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Record of Decision System (RODS)

BYRON SALVAGE YARD

Abstract

Site Name:  BYRON SALVAGE YARD
Address:  NW1/4 SEC 13 T24N R10E 
City & State:  BYRON  IL  61010
County:  OGLE
 
EPA ID:  ILD010236230
EPA Region:  05
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-89/089
ROD Date:  06/30/1989
Operable Unit(s):  03
 
Media:  GROUNDWATER
 
Contaminant:  ARSENIC, BENZENE, CHROMIUM, LEAD, METALS, PCE, TCE, VOCS
 
Abstract:  THE BYRON SALVAGE YARD SITE IS IN RURAL OGLE COUNTY, ILLINOIS AND IS APPROXIMATELY 3 MILES SOUTHWEST OF THE CITY OF BYRON. THE SITE, WHICH INCLUDES THE BYRON SALVAGE YARD AND DIRK'S FARM, IS BORDERED BY A FOREST PRESERVE DISTRICT TO THE NORTH, AN OPERATING NUCLEAR PLANT TO THE SOUTHEAST, RESIDENTIAL PROPERTY TO THE SOUTH, AND AN OPEN FIELD TO THE WEST. THE SITE IS BISECTED BY TWO 15 TO 30 FEET DEEP RAVINES DRAINING SURFACE WATER RUNOFF THROUGH THE RAVINE WATERWAYS TO THE SOUTH BRANCH OF WOODLAND CREEK, WHICH FLOWS TO THE ROCK RIVER. DURING THE 1960S THE SALVAGE YARD OWNER ACCEPTED MISCELLANEOUS WASTES AND DEBRIS FOR DISPOSAL INCLUDING DRUMS OF ELECTROPLATING WASTES, OIL SLUDGES, CUTTING WHEELS, SOLVENTS, AND SCRAP METAL. INDUSTRIAL WASTE DUMPING REPORTEDLY OCCURRED ON THE SITE DURING PERIODS OF HEAVY RAINFALL SO THAT MOST OF THE WASTE WOULD BE CARRIED OFFSITE BY THE RESULTING SURFACE WATER RUNOFF. IN 1976 THE ILLINOIS EPA DOCUMENTED THE PRESENCE OF CYANIDE AND HEAVY METALS IN SOIL, SURFACE WATER, AND GROUND WATER IN AND AROUND THE SITE. IN 1986 THE STATE INITIATED CLEANUP ACTIVITIES WHICH INCLUDED EXCAVATING BURIED DRUMS FROM THE RAVINES; REMOVING SURFACE DRUMS; EXCAVATING SOIL HEAVILY CONTAMINATED BY HEAVY METALS OR ORGANICS; AND EXCAVATING SOIL WITH CONCENTRATIONS 100 MG/KG OR GREATER OF CYANIDE. IN SITU TREATMENT OF CYANIDE-CONTAMINATED SOIL LESS THAN 100 MG/KG WAS PERFORMED BUT LOW LEVELS OF CYANIDE STILL REMAIN. WATER QUALITY SAMPLING, PERFORMED IN 1984, REVEALED THAT OFFSITE GROUND WATER WAS CONTAMINATED WITH VOCS, PRIMARILY TCE. THE TWO AQUIFERS WHICH UNDERLIE AND SURROUND THE SITE CONTAIN ELEVATED LEVELS OF VOCS, METALS, AND CYANIDE. PRIVATE RESIDENTIAL WATER SUPPLY WELLS THAT WERE AFFECTED BY THE CONTAMINATED GROUND WATER WERE TEMPORARILY SUPPLIED WITH BOTTLED DRINKING WATER. IN 1986 AN EPA-APPROVED EMERGENCY ACTION LED TO THE INSTALLATION OF IN-HOUSE CARBON FILTRATION UNITS AT TEN RESIDENCES IN THE ROCK RIVER TERRACE SUBDIVISION LOCATED A 1/2 MILE NORTHWEST OF THE SITE. A 1986 STATE RECORD OF DECISION EXTENDED THE MUNICIPAL WATER SUPPLY SYSTEM FROM BYRON TO THE ROCK RIVER TERRACE SUBDIVISION. THIS OPERABLE UNIT ADDRESSES THE GROUND WATER CONTAMINATION EMANATING FROM THE SITE AND IS THE THIRD OF FOUR OPERABLE UNITS. THE PRIMARY CONTAMINANTS AFFECTING THE GROUND WATER ARE VOCS INCLUDING BENZENE, PCE, AND TCE; METALS INCLUDING ARSENIC, CHROMIUM, AND LEAD; AND CYANIDE.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES REMOVING ALL WASTES GENERATED DURING THE REMEDIAL INVESTIGATION; ADDING A ONE-FOOT SOIL COVER TO THE AFFECTED PORTIONS OF THE SITE AND REGRADING AND REVEGETATING THE NEW SURFACE; MONITORING SURFACE AND GROUND WATER; PLUGGING AND ABANDONING MONITORING WELLS NO LONGER IN USE; PROVIDING AN ALTERNATE SOURCE OF DRINKING WATER BY EXTENDING THE WATER MAIN OF THE MUNICIPAL SYSTEM TO 27 ADDITIONAL RESIDENCES; AND IMPLEMENTING INSTITUTIONAL CONTROLS. THE ESTIMATED PRESENT WORTH COST IS $1,100,000, WHICH INCLUDES ANNUAL O&M COSTS OF $16,000.
 
Remedy:  THE FUNCTION OF THIS OPERABLE UNIT IS TO ADDRESS THE GROUNDWATER CONTAMINATION EMANATING FROM THE BYRON SALVAGE YARD SITE. THE MAJOR COMPONENTS OF THE SELECTED REMEDY INCLUDE;

* EXTENDING THE BYRON MUNICIPAL WATER SUPPLY SYSTEM TO RESIDENTS OF AN ADDITIONAL 27 RESIDENCES CURRENTLY IN DANGER OF INGESTING CONTAMINATED GROUNDWATER.
* REMOVING ALL WASTES FROM THE BYRON SALVAGE YARD PORTION OF THE SITE GENERATED DURING THE REMEDIAL INVESTIGATION (RI) CONDUCTED BY THE US EPA.
* INSTALLING, SAMPLING, AND ANALYZING ADDITIONAL COMPLIANCE MONITORING WELLS AT OR NEAR THE ROCK RIVER.
* PERFORMING SURFACE WATER, RESIDENTIAL WELL, AND MONITORING-WELL SAMPLING AND ANALYSIS ON A LONG-TERM BASIS.
* PLUGGING AND ABANDONING MONITORING WELLS NOT SELECTED FOR LONG-TERM MONITORING.
* INSTITUTIONAL CONTROLS (INCLUDING SUCH THINGS AS DEED RESTRICTIONS OR MANDATORY HOOK-UPS TO AVAILABLE PUBLIC WATER SUPPLIES), PLUGGING AND ABANDONING RESIDENTIAL WELLS, AND/OR OTHER SUCH ACTIONS WHICH WILL PROVIDE ENFORCEABLE MEASURES THAT WILL PRECLUDE HUMAN EXPOSURE TO THE CONTAMINATED GROUNDWATER AT ANY POINT BETWEEN THE SITE BOUNDARY AND ALL KNOWN AND PROJECTED POINTS OF ENTRY OF SUCH GROUNDWATER INTO SURFACE WATER.
 
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