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Legend <br />Biofilter Footprint, <br />Sloped to Land Surface <br />Biofilter Footprint, <br />Flat Top <br />Gas In <br />to Biofilter <br />Gas Out <br />of Biofilter <br />■...■ <br />■ ■Flare and Blower <br />Construction <br />Enclosure <br />� <br />Footprint/Fencing <br />Material Staging and <br />O Sensor Ports <br />Mixing Area <br />moo, Path for Material Delivery <br />X" Preexisting <br />and Biofilter Access <br />/ Buried Lines <br />�- <br />I <br />Preexisting <br />Buried Lines <br />ti <br />N 0 25 50 75 100ft <br />0 e <br />Boy Scouts Parking v ¢ v <br />Lasalle Council, <br />vvvvv <br />Boy Scouts of America #165 v o <br />ova <br />4449'i <br />ooa�r <br />. p 9 - <br />4 �744 <br />4 4 <br />� Q <br />Methane <br />Biofilter <br />/ Location <br />Remove Corner r <br />�> Post of Enclosure f <br />■ <br />x, Remove Dead 1 1 <br />Arborvitae Ike., <br />Path for Material ` <br />Delivery/Access I.1 <br />FREDRICKSON PARK METHANE <br />_ ;--------- <br />BIOFILTER OVERVIEW MAP Material Staging <br />Preliminary Draft - Subject to Change 1 and Mixing Area �+ <br />, <br />PROJECT DRAWN BY L <br />PARSONS' FREDRICKSON PARK J. STOCK _ <br />— SOUTH BEND, INDIANA <br />APPROVED BY <br />14291 Park Meadow Drive, Suite 100 _ <br />Chantilly, VA 20151 DATE <br />FEBRUARY 15, 2024 <br />1 <br />Biofilter Dimensions and Notes <br />35 ft <br />k_4 7 ft 25 ft 3 ft <br />Lr) O <br />N 1 <br />A-----------------Biofilter Cross Section----------------- A, <br />Gas Out Return Piping <br />to Land Surface <br />Sloped <br />---- - Biofilter <br />Gas Flow ,; Medium <br />Ln <br />Through <br />ni <br />Medium <br />------------ <br />Clay <br />Soil Gas In Distribution Piping <br />N <br />U <br />3 <br />C <br />m <br />J <br />0 <br />m <br />Q <br />0 <br />M <br />Cross z' I A I <br />Section <br />A -A' <br />Flat <br />Top <br />X <br />Torts <br />Gas -In Subsurface Gas -Out Subsurface <br />Piping from blower Piping from Biofilter to <br />to biofilter blower <br />Methane Biofilter Dimensions <br />and Features <br />• Flat top (white dashed line, 20 X 25 X 2.5ft) <br />• Sloped to land surface (yellow, total footprint <br />of 30 X 28.5 X 2.5 ft) <br />• 3 small flush mount valve boxes visible at <br />surface <br />• One stream of gas from after the blower and <br />before the flare piped below grade to biofilter <br />• Gas exiting biofilter piped back to the blower <br />enclosure <br />• Total gas flow at existing blower will not be <br />significantly influenced <br />• Estimated construction time is 1 to 2 weeks <br />• Blower enclosure fencing may need to be <br />removed during construction but will be <br />restored to pre-existing conditions. <br />