have evaluated the five parameters for your site, assign the proper score to each 

one. Then total the scores and use them to determine whether the site is Level 1,2 or 3 as explained in section (1) of 

the rule. To determine the required cleanup level, you must also know and prove, by means of specified analytical 

methods, the nature ofthe petroleum contamination.. Tp accomplish this, you must collect a sample of obviously 

UST Cleanup Manual 52 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

contaminated soil and have it analyzed using the Department-approved Hydrocarbon Identification Test (Method 

NWTPH-HCID). After you know the product fype, you can use the table in section (2) of this rule to set your soil 

matrix TPH cleanup level. 

If the contamination being cleaned up on your properfy is from: 

• Gasoline spills or releases, you must use the gasoline cleanup levels listed in the table. 

• Diesel, heating oil, or some other non-gasoline pefroleum product covered by the rules, you may use the 

diesel cleanup levels. 

• A mixture of gasoline and a non-gasoline product such as diesel, then the gasoline component must meet the 

gasoline cleanup levels and the non-gasoline component must meet the diesel cleanup levels. 

• Waste oil, you must first do some additional testing before you can use a matrix cleanup option at your site. 

See OAR 340-122-0340(6) for the additional tests required for contamination from waste oil tanks. 

Note: DEQ does not recommend nor require the use of specific cleanup methods. For minor releases, the quickest 

and least expensive cleanup method may simply be removal and proper disposal ofthe contaminated soil. However, 

as landfills close and tipping fees Increase, other options may need to be considered. 

340-122-0340 Sample Number and Location 

The soil matrix option was designed as a sfreamlined process for closure when dealing with a simple, soil-only site. As 

previously stated, however, it may be used in combination with other options at more complex sites. Most simple soil 

matrix cleanups receive little or no DEQ oversight. Therefore, it is important that you collect enough samples from the 

proper locations so that when we review your report we have enough information to decide if the work has been 

completed correctly. Otherwise you may have to take equipment and personnel back on site to collect the sample data you 

need. This mle lays out the sampling requirements for the soil matrix option. 

The simplest sites will fypically require only two soil samples, collected in native soil just beneath each end ofthe 

tank. But this will be sufficient only if there is little or no obvious contamination. If you find contamination that 

exceeds the soil mafrix cleanup level for your site, you must remove or clean up the most obviously stained or 

contaminated soils, and then collect additional samples from those areas. Most sites will probably require more than 

two samples. For example, if you have cleaned up several distinct areas of contamination on your site, you must take 

at least one discrete sample from each area. Also, if piping has not been removed during excavation, you must sample 

below the piping at 20-linear-foot intervals and under dispenser islands. 

If the tank pit contains water, you must follow special requirements. First, pump the water from the pit. Then, if 

water retums to the pit within twenfy-four hours, you must collect a water sample. You should collect the sample as 

soon as enough water has retumed to the pit to allow you to use the sampling device. In this situation, you must also 

collect soil samples from the walls ofthe pit, at the level where the water was first found before you pumped it out 

(/.£., at the soil-water interface). 

The required tests in these cases are: 

• Soil samples must be tested for total petroleum hydrocarbons (TPH), using the analytical method for the fype 

of contamination at the site (e.g., gasoline, diesel, waste oil, etc.); and for benzene, toluene, ethylbenzene and 

total xylenes (BTEX). 

UST Cleanup Manual 53 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

• Water samples must be tested for BTEX at a minimum. Because of concems about fuel additives, we have 

also been asking for MTBE testing in water samples at most sites.'" At sites where diesel or other nongasoline products have been released, you should also test for polynuclear aromatic hydrocarbons (PAHs). 

Note: The soil matrix option allows you to use TPH analyses on groundwater samples as a preliminary screen for 

PAHs. The TPH method detection limit must be no greater than 0.5 ppm. Any groundwater sample for which TPH is 

detected must be analyzed for PAHs by the methods specified in OAR 340-122-0218. Although this may be a useful 

screen for very simple sites, at more complex sites where risk questions may arise you will be better off having the 

actual PAH results. For this reason, we normally recommend that you skip the screen and test directly for PAHs. 

If you encounter contamination from a waste oil tank, you must follow special requirements. When there is a 

release from a waste oil tank, you must collect a sample ofthe contaminated soil and test it for the presence of nonpefroleum contaminants such as volatile chlorinated solvents, leachable metals (cadmium, chromium, and lead), and, 

in some cases, PCBs. Note that this must be an obviously contaminated sample. You should try to obtain a sample 

from the most contaminated area ("worst case" sample). The purpose of this sample is to identify constituents in the 

waste oil contamination, not to confirm that you have reached a particular cleanup level. You must prove to the 

Department that there are no non-petroleum contaminants in the release of waste oil in order to get approval to use soil 

matrix cleanup levels for waste oil contamination. 

340-122-0345 Sample Collection Methods 

You must collect soil and water samples in ways that will not cause volatile compounds to be released to the air. 

Therefore, as you collect the samples, disturb the soil as little as possible. Collect and store all samples individually in 

proper containers, and store them immediately on ice. Composite samples" are not acceptable. You must also 

carefully label each sample, mark its location on a site diagram, record the name ofthe sample collector, note any 

unusual conditions that you encounter during sample collection, and use proper chain-of-custody procedures. 

If you intend to collect your own samples, you should contact the laboratory that will analyze your samples and get 

the proper sampling equipment. The laboratory will usually also be able to give you tips on collecting samples as well 

as on logging, handling, storing, filtering, and transporting the samples. Make sure that you fill out chain-of-custody. 

forms for all of your samples. Proper handling and documentation are critical. If there are doubts about the sample 

collection methods used at your site, you may be required to collect and analyze another set of samples. 

340-122-0355 Evaluation of Analytical Results 

When the results of your sample analyses come back from the laboratory, you should examine the data to determine if 

your site meets the required soil matrix cleanup standards. This will usually require only a simple comparison ofthe 

lab results to the site-specific soil matrix cleanup level. However, you should contact the appropriate regional UST 

Cleanup project manager to discuss how best to proceed if: 

• Water samples analyzed are found to contain detectable levels of BTEX and/or MTBE; or 

• Waste oil contaminated soil samples are found to contain detectable levels of BTEX, volatile chlorinated 

hydrocarbons, PCBs or leachable metals. 

If contamination remains at a concentration greater than the calculated numeric soil cleanup level, you will usually 

have to perform additional cleanup. When you think the contamination has been adequately cleaned up, another round 

'" If you have a question about MTBE testing, check with a UST project manager at the appropriate regional office. 

" Composite samples are made up by mixing several samples from different locations into one final sample. Such mixing of 

samples is not allowed. 

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' Oregon Department of Environmental Quality - Underground Storage Tank Program 

of samples will be required to confirm that the final levels are within acceptable limits. Confirmation samples must be 

analyzed using the appropriate TPH test method.' 

( • . • , 

Sometimes pockets of contamination exceeding the soil matrix cleanup levels are located under buildings or in other 

locations where fiirther cleanup would be expensive relative to the risk posed by the contamination. In such cases, you 

may be able to get permission from DEQ to leave this contamination in place, as specified in OAR 340-122-0355(4). 

To do this you will usually have to collect additional samples to determine where the remaining contamination is 

located, and estimate both the volume and average concenfration of contamination in the "pocket" that you would like 

to leave on site. Remaining contaminant concentrations in the pocket must not exceed the generic risk-based 

concenfrations listed in Appendix A of Risk-Based Decision Making for the Remediation of Petroleum-Contaminated 

Sites (DEQ, September 22, 2003). If the concentrations exceed the RBCs, you may no longer be able to use the soil 

matrix option for that portion ofthe site. You should refer to OAR 340-122-0217 Requirements and Remediation 

Options or contact the appropriate regional UST Cleanup project manager to discuss how to proceed. 

340-122-0360 Reporting Requirements 

When soil mafrix work at the site has been completed, you must submit a report to DEQ as described in this rule. The 

report must include a written description of all activities that took place at the site, and other necessary items such as a 

site map, copies of laboratory data sheets, and completed matrix score sheet and checklist. You must submit this report 

to us within 60 days of completing the work at your site. 

Because soil matrix sites are fypically cleaned up with little or no oversight by DEQ, UST Cleanup project managers 

depend heavily on information in the matrix report to determine if work has been done properly. If you submit 

incomplete reports, it will cause delays in completing work at your site and may require you to take more soil samples 

or collect other missing data. Please carefully review the requirements of OAR 340-122-0360 and refer to other 

sections of this cleanup manual for the matrix checklist and scoresheet and additional information on writing reports. 

After a regional UST Cleanup project manager has been assigned to your project (refer to Section 1.7: Cost Recovery 

for Departmental Oversight Work for information on how projects are assigned), the final report will be reviewed and 

you will be notified whether: 

• No further action is necessary at your site; 

• More information must be submitted before a decision can be made; or 

• Contamination remains that is outside the scope ofthe soil matrix option and you must select another cleanup 

option for part or all of your site (see OAR 340-122-0217). 

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SECTION 3: UST CLEANUP GUIDANCE 

SECTION 3.1: WRITING CLEANUP REPORTS AND CORRECTIVE ACTION PLANS 

The UST cleanup mles require you to submit reports to DEQ at key points during the investigation and cleanup of 

pefroleum releases. These reports range in complexify from the sfraight-forward summary of initial response and 

abatement measures (the "20-day" report), to the detailed presentation of a corrective action plan (CAP). Please 

remember that some documents, such as quarterly reports, can be sfreamlined as long as they contain all the required 

elements. This section ofthe UST Cleanup Manual provides suggestions to help you prepare reports and CAPs. If you 

follow these suggestions your UST Cleanup project manager should be able to review your report more quickly. 

Note: This is not the only guidance document that contains infonnation on writing reports. Other sources of 

Information are: 

• A summary of reporting requirements for low-Impact sites can be found In Section 3.4.2 of Guidance for 

Applying the Low-Impact Site Rule to UST Cleanup Sites (DEQ, January 2008). A checklist Is also 

included in Appendix C of that document to provide you with additional assistance. 

• Information on developing a CAP for risk-based sites can be found in Section 3.2.3.2 of Risk-Based 

Decision Making for the Remediation of Petroleum-Contaminated Sites (DEQ, September 22, 2003). 

• The reporting requirements forthe generic remedy for simple risk-based cleanups are given in Section 4.4 

of Risk-Based Decision Making for the Remediation of Petroleum-Contaminated Sites (DEQ, September 

22, 2003). 

3.1.1: General Information 

When preparing a report, keep in mind that your report must: 

• Provide up-to-date status about conditions at the site so that we can decide if the work being done is 

acceptable and if actions being proposed are both reasonable and appropriate; and 

• Stand as a permanent record that will remain in the Department's files and can be reviewed by interested 

parties who want to know what cleanup activities took place at your site. 

For these reasons, it is important that each report be independent. In other words, when a series of reports are submitted 

over time for a given site, it should not be necessary to read all previous reports to obtain an overview of what has been 

done at the site since the release occurred. This does not mean that you will have to repeat everything contained in 

previous reports, but it does mean that past activities discussed in detail in earlier reports should be summarized in 

subsequent reports. You may need to repeat certain items from past reports if they are essential to the discussion in the 

current report. For example, to describe frends, you will always need to include a complete listing of both old and new 

data. In general, however, much information from earlier reports can be summarized and specific references provided to 

those reports in case the reader wants to look up the details on a certain item. 

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3.1.2: Generic Report Outline 

You should consider the outline below to be an example of what would be needed in a report for a risk-based site. 

Most reports will not require all ofthe information listed below. The table in the next section has been developed to 

help you decide what fypes of information to include in the different reports that are due at various stages of the 

cleanup process. ~ 

1. 

II. 

III. 

IV. 

V. 

VI. 

Vll 

ii. 

Iii. 

1 

Generic Report Outline 

Table of Contents 

List of Figures 

List of Tables 

Introduction 

A. 

B. 

C. 

D. 

Progress Summary 

Site Description 

Background 

Site Maps 

1. General Location Map 

2. Detailed Site Plan 

Regional and Local Geology and Hydrogeology 

Technical Information 

A. 

B. 

C. 

Soil and Groundwater Sampling 

Subsurface Investigation 

Field Tests 

Results 

A. 

B. 

Presentation of Data 

Discussion and Analysis of the Results 

Conceptual Site Model 

A. 

B. 

C. 

Sources 

Exposure Pathways 

Receptors 

Corrective Action Measures 

A. 

B. 

C. 

D. 

Cleanup Options 

Contaminants of Concem and Risk-Based Concentrations 

Cleanup Actions Already Taken 

Future Cleanup Activities 

. Conclusions 

VIII.Supporting Documentation (Appendices) 

IX. References 

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3.1.3: Minimum Reporting Requirements 

As mentioned in the previous section, these guidelines are meant to apply to a wide yariefy of UST Cleanup reports as 

well as corrective action plans. Therefore, not every topic listed on the generic report outline on the previous page will 

be appropriate for every report. However, unless otherwise directed bv the UST Cleanup project manager assigned to 

your site, you must cover the following topics when preparing reports associated with the stages ofthe UST cleanup 

mles listed below: 

For reports on: 

Initial Response and Abatement Measures 

(20-day report) 

Initial Site Characterization 

(45-day report) 

Investigation for Magnitude and Extent of Contamination 

Quarteriy Reports 

(e.g., groundwater monitoring reports) 

Corrective Action Plan 

Soil Matrix Cleanup Reports 

Include the following sections 

from the main outline in ' 

Section 3.1.2: 

i-ili 

I.A, I.Bandl.D 

IV 

VII-IX 

i-ill 

1 

III.A, and III.B 

IV and V 

VII-IX 

i-iil 

l-V 

VII-IX . 

i-iil 

1 

III and IV 

VII-IX 

i-iil 

l-IX 

l-lli 

LA, I.Band I.D 

III.A 

Vll and VIII 

Matrix score sheet 

& checklist 

The specific information that you must include for each ofthe required topics is discussed in the next section. Please 

refer to that section for guidance when preparing your reports and CAPs. Ifany ofthe required information caimot be 

obtained, you must include a statement to that effect in your report. If you omit required information because it seems 

irrelevant to your site, you must include a rationale for this omission in your report. Remember: the complexity ofthe 

site and the stage ofthe investigation determines the complexity ofthe report 

Note: If you have any questions about what Items must be Included In your report or what level of detail is 

necessary, please contact the appropriate regional UST Cleanup project manager. 

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3.1.4: Material to Include in Reports and Corrective Action Plans 

The guidance presented below lists the specific items to include in various sections of your reports, and discusses how 

some ofthe material should be presented. Explanatory material is presented in regular fype. Subjects you should 

consider including, depending on the conditions at your site, are listed in italics. 

For easy reference, the opening pages of all reports and CAPs should include: 

Table of Contents 

List of Figures 

List of Tables 

Signature Page (include licensing information, professional stamps, and other 

relevant information about the authors of this document.) 

L INTRODUCTION 

The infroductory sections of a report should provide a summary of pertinent historical information as well as a 

description of the site. The site description should be complete enough so that a person who has never visited the 

location can follow arguments made in the report as well as anticipate the potential impact ofthe release on the local 

health, safefy, welfare and the environment. 

A. Prosress Summary 

You must include a narrative section summarizing the work done at the site since the release was detected. This 

section should generally be written for a non-technical audience. The technical details should be discussed later in a 

separate technical section. For portions ofthe project that have been previously reported, a brief overview should 

suffice. Where needed, be sure to include references to previous reports. The narrative should provide a more detailed 

discussion of work completed since the last report. 

The stage ofthe project and the contents of previous reports will determine which items are summarized briefly and 

which are discussed in detail in the summary section. However, you should fypically include: 

How the current release was detected (routine decommissioning, etc.); 

What product was released; 

Results of an UST inventory reconciliation or other estimate ofthe volume ofthe release; 

Summary of any previous work done at the site related to the current release before your involvement (such as 

decommissioning work or initial cleanup work by another contractor); 

Initial abatement measures that were taken; 

Observations made when the tanks were removed such as color of soil, odor, product age, holes in tank, etc.; 

Locations of observed contamination; 

Quantity of free product recovered; 

What you have done to determine if there is any potential vapor impact from the source as well as from any 

contaminated materials (soil, water, fi-ee product) removed fi'om the ground; 

Approximate volume ofall contaminated soil, free product or groundwater removed fi'om the site, and what was 

done with them; 

What was done with the decommissioned tanks and associated piping (ifunused piping was not removed, explain 

why not); 

Description of activities to monitor contaminants (test pits, soil borings, well installations, soil gas, etc.); 

Description of how you did the cleanup, e.g. all activities to remove contaminants (excavation, pumping, vapor 

extraction, etc.); 

Description ofany unusual conditions or problems encountered; and 

Description of who collected the samples, how they were collected, stored, and shipped to the laboratory. 

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If appropriate, you should also include a discussion ofany legal or public relations/informational activities relevant to 

the site. 

B. Site Description 

Your report should describe your site, the immediately adjacent properties and the general surrounding area. Include: 

• The address and location of the property; 

• The size and dimensions ofthe property; 

• The legal description ofthe property; 

• Natural and man-made features on theproperty; 

• Uses ofthe adjacent properties; 

• The water supplies for area residents and facilities; and 

• Any important natural or man-made features near the property, such as streams, wetlands, wells, sewer lines, 

buried or overhead utility lines (include approximate distances fi'om the site to these features). 

C. Background 

Background information should provide relevant history about the site before the discovery ofthe release. Include: 

• Important past uses of theproperty (paint shop, body shop, etc.) that may have caused some ofthe contamination, 

including the years, if known, during which the property was used for such purposes; 

• A summary of all past complaints (vapors, water in tank, etc.) about this property including any Notices of 

Noncompliance or Notices of Violation issued by the Department; 

• A summary of past releases (what happened and what was done); 

• Current use of property; and 

• Current owners and operators of the property/facility. 

D. Site Maps 

To complete the description ofthe site, include at least two maps in your report. 

1. General Location Map 

This map should show where the site is located within the cify or general surrounding area, and include: 

• Names of major streets; 

. • Location of the site; 

• Location of wells potentially affected by the release including wells listed with the Oregon Water Resources 

Department and wells identified during field surveys; 

• Location of nearby surface waters, wetlands, and other environmentally sensitive areas; and 

• • Location of any other important features discussed in the report such as possible off-site sources of 

contamination or receptors. 

• A north-direction arrow (with north at the top of page, if possible) 

These items should be highlighted or clearly marked in some way on the map. 

2. Detailed Site Plan 

- This map should have a detailed view ofthe site and be drawn to scalerMeasuring distances to the nearest foot 

should be sufficient. Surveying will usually not be necessary, except you will need to survey for wellhead 

elevations at groundwater sites. This map must include: 

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Property boundaries; 

Names of surrounding streets and properties (including use of adjacent properties); 

Buildings and other man-made features, such as canopies, walls, wells and all buried utilities; 

Important natural features, such as hills, drainage ditches, surface water; 

Current and former tanks, both above and below ground, as well as piping and dispensers; 

Areas of known or suspected releases or existing contamination; 

Sample collection sites including samples taken during decommissioning or during previous stages ofthe 

investigation; 

Monitoring wells and push probe holes (shown in precise locations); 

Excavations, any stockpiled soil all remaining soil contamination; and 

Other relevant details mentioned in the text of your report 

All detailed maps must include a scale, a key to symbols used, a north-direction arrow (with north at the top of 

page, if possible), and, when known, the direction of groundwater flow. 

n. REGIONAL AND LOCAL GEOLOGY AND HYDROGEOLOGY 

Include information discussing relevant features of the regional and local geology and hydrogeology. Initial site 

reports may include mostly general information obtained from published reports. By the time you submit a CAP, you 

should have done enough studies to include detailed site-specific information. Include: 

The climate; i 

The regional and local geology; 

The local topography and other features that may control surface and subsurface flow; 

Discussion of major surface drainages in the vicinity; 

Local soil type and characteristics; 

Regional groundwater flow direction; 

Depth to first groundwater and seasonal fluctuations; 

General description of deeper aquifers including potential or known connection to other aquifers; 

Groundwater quality and use of local aquifers; 

Nature of aquifer materials including permeability, transmissivity, and porosity of potentially affected aquifers; 

The magnitude and direction of vertical and horizontal gradients as well as the mean velocity of contaminated or 

potentially contaminated groundwater; 

Seasonal variations in groundwater flow directions; and 

Appropriate maps. 

Maps should be included showing water table elevations, groundwater contours, and groundwater flow directions for 

aquifers of interest in the vicinify ofthe site. Well locations should be clearly shown to scale on these maps. 

m. TECHNICAL INFORMATION 

You should discuss all aspects ofthe work at a cleanup site in the Progress Summary section of a report; however the 

technical details not immediately relevant to that discussion are best covered separately in a "Technical Information" 

section. Some topics best handled in this way are: 

A. Soil and Groundwater Sampling 

Whenever samples ofany kind are collected, you must discuss the complete sampling program. Sampling may be the 

most critical part ofthe work done at your site and should be very carefully planned BEFORE any samples are taken. 

To avoid common problems that occur in investigating pefroleum-contaminated sites, make sure that you: 

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• Are aware that composite samples are NOT acceptable for volatile materials, nor are composite samples 

acceptable for any confirmation samples; 

• Sample and analyze for non-pefroleum contamination if that is warranted (such as in cases of waste oil 

contamination - see OAR 340-122-0218 in Section 2.5: Summary of Each Rule); 

• Determine the specific analytical methods needed for your samples and check that the laboratory that you are 

planning to use is capable of performing these methods; 

• Check with the laboratory to fmd out if they can generally attain a detection limit low enough for your purposes; 

and 

• Always measure the depth to groundwater and purge well(s) before every groundwater sampling event. 

Discussion of your sampling results should include: [ 

Where samples were collected (include the depth of soil samples) and why you chose these locations;. 

The relationship between sample locations and known areas of contamination; 

Well purging rates, volumes, methods, and water disposal; 

How the samples were collected, preserved and stored (give details); 

Soil sample description including lithology, odor, color, staining and whether the soil was removed or left in 

place ; • • 

Who collected the samples; 

What quality assurance measures were taken (how the sampling equipment was cleaned); 

What quality control measures were taken (field blanks, travel blanks); 

How the samples were packed and transported to lab; 

Use of proper chain of custody procedures; 

What was the length of time between sampling and analysis; 

To what lab were the samples shipped; and 

What analytical methods you requested (give the specific EPA method numbers) and why. 

B. Subsurface Investigation 

Include pertinent technical design and installation information and why you used those methods and' equipment. 

Discuss: 

• Choice of well and push probe location(s); 

• Well design as related to proposed use; 

• Well installation methods, data, as-built diagrams and logs (include names ofthe well driller and person who 

logged the wells); 

• Soil samples collected during drilling and field vapor screening; 

• Reason for choice of materials used, depth of installation, length and location of screened interval, slot size and 

filter pack grain size; 

• Well development methods; 

• Well development or production rate and water disposal; 

• Parameters used to determine when development was complete; and 

• Any problems or unusual circumstances encountered during the installation and development ofthe wells. 

Remember that all groundwater monitoring wells must be installed by a licensed Monitoring Well Constructor and 

registered with the Oregon Water Resources Department (WRD) in accordance with OAR 690-240-0005 through 690-

240-0180 (Construction and Maintenance of Monitoring Wells and Other Holes in Oregon (WRD,-1995)). For 

information on these mles, contact the Water Resources Department at 503-378-8455. For additional guidance please 

refer to Groundwater Monitoring Well Drilling, Construction, and Decommissioning (DEQ, 1992). 

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C. Field Tests 

Include technical details for all field tests in your reports. Such tests include aquifer characterization tests as well as 

preliminary design/operational tests on pump-and-freat, vapor extraction, air stripper, bioremediation or other 

remediation systems. Include: 

• Details of test method procedures; 

• Reference to published articles describing chosen tests; 

• Reasons for choosing test methods used; 

• Methods used for analysis of data; 

• Numerical results of tests; and 

• Site maps showing location of equipment, resulting cones of depression, groundwater or soil vapor 

capture/extraction zones, and any other relevant details. 

If equations or graphs were used to arrive at the final results, be sure to include those equations or graphs (and their 

references) in the report. If computer software packages were used to obtain the results, provide appropriate references 

and rationale for chosen algorithms. 

IV. RESULTS 

Data gathering at UST cleanup sites is generally done for one or more ofthe following reasons: 

• To prove or disprove the presence of contamination; 

• To identify the nature ofthe contaminants; 

• To determine the magnitude and extent ofthe contamination; and 

To show changes/trends in contaminant levels over time. • 

When preparing the part of your report that discusses the results ofthe sample analyses, you should keep in mind the 

purpose(s) of your data so that you can focus your discussion. 

A. Presentation of Data 

The easiest way to present your data is to display it in tables. It is recommended that you present your data in a table 

or series of tables even when part or all of it is also displayed in some other form such as on maps or graphs. You 

should include historical data for each sampling point in tables. Tables are easy to use for a quick review of what was 

found at the site and any data frends over time. In addition to data tables, you should display key data elements 

visually (i.e., on maps). Always include one or several maps showing: 

Current sample results posted on site maps at the sample locations; 

Plume outline, and if data permits, water table elevation contours; 

Dissolved contaminant concentration contours; 

Approximate boundaries of contaminated area(s), including off-site contamination; 

Groundwater flow direction arrows; 

Lithologic cross-sections derived fi'om well logs or borings; 

Graphs of concentrations versus time; and 

A graph of concentration versus distance from the source area, along the plume centerline. 

When appropriate, include old and new data on the same maps or diagrams. Be sure to identify which values are from 

which sampling event. In some cases, a series of maps or charts showing changes over time may be the best way to 

make your point. The maps and graphs mentioned above will be invaluable in showing that groundwater plumes have 

stabilized. 

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If you intend to use commercial computer software packages to produce concenfration or elevation contours, be aware 

that they must be used with caution. You should examine such diagrams carefully to make sure that they are consistent 

with the available data. You may need to experiment with the algorithm, smoothing, grid spacing and other factors to 

show your data in a way that most reflects your interpretation ofthe sample data. The most common problem with 

such diagrams is extrapolating the data, that is, displaying estimated concentrations or elevations outside the area 

where data have been collected. 

B. Discussion and Analysis ofthe Results 

Although this may be the most important component of reports, it is bv far the most neglected 

component It is not enough to simply present the data collected at your site, you must also carefully 

analyze and discuss the meaning of the data. 

In the discussion and analysis section, you should: 

• Relate the soil and groundwater contamination to the known sources of contamination as well as to each other; 

• Specifically address the types ofpetroleum products released and the contaminants of concem which were tested 

for and found in the groundwater; 

• Relate groundwater contaminant plumes to direction and velocity of groundwater flow; 

• Show changes in water table elevation and discuss how those changes may have affected contaminant 

concentrations; 

• Discuss the currently known vertical and horizontal extent ofthe soil and groundwater contamination; and 

• Examine the data to determine if the known extent of contamination also appears to be the fiill extent of 

contamination. 

If there has been more than one sampling event at your site, you should also: 

• Provide a summary of ALL ofthe data that have been collected; 

• Discuss any trends in the data; 

• Relate measured trends to possible natural causes such as dilution by recharge or movement ofthe plume; and 

• If appropriate, relate measured trends to corrective actions taken. 

When you have completed this section ofthe report, review what you have written and make sure that the data support 

your position. For example, don't make comments about "fypical background levels" without providing either 

measurements of background values or properly-referenced data from an outside source. Also, don't state that 

biodegradation will eliminate the remaining contamination without specific evidence from your site. Finally, when 

you discuss trends in your data, make sure that vou can support your statements with graphs or statistics. 

V. CONCEPTUAL SHE MODEL 

You should begin work on the conceptual site model early in the investigation so that you can identify data gaps and 

collect information needed for risk-based decision making. After determining the current locations and levels of 

contamination at your site, you MUST evaluate the migration pathways and potential effects of this contamination. 

For this you must consider: 

A. Sources 

Discuss the fype of product(s) released including: 

• When and where the release occurred; 

• Media (e.g., soil, water) contaminated and contaminants of concem in each medium; 

• Distribution and concentration of contaminants in each medium; 

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• Chemical and physical properties; 

• Relevant components of the petroleum products that are likely to present a risk (e.g., benzene in gasoline); 

• Persistence (i.e., is it likely to evaporate or degrade right away or will it remain); and 

• Potential for migration. 

B. Exposure Pathways 

Humans can be exposed to toxic substances if they breathe them in, eat or drink them, or through contact with the 

skin. These exposure pathways are discussed in the document Risk-Based Decision Making for the Remediation of 

Petroleum-Contaminated Sites (DEQ, 1999). You should provide site-specific information to support whether you 

included or excluded all standard pathways. Summarize existing data showing how far the contaminants have 

migrated both on- and off-site and use these in a discussion of: 

• How close they are to both surface and groundwater; 

• Groundwater and surface water discharge points; 

• Current and fiiture uses of groimdwater including results for well surveys or beneficial use studies; 

• The potential for the contaminants to continue migrating; 

• The potential exposure pathways and estimated concentrations; and 

• Whether an ecological risk assessment is needed for animals or plants. 

C. Receptors 

Having covered the nature and extent of contamination, discuss the populations that may be at risk from the 

contaminants at your site. Cover reasonably likely fiiture uses and include: 

• Information about the current uses of your site and adjacent properties; \ 

• Identification of wells within one mile of your site and their uses including not only wells listed with the 

Oregon Water Resources Department, but also wells found in field surveys, including such information as: 

• Well owner, address and map location; 

• Driller and date drilled; 

• Total depth ofthe well; 

• Reported or measured depth to water; 

• Casing and screen materials; 

• Screened interval; 

• Seal types, depths and intervals; 

• Static pumping levels; 

• Approximate land surface elevation; and 

• Reported water quality and use of well 

• The potential or actual adverse impacts on human receptors, ecosystems, natural resources, and the 

environment 

VI. CORRECTIVE ACTION MEASURES 

You must include this section ofthe report in all corrective action plans prepared under OAR 340-122-0250. In it you 

must identify actions to protect public health, safefy, welfare and the environment from the release of contaminants at 

your site. Although CAPs must also include the other sections listed in this outiine, in most cases the detailed information 

required for those sections will already have been covered in previous reports and you will only need to summarize it as 

appropriate for the CAP. However, if you have carried out fiirther investigations since the last report, discuss these in 

detail in the appropriate sections ofthe CAP. In this section, be sure to cover each ofthe following topics: 

A. Cleanup Options 

Discuss the cleanup options you considered for this site. Such options may include: 

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Soil excavation and treatment or disposal; 

In-place soil treatment, either active or passive (e.g., natural degradation with monitoring); 

Free product recovery; 

Groundwater removal and treatment; 

Groundwater gradient control; 

Vapor control measures; 

Replacing the drinking water supply; and 

Relocating the resident(s). 

B. Contaminants of Concem and Risk-Based Concentrations 

You should include risk-based concenfrations for all applicable pathways at the site and a thorough justification, 

including modeling or calculation results, for any site-specific risk-based concenfrations. If you have carried out sitespecific modeling, you should include either in this section or in an appendix at the end ofthe report: 

• The name arui description ofall models used for your calculations; 

• A brief discussion of why the models are appropriate for your site-specific calculation; 

• A table listing all ofthe input values that vou used when running the models; 

• A brief explanation as to where you obtained the input values and why you chose each one — these will typically 

fall into one qf three categories: 

(I.) site-specific data, 

(2.) laboratory data, or 

(3.) estimates fi-om scientific literature; 

• A discussion ofthe sensitivity ofthe model to the input values and what ranges of data you may have tried before 

settling on your final set; and 

• A discussion ofthe uncertainty in the model input values. 

It is usually much better to show the range of options you fried when experimenting with the modeling than to just 

present one final result. This makes it easier to follow your modeling logic. 

For groundwater contaminants, include specific information about: 

• Each ofthe detected contaminants of concern; and 

• The compliance points where the risk-based concentrations will be attained. 

C. Cleanup Actions Alreadv Taken 

It is important to remember that you are not only allowed, but also encouraged to perform cleanup activities to reduce 

the spread of contaminants even before the CAP has been submitted or approved. This may be done as long as you 

notify DEQ about such activities, comply with any conditions that DEQ may impose, and incorporate the cleanup 

measures taken into your CAP. Therefore, the corrective actions discussed in your CAP should not simply be brief 

theoretical summaries of what might be done. Your report should cover what you have already done in addition to any 

future actions that you are proposing for the site (see next section). Include information related to: 

• Design, specifications and installation ofthe equipment being used; 

• Operational parameters such as pumping rates, flow rates, and discharge rates; 

• Location of recovery wells, vapor extraction systems; and 

• Reasons for choosing the items listed above (include discussion ofpreliminary data confirming the effectiveness of 

the remedial actions). 

D. Future Cleanup Activities 

Based on the current information about the system, discuss: 

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• Thepossibleneedfor expanding the system to completely capture the contaminant plume; . 

• Operational and maintenance needs ofthe system and how you will address them; 

• Planned monitoring activities to evaluate the effectiveness ofthe system; 

• . How you plan to analyze the data to prove that the cleanup levels appear to have been met and the system can be 

shut down; and 

• What monitoring you will do after the system has been shut down to confirm that final cleanup levels have been 

met at the site. 

Be sure to include necessary site maps, equipment diagrams and specifications, and relevant equations and 

calculations that confirm that your system has been designed and is operating correctly. 

VIL CONCLUSIONS 

You should always include in your report a section summarizing key findings and conclusions about the 

investigation/corrective action activities. When preparing this section, answer any of the following questions 

appropriate to your stage of investigation: 

Have you located and removed or remediated known sources ofthe contamination both on-site and off-site? 

Are there any remaining problems with vapors? 

Have you defined the full magnitude and extent of both soil and groundwater contamination? 

Are any ofthe contaminants still moving, and, if so, where to, and what are the potential impacts? 

Are the corrective actions producing the desired results ? 

Will you use any institutional or engineering controls to achieve closure? 

What is the compliance monitoring schedule? 

Will further work be needed? 

Note: A recommendation for "no further action" must be justified. If vou cannot support your recommendation, It will 

likely be rejected. 

If more work is needed, include: 

• Your, plans for further action; 

• A schedule of estimated dates for these activities; and 

• A proposed date for submitting the next report to the Department 

Vin. SUPPORTING DOCUMENTATION 

Be sure to attach appendices to your-report with relevant supporting documentation. Include such items as copies of: 

Laboratory data sheets; 

Chain of custody forms; 

Well start-cards; 

Water Resource Department well logs for existing wells in the vicinity ofthe site; 

Push probe/soil boring, monitoring well and test pit logs; 

Receipts for disposal of contaminated soil and/or water; 

Receipts for disposal of tanks and piping; 

Discharge permits or agreements with local waste-water treatment plants for disposal of contaminated water; 

Photographs; and 

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• Information on any fate and transport model used in the risk-based analysis of indoor/outdoor air, groundwater 

and surface water. 

DC. REFERENCES 

If your report refers to any previous reports, technical or scientific papers. Environmental Protection Agency guidance 

documents, or other outside documentation, you must include a separate section with complete bibliographic 

information including the names ofthe authors, publishers and publications as well as dates published and pages cited. 

These guidelines are Intended to be a summary ofthe topics most often covered when reporting typical activities 

at UST Cleanup sites. Specific topics not discussed will usually still fall into one of the categories covered 

above; you should treat them with a similar level of detail. It bears repeating that since this Information Is meant 

to apply to a wide variety of reports, not every comment will be appropriate for all reports. You will need to use 

vour best professional judgment In deciding what applies to a report on vour specific site. If you have questions, 

you should discuss them with the appropriate regional UST Cleanup project manager. 

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SECTION 3.2: EXAMPLE REPORTS AND OUTLINES 

As mentioned before, the report must fit the site and more complex sites will have more complex reports. Therefore, in 

a guidance document like this it is difficult to tell you exactly what you need to put in any specific report. Some 

reports, however, such as the 20-day report and the soil matrix report, are more sfraight forward and generally include 

the same information from site to site. To assist you with these reports, we have included in this section: 

• A four page "fill-in-the-blanks" 20Tday report that you can photocopy from this manual, fill in, and submit to 

fulfill that reporting requirement; and 

• An outline including a description ofthe fype of information that must be included in a soil matrix report. 

These reports can be found on the following pages. 

NOTE: The most current versions of UST and UST cleanup forms, including interactive forms that can be filled out 

right on the screen and then printed, can be found on DEO's Website at: http://www.deq.state.or.us/pubs/forms.htm. 

DEO recommends vou either use the interactive forms or download the most current versions to use. 

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Section 3.2.1: Initial (Twenfy Day) Report Form for UST Cleanup Projects 

This report is due twenty (20) days from the date ofthe release. 

DEQ USTC File No. 

DEQ Facility ID No. 

Site Name: -

Site Address: . 

INITIAL CLEANUP INFORMATION 

(1) Type of contamination (check all that apply): 

Gasoline Diesel Waste Oil Heating Oil 

Other (specify) 

(2) Estimate quantity of release (based on Information known to date): 

<100gal. 100-499 gal. 500-999 gal. 1,000-5.000 gal. >5,000gal. 

SITE INFORMATION (Circle N for "no" or Y for "yes") 

(3) N Y Did any water enter the excavation? If yes, please describe and Identify the depth to groundwater in 

feet below ground surface: \ 

(4) N Y Was a sheen or odor observed on any water in the excavation? 

Note: If groundwater Is encountered, soil samples from the soil/water Interface must be collected and analyzed for 

BTEX and by the appropriate TPH method. 

At sites where diesel or other non-gasoline products have been released, the water may also have to be screened or 

tested for polynuclear aromatic hydrocarbons (PAHs). Refer to OAR 340-122-0218. 

(5) N Y Was water pumped from the excavation? 

N Y If yes, did groundwater recharge within 24 hours after pumping? 

Please describe the pumping procedure and disposal option selected for the purged excavation water: 

(6) N Y Were there any water samples collected from the excavation? 

If yes, please describe: 

(7) N Y Have any soil and/or water sample results been received at this time? 

If so, please attach any lab reports. .-. , 

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IF GROUNDWATER HAS BEEN ENCOUNTERED, PLEASE ANSWER QUESTIONS #8-13, BELOW. 

IF NO WATER HAS BEEN ENCOUNTERED, PLEASE SKIP TO QUESTION #14 

(8) What are the known uses of groundwater within a 500-foot radius of the release site? 

non-use industrial agricultural drinking supply 

(9) If groundwater in this area is being used as a drinking water supply, please check the type and size of 

population served by the supply: 

Community (community well used for drinking water year round) 

size: <1,000 people 1,000 - 5,000 people >5,000 people 

Intermittent use (public water used for drinking water only on a part-time basis) 

size: <50 people 50 - 300 people > 300 people 

Private wells (Individual private well or wells used for drinking water) 

size: <10 people 10-25 people >25 people 

(10) N Y Is there any evidence this water supply has been or is likely to be impacted from the petroleum 

product release? If yes, estimate how difficult It would be to replace the existing supply: 

bottled water is the orily alternative 

on-site water treatment; bulk water delivery; new wells are available 

able to connect to existing water supply 

do not know what altematives would be available 

(11) N Y Are/were there any vapors present in on-site or nearby buildings? If yes: 

A. Are you monitoring and/or mitigating any potential fire and safety hazards posed by vapors 

and free product? Explain: 

B. Estimate the number of people potentially affected by vapors: 

1 -2 people 3-10 people > 10 people 

(12) N Y Are vapors or Is petroleum contamination present in the utility conidors? 

If yes, please explain: 

(13) N Y Are there natural areas within 1/4 mile of the site? If so, please describe types (parks, rivers, 

wetlands, sensitive habitats, etc.) and proximity: 

(14) N Y If groundwater was not encountered In the excavation, do you believe that this cleanup project can 

be conducted under the requirements for an UST Cleanup Matrix site? If yes, then refer to OAR 

340-122-0305 through 0360. 

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AREA/SITE CONDITIONS: 

(15) Mean annual rainfall; <20 Inches 20-45 Inches >45 inches 

(16) Soil type(s) of the naturally occumng soils, not the backfill around the tank: 

clays, compact tills, shales, and unfractured metamorphic and Igneous rocks 

sandy loams, loamy sands, silty clays, clay loams, moderately permeable limestone, dolomite, 

sandstones, moderately fractured Igneous and metamorphic rock 

fine and silty sands, sands and gravels, highly fractured igneous and metamorphic rock, 

permeable basalts and lavas, karst limestones and dolomites 

SOIL MANAGEMENT 

(17) If soil sample results have been received: 

N Y Will the level of contamination detected require removal of contaminated soil for treatment or 

disposal? 

(18) All contaminated soil temporarily stockpiled on-site prior to treatment or disposal must be contained within 

a benned area, kept covered, and the entire area secured to prevent unauthorized access by the public. If 

you haven't done this, please explain why: 

Note: It is a violation to stockpile petroleum contaminated soil (PCS) on-site for greater than 30 days 

without a DEQ Solid Waste Letter Authorization (SWLA) Permit. See Section 1.4: Permit Requirements for 

UST Cleanup Sites. 

(19) If contaminated soil is currently stockpiled on-site, please Indicate when disposal will occur or when 

treatment will begin: 

(20) Estimated volume of contaminated soil (specify tons or cubic yards): 

(21) Intended disposition of soils (please check one): 

On-site/off-site treatment. Solid Waste Letter Authorization Permit Application attached. 

Themnal treatment off-site at an authorized facility. 

Facility name: 

Landfill disposal. 

Name of Landfill: • • 

Note: Please attach additional information as necessary to explain any unusual circumstances associated 

with this project _ 

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This initial report is intended to provide the Department with the basic initial Information about activities associated with the 

release. Future reports should provide a more detailed and complete picture ofthe cleanup project. 

Please be aware that a DEQ pennit/authorization Is required for the following activities: 

1) Soil aeration, bioremediation (on-site or off-site), or on-site thermal treatment. 

2) Water discharges to a stream/stonn drain from the excavation or treatment tank. 

If these activities will be included in your cleanup project, contact the regional DEQ office for the appnapriate 

application forms, infonnation on pennit fees and guidance documents. 

THIS REPORT WAS PREPARED BY: 

Individual: Phone: J_ 

Company: 

Address: 

City: • \ State Zjp_ 

Please return this form to the regional office in which the site is located. ' 

Addresses and phone numbers for these offices can be found in Section 1.2: UST Program Offices. 

If you have questions, call the contact person in your regional office. 

REMINDER: For non-heating oU tanks, you must submit a UST Decommissioning/ 

Change-in-Service Report form and a UST Decommissioning Checklist to the appropriate 

regional office within 30 days ofthe UST decommissioning. 

See SECTION 4: FORMS USED FOR UST CLEANUP PROJECTS, for copies. 

Failure to do so can result in delays to your project and 

may result in continued billing for the tank permit fees. 

KEEP A COPY OF THIS REPORT FOR YOUR FACILITY RECORDS 

20-day Report Page 4 of 4 

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Section 3.2.2: Soil Matrix Report Guidance 

In general, matrix reports will not require the level of detail that must be included in many of the other reports 

submitted in compliance with the UST cleanup rules. However, the rules require that certain information be included 

in all matrix reports. Since a soil mafrix cleanup will not be considered complete until a report has been submitted and 

approved, it is important that such reports be properly prepared. This will help reduce the time that it takes for the 

Department to review and respond to your report. 

It is recommended that soil matrix reports be prepared as outlined below. 

I. All Mafrix reports should begin with a narrative section describing: 

A. How the release was discovered, what initial measures were taken to confrol the spread of contamination, 

what was observed when the tank was removed from the pit (odor, sheen, stained soils, holes in tank or lines, 

etc.); 

B. How the cleanup was done'and what was done with the contaminated soils and the decommissioned tank and 

piping (copies of receipts and other records related to this step should be included); 

C. Who collected the samples, how they were collected, stored and shipped to the laboratory; and 

D. Any unusual conditions or problems that were encountered. 

II. If there is any soil remaining at your site which contains contaminant levels in excess of mafrbc cleanup levels 

("pocket of contamination"), you must describe where it is located, why you left it, provide an estimate ofthe 

approximate volume and level of contamination, and list the concenfrations of any contaminants that may 

contribute to volatilization to indoor or outdoor air. 

Remember that you must have the Department's approval to leave such contamination at a matrix site. 

Therefore, this should be discussed while cleanup is in progress, not after the report has been submitted. 

III. If you encountered any water in the tank excavation(s), you must describe what you did with the water. If 

water retumed to the pit within 24 hours after pumping, you must sample the water and report the results to 

the Department. You should discuss the results of the tests in your report. Include a summary of any 

discussions that you had with the Department on this subject. 

IV. If your site contained any contamination associated with arelease from a waste-oil tank, you must provide the 

results of the special analytical tests required for such contamination, and discuss measures taken for 

removing and handling this contamination, or any decisions made by the Department regarding this 

contamination. The location and magnitude ofany remaining waste oil contamination must be specifically 

discussed. 

V. Include a detailed sketch of your site which is neatly drawn and clearly labeled to show: 

A. The location of buildings and other key features, both man-made and natural; 

B. The names ofadjacent sfreets and properties; 

C. The location of excavations including those that were for the removal of tanks and associated piping as well as 

those that were strictly for the removal of contaminated soils; 

D; The location of product storage tanks, lines and dispensers, including those that were decommissioned as well 

as those that remain on the site; 

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E. The locations from which soil and water samples were collected. These locations should be marked with 

identifying sample numbers that correspond to the numbers used in tables and laboratory data refX)rts. Be sure 

to clearly identify the locations associated with waste oil contamination.; and 

F. The location of any contaminated soil which exceeds matrix cleanup levels but which has been left with 

approval ofthe Department. 

VI. Include copies ofthe completed mafrbc score sheet and checklist. These documents can be found in Section 

4.4: Soil Matrix Checklist and Score Sheet. 

VII. Include copies ofall laboratory data sheets for samples collected at the site plus copies ofthe chain-ofcustody forms. Also include copies of all receipts for the disposal of free product and/or sludges, 

contaminated soil and water, and decommissioned tanks and piping. 

A copy ofthe matrix report must be submitted to the appropriate regional office ofthe Department of Environmental 

Quality within 60 days of completing wori< at any matrix site. 

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SECTION 3.3: ANALYTICAL REQUIREMENTS 

The analytical requirements for UST cleanup sites have become more complex as the program has evolved from TPHbased soil matrix cleanups to constituent-based risk-based decision making. Also, the current rules provide you with a 

range of cleanup options, not all of which will have exactly the same requirements. Please refer to the overall 

sampling and analysis rule (OAR 340-122-0218) for the general requirements as well as to any specific information 

listed under your chosen cleanup option. This, section provides some additional discussion and guidance on the 

analytical requirements. 

3.3.1: General Comments 

Except for fairly small and simple cases, most UST cleanups will be carried out in phases. Different phases may have 

different purposes and, therefore, may require the use of different analytical methods. The methods will also depend 

upon the cleanup goals for your site. For example, during the initial site characterization it is helpfiil to collect a 

number of soil samples and test them for TPH to give you a quick and less expensive picture of how widespread the 

contamination is at your site and to identify the type(s) of product releeised. The TPH results may also be useful to 

direct a soil matrix cleanup on all or part of your site. However, site conditions may require you to go back and collect 

additional samples to test for constituents like BTEX, PAHs, lead, and MTBE. This information can help you 

construct a conceptual site model so you can base your cleanup levels and site closure on risk. You may choose to 

collect both kinds of samples at once to save the costs of a second sampling trip. That's up to you. In most cases, 

however, several sets of samples collected at different stages in the overall cleanup process will be required. 

3.3.2: Required Analytical Methods versus Simplified Field Tests 

When you collect a sample, there is one very important question to keep in mind: What is the purpose ofthe sample? 

Are you collecting it just to get an idea of where the contamination is located, or are you trying to get some data to 

show that your site meets the required cleanup levels for the cleanup option you have chosen? If it is the first case, 

then you mav use any sample collection and analytical procedures vou choose that will help you determine the extent 

of contamination (e.g., visual observations of staining, sheen, noticeable pefroleum odors). You may also use less 

expensive field methods that will give approximate results quickly and efficiently. It is only when you collect the data 

that you plan to use to demonsfrate that your site meets the cleanup levels that you must use the methods specified in 

OAR 340-122-0218 (see rule citation below). Note, however, that the results of all tests must be documented in 

reports submitted to the Department. 

OAR 340-122-218(1): "To streamline the investigation ofpetroleum UST release sites, a responsible person may 

use expedited site assessment methods (e.g., push probe samplers) for sample collection and analysis as long as 

all methods and results are documented In subsequent reports to the Department. However, samples used to 

demonstrate compliance with remediation levels must be collected and analyzed in accordance with this section." 

3.3.3: The Role of TPH Methods 

Although tests for total pefroleum hydrocarbons (TPH) are older and less specific than many ofthe analytical methods 

used for risk-based decision making, the results of these tests still serve two important purposes at UST cleanup sites: 

• They are used for determining the nature, magnitude, and extent of pefroleum product contamination, and 

should be used to help characterize your site even if you intend to propose a risk-based, low-impact site, or 

generic remedy closure; and 

• They are used for compliance purposes for any part of your site (soil only) that you decide to close under the 

soil matrix option (OAR 340-122-0320 through 340-122-0360). 

The rest of this section will discuss the use of TPH methods as applied to soil matrix closures. 

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When TPH tests are going to be used for compliance, then vou must use the TPH methods specified bv the 

Department. There are three TPH methods developed for your use under specific circumstances: 

• The Northwest Total Petroleum Hydrocarbon Identification test (Metiiod NWTPH-HCID) identifies the type 

of pefroleum contamination in the soil (i.e., is it gasoline, diesel, or heavier hydrocarbon products). 

After you use NWTPH-HCID to figure out what kind of product or products are present, then you apply one or both of 

the other two TPH tests (Methods NWTPH-Gx and NWTPH-Dx) to measure how much contamination is present. 

• NWTPH-Gx is used for volatile petroleum products such as aviation and automotive gasolines, mineral 

spirits, Stoddard solvent and naphtha. 

• NWTPH-Dx is used for semi-volatile pefroleum products such as jet fuels, kerosene, diesel oils, hydraulic 

fluids, mineral oils, lubricating oils, and fiael oils. 

This section describes when the NWTPH-HCID test must be used, and explains how to interpret the results of that test 

to make sure that the proper TPH tests are used at your site. A flow chart (see page 81) and several examples are also 

provided. Note that these TPH test methods are used not only at sites where there has been a reported release, but also 

at sites where tanks are being decommissioned and no release has been found. Therefore, you may have to collect 

different fypes of samples for the NWTPH-HCID test 

If you are working on the cleanup of a reported release, the NWTPH-HCID test must be performed on an obviously 

contaminated sample - the more contaminated, the better. The purpose of this sample is to identify the fype of 

contamination on the site. This sample will not be used to determine if cleanup levels have been met. If there is more 

than one separate area of contamination on the properfy, then at least one contaminated sample must be taken from 

each area and analyzed by Method NWTPH-HCID. 

If you are working on a routine tank decommissioning and there are no signs of a release, then you should run the 

NWTPH-HCID test on samples collected from the native soils below both ends ofthe tank to prove that the site is 

clean ("confirmatory samples"). 

Based on the results ofthe NWTPH-HCID tests, do one of tiie following: 

• If no release has been reported, the site appears clean, and Method NWTPH-HCID shows that there is no 

gasbline, no diesel or heating oil and related products, no Bunker C and related products and no waste oil, 

then it is not necessary to follow up with one ofthe other TPH methods. This is the only case where a "nondetect" by Method NWTPH-HCID may be used to confirm that your site is clean. In all other cases you will 

be required to use one ofthe other TPH tests on the samples taken to show that cleanup levels have been met. 

• If Method NWTPH-HCID shows that gasoline is present, but that diesel, heating oil. Bunker C, waste oil or 

other non-gasoline hydrocarbons are not present, then you must use th'e test Method NWTPH-Gx on samples 

taken to show that cleanup levels have been met. 

• If Method NWTPH-HCID shows that diesel or heating oil is present, but that gasoline is not present, then you 

must use the test Method NWTPH-Dx on samples taken to show that cleanup levels have been met. If heavier 

fractions such as Bunker C or waste oil- are present, or if a mixture of diesel or heating oil and heavier 

fractions are present, then you must also use Method NWTPH-Dx . 

• If Method NWTPH-HCID shows that both gasoline and diesel or heating oil or other non-gasoline 

hydrocarbons are present, then you must tun TPH tests for both types of product. That is, NWTPH-Gx must 

be run for gasoline and NWTPH-Dx must be.run for the non-gasoline components. 

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Remember that the purpose ofthe NWTPH-HCID test is to identify the type of contamination at your site and should 

be performed, whenever possible, on an obviously contaminated sample. The purpose of NWTPH-Gx and NWTPHDx is to measure how much contamination is present so that you can determine whether or not the soil remaining at 

the site meets the Department's soil cleanup levels. These tests should be performed on "confirmatory samples," that 

is, samples collected after you'think that the cleanup has been completed. 

The following examples illustrate some ofthe situations you may find when using the soil matrix option and how 

these different situations require use of different test methods. Although these examples do not cover all possible 

situations, they show how you should approach making decisions about what tests to request. 

Example 1: 

You are decommissioning a tank at a station where no release has been suspected or reported. When the tank is 

removed there are no obvious signs of a release. You complete the tank removal and take two confirmatory samples 

from the native soils below where the ends ofthe tank used to be. These samples are sent to the laboratory and tested 

by method NWTPH-HCID. 

Case A - The test results are: Sample 1 = ND 

Sample2 = ND 

No further tests are necessary if the detection limit is less than 40 ppm. This is sufficient to show that the site is clean. 

Note: This is the ONLY situation where NWTPH-HCID results will be accepted to confirm that your site is 

clean. 

Case B - The test results are: Sample 1 = Gasoline 

Sample2 = ND 

This site must be reported to DEQ because a release of gasoline has been identified. You must now have Sample 1 

tested by Method NWTPH-Gx. 

Case Bl - The test result is: Sample 1=35 ppm TPH as gasoline. 

Since the contamination is beloW even the most stringent cleanup level for gasolme (40 ppm), no cleanup will usually 

be required. You don't have to determine a matrix score for this site, but you do have to send a mafrix report to DEQ. 

Case B2 - The test result is: Sample 1 = 100 ppm TPH as gasoline. 

Whether cleanup under the soil matrix option is required or not will depend on the matrix score ofthe site. Therefore, 

you must fill out a matrix score sheet, and compare your result to the appropriate gasoline value in the rules (OAR 

340-122-0335). For instance, if this is aLevel 1 or Level 2 site, cleanup would be required (since the 100 ppm TPH is 

greater than either the 40 ppm TPH gasoline allowed for Level 1 or the 80 ppm TPH gasoline allowed for Level 2). If 

this is a Level 3 site, cleanup would not be required. 

NOTES: 

If your site is like Case B except that the only contaminant is diesel, heating oil, or other heavier fuels, and gasoline is 

not present, then you would use a similar approach. The main difference is, since you are dealing with diesel or heavy 

oil contamination, you use Method NWTPH-Dx for measuring the concenfration ofthe fiiel in the soil. To determine 

-if cleanup levels have been met, compare the result to the appropriate diesel cleanup level in the rules. If the source of 

the contamination includes waste oil, or waste oil is suspected, then you must also perform exfra tests (solvents, 

leachable metals, and possibly PCBs). 

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For sites where the measured TPH levels exceed the required soil matrix cleanup levels, you may either clean up under 

the soil matrix option, or select one ofthe other remedial action options allowed under the UST cleanup rules. If you 

choose an altemative option (i.e., low-impact, risk-based, or a generic remedy), you may be able to close the site 

without meeting the TPH cleanup levels in the matrix score. Refer to OAR 340-122-0217 for more information about 

the other cleanup options. 

You may use a combination of cleanup options at your site, so you may be able to clean part of your site using the 

soil matrix option and the remaining part of your site under another ofthe allowable options. Refer to Section 3.5: 

How to Handle Sites With Multiple Cleanup Options for more information. 

Example 2: 

You are working at a site where a release has occurred and has been reported to DEQ. Several tanks have been 

removed from the pit and the soils are obviously contaminated. You collect one or more obviously contaminated 

samples from the pit to characterize the fypes of contaminants by having the lab test them by method NWTPH-HCID. 

Case A - The test result shows both gasoline and diesel. 

After the cleanup, you must collect at least two confirmatory samples (one per each 150 square feet) from the area that 

was contaminated. Each sample must be analyzed by both NWTPH-Gx and NWTPH-Dx. To comply with the mles, the 

results ofthe NWTPH-Gx tests must not exceed the appropriate gasoline cleanup level md the results ofthe NWTPH-Dx 

tests must not exceed the appropriate diesel cleanup level. 

Case B - The test result shows both diesel and heavy oil. 

After performing the cleanup, you must collect at least two confirmatory samples from the area that was contaminated. 

Each sample must be analyzed by NWTPH-Dx. The result must not exceed the diesel cleanup level. 

Example 3: 

You are cleaning up a site where several tanks have been removed. There are two distinct areas of contamination, one 

in the pit where the waste oil tank was removed and one in the pit where the product tanks were removed. You collect 

an obviously contaminated soil sample from each of these two locations. In addition to NWTPH-HCID for both 

samples, the sample from the waste oil pit must be analyzed for polynuclear aromatic hydrocarbons (PAHs), volatile 

chlorinated organic hydrocarbons (VOCs), and TCLP-metals (cadmium, chromium and lead). 

Case A - Tank pit NWTPH-HCID indicates only gasoline. 

Waste oil NWTPH-HCID indicates only 'lieavy" hydrocarbons (i.e., heavier than diesel). 

PAH, VOC and TCLP-metals tests are all negative. 

Cleanup of contamination should proceed in the usual fashion. After cleanup is complete, confirmatory samples from 

the waste oil location must be analyzed by Method NWTPH-Dx. The result must not exceed the diesel cleanup level. 

Confirmatory samples from the gasoline tank pit must be analyzed by Method NWTPH-Gx. The results must not 

exceed the gasoline cleanup level. 

Case B - Tank pit NWTPH-HCID indicates only gasoline. 

Waste oil NWTPH-HCID indicates only heavy hydrocarbons. 

One ofthe other waste oil tests detects non-pefroleum contaminants. 

If any of the additional waste oil tests (PAHs, VOCs, or TCLP-metals) show detectable levels of contaminants, you 

must report these results to DEQ. We suggest you discuss these results with the appropriate regional UST Cleanup 

project manager before you submit your mafrix report. Depending on the levels found, this site may require cleanup 

under another set of rules. You should, however, be able to proceed with the cleanup ofthe gasoline contamination 

since, in this example, it is not mixed with the other contaminants. After the gasoline contamination is cleaned up, take 

confirmatory samples and analyze them by Method NWTPH-Gx. 

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Example 4: 

You are working at a contaminated site where water has been found in the tank pit. You pump all the water from the 

pit into a holding tank. Whether or not water retums to the pit, you will have to collect a contaminated soil sample and 

run an NWTPH-HCID test to identify the fype of contaminants at the site. 

Case A - No water retums to the pit and after 24 hours the pit remains dry. 

Since water did not retum to the pitj you don't have to collect a water sample to comply with the Matrix rales. You 

should proceed with the Mafrix cleanup and sampling as discussed in previous examples. The results ofthe NWTPHHCID test will determine what tests to use for the confirmatory samples. 

Case B - You see water immediately returning to the tank pit. In only about four hours there is enough water for 

you to easily collect a water sample. 

Since water is obviously returning to the pit, you must collect a fresh water sample as soon as possible rather than waiting for 

24 hours. You must analyze this sample for BTEX, MTBE and, if the release is from diesel or heavier products, also PAHs. 

You must also collect soil samples from the walls ofthe tank pit at the original soil/water interface and analyze these for 

BTEX as well as for TPH using the methods determined by the NWTPH-HCID test. You must report results of these tests 

and the DEQ will decide whether this site can continue under the soil matrix option, or whether investigation for 

groundwater contamination will be required. Even if groundwater contamination is detected, you may still choose to 

complete cleanup ofthe soil contamination using the matrix option. You would, however, also have to select another option 

for dealing with the groundwater contamination. 

Note: In all cases where water has been pumped from an excavation, you will still have to test the water to arrange 

for appropriate disposal. If you improperly dispose of contaminated water you may be assessed significant 

civil penalties. 

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Soil Matrix Sampling Decision Flowchart 

NO 

Report Release 

Collect CONTAMINTED 

Samples 

Run HCID (1) 

Clean Up Site 

Collect Confinnatory 

Samples 

TPH Test (2) 

NO 

YES 

Report Release 

Run Proper 

TPH Test (1), (2) 

YES 

Submit 

Matrix Report 

(3) 

YES 

YES 

Collect Confimiatory 

Samples 

Run HCID 

No Additional Testing 

Submit Report • 

NOTES: 

(1) If water in pit or waste oil release, extra tests are required. 

(2) Proper test depends on results of HCID. 

(3) In some cases, DEQ may request more information or more work. 

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3.3.4: Constituent Analysis 

With the possible exception ofthe soil matrix option, you will not be basing most fmal cleanup decisions on TPH 

results alone. Rather, you will need to coUect data on a large number of individual pefroleum constituents such as 

BTEX, trimethylbenzenes, PAHs, MTBE, and other constituents. Therefore, we recommend that even in the early 

stages of your investigation where you may be focusing on TPH, you should consider having some ofthe worst TPH 

samples sent off for additional constituent analysis. Not every sample will need this so you should talk to your 

laboratory about how many samples should be given additional tests. 

The additional tests that you run on these samples — both soil and water — will depend on a number of factors 

including the fype(s) of product released as well as the age ofthe release. At newer stations that have never sold 

leaded products, it will not be necessary to test for lead, ethylene dibromide (EDB) or ethylene dichloride (EDC). If 

only diesel has been released, it may not be necessary to test for MTBE. The NWTPH-HCID test along with some 

knowledge ofthe station history can help you decide what fype of product you are dealing with and what fypes of tests 

are the most appropriate. If contamination is from both gasoline and diesel, you will probably need to test for the full 

suite of BTEX, frimethylbenzenes, PAHs, and MTBE. If there is any evidence of a release from a waste oil tank, you 

may also have to test for chlorinated solvents, leachable metals, and, in some cases, PCBs. 

The rales do not require you to test all of these constituents at all sites, but put the burden on you to test "for all 

reasonably-likely contaminants of concem relevant to the pefroleum released, the age ofthe release, and the medium 

contaminated taking into accoimt appropriate remediation levels" (OAR 340-122-0218(l)(b)). We recommend that 

you refer to Table 2.1 in Risk-Based Decision Making for the Remediation of Petroleum-Contaminated Sites (DEQ, 

September 22, 2003) for some suggestions on what to test for based on the fype of product released. Table 2.2 in that 

same document lists the appropriate analytical methods that you can use to test for the various groups of constituents. 

Note: There are two important points to keep in mind regarding analytical methods. Both are covered In OAR 

340-122-0218 and relate to the fact that as time passes, both analytical methods and petroleum products 

change. 

(1) We may accept altemative sampling and analytical methods that have been shown to be appropriate forthe 

contaminants of concern and the media of Interest, and that have acceptable quality control measures, and 

limits of detection. As new methods come along — especially If they are faster and less expensive — you may 

propose to use them as long as they are of acceptable quality. You should always consult with us before 

applying any new method that Is not listed in the rules. 

(2) We may request additional tests if site-specific conditions wan-ant additional information. As new additives 

come along or new toxicological Information is available, we may decide that we need information on a few 

additional compounds before a decision can be made. Likewise, some compounds or tests may be dropped 

from the list. 

The main Idea is to try to keep in mind what compounds are likely to be there and what subset of those 

compounds are likely to be the ones that could produce unacceptable risk. 

3.3.5: Contaminants of Concern 

This topic is discussed in much more detail in Risk-Based Decision Making for the Remediation of PetroleumContaminated Sites (DEQ, September 22, 2003). However, it is worth reminding you here that any pefroleumcontaminated site will have hundreds to thousands of different chemical constituents dispersed in the soil and 

groundwater. It is not your job to try to analyze all of them. Your goal is to try to determine the concentration of a 

relatively small group of compounds in pefroleum that are currently known to be toxic and to decide if they may 

produce unacceptable risk at your site. The group of compounds that create an unacceptable risk is often called the 

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contaminants of concem (COCs). These are the compounds that you need to focus on when planning a remedy for 

your site. 

3.3.6: Detection Limits versus RBCs 

When you get data back from a laboratory you should do more than just look at the sample results. It is always a good 

idea to examine the detection limits and the qualify assurance and qualify confrol samples that the lab has ran (such as 

sample blanks and standards). If you have questions about these factors you should contact your laboratory. 

There are some cases where the risk-based concenfration for a particular constituent is lower than can be detected by 

fypical analytical methods. In that case, a "non-detect" will be considered acceptable proof that the contaminant is not 

present even though the detection limit is above the RBC. In other words, you are not required to try to find special 

methods to lower the detection limit below commonly achievable limits. In some cases, however, the detection limit of 

a sample may be unusually high. This often occurs when the sample is highly contaminated. You should check with 

your lab about methods that they could use to clean up the sample in order to reduce the detection limit to within an 

acceptable range. 

3.3.7: Analytical Method Questions and Answers 

The following questions and answers are included to help explain some specific matters related to analytical methods 

that cannot be covered under the fypes of general discussions covered in the previous sections. For additional general 

questions and answers about the UST cleanup rales please refer to Section 3.8: Answers to Common UST Cleanup 

Questions on page 93. 

I'm planning to use risk-based concentrations for the cleanup levels at my site. Is there any reason to also 

test some of the samples for TPH? 

Yes. TPH tests are needed to determine the nature, magnitude, and extent of pefroleum contamination at your 

site. You should use NWTPH-HCID to identify tiie product, and NWTPH-G and/or NWTPH-D to determine 

where it is located and measure how much is present. This must be documented even in cases where riskbased decision making is used to set appropriate cleanup levels for your site. 

I have noticed that the Department's Table of RBCs lists screening values for several compounds, such as 

1,2,4-trimethylbenzene, that we have not been asked to test for in the past. Why have these compounds 

been added? 

As mentioned earlier, the rales allow us to request additional tests if site-specific conditions warrant 

additional information. During the development ofthe Table of RBCs and the implementation of risk-based 

decision making. Department staff identified additional contaminants that have frequentiy been encountered 

at UST cleanup sites and have sufficient toxicify to warrant evaluation. To provide for these situations, we 

developed RBCs for four additional pefroleum constituents: 1,2,4-trimethylbenzene; 1,3,5-trimethylbenzene; 

n-propylbenzene; and iso-propylbenzene. These compounds are included on a fiill Method 8260 report along 

with many ofthe other potential contaminants of concem that we are seeking. 

if MTBE is not detected in groundwater, is it necessary to analyze for it in soil? Conversely, I would not be 

comfortable m simply analyzing for MTBE in soil (lets say it was ND in soil) at a groundwater impact site. 

Depending on the site, it may be sufficient to screen out MTBE by only testing for it in groundwater. If 

present, however, we may need soil samples to complete the evaluation of certain risk pathways. Since MTBE 

is included in a Method 8260 analysis, which is often used at UST sites to cover a wide range of other 

pefroleum and non-pefroleum contaminants, using this method would give you the data you need. 

UST Cleanup Manual 83 May 2009 
^ Oregon Department of Environmental Quality - Underground Storage Tank Program 

If lead is not detected in soil samples at a site with groundwater contamination, should groundwater 

samples be analyzed for lead? 

The answer depends on the fype of product and age ofthe release. At newer sites that have never handled 

leaded gasoline products you would not be required to test for lead at all. At older sites where leaded products 

may have been released, we do ask for a filtered water sample to be tested for lead. 

The trend has been that DEQ asks the consultant to analyze the "hottest" soil (i.e., the soil likely to have the 

highest concentrations). The problem is that with high BTEX concentrations come higher detection limits, 

and as a result, it is difficult to determine if concentrations of EDB and EDC really meet screening values. 

Would it be better to use groundwater as a screen for these constituents, at least at groundwater impact 

sites? 

There will be sites where what you are proposing is probably the best solution to the problem. However, the 

UST cleanup rules state that "samples of all affected media must be analyzed for reasonably-likely 

contaminants of concem..." (OAR 340-122-0240(l)(c)). Therefore, you have to make the best choice forthe 

conditions at your site. We do recognize that some contaminants are more likely to be found in groundwater 

than in soil and would take that into account when reviewing the data. The proximify ofthe contaminated soil 

to the groundwater would also be taken into account. ' 

Would DEQ please clarify the dates they believe that additives (EDB, EDC, and MTBE) were 

introduced/removed from Oregon's petroleum market to assist in the selection of constituent analyses. 

MTBE and other alcohols were first infroduced as gasoline additives in the mid to late 70's. According to 

EPA, their use significantly increased in 1979. Though not formalized in policy, the UST program considers 

1975 as the cutoff year for MTBE. Gasoline releases after that date should be tested for MTBE. EDB and 

EDC were used as lead scavengers in leaded gasolines. They should be tested at sites where releases of leaded 

gasoline are suspected. 

With the methods that you reference for EDB and EDC (8021 and 8260) the reporting limits, especially in 

the case where there are high levels of hydrocarbons, are quite different. How should the consultant 

determine the method to use? Many times, 8260 is used, but the reporting limits are several orders of 

magnitude over the risk-based concentration. 

When there is a choice of analytical methods, the RBC must be taken into account when deciding which 

method to apply. If no method is able to meet the risk criteria, then the method with the lowest detection limit 

should be used. The consultant should be working with an experienced laboratory for guidance. When 

possible, sufficiently low detection limits should be applied to determine the occurrence and magnitude of 

contaminants at a UST site. 

Method 8270 for PAHs has reporting levels at 100-160 ppb for soil, and 5-10 ppb for water. These levels 

are significantly higher than useful when compared to the Table of RBCs. My concern is that consultants 

may select on the basis of price and not consider detection limits. 

As the comment indicates, the reporting levels for Method 8270 are often not low enough to determine if 

PAH concenfrations are below the RBCs. In that case, labs can apply 8270 SIM modified or 8310 using 

HPLC to get better detection levels. You should work closely with your laboratory when dealing with matters 

of detection limits. 

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With respect to many of the organic compounds in 8260 or 8021, reaching the reporting limit required for 

cleanup can be difficult, especially on highly contaminated samples, in some cases, especially where 8260 

is used, with interferences commonly found in petroleum sites, the reporting limits are not reached for 

RBCs. What should be done in this case? 

There are numerous cleanup techniques available to help, but even they are not always adequate. There will 

be cases where the best analytical method and cleanup combination will still have reporting limits that are 

higher than the RBCs. In those cases, non-detects will usually have to suffice. These situations should be 

explained in the report that you submit to the Department that includes the relevant data. 

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SECTION 3.4: SITE CONTROLS 

The option of using site controls as a remedy at UST cleanup sites was made possible through legislative and rule 

changes in 1995 and 1998, respectively. These changes allow you to "manage risks" from contamination as an 

altemative to cleaning up the site to appropriate risk-based concenfrations. 

There are two kinds of site confrols — institutional confrols and engineering confrols. Both are meant to eliminate 

risks to human health and the environment. 

• An institutional control is a legal mechanism that resfricts activities on or around a contaminated site. An 

example of an institutional confrol is a deed restriction prohibiting well consfruction and use of groundwater 

at a site where contaminant levels in groimdwater exceed health-based cleanup levels. 

• An engineering control eliminates risks by using a mechanical system to trap, freat, isolate, dilute, or vent off 

contamination. An example of an engineering confrol is pavement used as a cap over contaminated soil as a 

means of isolating the soil from human contact. 

If you want to use site confrols at an UST cleanup site, you must make that proposal in a CAP.'^ To substitute site 

controls for cleanup, you must demonsfrate that the confrols you propose will reduce human health risks from 

individual cancer-causing contaminants to below a 1 x 10"* excess cancer risk or, for non-cancer causing 

contaminants, to below a hazard quotient (HQ) of 1. You must include enough discussion to show how all risks are 

avoided over time and under all fypical circumstances. You might do this through modeling or testing. For DEQ to 

approve the use of site confrols, they must be sufficiently protective, adequately maintained,, and legally enforceable. 

In addition, your proposal to use site confrols is subject to public notice requirements as part ofthe CAP document. 

Every site control must have a corresponding site restriction to ensure that the confrol is properly maintained. In many 

cases this is handled with an "equitable easement and servitude" (ESE, more commonly referred to as a "deed 

' restriction"). The ESE is attached to the properfy deed and recorded by the appropriate counfy. Recording the deed 

restriction with the counfy ensures that all future owners ofthe properfy are aware of contamination issues, potential 

restrictioris on properfy use, and the need to maintain the controls. In some cases the restriction is written into the no 

further action (NFA) letter in lieu of using an ESE. / 

Note: Institutional and engineering controls may not permanently encumber a property. If future sampling at the site 

were to show that contaminant levels had subsided to below risk-based concentrations, this would allow 

unrestricted use ofthe property, and the deed restriction could be removed. 

For more information, please refer to Guidance for Use of Institutional Controls (DEQ, 1998). 

'^ Provisions are made for site controls under the low-impact site rule (OAR 340-122-0243) as well, but they are more 

restrictive. Refer to Guidance for Applying the Low-Impact Site Rule to UST Cleanup Sites, DEQ (January 2008). 

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SECTION 3.5: How TO HANDLE SITES WITH MULTIPLE CLEANUP OPTIONS 

In addition to providing a number of options for cleaning up petroleum-contaminated sites, the latest version ofthe 

UST cleanup rules (effective November 2,1998) also specifically allows you to use any combination ofthe following 

three options on a single site (see OAR 340-122-0217( 1 )(d)(E)): 

• The soil mattix option (OAR 340-122-0320 through 340-122-0360) 

• Risk-based cleanup levels proposed under a corrective action plan (OAR 340-122-0244 and OAR 340-122-

0250); and/or 

• Any relevant generic remedy (OAR 340-122-0252). 

For example, you may have a site that has both soil and groundwater contamination. The level of contamination in the soil 

may be such that it could be cleaned up to the appropriate TPH level in the soil matrix option. Even though your site has. 

groundwater contamination, you could still choose to clean up the vadose zone soils using the soil matrix option. 

Obviously, you would also have to deal with the groundwater contamination since the soil mafrix option does not 

cover groundwater. You may find that with limited groundwater freatment or with only groundwater monitoring 

subsequent to the soil removal, that the groundwater at your site eventually meets either the generic or site-specific 

risk-based concentrations. At that point you would be able to close your site under a combination ofthe soil matrix 

option and the risk-based option. 

3.5.1: Reporting Requirements 

If there is a project manager assigned to your project, you may want to ask if they have any preferences for how to 

combine the reports when two options are used. Generally, the fmal report will need to include the minimum reporting 

requirements for each section. Using the example mentioned above, that means that the section that discusses the soil 

cleanup must include all ofthe reporting requirements of a soil matrix report, and the section that discusses groundwater. 

remediation must include all of reporting requirements of a risk based proposal under a corrective action plan. 

3.5.2: Public Participation 

Ifany ofthe options employed at your site require public participation, then such participation will be required for the 

project. So, for example, if you decide to use site-specific risk-based concenfrations for the groundwater 

contamination, then the public participation requirements of OAR 340-122-0260 would apply to the site. 

3.5.3: What about Low-Impact Sites? 

The low-impact site option (OAR 340-122-0243) was designed to be implemented in its entirefy at a site and therefore 

cannot be used with the other options. That does not mean, however, that if you decide to try the LIS option that you 

are trapped in that option. You always have the choice to move your project completely out ofthe LIS option and 

apply another option or set of options to it. For example, maybe you thought that you could close your site under the 

LIS option, but later found that it was going to be too difficult or expensive to meet the requirements. It may be that 

examination ofthe data would show that with a different level of effort you would be able to have your site meet the 

requirements of a risk-based closure. In that case you would simply abandon the LIS closure and proceed under the 

risk-based closure. 

3.5.4: Analytical Requirements 

Since not all ofthe options have exactly the same analytical requirements, moving from one option to another on part 

or all of your site might require you to go back and collect additional samples. That's just one ofthe factors that you 

will have to keep in mind when deciding on the best option or set of options to use for closing your site. In most cases, 

however, we feel that this additional flexibilify will be beneficial in the long run. 

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SECTION 3.6: HANDLING AND TREATING PETROLEUM-CONTAMINATED SOIL 

This guidance is designed to give an overview of options available for treating pefroleum-contaminated soils (PCS). 

3.6.1: General Information 

Before removing an underground storage tank (UST), you should look at the many factors involved in deciding what 

cleanup option to use. Planning will save you both time and money. 

When you find contamination, you must make some difficult decisions. Should cleanup begin immediately or is 

further investigation required? Should the contamination be removed or is it possible to freat it in-place? Will your 

business be unduly interrapted if soil freatment occurs on-site? Are there potential business implications, such as 

long-term liabilify, insurance requirements, and future salabilify ofthe properfy, etc. that should be considered when 

selecting the cleanup method? Because cleanups are complex and many options are available, the services of a 

qualified consultant are often useful when developing cleanup sfrategies other than simple removal of the 

contaminated soils. -

You should be aware that the Department will not be able to complete final review and closure on your cleanup 

project until freatment and reuse or disposal ofall contaminated soils has taken place. Since some options take longer 

to complete than others, this may also be a factor in your decision of how to handle the contaminated soil. 

This guidance gives several options for handling petroleum-contaminated soils, but some are more desirable than 

others are. From an environmental perspective, the Department sfrongly encourages you to select a freatment method 

that actually desfroys contamination rather than transferring it from one medium to another (e.g., from soil to air). In 

addition, effective freatment of soils will let you reuse the soil for other purposes (with some restrictions). The 

Department will look for careful justification if you propose to use an option which is environmentally less desirable. 

3.6.2: In-PIace Soil Treatment 

Many methods for cleaning up soil contamination in place, or "in situ," have been used successfully. Wjth in situ 

treatment, contaminated soils are not removed and such techniques as vapor exfraction and biological freatment may 

be used. Typically, in situ freatment can be expensive but becomes more cost effective when large amounts of 

contamination are present or would be difficult to remove. 

In situ freatment methods are primarily used with complex cleanup projects and often require that you submit a CAP. 

To properly prepare a CAP, you usually have to do extensive subsurface investigation to define the extent of the 

contamination. See Section 2.5: Summary of Each Rule and Section 3.1: Writing Cleanup Reports and Corrective 

Action Plans for more information on developing CAPs. Once you have determmed the full extent of the 

contamination, you can develop reasonable cleanup options. If you choose to pursue in situ soil freatment through a 

CAP, you should contact the DEQ regional office that has jurisdiction for your cleanup project to discuss the details of 

what will be required. 

3.6.3: Soil Removal 

If soil removal appears to be the best method for soil cleanup, you must decide how to manage the soils. Once the soils 

are removed from the pit, they can be taken to an authorized facilify for freatment or disposal or independentiy freated 

(by you or your consultant). If the soils are to be independentiy freated, you must take precautions to prevent adverse 

environmental impacts or nuisance conditions. -

You can stockpile contaminated soils only on a temporary basis while making arrangements for disposal or freatment. 

During this time, soils must be placed within a secure (e.g. fenced), lined, and bermed area and kept covered at all 

times. You have thirfy (30) days to either dispose ofthe soils at an authorized facilify or to obtain a solid waste 

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Oregon Department of Environmental Quality - Underground Storage Tank Program 

treatment permit from the Department (see Section 1.4: Permit Requirements for UST Cleanup Sites). Local 

jurisdictions may have different requirements for how - or if- soil treatment or stockpiling may occur. Check with 

local land use authorities before beginning any freatment to ensure that this is allowed at your site. 

3.6.3.1: Landfill Disposal - Ideally, no contaminated soils would be disposed of in a landfill since this results in the 

problem being moved from one location to another. Also, should there be problems with the landfill in the future, or if 

cleanup of the landfill should be required, persons who disposed of contaminated soil in the landfill may be held 

partially responsible for cleanup costs. However, until other disposal and freatment methods become readily available, 

landfill disposal may be the most cost-effective option for some cleanup projects. 

Individual landfills may have specific requirements you must meet before disposal is allowed. If landfill disposal is the 

option you choose, contact the landfill operator in advance - you may be able to coordinate sampling efforts to meet 

both landfill and Department requirements at the same time. 

3.6.3.2: Thermal Treatment ("Soil Cooker") - Thermal freatment is a better environmental solution than aeration or 

landfill disposal. It desfroys the contaminants rather than fransferring them to air or possibly to landfill leachate. This 

freatment method may reduce your future liabilify for the contaminated soils (the "cradle-to-grave" philosophy). 

Contaminated soil can be treated on site using a mobile unit or can be transported to a stationary facilify. 

3.6.3.2.1: Mobile Unit - A mobile unit is especially useful for sites that are far from a permanent thermal freatment 

facilify or a landfill. It may save or reduce costs of hauling the contaminated soil. However, you must ensure that your 

treatment site is suitable for the freatment equipment. You will need to contact local land use authorities to make sure 

this activify is allowed on your site. You must give specific information about the use of the mobile unit to the 

Department. A solid waste permit from the Department is required (see Section 1.4: Permit Requirements for UST 

Cleanup Sites). There are some restrictions on how the treated soil can be reused. Contact your regional DEQ office 

for more information. 

3.6.3.2.2: Permanent Facility - A permanent facilify operates similarly to a landfill from a "user" perspective. You 

must tell the facilify where the contaminated soils came from and provide contamination levels. Once your application 

has been approved, you take the contaminated soils to the facilify for processing. Your involvement is then over, 

unless you make arrangements to reuse the freated soil. Contact the specific facilities for more information on their 

requirements. 

3.6.3.3: Above-Ground Biological Treatment ("Bioremediation") - This freatment method is excellent for gasoline 

contamination and works relatively well for diesel, waste oil, and other heavy hydrocarbon contamination which does 

not aerate readily. Since this freatment actually desfroys the contaminants, this method reduces long-term liabilify and 

is a better environmental solution than soil aeration or landfill disposal. However, unless you are freating a large 

amount of soil, bioremediation can be a relatively costly way to deal with contamination. The services of a qualified 

consultant are usually necessary to design an appropriate freatment system. A solid waste permit from the Department 

is required (see Section 1.4: Permit Requirements for UST Cleanup Sites). There are some resfrictions on how the 

freated soil can be reused. Contact your regional DEQ office for more information. 

3.6.3.4: Soil Aeration - In this method hydrocarbons evaporate into the atmosphere. For that reason it is not preferred 

environmentally. This fype of freatment releases hydrocarbons into the air, contributing to the formation of 

photochemical smog (ozone). Also, gasoline contains benzene, a carcinogen, which is also released into the air during 

aeration. Aeration works best for gasoline-contaminated soils. It has limited success with diesel or heavier 

hydrocarbons because of their low volatilify; for them, soil aeration is very slow or requires frequent maintenance 

(tilling, etc.) and often does not work at all. Aeration of gasoline-contaminated soils works best on sandy or silfy 

soils with low clay content, and is most effective in warm, dry weather. 

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While soil aeration may sometimes be a lower cost freatment option, it is by no means a "no cost" procedure. It involves 

more than just spreading or piling the soil and letting it sit The process requires the use of specific confrols to prevent 

other problems. Considerable work is needed to ensure that freatment is effective in reducing contaminant concenfrations 

to an acceptable level. Soil aeration should include active freatment measures such as tilling or using piping and pumps to 

push/pull air through the soil. The Department may not approve projects that involve the use of "passive aeration". A 

solid waste permit from the Department is required (see Section 1.4: Pemiit Requirements for UST Cleanup Sites). There 

are some restrictions on how the freated soil can be reused. Contact your regional DEQ office for more information. More 

details on how to conduct soil aeration are in the guidance document Treatment of Petroleum-Contaminated Soils (DEQ, 

June 2007). 

3.6.4: Summary 

Because treatment conditions for each site are unique, the specific requirements listed in this document may be more 

or less stringent than what is actually needed for your site. Careful coordination and prior approval from your local 

DEQ regional office at specific points in the freatment process is exfremely important. You must coordinate soil 

freatment activities with the Department throughout the project and receive approval before moving any contaminated or 

freated soils off-site. Regardless ofthe freatment methods, there are some resfrictions on how you can reuse the freated 

soil. Contact your regional DEQ office for more information. 

Note: The Department will not make a final determination that "no further action is required" for the entire cleanup 

project until you have adequately addressed and documented all details regarding the treated soils. 

Direct all questions about specific treatment projects, permit requirements and/or fonns to the regional office that 

has jurisdiction for the cleanup project associated with your soil treatment plan. See Section 1.2: UST Program Offices 

for office locations and phone numbers. 

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SECTION 3.7: SAMPLE CALCULATIONS FOR AIR EMISSIONS 

As discussed in Section 1.4: Permit Requirements for UST Cleanup Sites, you must give us prior notice if your 

proposed method of cleanup will produce emissions to air (such as air sfrippers or vapor exfraction systems). You 

must also calculate the system's emission rate to determine if you will be required to obtain an Air Qualify Permit. 

Although most UST remediation systems will not exceed the limits necessary for a permit, many of these systems do 

have the potential of causing nuisance conditions or impacting the health and safefy of individuals working or residing 

in the vicinify of the site. Therefore, we also ask that you evaluate potential human health risks resulting from 

exposure to hazardous air pollutants discharged from your remediation system. This section provides you with an 

example of how you can use your air sample data to make these calculations. 

3.7.1 Conversion Factors 

Analytical Resuh Conversions 

To convert air sample results reported in parts per million by volume (ppmv) to milligrams per cubic meter (mg/m^) 

for any ofthe compounds listed in the table below, simply multiply the ppmv result by the given factor'^. 

Compound 

Benzene 

Toluene 

Ethylbenzene 

Xylenes 

Trimethylbenzenes 

TPH-G^" 

To obtain an air concentration in mg/m', 

multiply the air concentration in ppmv by 

the following number. 

3.25 (mg/m^ppmv 

3.83 

4.40 

4.40 

4.99 

4.16 

Example: If an air sample is reported to contain 2.5 ppmv of benzene, the concenfration in mg/m will be 

2.5 ppmv benzene x 3.25 (mg/m^)/ppmv = 8.1 mg/m^ benzene 

Volume and Mass Conversions 

1 cubic meter (m^) = 0.0283 cubic feet (ft^) 

Im^ =1000 liters (L) 

lgram(g) = 1000 milligrams (mg) 

1 mg = 1000 micrograms (p-g) 

1 pound (lb) = 454 g 

'^ The full conversion equation is: Concentration (mg/m^) = (ppmv x compound molecular weight in g/mol) / 24.055, where 

24.055 is the product ofthe ideal gas law constant (0.0821 L-atm/K-mol) and an assumed temperature of 20 degrees C 

(293 K). Therefore, the factors listed in the table are derived by dividing the compound molecular weight by 24.055. 

''' Heptane (MW = 100 g/mol) is used as a surrogate for gasoline in the calculation for TPH-G. 

UST Cleanup Manual 91 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

3.7.2: Example Calculation 

Problem: You have installed a soil vapor exfraction system on your site that uses a 200 cubic feet per minute (cfin) 

blower to discharge the vapors. A sample of air from your system is found to contain a benzene concentration of 15.5 

ppmv and a TPH-G concenfration of 5048 ppmv. Calculate the pounds of benzene and TPH-G'' discharged daily. 

Does the concenfration of benzene being emitted from your system exceed the acceptable risk-based air concentration 

for benzene of 0.30 i^g/m^? 

Solution 

First use the conversion factors in the table to convert the concentration to mg/m^. 

Benzene concenfration = 15.5 ppmv x 3.25 (mg/m^)/ppmv = 50.4 mg/m' 

TPH-G concenfration = 5,048 ppmv x 4.16 (mg/m')/ppmy = 21,000 mg/m' 

Next, determine the total volume of air discharged in one day. 

Volume of air discharged = 200 ft^/min x 0.0283 m'/ft' x 1440min/day = 8150mVday 

Finally, multiply the above answers and convert from grams to pounds to obtain the desired: emission rates. 

Mass of Benzene Discharged = 8150m'/day x 50.4 mg/m' x 1 g/l,000mg x 1 lb/454 g 

= 0.9 lb/day 

Mass of TPH Discharged = 8150 m'/day x 21,000 mg/m' x 1 g/1,000 mg x 1 lb/454 g 

= 376 lb/day 

Note that in the first step you calculated a benzene concentration of 50.4 mg/m'. If you convert this to pg/m' you can 

compare the result to the risk-based standard of 0.30 ng/m'. 

50.4 mg/m' X 1000 pg/mg = 50,400 jig/m' 

It should not be too surprising to see that discharge concentrations from a treatment system are often well in excess of 

risk-based standards. What we have not taken into account in this example is mixing ofthe emissions with ambient 

air, which causes the concenfrations to drop. You may need to estimate the on-site or off-site air concenfrations by 

using an air discharge model, or by collecting ambient air samples. When designing your system it is also very 

important to consider the location and height of emission stacks. This can have a significant impact on the potential for 

such emissions to create nuisance or health risk conditions and should be discussed with the regional project manager 

assigned to your site. 

The TPH-G measurement is used to represent the total volatile organic carbons (VOCs) being emitted 

UST Cleanup Manual 92 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 3.8: ANSWERS TO COMMON UST CLEANUP QUESTIONS 

For additional questions and answers please refer to Section 3.3.7: Analytical Method Questions and Answers 

on page 83. 

I started my project before the Department made the latest changes to the cleanup rules. Do I have to 

follow the old set of rules or the new set? 

That depends on where you are in your project. In general, if you are still in the early stages of a project you 

should switch to the new rules. However, if you are already working under an approved cleanup plan, you 

may continue under the old rales. See Section 1.3: Transition Policy for Ongoing UST Cleanup Projects for 

additional details. 

Many UST sites have been assessed and are currently on long-term groundwater monitoring programs. 

Many ofthe analytical data collected from soil samples at these sites are TPH quantifications and are not 

constituent specific. Will these sites be considered for risk-based closures (such as low impact) without the 

extra cost of going out to collect additional soil samples for constituent-specific analysis? 

A blanket statement cannot be made about how to handle these sites. In some cases additional soils samples 

will probably be required to assess certain soil-related risk pathways. Other sites may not have any soil 

pathways that need to be addressed. The decision regarding additional samples will depend on the conceptual 

model for the site. 

Note also that under the UST Program's Transition Policy for Ongoing USTCIeanup Projects, sites "which 

were operating under a Department-approved cleanup plan prior to 11 /2/98 may continue under the approved 

plan including eventual closure based on cleanup levels and requirements in effect at that time the plan was 

approved." Therefore, the past regulatory history ofthe site may also affect what is required. 

The way the new rules are written, it sounds like I can use a combination of cleanup options to complete my 

cleanup. Is that true? 

Yes. To summarize what is stated in OAR 340-122-0217(l)(d)(E), you may use any combination of three 

options — the soil matrix option, the risk-based option, and/or a generic remedy — to remediate any given 

site. The only option that cannot be used along with the others is the low-impact site option. That particular 

option has a special application and must be used in an "all or none" fashion. For more information see 

Section 3.5: How to Handle Sites With Multiple Cleanup Options: 

Who decides what cleanup option is best for my site? 

You should make this decision along with your consultant or confractor. Note that the decision may be made 

at several points in the cleanup process and you may change your approach as more information is gathered. 

If the release is obviously veryminor and resfricted to the soils, such as in a tank decommissioning, you may 

decide right away to go with the soil matrix option. In some cases, the decision on what cleanup approach to 

take may not be reached until initial response and abatement measures have been taken and investigative work 

shows the full extent of contamination.. 

Can 1 use any analytical methods other than those listed in the rules? 

Yes. During the site investigation you may use any method (e.g., visual, combustible gas indicators or other 

field instruments, etc.) to track and determine the extent of soil contamination. When you collect data to show 

that your site is in compliance with a given set of cleanup levels, then you must use the methods specified in 

OAR 340-122-0218. 

UST Cleanup Manual 93 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

Can I use the soil matrix option for waste oil contaminated soil? 

Maybe, but you must first analyze soils contaminated by releases of waste oil from USTs for polynuclear 

aromatic hydrocarbons, volatile aromatic solvents, and leachable metals (cadmium, chromium and lead) in 

addition to the usual tests for total petroleum hydrocarbons. If the waste oil tank was used for purposes other 

than exclusively storing automotive waste oils, then you must also analyze for polychlorinated biphenyls 

(PCBs). You should use a highly contaminated sample for these analyses. If it can be clearly shown that the 

only compounds present are petroleum products, then DEQ will usually allow the mafrix option for this soil. 

If chlorinated hydrocarbons or other non-pefroleum hazardous substances are present, it may be necessary to 

refer the project to another program in the Department's Environmental Cleanup Division to complete the 

cleanup. In most cases, you can still complete the cleanup of the petroleum contamination under the UST 

Cleanup rales. 

I removed contaminated soil from the tank pit. Can I just aerate it on my property and then put this soil back 

into the pit? > 

First ofall, you must obtain a Solid Waste Letter Authorization (SWLA) for on-site soil freatment. Refer to 

Section 1.4: Permit Requirements for UST Cleanup Sites for more information. If your properfy is an 

appropriate location'*, you may be allowed to freat it there under certain conditions. You will usually be 

allowed to freat such soils on-site for six months to one year. Stockpiling soils on-site for long periods of time 

without freatment is not allowed. After freatment, if proper sampling and testing show that TPH levels in the 

soil don't exceed the cleanup standard for that site, you may retum the soils to the pit. However, you may 

retum these soils only if you place them above the seasonal high water table mark, and also if you can still 

cover them with enough clean soil to prevent fiiture human contact. Department policy does not allow such 

soils to be reused in a 100-year flood plain. See also Section 3.6: Handling and Treating PefroleumContaminated Soil and Section 1.5: Policy for Reuse of Pefroleum Contaminated Soil. 

I am doing a tank decommissioning and everything looks completely clean. Do I still have to take samples? 

If so, what kind and how many? 

Yes, you are required to collect samples. The tank decommissioning rales (OAR 340-150-0130) require you 

to collect and analyze samples as specified in the soil mafrix option to demonstrate that the site was not 

contaminated with pefroleum products at the time ofthe decommissioning. 

What if my soil samples are found to contain some contamination but the levels are already below the 

required cleanup levels for the cleanup option that I have chosen? 

If Method NWTPH-HCID can detect your soil contaminants, you must report the release to DEQ. This is 

because OAR 340-122-0220(l)(a) requires you to report to DEQ all below-ground releases in any amount 

from a pefroleum UST within 24 hours after you discover them or confirm their presence through testing. 

However, if your investigation is complete and the data show that contaminant levels are already below the 

cleanup levels for your site, no cleanup will usually be necessary. 

'* By "appropriate " we mean that it is a location where the aeration ofthe petroleum-contaminated soil can be carried out 

without creating nuisance conditions or unacceptable risks, to human health, and can be monitored and tested as required in 

the SWLA permit 

UST Cleanup Manual 94 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

When the DEQ first came out with risk-based guidance in 1996, the generic standards forthe indoor air 

pathway were so low that they stopped many projects in their tracks. The numbers in the newer guidance 

document are much better, but there is still a lot of confusion about what to do for fieldwork to prove that 

the indoor air pathway is not really a threat? What do you suggest? 

Unfortunately, we are still trying to figure out the best approach for this situation. We have suggested and 

allowed soil gas monitoring and indoor air monitoring to help us figure out what is happening on a sitespecific basis. We have also used modeling to estimate exposures. (Please refer to Risk-Based Decision 

Making for the Remediation of Petroleum-Contaminated Sites (DEQ September 22, 2003) for more 

. information on modeling.) As of yet, however, we do not have a policy or guidance document on this topic. 

We are, however, working with Region 10 EPA on some fraining and hope to provide more information on 

this topic in the fiiture. In the meantime we will have to work with you on this matter on a case-by-case basis. 

What if I have a heating oil tank on my site? 

As of March 2000 heating oil tanks are covered by a different set of rales (OAR 340-177-0001 through 340-

177-0095) than those used for regulated UST cleanups. Licensed heating oil tank service providers now 

certify cleanups and decommissionings of heating oil tanks. The DEQ only audits the program to ensure that 

the work meets appropriate standards. If you have a question about heating oil tanks, you should leave a 

message along with your name and phone number on the Department's UST Helpline (1-800-742-7878, toll 

free in Oregon) and your call will be retumed. 

What if my site contains both heating oil and gasoline or other USTs and the contamination is intermingled? 

Will I have to report two separate releases and hire two different contractors? 

The Department prefers to freat such a mixed situation as a single site. Therefore, you will only need to report 

the release once and will only be issued a single project log number (see Section 1.1: How to Report an 

Underground Storage Tank Pefroleum Release). How the cleanup will be handled will usually depend on the 

conditions at your site. If gasoline or other non-heating oil contamination is the dominant problem, the entire 

site will probably be handled under the UST Cleanup Rules—the rales discussed in this guidance document. 

If the heating oil tank release is the dominant problem, then the site will probably be handled under the 

heating oil tank rales. You should discuss the preferred approach with the Department. 

UST Cleanup Manual 95 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 4: FORMS USED FOR UST CLEANUP PROJECTS 

This section contains several forms that you may wish to copy and use as needed on your UST cleanup projects. 

NOTE: The most current versions of UST and UST cleanup forms, including interactive forms that can be filled out 

right on the screen and then printed, can be found on DEO's Website at: http://w\\'w.deq.state.or.us/pubs./forms.htm. 

DEQ recommends you either use the interactive forms or download the most current versions to use. 

1. The three-page Petroleum Release Form is provided for your use on pages 97 through 99. You should feel free to 

photocopy these two pages, fill out the form, and fax it to the appropriate regional office as described in Section 1.1: 

How to Report an Underground Storage Tank Pefroleum Release. Please refer to that.section for more information. 

2. An example of a fypical Cost Recovery Agreement is included for your reference on pages 100 and 101. The 

regions usually send out copies of such an agreement in their original packet of information that gets mailed to all 

responsible parties reporting a release. To read more about our cost recovery program please see Section 1.7: Cost 

Recovery for Departmental Oversight Work. 

3. For non-heating oil tanks, you must submit a UST Decommissioning Checklist and Site Assessment Report form 

to the appropriate regional office. For your convenience a copy of this form is included on pages, 102 through 109. 

4. The soil matrix checklist (page 110) and score sheet (page 111) are provided to help you determine if the 

requirements ofthe soil mafrix rales have been met. Although this checklist is a good summary ofthe matrix, rale 

requirements, you should always refer to the rales themselves for the complete requirements ofeaeh step. To help you 

find the specific rale that applies to a particular item on this list, the rale number is given in parentheses. For example, 

if a particular item on this list is required by OAR 340-122-0320, then that item will include the reference number 

(0320). 

Please make sure that you can check off ALL ofthe items on this list BEFORE submitting your final report to DEQ. If 

an item on the list does not apply to your site, mark "N/A" on the line. For example, if you are not requesting 

permission to leave a small inaccessible pocket of soil contamination that exceeds the cleanup standards, then item 5 

would be marked "N/A". Omitting items that apply to your site will cause delays and may result in your having to 

retum to the site to do more work to complete the report. 

You are required by OAR 340-122-0360 to include a completed copy ofthe matrix checklist and the matrix score 

sheet as part of your soil matrix report. The soil matrix report must be submitted to DEQ within 60 days of completing 

a cleanup. 

UST Cleanup Manual 96 May 2009 
Oregon Department of Envirbnmental Quality - Underground Storage Tank Program 

SECTION 4.1 : PETROLEUM RELEASE FORM 

Page 1 of3 

Dcoortniwit of 

Envirorvnentai 

Quality 

UST PETROLEUM RELEASE FORM 

-INCIDENT INFORMATION-

(This Section for DEQ Use Only) 

LOG NUMBER; - -

RECEIVED BY: 

DATE REPORTED: (today's date) _ DATE DISCOVEREE>: 

SITE NAME: 

SITE ADDRESS: 

SITE CITY: 

n REGULATED UST & FAC NBR:. 

ZIP: D NON-REGULATED UST 

SITE COUNTY: PHONE: 

-MAIL CONTACTSREPORTED BY (required, person reporting tliis release to DEQ) RESPONSIBLE PARTY (required, person responsible for remedial action) 

NAME: ^ NAME: .__ 

COMPANY:. 

ADDRESS: _ 

CITY: 

COMPANY:. 

ADDRESS: 

ZIP; CITY: ZIP: 

STATE:. 

EMAIL; 

PHONE; STATE: 

EMAIL; 

PHONE; 

INVOICE CONTACT (required, may be same as responsible party) OTHER CONTACT(S) (Optional Information) 

NAME; NAME; 

COMPANY;. 

ADDRESS; _ 

CITY; 

STATE; 

ZIP; 

PHONE: 

COMPANY;. 

ADDRESS; _ 

CITY; 

STATE; 

ZIP: 

PHONE; 

CONTINUE ON NEXT PAGE 

UST Cleanup Manual 97 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

PETROLEUM RELEASE FORM 

Page 2 of3 

-SITE ASSESSMENT (For Cause and Source Descriptions - See Next Page) 

DISCOVERY: (cliecli one) CAUSE: (check one) ' SOURCE: (check one) CONFIRIVIATION: (check one) 

D DECOMMISSIONING D OVERFILL D TANK D CONTRACTOR 

D ROUTINEMONITORING D SPILL D PIPING , D RP REPORT 

D COMPLAINT n CORROSION D DISPENSER D STAFF DEQ 

D LEAK DETECTION D INSTALL PROBLEM D TURBINE PUMP D LAB DEQ 

D SITE ASSESSMENT D PHYSICAL/MECHANICAL DAMAGE D DELIVERY PROBLEM D LABRP 

D TIGHTNESS TEST D OTHER D OTHER D LAB OTHER 

D OTHER D UNKNOWN D OTHER 

-CONTAMINANTS (Select one or more)-

n HEATING OIL D UNLEADED GASOLINE D LEADED GASOLINE D MISCELLANEOUS GASOLINE 

D DIESEL MOTOR FUEL D WASTE OIL D LUBRICANT D SOLVENT 

n OTHER PET. DIST. D CHEMICAL D MTBE D UNKNOWN 

-IMPACTED MEDIA (Select one or more)-

D DRINKING WATER D GROUNDWATER D SURFACE WATER D SOIL D VAPORS D FREE PRODUCT 

-SITE-MANAGEMENT (This Section Department Use Only)-

RELEASE STOPPED; FINAL REQUEST INVOICE DATE: 

CLEANUP STARTED: NO FURTHER ACTION; 

NOTESyCOMMENTS; 

UST Cleanup Manual 98 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

Petroleum Release Form 

Page 3 of3 

CAUSE OF RELEASE DESCRIPTIONS 

Overfill - Use this cause when an overfill occurs. For example, overfills may occur from the fill pipe at the tank or when 

the nozzle fails to shut off at the dispenser. 

Spill - Use this cause when a spill occurs. For example, spills may occur when the delivery hose is disconnected from the 

fill pipe ofthe tank or when the nozzle is removed from the vehicle at the dispenser. 

Corrosion - Use this cause when a metal tank, piping or other component has a release due to corrosion (for steel, 

corrosiontakes the form of mst). This is a specific type of physical or mechanical damage. 

InstaUation Problem - Use this cause when the problem is determined to have occurred specifically because the 

underground storage tank system was not installed properly. Note that these problems may be difficult to determine. 

Physical or Mechanical Damage - Use this cause for all types of physical or mechanical damage except corrosion as 

described above. Some examples of physical or mechanical damage include a puncture ofthe tank or piping, loose 

fittings, broken components and components that have changed dimension (for example, elongation or swelling). 

Other - Use this option when the cause is known but does not fit into one ofthe above categories. For example, releases 

fi-om vent lines, vapor recovery lines and fill lines would be included in this category. 

Unknown - Use this option only when the cause is not knovm. 

SOURCE OF RELEASE DESCRIPTIONS 

Tank - This term means the tank that stores the product and is part ofthe underground storage tank system. 

Piping - This term means the piping and connectors mnning from the tank or submersible turbine pump to the dispenser 

or other end-use equipment. It does not include vent, vapor recovery or fill lines. 

Dispenser - This term includes the dispenser and equipmerit used to connect the dispenser to the piping. For example, a 

release from a suction pump or components above the shear valve would be considered a release fi-om the dispenser. 

Turbine Pump (STP) - This term includes the submersible turbine pump head (typically located in the tank sump), the 

line leak detector, and the piping that connects the submersible turbine pump to the tank. 

Delivery Problem - This term identifies releases that occur during product delivery to the tank. Typical causes 

associated with this source are spills and overfills. 

Other - Use this option when the release source does not fit into one ofthe above categories. For example, releases from 

vent lines, vapor recovery lines and fill lines would be included in this category. 

UST Cleanup Manual 99 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program • 

SECTION 4.2: COST RECOVERY AGREEMENT 

OREGON DEPARTMENT OF ENVIRONMENTAL QUALITY 

UNDERGROUND STORAGE TANK PROGRAM 

DEQ 

stateoioragon Cost RecovGry Agreement 

Department of 

Environmental 

Quality 

This document serves as an agreement between the undersigne;d (hereinafter "you") and the Department of 

Environmental Quality (DEQ) regarding DEQ review and oversight ofthe investigation and/or cleanup of 

petroleum (hazardous substances) at the property located at: 

Facility Name: 

Address: 

USTCNo.: 

DEQ agrees to review environmental documents submitted by you or on your behalf regarding the 

investigation and/or cleanup of the above-referenced site. Additional details regarding DEQ oversight will 

be established upon review ofthe initial site data. 

DEQ requires that persons requesting DEQ review and oversight of investigation and cleanup activities 

agree to the terms of this cost recovery agreement and pay project oversight costs. 

DEQ project oversight costs will include direct costs and indirect costs. Direct costs include site-specific 

expenses and legal costs. Indirect costs are those general management and support costs of the DEQ, 

including the Land Quality Division (LQ), allocable to DEQ oversight of this agreement and not charged as 

direct, site-specific costs. Indirect charges are based on a percentage of direct personal services costs. 

Review and oversight costs shall not include any unreasonable costs or costs not otherwise recoverable by 

DEQ under ORS 465.255. 

DEQ costs are due within thirty (30) days of issuance ofthe monthly statement, by a check made payable to 

the "Department ofEnvironmental Quality". Nine percent interest shall be charged on past due accounts. 

Electing not to enter into this agreement does not release you from any responsibility that you might have 

for any reporting requirements, investigation and/or cleanup of petroleum (hazardous substances) at the 

above referenced facility. This does not preclude the DEQ from conducting audits or inspections ofall or 

portions ofthe investigation and cleanup activities associated with this facility. Enforcement action may be 

initiated if any violation of Oregon Administrative Rules (OARs) or Oregon Revised Statutes (ORSs) is 

found. 

UST Cleanup Manual , 100 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program ^ ^ 

Cost Recovery Agreement i 

PageTwo 

Either DEQ or you may terminate this agreement by giving 15 days advance written notice to the. other. 

Only those costs incurred or obligated by DEQ prior to the effective date of any termination of the 

agreement shall be recoverable under this agreement. Termination of this agreement will not affect any other 

right DEQ may have for recovery of costs under any applicable law. 

You will hold DEQ harmless for any claims (including but not limited to claims of property damage or 

personal injury) arising from DEQ review and/or oversight activities under this agreement. 

This agreement is not and shall not be construed to be an admission by you ofany liability under ORS 

465.255 or any other law or as a waiver by you ofany defense to such liability. This agreement is not and 

shall not be construed to be a waiver, release, or settlement of claims that DEQ may have against you or any 

other responsible person nor is this agreement a waiver ofany enforcement authority that DEQ may have. 

The DEQ Tanks Program will be responsible for the review and oversight ofthe investigation and cleanup 

activities associated with the property. Please refer all site-specific inquiries to the UST Regional Offices in 

Northwest Region - Portland, Westem Region - Salem and Eugene and Eastem Region - The Dalles. For 

locations and phone numbers of the regional offices, please see the UST Regional Office list at 

http://www.deq.state.or.us/about/locations.htm 

All inquiries regarding cost recovery and/or invoices should be directed to Dawn Ismerio at 503-229-5812. 

If the terms of this agreement are acceptable, please have it executed by an authorized officer in the space 

provided below. In order to more effectively schedule your project, please retum this agreement within 30 

days of receipt to the regional office responsible for vour site. 

Accepted and agreed to this day of , 20 

By: 

Title: 

Please provide the following information as to where the invoices should be sent. 

Individual Name: . 

Title: 

Company Name:_ 

Mail Address:. 

City, State, Zip: 

Phone Number: 

UST Cleanup Manual 101 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 4.3: UST DECOMMISSIONING CHECKLIST AND SITE ASSESSMENT REPORT 

OREGON DEPARTMENT OF ENVIRONMENTAL QUALITY 

UNDERGROUND STORAGE TANK PROGRAM 

DEQ 

stamojomgm UNDERGROUND STORAGE TANK DECOMMISSIONING 

Environmentei CHECKLIST AND SiTE ASSESSMENT REPORT 

Quality 

A. FACILITY INFORMATION: 

This report MUST be submitted by the underground storage tank permittee or tank owner, or the licensed DEQ Service 

Provider on their behalf, within 30 days following completion ofthe tank decommissioning or change-in-service 

regardless of ongoing cleanup work. 

DEQ FACILITY NUMBER: 

FACILITY NAME: 

FACILITY ADDRESS: 

PERMITTEE PHONE: DATE: 

B. WORK PERFORMED BY: 

The checklist and site assessment report should be completed and signed by the DEQ licensed supervisor and signed by an 

executive officer ofthe DEQ licensed Service Provider on page 6. The tank owner or permittee must review and sign the 

report on page 6. NOTE: AN OWNER OR PERMITTEE MAY PERFORM UST SERVICES ONLY IF THEY 

HAVE TAKEN AND PASSED THE APPROPRIATE UST SUPERVISOR EXAMINATION OFFERED BY A 

NATIONAL TESTING SERVICE (SEE OAR 340-150-0156 for requirements). 

UST Cleanup Manual 102 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

DEO Service Provider's License #: 

Name: 

Telephone: 

Construction Contractors Board License #: 

DEO Decommissionine Supervisor's License #: 

Name: 

Telephone: 

DEO Soil Matrix Service Provider's License #: 

Name: 

Telephone: 

DEO Soil Matrix Supervisor's License #: 

Name: 

Telephone: 

(If applicable) 

(If applicable) 

C. DATES: 

Decommissioning/Change-in-Service Notice - Date Submitted: (30 days before work starts). 

Work Start Telephone Notice - Date Submitted: (3 working days before work starts). . 

DEQ Person Notified: 

Date Work Started: Date Work Completed: 

Note: Provide the following information ifany soil or water contamination is found during the decommissioning or change-in- service. 

Contamination must be reported by the UST permittee within 24 hours. The licensed service provider must report contamination 

within 72 hours after discovery unless previously reported. 

Date Contamination Reported: 

DEQ Person Notified: 

By: 

D. OTHER DEQ PERMITS MAY BE NEEDED WHERE SOIL OR WATER CLEANUP IS REQUIRED. 

DEQ Water Discharge Permit #: 

Water Disposed to (Location): 

DEQ Solid Waste Disposal Permit #: 

Soil Disposal or Treatment Location: 

Date: 

Date: 

1 

UST Cleanup Manual 103 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

E. TANK INFORMATION: 

TANK 

ID# 

DEQ-UST 

PERMIT # 

TANK SIZE 

IN 

GALLONS 

PRODUCT: GASOLINE, 

DIESEL, USED OIL, 

OTHER? 

PRESENT NEW 

CLOSURE OR CHANGE-IN 

TANK 

REMOVAL 

-•,• 1 

CLOSURE 

IN 

PLACE* 

-SERVICE? 

CHANGE 

IN 

SERVICE* 

TANK TO BE 

REPLACED? 

YES NO 

NOTE 1: Where decommissioned tank(s) are replaced by new underground storage tanks the UST permittee must submit a General 

Permit Registration Form to Install and Operate USTs containing information on the new tanks 30 days before installing them. 

NOTE 2: Submit a soil sampling plan to the DEQ regional office and receive plan approval prior to starting work if 1) tank is to be 

decommissioned in-place, 2) tank contents are changed to a non-regulated substance, 3) tank contains a regulated substance other than 

petroleum, or 4) tank changed to non-regulated use. 

F. DISPOSAL INFORMATION: 

TANK 

ID# 

TANK AND PIPING DISPOSAL METHOD 

SCRAP LANDFILL 

OTHER IDENTIFY LOCATION 

& PROPERTY OWNER 

DISPOSAL LOCATION OF TANK CONTENTS 

LIQUIDS SLUDGES 

NOTE 1: The tank contents, the tank and the piping may be subject to the requirements of Hazardous Waste regulations. If you have 

questions, contact the DEQ regional office, for your area. 

NOTE 2: Attach copies ofthe disposal receipts for the tanks and piping. If the tanks are shipped off-site for reuse provide the name, 

address and phone number ofthe person or business receiving the tanks for reuse. 

NOTE 3: Attach copies ofthe disposal receipts for the disposal or treatment of liquid or sludge removed fi'om the tanks 

UST Cleanup Manual 104 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

G. CONTAMINATION INFORMATION: 

TANK 

ID# 

GROUND 

WATER 

IN PIT ? 

PRODUCT 

ODOR IN 

SOIL? 

PRODUCT 

STAINS 

IN SOIL? 

NUMBER 

OF _ 

SAMPLES 

LABORATORY 

( NAME, CITY, STATE. PHONE) 

• 

NOTE 1: Attach a copy ofthe laboratory report showing the results ofall tests on all soil and water samples. The laboratory report 

must identify sample collection methods, sample location, sample depth, sample type (soil or water), type of sample container, sample 

temperature during transportation, types of tests, and copies of analytical laboratory reports, including QA/QC infonnation. Include 

laboratory name, address and copies of chain-of-custody forms. 

NOTE 2: If contamination is detected and a Level 2 or Level 3 soil matrix cleanup standard is applied to the site, attach a copy ofthe 

soil matrix analysis including methods of determining soil type, depth to groundwater, and sensitivity of uppermost aquifer. 

H. SITE SKETCH: (Show location ofadjacent roads, property lines, structures, dispensers, & all USTs. Show North, general 

direction of ground slope and soil sample locations. Sketch does not need to be drawn to scale. You may attach a separate 

drawing.) 

UST Cleanup Manual 105 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

I. SAFETY EQUIPMENT ON JOB SITE: 

Fire Extinguisher: 

Combustible Gas Detector: 

Oxygen Analyzer: 

Type/Size: 

Model: 

Model: 

Recharge Date: 

Calibration Date: 

Calibration Date: 

J. DECOMMISSIONING: 

All Tanks: N/A = Not Applicable (Check (V) Appropriate Box) 

1. All electrical equipment grounded and explosion proof? 

/ • , 

2. Safety equipment on job site? 

3. Overhead electrical lines located? 

4. Subsurface electrical lines off or disconnected? 

5. Natural gas lines off or disconnected? 

6. No open fires or smoking material in area? 

7. Vehicle and pedestrian traffic controlled? 

8. Excavation material area cleared? 

9. Rainwater runoff directed to treatment area? 

10. Drained and collected product fi-om lines? 

11. Removed product and residual from tank? 

12. Cleaned tank? 

13. Excavated to top of tank? 

14. Removed tank fixtures? (pumps, leak detection equipment) 

15. Removed product, fill and vent lines? 

YES NO 

r 

UNKNOWN 

».. , 

N/A 

K. TANK ABANDONMENT IN-PLACE: 

All Tanks: N/A = Not Applicable (Check (V) Appropriate Box) 

16. Sampling plan approved by DEQ? 

Date: DEQ Staff:. 

17. Contamination concems fiilly resolved? 

18. Fill Material? Type: 

YES NO UNKNOWN N/A 

UST Cleanup Manual 106 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

L. TANK REMOVAL: 

All Tanks: N/A = Not Applicable (Check (V) Appropriate Box) 

19. Tank placement area cleared, chocks placed? 

20. Purged or ventilated tank to prevent explosion? 

Method used: 

Meter reading: 

1 

21. Were chains or steel cables wrapped around tank for removal? 

22. Tank removed, set on ground, blocked to prevent movement? 

23. Tank set on truck and secured with straps(s)? 

24. Tank labeled before leaving site? 

YES NO 

' 

UNKNOWN N/A 

M. SITE ASSESSMENT: 

All Tanks: N/A = Not Applicable (Check (V) Appropriate Box) 

25. Site assessed for contamination? See OAR 340-122-0340 

26. Soil samples taken and analyzed? 

27. Was contamination found? Date/Time: 

28. Was hazardous waste determination made for tank contents 

(Liquids/sludges)? 

YES NO UNKNOWN N/A 

UST Cleanup Manual 107 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

N. REQUIRED SIGNATURES: 

I have personally reviewed this decommissioning checklist and site assessment report and the attachments and find 

them to be true and complete. 

Permittee or Tank Owner: 

(Please Print) 

Permittee or Tank Ovmer: " Date: 

(Signature) 

I have personally reviewed this decommissioning checklist and site assessment report and the attachments and find 

them to be true and complete. 

Licensed Supervisor: •' 

(Please Print) 

Licensed Supervisor: . Date: 

(Signature) 

I have personally reviewed this decommissioning checklist and site assessment report and the attachments and find 

them to be true and complete. 

Executive Officer: 

Licensed Service Provider (Please Print) 

Executive Officer: Date: 

Licensed Service Provider (Signature) 

O. REPORT FILING: 

This report signed by the permittee or tank owner, licensed supervisor and executive officer ofthe Service Provider, 

complete with all applicable attachments, must be filed with the DEQ regional office within 30 days after the excavation 

is backfilled or change-in-service is complete. Do not wait until any site related cleanup project is completed. Contact 

the DEQ regional office prior to filing this report where special circumstances exist at the site (such as water in pit, 

remaining pockets of contamination, etc.). 

P. HELP WITH THIS REPORT: 

If you have any questions about this decommissioning checklist and site assessment report, please phone your DEQ 

Regional Office. You can also phone the UST Program's toll-free number, 1-800-742-7878. This is a message answering 

machine for calls made within Oregon. Underground Storage Tank Program staff will retum your calls within 24 hours. 

You can also send an e-mail to tanks.info@deq.state.or.us. Our regional staff are also available to answer questions 

regarding tank decommissioning or change-in-service requirements (see below for telephone numbers). 

UST Cleanup Manual 108 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

Q. COPIES OF THE GENERAL PERMIT TO DECOMMISSION OR COMPLETE A CHANGE-IN-SERVICE: 

Obtain copies ofthe general permit to decommission or complete a change-in-service conditions and requirements, UST 

Program rules and laws and UST Cleanup rules and laws at: 

1. Any ofthe DEQ offices listed below, 

2. By calling the UST HELPLINE at 1 -800-742-7878, 

3. Send an e-mail to tanks.info(5).deq.state.or.us or 

4. Downloading from the UST home page at: 

http;//w"Ww.deQ.state.or.us/lq/tanks/ust/index.htm 

NORTHWEST REGION; 

Clackamas, Clatsop, 

Columbia, Multnomah, 

Tillamook & Washington 

Counties 

WESTERN REGION: Benton, 

Coos, Cuny, Douglas, Jackson, 

Josephine, Polk, Lane, Lincoln, 

Linn, Marion & Yamhill Counties 

EASTERN 

REGION: 

Baker, Crook, 

Deschutes, 

Gilliam, Grant, 

Harney, Hood 

River, Jelferson, 

Klamath, Lake, 

Malheur, 

Mon'ow, 

Shemian, 

Umatilla, Union, 

Wasco, Wheeler 

& Wallowa 

Counties 

EASTERN REGION / THE DALLES 

400 E. Scenic Drive, Building 2 - 307 

The Dalles; OR 97058 

Phone: 541-298-7255 

Fax: 541-298-7330 

NORTHWEST REGION 

2020 SW 4th Avenue, Suite 400 

Portland, OR 97201-5884 

Phone: 503-229-5263 

Fax: 503-229-6945 

WESTERN REGION / COOS BAY 

381 N SECOND STREET 

COOS BAY 97420 

Phone: 541-269-2721 

Fax: 541-269-7984 

WESTERN REGION / EUGENE 

165 East 7* Avenue, Suite 100 

Eugene, OR 97401 

Phone: 541-686-7838 

Fax:541-686-7551 

WESTERN REGION / SALEM 

750 Front Street NE, Suite 120 

Salem, OR 97301-1039 

Phone: 503-378-8240 

Fax: 503-373-7944 

UST Cleanup Manual 109 May 2009 
^ Oregon Department of Environmental Quality - Underground Storage Tank Program ._ 

SECTION 4.4: SOIL MATRIX CHECKLIST AND SCORE SHEET 

SOIL MATRIX CHECKLIST 

1. The release of petroleum has been reported to the DEQ (0220). 

2. The matrix score sheet has been completed for this site, unless the site is cleaned up to the most stringent cleanup 

level (0320). • 

3. The required hydrocarbon identification test (NWTPH-HCID) has been performed (0335(3)), and, if detectable 

levels were found, the appropriate analytical method or methods have been used to measure the levels of 

contamination (0218). 

4. A sketch has been made of this site (0345(1)) which clearly shows: 

a. The location ofall buildings and other key features, both man-made and natural; 

__ b. The names ofadjacent streets and properties; 

c. The location ofall excavations includuig those that were for the removal of tanks and associated piping as 

well as those that were strictly for the removal of contaminated soils; 

d. Thelocationofallproductstoragetanks, lines and dispensers, including those that were decommissioned 

as well as those that remain on the site; and 

e. All soil and water sample locations. 

5. Ifany contaminated soil exceeding matrix limits has been left on site, the reason for leaving this soil has been 

explained and the requirements of 0340(I)(f) and 0355(4) have been met. 

6. If water was present in the tank pit, the Department was notified, the water was pumped from the pit, ahd the 

requirements of 0340(4) have been met. 

7. All soil and/or water samples have been collected, coded, stored and shipped as specified in the rules, and proper 

chain-of-custody forms have been filled out (0345). 

8. If a release fi-om a waste oil tank was discovered, at least one sample has been analyzed by the methods specified 

in0218(I)(b)(D). 

9. If a tank was decommissioned in place, the Department gave prior approval for a site-specific sampling plan 

(0340(5)). 

10. A report has been prepared which includes a detailed description of everything that was 

observed and performed at the site, contains all ofthe information required by the mles (0360), and presents 

findings and recommendations which are consistent with Department regulations. 

UST Cleanup Manual 110 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SOIL MATRIX SCORE SHEET 

I. Depth to Groundwater 

< 25 feet (10) 

25-50 feet ' ( 7) 

51-100 feet (4) 

> 100 feet (1) 

2. Mean Annual Precipitation 

> 45 inches, (10) 

20-45 inches (4) 

< 20 inches (I) 

3. Native Soil Type 

Course sands, gravels (10) 

Silts, fme sands ( 5) 

Clays (1) 

4. Sensitivity of Uppermost Aquifer 

Sole Source (10) 

Current Potable ( 7) 

Future Potable (4) 

Non-potable (1) 

5. Potential Receptors 

Many, near ~ (10) 

Medium (5) 

Few, far (1) 

TOTAL SCORE 

MATRIX 

SCORE 

Level 1: > 40 pts. 

Level 2: 25-40 pts. 

Level 3: < 25 pts. 

Cleanup Level (ppm TPH) 

Gasoline 

40 

80 

130 

Diesel 

100 

500 

1000 

UST Cleanup Manual 111 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 5: REFERENCES AND ADDITIONAL GUIDANCE 

SECTION 5.1: REFERENCES 

The following documents are referenced in this guidance manual. Copies ofthe DEQ documents can be obtained by 

calling the Department's Land Quality Division in Portland at 503-229-6652, or I -800-742-7878 (toll fi-ee in Oregon). 

You can also find these documents on the intemet. The address for each is included in the larger list of guidance 

documents given in Section 5.2: Additional Guidance Documents. 

Construction and Maintenance of Monitoring Wells and Other Holes in Oregon (Oregon Water Resources 

Department, 1995). 

Groundwater Monitoring Well Drilling, Construction, and Decommissioning (DEQ, 1992). 

Guidance for Applying the Low-Impact Site Rule to UST Cleanup Sites (DEQ, January 2008). 

Guidance for Ecological Risk Assessment - Level I: Scoping (DEQ, 1998). 

Guidance for Use of Institutional Controls (DEQ, 1998). 

Heating Oil Tank Generic Remedy Guidance Document (DEQ, August 2007). 

Northwest Total Petroleum Hydrocarbon Methods (DEQ, 1996). 

Risk-Based Decision Makingfor the Remediation of Petroleum-Contaminated Sites (DEQ, September 22,2003). 

Treatment of Petroleum-Contaminated Soils (DEQ, June 2007). 

UST Cleanup Manual 112 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

SECTION 5.2: ADDITIONAL GUIDANCE DOCUMENTS 

The following is a list of DEQ, EPA, and other cleanup and risk-related guidance documents, permits, and forms, and the internet (web site) addresses* 

where they can be found. You can get printed copies ofthe DEQ documents by calling the Land Quality Division, 503-229-6652, or by leaving a 

message on the UST Helpline, 1-800-742-7878 (toll free in Oregon). 

NAME OF DqcuMENT . . WEB SITE ADDRESS 

- THE FOLLOWING ARE DEQ UST PROGRAM GUIDANCE DOCUMENTS -

Risk-Based Decision Making for the Remediation of 

Petroleum-Contaminated Sites 

Risk-Based Decision Making for the Remediation of 

Petroleum-Contaminated Sites Spreadsheet 

Guidance for Applying the Low-Impact Site Rule to UST 

Cleanup Sites 

Northwest Total Petroleum Hydrocarbon Methods 

Treatment of Petroleum-Contaminated Soils 

Heating Oil Tank Generic Remedy Guidance Document 

Heating Oil Tank Generic Remedy Worksheets 

Heating Oil Tank Generic Remedy Report Form 

Heating Oil Tank Generic Remedy Instructions 

Heating Oil Tank Generic Risk Assessment 

http://www.deq.state.or.us/lq/Dubs/docs/RBDMGuidance.Ddf 

httD://www,deq.state,or.us/lq/pubs/docs/RBDMSpreadsheetNotes.pdf 

httD://www.deq.state.or.us/lq/Dubs/docs/tanks/LowlmDactSiteRuleGuidance.pdf 

httD://wvw.deq.state.or.us/lq/tanks/lust/nwDetroleum.htm 

httD://www.deq.state.or.us/lq/Dubs/factsheets/tanks/PCSTreatmentODtlons.Ddf 

http://www.deq.state.or.us/lq/pubs/docs/tanks/hot/HOTGenericRemedvGuidanc 

e.pdf 

http://www.deq.state.or.us/lo/Dubs/forms/tanks/hot/HOTGenericRemedvWorks 

heet.Ddf 

httD://www.deq.state.or.us/lq/Dubs/forms/tanks/hot/HOTGenericRemedvReDort. 

Edf 

http://viww,deq.state.or.us/lo/Dubs/forms/tanks/hot/HOTGenericRemedvReDortl 

nstructions.pdf 

httD://www.deq.state.or.us/lq/DUbs/docs/tanks/hot/HOTRiskBasedStandards.Dd 

f 

-TH E FOLLOWING ARE DEQ UST PROGRAM RULES- | 

Cleanup Rules for Leaking Petroleum UST Systems 

j OAR 340-122-0205 through 340-122-0360 

httD;//www.deq.state.or.us/requlations/rules.htm 

UST Cleanup Manual 113 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

NAMEOF,DOCUMENT - -. ^ \ , 

Underground Storage Tank Compliance Rules 

OAR 340-150-0001 through 340-150-0166 

Underground Storage Tank Service Providers 

OAR 340-160-0005 through 340-160-0150 

UST Soil Matrix Cleanup Service Providers and Supervisors 

OAR 340-162-0005 through 340-162-0150 

Licensing Requirements for Service Providers and Supervisors 

Providing Heating Oil Tank Services 

OAR 340-163-0005 through 340-163-0150 

Heating Oil Underground Storage Tanks 

OAR 340-177-0001 through 340-177-0095 

-»,, , •' V, ,, . WEB SITE AbDRESs , 

httD://www.deq.state.or.us/requlations/rules.htm 

httD://www.deq.state.or.us/requlations/rules.htm 

http://www.deq.state.or.us/requlations/rules.htm 

httD://www.deq.state.or.us/requlations/rules.htm 

httD://www.deq.state.or.us/requlations/rules.htm 

~ THE FOLLOWING ARE DEQ UST PROGRAM COMPLIANCE PERMITS AND FORMS -

To Install and Operate Regulated Tanks , and 

EPA Notification for Underground Storage Tanks 

To Decommission Existing Unregistered Tanks , and 

EPA Notlflcatlon.for Underground Storage Tanks 

To Modify Tank Owner, Permittee or Property Owner Infomiation 

UST Decommisslonlng/Change-ln-Service 30-Day Notice 

UST Decommissioning Checklist and Site Assessment Report 

UST Installation Checklist 

UST System Modification 30-Day Notice 

UST Systenn Modification Checklist 

http://www,deq.state.or.us/Dubs/forms.htm 

httD://www.deo.state,or.us/Dubs/forms.htm 

httD://www.deq.state.or.us/Dubs/forms.htm 

httD://www.deq.state.or.us/pubs/forms.htm 

httD://www.deq.state.oi'.us/Dubs/forms.htm 

http://viww.deq.state.or.us/pubs/forms.htm 

"" http://www.deq.state.or.us/Dubs/forms.htm 

http://www.deq.state.or.us/pubs/forms.htm 

~ THE FOLLOWING ARE DEQ ENVIRONMENTAL CLEANUP DIVISION GUIDANCE DOCUMENTS THAT MAY BE USEFUL FOR SOME UST APPLICATIONS ~ 

Contaminated Aquifer Policy 

Groundwater Monitoring Well Drillirig, Construction, and 

Decommissioning 

httD;//www.deq.state.or.us/pubs/reports.htm 

http://www.deq.state.or.us/Dubs/reDorts.htm 

UST Cleanup Manual 114 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

NAME OF DOCUMENT 

Guidance for Conduct of Deterministic Human Health Risk 

Assessments 

Guidance for Consideration of Land Use 

Guidance for Conducting Beneficial Water Use Determinations 

at Environmental Cleanup Sites : 

Guidance for Ecological Risk Assessment - Level 1: Scoping 

Guidance for Use of Institutional Controls 

WEB SITE ADDRESS 

http://wvvw,deq.state.or.us/Dubs/reDOrts.htm 

httD;//viww.deq.state.or.us/pubs/reports.htm 

httD://www.deq.state.or.us/pubs/reDorts.htm 

httD://www.deq.state.or.us/Dubs/reDorts.htm 

httD://vwvw.deq.state.or.us/Dubs/reDorts.htm 

- THE FOLLOWING ARE DEQ ENVIRONMENTAL CLEANUP DIVISION GUIDANCE DOCUMENTS THAT MAY BE USEFUL FOR SOME NON-UST APPLICATIONS ~ 

Generic Remedies for Soils Contaminated with PCBs 

Guidance for Ecological Risk Assessment - Level II: Screening 

Guidance for Ecological Risk Assessment - Level II Screening 

Benchmark Values 

Guidance for Ecological Risk Assessment - Level III: Baseline 

Guidance for Ecological Risk Assessment - Level IV: Field 

Baseline 

Toxicity Equivalency Factors (TEF) Policy Statement 

httD://www.deq.state.or.us/Dubs/reDorts.htm 

httD://www.deq.state.or.us/Dubs/reDorts.htm 

httD://www.deq.state.or.us/Dubs/reDorts.htm 

http://www.deq.state.or.us/Dubs/reDorts.htm 

httD://www.deq.state.or.us/Dubs/reDOrts.htm 

httD://www.deq.state.or.us/Dubs/reports.htm 

~ THE FOLLOWING ARE OREGON WATER RESOURCE DEPARTMENT RULES ON MONITORING WELLS ~ 

Construction and Maintenance of Monitoring Wells and Other 

Holes in Oregon 

httD://arcweb.sos.state.or.us/rules/OARS 600/OAR 690/690 240.html 

- THE FOLLOWING ARE EPA GUIDANCE DOCUMENTS AND REFERENCES ~ 

Catalog of EPA Materials on Underground Storage Tanks 

Expedited Site Assessment Tools For Underground Storage 

Tank Sites 

How to Effectively Recover Free Product At Leaking 

Underground Storage Tank Sites 

How to Evaluate Alternative Cleanup Technologies for 

Underground Storage Tank Sites 

httD://www.eDa.qov/swerust1/Dubs/index.htm#fDrq 

http://www.epa.g0v/swerustl/pubs/index.htm#fprg 

http://www.epa.g0v/swerustl/pubs/index.htm#fprg 

http://www.epa.g0v/swerustl/pubs/lndex.htm#fprg 

UST Cleanup Manual 115 May 2009 
Oregon Department of Environmental Quality - Underground Storage Tank Program 

NAME OF DOCUMENT 

Integrated Risk Information System (IRIS) 

Institutional Controls: A Site Manager's Guide to Identifying, 

Evaluating and Selecting Institutional Controls at Supertund 

and RCRA Corrective Action Cleanups 

Modeling Subsurface Transport of Petroleum Hydrocarbons 

Notification for Underground Storage Tanks - EPA Fonn 7530-1 

RBCA Fate & Transport Models: Compendium and Selection 

Guidance 

Risk Assessment Guidance for Superfund (RAGS), Volume 1 -

Human Health Evaluation Manual, Part B (1991) 

Soil Screening Guidance: Technical Background Document 

Soil Screening Guidance: User's Guide 

Key OSWER Ground Water Guidances and Reports 

Test Methods for Evaluating Solid Waste (SW-846) 

W EB SITE ADDRESS 

httD://www.eDa.qov/iris 

httD://www.eDa.qov/superfund/Dolicv/ic/quide/quide.Ddf 

httD://www.eba.qov/athens/learn2model 

http://www.eDa.qov/oust/fedlaws/notlfv98.Ddf 

httD://www.eDa.qov/oust/rbdm/rbdmfnt.htm 

httD://www.eDa.qov/oswer/riskassessment/raqsa/index.htm 

httD://wvw.eDa.qov/suDerfund/health/conmedia/soil/index.htm 

httD://www.eDa.qov/suDerfund/health/conmedia/soil/index.htm 

http://www.epa.qov/ada/Dublications.html 

httD;//www.eDa.qov/eDaoswer/hazwaste/test/sw846.htm 

- THE FOLLOWING IS A GUIDANCE DOCUMENT PUBLISHED BY THE US ARMY CORPS OF ENGINEERSEvaluation of H.E.L.P. Mate 2000 for the Identification and 

Quantification of Petroleum Hydrocarbon Products 

httD://wvvw.crrel.usace.armv.mil/techpub/CRREL ReDorts/reDorts/TR00-20.Ddf 

- THE FOLLOWING ARE PETROLEUM PRODUCT DOCUMENTS PUBLISHED BY THE ASSOCIATION FOR THE ENVIRONMENTAL H EALTH OF SOILS ~ | 

Volume 1: Analysis of Petroleum Hydrocarbons in 

Environmental Media 

Volume 2: Composition of Petroleum Mixtures 

Volume 3: Selection of Representative TPH Fractions Based 

on Fate and Transport Considerations 

Volume 4: Development of Fraction Specific Reference Doses 

(RfDs) and Reference Concentration (RfCs) for Total 

Petroleum Hydrocarbons (TPH) 

httD://aehs.com/Dublications/cataloq/contents/tDh.htm 

httD://aehs.com/Dublications/cataloq/contents/tDh.htm 

. httD://aehs.com/Dublications/cataloq/contents/tDh.htm 

httD://aehs.com/Dublications/cataloq/contents/tph.htm 

Note: Internet addresses are current as ofthe date of this guidance document, but are subject to change. 

UST Cleanup Manual 116 May 2009