Analysis of Soil-Sampling Data Provided by Haley & Aldrich for W. R. Grace.

Assumed Percentage for Trace Detections       0.25%
Depth of Soil                                    4ft
Bulk Density of Soil                           100lb/cf

Note: The Phase-Contrast Light Microscopy methodology used in the
      analysis of the samples lacks precision for concentrations
      below 1%, so the term "trace" had been used to represent
      concentrations below 1%, and the value of 0.25% has been
      assigned to trace values.

                       Zone 1    Zone 2   Zone 3    Zone 4  Zone 5    Totals
		   
Numb Samples               88       109       19       362      23       601
Area (sf)              160000     80000    30000    310000   50000    630000
Numb of Tr.                 9         0        0         4       0        13
Numb > 1%                  13         6        0        17       0        36
Avg Conc. (%)        0.605114  0.110092        0  0.168508       0  0.250576
Vol of Soil (cf)       640000    320000   120000   1240000  200000   2520000
Mass Asbestos (lb)     387272     35229        0    208950       0    631452

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Sampling locations and detected asbestos using data from only W. R. Grace's
Consultant, Haley & Aldrich.  Locations with asbestos detected by City and
Neighborhood consultants, using the same methods, were not included.

                       Zone 1             Zone 2            Zone 4	   
		  location  %        location  %      location   %
                  -------- --        --------- -      --------  -- 
                  AB-1/1    2        AB2-194/2 1      AB-2/1     3
                  AB-1/2   tr        AB2-203/2 4      AB-3/1     7
                  AB-5/1   tr        AB2-207/2 2      AB-3/2    10
                  AB-5/2    2        AB2-211/2 2      AB2-57/2   1
                  AB-6/1    5        AB2-227/2 2      AB2-99/2   2
                  AB-6/2   tr        AB2-238/2 1      AB2-106/2  3
                  AB-7/1   tr                         AB2-123/1  2
                  AB-7/2    5                         AB2-127/1  2
                  AB-8/1   12                         AB2-135/2  4
                  AB-8/2    8                         AB2-136/2  7
                  AB-11/1  tr                         AB2-164/2  2
                  AB-11/2  tr                         AB2-254/1 tr
                  AB-14/1   5                         AB2-255/1  2
                  AB-14/2   3                         AB2-255/2 tr
                  AB2-14/2 tr                         AB2-256/1 tr
                  AB2-31/2  3                         AB2-260/1 tr
                  AB2-32/2  2                         AB2-267/1  5
                  AB2-33/2  2                         AB2-279/2  1
                  AB2-34/2 tr                         AB2-283/2  3
                  AB2-39/2 tr                         AB2-286/2  5
                  AB2-50/1  1                         AB2-297/1  1
                  AB2-355/  1