THE WILLIAM DICK LAGOONS SITE IS LOCATED IN WEST CALN TOWNSHIP, CHESTER COUNTY, PENNSYLVANIA. THE 4.4 ACRE SITE IS LOCATED WITHIN A LARGER 105 ACRE PARCEL OF LAND IN A RUR- AL WOODED SETTING. THE SITE WAS USED BY ITS FORMER OWNER, WILLIAM DICK (NOW DECEASED) FOR DISPOSAL OF FINAL RINSE WATERS FROM THE INTERIOR CLEANING OF TANK TRAILERS OWNED BY CHEMICAL LEAMAN TANK LINES, INC. (CLTL). AS A RESULT, THE SITE IS CONTAMINATED BY NUMEROUS ORGANIC COMPOUNDS; THE MOST PREVALANT, TCE, HAS BEEN FOUND IN SOME 46 RESIDENTIAL WELLS. THE SITE WAS LISTED ON THE NPL IN JULY 1987. CLTL HAS PERFORMED A RI/FS AND OTHER REMOVAL ACTIVITIES AT THE SITE. BASED ON THE FINDINGS OF THE RI/FS, EPA DIVIDED THE SITE IN- TO THREE OPERABLE UNITS AND A ROD FOR #OU1 AND #OU2 WAS ISSUED ON JUNE 28, 1991. THE ROD REQUIRES: 1. EXTENSION OF THE CITY OF COATESVILLE AUTHORITY WATER LINE; 2. UPGRADING THE PUMP STATION LOCATED ON ROUTE #340 AND INSTALLATION OF A WATER STORAGE TANK; 3. INSTITUTIONAL CONTROLS TO ADDRESS THE DRILLING OF NEW WELLS IN THE CONTAMINATION PLUME AND PROTECTION THE HEALTH OF THOSE RESIDENTS CHOOSING TO MAINTAIN THE USE OF PRIVATE WELLS; 4. FURTHER STUDY TO DEFINE SITE HYDROGELOGIC CONDITIONS; 5. INSTALLATION OF GROUNDWATER EXTRACTI