Saticoy & Wells Community Plan & Development ... - City Of Ventura

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Saticoy & Wells Community Plan and Code EIRSection 4.11 NoiseCOMMUNITY NOISE EXPOSURELAND USE CATEGORY Ldn or CNEL, dBARESIDENTIAL - LOW DENSITYSINGLE FAMILY, DUPLEX,MOBILE HOMES55 60 65 70 75 80 85RESIDENTIAL - MULTI-FAMILYTRANSIENT LODGING - MOTELS,HOTELSSCHOOLS, LIBRARIES,CHURCHES, HOSPITALS,NURSING HOMESAUDITORIUMS, CONCERTHALLS, AMPHITHEATRESSPORTS ARENA, OUTDOORSPECTATOR SPORTSPLAYGROUNDS,NEIGHBORHOOD PARKSGOLF COURSES, RIDINGSTABLES, WATER RECREATION,CEMETERIESOFFICE BUILDINGS, BUSINESSCOMMERCIAL ANDPROFESSIONALINDUSTRIAL, MANUFACTURING,UTILITIES, AGRICULTURENORMALLY ACCEPTABLESpecified land use is satisfactory, basedupon the assumption that any buildingsinvolved are of normal conventionalconstruction, without any special noiseinsulation requirements.NORMALLY UNACCEPTABLENew construction or development shouldgenerally be discouraged. If new constructionor development does proceed, a detailed analysisof the noise reduction requirements must bemade and needed noise insulation featuresincluded in the designCONDITIONALLY ACCEPTABLENew construction or development shouldbe undertaken only after a detailed analysisof the noise reduction requirements is madeand needed noise insulation features includedin the design. Conventional construction, butwith closed windows and fresh air supplysystems or air conditioning will normallysuffice.CLEARLY UNACCEPTABLENew construction or development shouldgenerally not be undertaken.Source: Guidelines for the Preparation and Content of Noise Elements of the General Plan,California Office of Planning and Research, 1998.Noise Compatibility MatrixFigure 4.11-1City of Ventura
Saticoy & Wells Community Plan and Code EIRSection 4.11 NoiseThe noise matrix is grouped into land uses that rate the “acceptability” of noise for those uses.Denotation of a land use as “clearly acceptable” implies that the highest noise level in that bandis the maximum desirable for existing or conventional construction that does not incorporateany special acoustical treatment. In general, evaluation of land use that fall into the “normallyacceptable,” “conditionally acceptable,” or “normally unacceptable” noise environments shouldanalyze other potential factors that would affect the noise environment. These includeconsideration of the type of noise source, the sensitivity of the noise receptor, the noisereduction likely to be provided by structures, and the degree to which the noise source mayinterfere with speech, sleep, or to other activities characteristic of the land use.The noise standards shown in Table 4.11-2 apply to any noise-generating activity that exceedsthe applicable level for a cumulative period of more than 30 minutes in any hour. For noiselevels that last less than 30 minutes, the following standards apply: maximum noise levelsequal to the value of the noise standard plus 5 dBA for a cumulative period of no more than 15minutes in any hour, 10 dBA for a cumulative period of no more than 5 minutes in any hour, 15dBA for a cumulative period of no more than 1 minute in any hour, or 20 dBA for any period oftime. If the ambient sound level exceeds the allowable exterior standard, the ambient levelsbecome the standard.Table 4.11-2City of Ventura Exterior Noise StandardsTime Period ZONE I ZONE II ZONE III ZONE IV7 A.M. to 10 P.M. 50 dBA 50 dBA 60 dBA 70 dBA10 P.M. to 7 A.M. 45 dBA 45 dBA 55 dBA 70 dBASource: City of Ventura Municipal Code § 10.650.130B.For all multi-family residential units within zones I or II, daytime (7 a.m.–10 p.m.) noise levelsshall not exceed 45 dBA and nighttime (10pm-7am) shall not exceed 40 dBA (Section 10.650.130C.1).Section 10.650.150 of the Ordinance exempts construction activities from the above standards,provided that they are conducted between 7 A.M. and 8 P.M. Construction activity is permittedbetween the hours of 8 pm and 7 am, provided that the noise levels do not exceed the standardsspecified in Table 4.11-2.City of Ventura General Plan. The 2005 General Plan sets the interior noise standard forhabitable rooms of new residences at 45 dBA CNEL (Policy 7E, Action 7.32). The exterior levelfor usable outdoor recreation space (patios, gardens, etc.) of both new single and multi-familyresidential structures is 65 dBA CNEL (Policy 7E, Action 7.32).4.11-4City of Ventura
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Saticoy & Wells Community Plan & Development ... - City Of Ventura

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