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Ben Hall <br /> -2- 14 December 2006 � <br /> Musco Family Olive Company <br /> (http://www.rirdc.gov.au/reports/Ras/02-154.pd publication. Section 3.5.3 (page 22) of that <br /> publication includes the following: <br /> "However, where the salt taken up from the groundwater by the plant and exuded <br /> through the leaves is eventually deposited remains to be studied. It appears likely <br /> that the salt that blows away and falls again down wind, is washed away or enters the <br /> soil in the next rain, depending upon soil texture and intensity of the rain...The net <br /> effect over time is to increase the rate at which salts in the rising water table are <br /> released to wash away in early rains." <br /> We are not confident that the in-field efficiency of harvesting would be as high as what might <br /> be predicted by laboratory testing. In addition, while the NyPa publication seems to focus on <br /> increasing soil porosity and remediating shallow saline groundwaters, it does not discuss <br /> sodium anti cTilo id'e uptake ra es o s nnkfer irrigation:—The.Compliance Plan also referenced <br /> initial testing (page 2,-paragraph A.1) indicating that NyPa is capable of achieving a net <br /> removal of sodium and chloride from the Musco site soils. By 31 January 2007, please submit <br /> (a) the referenced initial testing and (b) mass balances on sodium, chloride, and total and fixed <br /> dissolved solids, including descriptions of assumptions regarding applied wastewater rates, <br /> runoff, infiltration, and NyPa Forage uptake and a discussion of the anticipated effect(s) of <br /> precipitation and sprinkler irrigation on retention of salts in the NyPa Forage foliage. <br /> The Compliance Plan submittal was accompanied by the Pilot Study Results Summary Report <br /> (Pilot Study Report), The Pilot Study Report discussed the treatability of selected olive <br /> processing waste streams using biological.treatment in a membrane bioreactor (MBR) with <br /> 0.04-micron ultra-filtration membranes and dissolved solids removal by reverse osmosis (RO). <br /> The pilot plant was sized for a treated discharge of 5 gallons per minute (7,200 gallons per <br /> day). <br /> The Executive Summary to the Pilot Study Report stated that "[tlhe treatment concept that the <br /> pilot study was conducted to evaluate involves segregating the wastewater streams with the <br /> highest inorganic strength and treating these streams using reverse osmosis (RO) to separate <br /> the dissolved inorganic constituents...The permeate from the two-stage RO membrane <br /> -treatment-would be-blended-with-other-screened process-wastewater-in-Musco's 84=million - <br /> gallon (MG) aerated reservoir, with the goal of producing effluent containing very low organic <br /> concentrations and less than approximately 1,200 mg11 of inorganic dissolved solids [fixed <br /> dissolved solids or FDS]." In Section 2.1, the Pilot Study Report explains that "[tlo create <br /> capacity in the existing impoundments to be used for managing the reject, treatment was <br /> designed to include process wastewater streams normally routed to the impoundments for <br /> management.", for a combined FDS of 6,000 mgll. <br /> The Executive Summary to the Pilot Study Report indicated that Musco staff were primarily <br /> responsible for the day-to-day operation of the pilot plant, including conducting monitoring and <br /> recording results. The study commenced in August 2003. Mechanical failures and operational <br /> issues resulted in the loss of the MBR biomass on several occasions, lengthening the study <br /> duration,to two years. The Pilot Study Report found that frequent and continuous fouling of the <br /> RO and ultra-filtration membranes resulted in reductions to the anticipated efficiencies of the <br /> treatment processes. <br />