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Lot 7, only) note in parenthesis is for clarification. The wall shall be constructed so that a panel(s) can be removed to provide reciprocal access from the project site and the adjacent northerly property (Chin Property), if requested by the northerly property owner (prior to the said wall's completion) note in parenthesis is for clarification. Within 30 days of obtaining a building permit for the soundwall, the soundwall shall be completed to the satisfaction of the Community Development Director. The design of the wall shall be consistent with the design of the wall adjacent to the freeway and the flood drainage culvert. The wall heights are referenced to the nearest building pad elevation. T. To achieve an acoustically-effective barrier, it shall be made air-tight, i.e., without cracks, gaps, or other openings and shall provide for long-term durability. The barriers can be constructed of wood, concrete, stucco, masonry, earth berm or a combination thereof and shall have a minimum surface weight of 4.0 lbs. per sq. ft. for barriers 10 ft. and taller and 2.5 lbs. per sq. ft. for barrier shorter than 10 ft. If wood fencing is used, homogeneous sheet materials are preferable to conventional wood fencing as the latter has a tendency to warp and form openings with age. However, high quality, air-tight, tongue-and-groove, shiplap, or board and batten construction can be used, provided the minimum surface weight requirement is met and the construction is air-tight. Gates may be incorporated into barriers that are less than 8 ft. high. The gate must meet the minimum surface weight requirement and shall shut tight when closed. A gap under a gate may be no more than 1". The noise control barriers must be constructed so that all joints, including connections with posts, pilasters or the building shells are sealed air- tight and no openings are permitted between the upper barrier components and the ground. Details for proposed walls/fences shall be submitted for review and approval by the Community Development Director and Chief Building Official prior to issuance of building permits. Walls/fences in excess of six feet of height may require submittal of additional engineering calculations for wind and load. U. The applicant shall install windows and glass doors with the minimum Sound Transmission Class (STC) rating according to the schedule in Table II of the Noise Assessment Study. (Because of the varying heights of the floor elevations, the floor elevations shown in the table are in reference to the garage floor elevation assumed to be 0 ft. The rear facade is the garage side of the unit. The front facade is the entry. Only units at the ends of the buildings will have one side containing windows. This shall be accomplished to the satisfaction of the Chief Building Official and shown on plans submitted for building permit review for each unit. V. The applicant shall provide some type of mechanical ventilation for all living spaces. Specifics on the mechanical ventilation shall be submitted for review and approval by the Chief Building Official prior to issuance of building permits for each unit. Agreement to Conditions June 6, 2005 PLN2004-0010] Page 10 of 29