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.800 ✓ 06 November 2006 AGE-NC Project No. 95-0184 Page 2 of 6 Each of these tasks are discussed below in detail. 2.1. PERMITTING AND PRE-FIELD WORK ACTIVITIES Applicable site permits will be obtained from the City of Stockton - Public Works Department (COSPWD)for utility connections and from the San Joaquin Valley Unified Air Pollution Control District (SJVAPCD). In addition, an update to the health and safety plan presently on-file will be prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities (National Institute for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. Environmental Protection Agency, 1985). Prior to mobilization, all underground trenching areas will be clearly marked and a utility clearance obtained through Underground Service Alert. 2.2. INSTALLATION OF INTERIM REMEDIATION SYSTEM PIPING NETWORK A remediation system piping network will be installed underground in a 1-foot wide by a 1'/z-foot deep trench; the proposed trenching location is depicted in Figure 2; a cross sectional view of the trench is depicted in Figure 2. System piping network will consist of two-inch diameter. schedule 40 PVC pipingattached to the well-heads at V W-2A,VW-3X,V VW-5A,V W-5B and existing ground _._._ water extraction well EW-I and routed through a manifold to the proposed soil vapor extraction unit (i.e. catalytic oxidizer). Following piping placement, the trench will be backfilled with imported road-base sand, compacted and resurfaced to grade with asphalt. Additionally AGE proposes installation of 6-foot deep by 15-foot long,chain-link,gated enclosure to secure the soil vapor extraction system.The enclosure will be located in a north section of the site adjacent to the northwest corner of the parking lot. The proposed remediation system fencing enclosure is illustrated in Figure 2. 2.3. PROPOSED INTERIM SOIL REMEDIATION SYSTEM The proposed interim remediation SVE system (Solleco Ecat 250) will consist of a condensati separator, vacuum blower, electrically heated catalytic oxidizer and control components. installed underground piping from wells VW-2A, VW-3feVW-5A, VW-513 and EW-1 wil connected to the inlet of the condensation separator. The condensation separator will be conn to the vacuum blower; the outlet from the vacuum blower will be routed through a heat exch and then a catalytic converter cell.Induced vacuum will be measured utilizing a Magnehelic v gauge attached to the inlet of the blower. SVE air flow will be monitored using a Dwyer Advanced GeoEaviror i