Analysis Labs for residual radioactivity

["Augusto A Cordova 695-2737 (Fa"@usa.dupont.com (Fa"]

	I am seeking an analytical laboratory capable of analyzing incinerator 
ash for the presence of H-3, C-14 and S-35.  The lab needs to be able to meet 
the detection limits provided by the NRC for unrestricted release of 
incinerator ash (H-3: 220 dpm/gm; C-14: 6.6 dpm/gm; S-35: 220 dpm/gm).  The lab 
used previously, Controls for Environmental Pollution, Inc., (CEP) recently 
went out of business.  CEP chemically separated carbon and sulfur from the ash 
in order to distinguish between the beta emissions due to S-35 and C-14.

	Analysis requires determination of Minimal Detectable Activity (MDA) 
and Recovery for the particular method use and the radionuclide; this includes 
the following QA/QC features: lab spike, matrix blank, matrix spike.

	I would appreciate any information on analytical laboratories capable 
of the above analysis.  Since this is a request of limited interest to the 
RADSAFE community please do not respond directly through RADSAFE.  Instead 
contact me by phone, fax or e-mail as shown below.  Thank you.

					Augusto Cordova
					Radiation Safety Officer
					DuPont Experimental Station
					P.O. Box 80272
					Wilmington, DE  19880-0272
					e-mail: cordova@a1.esvax.umc.dupont.com
					phone: (302) 695-2737
					fax: (302) 695-8489