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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/R03-88/043
ROD Date:  06/29/1988
Operable Unit(s):  02
 
Media:  GROUNDWATER
 
Contaminant:  BENZENE
 
Abstract:  THE WESTLINE SITE, LOCATED IN THE TOWN OF WESTLINE, MCKEAN COUNTY, PENNSYLVANIA, IS A 40-ACRE TRACT OF LAND FORMERLY USED AS A LUMBER PROCESSING FACILITY. BETWEEN 1901 AND 1952, THE ONSITE CHEMICAL PLANT CONVERTED LUMBER INTO CHARCOAL, METHANOL, AND ACETIC ACID. IN 1952, THE PLANT WAS CLOSED DUE TO EQUIPMENT DETERIORATION AND DECLINING PROFITS. WASTE TARS CONTAINING HIGH LEVELS OF POLYNUCLEAR AROMATIC HYDROCARBONS (PAHS) AND VARIOUS PHENOLIC COMPOUNDS WERE LEFT ONSITE. AN EMERGENCY REMOVAL ACTION WAS IMPLEMENTED IN 1983 TO REMOVE THE LARGEST TAR DEPOSIT, AND A RECORD OF DECISION WAS SIGNED IN JULY, 1986, TO ADDRESS THE EXCAVATION AND OFFSITE INCINERATION OF REMAINING TAR DEPOSITS AND CONTAMINATED SOIL. THIS SECOND OPERABLE UNIT ADDRESSES POTENTIAL GROUND WATER CONTAMINATION. IN 1985 HIGH LEVELS OF BENZENE WERE FOUND IN TWO ONSITE MONITORING WELLS. ADDITIONAL TESTS INDICATED THE PRESENCE OF TOLUENE, TRICHLOROETHANE, PHENOL, AND OTHER VOCS; HOWEVER, BENZENE WAS THE ONLY CONTAMINANT THAT EXCEEDED FEDERAL MAXIMUM CONTAMINANT LEVELS (MCLS) OF 5 UG/L, AND IS, THEREFORE, THE PRIMARY CONTAMINANT OF CONCERN.

THE SELECTED REMEDIAL ACTION FOR THE GROUND WATER OPERABLE UNIT AT THE WESTLINE SITE IS NO FURTHER ACTION. SINCE DRINKING WATER FOR THE TOWN OF WESTLINE IS OBTAINED FROM SMALL STREAMS UPGRADIENT OF THE SITE AND ALL CONTAMINANTS EXCEPT BENZENE ARE BELOW FEDERAL MCLS, EPA HAS DETERMINED THAT NO SIGNIFICANT RISK TO PUBLIC HEALTH AND THE ENVIRONMENT EXISTS. GROUND WATER WILL BE MONITORED TO ENSURE EFFECTIVENESS OF NATURAL ATTENUATION, AND INSTITUTIONAL CONTROLS WILL BE IMPLEMENTED TO PREVENT CONSTRUCTION OF NEW DRINKING WATER WELLS IN THE CONTAMINATED AREA. THERE ARE NO CAPITAL COSTS ASSOCIATED WITH THE REMEDY, AND O&M COSTS FOR MONITORING WERE NOT SPECIFIED.
 
Remedy:  1. THIS RECORD OF DECISION (ROD) ADDRESSES ONLY THE GROUND WATER AT THE WESTLINE SITE. A PREVIOUS ROD WAS SIGNED ON JULY 3, 1986 BY THE AGENCY FOR REMEDIATION OF THE WASTE TAR WHICH WILL BE EXCAVATED AND INCINERATED OFFSITE.

2. THE SELECTED REMEDY FOR GROUND WATER IS A NO-ACTION ALTERNATIVE WITH CONTINUED MONITORING. THIS MEANS THERE IS NO SPECIFIC TREATMENT PROCESS NECESSARY TO REMEDIATE THE GROUND WATER AQUIFER AT THE WESTLINE SITE.

3. EPA AND DER WILL CONTINUE TO MONITOR SURFACE AREAS TO BE SURE NO CONTINUED SOURCES OF CONTAMINATION ARE RELEASED.

4. EPA AND DER WILL CONTINUE TO MONITOR GROUND WATER CONTAMINANTS ON A YEARLY BASIS FOR THE NEXT FIVE YEARS TO CONFIRM THE NATURAL ATTENUATION OF CONTAMINANT LEVELS AND TO ASSURE THERE ARE NO THREATS TO PUBLIC HEALTH. AFTER THIS PERIOD, EPA AND DER WILL REASSESS THE FREQUENCY OF MONITORING.

5. DER, IN COOPERATION WITH LAFAYETTE TOWNSHIP AND THE COMMUNITY OF WESTLINE, WILL PREVENT ANY NEW DRINKING WATER WELLS IN THE CONTAMINATED WATER BEARING ZONES FOR THE DURATION OF THE NATURAL REMEDIATION.
 
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