V:\CompanySOQs\Arsenic\Indd\02KeyAcheiveArsenic.indd k e y a c h i e v e m e n t s 19 TOWN OF GILBERT, ARIZONA Four wells (total capacity of 8 mgd) were evaluated to determine the most appropriate arsenic mitigation strategy. Mitigation strategies ranged from blending to wellhead treatment. Arsenic specific media was estimated to reach exhaustion in about 1 year. HIGHLIGHTS In 1992, Carollo provided design services to upgrade Well No. 1

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