ARCHIVED REPORTS XR0012610 - Laserfiche WebLink

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This is an application for authority to wonstruct and permission to operate,a Remox/Hirt RXL 1100 thermal oxidizer for the remediation of hydrocarbon contamination at the { former Regal Station #603 at 6425 Pacific Avenue (corner Douglas Road) in Stockton, California. The site has both soil and groundwater contamination. The equipment to be used are (1) a groundwater extraction system, (2) a groundwater stripper system, (3) a soil venting and extraction system and (4) the Hirt thermal oxidizer. The groundwater and the soil are both contaminated with petroleum hydrocarbon including benzene, toluene, ethylbenzene and xylene. In addition the soil vapor has substantial amount of methane gas. This basin is known for its natural gas production, The Remox/Hirt RXL 300 is designed to destroy up to 400 SCFM of hydrocarbon at A an operating temperature of 1400° F.+. This unit is to be installed in accordance with the plan of Western Geo-Engineers, 1386 East Beamer Street, Woodland, California 95693-9603 (916-668-5300), whose report of October-November-December i990 is included in this application in its entirety as Appendix A. The objective of this work is to extract both the groundwater and soil vapor to remove the hydrocarbon contaminants from them. The groundwater will be extracted by the use of a pump. Once the groundwater is extracted, it will be passed through a sediment trap before being introduced into the air stripper. The air used bon h the air stripper will be heated. In the air stripper, almost all of the by groundwater will be removed, The hydrocarbon will thereby be transferred to the air stream. The hydrocart:on in the soil will be extracted by using a vacuum pump. The air stream from the stripper and the vapor from the soil venting system will use a common vacuum pump. This vacuum pump will also be connected to a sediment trap and vapor riser with neglilgibl e quantities of tl and rma ydrocoxidirbon.er The destroy entire air the stream from the system w hydrocarbons. The wells and the two "excavation risers" (one 6", one 4') are all manifolded in parallel so that the pumps can be pulling from all at the same time. All or any combination can be activated by opening or closing valves at the manifold. The vapor recovery system from the stripper is also connected to the manifold. Vacuum is provided by a 10 HP vacuum blower (Tuthill Corp.-M.D., Pneumatics Div, 4012-81-2350 RPM for 400 SCFM @ 5" HG) which goes into the RXL 300. Water is to be skimmed at a rate of approximately 2000 GPD from MW-1 and MW-3 through a sediment trap into a stripper. Vapors from the stripper go through the blower to the RXL 300 thermal oxidizer. Hot vapors from the thermal oxidizer are to be forced through a 3 HP blower (Rotron DR 606) into the stripper to expedite ti-,e release of vapors. The vapor extraction piping will also be connected to well MW-1 and MW-3 where it is e::pectecf that the extraction will help capture any free floating product that skimming does not L 1