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EXHIBIT 1 <br />INDIAN RIVER COUNTY <br />PUBLIC WORKS DEPARTMENT <br />STORMWATER DIVISION <br />180127 1h Street <br />VERO BEACH, FLORIDA 32960 <br />Phone: (772) 226-1562 <br />kmccu11y a,ircgov.com <br />INTEROFFICE MEMORANDUM <br />TO: Richard Szpyrka, P.E., Public Works Director DATE: January 25, 2018 <br />Vincent Burke, P.E., Utility Director <br />FROM: Keith McCully, P.E., Stormwater Engineer <br />Eric Charest, Environmental Compliance Specialist <br />SUBJECT: RESULTS OF THE PHASE 1 WATER QUALITY STUDY OF <br />THE IRFWCD 8TH STREET CANAL BETWEEN 90TH AVENUE <br />AND 74TH AVENUE <br />Discussion: <br />In discussions with Indian River Farms Water Control District (IRFWCD) Superintendent <br />David Gunter, Commissioner Zorc identified four areas within the IRFWCD's canal <br />system that appear to be "hot spots" regarding external nutrient loading, meaning the <br />four areas require high maintenance to control excessive aquatic plant growth. The four <br />problem areas are: <br />• Area #1: The C-1 Canal along 8th Street between 90th Avenue and 74th Avenue; <br />• Area #2: The A-3 Canal along 26th Street between 74th Avenue and 66th Avenue; <br />• Area #3: The J-5 Canal along 21St Street SW east of 20th Avenue together with the <br />Lateral J Canal from the J-5 Canal north to 5th Street SW; and <br />• Area #4: The Lateral G Canal from 81St Street to the North Relief Canal. <br />On August 16, 2016 the County Commission instructed Public Works Stormwater <br />Division to study the Indian River Farms Water Control District (IRFWCD) 8th Street <br />Canal between 90th Avenue and 74th Avenue (Area #1). IRFWCD suggests this canal <br />section experiences high nutrient loadings compared to other nearby canals, requiring <br />frequent maintenance activities to remove excessive aquatic plant growth. The primary <br />goal of the study is to determine if suspected seepage from the County's West Regional <br />Wastewater Treatment Facility's wetland system/deep settling pond or nearby artesian <br />wells may be entering the canal and adding nutrients, contributing to excessive aquatic <br />plant growth. For the original study, six sample points were determined and the <br />locations appear in Figure 1. Beginning September 13, 2016, field sampling personnel <br />from PACE Analytical Services, Inc. (PACE) collected canal water samples at each <br />1 <br />FAPublic Works\KeithM\Stormwater Projects\IRFWCD 8th Street Canal Water Study\Memo 2 - 8th Street Canal.doc 32 <br />