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<br />ot;.her mobile sources will remain unchanged. Additionally, no use of <br />unusual materials or other natural resources in short supply are <br />programmed. Therefore, impacts on energy supplies and natural <br />resoarces are considered insi9Dificant. <br /> <br />~ lhf_ior-. <br /> <br />The airport lighting system recommended in the proposed airport <br />development program is considered an essential element for safe <br />operations during nighttime and marginal weather conditions. These <br />light systems will assist the pilot in locating the airport, aligning <br />the aircraft. with the apprq>ri.ate runway, aid in orientation during <br />landing, and guide the pilot. once on the ground. '!he lighting systems <br />included in the prqlOSed airport deYel.qDent are the visual approach <br />slqle indicators (VASI), runway end identified lights (REIL), lighted <br />wind cxme and segmented circle, medium intensity runway lights (MIRL), <br />and approach lighting system (MALSR). <br /> <br />The VASI and MIRL lighting systems and lighted wind cone are low <br />intensity, located close to the ground, and would create no <br />significant annoyance to areas adjacent to the airport. '!he REIL and <br />MALSR approach lights have the capability of emitting annoying light <br />emissions. However, the closest residence to these lights lies <br />approxilll8.te1y 2000 feet northwest of Runway l2. Studies indicate that <br />the distance and angle relative to the emission source should result <br />in no significant annoyance. If emissions prove objectionable, <br />optical baffles can be installed and/or the beam axis adjusted to <br />reduce or el imi nate the light annoyance. <br /> <br />Because the type, extent and location of the lighting systems proposed <br />at San Marcos have been determined to have little effect on populated <br />areas adjacent to the airport, no significant impacts relating to <br />light. emissions should result from the proposed airport development <br />pl'."CII:f.Law. <br /> <br />SOUd 1IIste <br /> <br />Solid waste collection and disposal at the airport will increase <br />slightly with increased air traffic, but will remain insignificant <br />relative to the volume of solid waste generated by the City. No known <br />volatile chemical or other hazardous waste material has been, or is <br />expected to be, disposed of at the ail:port. <br /> <br />8.12 <br />