Laserfiche WebLink
w$k,,, .eeW h*IW3 P.a r.sa.n....a rn.t.x.n.eriw.Wn <br /> ra j r ry rkw wni x�cas 6.57 weer e­v savor fedi[Yirwnu <br /> Dyes <br /> m water as n passes upward through the fluidized mass rhe biomass is a consottium of <br /> naturally oecrmrng bacteria found m many locwtom In Califoima ERl biw cacton destroy the <br /> wntaminants rather than sunply izansfcnmg them to a diffetent medium and they do not <br /> t,enerate air cmisiamis or noise <br /> I he bel is fluidized by a conslant 50 Spm recirculatran of water that dilutes incoming <br /> groundwates from the site After passing through the fluidized bed the re-cnevlated water passes <br /> duough a te-oxygenation lowq The oxygen from as is augmented with an oxygen boostet to <br /> increase the capacity of the blrteactet Solids such as calcium carbtenne particles that maybe <br /> formed as a result of oxygenation are removed by a bead filler Nutrients—pa:ticulatly mtrngen <br /> Phosphorus,and potassium—are metered to the broteactoi in a solution to enhance the bio <br /> activity Two I WO pound ganulm activated caibon(GAC)units will be placed in series <br /> downstream of the bmreacier in the event of any breakthrough of contaminants from the <br /> brereaclor Sample polis will be located before between and after the absotp[wn vessels to <br /> monnnt for breakiluough <br /> The ERI 4000 bioreactor is designed to veal a contaminant mass loading of up to 250 000 gpm <br /> ppb(for maniple 25 Spm with 10 ped ppb or 2 5 gpm with 100 000 ppb) As far as hydraulic <br /> loadings ere concerned the birrcactoi can handle groundwater Row rates of up to 35 gpm so it is <br /> we11 suited for the purposed groundwater extraction late of 25 gpm Generally contaminant <br /> concentr4lions decrease substantially in the fust sevcial weeks of Sioundwaim exn action <br /> During the initial startup phase groundwater flow tater to the bmreactoi will hkoly be less than <br /> 25 Bpm and will be giadually mcr cased as the contaminant concentrations dew case as to not <br /> overload the bioicaclot <br /> The water will be treated on site and discharged into the Coldani irrigation ditch via an existing <br /> brined 2 inch PVC pipe from the previously operated treatment system south of the subject site <br /> (Advanced Geolimmunmental Inc 1•igure 5 Treated Water Discbal ge Pipe System) rhe water <br /> Will be permitted under Cahfotma Regional Water Quality Control Board(CRW QCB)General <br /> Order 5 00-I 19 for discharge to surface watms All monitoring will be done in mcordutec with <br /> CRWQCB General bidet 5 00 119 <br /> All construction acuvrvcs including unbty tie-in trenching and paving.will be pctindted by <br /> appropriate authorities and done in a workmanlike manna <br /> PERMITTING <br /> All construction activities including utility tie-in trenching and paving will be peimmed by <br /> appirpirate authorities and conducted in a workmanlike manner Prior to dtillmg,pctuuts will be <br /> ohtamed from the STCEH and an enceoaebmeM permit will be mquued from puhhc works prior <br /> to the installation of the,wells Underground Service Aleft will be contacted at a minimum of 48- <br /> hovis pnot to drrihrrg acli :tics for identifscanan of buried utilities at or entering the project site <br /> from the public right of way <br />