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Executive Summary
Pages 1-4

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From page 1...
... Potential disadvantages of ASR wells include low recharge and recovery rates relative to surface storage, which limit capture rates of excess water, and losses due to mixing within brackish or saline aquifers (USAGE, 19991. While slightly brackish water may be acceptable for drinking water, increases in salinity, and other water quality changes resulting Mom inputs of ASR water to surface ecosystems, may have unknown ecological effects.
From page 2...
... Some of the task descriptions suggest that the study will be conducted as a relatively routine engineering exercise rather than a comprehensive and integrated scientific study to "investigate regional technical and regulatory issues governing the feasibility of full-scale ASR implementation...and develop tools to assess tile feasibility and increase the level of certainty of successful ASR implementation," which is the stated objective of the study. This structure is of some concern given that results of the regional study may show that ASR at the scale being proposed is not feasible due to hydrogeological, geochemical, ecological, or other reasons.
From page 3...
... In addition to these general recommendations on the overall structure and organization of the PMP, recommendations related to more specific tasks of the Regional Study are as follows: , ~ ~ ~ , ~ · The proposed additional monitoring at the pilot sites is a good step, but probably still does not go far enough in terms of numbers of wells and well nests to characterize both hydraulic and biogeochemical processes. Vertical and horizontal heterogeneity of the aquifer system will make this a difficult task that will require extensive testing.
From page 4...
... However, it appears more likely that negative effects of ASR-recovered water could occur within the Everglades itself. This is where surface waters are low in nutrients and dissolved solids, and where input, either directly or via pathways that include Lake Okeechobee, of recovered ASR water with relatively high ionic strength would represent a major ecological change.


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