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                                       Special Update: Q & A continued



              COURTESY TENCATE















              Although permits have not been applied for the Tarpon River  4) Where is dredged material being removed to
              dredging project, it is likely the same methodology could be  during the process?
              approved for this location. Smell from the dredging
                                                                    The dredged material will be hauled away to a landfill
              operation will depend upon the type of material being  and disposed of according to the regulatory standards.
              removed. Normally, putrefying smell from decayed organic
              matter present in the waterbody would cause some odor. It  5) If dredged material is to be stored in public
              is unknown what type of smell if any, will come from Tarpon
                                                                    space how will the area be secured to minimize
              River but George English Lake dredging could provide  spread and other impacts to the area?
              potential clues. Odor control measures will be deployed at
                                                                    The goal is not to store dredged material in open public
              both sites but their full effectiveness is not guaranteed.
                                                                    space, especially around the residences. If George English
                                                                    Lake methodology is approved, storage would be in
              2) What pre/post acts will need to be taken with
                                                                    geotubes that will be hauled away once filled. It should be
              regards to abutting and nearby property including
                                                                    noted that it takes a few hours for dewatering of liquid
              boats, docks, and surfaces with potential residue
                                                                    from the solid-liquid mixture inside the tube to separate
              resulting from dredging?
                                                                    (remove). All protections will be according to the permits
              Although the contractor will be required to document pre-
                                                                    issued by the regulatory agencies. Please see response to
              dredging conditions and take necessary precautions, there  Question 1
              should not be any impact to the abutting properties,
              including docks, unless the docks are in poor conditions  6) If dredged material is stored in public space
              prior to the commencement of the project. The contractor
                                                                    what can residents expect to experience during
              may be able to dredge without removing the boats but it  that time and how long will the dredged material
              would not be known until the methodology and equipment
                                                                    be stored in a public space before total removal
              have been determined. Methods and means are always    from the neighborhood?
              determined by the contractor. Since the dredging
                                                                    Please see response to Questions 5 and 1.
              operation is underwater, there residue settling on the
              surface is not likely to occur.
                                                                    7) How long is the total process from setup to
                                                                    completion?
              3) What is the geographic scope of dredging and
              how deep will you dredge?                             Methodology and equipment will provide the most accurate
                                                                    timeline, to be determined based upon permitting. Actual
              The impacted area is 400 feet long and the plan is to
              extend 200 additional feet on either side of the impacted  dredging should not be more than two months.
              area for a total of 800 feet, provided the regulatory
                                                                    8) Will 100% of permits, including any permits
              agencies approve the limits beyond the impacted areas.
                                                                    relating to disposal of dredged materials, be
              Theoretically, the allowable dredging depth would be one
                                                                    obtained before work commences in
              inch because this is the residual depth of the solids
                                                                    neighborhood?
              discharged from the sewer spill. Practically speaking,
              however, the dredging depth would be between six (6)  Absolutely. Work cannot begin without obtaining all the
              inches to 12 inches.                                  permits with correct disposal methodology.

          24                                     rio vista civic association • www.riovistaonline.com
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