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i r7C. TURE SEPTIC SYSTEM OPERATIONAL PARAMETERS . .ell'since the exact operation of the grocery store, deli and kitchen has yet to be completely determined, a discussion of wastewater disposal operational parameters cannot be quantified at this time. Consequently, the EHD may require an addendum to this Study that will discuss and detail a new septic w system for the proposed operation of the entire structures on the property. IV. CONCLUSIONS AND RECOMMENDATIONS SSS§ 5.4/The soils underlying a potential leachfield disposal area to serve the Rosetti's Market and possible Deli/Kitchen show acceptable permeability at the typical leachline depth of 42 inches, and exceptional permeability at the deeper depths representative of sumps and seepage pits. NLS§ 4.2, SSGnilcation From the soil chemistry test results, it appears that denitrification potential can be consider medium due to the clay content at the 10 to 15 foot depths where suppression omay occur. The denitrification potential in combination with comparatively shallow-rooted landscape plants in the leachfield area should also reduce nitrate impact by evapotranspiring and mineralizing a percentage of the effluent during favorable weather times of the year (i.e., April through September). The well water analytical chemistry results obtained from the on-site domestic well indicate that the nitrate impact to the underlying aquifers is a surprisingly medium concentration. This is contrary to what would be expected given the immense amount of agricultural production land area surrounding the project site. The well water has shown the presence of Total Coliform bacteria for two separate sampling events. However, after sufficient chlorination, the third sampling event showed Total Coliform absent. It is recommended that the domestic well be sampled and tested at least quarterly for Total and Fecal Coliform bacteria. I Since the project, in its entirety(Deli and Kitchen operations) are unknown and unquantifiable at this time, it will be at the request and requirement of EHD of the following: 1.) Additional testing of the on-site well after chlorination based on two test results for Total Coliform bacteria, 2.) Since any on-site well will in all likelihood become a public well, EHD may request that a new well be drilled to meet all requirements, 3.) The installation of a new septic system to serve the commercial built-out facility separately from the two residential structures, or combine all wastewater from the entire property into one disposal area, 4.) Reporting design parameters and plans for the proposed upgrades to the facility. SS § 6.8. h erage aily Flow is calculated to b 300 gals/da from the public and employee Res ooms an 300 gpd the two residential structures based o e S.J.C. Sewage Standards. The Ap icatio at the soil-effluent interface at 4�2 int epth is 0.472 gallons/ft2/day obtained from the pert rate of 41.7 min/in. 11 Chesney Consulting