ARCHIVED REPORTS XR0001002 - Laserfiche WebLink

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Refer to PLATES 1. & 11 and prior reports for details- REGIONAL GEOLOGIC & GEOMORPHIC PROVINCE. Refer to PLATE III and prior reports SOILS CLASSIFICATION: Refer to PLATE IV for a copy of the soils profile map. Additional details were given in earlier reports. DEPTH TO GROUNDWATER: During excavation work conducted in May, 1993, groundwater was encountered at about 35' bgl. Groundwater was observed entering the excavation during the work performed in December, 1994 It was measured at 37' bgl, but conditions had not stablilized, and the static level would probably be somewhat higher. This depth agrees closely with levels measured in other wells in the area. LOCATION OF NEARBY WELLS: It was mentioned in the workplan submitted in November that there are at least 19 groundwater monitoring wells in the area, some of which are shown on PLATE V. The owners of the site immediately to the east at 1045 W. Charter Way, (Nomellini Construction Co_ , ) have recently placed at least two (2) additional groundwater monitoring wells in order to further define an extensive hydro- carbon plume beneath the site. One of those wells has been placed on the east side of the Miles & Nolet property; it' s exact location is not yet available, but we will be provided the data developed from that well when it is completed. That data will be incorporated in subsequent reports prepared for this property_ BRIEF REVIEW OF PRIOR WORK DONE ON SITE: September, 1992 - Septic tank serving shop building taken out of service. November, 1992 - Septic tank & leach lines uncovered Found to Contain waste oil & petroleum products. May, 1993 - Septic tank emptied & leach field removed_ Wooden septic tank also removed. Excavation left open Au st 1993 - Five (5) auger borings placed in area of leach field to depths ranging from 32' bgl to 42' bgl; the presence of petroleum hydrocarbon substances was detected in soil & ground- water Three (3) hand-auger borings were placed in and adjacent 2