Initial Study MND - Sonoma County Agricultural Preservation and ...

More documents

Recommendations

Info

Taylor MountainINITIAL STUDY/MITIGATED NEGATIVE DECLARATIONSonoma CountyBased on the most recent criteria published by the County of Sonoma (2002), the project wouldhave a significant traffic impact if it results in any of the following conditions.1. On-site roads and frontage improvements: Proposed on-site circulation and street frontagewould not meet the County’s minimum standards for roadway or driveway design, orpotentially result in safety hazards, as determined by the County in consultation with aregistered traffic engineer.2. Parking: Proposed on-site parking supply would not be adequate to accommodate parkingdemand.3. Emergency Access: The project site would have inadequate emergency access.4. Alternative Transportation: The project provides inadequate facilities for alternativetransportation modes (e.g., bus turnouts, bicycle racks, pedestrian pathways) and/or theproject creates potential conflicts with adopted policies, plans, or programs supportingalternative transportation.5. Road Hazards: Hazards are increased due to a design feature (e.g., sharp curves ordangerous intersections) or incompatible uses (e.g., farm equipment, heavy pedestrian ortruck traffic).6. Vehicle Queues: The addition of project traffic causes the 95 th percentile queue length toexceed roadway turn lane storage capacity.7. Signal Warrants: The addition of the project’s vehicle or pedestrian traffic causes anintersection to meet or exceed Caltrans signal warrant criteria.8. Turn Lanes: The addition of project traffic causes an intersection to meet or exceed criteriafor provision of a right or left turn lane on an intersection approach.9. Sight Lines: The project constructs an unsignalized intersection (including driveways) oradds traffic to an existing unsignalized intersection approach that does not have adequatesight lines based upon Caltrans criteria for state highway intersections and County criteriafor County roadway intersections.10. County Intersections: The County Level of Service standard for intersections is Level ofService D. The project would have a significant traffic impact if the project’s traffic wouldcause an intersection currently operating at an acceptable level of service (LOS D or better)to operate below the standard (LOS E or F).If the intersection currently operates or is projected to operate below the County standard(at LOS E or F), the project’s impact is significant and cumulatively considerable if it causesthe delay for any critical movement to increase by five seconds or more. The delay will bedetermined by comparing intersection operation with and without the project’s traffic forboth the existing baseline and projected future conditions. These criteria apply to allFinal B-110 September 2012
Taylor MountainINITIAL STUDY/MITIGATED NEGATIVE DECLARATIONcontrolled or uncontrolled intersections with projected traffic volumes over 30 vehicles perhour per approach or per exclusive left turn movement.11. County Roadway Operation: The Level of Service Standard for County roadway operationsis to maintain a Level of Service C, though there are exceptions to this standard for specificroadway segments indicated in Figure CT-3. Policy CT-3a notes, “In cases where a roadwaysegment is designated as LOS F on Figure CT-3, a PM peak volume to capacity ratio of 1.2 isthe acceptable LOS, with the exception of [specified] road segments.” The project wouldhave a significant traffic impact if the project’s traffic would cause a road currentlyoperating at an acceptable level of service to operate at an unacceptable level.The study segment of Petaluma Hill Road is identified on County General Plan Figure CT-3 asone of the streets where a volume to capacity ratio of 1.2 is considered to be an acceptable LOSper Part 12 of the County standards.The updated roadway segment analysis methodologies published in the 2010 version of theHCM determines LOS based upon the percent of time spent following, but since the County’sthresholds of significance are based upon the volume to capacity ratio, both metrics arereported in this analysis.City of Santa RosaThe City of Santa Rosa's adopted Level of Service (LOS) Standard is contained in Santa RosaGeneral Plan 2035. Standard TD-1 states that the City will try to maintain a Level of Service(LOS) D or better along all major corridors. Exceptions to meeting this standard are allowedwhere attainment would result in significant environmental degradation; where topography orenvironmental impacts make the improvement impossible; or where attainment would ensureloss of an area's unique character.Although the City’s standard does not specify criteria for intersections, for the purposes of thisstudy a minimum operation of LOS D for the overall operation of signalized intersections wasapplied, based upon the City’s LOS standard for major corridors and consistent with theCounty’s LOS standard for intersections.A summary of the applicable LOS standards is provided in Table B.3.14-8.Table B.3.14-8. Summary of LOS StandardsStudy Facility Facility Type Agency LOS StandardPetaluma Hill Rd/Kawana Springs Rd Signalized Intersection City of Santa Rosa LOS DKawana Springs Rd/Franz Kafka Rd Side-Street Stop-Controlled Intersection City of Santa Rosa LOS DKawana Terrace/Meda Ave Side-Street Stop-Controlled Intersection City of Santa Rosa LOS DKawana Springs Rd/Farmers Lane Signalized Intersection (future only) City of Santa Rosa LOS DPetaluma Hill Rd/Taylor Mountain N Driveway Side-Street Stop-Controlled Intersection County of Sonoma LOS DPetaluma Hill Rd/Taylor Mountain S Driveway Side-Street Stop-Controlled Intersection County of Sonoma LOS DPetaluma Hill Rd Arterial – Roadway Segment County of Sonoma v/c = 1.2Notes: LOS = Level of Service; v/c = volume to capacity ratioSeptember 2012 B-111 Final
Page 3:
Taylor Mountain Regional Park and O
Page 6:
Taylor MountainINITIAL STUDY/MITIGA
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72: Taylor MountainINITIAL STUDY/MITIGA
Page 121: Taylor MountainINITIAL STUDY/MITIGA
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
show all

Initial Study MND - Sonoma County Agricultural Preservation and ...

Create successful ePaper yourself

Delete template?

Save as template?