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Record of Decision System (RODS)

WILLIAM DICK LAGOONS

Abstract

Site Name:  WILLIAM DICK LAGOONS
Address:  TELEGRAPH ROAD 
City & State:  WEST CALN TOWNSHIP  PA  19376
County:  CHESTER
 
EPA ID:  PAD980537773
EPA Region:  03
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-91/137
ROD Date:  06/28/1991
Operable Unit(s):  01
 
Media:  GROUNDWATER
 
Contaminant:  VOCS, BENZENE, PCE, TCE, ORGANICS, PHENOL, METALS
 
Abstract:  THE 4.4-ACRE WILLIAM DICK LAGOONS SITE IS A CHEMICAL WASTEWATER DISPOSAL SITE IN WEST CALN TOWNSHIP, CHESTER COUNTY, PENNSYLVANIA. LAND USE IN THE AREA IS PREDOMINANTLY RESIDENTIAL AND AGRICULTURAL, WITH ADJACENT WOODLANDS. AN ESTIMATED 30 RESIDENCES LOCATED WITHIN 1,000 FEET OF THE SITE USE PRIVATE WELLS FOR THEIR DRINKING WATER SUPPLY. TWO OTHER SUPERFUND SITES ARE NEAR THE SITE: THE BLOSENSKI LANDFILL LOCATED 1.7 MILES SOUTHEAST; AND THE WELSH LANDFILL, 5 MILES TO THE NORTHWEST. ORIGINALLY, THE SITE CONSISTED OF THREE UNLINED EARTHERN LAGOONS OR PONDS COVERING 2.2 ACRES AND AN ASSOCIATED BORROW AREA. FROM THE 1950'S TO 1970, MR. WILLIAM DICK USED THE LAGOONS TO DISPOSE OF WASTEWATER LEFT FROM CLEANING THE INTERIORS OF CHEMICAL AND PETROLEUM TANK TRAILERS OWNED PRIMARILY BY CHEMICAL LEAMAN TANK LINES, (CLTL), AND RESIDUAL CHEMICAL PRODUCTS. IN 1970, THE STATE ORDERED THE LAGOONS CLOSED AFTER 37 WILD GEESE DESCENDED INTO THE LAGOONS, AND WERE COATED WITH WASTE. LATER IN 1970, VANDALISM CAUSED THE RELEASE OF AN ESTIMATED 300,000 GALLONS OF WASTEWATER INTO BIRCH RUN, A TRIBUTARY OF THE WEST BRANCH OF BRANDYWINE CREEK. AS A RESULT OF THIS DISCHARGE, MORE THAN 2,600 FISH DIED, AND WATER SUPPLIES THAT USED BRANDYWINE CREEK AS A WATER SOURCE WERE CLOSED. IN 1971, WILLIAM DICK AND CLTL BEGAN LAGOON CLOSURE AS PART OF A STATE AGREEMENT. ACTIVITIES DURING 1971 INCLUDED THE ADDITION OF ALUM TO THE WASTEWATER, SPRAY IRRIGATION OF THE TREATED WASTEWATER INTO THE WOODS, AND COVERING AND REVEGETATING LAGOONS WITH SOIL. DURING 1985, SITE STUDIES IDENTIFIED NUMEROUS ORGANIC COMPOUNDS IN SOIL SAMPLES, TWO SPRING-FED WATER SUPPLIES, AND FIVE WELLS. IN 1988, EPA REQUIRED CLTL TO FENCE AROUND THE SITE, CONDUCT YEARLY MONITORING OF RESIDENTIAL WELLS, AND INSTALL POINT-OF-ENTRY TREATMENT SYSTEMS FOR SELECTED PRIVATE WELLS. IN 1990 AND 1991, SAMPLING REVEALED TCE AND OTHER CONTAMINANTS IN 30 TO 40 PRIVATE WELLS. AS A RESULT, CLTL INSTALLED POINT-OF-ENTRY CARBON FILTRATION UNITS IN 12 OF THE 30 TO 40 HOMES WHERE CONTAMINATION IN WELL WATER EXCEEDED MCLS. THIS RECORD OF DECISION (ROD) PROVIDES AN INTERIM REMEDY AND ADDRESSES CONTAMINATED RESIDENTIAL WATER AS OPERABLE UNIT 1 (OU1) AND GROUND WATER AS OU2. A FUTURE ROD WILL ADDRESS SOURCE CONTROL AND WILL PROVIDE A REMEDY FOR THE CLEANUP OF CONTAMINATED SOIL. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE GROUND WATER ARE VOCS INCLUDING BENZENE, PCE, AND TCE; OTHER ORGANICS INCLUDING PHENOL; AND METALS.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES PROVIDING AN ALTERNATE WATER SUPPLY TO AFFECTED RESIDENCES BY EXTENDING THE CITY OF COATESVILLE AUTHORITY'S WATER LINE; INSTALLING A WATER STORAGE TANK NEAR THE SITE TO PROVIDE STORAGE AND PRESSURE FEED FOR THE WATER LINE CONNECTIONS; MONITORING NEARBY SPRINGS; COLLECTING HYDROGEOLOGIC DATA; CONDUCTING INITIAL PUMPING AND ONSITE TREATMENT OF THE CONTAMINATED GROUND WATER PLUME USING TREATMENT COMPONENTS THAT WILL BE SELECTED DURING INTERIM REMEDIAL DESIGN, WHICH ARE EXPECTED TO INCLUDE CHEMICAL PRECIPITATION AND ONE OF MORE OF THE FOLLOWING: GRANULAR ACTIVATED CARBON, CHEMICAL OXIDATION, AND AIR STRIPPING, WITH POSSIBLE EMISSION CONTROLS; DISCHARGING THE TREATED WATER ONSITE TO SURFACE WATER; INSTALLING MONITORING AND RECOVERY WELLS TO FURTHER CHARACTERIZE THE ENTIRE PLUME; AND IMPLEMENTING INSTITUTIONAL CONTROLS INCLUDING GROUND WATER USE RESTRICTIONS. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION RANGES FROM $5,991,000 TO $7,028,000, WHICH INCLUDES AN ANNUAL O&M COST OF $305,000 TO $330,000 FOR YEARS 0-5, AND $21,000 TO 46,000 FOR YEARS 6-30.

PERFORMANCE STANDARDS OR GOALS; FOR OU2, EPA IS INVOKING A WAIVER FOR FEDERAL AND STATE GROUND WATER CLEAN-UP STANDARDS BECAUSE THE REMEDIAL ACTION IS AN INTERIM MEASURE. CHEMICAL-SPECIFIC GROUND WATER CLEAN-UP GOALS WILL BE SET IN THE FINAL REMEDY.
 
Remedy:  IN THIS ROD, THE ENVIRONMENTAL PROTECTION AGENCY (EPA) HAS SELECTED REMEDIES FOR OPERABLE UNITS 1 AND 2. THE MAJOR COMPONENTS OF EACH ARE AS FOLLOWS;

ALTERNATE WATER SUPPLY

* THE CITY OF COATESVILLE AUTHORITY (CCA) WATER LINE WILL BE EXTENDED FROM ITS CURRENT LOCATION ON STATE ROUTE 340 TO SERVICE IMPACTED OR POTENTIALLY IMPACTED RESIDENTS LOCATED NEAR THE WILLIAM DICK LAGOONS SITE.
* THE PUMP STATION LOCATED ON ROUTE 340 NEAR SANDY HILL ROAD WILL BE UPGRADED TO MEET ADDITIONAL PUMPING NEEDS, AND A WATER STORAGE TANK WILL BE INSTALLED NEAR THE SITE.
* AS AVAILABLE, THROUGH APPROPRIATE LEGAL AUTHORITY, INSTITUTIONAL CONTROLS WILL BE IMPLEMENTED TO: (A) ADDRESS WATER SUPPLY ISSUES FOR NEWLY CONSTRUCTED HOMES NEAR THE SITE, AND (B) PROTECT THE HEALTH OF THOSE RESIDENTS CHOOSING TO MAINTAIN THE USE OF PRIVATE WELLS.

GROUNDWATER

THIS REMEDY IS CONSIDERED AN INTERIM ACTION FOR GROUNDWATER CLEANUP BECAUSE FINAL GROUNDWATER CLEANUP LEVELS CANNOT BE DETERMINED AT THIS TIME. A FINAL ACTION ADDRESSING GROUNDWATER WILL BE SELECTED IN A LATER ROD AFTER THE DATA GATHERED DURING THE IMPLEMENTATION OF THE INTERIM ACTION ARE EVALUATED.

THE INTERIM REMEDY CONTAINS THE FOLLOWING MAJOR COMPONENTS;
* FURTHER STUDY WILL BE PERFORMED TO ADEQUATELY DEFINE SITE HYDROGEOLOGIC CONDITIONS. THIS WORK WILL INCLUDE THE INSTALLATION AND SAMPLING OF MONITORING WELLS, COLLECTION OF WATER LEVEL MEASUREMENTS, AND PERFORMANCE OF AQUIFER TESTS.
* GROUNDWATER EXTRACTION WELLS WILL BE INSTALLED AT AND SURROUNDING THE SITE. GROUNDWATER WILL BE PUMPED TO A TREATMENT PLANT DESIGNED AND CONSTRUCTED TO REMOVE SITE-RELATED CONTAMINANTS. THE ACTUAL TREATMENT COMPONENTS OF THE PLANT WILL BE DETERMINED DURING THE INITIAL PHASES OF THIS REMEDY.
* TREATED GROUNDWATER WILL BE DISCHARGED TO A NEARBY STREAM.
* GROUNDWATER MONITORING OF SELECTED WELLS WILL BE.
 
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