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JUL-02-99 15:24 Frum:URS GREINER SF 4153981904 T-934 P 01 Jab-959 <br /> URS Greiner Woodward Clyde <br /> DATE: 7/2/99 100 California Street. Suite 500 <br /> San Francisco, California 94111 <br /> PAGE 1 OF: 5 TEL: (416) 774-2700 • FAX: (415)398-1804 <br /> TO: Jeff Wong FROM: Avram Frankel <br /> FIRM: SJCEHD SUBJECT: In-Situ Options <br /> FAX NO: 209.468.3433 CC: <br /> MEMO: <br /> Here is an article on Fenton's. We have used it with limited success on TPH aitea. It should work on TPH <br /> and DNAPLs and Fenton's can cleave the required chemical bonds. Potassium Permangate is also being <br /> used on sites but it only cleaves the alkene bond in DNAPLs. The key is running a pilot test and getting a rig <br /> that can pressure inject the reagant to depth. This is not trivial. We have access to such rigs out of our <br /> Denver operation and they have a lot of experience with in situ remediation. Generally, chemical reagants <br /> work better in soils that ORC or HRC reagants that require bugs and a lot of time. Let me know if we can <br /> assist you or the RP in any way. <br /> Regards, RpsliqAvram. <br /> JUL 02 1999 <br /> ENVIRONMENTAL HEALTH <br /> PERMIT/SERVICES <br />