2-401 Annual Report 2014
Wetland Mitigation and Monitoring RFP
2-401 Annual Report 2014
2/25/2015 3:16:04 PM
2/25/2015 3:12:20 PM
Wetland Mitigation and Monitoring RFQ
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Page 2 <br /> <br /> <br /> <br />We would also like to note that in addition to mitigating the wetland impacts on site to the <br />recommended ratio of 1.83:1, the Town also provided compensation per the Army Corp of <br />Engineers 404 Nationwide Permit in the amount of $6,675 ($150,000 per acre x 0.0445 acres). This <br />amount is earmarked for future mitigation in the Hydrologic Unit Code #16050102, Truckee, <br />California. <br /> <br />Post Construction Maintenance of Wetlands <br /> <br />The contract with the construction contractor included maintenance of the wetlands for 1 year post <br />construction. As part of the maintenance requirements in the construction contract, the site was <br />evaluated in July 2014 to monitor the progress of the wetlands and make improvements as needed. <br />The Town and the contractor met on site on July 3, 2014. Western Botanical Services, Inc. prepared <br />a technical memo for the contractor that summarized their findings of the wetland progress, dated <br />June 20, 2014. In general, the areas that were seeded were not germinating as well as anticipated. <br />Plugs in the wetland ditch were healthy and doing well, but additional plugs were recommended to <br />improve the coverage criteria required for the wetlands. The technical memo is attached to this <br />report. Based on this meeting and the technical memo, work to improve the wetland was performed <br />by the contractor from July to October 14, 2014. Due to the continued work on the wetlands, the <br />Town planned to have a botanist evaluate the area as late as possible in order to ensure the new <br />plugs were established. <br /> <br />Work performed by the contractor between completion of construction in October 2013 through <br />the wetland maintenance period through 2014 included the following: <br /> Seeding and watering the banks of the wetland ditch with additional Revegetation seed mix <br />(July 28, 2014). <br /> Seeding and watering the banks of the wetland basin with additional Revegetation seed mix <br />(July 28, 2014) <br /> Added additional plugs to the wetland ditch July 15, 2014. <br /> Planting the wetland basin with approximately 300 plugs. After planting plugs in the <br />wetland basin September 23, 2014, the basin regularly filled up with water, as the holes <br />allowed the high groundwater in the area to percolate up into the basin. Water was <br />observed in the basin throughout the remaining fall months. Additional plugs were planted <br />October 14, 2014. <br /> Removal of invasive weeds <br /> Increased watering <br /> <br />Since the meeting with the contractor in July, the wetlands have shown improved progress. Plants <br />have germinated on the banks and the plugs that were planted in 2013 and in July 2014 are healthy. <br />It is too soon to determine the health of the plugs planted in September and October in the wetland <br />basin as within 6 weeks of the final planting, the basin has been filled with water. <br /> <br />Annual Report Modification <br />Per our conversation last week with Tobi Tyler, we are requesting a modification to the permit <br />requirement described under Additional Conditions Item 3 for this year. The permit requires <br />monitoring of the success in restoring water quality, floodplain function, and biological resources <br />relative to the wet meadow creation. A professional evaluated the site in June to review progress. <br />Work was performed through the rest of the summer and fall to improve the wetlands per the <br />recommendations. Since the completion of the work, we were not able to evaluate the success a <br />second time as the wetland basin has been full of water due to the wet December this year (photos
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