Page No. 1 of 1                                        VISITT 3.0
    12/10/96

(s3B
                 Vendor Name:  BILLINGS & ASSOCIATES, INC.                 
              Technology Type:  BIOREMEDIATION - IN SITU SOIL              
(s0B

  ________________________________________________________________________
 Technology Trade Name:  Subsurface Volatilization and Ventilation System 

     Address:   3816 Academy Pkwy N-N.E.                          
                                                                  
     City:      Albuquerque, New Mexico  87109
                USA                 
     Contact:   Dr. Gale K. Billings                    
     Title:     General Manager                         
     Phone:     (505) 345-1116
     Fax:       (505) 345-1756
     Status:    Full scale
  ________________________________________________________________________


                          DESCRIPTION OF TECHNOLOGY

The SVVS Remediation Technology, developed by Billings &  Associates,Inc., is
now in operation at 30 sites, including a SITE  program site in Buchanan,
Michigan.  The technology is in situ, and  requires electrical power.  The
system operates by a combination of  remediation stress applied to the
subsurface.  Each component is  described below:

a)  Air injection below the water table, using positive pressure. b)  Vapor
withdrawal above the water table, within the soil column,     using negative
pressure to remove volatiles. c)  Stimulation of the microbial community to
increase bioremediation     of less volatile compounds.

The system is valved and operated to allow a continual adjustment and
modification of remedial stress to place stress where it is most  needed on the
site.  Series, or lines of wells, called reactor nests,  are placed across the
site and plumbed back to the vapor control  unit, where pumps and control
valves/gauges are located.  If required,  biological treatment is used to
reduce total volatile organic  compounds.  To date the system has been applied
on chlorinated  hydrocarbons and the BTEX components of gasoline and diesel.
The  system can be installed rapidly and with minimum disruption of  business.
Performance is measured by monitoring water quality, soil  samples, stack and
line measurements including flow, organic vapor  meter, carbon dioxide and
temperature.  Microbial populations and  discussed oxygen are monitored to give
an indication of improving  biological remediation as is dissolved oxygen.

(This technology is also listed under Air Sparging - In Situ Ground  Water and
Dual Phase Extraction.)