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Earth Systems Consultants Northern California 4529 Quail Lakes Drive Stockton, CA 95207 36 (209) 952-6122 FAX (209) 957-4887 File No. CO-9024-S01 September 25, 1991 Mr. Foster Fluetsh 2575 Grand Canal Boulevard Suite 100 Stockton, California 95207 Subject: 4844 East Morada Lane Stockton, California File Ref. MS-91-10 SOIL SUITABILITY STUDY Dear Mr. Fluetsh: We are pleased to report the results of our soil suitability study for the subject property. We understand that our soil suitability study was conducted to support a proposed lot split of the subject property. A site plan showing existing improvements and the proposed lot split into Parcels 1 and 2 is shown in Figure 1, included in Appendix A. Figure 1 was reproduced from the Tentative Map (dated June, 1990) as prepared and provided by Dillon Engineering. It can be seen in Figure 1 that Parcel 1 contains the existing single family residence with an existing septic system as depicted in the figure. We understand from Dillon Engineering that the proposed leach field area for the septic system for Parcel 2 is in the southwest corner area of Parcel 2. Parcel 2 is currently undeveloped land. Existing Septic Tank Usage LL Environmental Health Division (EHD) records of permits associated with septic systems were examined to assist in defining present and past use of the site. Two permits were found relevant to the existing system on Parcel 1. Permit No. 76-89 issued in 1976 indicates that the septic tank and leach field were installed east of the existing house. The leach field consisted of four seepage pits 25 feet in depth and 33 inches in diameter with four leach lines each of 100 feet length. Permit No. 85-226 was issued in 1985 and indicates that two seepage pits 25 feet in depth and 48 inches in diameter with two leach lines each of 85 feet length were installed north of the existing house. It is our understanding that the leach field installed in 1985 replaced the original system installed in 1976 and that the new leach field system has performed satisfactorily.