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Record of Decision System (RODS)

AMBLER ASBESTOS PILES

Abstract

Site Name:  AMBLER ASBESTOS PILES
Address:  LOCUST STREET 
City & State:  AMBLER  PA  19002
County:  MONTGOMERY
 
EPA ID:  PAD000436436
EPA Region:  03
 
NPL Status:  Deleted from the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-89/080
ROD Date:  09/29/1989
Operable Unit(s):  02
 
Media:  Debris, SEdiments, Soil, Surface Water
 
Contaminant:  ASBESTOS
 
Abstract:  THE AMBLER ASBESTOS PILES SITE IS IN THE SOUTHWESTERN PORTION OF THE BOROUGH OF AMBLER, MONTGOMERY COUNTY, PENNSYLVANIA. THIS SECOND OPERABLE UNIT FOR THE SITE ADDRESSES THE CERTAINTEED ASBESTOS PILE PORTION OF THE AMBLER ASBESTOS SITE. THE CERTAINTEED ASBESTOS PILE CONTAINS ASBESTOS SCRAP MATERIALS AND ENCOMPASSES APPROXIMATELY 3.5 ACRES OF A 5-ACRE TRACT. LAND AROUND THE SITE IS USED FOR INDUSTRIAL, COMMERCIAL, RESIDENTIAL, AND TRANSPORTATION PURPOSES. THE SITE IS BORDERED TO THE SOUTHEAST BY THE STUART FARM CREEK FLOODPLAIN AND ASSOCIATED WETLANDS SYSTEM, AND TO THE WEST BY THE WISSAHICKON CREEK FLOODPLAIN. THE CERTAINTEED PILE WAS CREATED BY THE DISPOSAL OF ASBESTOS-CEMENT SCRAP ORIGINATING FROM ASBESTOS PIPE MANUFACTURING OPERATIONS AT THE CERTAINTEED PLANT. IN ADDITION, ASBESTOS-CONTAMINATED SLUDGE FROM A PROCESS WATER TREATMENT SETTLING POND WAS ALSO DISPOSED OF AT THE SITE. ASBESTOS WASTE DISPOSAL CONTINUED FROM 1962 UNTIL 1977 WHEN THE STATE ORDERED THE CERTAINTEED PILE CLOSED. AT PRESENT THE PILE CONTAINS APPROXIMATELY 110,000 CUBIC YARDS OF ASBESTOS-RELATED WASTE MATERIAL WHICH IS COVERED BY APPROXIMATELY 22,000 CUBIC YARDS OF SOIL. SEVERAL INORGANIC CONTAMINANTS HAVE ALSO BEEN DETECTED IN THE SOIL AND DEBRIS OF THE PILE AS WELL AS IN SURFACE WATER AND SEDIMENT FROM STUART FARM CREEK. BECAUSE THE ACTUAL SOURCES OF THE INORGANIC CONTAMINANTS IN THE CREEK HAVE NOT BEEN IDENTIFIED, A VERIFICATION STUDY WILL BE PERFORMED TO DEFINE THE SOURCE OF THESE CONTAMINANTS. THE PRIMARY CONTAMINANT OF CONCERN AFFECTING THE SOIL, SEDIMENT, DEBRIS, AND SURFACE WATER IS ASBESTOS.

THE SELECTED REMEDIAL ACTION FOR THE SITE INCLUDES REGRADING THE PILE PLATEAU TO PROMOTE PROPER STORM WATER DRAINAGE; PLACING A SOIL COVER WITH GEOTEXTILE REINFORCEMENT ON PORTIONS OF THE PILE PLATEAU AND SLOPE WHERE THE SOIL COVER IS LESS THAN TWO FEET DEEP; PERFORMING A VERIFICATION STUDY TO DETERMINE THE SOURCE OF INORGANICS IN STUART FARM CREEK; INSTALLING EROSION CONTROL DEVICES TO PROTECT THE TOE OF THE PILE FROM SCOURING BY STUART FARM CREEK; IMPLEMENTING EROSION AND SEDIMENTATION CONTROLS TO FACILITATE VEGETATION; RESTRICTING SITE ACCESS; MONITORING AIR AND SURFACE WATER; AND POST-CLOSURE MAINTENANCE. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $753,000, WHICH INCLUDES ANNUAL O&M COSTS OF $21,700 FOR THE FIRST 5 YEARS AND $10,200 FOR YEARS 6-30.
 
Remedy:  THIS OPERABLE UNIT IS THE SECOND AND FINAL OF TWO OPERABLE UNITS PLANNED FOR THE SITE. BOTH OPERABLE UNITS ADDRESS THE POTENTIAL RELEASE OF ASBESTOS FROM THE SITE BY CONTAINING THE ASBESTOS-CONTAMINATED WASTE PILES. OPERABLE UNIT 1 ADDRESSES THE LOCUST STREET AND PLANT PILES ON THE PORTION OF THE SITE OWNED BY NICOLET, INC. THIS OPERABLE UNIT ADDRESSES THE PIPE PLANT DUMP (CERTAINTEED PILE) ON THE PORTION OF THE SITE OWNED BY CERTAINTEED CORPORATION.

THE MAJOR COMPONENTS OF THE SELECTED REMEDY ARE AS FOLLOWS:

* THE PILE PLATEAU WILL BE REGRADED TO PROMOTE PROPER DRAINAGE OF STORMWATER.
* A SOIL COVER WITH A GEOTEXTILE REINFORCEMENT WHERE NECESSARY WILL BE INSTALLED ON PORTIONS OF THE PLATEAU AND SIDE SLOPE AREAS WHERE THE EXISTING SOIL COVER IS LESS THAN TWO FEET.
* ADDITIONAL BORINGS WILL BE COLLECTED IN THE PILE PLATEAU AND SIDE SLOPES TO DETERMINE COVER THICKNESS AND DEFINE SOIL CHARACTERISTICS.
* PERFORMANCE OF A VERIFICATION STUDY TO DETERMINE SOURCE OF INORGANICS IN STUART FARM CREEK.
* EROSION ON WASTE PILE SLOPES DUE TO STORM EVENTS, SOIL CREEP, FREEZE/THAW EFFECTS., ETC. WILL BE REPAIRED WITH A GEOTEXTILE LINER AND ADDITIONAL SOIL COVER.
* EROSION CONTROL DEVICES WILL BE INSTALLED TO PROTECT THE TOE OF THE PILE FROM THE SCOURING ACTION OF STUART FARM CREEK.
* EROSION/SEDIMENTATION CONTROLS WILL BE IMPLEMENTED DURING REMEDIAL ACTIVITIES TO FACILITATE THE ESTABLISHMENT OF VEGETATION.
* INSTALLATION/UPGRADE OF FENCING/LOCKING GATES AND POSTING OF WARNING SIGNS.
* AIR MONITORING FOR ASBESTOS WILL OCCUR DURING REMEDIAL ACTIVITIES (PERSONNEL AND ENVIRONMENTAL).
* POST-CLOSURE INSPECTION, MONITORING, AND MAINTENANCE OF THE PILE, AND PREPARATION OF THE CONTINGENCY PLAN WILL BE ACCOMPLISHED.
 
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