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I I. INTRODUCTION On August 25, 2006, a Nitrate Loading/Soil.Suitability Study and a Domestic Wastewater Ik Disposal Study were completed for this proposed project'under a General Plan Map Amendment Applications(PA=0600037 and Rezone Application (PA-0600552). The project is now referred to as tie KSC Travel Center. the interim tiirie.between the completion of the initial Studies and the present;the San-Joaquin-C unty Environmental-Health Department (MID)has stated that the project has changed sufficiently in scope to warrant an update and amendment to the original Studies completed in 2006. This Report presents these investigative results, and-provides EHD with their required and requested information. The findings of this Update and Amendment Report must be used in conjunction with the original Studies completed for this project. I The EHD's.primary concerns with this project are the following: 1.) The number and types of businesses that have changed since the original conceptual plans, and consequently the anticipated wastewater flow volume emanating from the proposed project, 2.) The wastewater treatment methodology as proposed by the engineering firm of Nolte Associates, Inc. and how this methodology correlates with nitrate loading, and 3.) The fact that the wastewaterdisposal areas have now been designated in the southwest corner(SWC) of the subject property as noted on the. Site Plan as "Proposed Wastewater Treatment and Dispersal Area#1 and Area#2." Wastewater disposal areas were originally specified to be in the.northwest corner of the property. The types of businesses and the wastewater disposal areas now being proposed are illustrated on a Concept Site Plan produced by the engineering firm of CSHQA of Sacramento and Boise,Idaho. The KSC Travel Center commercial complex was originally to consist'of a Gas Station/ Convenience Store,.' three Fast Food Restaurants, two Motels (one with a restaurant), and two Retail Strip Centers, to be constructed in two separate.Phases. Presently,the KSC Travel Center f Complex is now to consist of a restaurant on the east side of Manthey Road, an auto gas station, a ' convenience store (c-store)with-a quickµserve restaurant (QSR), an 80-bed hotel, and a truck refueling'and services facility. Nolte Associates,.Inc. has been retained by Mrs.-Kelley to formulate preliminary wastewater treatment and disposal criteria. It was requested by Mr.. Dave Richards, P.E. of Nolte, to provide information in this Amendment for a wastewater management strategy that includes recirculating sand filtration and drip dispersal. This was.primarily accomplished by the referenced soil testing in Z the new Dispersal Areas, and by obtaining influent analytical and flow volume data from the Flag City commercial complex. Flag City is located at the intersection of Highway 12 and Interstate 5 in Lodi, and can be considered a comparable facility'in.comparison to the KSC Travel Center in terms of effluent characteristics, although Flag City is much larger. A summary of the findings pertaining to the nitrate loading potential reveal soils under the proposed fine-grained material composed of sandy silts, silty fine-to-very- Dispersal Areas #1 and#2 contain fine sands. There is.an observable difference in permeability between Dispersal Area#1 and Dispersal Area.#2, with Area#2 soils more dense and compact and therefore, slower permeability. These comparisons are discussed in Section 2 and Section 7 of this report. ��Pag -1- Chesney Consulting