||Superfund record of decision : Watkins-Johnson (Stewart Division), CA : first remedial action - final.
||United States. Environmental Protection Agency.
|| U.S. Environmental Protection Agency, Office of Emergency and Remedial Response ; Reproduced by National Technical Information Service,
Hazardous waste sites--California
Hazardous materials ;
Waste treatment ;
Pollution control ;
Industrial wastes ;
Waste disposal ;
Ground water ;
Vacuum apparatus ;
Activated carbon treatment ;
Cost analysis ;
Water pollution control ;
First Remedial Action ;
Santa Cruz County(California) ;
Record of Decision ;
Volatile organic compounds
||Some EPA libraries have a fiche copy filed under the call number shown.
||The Watkins-Johnson site is an active research and development, manufacturing, and industrial complex in Santa Cruz County, five miles north of Santa Cruz, California. The Watkins-Johnson Company has owned and operated the complex since 1963, conducting such activities as: metal machining, degreasing, metal plating, and photo laboratory activities. During these activities, a variety of organics, inorganics and metals were used. The primary contaminants of concern affecting the soil and ground water are VOCs including PCE and TCE, and metals including silver. The selected remedial action for the site includes soil vapor (vacuum) extraction with pretreatment of extracted vapors using GAC prior to ambient discharge; capping and grading contaminated soil areas to minimize the potential for mobilization of soil contaminants to the ground water; installing infiltration leachfields to prevent offsite migration of ground water contaminants in the perched zone; installing gravity drains to transfer the contaminated ground water from the perched zone to the regional aquifer zone for subsequent extraction; ground water pumping and onsite treatment to remove contamination from both the perched and regional zones using GAC adsorption with offsite regeneration of spent carbon. The estimated present worth cost for this remedial action is $2,156,243, which includes an estimated annual O and M cost of $167,820.
||"06/29/90." "PB91-921411." "EPA/ROD-R09-90-046." "Office of Emergency and Remedial Response."
||Washington, D.C. Springfield, VA
||Paper copy available on Standing Order, deposit account required (minimum deposit $150 U.S., Canada, and Mexico; all others $300). Single copies also available in paper copy or microfiche.
|Corporate Au Added Ent
||United States. Environmental Protection Agency. Office of Emergency and Remedial Response.
|PUB Date Free Form
||PC A03/MF A01
|OCLC Time Stamp
|OCLC Rec Leader
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