Constnuction Company for construction of the leachate transfer system which is completed and operational by 4/92. This system begins to dewater the leachate mounds in the 2 lined cells and assists in .the management of leachates from the original cell. The County holds a public hearing in the Village on their Draft Environmental Impacts Statement:Proposed Dredging for Materials Delivery:CPSLm. Due t o several issues the County does not pursue the dredging option and final design activities begin. . EXHIBIT B: PROJECT CHRONOLOGY continued 4/1992 The DEC approves the final "Design Plans and Speaifications for Capping: CPSL" and authorizes the County to solidt contractors. 1011992 The DEC accepts the final submission entitled "Fijnal RI/FS reports:CPSL" and utilizes the report to prepare this PRAP. The County awards a contract to construct the can at CPSL for a Total capitol cost of $24,400,000 top Brairwood aonstruction Co. NEW YORK STATE DEPARRIENT OF ENVIRONMENTAL CONSERVATION DIVISION OF WARDOUS UASTP RlXCDlATlDN INACTIVE HAZARDOUS WASTE DISPOSAL REPORT CLASSIFICATION CODE: REGION: 3 2 SITE CODE: 360001 EPA ID: NYD980508055 NAME OF SITE : Croton Point Sanitary Landfill STREET ADDRESS: Croton Point Avenue TOWNICITY: COUNTY: Croton-on-Hudson Westchester SITE TYPE: Oven DumpESTIMATED 5 - 2 Z : 100 StructureAcres Lagoon- ZIP: 10520 Landfill-X Treatment Pond- SITE OWNERIOPERATOR INFORHATION: County of Westchester 148 Martine Avenue. m i t e P l a i n s , NY OWNER(S) DURING USE...: County of Westchester County of Westchester OPERATOR DURING USE...: OPERATOR ADDRESS......: 148 Martine Avenue. White P l a i n s , NY PERIOD ASSOCIATED WITH HAZARDOUS WASTE: From apx.1951 To 1973 CURRENT OWNER NAME....: CURRENT OWNER ADDRESS.: SITE DESCRIPTION: This s i t e encompasses t h e old l a n d f i l l a r e a , on a '2 mile long p e d i n s u l a on t h e e a s t e r n shore of t h e Hudson River located southwest of t h e Village/ of Croton-onHudson. It was operated as a l a n d f i l l between 1927 and 1978 and 4s closed. The, peninsula a l s o contains a County Park including a bathing beach ar/d a camping area. Mvnerous s t u d i e s have documented a s i g n i f i c a n t impact on tQe surrounding ) been environment from t h e l a n d f i l l . NYS groundwater standards (Class 4 ~ have exceeded f o r c h l o r i d e s , iron. manganese. phenols. lead, and benzeqe. Numerous organics have been detected i n leachate sediment. Hazardous waste/ d i s p o s a l a t this s i t e has been confirmed through RTK information. NYS freshwater wetlands a r e inmediately adjacent t o the s i t e . .A lithium b a t t e r y f i r e o c w r e d i n April 1981. Leachate discharges from t h e l a n d f i l l i n t o t h e Hudson Rived have been documented. a A DEE consent order has been signed f o r an RIlFS and remedial a c t on with EQBA funding. The RI/Fs i s i n progress. The l a n d f i l l cap i s i n t h e d s i g n stage. The l e a c h a t e c o l l e c t i o n system i s i n progress. Construction of idachate of 1991. t r a n s f e r l i n e s began i n the 6-r WARDOUS WASTE DISPOSED: TYPE Confirmed-X SuspectedQUANTITY ( u n i t s ) -----------------*---------- Mixtures of Flammable Liquids (D001) Phosphoric Acid (U145) Trichloroethane (U226) Methylene Chloride (UO8O) Rinsewater f o r Phosphoric Acid (0145) C1 25 Tons 495 Gallons 555 Gallons 440 Gallons 495 Gallons Page 3 - 237 SITE CODE: 360001 ANALYTICAL DATA AVAILABLE: Air- Surface Water-X Groundwater-X Soil- CONTRAVENTION OF STANDARDS: Groundwater-X Drinking Water- Sediment-X Surface Water-X Air- LEGAL ACTION: TYPE..: Consent Order-DEE State- X STATUS : Negotiation in Progress- - FederalOrder Signed- X REMEDIAL ACTION: Proposed- Under design-X In Progress- Cwupleted- NATLTRE OF ACTION: Engineered capping systems, leachate coll+ction GEOTECHNICAL IINFOFNATION: SOIL TYPE: Sand, peat, silt. and clay GROUNDWATER DEPTH: Unlined part of L.F. 'below GW table ASSESSMENT OF ENVIRONMENTAL PROBLEMS: Several areas of environmental degradation have been identikied. Disposal of hazardous wastes has been confirmed. Groundwatler contamination is possible. Subsurface discharges to the Hudson Rivek may endanger the fishery. ASSESSHENT OF HEALTH.PROBLEMS: The landfill is located next to