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Record of Decision System (RODS)

HRANICA LANDFILL

Abstract

Site Name:  HRANICA LANDFILL
Address:  HRANICA DRIVE 
City & State:  BUFFALO TOWNSHIP  PA  16055
County:  BUTLER
 
EPA ID:  PAD980508618
EPA Region:  03
 
NPL Status:  Deleted from the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-90/092
ROD Date:  06/29/1990
Operable Unit(s):  01
 
Media:  SOIL
 
Contaminant:  LEAD
 
Abstract:  THE 15-ACRE HRANICA LANDFILL SITE IS AN INACTIVE LANDFILL 21 MILES NORTH OF PITTSBURGH, IN BUTLER COUNTY, PENNSYLVANIA. THE SITE IS IN A RURAL AGRICULTURAL SETTING WITH 4,000 PEOPLE RESIDING WITHIN A TWO-MILE RADIUS OF THE SITE. BETWEEN 1966 AND 1974, BOTH MUNICIPAL AND INDUSTRIAL WASTES WERE ACCEPTED ONSITE INCLUDING PAINT AND SOLVENT WASTES, PLATING WASTES, METAL SLUDGES, AND WASTE OILS. THE WASTES WERE INCINERATED AND/OR STORED ONSITE IN SURFACE IMPOUNDMENTS UNTIL 1981. LIQUID WASTES WERE THEN DIRECTLY DISCHARGED INTO SURFACE IMPOUNDMENTS CAUSING GROUND, SURFACE, AND SOIL COVER CONTAMINATION. THE SURFACE IMPOUNDMENTS WERE SUBSEQUENTLY ABANDONED AND THE WASTES WERE THEN OPENLY BURNED. THE RESIDUAL ASH FROM THE INCINERATION PROCESS WAS STORED ONSITE IN UNPROTECTED PILES. NUMEROUS DRUMS OF UNPROCESSED WASTES WERE ALSO STAGED ONSITE WITHOUT FURTHER TREATMENT. IN 1983, REMOVAL ACTIVITIES WERE PERFORMED WHICH INCLUDED REMOVING AND DISPOSING OF MORE THAN 19,000 DRUMS AND 4,000 CUBIC YARDS OF CONTAMINATED SOIL; INCINERATING OIL AND PAINT SLUDGES AND CONSOLIDATING THE INCINERATOR ASH ONSITE; AND CAPPING THE SITE. ALTHOUGH THE REMOVAL ACTION REDUCED THE EXTENT OF THE CONTAMINATION, FURTHER SITE STUDIES REVEALED ELEVATED LEVELS OF CONTAMINATION IN THE ASH PIT AREA, THE LANDFILL, AND THE FORMER DRUM STORAGE AREAS. THIS FIRST OPERABLE UNIT RECORD OF DECISION ADDRESSES THE SOIL CONTAMINATION IN THE ASH PILE AREA AND OTHER AREAS WHERE THE LEAD CONCENTRATION EXCEEDS THE BACKGROUND RANGE. THE PRIMARY CONTAMINANT OF CONCERN AFFECTING THE SOIL IS LEAD.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES REPAIRING THE 29,000-SQUARE FOOT ASH PILE COVER, CAPPING OTHER AREAS WHERE LEAD CONTAMINATION EXCEEDS 300 MG/KG; MONITORING GROUNDWATER AND SURFACE WATER; IMPLEMENTING SITE ACCESS RESTRICTIONS AND INSTITUTIONAL CONTROLS INCLUDING LAND AND GROUNDWATER USE AND DEED RESTRICTIONS; AND PERFORMING A GROUNDWATER VERIFICATION STUDY TO DETERMINE WHETHER ANY GROUNDWATER REMEDIATION IS NECESSARY. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $1,037,000, WHICH INCLUDES AN ANNUAL O&M OF $81,450 FOR YEAR ONE AND $30,550 FOR YEARS 2-30.

PERFORMANCE STANDARDS OR GOALS: BY REPAIRING THE ASH COVER AND CAPPING THE LEAD-CONTAMINATED AREAS EXCEEDING LEAD 300 MG/KG, THE REMEDIAL ACTION WILL REDUCE THE HAZARD INDEX TO BELOW THE TARGET OF ONE.
 
Remedy:  THE PRIMARY OBJECTIVE OF THE SELECTED REMEDY IS TO PREVENT RISK TO PUBLIC HEALTH AND TO THE ENVIRONMENT THROUGH DERMAL CONTACT OR INGESTION OF CONTAMINATED SOILS. THE SELECTED REMEDY ADDRESSES THE PRINCIPAL THREATS TO HUMAN HEALTH PRESENTLY POSED BY THE SITE. INSTITUTIONAL CONTROLS WILL PROHIBIT FUTURE DEVELOPMENT AND POTABLE USE OF ONSITE GROUNDWATER, AND USE OF THE SITE IN A MANNER THAT MAY PERMIT CONTACT WITH THE CONTAMINATED SOILS. A FENCE WILL BE CONSTRUCTED AROUND THE PERIMETER OF THE SITE TO PREVENT UNAUTHORIZED ACCESS. GROUNDWATER AND SURFACE WATER WILL BE MONITORED ON A CONTINUING BASIS TO DETERMINE IF ANY CONTAMINATION HAS MIGRATED FROM THE SITE, AND TO ASSESS ANY VARIATIONS IN WATER QUALITY. REPAIRS WILL BE MADE TO THOSE PORTIONS OF THE ASH PILE CAP THAT WERE DISTURBED SUBSEQUENT TO PLACEMENT OF THE ORIGINAL CAP IN 1984. OTHER AREAS OF THE SITE WHERE THE LEVELS OF LEAD EXCEED 300 PARTS PER MILLION WILL ALSO BE CAPPED WITH CLAY.

THE CAP REPAIR CONSISTS OF THE FOLLOWING MAJOR COMPONENTS;

* GRADING AND COMPACTION OF THE EXISTING GROUND SURFACE.
* PLACEMENT AND COMPACTION OF A TWO-FOOT THICK CLAY COVER.
* DUST CONTROL DURING GRADING AND COVER PLACEMENT.
* REVEGETATION OF THE COVER.
* LONG-TERM MONITORING OF THE COVER FOR EROSION AND SETTLEMENT DAMAGE.

A GROUNDWATER VERIFICATION STUDY WILL ALSO BE CONDUCTED AS PART OF THE SELECTED REMEDY TO DETERMINE IF ANY REMEDIATION OF THE ONSITE AND OFFSITE GROUNDWATER IS REQUIRED. A SUBSEQUENT AND FINAL ROD WILL BE PREPARED THAT WILL ADDRESS ANY FURTHER REMEDIATION THAT MAY BE REQUIRED AT THIS SITE.
 
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