This section shall be used in combination with other sections of this chapter. Presented below are regulations that include water quality. Cleanup regulation, wac 173 340, implements the model toxics control act mtca, rcw 70. None clarc spreadsheet guidance background wac iris noncancer effects clarc spreadsheetexcerptt clarc spreadsheetexcerpt spreadsheet spreadsheet excerpt spreadsheet excerpt history of. Wac 173 340 706 deleted references to commercial sites. Such methods shall not be used to replace cleanup standards and remediation levels derived using deterministic methods. This report provides the results of these analyses and shows the potential impacts associated with the proposed rule. The pdf files below contain publication copies of the wac titles and chapters as published in 2012. Probabilistic risk assessment methods may be used under this chapter only on an informational basis for evaluating alternative remedies. The sediment impact zone maximum sizmax criteria in part iv of the rule, wac 173 204420. Persons entering into a prepayment agreement shall enter into good faith negotiations on an agreed order or consent decree governing remedial actions at the facility in accordance with the procedures described in wac 173 340 5201 or 173 340 5302. Existing models and methods monographs are available which detail the movement of napl. During cleanup action implementation, public participation shall be accomplished in a manner consistent with the requirements of wac 173 340 600. How the law works the cleanup of hazardous waste sites is complex and expensive.
Wac 173 340 prior to the construction of the proposed eells springs hatchery redevelopment, phase 3 to ensure the protection of human and health and the environment. This document is not intended to provide an explanation of each of the proposed changes. Wac 173204562 tables iii and iv and 173 204563 tables vi and vii. Chapter 173 303 washington administrative code wac, dangerous waste regulations. Wac part i general provisions 173 333100 introduction. Wac 173 340 747 part vii cleanup standards has proposed values based on a similar methodology.
A sampling and analysis plan is a document that describes the sample collection, handling. Reference dose as specified in wac 1733407087 mgkgday. Institutional controls are defined in mtca wac 173 340 440 as measures undertaken to limit and prohibit activities that may interfere with the integrity of an interim action or cleanup action or that may result in exposure to hazardous substances at a site. Within ninety days of receiving information under this section, the department shall conduct an initial investigation in accordance with wac 173 340 310. This section is intended to be used in conjunction with the administrative principles for the overall cleanup process in wac 173 340. Htmlpdf, 173340357, quantitative risk assessment of cleanup action alternatives. This is an archived version of the 2012 washington administrative code for the current html version of the wac, go to the full wac page. Method a cleanup levels shall be at least as stringent as all of the following. Legal history the legislature established an agricultural burning program in. This document provides a preliminary draft of ecologys proposed changes to sections 310 through 330 of chapter 173 340 wac, model toxics control act.
Wac 173 360a 340 performance standards for partially exempt ust systems. Mtca cleanup rulemaking chapter 173340 wac preliminary draft. For this independent cleanup conducted under wac 173 340 515, the cleanup would be complete when a no further action opinion letter is issued for toxic cleanup site under wac. Interagency steering committee on performance and risk. After deciding to fund an eligible project, ecology will negotiate with the 21. Report contaminated sites to the washington state department of ecology at 3604076300. The following tables were prepared as part of the rulemaking process for the amended mtca rule adopted february 12, 2001. The proposed changes are also footnoted in the rule text, which is available separately.
The purpose of model remedies is to streamline and accelerate the selection of cleanup. Wac 173 340 440 cont changed local government notification to include sending a copy of the executed deed restriction and to address independent cleanup notification requirements. Sediment management standards, chapter 173204 wac epa. The purpose of this section is to set forth the requirements for addressing releases that may pose a threat to human health or the environment from an underground storage tank ust regulated under chapter 90. The net benefit is sufficiently likely that ecology can proceed with the rule proposal. This section does apply to concentrations of hazardous substances in the air originating from other contaminated media or a. The model toxics control act mtca regulation washington administrative code wac 173 340 3507 broadly describes the elements necessary to complete a ri. Welcome to the cleanup levels and risk calculation clarc resource pages. Additions to the list, changes in remedial status of sites on the list, and removals from the list are published twice a. This document provides a summary of the proposed changes to chapter 173 360 wac, underground storage tank ust regulations, included in the preliminary draft rule.
For the current html version of the wac, go to the full wac page. Cleanup level based on concentration derived using equation 7201 for hexavalent chromium. The site qualifies under wac 173 340 7491 for an exclusion from conducting a simplified or sitespecific terrestrial ecological evaluation, or if the site qualifies for a simplified ecological evaluation, the evaluation is ended under wac 173 340 74922 or the values in table 7492 are used. Pahs must meet using the toxicity equivalency methodology in wac 173 340 7088.
Institutional controls are defined in mtca wac 173340440. The document also includes background information and a list of questions that. Development of cleanup action alternatives that include remediation levels. On these pages, youll find information to help you establish cleanup levels for chemicals found at hazardous waste sites. Pdf wac 173340450 releases from underground storage tanks. Regulatory reporting requirements flow chart author. For more information about the preliminary draft of the underground storage tank rule. Wac 173 340 700 deleted references to commercial sites. Spill or release to soil including encounters of preexisting contamination underground storage tank ust encountering known or unknown usts in excavations. Chapter 173 03 chapter 173 03 wac public records wac 173 03010 what is the purpose of this chapter. In an effort to avoid the confusion and delays associated with the federal superfund program, the model toxics control act is designed to be as streamlined as possible. This issue is an updated hazardous sites list as required by wac 173 340 330.
Hazardous material spill, release or encounter if a. Most importantly, the regulation defines standard methods used to assess whether a site is contaminated or clean. These regulations set standards for safely managing state dangerous wastes. Guidelines for decommissioning residential heating oil tanks. The purpose of this section is to ensure that the cleanup action is designed. Failure to successfully conclude such negotiations may result in the department withdrawing. The information in the tables was used when ecology developed the method a cleanup levels for the revised regulation. Keep a file of permits, lab results, disposal records, pictures. A cleanup action may be conducted under any of the procedures described in wac 173 340 510 and 173 340 515. This section applies to remedial actions being conducted at sites under any of the administrative options in wac 173 340 510 and 173 340 515.
The document also includes background information and a list of questions that ecology would like stag. The minor adverse effects level is defined as impact to the benthic community, not to individual benthic animals or spe. Underground storage tank regulations chapter 173360a. Also listed are national priorities list npl sites. Cleanup level based on applicable state and federal law wac 246290310 and 40 c. This exclusion is not meant to allow distant movement of materi. The amount of contamination determines how contaminated soil is handled. Part iii the pbt list and criteria and procedures for revising the list 173 333300 what. It includes all sites that have been assessed and ranked using the washington ranking method. Clarc is a compendium of technical information related to calculating cleanup levels under washingtons cleanup rule, the model toxics control act mtca regulation, chapter 173 340 wac. Washington state department of ecology publication no. The pdf files below contain publication copies of the wac titles and chapters as published in 2019.