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HomeMy WebLinkAbout20080880 Ver 1_Mitigation Monitoring Plans_20091124 o8-n880 The Cliffs at High Carolina Northern Brook Trout Monitoring Plan Fairview, North Carolina fitted to NC DWQ and NC WRC November 23, 2009) P.O. BOX 882 CANTON, N.C. 28716 Ufp"--@M0W[Ay '\+0 V 2 4 1009 oENR _ wAtE?t a?A;iTv WETLANDSANDSTORINWM MMCH Introduction This monitoring plan is being proposed in order to satisfy Condition #8 of the North Carolina Division of Water Quality's Approval of 401 Water Quality Certification with Additional Conditions dated August 26, 2009. Condition #8: "The applicant shall develop a plan for monitoring the brook trout populations for all the stream located upstream of the pond (Lake Tsuga) located on the golf course. The plan shall be submitted to the DWQ and the NC Wildlife Resources Commission no more than 90 days after the effective date of this 401 Water Quality Certification. After DWQ approves the plan, it shall be implemented. The plan shall include, but not necessarily be limited to, an annual in stream sampling protocol to determine if the streams are supporting the brook trout populations, a comprehensive instream macroinvertebrate sampling regime, and a proposed remediation plan if the in stream sampling indicates that brook trout populations are no longer present. The report shall be submitted on an annual basis to the Division of Water Quality in conjunction with all other monitoring requirements of this certification. In the event that the streams cease to support the brook trout populations and the proposed remediation plan fails to restore the brook trout populations to the site, the applicant shall undertake all necessary actions, as approved by DWQ and in consultation with WRC, to restore the brook trout populations." This plan, as required, includes a sampling protocol for northern brook trout and macroinvertebrates as well as a remediation plan, if necessary, even though it is not anticipated to be required. Methods Trout A backpack electro-fishing shocker will be used to sample for the presence of brook trout in the northern and southern tributaries to Lake Tsuga each year in May. A three pass depletion method will be used to quantify brook trout populations in three 100-meter reaches in each tributary. Sample reaches will be hand measured with a 300-meter hand tape. Station number, date, time, water temperature, conductivity, and dissolved oxygen will be measured at each of the eight sample locations. An YSI meter will be used for collecting the data at each sample location. The trout data collected will include range, length, and density. The six sample locations will be marked in the field to identify these areas for future sampling. A baseline survey will be conducted in 2010 before construction of the golf course begins. A trout spawning survey will be conducted each year between October and December to determine if the trout population is continuing to reproduce. A baseline survey will be conducted in 2009. Field data documentation will include photographs of the trout presence survey and spawning survey. 2 Benthic Macroinvertebrates Benthic macroi nve rteb rates will be collected using the NC Division of Water Quality's abbreviated standard qualitative sampling procedure since the streams to be sampling are less than four meters in width. This survey will also be conducted each year in May during the trout survey. Macroinvertebrates will be surveyed at each of the six trout sampling sites. The abbreviated Qual 4 method will be used. Four composites will be collected including one kick sample, one bank sweep sample, one leaf pack sample, and visual collections. All organisms will be collected and processed. The relative abundance of each taxon will be determined and classified as rare (1-2 specimens), common (3-9 specimens), or abundant (>_ 10 specimens). The EPT (Ephemeroptera, Plecoptera, and Trichoptera) taxa richness will be used to assign water quality ratings for the eight sampling locations. These streams will be considered not impaired if a bioclassification of good-fair or better is received using DWQ criteria for larger streams. Habitat evaluations will be determined using the Biological Assessment Unit's Habitat Assessment Field Data Sheet for mountain / piedmont streams. This assessment method will assign a numerical score from 0-100 for each of the six 100 meter reaches of streams sampled based on channel modification, instream habitat, bottom substrate, pool variety, riffle habitats, bank stability and vegetation, light penetration, and riparian vegetative zone width. A baseline survey will be conducted in 2010 before construction of the golf course begins. Remedial Action Plan If the brook trout sampling determines that northern brook trout are no longer present in the northern and southern tributaries to Lake Tsuga, the Cliffs commits to taking corrective actions to restore the northern brook trout population. Previous property owners have stocked Lake Tsuga with northern brook trout. Even though it is not anticipated to be necessary, the same method will be used to re-establish northern brook trout if the current population ceases to exist. Reporting A yearly trout monitoring plan report will be submitted to DWQ no later than by January 5th of the following year. Therefore, the first monitoring report will be due January 5, 2011 which will serve as the baseline report. Cessation of Northern Trout Monitoring The northern brook trout yearly monitoring and reporting will continue for two years following the completed construction of the golf course. 3