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Record of Decision System (RODS)

MIAMI COUNTY INCINERATOR

Abstract

Site Name:  MIAMI COUNTY INCINERATOR
Address:  2200 N COUNTY RD 
City & State:  TROY  OH  45337
County:  MIAMI
 
EPA ID:  OHD980611800
EPA Region:  05
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-89/094
ROD Date:  06/30/1989
Operable Unit(s):  01
 
Media:  GROUNDWATER SOIL
 
Contaminant:  VOCS, TCE, PCE, TOLUENE, ORGANICS, PAHS, PCBS, DIOXIN, LEAD
 
Abstract:  THE MIAMI COUNTY INCINERATOR SITE IS IN CONCORD TOWNSHIP, OHIO. THE 65-ACRE SITE IS APPROXIMATELY 1500 FEET WEST OF THE GREAT MIAMI RIVER; THE ELDEAN TRIBUTORY OF THE RIVER RUNS ACROSS THE NORTHWEST CORNER OF THE SITE. THE SITE CONSISTS OF THE INCINERATOR BUILDING AND ADJACENT PROPERTY, INCLUDING A FORMER SCRUBBER WASTEWATER LAGOON, AN ASH DISPOSAL PIT, AN ASH PILE, A LIQUID DISPOSAL AREA, AND TRENCH AND FILL LANDFILL AREAS NORTH AND SOUTH OF THE ELDEAN TRIBUTORY. OPERATIONS BEGAN IN 1968, WHEN LARGE QUANTITIES OF SPENT SOLVENTS, OILS, AND DRUMMED AND BULK INDUSTRIAL SLUDGES WERE ACCEPTED FOR DISPOSAL. THE FACILITY GENERATED SCRUBBER WASTEWATER AND ASH QUENCH WATER, WHICH WERE DISPOSED OF IN THE WASTEWATER LAGOON. INCINERATOR FLY ASH AND BOTTOM ASH, NON-COMBUSTIBLE MATERIALS, AND UNBURNED REFUSE WERE DISPOSED OF IN A LANDFILL NORTH OF THE TRIBUTARY, AND AN ESTIMATED 104,000 TO 150,000 BARREL-EQUIVALENTS OF LIQUID WASTE WERE DUMPED OR BURIED ONSITE. AFTER CLOSURE OF THE FACILITY IN 1983, THE OHIO EPA FOUND DETECTABLE LEVELS OF CHLORINATED HYDROCARBONS IN DRINKING WATER WELLS NEAR THE SITE. THREE RESIDENCES, THE MIAMI COUNTY HIGHWAY GARAGE, AND THE INCINERATOR FACILITY WERE SUPPLIED WITH ALTERNATE WATER SUPPLIES IN 1986. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE SOIL AND GROUND WATER ARE VOCS INCLUDING PCE, TOLUENE, AND TCE; OTHER ORGANICS INCLUDING PCBS, PAHS, DIOXIN, AND PESTICIDES; AND METALS INCLUDING LEAD.

THE SELECTED REMEDIAL ACTIONS FOR THIS SITE ARE SPECIFIC TO EACH AREA OF CONTAMINATION AND INCLUDE EXCAVATION AND ONSITE CONSOLIDATION OF ASH WASTES AND CONTAMINATED SOILS ONTO THE LANDFILLS WITH CAPPING OF LANDFILLS AND PREVIOUSLY EXCAVATED AREAS; PUMPING AND TREATMENT OF GROUND WATER WITH DISCHARGE TO POTW; VAPOR/VACUUM EXTRACTION OF LIQUID DISPOSAL AREA USING CARBON FILTERS; CONTINUED TESTING OF SOILS, ASH, AND TRIBUTARY SEDIMENT; AND PROVISION OF AN ALTERNATE WATER SUPPLY FOR AREA RESIDENTS AND BUSINESSES. THE ESTIMATED PRESENT WORTH FOR THIS REMEDIAL ACTION IS $19,400,000, WHICH INCLUDES AN ESTIMATED O&M COST OF $4,666,000.
 
Remedy:  THIS SITE HAS SEVEN AREAS OF CONCERN. THE SELECTED REMEDIAL ALTERNATIVE FOR EACH OF THESE AREAS IS:

A. SOUTH LANDFILL - CLOSURE ACCORDING TO STATE SANITARY LANDFILL REQUIREMENTS. THE MAJOR COMPONENTS OF THE SELECTED ALTERNATIVE ARE:

* FENCE LANDFILL AREA AND POST WARNING SIGNS
* DEED NOTIFICATIONS/PROPERTY USE RESTRICTIONS TO PROHIBIT USE OF GROUNDWATER AND PREVENT EXPOSURE TO CONTAMINANTS
* ONGOING MONITORING
* GRADE AND CAP LANDFILL WITH SINGLE BARRIER CAP.
B. NORTH LANDFILL - CLOSURE ACCORDING TO STATE SANITARY LANDFILL REQUIREMENTS. THE MAJOR COMPONENTS OF THE SELECTED ALTERNATIVE ARE:

* FENCE LANDFILL AREA AND POST WARNING SIGNS
* DEED NOTIFICATION/PROPERTY USE RESTRICTIONS TO PROHIBIT USE OF GROUNDWATER AND PREVENT EXPOSURE TO CONTAMINANTS
* ONGOING MONITORING
* GRADE AND CAP LANDFILL WITH SINGLE BARRIER CAP.

C. ASH DISPOSAL PIT AND ASH PILE - REMOVE TO NORTH OR SOUTH LANDFILL. THE MAJOR COMPONENTS OF THE SELECTED ALTERNATIVE ARE:

* EXCAVATION AND CONSOLIDATION OF ASH WASTES AND CONTAMINATED SOILS ONTO THE NORTH OR SOUTH LANDFILL
* BACKFILL AND VEGETATE EXCAVATED AREAS
* TREATMENT IF REQUIRED UNDER RCRA.

D. LIQUID DISPOSAL AREA AND GROUNDWATER VAPOR EXTRACTION, GROUNDWATER PUMP AND TREATMENT, CAPPING. THE MAJOR COMPONENTS OF THE SELECTED ALTERNATIVE ARE:

* ONGOING MONITORING
* GRADE AND CAP SITE WITH DOUBLE BARRIER CAP
* VACUUM EXTRACTION OF VOCS FROM WASTE AND SOILS
* VAPOR PHASE CARBON TREATMENT OR EQUIVALENT, CATALYTIC OXIDATION OR OTHER APPROPRIATE TREATMENT OF THE EXHAUST
* PUMP AND TREAT CONTAMINATED GROUNDWATER WITH DISCHARGE TO TROY POTW WITH PRETREATMENT, IF NECESSARY
* CONTINUE CONNECTION OF RESIDENTIAL AND COMMERCIAL GROUNDWATER USERS TO A POTABLE WATER SUPPLY.

E. FORMER SCRUBBER WASTEWATER LAGOON. TEST SOILS/ASH FOR COMPLETE CLP ORGANIC/INORGANIC PARAMETERS INCLUDING CYANIDE COMPOUNDS. AN EVALUATION WILL THEN BE CONDUCTED TO DETERMINE IF ANY FURTHER ACTIONS ARE REQUIRED. THE SAME TYPE OF EVALUATION AS CONDUCTED IN THE ENDANGERMENT ASSESSMENT (EA) FOR OTHER SITE AREAS WILL BE CONDUCTED.

F. STAINED SOIL AREA. NO ACTION.

G. ELDEAN TRIBUTARY. TESTING OF SEDIMENTS WILL BE CONDUCTED TO DETERMINE THE SOURCE OF CONTAMINANTS IN THE AREA. SAMPLES WILL BE ANALYZED FOR BASE-NEUTRAL COMPOUNDS, PESTICIDES, PCBS AND CYANIDE.

H. GROUNDWATER USERS. CONNECTION TO CITY OF TROY WATER SUPPLY.
 
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