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<br /> Wastewater Treatment System "� FALL CREEK
<br /> Engineering Report ENGINEERING,INC.
<br /> peaking factor of two for the wet year (35.8 in/yr). This estimated wet year is similar to rainfall
<br /> that occurred in water year 1998, the actual wettest year in this record (32.4 in/yr). FCE then
<br /> %W calculated the monthly runoff volumes from the winery facility for average and high rainfall
<br /> years under current and future facility configurations. The results of these stormwater
<br /> calculations are shown in Table 2.4.
<br /> Table 2.4. Estimated Monthly Winery Facility Stormwater Runoff Volumes
<br /> for Average Year and Wet Year Rainfall Periods
<br /> 04W Current Expansion(gal) 10-Yr Plan(gal)
<br /> Rainfall(inches) (A=1.2 ac, C=0.88) (A=1.3 ac, C=0.88)
<br /> Average High Average High Average High
<br /> January 3.74 7.48 106,926 213,851 114,270 228,540
<br /> February 3.52 7.04 100,636 201,272 107,548 215,097
<br /> March 2.70 5.40 77,254 154,509 82,561 165,122
<br /> April 1.18 2.36 33,773 67,546 36,093 72,186
<br /> May 0.62 1.24 17,765 35,529 18,985 37,970
<br /> June 0.10 0.20 2,797 5,594 2,989 5,978
<br /> July 0.03 0.07 994 1,989 1,063 2,125
<br /> August 0.01 0.02 247 494 264 528
<br /> September 0.26 0.53 7,511 15,023 8,027 16,054
<br /> October 1.12 2.24 32,021 64,041 34,220 68,440
<br /> November 2.01 4.02 57,465 114,931 61,413 122,825
<br /> December 1 2.62 5.241 74,905 1 149,810 1 80,050 1 160,100
<br /> 17.92 35.84 512,294 1,024,588 547,482 1,094,965
<br /> Figures 2.1 and 2.2 show monthly projected wastewater flows under the current expansion and
<br /> 10-year plan. They show that from November through May stormwater runoff is the main
<br /> source of wastewater at the Winery. From June through October the main source of wastewater
<br /> is from process wastewater. With the current expansion production level, stormwater runoff in
<br /> the average rainfall year represents approximately 72% of the total annual wastewater discharged
<br /> to the wetland. In a high rainfall year, stormwater runoff represents approximately 83% of
<br /> annual wastewater flow. With projected wastewater flow rates and facility configuration under
<br /> the 10-yr plan, the wastewater discharged to the wetland would be 53% and 69% in average and
<br /> high rainfall years, respectively.
<br /> i
<br /> Average Rainfall Year(390 Ton Crush) High Rainfall Year(390 Ton Crush)
<br /> low
<br /> 4,500 -__-_ -.__ ,mStormwater ___y. 8.000 -- _ _---..___. ................................ _...;■Stormwater
<br /> - 7,000
<br /> 4,000 -- - _ - ---- -'.O Process W W. 7
<br /> - - ,000 --
<br /> 3,500 -------- -- ----- -- -- - a 6.000 j
<br /> 3,000 - ----------- - -- �'
<br /> 5,000 - ----
<br /> �, a 2.500
<br /> 4,000 -- ---
<br /> a 2.000 _ -- E 3,000
<br /> low � a 1.500 - - -- - ---- -
<br /> e 2,000 - - - - -
<br /> V 1.000 -- U - - - --
<br /> 500 - -- - - _' 1,000
<br /> `' Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
<br /> Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
<br /> Month Month
<br /> Figure 2.1. Jessie's Winery Monthly Combined Flows-Current Expansion
<br /> v
<br /> JESSIE'S GROVE WINERY MAY 2002
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