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+ w The RV Park has opted to cease discharge of treated wastewater to Lone Tree Creek. A subsurface dispersal system is proposed to dispose of wastewater treated at the RV Park. Once the subsurface system is constructed,treated wastewater will no longer be discharged to Lone Tree Creek. In addition,the RV Park is planning to add 198 recreational vehicle spaces. Wastewater generated at the additional recreational vehicle spaces will be conveyed to the existing treatment facilities by an expansion of the RV Park wastewater collection system. The existing treatment facilities will not be changed. The tertiary plant currently in use at the RV Park was designed to produce an effluent of sufficient quality for discharge to surface water,which is higher than required to discharge to the subsurface drip system. The tertiary plant will initially continue to treat wastewater generated at the RV Park;however,the WWTP may be reconfigured in the future to conserve energy. The reconfigured WWTP will use the existing tankage in the WWTP,but will not utilize the filtration and disinfection systems. This is discussed in more detail in the Wastewater Treatment section. Form 200 Form 200 is presented in Appendix A. VOLUME OF WASTE DISCHARGE The WWTP currently treats wastewater from 196 recreational vehicle spaces, a caretaker residence, laundromat, and restaurant/clubhouse. A proposed expansion of the RV Park of an additional 198 spaces is currently being designed. Based on wastewater generation rates presented in Table 1,the average wastewater flow at the RV Park is estimated to be 44,800 gpd. Influent wastewater flow data is measured daily at the treatment plant. As seen in Table 2, influent wastewater flows measured during 2007 ranged from 0 to 16,060 gpd, with an average flow of 7,660 gpd. As seen in Table 2,the average wastewater flow for current facilities is estimated to be 25,000 gpd. This discrepancy is likely due to partial occupancy of the RV Park during the winter months as well as the conservative nature of wastewater generation rates used for planning purposes. WASTEWATER COLLECTION SYSTEM Wastewater generated at the RV Park is conveyed by gravity to the WWTP. Flows measured at the WWTP in 2007 were relatively consistent during the first half of the year, and decreased after peaking in July. The flow data suggests that there is not significant inflow and infiltration (I&I) into the existing RV Park collection system. Wastewater generated from the proposed RV Park expansion will be conveyed to the WWTP through approximately 8,000 feet of PVC pipe. French Camp—Report of Waste Discharge 2 SA3027102 July 2008 n:lsah0271021documentslrwdlfrenchcamprwdjuly rev final.doc