Laserfiche WebLink
MZSMA <br /> Working To Restore Nature <br /> RESULTS OF THE INVESTIGATION <br /> Soil Lithology <br /> The soil hthology is generally consistent across the property but soil horizon thickness changes <br /> ' from well to well From the surface to between 10 and 18 feet the soils are lean to fat clay <br /> From between 10 and 18 to approximately 38 feet are well to poorly graded sands with variable <br /> tamounts of clay and silt. In well MM gravels were present in the lithologic sample collected <br /> at approximately 34 feet below grade Well logs are presented in Appendix I <br /> Groundwater Gradient <br /> ' Groundwater levels in the wells on the Madison Street property (MW1, MW2, MW4, MW5, <br /> and MW8) ranged from 27.33 to 27 69 feet below grade At the Van Buren Street property the <br /> ' groundwater levels ranged from 26 30 to 27 26 feet below grade in the site wells MW3, MW6, <br /> MW7, and MW9 Groundwater levels in wells MW 1 through MW7 rose an average of 0 18 <br /> feet since last measured in May 1994 The groundwater gradient calculated with the data <br /> collected June 3, 1994, was generally consistent with previous gradient direction and magnitude <br /> ' The gradient at the Madison Street property was to the north at approximately 0 004 ft/ft The <br /> ' gradient at the Van Buren Street property was to the northeast at approximately 0 002 ft/ft <br /> Monitoring and survey data are summarized in Table 3 and groundwater monitoring/survey data <br /> and well development/purge logs are included in Appendix II <br /> ' Analytical Results - Soil <br /> The soil samples collected from borings SB3, SB4 and SB5 and wells MW8 and MW9 were <br /> ' analyzed for BTEX and TPHg In addition the MW8 samples were analyzed for TPHd and <br /> halogenated volatile organics (HVOs) Petroleum hydrocarbon analytes were not present at or <br /> ' above method detection limits in the samples collected from MW8 (MW8-20' and MW8-25 5') <br /> In the 25 5 foot sample collected from MW9 xylenes were present at 0 013 parts per million <br /> ' (ppm) In the 27.5 foot sample collected from MW9 benzene (0 018 ppm), toluene (0 69 ppm), <br /> i5oo7GUMPORMSR-OW FNL 10 <br /> 1 <br />