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Record of Decision System (RODS)

WESTLINE

Abstract

Site Name:  WESTLINE
Address:  OFF OF OLD ROUTE 219 
City & State:  WESTLINE  PA  16740
County:  MCKEAN
 
EPA ID:  PAD980692537
EPA Region:  03
 
NPL Status:  Deleted from the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-90/086
ROD Date:  03/30/1990
Operable Unit(s):  03
 
Media:  NONE
 
Contaminant:  NONE
 
Abstract:  THE WESTLINE SITE IS A FORMER CHEMICAL PLANT IN THE RURAL COMMUNITY OF WESTLINE, LAFAYETTE TOWNSHIP, MCKEAN COUNTY, PENNSYLVANIA. THE SITE IS SITUATED ALONG KINZUA CREEK AND IS COMPLETELY SURROUNDED BY THE ALLEGHENY NATIONAL FOREST. FROM 1901 TO 1952, THE DAY CHEMICAL COMPANY PLANT WAS OPERATED TO CONVERT LUMBER TO CHARCOAL, METHANOL, AND ACETIC ACID. THE DAY CHEMICAL COMPANY DEPOSITED TAR MATERIAL CONTAINING PHENOLIC COMPOUNDS AND PAHS INTO ONSITE LAGOONS AND INTO SMALL CANALS TO ALLOW THE TAR MATERIAL TO MIGRATE DOWNHILL TOWARDS THE BANKS OF KINZUA CREEK. IN 1983, EPA CONDUCTED AN IMMEDIATE REMOVAL ACTION TO REMOVE 2,000 TONS OF TAR AND CONTAMINATED SOIL FROM THE LARGEST LAGOON OF TAR DEPOSITS. ALTHOUGH A 1986 RECORD OF DECISION (ROD) ADDRESSED THE REMEDIATION OF AN ADDITIONAL 2,340 TONS OF TAR AND SOIL FOUND IN AN ONSITE TAR PIT AND IN SOME OF THE INTERSPERSED TAR DEPOSITS ALONG KINZUA CREEK, THERE WAS STILL AN ESTIMATED 4,000 TONS OF TAR MATERIAL LEFT AT THE SITE IN THE AREAS PLANNED FOR EXCAVATION. MOST OF THE REMAINING TAR, HOWEVER, IS THREE FEET BELOW THE SURFACE AND IS NOT A DERMAL CONTACT THREAT. BASED ON AN UPDATED RISK ASSESSMENT USING MORE RECENT RISK CRITERIA FOR PAHS, EPA HAS DETERMINED THAT THE RESIDUAL SOIL AND TAR MATERIAL PRESENTS NO POTENTIAL CARCINOGENIC RISK GREATER THAN THE RANGE OF ACCEPTABLE RISKS FOUND AT OTHER SUPERFUND SITES AND WILL THUS DISCONTINUE EXCAVATING SOIL AND TAR MATERIAL. THIS ROD AMENDS A JULY 1986 ROD, WHICH CALLED FOR THE EXCAVATION AND OFFSITE INCINERATION AND DISPOSAL OF WASTE TAR FROM AN ONSITE TAR PIT AND THE INTERSPERSED TAR DEPOSITS ALONG KINZUA CREEK. THERE ARE NO LONGER ANY PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE SOIL AT THE SITE.

THE SELECTED REMEDIAL ACTION FOR THIS ROD AMENDMENT IS NO FURTHER ACTION. BECAUSE SOME TAR MATERIAL WILL REMAIN ONSITE, EPA WILL MONITOR THE SITE TO PREVENT UNACCEPTABLE EXPOSURE FROM THE WASTE TAR, AND A FIVE-YEAR REVIEW WILL BE SCHEDULED. NO COSTS WERE SPECIFIED FOR THIS NO ACTION REMEDY.

PERFORMANCE STANDARDS OR GOALS: NOT APPLICABLE.
 
Remedy:  THE PREVIOUS RECORD OF DECISION (ROD) SIGNED ON JULY 3, 1986 CALLED FOR EXCAVATION OF WASTE TAR FROM THE EXISTING PIT BEHIND THE WESTLINE CHURCH AND THE INTERSPERSED TAR DEPOSITS ALONG KINZUA CREEK. THE WASTE TAR WAS TO BE INCINERATED OFFSITE.

DURING THE SUMMER OF 1988, EPA BEGAN TO IMPLEMENT THAT REMEDIAL ACTION AND WITHIN THE FIRST FEW WEEKS OF EXCAVATION, EPA DETERMINED THAT THE VOLUME OF TAR WAS MUCH GREATER THAN ORIGINALLY ESTIMATED. IN 1986, EPA THOUGHT 800 TONS OF SOIL/TAR HAD TO BE EXCAVATED BUT REVISED ESTIMATES WERE EIGHT TIMES GREATER. DURING THIS SUMMER OF RECORD HEAT, EPA FOUND TAR IN MANY PLACES IT HAD NOT BEEN PREVIOUSLY DETECTED. BY NOVEMBER 1988, EPA HAD EXCAVATED THE TAR PIT BEHIND THE CHURCH WHICH PRESENTED THE GREATEST THREAT OF POTENTIAL DERMAL EXPOSURE AND SOME OF THE INTERSPERSED TAR DEPOSITS ALONG KINZUA CREEK. THESE MATERIALS WERE TRANSPORTED OFFSITE FOR INCINERATION AND DISPOSAL. OPERATIONS HAD TO BE CLOSED DOWN FOR THE WINTER SEASON.

BY THE SPRING OF 1989, EPA DECIDED TO REEVALUATE THE PUBLIC HEALTH AND ENVIRONMENTAL RISKS POSED BY THE REMAINING WASTE TARS AT THE SITE. BASED ON THE UPDATED RISK ASSESSMENT EMPLOYING THE NEWER RISK CRITERIA, THE DECREASE FOR POTENTIAL EXPOSURE AND AN IMPROVED MODEL, EPA HAS DETERMINED THAT NO FURTHER ACTION IS NECESSARY AT THIS SITE BECAUSE THE TAR MATERIAL NO LONGER POSES AN UNREASONABLE HEALTH RISK.
 
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