RES 221299 - Laserfiche WebLink

4IELai,a2=25k ,i .1 rs 03l79f S GROWN AND cnLowru CCNSL LTIflG ENGr EEPS e July 8, 1986 H::. Martin W. Ir,de.rbitz en Gale, Seihel, 1nderbiteen 62 West heel Street Pleasanton, California 9,leee 11-12-2646-01/1 Subject: Methane Gas Control At the Pleasanton Garbage Service Landfill i Dear Mr. Inderbitzen: of The gas migration control system proposed in cur May G, 1986 letter consists of one extraction well located in the vicinity of borehole t -4 neer the property line. The gas extraction well Sc coeuected to the vacuum pump via a header pipe. The ••_ceem nwnp discharges to either a flare or the atmosphere. The need for a flare will be determiner by the regulatory agencies. ie It is assumed the blower will be in an enclosed building i adjacent to the flare (if required) and that these acilitice are located in a flat and ansily eecceeihle y portion of the site. existing monitoring probe e ,ill. he 4r- used to determine the radius of influence of the one lee extraction well. If methane conccutretitns do not drop in the minitoring rrobee, a second extraction wet` may have to be added on the Martin property to further reduce methane ill gae concenteat.iona. The second extraction well will be tieel into the existing header pipe end -areae + eemp. Specific dentgn requirements (for example, flare, type and size of blower and pipe, etcetera) are determined during the conenotual design ?haze, The design can be completed in approximately C weeks after authorization to proceed. Construction .r:3 aystar+ startup should take approximately 8 to 10 weeks After selection of a contractor. e. The one well system proposed is intended to control further offsite gee migration and to potentially eliminate problems a with gas that has already migrated offsite. The ayotem ie not intended to provide all the necessary protection for any future development on the landfill itself. a 3.. r a. n EXHIB i 8 il-Vman.,.. vs aKYMlX bnz CIA•4012S. w 4.1 4 tir4 A