19 1 10 ASTM D 5473 - 93 ; ASTM D 5473 - 93 (2000) Standard test method for (analytical procedure for) analyzing the effects of partial penetration of control well and determining the horizontal and vertical hydraulic conductivity in a nonleaky confined aquifier ASTM Primary Author mixed material ASTM 1997 ASTM D 6285 - 99 (Reapproved 2005) Standard guide for locating abandoned wells ASTM Primary Author mixed material ASTM 2006 ASTM D 4750 - 87 (reapproved 1993) ; ASTM D 4750 - 87 (Reapproved 2001) Standard test method for determining subsurface liquid levels in a borehole or monitoring well (observation well) ASTM Primary Author mixed material ASTM 1997 ASTM D 5980 - 96 (reapproved 2004) Standard guide for selection and documentation of existing wells for use in environmental site characterization and monitoring ASTM Primary Author mixed material ASTM 2006 ASTM D 5855 - 95 (reapproved 2000) Standard test method for (Analytical procedure) for determining transmissitivity and storage coefficient of a confined nonleaky or leaky aquifer by constant drawdown method in a flowing well ASTM Primary Author mixed material ASTM 2006 ASTM D 5850 - 95 (reapproved 2000) Standard test method for (analytical procedure) determining transmissivity, storage coefficient, and asnisotropy ratio from a network of partially penetrating wells ASTM Primary Author mixed material ASTM 2006 ASTM D 5787 - 95 (2000) Standard practice for monitoring well protection ASTM Primary Author mixed material ASTM 1997 ASTM D 5786 - 95 (reapproved 2000) Standard practice for (field procedure) for constant drawdown tests in flowing wells for determining hydraulic properties of aquifer system ASTM Primary Author mixed material ASTM 2006 ASTM D 5737 - 95 (reapproved 2000) Standard guide for methods for measuring well discharge ASTM Primary Author mixed material ASTM 1997 ASTM D 5716 - 95 (reapproved 2000) Standard test method for measuring the rate of well discharge by sircular orifice weir ASTM Primary Author mixed material ASTM 1997