In Re: Methyl Tertiary Butyl Ether ("MTBE") Products Liability Litigation

District Court, S.D. New York·Decided June 11, 2025·No. 1:00-cv-01898·Unknown

Opinion

UNITED STATES DISTRICT COURT SOUTHERN DISTRICT OF NEW YORK --------------------------------------- X : : IN RE: Methyl Tertiary Butyl Ether : Master File No: (“MTBE”) Products Liability Litigation : 1:00-1898 : This Document Relates To: : 14cv6228 (DLC) Commonwealth of Pennsylvania v. Exxon : Mobil Corporation, et al., Case No. : OPINION AND 1:14-cv-6228 : ORDER : : --------------------------------------- X

APPEARANCES:

For plaintiff Commonwealth of Pennsylvania: James A. Donahue, III Neil F. Mara Pennsylvania Office of the Attorney General Strawberry Square, 14th Floor Harrisburg, PA 17120

Michael Axline Tracey L. O’Reilly Molly McGinley Han Miller & Axline, P.C. 1050 Fulton Avenue, Suite 100 Sacramento, CA 95825

Eric S. Pasternack Stewart L. Cohen Robert L. Pratter Michael Coren Cohen, Placitella & Roth, P.C. 2001 Market Street, Suite 2900 Philadelphia, PA 19103

Yechiel Michael Twersky Daniel Berger Tyler E. Wren Berger Montague PC 1818 Market St Suite 3600 Philadelphia, PA 19103 For defendants Exxon Mobil Corp., et al., and on behalf of moving defendants: James A. Pardo Lisa A. Gerson Krista A. Reed McDermott Will & Emery LLP One Vanderbilt Avenue New York, NY 10017-5404

DENISE COTE, District Judge: This case is part of a consolidated multi-district litigation (“MDL”) relating to the contamination of groundwater caused by releases of gasoline containing methyl tertiary butyl ether (“MTBE”). In this action, the Commonwealth of Pennsylvania (“Commonwealth”) alleges that the defendants, which include dozens of gasoline manufacturers, distributors, and sellers, are liable for actual or threatened MTBE contamination in Pennsylvania’s drinking water. Certain of the defendants in this MDL have moved for partial summary judgment regarding the Commonwealth’s request for four categories of past costs.1 For the following reasons, the motion is granted in part. Background The following facts are taken from the documents submitted in connection with this motion. They are taken in the light

1 A list of moving defendants can be found in Attachment A to the defendants’ notice of this motion, docketed at ECF No. 1003, Case No. 1:14-cv-6228. most favorable to the plaintiff, as the non-moving party, unless otherwise noted. A. MTBE MTBE was blended into gasoline from the 1980s to 2000s, at

least in part to increase the octane level of gasoline, which is meant to reduce tailpipe emissions of carbon monoxide. Gasoline containing MBTE was widely distributed in Pennsylvania for use in motor vehicles. MTBE can and did enter the environment through spills, leaks, and other releases of gasoline from various storage and delivery systems, such as underground storage tanks at gas stations. Compared to other ingredients of gasoline, MTBE does not easily adhere to soil particles and is highly soluble in water. Once in water, MTBE dissolves easily and moves through the ground quickly. As a result, it penetrates deeply into underground aquifers; this contamination can spread underground over great distances. Once contamination

occurs, MTBE is difficult to remove and can make drinking water unfit for consumption, due to its foul taste and odor and potential adverse health effects. B. DEP Oversight Costs Pennsylvania enacted the Storage Tank and Spill Prevention Act (“Tank Act”) in 1989 to address chemical releases from storage tanks. 35 Pa. Cons. Stat. § 6021.102. Under that law, the Pennsylvania Department of Environmental Protection (“DEP”) may order “corrective action” to address a release or possible release. Id. § 6021.1302(a). “Corrective actions” may include

various measures to contain, assess, prevent, mitigate, abate, or remedy releases and their effects on public health and the environment. Id. § 6021.103. DEP regulations set forth a “Corrective Action Process” for owners and operators of storage tanks, and other responsible parties, to follow.2 25 Pa. Code. § 245.301 - 245.314. That process includes investigating and reporting suspected releases, taking interim remedial actions, replacing affected water supplies, and determining and reporting the need for further remediation. Id. § 245.304-311. Various stages of this process involve oversight by DEP, including the review of site characterization reports and remedial action plans, which must be submitted after reporting a release. Id. §

245.310, 311. DEP can approve or disapprove these submissions, and it can order the responsible party to perform additional tasks. Id. Once the DEP reviews and approves the remedial action plan, id. § 245.311(c), the responsible party implements it, and, upon completion, submits a remedial action completion

2 The regulations include a presumption that a tank owner or operator is strictly liable for “damage, contamination or pollution within 2,500 feet” of a tank containing the substance that caused the contamination. 25 Pa. Code. § 245.303(c). report (“RACR”) to the DEP. Id. § 245.312-245.313. The RACR must demonstrate that the remedial actions have achieved the selected remediation standard. Id. § 245.313(b). The DEP then

reviews the RACR and approves or disapproves it. Id. § 245.313(c). The plaintiff seeks to recover $1,275,062.25, which it contends represents the compensation of DEP employees who conducted oversight work, which was part of their normal job responsibilities, at 71 Focus Sites.3 The Commonwealth does not have employee time records for each Focus Site. Consequently, to reach this estimate, the plaintiff first identified the DEP employees who oversaw work at each Focus Site. DEP also reviewed each Focus Site’s file to estimate the total number of oversight hours worked at that Site. The Commonwealth then gathered the bi-weekly salary information for the relevant DEP

employees as they were paid in 2005, 2010, and 2021. Using the highest of those rates -- usually from 20214 -- the plaintiff calculated an adjusted hourly rate by adding 70.7% to account

3 As described below, this phase of the litigation addresses the plaintiff’s claims for relief in connection with certain Focus Sites. Those Sites are intended to be a representative sample of the contaminated sites in the Commonwealth.

4 This rate was used regardless of when the work on a particular Site was performed. for benefits and other payroll costs.5 Next, the adjusted hourly rates were averaged across all employees at a given Focus Site, such that each Focus Site was assigned one average hourly rate.6

Finally, the average rate for each Site was multiplied by the number of hours of oversight work that DEP had estimated for that Site. The resulting figures for all Sites added together is the amount that the Commonwealth seeks to recover in DEP oversight labor costs.7 During discovery, the defendants asked the Commonwealth to identify the costs it sought to recover for oversight, administration, and labor at the Focus Sites. The Commonwealth objected to the interrogatory “because it calls for expert opinion.” The Commonwealth objected to a request for admission regarding the same topic on the same ground. Nevertheless, the Commonwealth never proffered expert testimony on this issue.

5 The proportion of 70.7% was calculated based on the Fiscal Year 2020 payroll, but it was applied to the hourly rate regardless of when the employee was actually paid the rate or when the relevant oversight work was undertaken. The actual value of benefit and other payroll costs over the relevant period ranged from 29% to 70% of salary.

6 This average weighed all employees equally, regardless of how much time each employee actually worked on the Site.

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In Re: Methyl Tertiary Butyl Ether ("MTBE") Products Liability Litigation, (S.D.N.Y. 2025).

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