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NRC Equity Fund 1 <br /> 5.1 Mitigation of Impact <br /> The construction and operational noise levels are above County daytime standards <br /> at the source but this is mitigated completely by distance and, at all sensitive <br /> receptor locations, the noise is reduced to levels below the County-specified <br /> Equivalent Continuous Sound Level (Leq). Distance is verifiably the mitigating <br /> factor that renders the planned activities insignificant noise factors. <br /> 5.2 Construction Noise Analysis <br /> For the purpose of this report, construction activities have been divided into two <br /> short-term components: Construction site work and greenhouse installation. The <br /> reason for exploring these two components separately is that they will require <br /> different noise-generating equipment and, in the interest of due diligence, it was <br /> believed that both should be thoroughly evaluated as a basis for mitigation. The <br /> impact of the construction activities on all four noise receptors was calculated <br /> using accepted methodologies. While the Project-related short-term construction <br /> noise levels will exceed County limits at the source, they are not expected to be <br /> close to those limits by the time they reach sensitive receptor locations. <br /> EXTERIOR NOISE LEVELS GENERATED BY SHORT-TERM CONSTRUCTION ACTIVITIES <br /> CALCULATEDDECIBEL LEVEL FROM <br /> • • : EQUIVALENT CONTINUOUS • • LEVEL <br /> SOUR CE LEVEL OF <br /> PARCEL NUMBER ONSITE ORIGINAL DESTINATION DB COUNTY <br /> DB LEVEL PROJECTED -LEVEL LIMITS <br /> 5132010 - 1,457 Feet—444 Meters 93.1 22.2 50 <br /> 5132006 2,028 Feet — 618 Meters 93.1 18.4 50 <br /> 05132007 - 1,955 Feet— 596 Meters 93.1 18.9 50 <br /> 5132005 - 710 Feet— 216 Meters 93.1 29.6 50 <br /> 5129031 - 900 Feet— 274 Meters 93.1 38.5 50 <br /> 5129006 - 961 Feet— 293 Meters 93.1 26.5 50 <br /> 05129005 - 1,139 Feet— 347 Meters 93.1 24.8 50 <br /> 5129023 - 1,500 Feet— 457 deters 93.1 21.9 50 <br /> 5132013 - 1,088 Feet— 332 Meters 93.1 25.3 50 <br /> 05132011 - 743 Feet — 226 Meters 93.1 29.1 50 <br /> 05131032 - 1,364 Feet— 416 Meters 93.1 22.9 E: 50 <br /> 05131049 - 1,410 Feet— 430 Meters 93.1 22.5 50 <br /> 5131051 - 1,471 Feet— 448 Meters 93.1 22.1 50 <br /> 5131046 - 1,625 Feet— 495 Meters 93.1 21.0IF 50 <br /> Page 21 54 <br />