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�� WELL GAUGING/PURGING CALCULATIONS <br /> �.LEARWATER DATA SHEET <br /> GROUP Date Job No Location 18i7 sow t-r�5�c ✓� <br /> 229 Tewksbury Ave,Point Richmond,CA 94801 r) .{ AA <br /> Phone (510)307-9943 Fax (510)232-2823 q16 03 G 5+o c k ld�l 6A <br /> Tech(s) Drums on Site OTOA Drums on Site @ TOD <br /> Sod 0 Water 5 Soil O Water 6 <br /> Well No Diameter DTB DTW ST CV PV SPL Notes <br /> (in) (ft) (ft) (ft) (gal)) (gall) (ft) <br /> 1 7 it `-'" � r-L � �� J 7 l7� <br /> /.5' 55 7 q6 <br /> a V,ro 11,03 �'?'q7 a 3 -7r ? <br /> 11 �� <br /> 1, 23 3-7l <br /> a,fo 31 <br /> � � la•�G 3 r� r s� <br /> Explanation, Conversion ac ors cf <br /> DTB = Depth to Bottom 2-inch diameter well cf=0 16 gal/ft <br /> DTW = Depth to Water 4-inch diameter well cf=0 65 gal/ft <br /> ST = Saturated Thickness (DTB-DTW) 6-inch diameter well cf=1 44 gal/ft <br /> CV = Casing Volume (ST x cf) <br /> PV = Purge Volume (standard 3 x CV, well development 10 x CV) <br /> SPL = Thickness of Separate Phase Liquid <br />