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Timing or Monitoring Person/Agency Frequency of Mitigation Measures Requirements Responsible Monitoring TRAFFIC4:Tracy Boulevard(north of Lammers Road)shall be widened,as necessary,from two to four travel lanes to accommodate cumulative,regional traffic volume increases.The County shall Review TIMF status, SJCCDD Annual monitoring initiate discussion and coordinate with the City of Tracy regarding the improvements. This coordination efforts with SJCDWP and assurance that widening project shall be added to the San Joaquin County TIMF once improvement designs and Tracy and annual improvements cost estimates are completed;then development within Mountain House shall pay its fair share of monitoring of levels of completed prior to the improvements through participation in the TIMF by paying TIMF fees at issuance of building service. LOS D being permits. reached. "TRAFFIC-5:One of the following options shall be implemented for New Grant Line Road when constructed east of Byron Road:Option 1:Widen Grant Line Road from four to six lanes,as Review TIMF status, SJCCDD Annual monitoring necessary,to accommodate cumulative,regional traffic volume increases.The County shall initiate County LOS standard, SJCDPW and assurance that discussion and coordinate with the City of Tracy regarding financing the improvements should the coordination efforts with LOS standard City of Tracy adopt the widening project in the future. Development within Mountain House will Tracy and annual changed or then pay its fair share of the improvements through participation in any County financing,such as monitoring of levels of improvements the TIMF,by paying any such fees at issuance of building permits.Option 2:Change the level of service. completed prior to service standard for the segment similar to Mitigation Measure M4.125(c)in the Master Plan EIR. LOS D being This allows the use of LOS D rather than LOS C as the threshold of significance. reached. NOISE NOISE-I:Soundwalls shall be included at the locations shown in Figure 5 to reduce the outdoor noise level to an Ld„of 60 dB unless the planning authorities deem that the maximum wall height is Review specific noise SJCCDD Prior to adoption of to be 7 feet. If this is the case,the residents shall be notified that the outdoor sound level has not control measures and MHCSD first final map for been mitigated to the design goal of an Ld„of 60 dB. Alternatively,an exterior noise level standard standards to be finalized noise control of an Ldn of 65 dB(as permitted in the Master Plan)would allow the recommended noise wall prior to adoption of first measures and along DeAnza Boulevard to be reduced to 7 feet in height and the wall along Mascot Boulevard to final map. Review at time standards,after be 7 feet or less. The final wall heights and locations shall be determined prior to the issuance of of sale notifications to grading and house building permits and after the grading and house location plans have been developed. residents unless County location plans Board of Supervisors developed and before selects Ldn of 65 dB and issuance of building reduced wall heights permits for allowed. notifications. As an alternative to constructing taller walls,the homes could be set back farther from DCAn7a Boulevard and Mascot Boulevard. Increasing the setback would allow a lower height noise wall to achieve the desired exterior noise environment. However,such setbacks could reduce overall project density if lot sizes were not reduced,and thus impact(lie project's goals for affordable housing,non-auto related transportation and associated benefits regarding air quality and noise. NOISE-2: Mechanical ventilation in homes shall be supplied for the two rows of lots on the east side of Central Parkway,two rows west of DeAnza Boulevard and north Mascot Boulevard and to Review at time of building SJCCDD Prior to issuance of the first row of homes south of Mountain House Boulevard. permit application. building permits.