Draft Environmental Impact Report - California Off Highway Vehicle ...

TABLE 3.1­4. PEAK­HOUR LOS VOLUME THRESHOLDS BY FACILITY TYPE
Facility Type
3.1 Transportation and Traffic
Peak Hour Level of Service Capacity Threshold
A B C D E F
Two‐Lane Arterial ‐ ‐ 0–970 971–1,760 1,761–1,870 >1,870
Four‐Lane Arterial, Undivided ‐ ‐ 0–1,750 1,751–2,740 2,741–2,890 >2,890
Major Two‐Lane Collector ‐ ‐ 0–550 551–1,180 1,181–1,520 >1,520
Source: Butte County 2010; Transportation Research Board 2000
Trip Generation
To assess traffic conditions that would result from implementing the General Plan, the anticipated
visitor increases at Clay Pit SVRA were forecasted. Traffic counts conducted at the access road to
the SVRA in April 2010 were used as the initial basis for projecting future visitor increases. These
traffic counts showed that 18 vehicles accessed the site on a weekday and 62 vehicles accessed the
site on a Saturday (two‐way volumes were 36 vehicles on a weekday and 124 vehicles on Saturday
[Table 3.1‐5]). Peak‐hour traffic volumes were five vehicles on a weekday and 18 vehicles on
Saturday. Visitor statistics for Clay Pit SVRA and other SVRAs with similar climate conditions
indicate that April generally experiences high levels of OHV usage. Therefore, a 20% reduction
was applied to these April traffic counts to estimate conservative annual average conditions for
purposes of this analysis.
TABLE 3.1­5. EXISTING TRIP GENERATION FOR CLAY PIT SVRA
Daily
Weekday Saturday
PM Peak Hour
Peak Hour
Daily
In Out Total In Out Total
36 60% 40% 5 124 55% 45% 18
Source: KD Anderson & Associates 2011
Future visitation to Clay Pit SVRA may increase as the result of a combination of several factors.
The first factor considered was population growth in Butte County, because most of the SVRA’s
visitors come from the surrounding communities. Butte County’s population is projected to
increase by an approximate average annual growth of 2% through 2030 (BCAG 2010). This annual
growth was applied to current visitor levels and was assumed to occur with or without
implementation of the General Plan. Also considered were the OHV improvements and
enhancements envisioned in the General Plan, which could attract additional visitors to the park.
Visitor information for other OHV facilities that provide similar amenities, such as the Prairie City
SVRA in Sacramento County, and local commercial OHV facilities, was used to estimate visitor
increases. Using this combination of factors, a 50% increase in visitor attendance to Clay Pit SVRA
Clay Pit State Vehicular Recreation Area
Draft EIR 3.1-13 February 2012