ARCHIVED REPORTS_2019 SOIL MGMT PLAN (JULY-REVISED)

Home Browse Search

Brusca File No. 137-002 Page 4 May 23, 2018 Murphy Parkway Property Waste Materials Reuse Workplan Starting in 2014, a substantial amount of investigation, waste characterization, and waste removal work was implemented on the subject parcel by AGE with direction and oversight by the SJCEHD. This work included: • a significant number of explorations (test pits and borings) within the capped area and other site areas, including areas to the south and east of the capped area. • a geophysical survey (involving ground penetrating radar and a magnetometer survey) on the westerly portion of the property to identify any unknown areas of disturbed materials/buried wastes. The geophysical and trenching work reportedly identified two areas (approximate 2,000 square feet each in plan area) of deeper disturbed materials/wastes along the far westerly margin of the property and outside of the cap area. These areas were identified as the South Waste Cell (SWC) and the North Waste Cell (NWC). SWC and NWC waste materials subsequently were excavated and removed from the subject parcel to below screening levels and were hauled from the property for offsite landfill disposal; waste associated with these cells apparently remains on the adjoining westerly property. • collection of samples of soil and waste materials from WU1, SWC, and NWC areas, as well as from other site areas for analytical laboratory testing. AGE’s investigative, remedial, and characterization work associated with solid wastes on the subject parcel was summarized in a Site Assessment Summary Report dated December 21, 2017; the Site Assessment Summary Report is currently a draft document that is undergoing revisions to address regulatory agency requirements.9 3.0 PLANNED SITE DEVELOPMENT/CONSTRUCTION Redevelopment of the subject property is planned to be initiated in the very near future. The planned development includes construction of an approximate 870,000 square-foot commercial/light-industrial structure intended for use for warehouse/distribution purposes. The layout of the planned development is shown on Plates 2 and 3. The planned structure will be of tilt-up concrete construction with a concrete slab-on-grade floor. Onsite areas exterior to the building will support asphaltic-concrete and concrete pavements, storm water basins, and very limited landscaping. The planned building will be connected to the local sanitary sewer system. Per discussions with the involved regulatory agencies, a land use covenant (LUC) will be established for the subject parcel that prohibits residential and day care usage of the subject property. The LUC also will prohibit the use of groundwater beneath the property for drinking water purposes, and will establish provisions for future management of reused wastes and maintenance of the building floor slab and pavements that cover such wastes in the unlikely event that the wastes are disturbed in the future. 9 AGE; “Revised Site Assessment Summary Report, 17100 Murphy Parkway, Lathrop, San Joaquin County, California, Solid Waste Information System (SWIS) Number 39-CR-022 (APN 198-120-09); January 10, 2018.