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City of Pleasanton—Hidden Canyon Residences and Preserve Air Quality Draft EIR 3.2-32 FirstCarbon Solutions https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/3 - Draft EIR/21480016 Sec03-02 Air Quality.docx Level of Significance Before Mitigation Less than significant impact. Mitigation Measures None. Sensitive Receptors Exposure to Pollutant Concentrations Impact AIR-3: The proposed project would not expose sensitive receptors to substantial pollutant concentrations. Impact Analysis The proposed project would develop 30 single-family homes along with an internal connecting road 29 and is not expected to expose sensitive receptors to substantive DPM or TAC concentration during construction or operational activity. Construction To evaluat e the potential health risks associated with construction of a proposed project, the BAAQMD recommends identifying receptors that may be partially affected by the proposed project. Receptors include people occupying or residing in residential dwellings (including temporary housing), places of business, educational facilities (schools, colleges, or universities), daycare centers, hospitals, detention centers, and senior-care facilities. According to BAAQMD guidance, when identifying receptors that may be affected by the proposed project, no specific project radius is recommended. As described in the Project Description, the proposed project would demolish and reconstruct two existing single-family homes, construct 28 new single-family homes on 30 separate lots, and construct a connecting road with two entry/exit points along Dublin Canyon Road on a 128.5-acre development site. The site currently occupied by the Oak Hills Congregational Church, located at the northeast corner of the site, would continue to operate as under existing conditions. More than 80 percent of the construction activity (25 of the 30 homes and the portion of the connecting road to those 25 homes) will take place on the southern half of the project site, which is located approximately 850 feet to 1,500 feet from existing residences (existing residences are located across Dublin Canyon Road to the north of the proposed project site and located to the west of the proposed project site). The remaining five lots with five single-family homes will be constructed on the northern portion of the site (closer to Dublin Canyon Road), along with the portion of the new road connecting those homes to Dublin Canyon Road and the entry and exit points of the new road to Dublin Canyon Road. Construction of these five homes and the northern portion of the connecting road (within the site and connecting to Dublin Canyon Road) will occur at distances of 300 feet to 700 feet from existing residential homes. 29 The proposed project includes the construction of 28 new detached single-family residential units, the reconstruction of two existing single-family, and roadways on approximately 11.4 acres. The total project site would comprise approximately 130.90-acres, including the 11.4-acre development site, the 117.1-acre open space, and the 2.40-acre church site. Three of the proposed housing plans include ADU options ranging in size from 394 square feet to 720 square feet.