SITE INFORMATION AND CORRESPONDENCE_1998-2000

Home Browse Search

March 1998 nearby storm drain.LPL has filed litiga in connection Page 3 with the permitting of the SDCDs' proposed treatment Figure 2: Phase I IRA system and method of discharge. ALL' ILS , The Phase I IRA Detailed Plan was approved by the CIED o RWQCB and submitted to the Court for approval. This arra other pertinent documents are available for review at the C::1 document depository, as described below. Phase I IRA construction activities will involve use of a drill 6lncoin center rig, backhoe;paving equipment, and other construction equipment to install the extraction and monitoring wells, r conveyance pipeline, and to build the treatment system at lr' Lincoln Center. PHASE 11 . , ACTIVITIES The Phase II IRA will be designed to remove contamination in soil and groundwater in the source areas. Presently, LFR is preparing a work plan to conduct additional field scoping activities to design the Phase II IRA.At this time,it is likely that the Phase II IRA will include installation of soil-vapor extraction wells and a treatment system in areas identified during the Source Area Investigation where unsaturated soils require remediation, and possibly the extraction and Q ,a treatment of shallow groundwater in the source area. A proposed Phase II IRA Work Plan will be prepared that will describe pilot testing and other field scoping activities to be • �,• waymn performed in preparation of the Phase II IRA Detailed Plan. n • • • • - • • • A public meeting will be held on Tuesday,March 31, 1998, activities. The Site Project Manager and representatives of at 6:30 p.m. at Zion Lutheran Church Social Hall, 808 the SDCDs, LPL, and the RWQCB will be present at the Porter Avenue in Stockton to provide information to the meeting to discuss these topics and receive questions from public about the proposed Phase I IRA and ongoing RDFS the public. GLOSSARY aquifer A water-bearing soil layer, such as sand, under the plume The area of groundwater that has been affected by surface of the earth; typically designated A, B, C, etc., the hazardous substances PCE, TCE, and 1,2-DCE from top to bottom Regional Water Quality Control Board, Central Valley aquitard A soil layer, such as clay, between two aquifers Region(RWQCB) The principal governmental agency that restricts movement of water from one aquifer to responsible for overseeing implementation of the RDFS another Work Plan at Lincoln Center cone penetration testing (CPT) Pushing an instrumented Remedial Investigation/Feasibility Study (RDFS) conical probe into soil to obtain subsurface lithologic data Technical studies performed to 1) characterize the nature dry cleaning contamination PCE and its associated and extent of soil and groundwater contamination and 2) breakdown products TCE and 1,2-DCE that are present in consider,develop,and analyze remedial alternatives to clean soil and groundwater beneath Lincoln Center up soil and groundwater contamination extraction well A groundwater well that is designed and Site Project Manager The environmental consultant who used to remove groundwater for cleanup or treatment represents the SDCDs and is responsible for the preparation purposes and implementation of the RDFS Work Plan; the Site groundwater Water present in saturated soil beneath the Project Manager is Donald T. Bradshaw, R.G., of LFR surface of the ground soil-vapor survey A study performed to collect and analyze samples of the vapor that is present in soil located Interim Remedial Action (IRA) Cleanup activities that between the ground surface and groundwater to determine may be taken during implementation of the RI/FS Work the presence of chemicals Plan to protect public health and the environment while long-term cleanup solutions are being developed source The location of a release of a chemical to soil and/or groundwater