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Item No. 1 PC: 11-5-92 SU-91-15 Page 5 i I AREA/NEIGHBORHOOD COMPATIBILITY: Traffic/Circulation: The EIR's traffic analysis indicated that Levels of Service (LOS) for cumulative conditions will fall below the minimum accepted level of "C.' As a Condition of Approval, the developer will be . required to contribute the necessary pro rata share of the costs associated with the following road improvements identified by the Final EIR as being needed to mitigate cumulative impacts,though not to a less than significant level: • Signalize the intersection of State Route 12J88 and Tully Road and add eastbound and westbound right-tum lanes. • Signalize the intersection of State Route 12188 and Jack Tone Road by-pass and add an eastbound through lane. • Signalize the Jack Tone Road and Brandt Road intersection. • Widen State Route 12188 from Victor Road (State Route 12) to the town of Lockeford to a four-lane facility. (This improvement is included in those associated with the County's Traffic Impact Mitigation Fees.) Two Specific Road Plans have been adopted for Sharon Drive by the Board of Supervisors to provide for the collection of local traffic in Lockeford and for the movement of that traffic between Tully Road and Jack Tone Road. Because that movement of traffic is accomplished by an altemate means, staff has prepared a Resolution to repeal the Sharon Drive Specific Road Plan (see Attachment C). The attemate means of access between Tully Road and Jack Tone Road is provided by Sparrow Hawk Drive, through the Tessie Estates subdivision to the east and this 4 subdivision, and the extension of Lambert Way, through the Diamond Bar subdivision. If the s Specific Road Plan is repealed by the Board of Supervisors, Sharon Drive will remain stubbed at its present location in the Lockeford Park Estates subdivision, located northeast of the proposed j subdivision. While the project's traffic-related impacts can be mitigated to a less than significant level, cumulative traffic impacts cannot be fully mitigated to an acceptable Level of Service. In order to take action on the project, Findings of Significant Environmental Impacts and a Statement of Overriding Considerations must be adopted (see Attachments A and B). Water Quality/Quantity: One of the two letters in opposition to the project (see Attachment E) expressed concems regarding the subdivision's impacts on the local water table and the quality of water. The EIR concluded that the proposed subdivision would not have any significant, adverse impacts on either water quality or quantity. The subdivision's lake/detention pond will initially be filled and its water level maintained by use of a shallow well that will draw from a shallow aquifer (approximately 137 feet deep, according to staff from the Lockeford Community Services District) whose water quality is not high enough to be considered potable. The use of the shallow aquifer