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d. pHention Basins Monitorini <br />Monitoring of the l»sins included in this pisi will be conducted to evaluate <br />theii effectiveness at removing phosphorus and suspended solids. An <br />evaluadoo of the rate of in-filling will alai be made. This information will be <br />utilized in developing an operation and maintenance plan for the basins. <br />Two basins will be included in this moniajring. These are: <br />• County Road 6 Basin <br />• Deer Hill Road Basin <br />The inlets to these basin are already being monitored as str»m site S-l and <br />stream site S*3. To allow for comparable results, tfie outlets to these basins <br />will be monitored using the same technioues and schedule used in the stream <br />monitoring. <br />Removal effectiveness of the two basins will be estimated for six storm events <br />(rainfall of 0.10 inches or greater) between March and September 1995. To <br />evaluate the rate at which sediment is accumulating in each basin, a survey of <br />basin depth contours will be made, and compared to as-built contours. This <br />information will be utilized to assist in developing long-term maintenance <br />schedules for the basins. <br />e. Monitoring Costs <br />The estimated costs for conducting the post-implementation monitoring are <br />detailed in Table 7.