Tijuana River Valley Regional Park Campground and Education Center

Transcription

1 Tijuana River Valley Regional Park Campground and Education Center Draft Report September 2018 Prepared for: County of San Diego 5500 Overland Avenue, Suite 410 San Diego, CA Prepared by: 3900 Fifth Avenue, Suite 310 San Diego, CA 92103

2 Page ii Tijuana River Valley Regional Park Campground

3 Table of Contents 1.0 Introduction Project Description Analysis Methodology Level of Service Definition Unsignalized Intersection Analysis Determination of Significant Impacts Existing Conditions Project Study Area Existing Study Area Traffic Volumes Existing Traffic Operations Analysis Proposed Project Project Trip Generation Trip Distribution & Assignment Existing Plus Project Conditions Existing Plus Project Study Area Traffic Volumes Existing Plus Project Traffic Operations Analysis Impact Significance and Mitigation Cumulative Conditions Project Driveways and Sight Distance Analysis Sight Distance Field Review/Calculations Summary of Findings Conclusions Appendices Appendix A Traffic Counts Appendix B Peak Hour Intersection Capacity Worksheets Existing Conditions Appendix C Trip Generation Excerpts from the Bayside Performance Park Enhancement Project Appendix D Peak Hour Intersection Capacity Worksheets Existing Plus Project Conditions Page i Tijuana River Valley Regional Park Campground

4 List of Tables Table 2.1 Level of Service Definitions... 5 Table 2.2 County of San Diego Roadway Classification and LOS Standards... 6 Table 2.3 Unsignalized Intersection LOS Criteria... 7 Table 2.4 Measures of Significant Project Impacts to Congestion Allowable Increases on Congested Road Segments... 7 Table 3.1 Roadway Segment Level of Service Existing Conditions Table 3.2 Peak Hour Intersection Level of Service Results Existing Conditions Table 4-1 Proposed Project Tip Generation Table 5.1 Roadway Segment Level of Service Existing Plus Project Conditions Table 5.2 Peak Hour Intersection Level of Service Results Existing Plus Project Conditions Table 7.1 Standard Corner Sight Distance at Intersections Table 7.2 Standard Stopping Sight Distance at Intersections Table 7.3 Sight Distance Analysis Results List of Figures Figure 1-1 Project Regional Location... 2 Figure 1-2 Project Site Plan... 3 Figure 1-3 Project Study Area... 4 Figure 3-1 Existing Roadway Geometrics... 9 Figure 3-2 Existing Traffic Volumes Figure 4-1 Proposed Project Trip Distribution Figure 4-2 Proposed Project Trip Assignment Figure 5-1 Existing Plus Project Traffic Volumes Figure 7-1 Corner Sight Distance Looking East on Monument Road from Driveway # Figure 7-2 Corner Sight Distance Looking West on Monument Road from Driveway # Figure 7-3 Stopping Sight Distance Looking West on Monument Road towards Driveway # Figure 7-4 Stopping Sight Distance Looking East on Monument Road towards Driveway # Figure 7-5 Corner Sight Distance Looking North on Saturn Boulevard from Driveway # Figure 7-6 Corner Sight Distance Looking South on Saturn Boulevard from Driveway # Figure 7-7 Stopping Sight Distance Looking North on Saturn Boulevard towards Driveway # Figure 7-8 Stopping Sight Distance Looking South on Saturn Boulevard towards Driveway # Page ii Tijuana River Valley Regional Park Campground

5 1.0 Introduction The purpose of this report is to identify any vehicular impacts associated with the proposed Tijuana River Valley Regional Park Campground and Education Center (Proposed Project), to be developed by the County of San Diego Department of Parks and Recreation. 1.1 Project Description The Proposed Project is located in the City of San Diego s Tijuana River Valley community. The Proposed Project involves the development of a 79-acre campground and education center near the western boundary of the Tijuana River Valley Regional Park and just east of the Border Field State Park, west of Hollister Street and north of Monument Road. The campground and education center will be operated by the County of San Diego Department of Parks and Recreation. The campground is expected to serve lower income families from local neighborhoods, as well as the greater San Diego County region. The nature education center is intended for families and school/youth groups, including disadvantaged youth who may not have had the opportunity to experience camping in a natural environment. The Proposed Project will include 79 campsites that will serve a variety of uses including: multi-use campsites, tent campsites, yurts (round tents), and equestrian campsites. Each campsite will include a picnic table, barbecue, and fire ring. No hookups for power, water, etc. will be included at any campsite. Site amenities are expected to include restrooms/coin-showers, an office, entry booth, and circulation roads. Nature play and interpretive areas will serve as gathering places for all campers. The Proposed Project will feature a day-use outdoor nature education center available to local residents and visitors. Campers, families, and school/youth groups will have access to a nature trail with interpretive panels, an amphitheater for educational programs, and nature play areas for kids and youth. Adjacent to the day-use area, a group camping area will provide overnight accommodations in a yurt village for school/youth groups and large families. Site activities are anticipated to be associated with primitive camping, trail use (hiking and equestrian) and use of the outdoor nature education areas. Large events will not be allowed at the site. The Proposed Project s regional location is shown in Figure 1-1, while Figure 1-2 and Figure 1-3 display the Proposed Project site plan and study area, respectively. Page 1 Tijuana River Valley Regional Park Campground

6 City of Oceanside City of Vista 15 City of Carlsbad }þ 78 City of San Marcos City of Escondido 5 City of Encinitas Unincorporated County City of Solana Beach City of Del Mar }þ 56 City of Poway City of San Diego 805 }þ 52 City of Santee }þ 67 }þ City of La Mesa }þ 125 City of El Cajon City of Coronado }þ 94 City of Lemon Grove }þ 94 City of National City }þ 54 N0 2 4 Miles Tijuana River Valley Park Campground Project Site City of Imperial Beach 5 ^ }þ 905 City of Chula Vista 805 City of San Diego }þ 125 Tijuana, B.C., Mexico Figure 1-1 Project Regional Location

7 Tijuana River Valley Park Campground Figure 1-2 Project Site Plan

8 Project Area Study Roadway Segment! Study Intersection!( Driveway HOLLISTER ST Project Driveway #1 Project Site Project Driveway #2!( 2 SATURN BLVD!( 1 MONUMENT RD! 1 N ,000 Feet Tijuana River Valley Park Campground Figure 1-3 Project Study Area

9 2.0 Analysis Methodology The traffic analyses prepared for this technical memorandum were performed in accordance with the County of San Diego Traffic Impact Guidelines and the California Environmental Quality Act (CEQA) project review process, as the Proposed Project involves development of a County of San Diego park. Considering the study area includes an intersection and roadway segments located within the City of San Diego, the intersection and roadway segment analyses were prepared consistent City of San Diego Traffic Impact Study Manual. County Guidelines require that the project study area includes all County Mobility Element roadways and intersections where the Proposed Project is projected to add 25 or more peak hour trips in addition to 200 or more average daily trips (ADT). 2.1 Level of Service Definition Level of Service (LOS) is a quantitative measure describing operational conditions within a traffic stream, and the motorist s and/or passenger s perception of operations. A LOS definition generally describes these conditions in terms of such factors as delay, speed, travel time, freedom to maneuver, interruptions in traffic flow, queuing, comfort, and convenience. Table 2.1 describes generalized definitions of the various LOS categories (A through F) as applied to roadway operations. Table 2.1 Level of Service Definitions LOS Category A B C D E F Definition of Operation This LOS represents a completely free-flow condition, where the operation of vehicles is virtually unaffected by the presence of other vehicles and only constrained by the geometric features of the highway and by driver preferences. This LOS represents a relatively free-flow condition, although the presence of other vehicles becomes noticeable. Average travel speeds are the same as in LOS A, but drivers have slightly less freedom to maneuver. At this LOS, the influence of traffic density on operations becomes marked. The ability to maneuver within the traffic stream is clearly affected by other vehicles. At this LOS, the ability to maneuver is notably restricted due to traffic congestion, and only minor disruptions can be absorbed without extensive queues forming and the service deteriorating. This LOS represents operations at or near capacity. LOS E is an unstable level, with vehicles operating with minimum spacing for maintaining uniform flow. At LOS E, disruptions cannot be dissipated readily thus causing deterioration down to LOS F. At this LOS, forced or breakdown of traffic flow occurs, although operations appear to be at capacity, queues form behind these breakdowns. Operations within queues are highly unstable, with vehicles experiencing brief periods of movement followed by stoppages. Source: Highway Capacity Manual (2010) Page 5 Tijuana River Valley Regional Park Campground

10 Roadway Segment Level of Service Thresholds Roadway segment LOS standards and thresholds provide the basis for analysis of roadway segment performance. The LOS analysis is based on the functional classification of the roadway, the maximum capacity, roadway geometrics, and existing or forecast ADT. Table 2.2 displays the roadway segment capacity and LOS standards utilized to analyze roadway segments within the City of San Diego. The two study area roadway segments, Monument Road and Hollister Street, were both analyzed as 2- Lane Collector (w/o Two-Way Left-Turn Lane) roadways. Table 2.2 City of San Diego Roadway Segment Daily Capacity and Level of Service Standards Roadway Functional Classification Lanes Level of Service A B C D E Freeway 8 60,000 84, , , ,000 Freeway 6 45,000 63,000 90, , ,000 Freeway 4 30,000 42,000 60,000 70,000 80,000 Expressway 6 30,000 42,000 60,000 70,000 80,000 Prime Arterial 8 35,000 50,000 70,000 75,000 80,000 Prime Arterial 6 25,000 35,000 50,000 55,000 60,000 Major Arterial 7 22,500 31,500 45,000 50,000 55,000 Major Arterial 6 20,000 28,000 40,000 45,000 50,000 Major Arterial 5 17,500 24,500 35,000 40,000 45,000 Major Arterial 4 15,000 21,000 30,000 35,000 40,000 Major Arterial 3 11,250 15,750 22,500 26,250 30,000 Major Arterial 2 7,500 10,500 15,000 17,500 20,000 Major Arterial (one-way) 3 12,500 16,500 22,500 25,000 27,500 Major Arterial (one-way) 2 10,000 13,000 17,500 20,000 22,500 Collector (w/ two-way left turn lane) 4 10,000 14,000 20,000 25,000 30,000 Collector (w/ two-way left turn lane) 3 7,500 10,500 15,000 18,750 22,500 Collector (w/ two-way left turn lane) 2 5,000 7,000 10,000 13,000 15,000 Collector (w/o two-way left turn lane) 4 5,000 7,000 10,000 13,000 15,000 Collector (w/o two-way left turn lane) 3 4,000 5,000 7,500 10,000 11,000 Collector (w/o two-way left turn lane) 2 2,500 3,500 5,000 6,500 8,000 Collector (w/o two-way left turn lane) no fronting property 2 4,000 5,500 7,500 9,000 10,000 Collector (one-way) 3 11,000 14,000 19,000 22,500 26,000 Collector (one-way) 2 7,500 9,500 12,500 15,500 17,500 Collector (one-way) 1 2,500 3,500 5,000 6,500 7,500 Sub-Collector (single-family) , Source: City of San Diego Traffic Impact Study Manual (1998); Updated with input from City of San Diego Planning Department Mobility Staff (2017) Page 6 Tijuana River Valley Regional Park Campground

11 2.2 Unsignalized Intersection Analysis The unsignalized intersection of Hollister Street and Monument Road was analyzed using the 2010 Highway Capacity Manual unsignalized intersection analysis methodology. The SYNCHRO 10.0 Traffic Analysis software supports this methodology and was utilized to produce LOS results. The LOS for a side street stop controlled (SSSC) intersection is determined by the computed control delay and is defined for each minor movement. Table 2.3 summarizes the LOS criteria for unsignalized intersections. Table 2.3 Unsignalized Intersection LOS Criteria Average Control Delay (sec/veh) Level of Service (LOS) <10.0 A B C D E >50.0 F Source: Highway Capacity Manual (2010) 2.3 Determination of Significant Impacts This section outlines the thresholds for determining significant project-related impacts to roadways, intersections, and freeways in the City of San Diego. A significant impact is identified when the addition of a project s traffic results in a level of service dropping from LOS D or better to LOS E or F. Table 2.5 summarizes the significant impact thresholds for facilities operating at substandard level of service with and without the project. Where a roadway segment operates at LOS E or F, if the intersections at the ends of the segment and a peak hour arterial analysis for the same segment result in acceptable LOS with the project; then the project impacts would be less than significant. If either the intersections or segment under arterial analysis do not operate acceptably, the impact would be significant. LOS with Project Table 2.5 City of San Diego Measures of Significant Project Traffic Impacts Allowable Change Due to Impact Freeways Roadway Segments Intersections Ramp Metering* V/C Speed (mph) V/C Speed (mph) Delay (sec) Delay (min) E F Source: CEQA Significance Determination Thresholds, City of San Diego Development Services Department (2007) Note: * For metered freeway ramps, LOS does not apply. However, ramp meter delays above 15 minutes are considered excessive. Page 7 Tijuana River Valley Regional Park Campground

12 3.0 Existing Conditions This section describes the study area segments and intersection, existing daily roadway and peak hour intersection traffic volume information, as well as the LOS analysis results under the Existing Conditions. 3.1 Project Study Area Existing Roadway Network Monument Road is an east-west roadway, running between the Pacific Ocean and Old Dairy Mart Road in the southwestern corner of San Diego County, near the US-Mexico International Border. Within the project study area, Monument Road is a 2-Lane Collector (w/o Two-Way Left-Turn Lane) roadway with a posted speed limit of 35 MPH between Saturn Boulevard and Hollister Street and a posted speed limit of 15 MPH in front of the Proposed Project site, west of Saturn Boulevard. Parking restrictions are not posted within the study area, nor are there bicycle facilities or sidewalks present. Hollister Street is a north-south roadway, running between Coronado Avenue at the I-5 Overpass and Monument Road. Within the project study area, Hollister Street a 2-Lane Collector (w/o Two-Way Left- Turn Lane) roadway with a posted speed limit of 35 MPH. Parking restrictions are not posted within the study area, nor are there bicycle facilities or sidewalks present. Study Intersections 1. Hollister Street/Monument Road 3.2 Existing Study Area Traffic Volumes Study area roadway segment and study area intersection traffic counts were conducted in November 2017 and are provided in Appendix A. Figure 3-1 displays the existing roadway geometrics, while Figure 3-2 displays the existing traffic volumes. Page 8 Tijuana River Valley Regional Park Campground

13 2-Lane Collector w/o TWLTL 2-Lane Collector w/o TWLTL Project Site Tijuana River Valley Park Campground! 1 Figure 3-1 Existing Roadway Geometrics HOLLISTER ST 2-Lane Collector w/o TWLTL MONUMENT RD SATURN BLVD Lane Geometry Stop Sign N ,000 Feet

14 XX,XXX Daily Traffic Volumes AM / PM AM / PM AM / PM Peak Hour Intersection Turning Movements HOLLISTER ST Project Site 184 SATURN BLVD MONUMENT RD! 1 11 / 9 4 / / 38 2 / 3 10 / 7 1 / 3 N ,000 Feet Tijuana River Valley Park Campground Figure 3-2 Existing Traffic Volumes

15 3.3 Existing Traffic Operations Analysis Level of Service analyses under Existing Conditions were conducted using the methodologies described in the previous chapter. Roadway segments and intersection LOS analysis results are discussed separately. Roadway Segment Analysis Table 3.1 displays the LOS analysis results for study area roadway segments under Existing Conditions. Table 3.1 Roadway Segment Level of Service Existing Conditions Roadway Segment ADT LOS Threshold (LOS E) Hollister Street North of Monument Road 752 8,000 A Monument Road East of Hollister Street 576 8,000 A West of Saturn Boulevard 184 8,000 A Saturn Boulevard to Hollister Street 368 8,000 A LOS Source: NDS (2017); Chen Ryan Associates (2018) As shown, all of the study area roadway segments currently operate at acceptable LOS A under Existing Conditions. Intersection Analysis Table 3.2 displays intersection LOS and average vehicle delay results for the study area intersection under Existing Conditions. LOS calculation worksheets for Existing Conditions are provided in Appendix B. Intersection Table 3.2 Peak Hour Intersection Level of Service Results Existing Conditions Traffic Control AM Peak Hour PM Peak Hour Avg. Delay (sec) LOS Avg. Delay (sec) LOS 1. Hollister Street/Monument Road SSSC 8.5 A 8.8 A Source: NDS (2017); Chen Ryan Associates (2018) Notes: SSSC = Side Street Stop Control. For SSSC intersections, the delay shown is the worst delay experienced by any of the approaches. As shown, the study intersection currently operates at an acceptable LOS A during both the AM and PM peak hours under Existing Conditions. Page 11 Tijuana River Valley Regional Park Campground

16 4.0 Proposed Project The Proposed Project consists of the following features: 79 campsites (67 on the western portion of the site + 12 at the equestrian site), including: o 25 campsites o 38 multi-use sites (12 at equestrian site) o 8 large yurts o 8 small yurts Site Amenities o Horse corral and pasture with parking for day use (up to twenty day-users anticipated) o 1 caretaker site o 1 restroom / shower / administrative office site o 1 restroom building (equestrian site) o Picnic tables, barbeques, fire rings, horseshoe pits, shade structures, and playgrounds o 22-mile trail system access Nature Education Center o Amphitheater for educational programs o Nature trail, interpretive panels, and a centrally located communal fire ring Site activities are anticipated to be associated with primitive camping, trail use (hiking and equestrian) and use of the outdoor nature education areas. Large events will not be allowed at the site. 4.1 Project Trip Generation The Proposed Project includes three land use categories that will generate vehicular trips: campsites, an outdoor nature center and a horse corral and pasture for campers and day users. Trip generation rates for the campsites were developed utilizing SANDAG s (Not So) Brief Guide of Vehicular Traffic Generation Rates for the San Diego Region (2002), while the AM/PM peak hour in- and out-trip ratios were derived from the ITE Trip Generation Manual (2012). Of the 79 total campsites, 38 are intended as multi-use sites. Considering the multi-use sites may consist of vehicles with trailers and/or recreational vehicles (RVs), a passenger car equivalent (PCE) of 2.5 was applied to these 38 sites to be conservative. The small yurts are 16 in diameter, providing a similar capacity to that of a general campsite. Therefore, the general campsite trip generation rate was utilized. The large yurts are 24 in diameter. The campsite trip generation rate was doubled for the large yurts to reflect the increased capacity of these eight sites. The AM/PM peak hour in- and out-trip ratios from the general campsite was applied to both yurt types. SANDAG, ITE, nor the City of San Diego have a trip generation rate for an outdoor nature center/amphitheater or similar facility. Trip generation rates for the outdoor nature center/amphitheater were developed by referencing the Unified Port District of San Diego s Bayside Performance Park Enhancement Project (outdoor amphitheater). A survey conducted in support of the Bayside Performance Park Enhancement Project determined 2.5 attendees arrive per car, on average. One arrival and one departure trip are assumed per seat, resulting in 2 total person trips per seat. Using the average vehicle occupancy information derived from the Bayside Performance Park Enhancement Project survey, a vehicular trip generation rate per seat was determined (2-person trips / 2.5-people per vehicle). Relevant excerpts from the Bayside Performance Park Enhancement Project are provided as Appendix C. Page 12 Tijuana River Valley Regional Park Campground

17 As a worst-case scenario, it was assumed that all nature center attendees would exit the project site during the PM peak period. Discussions with County staff indicated up to twenty (20) day users are also anticipated on a peak day for the horse corral and pasture. Considering these users are likely to arrive in vehicles with trailers, a PCE of 2.5 was applied for these day users, while the AM/PM peak hour in- and out-trip ratios for parks were used to better reflect the day use nature of these visitors. In addition to the trip generating land uses previously described, discussions with County staff indicated 2-3 employees will staff the Proposed Project site throughout the day. As a worst-case scenario, it was assumed that all three employees would use separate vehicles and arrive and depart during the AM and PM peak periods, respectively. Table 4-1 displays the Proposed Project trip generation, including ADT projections and AM and PM peak hour volumes. As shown, the Proposed Project is estimated to generate a total of 762 ADT on a peak day, including 58 AM peak hour trips (27-in / 32-out) and 117 PM peak hour trips (33-in / 84-out). Table 4-1 Proposed Project Tip Generation Daily AM PM Use Quantity PCE Trip Rate Trips % Trips % Trips General Campsites / site 100 7% % (3-in / 4-out) (5-in / 6-out) Multi-Use Campsites / site 380 7% % (11-in / 16-out) (18-in / 24-out) Large Yurts / site 64 7% % (2-in / 3-out) (3-in / 4-out) Small Yurts / site 32 7% % (1-in / 2-out) (2-in / 2-out) Horse Corral Day Use / user % % (7-in / 7-out) (5-in / 5-out) Nature Center / seat 80 0% % (0-in / 0-out) (0-in / 40-out) Staff / staff 6 50% % (3-in / 0-out) (0-in / 3-out) Total (27-in / 32-out) (33-in / 84-out) Source: SANDAG (Not So) Brief Guide (2002); ITE Trip Generation Manual (2012); Chen Ryan Associates (2018) 4.2 Trip Distribution & Assignment The roadway network provides two points of ingress and egress to the Proposed Project site: Hollister Street to the north, and Monument Road to the east. Both of these roads lead to Interstate 5, while Hollister Street also provides access to State Route 905. The Proposed Project trip distribution was developed considering these access points and greater network connections as well as the Proposed Project intent to serve lower income families from local neighborhoods. The trip distribution also reflects the location of the two entrances (one on Monument Road, the other on Saturn Boulevard) and the traffic associated with each entrance based on the site plan depicted in Figure 1-2. Figure 4-1 displays the Proposed Project trip distribution. Daily traffic and AM/PM peak hour project trips were assigned to the roadway network based on the Proposed Project trip distribution. Figure 4-2 displays the Proposed Project trip assignment. Page 13 Tijuana River Valley Regional Park Campground

18 Project Area Study Roadway Segment! Study Intersection HOLLISTER ST Project Driveway #1!( 1 Project Site 71% Project Driveway #2!( 2 29% SATURN BLVD 100% 40% MONUMENT RD 60%! 1 N ,000 Feet Tijuana River Valley Park Campground Figure 4-1 Proposed Project Trip Distribution

19 XX,XXX Daily Traffic Volumes AM / PM AM / PM AM / PM Peak Hour Intersection Turning Movements HOLLISTER ST Project Driveway #1!( 1 Project Site 20 / / 22 Project Driveway #2!( SATURN BLVD 12 / / MONUMENT RD 458! 1 16 / 20 0 / 0 0 / 0 11 / 13 N ,000 Feet 19 / / 34 Tijuana River Valley Park Campground Figure 4-2 Proposed Project Trip Assignment

20 5.0 Existing Plus Project Conditions This section provides an analysis of existing traffic conditions with the addition of traffic from the Proposed Project. 5.1 Existing Plus Project Study Area Traffic Volumes Existing Plus Project traffic volumes were derived by combining the existing traffic volumes (displayed in Figure 3-1) and the project trip assignment volumes (displayed in Figure 4-1). Figure 5-1 displays Existing Plus Project traffic volumes. 5.2 Existing Plus Project Traffic Operations Analysis Level of Service analyses under Existing Plus Project Conditions were conducted using the methodologies described in Chapter 2. Roadway segments and intersection LOS analysis results are discussed separately. Roadway Segment Analysis Table 5.1 displays the LOS analysis results for study area roadway segments under Existing Plus Project Conditions. Table 5.1 Roadway Segment Level of Service Existing Plus Project Conditions Roadway Segment ADT Hollister Street Monument Road LOS Threshold (LOS E) LOS Existing Conditions ADT Increase in ADT Significant Impact? North of Monument Road 1,210 8,000 A No East of Hollister Street 881 8,000 A No West of Saturn Boulevard 946 8,000 A No Saturn Boulevard to Hollister Street 910 8,000 A No Source: NDS (2017); Chen Ryan Associates (2018) As shown, all of the study area roadway segments are anticipated to operate at acceptable LOS A under Existing Plus Project conditions. Page 16 Tijuana River Valley Regional Park Campground

21 XX,XXX Daily Traffic Volumes AM / PM AM / PM AM / PM Peak Hour Intersection Turning Movements HOLLISTER ST Project Driveway #1 Project Site 946 Project Driveway #2!( 2 SATURN BLVD 11 / 11 0 / 0 0 / 0 0 / 0 12 / 13 1,210!( 1 N ,000 Feet 0 / 0 20 / 71 0 / 0 11 / / / MONUMENT RD! 1 27 / 29 4 / / / / / 16 Tijuana River Valley Park Campground Figure 5-1 Existing Plus Project Traffic Volumes

22 Intersection Analysis Table 5.2 displays intersection LOS and average vehicle delay results for the study area intersection and two Proposed Project Driveways under Existing Plus Project Conditions. LOS calculation worksheets for Existing Plus Project Conditions are provided in Appendix D. Intersection Table 5.2 Peak Hour Intersection Level of Service Results Existing Plus Project Conditions Traffic Control AM Peak Hour Avg. Delay (sec) LOS PM Peak Hour Avg. Delay (sec) LOS Existing Delay (AM/PM) Change in Delay Significant Impact? 1. Hollister Street/Monument Road SSSC 8.6 A 9.4 A 8.5 / / 0.6 No 2. Driveway #1/Monument Road SSSC 8.8 A 9.0 A N/A N/A No 3. Driveway #2/Saturn Boulevard SSSC 8.4 A 8.4 A N/A N/A No Source: Chen Ryan Associates (2018) Notes: SSSC = Side-Street-Stop Control. For SSSC intersections, the delay shown is the worst delay experienced by any of the approaches. As shown in Table 5.2, the study intersection and Proposed Project Driveways are anticipated to operate at an acceptable LOS A during the AM and PM peak hours under the Existing Plus Project Conditions. 5.3 Impact Significance and Mitigation Based upon the significance criteria presented Section 2.3 of this report, the addition of Proposed Project traffic would not be associated with any identified significant traffic-related impacts. Therefore, no mitigation measures would be required under Existing Plus Project Conditions. Page 18 Tijuana River Valley Regional Park Campground

23 6.0 Cumulative Conditions The Proposed Project is located at the southwestern most point in the United States, just north of the US- Mexico International Border and west of the Pacific Ocean, and is surrounded by lands conserved by federal, state and local jurisdictions, greatly limiting the potential for neighboring developments. Discussions with County of San Diego and City of San Diego staff did not indicate any cumulative projects in the vicinity of the Proposed Project site. The Cumulative Conditions analysis was therefore determined to be equivalent to the Existing Conditions analysis, and the Cumulative Plus Project Conditions analysis equivalent to the Existing Plus Project Conditions analysis, consequently no subsequent analyses are required. Further, the Proposed Project is consistent with the County of San Diego s General Plan and the City of San Diego s General Plan Recreation Element to develop a Regional Park, therefore, no Horizon Year analysis is required. Page 19 Tijuana River Valley Regional Park Campground

24 7.0 Project Driveways and Sight Distance Analysis The Proposed Project includes two driveways as shown in Figure 1-2 and Figure 1-3. Driveway #1 will serve as the primary campground access control/check-in booth and will be located along the north side of Monument Road, where a driveway currently exists. Driveway #2 will provide access to the equestrian sites, corral and day use parking lot, located along the west side of Saturn Boulevard, approximately 290 north of Monument Road. The following comments are based upon review of the Proposed Project site plan and conditions observed in the field: Existing vegetation and potential signage surrounding each Proposed Project driveway must be considered when constructing the driveway locations. Existing vegetation precludes adequate sight distance at Driveway #1 and #2 and should be removed or maintained in a manner that it does not obstruct sight distance. A County-controlled gate currently restricts access north of Driveway #2 along Saturn Boulevard. If this gate is anticipated to remain locked, site distance north of the driveway may not be necessary. Both Proposed Project Driveways should be side street stop-controlled intersections. The Proposed Project Driveways should be designed in accordance County standards and should have sufficient storage for traffic exiting the Proposed Project. 7.1 Sight Distance A sight distance study was performed utilizing intersection sight distance criteria found in the Caltrans Highway Design Manual to evaluate both corner and stopping sight distance. Corner Sight Distance - is measured along the direction of travel from a point on the minor road at least 10 feet from the edge of the major road pavement. It is measured from an eye height of 3.5 feet on the minor road to a height of an object 4.25 feet on the major road. Stopping Sight Distance - is measured from the driver's eyes, which are assumed to be 3½ feet above the pavement surface, to an object ½-foot high on the road. Speed - the roadway design speed is used to determine the minimum sight distance requirement, which shall be the greater than the current prevailing speed (if known) and the minimum design speed of the respective road classification. Caltrans Highway Design Manual sight distance criteria is displayed in Table 7.1 and 7.2. Page 20 Tijuana River Valley Regional Park Campground

25 Table 7.1 Standard Corner Sight Distance at Intersections Design Speed (mph) Minimum Corner Intersection Sight Distance (ft) Source: Caltrans Highway Design Manual (2016) Table 7.2 Standard Stopping Sight Distance at Intersections Design Speed (mph) Minimum Stopping Sight Distance (ft) Source: Caltrans Highway Design Manual (2016) 7.2 Field Review/Calculations An engineering field study was conducted for the Proposed Project Driveways utilizing the aforementioned methods to determine the corner sight distance. Along the Proposed Project frontage, Monument Road is a 2-lane roadway with no median and 10-foot wide travel lanes in each direction. The posted speed limit on Monument Road, just east of Driveway #1 is 15 MPH. Saturn Boulevard is an unimproved 2-lane dirt road with no posted speed limit. To be conservative, a speed limit of 25 MPH was assumed for both Monument Road and Saturn Boulevard. Figures 7-1 through Figure 7-4 display the driver s view from Proposed Project Driveway #1 looking towards the east-west directions, as well as the view of a driver approaching the Proposed Project Driveway along Monument Road. Figures 7-5 through Figure 7-8 display the driver s view from Proposed Project Driveway #2 looking towards the north-south directions, as well as the view of a driver approaching the Proposed Project Driveway along Saturn Boulevard. Page 21 Tijuana River Valley Regional Park Campground

26 Figure 7-1 Corner Sight Distance Looking East on Monument Road from Driveway #1 70 Figure 7-2 Corner Sight Distance Looking West on Monument Road from Driveway #1 117 Page 22 Tijuana River Valley Regional Park Campground

27 Figure 7-3 Stopping Sight Distance Looking West on Monument Road towards Driveway #1 63 Figure 7-4 Stopping Sight Distance Looking East on Monument Road towards Driveway #1 123 Page 23 Tijuana River Valley Regional Park Campground

28 Figure 7-5 Corner Sight Distance Looking North on Saturn Boulevard from Driveway #2 430 Figure 7-6 Corner Sight Distance Looking South on Saturn Boulevard from Driveway #2 205 Page 24 Tijuana River Valley Regional Park Campground

29 Figure 7-7 Stopping Sight Distance Looking North on Saturn Boulevard towards Driveway #2 315 Figure 7-8 Stopping Sight Distance Looking South on Saturn Boulevard towards Driveway #2 197 Page 25 Tijuana River Valley Regional Park Campground

30 Table 7.3 displays the design speed, the measured sight distances, the respective minimum corner and stopping sight distance requirements, and whether or not the existing sight distance is adequate. Location Speed Limit Table 7.3 Sight Distance Analysis Results Measured (ft) Corner Sight Distance Required (ft) Adequate? Measured (ft) Stopping Sight Distance Required (ft) Adequate? East of Driveway # No No West of Driveway # No No North of Driveway # No Yes South of Driveway # Yes Yes Source: Caltrans Highway Design Manual (2016); Chen Ryan Associates (2018) As shown in the table above, with the exception of south of Proposed Project Driveway #2, the Proposed Project Driveways do not currently meet Caltrans sight distance requirements due to the presence of vegetation. Following Proposed Project construction, yet prior to Proposed Project opening, it is recommended that the vegetation is removed or trimmed and maintained, and a new sight distance study is conducted showing adequate sight distances are provided in accordance with Caltrans standards. Page 26 Tijuana River Valley Regional Park Campground

31 8.0 Summary of Findings The following points summarize the roadway segment analysis: 1. Existing Conditions All roadway segments within the project study area operate at LOS A under the Existing Conditions and are projected to continue operating at LOS A under Existing Plus Project Conditions. 2. Cumulative Conditions (Near-Term) No cumulative projects were identified within the vicinity of the project study area. Additional neighboring development(s) are not likely due to the conservation of land adjacent to the Proposed Project site and throughout the Tijuana River Valley by federal, state and local jurisdictions. Cumulative Conditions were therefore determined to be equivalent to Existing Conditions, and Cumulative Plus Project Conditions equivalent to Existing Plus Project Conditions. Consequently, roadway segments within the project study area are projected to continue operating at LOS A under Cumulative and Cumulative Plus Project Conditions. The following points summarize the intersection analysis: 1. Existing Conditions The study intersection currently operates at LOS A under Existing Conditions and is projected to continue to operate at LOS A under Existing Plus Project Conditions. Additionally, both Proposed Project Driveways are projected to operate at LOS A under Existing Plus Project Conditions. 2. Cumulative Conditions (Near-Term) Conditions No cumulative projects were identified within the vicinity of the project study area. Additional neighboring development(s) are not likely due to the conservation of land adjacent to the Proposed Project site and throughout the Tijuana River Valley by federal, state and local jurisdictions. Cumulative Conditions were therefore determined to be equivalent to Existing Conditions, and Cumulative Plus Project Conditions equivalent to Existing Plus Project Conditions. Consequently, the study intersection and Proposed Project Driveways are projected to continue to operate at LOS A under Cumulative and Cumulative Plus Project Conditions. The following point summarizes the sight distance analysis: 1. The Proposed Project Driveways do not currently meet Caltrans sight distance requirements due to the presence of vegetation. Following Proposed Project construction, yet prior to Proposed Project opening, it is recommended that a new sight distance study be conducted showing adequate sight distances are provided in accordance with Caltrans standards. 8.1 Conclusions As noted in the previous chapters, it was found that the Proposed Project trip generation would not be sufficient to result in traffic impacts at the study area roadway segments and intersection and Proposed Project Driveways. Therefore, the development of the Proposed Project will not be associated with any significant transportation related impacts. Sight distance was obstructed by existing vegetation at both Proposed Project Driveways. Following Proposed Project construction, yet prior to Proposed Project opening, it is recommended that the vegetation is removed or trimmed and maintained, and a new sight distance study is conducted showing adequate sight distances are provided in accordance with Caltrans standards. Page 27 Tijuana River Valley Regional Park Campground

32 Appendix A Traffic Counts Tijuana River Valley Regional Park Campground

33 Day: Wednesday Date: 11/1/2017 DAILY TOTALS Prepared by NDS/ATD VOLUME Monument Rd Fronting the Proposed Project Site W/O Saturn Blvd NB SB EB WB City: San Diego Project #: CA17_4336_001 Total 184 AM Period NB SB EB WB TOTAL PM Period NB SB EB WB 00: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : TOTALS TOTALS SPLIT % 50.7% 49.3% 39.7% SPLIT % 53.2% 46.8% 60.3% DAILY TOTALS DAILY TOTALS NB SB EB WB AM Peak Hour 09:45 10:30 10:30 PM Peak Hour 14:15 14:00 14:00 AM Pk Volume PM Pk Volume Pk Hr Factor Pk Hr Factor Volume Volume Peak Hour 08:00 08:00 08: Peak Hour 17:00 16:00 16: Pk Volume Pk Volume Pk Hr Factor Pk Hr Factor TOTAL Total 184

34 Day: Wednesday Date: 11/1/2017 Prepared by NDS/ATD VOLUME Monument Rd W/O Hollister St City: San Diego Project #: CA17_4336_002 DAILY TOTALS NB SB EB WB Total 368 AM Period NB SB EB WB TOTAL PM Period NB SB EB WB 00: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : TOTALS TOTALS SPLIT % 47.3% 52.7% 44.8% SPLIT % 55.2% 44.8% 55.2% DAILY TOTALS DAILY TOTALS NB SB EB WB AM Peak Hour 11:00 10:30 10:30 PM Peak Hour 14:45 13:45 14:15 AM Pk Volume PM Pk Volume Pk Hr Factor Pk Hr Factor Volume Volume Peak Hour 07:00 07:00 07: Peak Hour 16:00 16:00 16: Pk Volume Pk Volume Pk Hr Factor Pk Hr Factor TOTAL Total 368

35 Day: Wednesday Date: 11/1/2017 Prepared by NDS/ATD VOLUME Monument Rd E/O Hollister St City: San Diego Project #: CA17_4336_003 DAILY TOTALS NB SB EB WB Total 576 AM Period NB SB EB WB TOTAL PM Period NB SB EB WB 00: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : TOTALS TOTALS SPLIT % 39.3% 60.7% 30.0% SPLIT % 46.9% 53.1% 70.0% DAILY TOTALS DAILY TOTALS NB SB EB WB AM Peak Hour 11:30 08:45 08:45 PM Peak Hour 13:30 14:30 15:30 AM Pk Volume PM Pk Volume Pk Hr Factor Pk Hr Factor Volume Volume Peak Hour 08:00 07:00 08: Peak Hour 16:00 16:00 16: Pk Volume Pk Volume Pk Hr Factor Pk Hr Factor TOTAL Total 576

36 Day: Wednesday Date: 11/1/2017 Prepared by NDS/ATD VOLUME Hollister St N/O Monument Rd City: San Diego Project #: CA17_4336_004 DAILY TOTALS NB SB EB WB Total 752 AM Period NB SB EB WB TOTAL PM Period NB SB EB WB 00: : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : TOTALS TOTALS SPLIT % 53.9% 46.1% 33.8% SPLIT % 55.0% 45.0% 66.2% DAILY TOTALS DAILY TOTALS NB SB EB WB AM Peak Hour 11:45 08:45 11:45 PM Peak Hour 14:30 14:15 14:30 AM Pk Volume PM Pk Volume Pk Hr Factor Pk Hr Factor Volume Volume Peak Hour 07:00 08:00 07: Peak Hour 16:00 16:00 16: Pk Volume Pk Volume Pk Hr Factor Pk Hr Factor TOTAL Total 752

37 ID: City: San Diego Prepared by National Data & Surveying Services Hollister St & Monument Rd Peak Hour Turning Movement Count Hollister St SOUTHBOUND Day: Wednesday Date: 11/01/2017 PEAK HOURS 07:00 AM - 08:00 AM NONE 04:00 PM - 05:00 PM AM AM NOON NOON PM PM 07:00 AM - 09:00 AM NONE 04:00 PM - 06:00 PM COUNT PERIODS AM NOON PM PM NOON AM Monument Rd EASTBOUND CONTROL Way Stop(SB) TEV AM NOON PM PHF WESTBOUND Monument Rd AM NOON PM PM NOON AM Total Vehicles (AM) Total Vehicles (NOON) PM PM NOON NOON AM AM NORTHBOUND Hollister St Total Vehicles (AM) Total Vehicles (NOON) Pedestrians (Crosswalks) Total Vehicles (PM) PM NOON AM AM NOON PM PM NOON AM AM NOON PM Total Vehicles (PM) PM NOON AM AM NOON PM PM NOON AM AM NOON PM `

38 Appendix B Peak Hour Intersection Capacity Worksheets Existing Conditions Tijuana River Valley Regional Park Campground

39 HCM 2010 TWSC 1: Monument Road & Hollister Street 09/20/2018 Intersection Int Delay, s/veh 4.7 Movement EBL EBT WBT WBR SBL SBR Lane Configurations Traffic Vol, veh/h Future Vol, veh/h Conflicting Peds, #/hr Sign Control Free Free Free Free Stop Stop RT Channelized - None - None - None Storage Length Veh in Median Storage, # Grade, % Peak Hour Factor Heavy Vehicles, % Mvmt Flow Major/Minor Major1 Major2 Minor2 Conflicting Flow All Stage Stage Critical Hdwy Critical Hdwy Stg Critical Hdwy Stg Follow-up Hdwy Pot Cap-1 Maneuver Stage Stage Platoon blocked, % Mov Cap-1 Maneuver Mov Cap-2 Maneuver Stage Stage Approach EB WB SB HCM Control Delay, s HCM LOS A Minor Lane/Major Mvmt EBL EBT WBT WBR SBLn1 Capacity (veh/h) HCM Lane V/C Ratio HCM Control Delay (s) HCM Lane LOS A A - - A HCM 95th %tile Q(veh) Existing AM AM Base.syn Synchro 10 Report

40 HCM 2010 TWSC 1: Monument Road & Hollister Street 09/20/2018 Intersection Int Delay, s/veh 4.3 Movement EBL EBT WBT WBR SBL SBR Lane Configurations Traffic Vol, veh/h Future Vol, veh/h Conflicting Peds, #/hr Sign Control Free Free Free Free Stop Stop RT Channelized - None - None - None Storage Length Veh in Median Storage, # Grade, % Peak Hour Factor Heavy Vehicles, % Mvmt Flow Major/Minor Major1 Major2 Minor2 Conflicting Flow All Stage Stage Critical Hdwy Critical Hdwy Stg Critical Hdwy Stg Follow-up Hdwy Pot Cap-1 Maneuver Stage Stage Platoon blocked, % Mov Cap-1 Maneuver Mov Cap-2 Maneuver Stage Stage Approach EB WB SB HCM Control Delay, s HCM LOS A Minor Lane/Major Mvmt EBL EBT WBT WBR SBLn1 Capacity (veh/h) HCM Lane V/C Ratio HCM Control Delay (s) HCM Lane LOS A A - - A HCM 95th %tile Q(veh) Existing PM PM Base.syn Synchro 10 Report