Cities Index.
Exhibit “E” – Initial Study / Mitigated Negative Declaration No. 2022-39

Visalia City Council
December 18, 2023

Document
Exhibit “E” – Initial Study / Mitigated Negative Declaration No. 2022-39
Meeting
December 18, 2023
Body
Visalia City Council
Pages
36
Original file
100.9 MB
Text extracted from the city's file for reading and search. Open the original on visalia.legistar1.com. That file is the official record.

0.673 0.841 0.826
Totals:

Southbound Westbound
Totals:
8/5/2021
Southbound Westbound Northbound Eastbound

0.865 0.729 0.688 0.750
Northbound
Location ID: 3
North/South: N Country Center St Date:

East/West: Pratt Rd City: Visalia, CA
1 2 3 4 5 6 7 8 9 10 11 12
Lanes: R T L R T L R T L R T L
7:00 0 0 0 0 12 2 8 0 3 1 8 0 30
7:15 0 0 0 0 10 0 1 0 3 0 7 0 19
7:30 0 0 0 0 13 0 0 0 3 5 13 0 29
7:45 0 0 0 0 14 0 1 0 7 2 13 0 32
8:00 0 0 0 0 12 0 0 0 2 1 15 0 26
8:15 0 0 0 0 9 1 1 0 3 2 14 0 27
8:30 0 0 0 0 16 0 0 0 0 2 7 0 22
8:45 0 0 0 0 7 2 0 0 2 0 14 0 22
Total Volume: 0 0 0 0 80 5 10 0 22 12 78 0 207
Approach % 0% 0% 0% 0% 94% 6% 31% 0% 69% 13% 87% 0%
Peak Hr Begin: 7:30
PHV 0 0 0 0 41 1 2 0 14 9 47 0 114
PHF 0.891
1 2 3 4 5 6 7 8 9 10 11 12
Lanes: R T L R T L R T L R T L
16:00 0 0 0 0 10 2 2 0 0 6 21 0 36
16:15 0 0 0 0 15 0 0 0 2 3 17 0 33
16:30 0 0 0 0 9 1 1 0 1 3 20 0 31
16:45 0 0 0 0 6 0 1 0 2 1 12 0 19
17:00 0 0 0 0 16 3 2 0 2 6 20 0 43
17:15 0 0 0 0 10 0 2 0 5 3 20 0 35
17:30 0 0 0 0 14 0 1 0 2 3 20 0 35
17:45 0 0 0 0 10 2 1 0 0 1 18 0 29
Total Volume: 0 0 0 0 79 8 10 0 13 24 127 0 261
Approach % 0% 0% 0% 0% 91% 9% 43% 0% 57% 16% 84% 0%
Peak Hr Begin: 17:00
PHV 0 0 0 0 44 5 6 0 8 12 67 0 142
PHF 0.898 0.826
Eastbound

0.000 0.721 0.583
Totals:

Southbound Westbound
Totals:
8/5/2021
Southbound Westbound Northbound Eastbound

0.000 0.875 0.571 0.933
Northbound
Location ID: 4
North/South: Mooney Blvd Date:

East/West: Pratt Rd City: Visalia, CA
1 2 3 4 5 6 7 8 9 10 11 12
Lanes: R T L R T L R T L R T L
7:00 0 0 0 0 0 0 0 0 15 17 0 0 28
7:15 0 0 0 0 0 0 0 0 9 8 0 0 15
7:30 0 0 0 0 0 0 0 0 14 12 0 0 22
7:45 0 0 0 0 0 0 0 0 14 13 0 0 23
8:00 0 0 0 0 0 0 0 0 12 16 0 0 24
8:15 0 0 0 0 0 0 0 0 8 15 0 0 20
8:30 0 0 0 0 0 0 0 0 15 6 0 0 18
8:45 0 0 0 0 0 0 0 0 12 14 0 0 22
Total Volume: 0 0 0 0 0 0 0 0 85 87 0 0 172
Approach % 0% 0% 0% 0% 0% 0% 0% 0% 100% 100% 0% 0%
Peak Hr Begin: 7:30
PHV 0 0 0 0 0 0 0 0 41 48 0 0 89
PHF 0.927
1 2 3 4 5 6 7 8 9 10 11 12
Lanes: R T L R T L R T L R T L
16:00 0 0 0 0 0 0 0 0 16 23 0 0 34
16:15 0 1 0 0 0 0 0 0 12 18 0 1 28
16:30 0 0 0 0 0 0 0 0 13 18 0 0 27
16:45 0 0 0 0 0 0 0 0 7 13 0 0 17
17:00 0 0 0 0 0 0 0 0 20 22 0 0 36
17:15 0 0 0 0 0 0 0 0 10 21 0 0 27
17:30 0 0 0 0 0 0 0 0 12 22 0 0 29
17:45 0 0 0 0 0 0 0 0 13 20 0 0 28
Total Volume: 0 1 0 0 0 0 0 0 88 136 0 1 226
Approach % 0% 0% 0% 0% 0% 0% 0% 0% 100% 99% 0% 1%
Peak Hr Begin: 17:00
PHV 0 0 0 0 0 0 0 0 47 73 0 0 120
PHF 0.961 0.833
Eastbound

0.000 0.000 0.691
Totals:

Southbound Westbound
Totals:
8/5/2021
Southbound Westbound Northbound Eastbound

0.000 0.000 0.854 0.857
Northbound
Location ID: 5
North/South: N Demaree St Date:

East/West: River Way Dr City: Visalia, CA
1 2 3 4 5 6 7 8 9 10 11 12
Lanes: R T L R T L R T L R T L
7:00 2 49 0 0 0 0 0 54 1 1 0 0 94
7:15 0 38 0 0 0 0 0 83 2 7 0 2 115
7:30 0 59 0 0 0 0 0 77 0 7 0 0 124
7:45 0 61 0 0 0 0 0 69 0 14 0 2 127
8:00 0 44 0 0 0 0 0 52 2 3 0 0 88
8:15 0 41 0 0 0 0 0 46 3 3 0 0 82
8:30 0 48 0 0 0 0 0 48 3 9 0 0 95
8:45 0 43 0 0 0 0 0 35 1 5 0 0 72
Total Volume: 2 333 0 0 0 0 0 403 12 43 0 4 797
Approach % 1% 99% 0% 0% 0% 0% 0% 97% 3% 91% 0% 9%
Peak Hr Begin: 7:00
PHV 2 180 0 0 0 0 0 246 3 25 0 4 460
PHF 0.906
1 2 3 4 5 6 7 8 9 10 11 12
Lanes: R T L R T L R T L R T L
16:00 2 49 0 0 0 0 0 54 1 1 0 0 166
16:15 0 38 0 0 0 0 0 83 2 7 0 2 130
16:30 0 59 0 0 0 0 0 77 0 7 0 0 122
16:45 0 61 0 0 0 0 0 69 0 14 0 2 130
17:00 0 44 0 0 0 0 0 52 2 3 0 0 161
17:15 0 41 0 0 0 0 0 46 3 3 0 0 127
17:30 0 48 0 0 0 0 0 48 3 9 0 0 143
17:45 0 43 0 0 0 0 0 35 1 5 0 0 126
Total Volume: 5 528 0 0 0 0 0 462 59 45 0 6 1105
Approach % 1% 99% 0% 0% 0% 0% 0% 89% 11% 88% 0% 12%
Peak Hr Begin: 16:45
PHV 4 259 0 0 0 0 0 245 30 18 0 5 561
PHF 0.719 0.871
Eastbound

0.843 0.000 0.917
Totals:

Southbound Westbound
Totals:
8/5/2021
Southbound Westbound Northbound Eastbound

0.858 0.000 0.841 0.518
Northbound
Location ID: 6
North/South: N Chinowith St Date:

East/West: River Way Dr City: Visalia, CA
1 2 3 4 5 6 7 8 9 10 11 12
Lanes: R T L R T L R T L R T L
7:00 0 0 0 1 0 0 0 0 0 0 0 0 1
7:15 0 0 1 1 0 0 0 0 0 0 0 0 2
7:30 0 0 1 0 0 0 0 0 0 0 0 0 1
7:45 0 0 3 0 0 0 0 0 0 0 0 0 3
8:00 0 0 0 0 0 0 0 0 0 0 0 0 0
8:15 0 0 0 1 1 0 0 0 0 0 0 0 2
8:30 1 0 1 1 0 0 0 0 0 0 1 0 4
8:45 0 0 0 0 1 0 0 0 0 0 1 0 2
Total Volume: 1 0 6 4 2 0 0 0 0 0 2 0 15
Approach % 14% 0% 86% 67% 33% 0% 0% 0% 0% 0% 100% 0%
Peak Hr Begin: 7:45
PHV 1 0 4 2 1 0 0 0 0 0 1 0 9
PHF 0.563
1 2 3 4 5 6 7 8 9 10 11 12
Lanes: R T L R T L R T L R T L
16:00 0 0 1 3 0 0 0 0 0 0 0 0 4
16:15 0 0 3 1 0 0 0 0 0 0 0 0 4
16:30 0 0 0 1 0 0 0 0 0 0 0 0 1
16:45 0 0 0 2 0 0 0 0 0 0 0 0 2
17:00 0 0 2 0 0 0 0 0 0 0 0 0 2
17:15 0 0 0 2 0 0 0 0 0 0 0 0 2
17:30 0 0 3 1 1 0 0 0 0 0 1 0 6
17:45 0 0 2 1 0 0 0 0 0 0 0 0 3
Total Volume: 0 0 11 11 1 0 0 0 0 0 1 0 24
Approach % 0% 0% 100% 92% 8% 0% 0% 0% 0% 0% 100% 0%
Peak Hr Begin: 17:00
PHV 0 0 7 4 1 0 0 0 0 0 1 0 13
PHF 0.250 0.542
Eastbound

0.583 0.625 0.000
Totals:

Southbound Westbound
Totals:
8/5/2021
Southbound Westbound Northbound Eastbound

0.417 0.375 0.000 0.250
Northbound
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 0 65 8 1 0 4 35 0 3 0 0 0 0 0 0 6 0 8 2 7:15 AM - 7:30 AM 0 0 68 4 0 0 7 59 0 3 0 0 0 0 0 0 9 0 14 1 7:30 AM - 7:45 AM 0 0 76 8 1 0 7 45 0 3 0 0 0 0 0 0 13 0 7 1 7:45 AM - 8:00 AM 0 0 67 12 1 0 7 54 0 2 0 0 0 0 0 0 12 0 22 1 8:00 AM - 8:15 AM 0 0 35 4 0 0 4 55 0 2 0 0 0 0 0 0 13 0 16 0 8:15 AM - 8:30 AM 0 0 53 6 1 0 7 35 0 3 0 0 0 0 0 0 6 0 6 2 8:30 AM - 8:45 AM 0 0 41 7 2 0 1 45 0 0 0 0 0 0 0 0 8 0 4 1 8:45 AM - 9:00 AM 0 0 44 6 2 0 6 53 0 2 0 0 0 0 0 0 3 0 8 0 TOTAL 0 0 386 48 8 0 38 327 0 18 0 0 0 0 0 0 60 0 74 8
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 0 49 24 2 0 14 69 0 1 0 0 0 0 0 0 6 0 4 1 4:15 PM - 4:30 PM 0 0 57 18 1 0 4 64 0 2 0 0 0 0 0 0 7 0 8 0 4:30 PM - 4:45 PM 0 0 60 23 0 0 14 70 0 0 0 0 0 0 0 0 9 0 6 0 4:45 PM - 5:00 PM 0 0 37 21 0 0 18 78 0 3 0 0 0 0 0 0 4 0 3 0 5:00 PM - 5:15 PM 0 0 44 18 1 0 6 71 0 0 0 0 0 0 0 0 4 0 8 0 5:15 PM - 5:30 PM 0 0 55 18 2 0 11 53 0 0 0 0 0 0 0 0 18 0 3 0 5:30 PM - 5:45 PM 0 0 57 25 0 0 7 46 0 0 0 0 0 0 0 0 9 0 9 0 5:45 PM - 6:00 PM 0 0 55 22 1 0 12 59 0 0 0 0 0 0 0 0 4 0 4 0 TOTAL 0 0 357 145 7 0 73 441 0 6 0 0 0 0 0 0 54 0 41 1
PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:15 AM - 8:15 AM 0 0 212 25 2 0 22 183 0 10 0 0 0 0 0 0 40 0 51 3 4:00 PM - 5:00 PM 0 0 176 74 3 0 43 243 0 6 0 0 0 0 0 0 23 0 19 1 PHF Trucks PHF
AM 0.894 2.8% PM 0 243 43 0 0.872
PM 0.915 1.7% AM 0 183 22 0 0.899
PHF ##### #####
AM PM
0 0 51 19
0 0 0 0
0 0 40 23
0 0 0 0
PM AM
PHF

0.784 0.808 PHF

0.823 0 0 212 25 AM

0.868 0 0 176 74 PM
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound

Page 1 of 3 ends

Pratt Rd
Northbound Westbound
Demaree St
Demaree St
Turning Movement Report
Demaree St @ Pratt Rd
Tulare
Wednesday, June 02, 2021 Clear

36.3656
-119.3321
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 0 69 7 1 0 1 42 0 4 0 0 0 0 0 0 23 0 2 0 7:15 AM - 7:30 AM 0 0 64 4 0 0 4 68 0 3 0 0 0 0 0 0 34 0 7 1 7:30 AM - 7:45 AM 0 0 76 18 1 0 1 74 0 3 0 0 0 0 0 0 29 0 6 0 7:45 AM - 8:00 AM 0 0 71 16 2 0 1 70 0 1 0 0 0 0 0 0 25 0 6 0 8:00 AM - 8:15 AM 0 0 42 15 0 0 2 71 0 2 0 0 0 0 0 0 29 0 2 0 8:15 AM - 8:30 AM 0 0 60 13 1 0 0 50 0 1 0 0 0 0 0 0 25 0 2 1 8:30 AM - 8:45 AM 0 0 46 6 2 0 4 57 0 1 0 0 0 0 0 0 26 0 1 0 8:45 AM - 9:00 AM 0 0 47 16 2 0 2 64 0 1 0 0 0 0 0 0 22 0 2 0 TOTAL 0 0 411 82 9 0 15 430 0 16 0 0 0 0 0 0 185 0 25 2 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 1 0 83 24 2 0 3 91 0 3 0 0 0 0 0 0 37 0 0 0 4:15 PM - 4:30 PM 0 0 76 35 1 0 1 71 0 2 0 0 0 0 0 0 15 0 2 0 4:30 PM - 4:45 PM 0 0 81 33 0 0 7 82 0 0 0 0 0 0 0 0 14 0 2 0 4:45 PM - 5:00 PM 0 0 64 37 0 0 2 88 0 3 0 0 0 0 0 0 22 0 1 0 5:00 PM - 5:15 PM 0 0 69 43 0 0 0 83 0 0 0 0 0 0 0 0 25 0 0 0 5:15 PM - 5:30 PM 0 0 83 30 1 0 1 71 0 0 0 0 0 0 0 0 22 0 2 0 5:30 PM - 5:45 PM 0 0 89 33 0 0 2 57 0 0 0 0 0 0 0 0 21 0 2 0 5:45 PM - 6:00 PM 0 0 71 30 1 0 3 71 0 0 0 0 0 0 0 0 21 0 1 0 TOTAL 1 0 533 228 5 0 18 533 0 8 0 0 0 0 0 0 153 0 10 0 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:15 AM - 8:15 AM 0 0 218 46 3 0 8 246 0 9 0 0 0 0 0 0 101 0 18 1 4:00 PM - 5:00 PM 1 0 262 111 3 0 12 288 0 8 0 0 0 0 0 0 76 0 5 0 PHF Trucks PHF
AM 0.910 2.0% PM 0 288 12 0 0.915
PM 0.907 1.5% AM 0 246 8 0 0.977
PHF ##### #####
AM PM
0 0 18 5
0 0 0 0
0 0 101 76
0 0 0 0
PM AM
PHF

0.85 0.633 PHF

0.825 0 0 218 46 AM

0.954 1 0 262 111 PM
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound

Page 1 of 3 ends

Shannon Pkwy
Northbound Westbound
Demaree St
Demaree St
Turning Movement Report
Demaree St @ Shannon Pkwy
Tulare
Wednesday, June 02, 2021 Clear

36.3616
-119.3321
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 1 18 14 13 1 0 3 15 4 1 0 2 29 1 3 0 24 89 2 3 7:15 AM - 7:30 AM 0 8 15 13 1 0 4 23 4 1 0 7 43 2 4 0 27 71 9 1 7:30 AM - 7:45 AM 0 7 22 23 2 0 3 29 8 4 0 13 42 4 7 0 46 85 9 1 7:45 AM - 8:00 AM 0 12 33 33 1 0 3 45 11 0 0 8 42 6 2 0 42 97 16 0 8:00 AM - 8:15 AM 0 11 64 20 2 1 29 43 26 1 0 43 61 14 8 0 30 87 45 3 8:15 AM - 8:30 AM 0 3 34 36 1 0 29 69 24 0 0 14 62 8 6 1 25 76 19 4 8:30 AM - 8:45 AM 0 9 21 18 2 0 2 15 1 0 0 2 46 6 0 0 30 61 6 4 8:45 AM - 9:00 AM 0 6 9 21 2 0 1 13 2 4 0 0 47 9 2 0 27 45 3 0 TOTAL 1 63 182 151 12 1 66 218 71 11 0 77 322 44 29 1 219 529 95 16 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 6 25 42 1 0 19 24 3 0 0 4 124 16 2 1 35 68 13 2 4:15 PM - 4:30 PM 0 7 15 53 0 0 3 13 6 0 0 8 113 16 1 0 37 71 2 2 4:30 PM - 4:45 PM 0 14 22 54 0 0 3 6 7 0 0 1 117 21 1 0 36 67 4 2 4:45 PM - 5:00 PM 2 8 24 38 0 0 3 14 1 0 0 1 113 14 0 0 42 54 2 2 5:00 PM - 5:15 PM 1 11 20 47 1 0 3 7 4 0 0 3 140 19 1 0 34 62 1 1 5:15 PM - 5:30 PM 1 9 25 42 0 0 8 12 2 0 0 3 129 12 1 0 37 65 6 0 5:30 PM - 5:45 PM 1 16 26 37 1 0 1 13 3 0 0 3 105 22 0 2 26 69 8 0 5:45 PM - 6:00 PM 1 20 16 24 0 1 2 7 4 0 0 1 99 35 0 0 36 74 7 1 TOTAL 6 78 151 290 3 1 38 82 28 0 0 23 813 133 6 3 244 459 38 10 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 0 28 131 96 6 1 56 161 60 5 0 67 179 28 20 1 124 298 77 8 4:00 PM - 5:00 PM 2 30 75 160 1 0 25 49 15 0 0 13 404 58 4 1 129 225 19 8 PHF Trucks PHF
AM 0.799 3.0% PM 15 49 25 0 0.556
PM 0.916 1.1% AM 60 161 56 1 0.656
PHF 0.95 0.672
AM PM
0 0 77 19
13 67 298 225
404 179 124 129
58 28 1 1
PM AM
PHF

0.893 0.926 PHF

0.787 0 28 131 96 AM

0.867 2 30 75 160 PM
Turning Movement Report
Riggin Ave @ Akers St
Tulare
Thursday, May 27, 2021 Clear

36.3566
-119.3500

Page 1 of 3 ends

Riggin Ave
Northbound Westbound
Riggin Ave
Akers St
Akers St
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 3 0 1 0 0 0 0 0 0 0 0 44 1 6 0 4 111 0 0 7:15 AM - 7:30 AM 0 6 0 3 0 0 0 0 0 0 0 0 61 3 3 0 4 113 0 2 7:30 AM - 7:45 AM 0 6 0 7 0 0 0 0 0 0 0 0 76 1 7 0 3 147 0 2 7:45 AM - 8:00 AM 0 1 0 3 0 0 0 0 0 0 0 0 83 12 0 0 3 156 0 4 8:00 AM - 8:15 AM 0 7 0 9 0 0 0 0 0 0 0 0 118 3 7 0 9 137 0 6 8:15 AM - 8:30 AM 0 4 0 6 0 0 0 0 0 0 0 0 122 4 7 0 8 114 0 4 8:30 AM - 8:45 AM 0 6 0 7 0 0 0 0 0 0 0 0 69 2 0 0 1 83 0 3 8:45 AM - 9:00 AM 0 2 0 3 0 0 0 0 0 0 0 0 72 0 6 0 2 71 0 0 TOTAL 0 31 0 35 0 0 0 0 0 0 0 0 558 24 31 0 32 807 0 20 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 4 0 8 0 0 0 0 0 0 0 0 184 11 3 0 8 118 0 2 4:15 PM - 4:30 PM 0 2 0 8 0 0 0 0 0 0 0 0 160 7 0 0 4 110 0 2 4:30 PM - 4:45 PM 0 3 0 4 0 0 0 0 0 0 0 0 165 7 2 0 7 110 0 3 4:45 PM - 5:00 PM 0 2 0 7 0 0 0 0 0 0 0 0 153 11 0 0 9 88 0 1 5:00 PM - 5:15 PM 0 1 0 4 0 0 0 0 0 0 0 0 194 4 2 0 2 103 0 1 5:15 PM - 5:30 PM 0 4 0 15 0 0 0 0 0 0 0 0 166 12 1 0 6 107 0 0 5:30 PM - 5:45 PM 0 6 0 8 0 0 0 0 0 0 0 0 150 3 0 0 6 106 0 1 5:45 PM - 6:00 PM 0 6 0 7 0 0 0 0 0 0 0 0 123 14 0 0 6 112 0 0 TOTAL 0 26 0 54 0 0 0 0 0 0 0 0 1121 59 8 0 42 739 0 10 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 0 16 0 22 0 0 0 0 0 0 0 0 344 18 18 0 21 479 0 15 4:00 PM - 5:00 PM 0 11 0 24 0 0 0 0 0 0 0 0 573 30 5 0 25 368 0 8 PHF Trucks PHF
AM 0.918 3.7% PM 0 0 0 0 #####
PM 0.895 1.3% AM 0 0 0 0 #####
PHF 0.897 0.83
AM PM
0 0 0 0
0 0 479 368
573 344 21 25
30 18 0 0
PM AM
PHF

0.906 0.901 PHF

0.679 0 16 0 22 AM

0.795 0 11 0 24 PM
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound

Page 1 of 3 ends

Riggin Ave
Northbound Westbound
Riggin Ave
Linwood St
Turning Movement Report
Riggin Ave @ Linwood St
Tulare
Thursday, May 27, 2021 Clear

36.3565
-119.3410
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 7 66 9 0 0 3 48 26 0 0 8 25 14 3 1 27 72 4 3 7:15 AM - 7:30 AM 0 13 66 14 6 0 7 50 24 1 1 13 38 16 2 3 47 78 8 1 7:30 AM - 7:45 AM 0 13 83 19 6 0 7 85 33 3 0 33 54 20 7 4 42 89 14 3 7:45 AM - 8:00 AM 0 18 76 29 1 0 4 96 25 1 0 24 61 18 0 4 38 108 7 0 8:00 AM - 8:15 AM 0 19 60 26 3 0 9 76 30 3 0 23 78 22 7 4 39 83 9 4 8:15 AM - 8:30 AM 0 15 89 30 3 0 8 62 26 2 0 23 91 15 7 3 56 72 7 4 8:30 AM - 8:45 AM 0 8 47 16 2 0 6 44 16 2 0 21 43 14 0 12 45 53 7 7 8:45 AM - 9:00 AM 0 8 54 15 4 0 4 59 15 1 0 20 50 15 6 7 38 44 2 0 TOTAL 0 86 467 137 23 0 43 451 170 13 1 142 381 115 28 35 288 519 51 21 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 16 101 37 1 0 21 70 21 1 0 46 112 20 1 1 59 83 7 1 4:15 PM - 4:30 PM 0 13 120 37 3 0 13 79 18 2 0 42 103 21 2 19 48 90 8 2 4:30 PM - 4:45 PM 0 15 80 39 2 0 12 79 20 1 0 36 113 19 1 16 71 80 9 2 4:45 PM - 5:00 PM 0 16 95 38 2 0 13 65 15 2 0 43 105 19 0 14 65 69 7 1 5:00 PM - 5:15 PM 0 21 100 58 1 0 12 69 21 0 0 47 124 22 2 15 56 74 2 1 5:15 PM - 5:30 PM 0 15 108 32 2 0 12 82 24 0 0 43 125 24 1 19 65 77 6 1 5:30 PM - 5:45 PM 0 18 114 45 3 0 14 84 19 1 0 25 89 15 0 23 60 81 6 1 5:45 PM - 6:00 PM 0 13 85 32 3 0 16 49 30 0 0 44 84 16 0 14 42 84 12 1 TOTAL 0 109 695 274 17 0 96 500 144 7 0 282 740 134 7 104 403 552 49 10 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 0 55 266 90 12 0 25 276 99 9 0 89 245 64 18 15 151 306 32 11 4:45 PM - 5:45 PM 0 60 361 149 8 0 43 260 68 3 0 137 383 69 3 61 212 260 18 4 PHF Trucks PHF
AM 0.973 2.9% PM 68 260 43 0 0.909
PM 0.955 0.9% AM 99 276 25 0 0.917
PHF 0.882 0.888
AM PM
0 0 32 18
137 89 306 260
383 245 151 212
69 64 15 61
PM AM
PHF

0.92 0.937 PHF

0.886 0 55 266 90 AM

0.925 0 60 361 149 PM
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound

Page 1 of 3 ends

Riggin Ave
Northbound Westbound
Riggin Ave
Demaree St
Demaree St
Turning Movement Report
Riggin Ave @ Demaree St
Tulare
Thursday, May 27, 2021 Clear

36.3565
-119.3320
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 11 14 8 4 0 3 32 11 4 0 1 1 8 3 0 30 6 12 2 7:15 AM - 7:30 AM 0 10 21 17 3 0 1 35 7 4 0 0 0 2 1 0 39 1 11 0 7:30 AM - 7:45 AM 0 11 18 14 6 0 9 55 7 4 0 2 2 10 4 0 29 6 9 0 7:45 AM - 8:00 AM 0 19 23 30 4 0 2 77 11 4 0 2 0 2 3 0 34 10 17 0 8:00 AM - 8:15 AM 0 10 30 22 6 0 8 47 8 6 0 1 3 8 3 0 29 6 13 3 8:15 AM - 8:30 AM 1 15 23 22 3 0 10 28 4 4 0 6 2 6 7 0 21 4 18 2 8:30 AM - 8:45 AM 0 8 26 20 8 0 7 24 7 3 0 2 2 6 1 0 17 3 9 1 8:45 AM - 9:00 AM 0 15 24 9 10 0 9 26 6 6 0 4 0 7 4 0 18 6 13 0 TOTAL 1 90 163 128 40 0 44 295 54 33 0 17 10 43 25 0 195 37 92 8 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 12 52 32 4 0 7 37 6 1 0 13 10 19 6 0 20 2 8 2 4:15 PM - 4:30 PM 0 4 30 21 2 0 8 19 4 3 0 7 9 22 1 0 9 2 10 0 4:30 PM - 4:45 PM 0 6 52 32 1 0 9 35 0 0 0 12 15 37 1 0 11 4 12 0 4:45 PM - 5:00 PM 0 2 34 20 0 0 4 42 2 2 0 9 7 7 2 0 4 0 8 0 5:00 PM - 5:15 PM 0 1 55 30 1 0 12 18 0 0 0 11 12 30 0 0 9 1 7 0 5:15 PM - 5:30 PM 0 3 45 20 2 0 7 23 1 1 0 4 7 2 0 0 10 1 11 0 5:30 PM - 5:45 PM 0 2 53 30 1 0 7 26 1 0 0 10 1 17 0 0 14 0 8 0 5:45 PM - 6:00 PM 0 1 30 28 1 0 7 22 7 2 0 4 1 9 1 0 13 2 7 0 TOTAL 0 29 318 192 12 0 54 202 19 9 0 64 56 129 10 0 82 12 63 2 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 1 50 85 80 17 0 26 188 27 17 0 10 7 23 16 0 102 23 51 5 4:00 PM - 5:00 PM 0 22 152 95 7 0 25 121 11 6 0 37 37 77 9 0 40 8 34 2 PHF Trucks PHF
AM 0.817 8.2% PM 11 121 25 0 0.872
PM 0.804 3.6% AM 27 188 26 0 0.735
PHF 0.64 0.769
AM PM
0 0 51 34
37 10 23 8
37 7 102 40
77 23 0 0
PM AM
PHF

0.8 0.759 PHF

0.831 1 50 85 80 AM

0.773 0 22 152 95 PM
Turning Movement Report
Ferguson Ave @ Shirk Rd
Tulare
Thursday, May 27, 2021 Clear

36.3510
-119.3678

Page 1 of 3 ends

Ferguson Ave
Northbound Westbound
Sunnyview Ave
Shirk Rd
Shirk Rd
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 3 30 9 1 0 8 4 8 2 0 2 19 3 1 0 9 30 4 1 7:15 AM - 7:30 AM 0 2 37 13 0 0 6 0 6 0 0 2 18 2 0 0 9 37 2 1 7:30 AM - 7:45 AM 0 1 44 17 0 0 11 4 10 1 0 3 36 0 2 0 4 44 2 0 7:45 AM - 8:00 AM 0 0 68 13 0 0 13 7 11 0 0 4 23 1 1 0 15 68 8 0 8:00 AM - 8:15 AM 0 2 62 21 1 0 8 3 26 1 0 11 44 0 2 0 9 62 4 0 8:15 AM - 8:30 AM 0 1 53 10 0 0 7 4 17 1 0 11 45 0 2 0 9 53 1 2 8:30 AM - 8:45 AM 0 1 22 8 0 0 6 0 6 0 0 6 28 3 0 0 6 22 4 0 8:45 AM - 9:00 AM 0 0 31 14 2 0 4 2 3 0 0 1 15 0 3 0 9 31 1 0 TOTAL 0 10 315 95 4 0 56 23 78 5 0 37 207 9 11 0 63 315 25 4 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 1 34 18 1 0 7 2 6 1 0 6 59 0 0 0 15 34 13 0 4:15 PM - 4:30 PM 0 0 37 13 0 0 10 2 6 0 0 4 42 1 0 0 8 37 7 0 4:30 PM - 4:45 PM 0 2 34 13 0 0 9 3 2 0 0 7 54 3 0 0 12 34 9 1 4:45 PM - 5:00 PM 0 2 19 6 0 0 3 2 1 0 0 7 29 0 0 0 9 19 13 1 5:00 PM - 5:15 PM 0 0 34 15 0 0 7 7 4 0 0 6 44 1 0 0 13 34 12 0 5:15 PM - 5:30 PM 0 0 30 6 0 0 6 7 4 0 0 7 32 1 1 0 19 30 8 0 5:30 PM - 5:45 PM 0 0 31 13 0 0 7 10 1 0 0 3 39 7 0 0 13 31 10 0 5:45 PM - 6:00 PM 0 1 21 14 0 0 7 6 7 0 0 6 32 0 0 0 12 21 9 0 TOTAL 0 6 218 89 1 0 49 35 28 1 0 40 300 12 1 0 92 218 73 2 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 0 4 206 55 1 0 35 17 58 3 0 27 135 1 7 0 34 206 14 2 4:00 PM - 5:00 PM 0 5 113 45 1 0 26 9 13 1 0 21 167 4 0 0 40 113 38 2 PHF Trucks PHF
AM 0.865 1.6% PM 13 9 26 0 0.75
PM 0.839 0.7% AM 58 17 35 0 0.809
PHF 0.814 0.799
AM PM
0 0 14 38
21 27 206 113
167 135 34 40
4 1 0 0
PM AM
PHF

0.765 0.838 PHF

0.86 0 4 206 55 AM

0.849 0 5 113 45 PM
Turning Movement Report
Ferguson Ave @ Roeben St
Tulare
Thursday, May 27, 2021 Clear

36.3511
-119.3589

Page 1 of 3 ends

Ferguson Ave
Northbound Westbound
Ferguson Ave
Roeben St
Roeben St
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 12 1 1 0 0 7 12 6 0 0 1 15 15 0 0 3 33 3 0 7:15 AM - 7:30 AM 0 20 2 1 1 0 4 12 8 1 1 3 29 16 1 0 3 41 2 0 7:30 AM - 7:45 AM 0 18 11 1 0 0 1 9 18 2 0 3 33 8 2 0 1 58 2 0 7:45 AM - 8:00 AM 0 27 3 15 0 0 11 20 20 0 0 2 46 20 1 0 4 83 4 0 8:00 AM - 8:15 AM 0 39 16 24 1 0 15 37 8 0 0 4 46 32 0 0 12 58 20 0 8:15 AM - 8:30 AM 0 33 16 13 0 0 2 14 7 1 0 15 30 32 3 0 9 54 13 0 8:30 AM - 8:45 AM 0 11 6 2 1 0 1 6 4 0 0 2 24 9 0 0 0 21 3 0 8:45 AM - 9:00 AM 0 14 3 0 0 0 1 9 4 0 0 2 27 9 1 0 3 41 3 0 TOTAL 0 149 51 50 3 0 37 102 65 4 1 30 217 121 8 0 32 334 45 0 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 16 9 3 0 0 9 12 8 0 0 11 58 32 0 0 3 53 9 0 4:15 PM - 4:30 PM 0 13 3 4 0 0 2 14 7 0 0 18 61 20 0 0 7 35 8 0 4:30 PM - 4:45 PM 0 20 2 6 0 0 6 24 4 0 0 14 62 24 1 0 0 44 4 1 4:45 PM - 5:00 PM 0 21 11 0 0 0 4 8 6 0 0 13 48 25 0 0 3 30 4 1 5:00 PM - 5:15 PM 0 13 8 2 0 0 3 15 8 0 0 8 82 26 1 0 6 30 13 0 5:15 PM - 5:30 PM 0 16 9 1 0 0 3 16 2 0 0 15 66 21 0 0 1 32 13 0 5:30 PM - 5:45 PM 0 14 11 4 0 0 8 15 3 0 0 18 53 36 0 0 6 39 4 0 5:45 PM - 6:00 PM 0 11 4 2 0 0 7 19 2 0 0 8 59 24 0 0 9 34 8 0 TOTAL 0 106 50 21 0 0 38 106 36 0 0 89 423 180 2 0 31 255 56 2 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 0 101 40 46 1 0 25 69 45 3 0 22 134 78 6 0 23 218 34 0 5:00 PM - 6:00 PM 0 46 28 9 0 0 19 56 14 0 0 42 224 93 1 0 19 116 33 0 PHF Trucks PHF
AM 0.776 1.2% PM 14 56 19 0 0.927
PM 0.940 0.1% AM 45 69 25 0 0.668
PHF 0.889 0.824
AM PM
0 0 34 33
42 22 218 116
224 134 23 19
93 78 0 0
PM AM
PHF

0.859 0.955 PHF

0.678 0 101 40 46 AM

0.830 0 46 28 9 PM
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound

Page 1 of 3 ends

Ferguson Ave
Northbound Westbound
Ferguson Ave
Linwood St
Linwood St
Turning Movement Report
Ferguson Ave @ Linwood St
Tulare
Thursday, May 27, 2021 Clear

36.3490
-119.3410
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 4 81 18 0 0 3 97 7 2 0 7 8 4 0 0 34 23 1 0 7:15 AM - 7:30 AM 0 7 77 13 4 0 2 118 6 0 0 8 20 12 0 0 47 32 7 0 7:30 AM - 7:45 AM 0 14 99 19 4 0 7 148 12 3 0 7 15 11 1 0 46 43 8 0 7:45 AM - 8:00 AM 0 14 107 24 1 0 8 170 9 0 0 8 33 12 0 0 46 65 3 0 8:00 AM - 8:15 AM 0 16 102 33 3 0 15 129 15 3 0 15 22 41 0 0 43 33 13 0 8:15 AM - 8:30 AM 0 15 107 29 3 0 4 137 13 3 0 9 21 27 2 0 30 29 11 0 8:30 AM - 8:45 AM 0 3 72 18 3 0 2 112 4 7 0 3 14 9 0 0 32 16 3 0 8:45 AM - 9:00 AM 0 9 66 18 4 0 0 107 6 1 0 6 13 9 1 0 18 26 3 0 TOTAL 0 72 615 146 22 0 37 881 62 18 0 55 125 108 4 0 255 230 43 0 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 12 142 37 1 0 6 142 4 2 0 14 39 18 0 0 34 47 3 0 4:15 PM - 4:30 PM 0 15 162 39 3 0 8 123 11 2 0 12 46 7 0 0 27 20 1 0 4:30 PM - 4:45 PM 0 14 141 30 2 0 3 159 6 3 0 14 47 19 1 0 30 36 6 1 4:45 PM - 5:00 PM 0 8 151 38 2 0 6 141 7 2 0 12 36 16 0 0 32 23 8 0 5:00 PM - 5:15 PM 0 18 171 47 1 0 6 140 8 2 0 21 62 12 0 0 25 21 9 0 5:15 PM - 5:30 PM 0 21 170 53 2 0 11 156 7 2 0 15 43 18 0 0 26 16 7 0 5:30 PM - 5:45 PM 0 11 164 43 3 0 8 152 13 1 0 13 27 9 0 0 23 39 6 1 5:45 PM - 6:00 PM 0 14 135 25 2 0 3 106 12 2 0 14 43 9 0 0 27 21 4 0 TOTAL 0 96 1070 270 16 0 44 968 58 16 0 98 298 92 1 0 195 193 39 2 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 0 51 359 90 11 0 30 505 42 9 0 34 78 78 3 0 143 146 30 0 4:45 PM - 5:45 PM 0 49 568 156 8 0 26 510 30 7 0 52 146 47 0 0 92 86 26 1 PHF Trucks PHF
AM 0.918 1.5% PM 30 510 26 0 0.943
PM 0.955 0.9% AM 42 505 30 0 0.89
PHF 0.747 0.709
AM PM
0 0 30 26
52 34 146 86
146 78 143 92
47 78 0 0
PM AM
PHF

0.806 0.864 PHF

0.954 0 51 359 90 AM

0.920 0 49 568 156 PM
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound

Page 1 of 3 ends

Ferguson Ave
Northbound Westbound
Ferguson Ave
Demaree St
Demaree St
Turning Movement Report
Ferguson Ave @ Demaree St
Tulare
Thursday, May 27, 2021 Clear

36.3491
-119.3319
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 12 14 59 15 6 1 57 88 8 2 0 4 31 3 3 0 11 34 11 1 7:15 AM - 7:30 AM 20 24 59 13 0 1 44 105 21 0 0 11 37 9 0 0 25 41 12 3 7:30 AM - 7:45 AM 26 17 77 11 4 1 77 165 37 1 0 10 31 11 1 0 23 51 14 6 7:45 AM - 8:00 AM 14 24 90 32 3 1 81 189 51 1 0 11 47 15 0 1 34 68 26 3 8:00 AM - 8:15 AM 1 33 110 31 4 1 85 152 39 4 0 25 81 17 0 0 29 52 26 4 8:15 AM - 8:30 AM 10 10 124 43 4 1 62 158 15 0 0 17 53 11 0 0 37 46 30 4 8:30 AM - 8:45 AM 14 19 75 28 4 2 31 106 8 2 0 7 40 14 2 1 20 24 13 4 8:45 AM - 9:00 AM 10 23 73 22 2 1 44 105 9 8 0 8 37 8 1 0 19 30 15 2 TOTAL 98 149 607 177 26 9 437 970 170 17 0 84 325 80 7 2 180 314 135 26 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 15 20 185 46 2 4 52 109 13 2 0 17 89 31 1 0 24 34 31 2 4:15 PM - 4:30 PM 22 19 173 48 1 3 34 129 17 0 1 24 58 20 2 0 25 37 40 2 4:30 PM - 4:45 PM 19 14 176 41 2 0 41 121 7 0 0 23 90 19 0 1 23 42 34 2 4:45 PM - 5:00 PM 11 20 165 36 0 3 40 112 12 3 0 23 68 12 0 0 23 22 32 0 5:00 PM - 5:15 PM 22 15 185 37 1 4 41 83 9 0 0 21 99 21 0 0 24 26 46 1 5:15 PM - 5:30 PM 12 20 189 46 0 6 44 90 10 1 0 23 85 12 0 1 30 32 53 1 5:30 PM - 5:45 PM 14 11 190 33 1 4 52 92 4 1 0 30 89 19 0 0 12 42 36 0 5:45 PM - 6:00 PM 14 8 149 26 0 2 42 80 7 1 0 21 91 20 0 0 28 29 40 0 TOTAL 118 115 1283 286 7 25 313 742 71 8 1 165 609 139 3 2 172 240 283 8 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 47 76 365 106 15 4 277 604 129 6 0 57 193 49 1 1 112 197 88 16 4:00 PM - 5:00 PM 61 66 635 156 5 10 151 428 44 5 1 79 278 74 3 1 87 123 124 6 PHF Trucks PHF
AM 0.923 1.6% PM 44 428 151 10 0.953
PM 0.952 0.8% AM 129 604 277 4 0.865
PHF 0.871 0.667
AM PM
1 0 88 124
79 57 197 123
278 193 112 87
74 49 1 1
PM AM
PHF

0.843 0.901 PHF

0.874 47 76 365 106 AM

0.948 61 66 635 156 PM
Turning Movement Report
Goshen Ave @ Akers St
Tulare
Thursday, May 27, 2021 Clear

36.3418
-119.3499

Page 1 of 3 ends

Goshen Ave
Northbound Westbound
Goshen Ave
Akers St
Akers St
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 0 16 1 0 0 0 14 0 0 0 0 0 0 0 0 1 0 0 0 7:15 AM - 7:30 AM 0 0 32 1 0 0 0 18 0 0 0 0 0 0 0 0 0 0 0 0 7:30 AM - 7:45 AM 0 0 15 0 0 0 0 20 0 0 0 0 0 0 0 0 0 0 0 0 7:45 AM - 8:00 AM 1 0 25 0 0 1 0 41 0 0 0 0 0 0 0 0 0 0 0 0 8:00 AM - 8:15 AM 0 0 23 0 3 0 0 37 0 0 0 0 0 0 0 0 0 0 0 0 8:15 AM - 8:30 AM 0 0 13 0 0 0 0 22 0 0 0 0 0 0 0 0 0 0 0 0 8:30 AM - 8:45 AM 0 0 12 0 0 0 0 7 0 0 0 0 0 0 0 0 0 0 0 0 8:45 AM - 9:00 AM 0 0 13 0 1 0 0 6 0 0 0 0 0 0 0 0 0 0 0 0 TOTAL 1 0 128 2 4 1 0 141 0 0 0 0 0 0 0 0 1 0 0 0
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 0 14 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 4:15 PM - 4:30 PM 0 0 19 0 0 0 0 9 0 0 0 0 0 0 0 0 0 0 0 0 4:30 PM - 4:45 PM 0 0 18 0 0 0 0 18 0 0 0 0 0 0 0 0 0 0 0 0 4:45 PM - 5:00 PM 0 0 16 0 0 0 0 24 0 0 0 0 0 0 0 0 0 0 0 0 5:00 PM - 5:15 PM 0 0 32 0 0 0 0 12 0 0 0 0 0 0 0 0 0 0 0 0 5:15 PM - 5:30 PM 0 0 21 0 0 0 0 11 0 0 0 0 0 0 0 0 0 0 0 0 5:30 PM - 5:45 PM 0 0 12 0 0 0 0 13 0 0 0 0 0 0 0 0 0 0 0 0 5:45 PM - 6:00 PM 0 0 19 0 0 0 0 8 0 0 0 0 0 0 0 0 0 0 0 0 TOTAL 0 0 128 0 0 0 0 83 0 0 0 0 0 0 0 0 0 0 0 0
PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:15 AM - 8:15 AM 1 0 82 1 3 1 0 99 0 0 0 0 0 0 0 0 0 0 0 0 4:30 PM - 5:30 PM 0 0 74 0 0 0 0 55 0 0 0 0 0 0 0 0 0 0 0 0 PHF Trucks PHF
AM 0.780 1.6% PM 0 55 0 0 0.655
PM 0.872 0.0% AM 0 99 0 1 0.694
PHF ##### #####
AM PM
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
PM AM
PHF
##### ##### PHF

0.75 1 0 82 1 AM

0.685 0 0 74 0 PM
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound

Page 1 of 3 ends

Shannon Pkwy
Northbound Westbound
Akers St
Akers St
Turning Movement Report
Akers St @ Shannon Pkwy
Tulare
Tuesday, September 14, 2021 Clear

36.3619
-119.3500
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 0 61 3 0 0 3 55 0 0 0 0 0 0 0 0 2 0 1 0 7:15 AM - 7:30 AM 1 0 91 9 4 0 1 62 0 0 0 0 0 0 0 0 2 0 2 0 7:30 AM - 7:45 AM 0 0 96 2 3 0 3 71 0 3 0 0 0 0 0 0 2 0 6 1 7:45 AM - 8:00 AM 2 0 102 7 1 0 6 99 0 3 0 0 0 0 0 0 6 0 2 0 8:00 AM - 8:15 AM 1 0 81 12 3 0 2 71 0 0 0 0 0 0 0 0 3 0 2 0 8:15 AM - 8:30 AM 1 0 99 4 1 0 7 60 0 0 0 0 0 0 0 0 6 0 6 1 8:30 AM - 8:45 AM 1 0 70 7 2 0 1 55 0 0 0 0 0 0 0 0 2 0 1 0 8:45 AM - 9:00 AM 0 0 54 11 4 0 3 60 0 2 0 0 0 0 0 0 6 0 4 0 TOTAL 6 0 565 48 18 0 24 461 0 8 0 0 0 0 0 0 26 0 22 2
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 0 97 13 0 0 7 81 0 1 0 0 0 0 0 0 12 0 4 0 4:15 PM - 4:30 PM 0 0 70 4 1 0 3 100 0 1 0 0 0 0 0 0 4 0 6 0 4:30 PM - 4:45 PM 0 0 87 8 1 0 6 91 0 0 0 0 0 0 0 0 8 0 7 0 4:45 PM - 5:00 PM 0 0 95 6 0 0 11 100 0 0 0 0 0 0 0 0 7 0 8 0 5:00 PM - 5:15 PM 1 0 102 4 0 0 9 108 0 2 0 0 0 0 0 0 6 0 2 0 5:15 PM - 5:30 PM 0 0 106 8 0 0 8 95 0 0 0 0 0 0 0 0 8 0 6 0 5:30 PM - 5:45 PM 2 0 116 7 2 0 7 91 0 0 0 0 0 0 0 0 12 0 4 0 5:45 PM - 6:00 PM 1 0 100 7 0 0 1 83 0 1 0 0 0 0 0 0 9 0 2 0 TOTAL 4 0 668 50 4 0 45 648 0 5 0 0 0 0 0 0 57 0 35 0
PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 4 0 326 22 8 0 16 261 0 6 0 0 0 0 0 0 15 0 14 2 4:45 PM - 5:45 PM 3 0 362 22 2 0 30 341 0 2 0 0 0 0 0 0 28 0 18 0 PHF Trucks PHF
AM 0.852 2.4% PM 0 341 30 0 0.909
PM 0.971 0.5% AM 0 261 16 0 0.769
PHF ##### #####
AM PM
0 0 14 18
0 0 0 0
0 0 15 28
0 0 0 0
PM AM
PHF

0.725 0.821 PHF

0.917 4 0 326 22 AM

0.896 3 0 362 22 PM
Turning Movement Report
Demaree St @ Flagstaff Ave
Tulare
Tuesday, September 14, 2021 Clear

36.3592
-119.3321

Page 1 of 3 ends

Flagstaff Ave
Northbound Westbound
Demaree St
Demaree St
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 15 9 3 0 0 4 7 6 2 0 3 23 14 2 0 3 32 3 2 7:15 AM - 7:30 AM 0 20 8 2 2 0 7 12 8 0 0 4 43 12 0 0 9 46 11 0 7:30 AM - 7:45 AM 0 43 6 12 0 0 8 30 15 1 1 2 32 24 0 0 4 57 8 0 7:45 AM - 8:00 AM 0 33 8 18 1 1 16 33 21 1 0 3 54 20 0 0 13 80 11 1 8:00 AM - 8:15 AM 1 36 20 37 0 0 23 35 8 0 0 8 41 25 2 0 21 74 18 0 8:15 AM - 8:30 AM 1 15 11 12 0 0 2 7 6 0 0 8 47 25 3 0 9 48 11 1 8:30 AM - 8:45 AM 0 11 8 3 1 0 6 8 9 0 0 8 24 14 1 0 2 30 6 0 8:45 AM - 9:00 AM 0 13 4 1 0 0 7 4 3 0 0 8 20 13 1 0 0 35 3 0 TOTAL 2 159 64 76 4 1 64 117 66 4 1 40 244 127 9 0 54 347 60 4 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 21 19 8 0 0 6 12 0 0 0 8 62 25 1 0 6 36 8 0 4:15 PM - 4:30 PM 0 18 7 1 0 0 3 6 6 0 0 9 49 15 0 0 6 34 3 0 4:30 PM - 4:45 PM 0 9 11 6 0 0 2 13 6 0 0 8 62 26 3 0 7 42 6 0 4:45 PM - 5:00 PM 0 9 12 3 1 0 6 9 6 1 0 9 60 18 1 0 6 32 9 1 5:00 PM - 5:15 PM 0 18 6 2 0 0 4 25 6 1 0 9 72 30 0 0 3 37 6 0 5:15 PM - 5:30 PM 0 22 11 3 0 1 3 9 9 0 0 22 59 35 0 0 8 33 8 0 5:30 PM - 5:45 PM 0 24 8 2 0 0 2 12 1 0 0 9 54 24 0 0 8 34 9 0 5:45 PM - 6:00 PM 0 13 9 1 0 0 1 12 7 0 0 11 55 24 0 0 1 37 14 0 TOTAL 0 115 70 24 1 1 25 84 35 2 0 74 410 171 5 0 39 244 55 1 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:30 AM - 8:30 AM 2 109 38 67 1 1 43 90 43 2 1 19 149 82 5 0 41 224 40 2 4:30 PM - 5:30 PM 0 50 33 13 1 1 14 49 23 2 0 42 220 94 4 0 21 123 25 1 PHF Trucks PHF
AM 0.793 1.1% PM 23 49 14 1 0.702
PM 0.917 1.1% AM 43 90 43 1 0.725
PHF 0.89 0.896
AM PM
0 1 40 25
42 19 224 123
220 149 41 21
94 82 0 0
PM AM
PHF

0.786 0.899 PHF

0.667 2 109 38 67 AM

0.774 0 50 33 13 PM
Turning Movement Report
Linwood St @ Ferguson Ave
Tulare
Tuesday, September 14, 2021 Clear

36.3491
-119.3410

Page 1 of 3 ends

Ferguson Ave
Northbound Westbound
Ferguson Ave
Linwood St
Linwood St
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 8 0 7 0 0 0 1 0 1 0 0 7 2 2 0 2 8 0 1 7:15 AM - 7:30 AM 0 8 1 9 0 0 0 0 0 0 0 0 8 1 1 0 16 19 0 2 7:30 AM - 7:45 AM 0 4 0 6 1 0 0 0 0 0 0 0 14 2 1 0 12 23 0 2 7:45 AM - 8:00 AM 0 3 0 8 0 0 0 0 0 0 0 0 9 9 1 0 12 25 0 1 8:00 AM - 8:15 AM 0 6 0 9 2 0 0 0 0 0 0 0 12 6 3 0 16 11 0 1 8:15 AM - 8:30 AM 0 8 0 12 1 0 0 0 0 0 0 0 7 6 2 0 8 11 0 1 8:30 AM - 8:45 AM 0 7 0 4 1 0 0 0 0 0 0 1 8 2 1 0 8 12 0 0 8:45 AM - 9:00 AM 0 6 3 3 0 0 1 0 0 1 0 0 14 4 1 0 1 7 1 1 TOTAL 0 44 4 51 5 0 1 1 0 2 0 1 68 29 12 0 65 99 1 9
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 1 9 0 11 0 0 0 0 0 0 0 0 23 6 1 0 7 7 0 3 4:15 PM - 4:30 PM 1 4 0 12 0 0 0 2 0 0 0 0 15 4 0 0 6 8 1 1 4:30 PM - 4:45 PM 0 4 0 14 0 0 0 0 0 0 0 0 27 1 0 0 12 9 0 0 4:45 PM - 5:00 PM 0 7 0 9 0 0 0 0 0 0 0 0 33 7 1 0 1 4 0 0 5:00 PM - 5:15 PM 0 8 0 19 0 0 0 0 0 0 0 0 13 2 0 0 7 6 0 0 5:15 PM - 5:30 PM 0 6 0 8 0 0 0 0 0 0 0 0 12 8 0 0 6 9 0 0 5:30 PM - 5:45 PM 0 8 0 9 0 0 0 0 0 0 0 0 16 9 0 0 6 4 0 0 5:45 PM - 6:00 PM 0 2 0 6 0 0 0 0 0 0 0 0 24 2 0 0 2 3 0 0 TOTAL 2 43 0 75 0 0 0 2 0 0 0 0 141 35 2 0 40 45 1 4
PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:15 AM - 8:15 AM 0 19 1 28 3 0 0 0 0 0 0 0 37 16 6 0 48 67 0 6 4:00 PM - 5:00 PM 2 22 0 39 0 0 0 2 0 0 0 0 85 16 2 0 22 25 1 4 PHF Trucks PHF
AM 0.931 6.9% PM 0 2 0 0 0.25
PM 0.907 2.8% AM 0 0 0 0 #####
PHF 0.743 0.828
AM PM
0 0 0 1
0 0 67 25
85 37 48 22
16 16 0 0
PM AM
PHF

0.898 0.667 PHF

0.75 0 19 1 28 AM

0.875 2 22 0 39 PM
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound

Page 1 of 3 ends

Ave 320
Northbound Westbound
Ave 320
Akers St
Akers St
Turning Movement Report
Ave 320 @ Akers St
Tulare
Wednesday, June 02, 2021 Clear

36.3710
-119.3500
Metro Traffic Data Inc.
310 N. Irwin Street - Suite 20
Hanford, CA 93230 Prepared For:

Ruettgers & Schuler Civil Engineers
800-975-6938 Phone/Fax 1800 30th St, Ste 260
www.metrotrafficdata.com Bakersfield, CA 93301

LOCATION LATITUDE

COUNTY LONGITUDE

COLLECTION DATE WEATHER
Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:00 AM - 7:15 AM 0 12 60 0 2 0 0 32 6 2 0 8 0 8 2 0 1 0 0 0 7:15 AM - 7:30 AM 0 15 65 1 2 0 0 55 19 2 0 9 0 8 1 0 1 0 0 0 7:30 AM - 7:45 AM 0 13 67 0 3 0 0 44 21 2 0 8 0 12 1 0 0 0 0 0 7:45 AM - 8:00 AM 0 18 72 0 2 0 0 47 20 3 0 9 0 11 1 0 1 0 0 0 8:00 AM - 8:15 AM 0 12 38 0 0 0 0 46 20 3 0 9 0 12 3 0 0 0 0 0 8:15 AM - 8:30 AM 0 11 46 0 3 0 1 38 8 2 0 15 0 6 2 0 1 0 0 0 8:30 AM - 8:45 AM 0 9 36 0 2 0 0 42 8 3 0 7 0 6 0 0 0 0 1 0 8:45 AM - 9:00 AM 0 7 42 0 3 0 0 43 4 0 0 6 0 11 1 0 0 0 0 0 TOTAL 0 82 369 1 17 0 1 299 91 17 0 62 0 62 11 0 4 0 1 0 Time U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 4:00 PM - 4:15 PM 0 4 46 0 1 0 1 61 6 2 0 11 0 23 1 0 0 1 0 1 4:15 PM - 4:30 PM 0 9 56 0 1 0 0 56 6 3 0 12 0 16 0 0 0 0 0 0 4:30 PM - 4:45 PM 0 9 57 0 0 0 0 55 11 1 0 16 0 22 0 0 0 0 0 0 4:45 PM - 5:00 PM 0 3 37 0 0 0 0 58 2 2 0 9 0 38 1 0 0 0 0 0 5:00 PM - 5:15 PM 0 6 45 0 1 0 0 59 7 1 0 13 0 13 0 0 1 0 0 0 5:15 PM - 5:30 PM 0 7 47 0 1 0 0 47 8 1 0 13 0 13 0 0 0 0 0 0 5:30 PM - 5:45 PM 0 4 61 0 0 0 0 39 4 0 0 12 0 13 0 0 0 0 0 0 5:45 PM - 6:00 PM 0 6 50 1 1 0 0 49 1 0 0 4 1 24 0 0 0 0 0 0 TOTAL 0 43 346 1 5 0 1 367 39 10 0 77 1 140 2 0 1 1 0 1 PEAK HOUR U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks U-Turn Left Thru Right Trucks 7:15 AM - 8:15 AM 0 49 210 1 7 0 0 166 68 10 0 31 0 36 6 0 2 0 0 0 4:00 PM - 5:00 PM 0 23 169 0 2 0 1 198 21 8 0 41 0 86 2 0 0 1 0 1 PHF Trucks PHF
AM 0.914 4.1% PM 21 198 1 0 0.932
PM 0.925 2.4% AM 68 166 0 0 0.929
PHF 0.774 0.931
AM PM
0 0 0 0
41 31 0 1
0 0 2 0
86 36 0 0
PM AM
PHF

0.5 0.25 PHF

0.833 0 49 210 1 AM

0.842 0 23 169 0 PM
Southbound
Southbound Eastbound
Northbound Eastbound Westbound
Northbound Southbound Eastbound Westbound

Page 1 of 3 ends

Ave 320
Northbound Westbound
Ave 320
Demaree St
Demaree St
Turning Movement Report
Ave 320 @ Demaree St
Tulare
Wednesday, June 02, 2021 Clear

36.3710
-119.3322
Appendix F
Sewer Calculations
July 25, 2023 – Revision 1
City of Visalia, Community Development Department
Paul Bernal, Director
315 E. Acequia Ave.

Visalia, CA 93291
Re: Crandell Subdivision – Biochemical Oxygen Demand and Total Suspended Solids Calculations Mr. Bernal,
We have prepared the calculations below using the best available standards and practices that were able to find. Our Calculations reference a report prepared by Provost and Prichard titled Local Discharge Limits Development, that was prepared for the City of Visalia in March 2012, see Appendix A. We have also utilized the City of Visalia’s Sewer Master Plan, December 2005, to calculate an assumed volume of effluent for the proposed project. See below for the equation that will be utilized to calculate the assumed BOD and TSS that will be generated by the proposed project.

The Crandell Subdivision is a new project being proposed by Wathen Castanos Homes. The project is Located on Demaree Street, North of Riverway Drive. The project is proposing to develop 17.4 Gross Acres of Low Density Residential, 25.4 Gross Acres of Medium Density Residential, and 7.6 Gross Acres of High Density Residential. Using table 3.4 from the City of Visalia’s Sewer Master Plan, the expected flow rates can be calculated using the Adjusted Flow Coefficients that have been provided.

Land Use Acreage Adjusted Flow Coefficient Expected Flow (GPD) Low Density 17.4 800 13,920
Medium Density 25.4 1300 33,020
High Density 7.6 2000 15,200
Total Expected Flow: 62,140 GPD
Utilizing the equation and coefficients previously provided, we can calculate BOD as Follows:

𝐴𝐻𝐿𝑤𝑑𝑟 =
(8.34)(𝐶𝑤𝑑𝑟)(𝑄𝑤𝑤𝑡𝑓)
(1 − 𝑅𝑤𝑤𝑡𝑓)
Where:

𝐶𝑤𝑑𝑟 = 30
𝑄𝑤𝑤𝑡𝑓 = .062 𝑀𝐺𝐷
𝑅𝑤𝑤𝑡𝑓 = .9881
𝑩𝑶𝑫 = 𝟏𝟑𝟎𝟑. 𝟓𝟔 𝑳𝒃/𝑫𝒂𝒚
Utilizing the equation and coefficients previously provided, we can calculate TSS as Follows 𝐴𝐻𝐿𝑤𝑑𝑟 =
(8.34)(𝐶𝑤𝑑𝑟)(𝑄𝑤𝑤𝑡𝑓)
(1 − 𝑅𝑤𝑤𝑡𝑓)
Where:

𝐶𝑤𝑑𝑟 = 30
𝑄𝑤𝑤𝑡𝑓 = .062 𝑀𝐺𝐷
𝑅𝑤𝑤𝑡𝑓 = .9865
𝑻𝑺𝑺 = 𝟏𝟏𝟒𝟗. 𝟎𝟕 𝑳𝒃/𝑫𝒂𝒚
Please review the calculations provided and if there are any additional questions or information needed, please feel free to contact me at (559)802-3052.

Steven J. Macias, PE
Civil Engineer
Appendix A
Local Discharge Limits Development
Visalia, California
DRAFT
March 16, 2011
Prepared for:

City of Visalia
Prepared by:

Provost & Pritchard Consulting Group
Clovis, California
COPYRIGHT 2011 by PROVOST & PRITCHARD CONSULTING GROUP

ALL RIGHTS RESERVED
Provost & Pritchard Consulting Group expressly reserves its common law copyright and other applicable property rights to this document. This document is not to be reproduced, changed, or copied in any form or manner whatsoever, nor are they to be assigned to a third party without first obtaining the written permission and consent of Provost & Pritchard Consulting Group In the event of unauthorized reuse of the information contained herein by a third party, the third party shall hold the firm of Provost & Pritchard Consulting Group harmless, and shall bear the cost of Provost & Pritchard Consulting Group's legal fees associated with defending and enforcing these rights.

Local Discharge Limits Development City of Visalia
i
H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

TABLE OF CONTENTS
EXECUTIVE SUMMARY ................................................................................................. 1 1 INTRODUCTION ...................................................................................................... 1

1.1 WWTF Information ............................................................................................ 2 2 Pollutants of Concern ............................................................................................... 4

2.1 EPA POCs ........................................................................................................ 4

2.2 Existing Local Limits ......................................................................................... 5

2.3 Waste Discharge Requirement POCs ............................................................... 5

2.4 Other Reasons for POCs .................................................................................. 6

2.4.1 Water Quality Criteria ................................................................................. 6

2.4.2 Biosolids Land Application Criteria ............................................................ 6

2.4.3 Interference and Inhibition Criteria ............................................................. 7

2.4.4 Protection of Treatment Works, Collection System, and Workers ............. 7

2.5 Summary of Controlling Limits .......................................................................... 8

2.6 Evaluation of Existing Data ............................................................................... 9

2.7 Sampling Plan ................................................................................................. 11 3 Maximum Allowable Headworks Loadings ............................................................. 14

3.1 WWTF Removal Efficiencies ........................................................................... 14

3.2 Discharge Permit and Water Quality AHLs ..................................................... 16

3.3 Biosolids Disposal Based AHLs ...................................................................... 19

3.4 Inhibition Based AHLs ..................................................................................... 20

3.5 POC Maximum Allowable Headworks Loadings ............................................. 23 4 Designating Local Limits ........................................................................................ 25

4.1 Residential and Background Loadings ............................................................ 26

4.2 Septage Loadings ........................................................................................... 26

4.3 Maximum Allowable Industrial Loadings ......................................................... 27

4.3.1 Safety Factor and Growth Allowance ....................................................... 27

4.4 Local Limits Allocations ................................................................................... 27

4.4.1 Uniform Allocation .................................................................................... 27

Local Discharge Limits Development City of Visalia
ii
H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

4.4.2 IU Specific Allocation ............................................................................... 28

4.4.3 The Mass Proportion Allocation ............................................................... 28

4.5 Uniform Allocation of Local Limits ................................................................... 29

4.6 IU Specific Allocation of Local Limits .............................................................. 31

4.7 Comparison of Proposed and Existing Limits .................................................. 32

4.8 Protection of the Treatment Works, Collection System, and Workers ............. 33

4.8.1 Fume Toxicity .......................................................................................... 33

4.8.2 Oil and Grease ......................................................................................... 34

4.9 Public Participation ......................................................................................... 35

4.10 Implementation ............................................................................................... 35 5 Bibliography/References ........................................................................................ 36 APPENDIX A – WWTF Sampling Data
APPENDIX B – Bis (2-ethylhexyl) Phthalate Sampling Data APPENDIX C – WWTF Biosolids Data
APPENDIX D – Residential Background Sampling Data
APPENDIX E – Septage Hauler Sampling Data
APPENDIX F – Local Limits Calculations (Uniform Allocation) APPENDIX G – SIU Sampling Data
APPENDIX H – Local Limits Calculations (IU Specific Allocation)

Local Discharge Limits Development City of Visalia
iii
H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc LIST OF TABLES Page
Table ES-1: Local Limits Summary ................................................................................ 1 Table 1-1: Current SIUs ................................................................................................. 1 Table 2-1: EPA POCs .................................................................................................... 4 Table 2-2: Existing Local Limits POCs ........................................................................... 5 Table 2-3: WDR POCs ................................................................................................... 5 Table 2-4: Summary of Controlling Limits ...................................................................... 8 Table 2-5: Pollutants of Concern .................................................................................. 10 Table 2-6: Sampling Plan Information .......................................................................... 12 Table 3-1: Summary of WWTF Removal Efficiencies ................................................... 14 Table 3-2: WDR Based AHLs ....................................................................................... 16 Table 3-3: Water Quality (Chronic) Based AHLs .......................................................... 17 Table 3-4: Water Quality (Agricultural Water Supply) Based AHLs .............................. 18 Table 3-5: Summary of Water Quality Based AHLs ..................................................... 18 Table 3-6: Summary of Biosolids Disposal Based AHLs .............................................. 19 Table 3-7: Activated Sludge Inhibition Based AHLs ..................................................... 20 Table 3-8: Trickling Filter Inhibition Based AHLs .......................................................... 21 Table 3-9: Anaerobic Digester Inhibition (Conservative Pollutants) Based AHLs ......... 22 Table 3-10: Anaerobic Digester Inhibition (Non-Conservative Pollutants) Based AHLs22 Table 3-11: Summary Inhibition Based AHLs ............................................................... 23 Table 3-12: Maximum Allowable Headworks Loadings ................................................ 24 Table 4-1: Comparison of MAHLs with Average Headworks Loadings ........................ 25 Table 4-2: Uniform Allocation of Local Limits ............................................................... 30 Table 4-3: IU Specific Allocation of Local Limits ........................................................... 31 Table 4-4: Comparison of Existing and Proposed Local Limits .................................... 32 Table 4-5: Fume Toxicity Discharge Screening Levels ................................................ 34

Local Discharge Limits Development City of Visalia
iv
H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

ABBREVIATIONS
ACGIH ................................ American Conference of Governmental Industrial Hygienists AHL ................................................................................... Allowable Headworks Loading BOD ................................................................................... Biochemical Oxygen Demand CFR ...................................................................................... Code of Federal Regulations CTR ................................................................................................ California Toxics Rule EPA ........................................................ United States Environmental Protection Agency FOG .............................................................................................. Fats, Oils, and Grease GPD ........................................................................................................ Gallons Per Day IPP ................................................................................. Industrial Pretreatment Program IU................................................................................................................ Industrial User MAHL ................................................................ Maximum Allowable Headworks Loading MAIL ..................................................................... Maximum Allowable Industrial Loading MGD ............................................................................................. Million Gallons per Day NIOSH ............................................ National Institute for Occupational Safety and Health OSHA ...................................................... Occupational Safety and Health Administration POC .................................................................................................. Pollutant of Concern PPB .......................................................................................................... Parts Per Billion RWQCB ................................................................ Regional Water Quality Control Board SIU ............................................................................................ Significant Industrial User STEL ....................................................................................... Short Term Exposure Limit TSS ............................................................................................. Total Suspended Solids TWA-TLV ............................................. Threshold Limit Value – Time Weighted Average WDR ................................................................................ Waste Discharge Requirements WQ .............................................................................................................. Water Quality WQS ............................................................................................. Water Quality Standard WWTF ............................................................................... Wastewater Treatment Facility * .................................................................................................................... Multiplication

Local Discharge Limits Development City of Visalia
Page ES-1
H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

EXECUTIVE SUMMARY
The City of Visalia has an approved Industrial Pretreatment Program. As such, the City is required to maintain and enforce local limits on the significant industrial users that discharge to the City’s wastewater treatment facility. The existing local limits were developed in 1992. The Regional Water Quality Control Board is requiring the City to reevaluate their local limits.

A list of potential pollutants of concern was developed based on available sampling and treatment facility data. A sampling plan was developed and implemented to collect additional data necessary to perform the local limits evaluation. Using the information collected, the local limits were evaluated. The results of this evaluation are summarized in Table ES-1.

Table ES-1: Local Limits Summary
Pollutant Existing Local
Limit
Calculated Local
Limit
Allocation
Method
Proposed Local
Limit
Arsenic 0.05 mg/L 0.05 mg/L Uniform 0.05 mg/L
Boron 1.60 mg/L Not needed None
Cadmium 0.02 mg/L 0.08 mg/L IU Specific 0.02 mg/L
Chromium 3.44 mg/L 5.59 mg/L Uniform 3.44 mg/L
Copper 1.97 mg/L 2.14 mg/L IU Specific 1.97 mg/L
Cyanide 0.16 mg/L 36.97 mg/L IU Specific 0.16 mg/L
Lead 0.30 mg/L 0.48 mg/L IU Specific 0.30 mg/L
Mercury 0.02 mg/L 0.04 mg/L IU Specific 0.02 mg/L
Nickel 2.86 mg/L 5.53 mg/L IU Specific 2.86 mg/L
Silver 0.76 mg/L 12.40 mg/L IU Specific 0.76 mg/L
Zinc 0.64 mg/L 9.12 mg/L IU Specific 0.64 mg/L
Pentachlorophenol 0.15 mg/L Not needed None
Oil & Grease 200 mg/L 609 mg/L Uniform 200 mg/L
BOD5 18,161 lb/day 89,538 lb/day1 Not applicable 18,161 lb/day TSS 41,633 lb/day 41,633 lb/day1 Not applicable 41,633 lb/day 1 Plant design capacity
City of Visalia
SECTION ONE Local Discharge Limits Development

Page 1 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc 1 INTRODUCTION
The City of Visalia operates a wastewater treatment facility (WWTF) that collects the municipal wastewater generated from the City of Visalia and the Goshen Community Services District. The WWTF treats typical domestic wastes as well as waste generated from commercial and industrial users. Several of the industrial users served by the WWTF meet the definition of a Significant Industrial Users (SIUs) as defined by the United States Environmental Protection Agency (EPA) in 40 CFR 403.3. SIUs are defined as:
 Industries subject to Categorical Pretreatment Standards under 40 CFR 403.6 and 40 CFR chapter I, subchapter N;
 Any industry discharging an average of 25,000 gallons per day (gpd) or more of process wastewater;
 Any industry that contributes a waste stream that makes up 5 percent or more of the average dry weather hydraulic or organic capacity of the WWTF; or  Any industry designated by the Control Authority to have a reasonable potential to adversely affect the WWTF’s operation.

Table 1-1 lists the current SIUs and the reason they are considered SIUs.

Table 1-1: Current SIUs
SIU Name SIU Reason SIU Name SIU Reason
Advanced Food
Products
Discharge volume Mission Uniform Discharge volume
Basic Chemical
Solutions
Categorical – 40
CFR 442
Pregis Innovative
Packaging
Potential to
impact WWTF
California Dairies Discharge volume Provisions Food Discharge volume ATC Plastics
(previously Heller
Performance Polymers)
Potential to impact
WWTF
Visalia Custom
Chrome
Categorical – 40
CFR 433
JM Eagle Potential to impact
WWTF
Voltage
Multipliers Inc.

Categorical – 40
CFR 469
Josten’s Print. And
Pub.

Potential to impact
WWTF
Western Milling Potential to
impact WWTF
Kawneer Company Categorical – 40
CFR 433

City of Visalia
SECTION ONE Local Discharge Limits Development

Page 2 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Due to the fact that there are SIUs discharging to the WWTF, the City of Visalia is required to have an approved Industrial Pretreatment Program (IPP). The City’s IPP was approved by the Regional Water Quality Control Board (RWQCB) on May 5, 1983.

Part of the IPP requirements is the development and implementation of local limits.

Local limits are designed to protect the operations of the WWTF and to ensure that its discharges, whether liquid, solid, or air, comply with State and Federal requirements.

The EPA published the Local Limits Development Guidance document in July 2004.

This document outlines the procedures to develop local limits. In developing local limits the following factors may need to be considered:
 the WWTF’s efficiency in treating and removing pollutants;  the WWTF’s history of complying with the Waste Discharge Requirements;  sludge disposal methods; and
 worker health and safety concerns.

The current local limits were developed in 1992. The purpose of this project is to reevaluate those local limits and investigate the need for stricter or additional local limits.

1.1 WWTF Information
The WWTF treats sewage from the City of Visalia and the community of Goshen. The combined population is approximately 125,000 with a service area of 30 square miles.

The WWTF has a design capacity of 22 million gallons per day (MGD). The average flow for the period of January 2007 to August 2010 was 12.18 MGD, with a maximum one day flow of 14.79 MGD.

Sewage from the main trunklines enters two wet wells prior to entering the headworks of the WWTF. The headworks consists of bar screens. From the headworks, the flow goes to a set of four primary sedimentation basins. From the primary basins, the wastewater is sent to one of four plastic media filled trickling filters. From the trickling filters the water is sent to the aeration basins. The aeration basins precede the secondary sedimentation basins. After the sedimentation basins, the water is chlorinated prior to discharge. The WWTF has the ability to discharge to Mill Creek, agricultural lands, and to onsite percolation ponds. A majority of the flow is discharged to Mill Creek, with the onsite percolation ponds being the discharge point when Mill Creek is not used.

Sludge collected from the primary and secondary treatment processes is thickened in a pair of gravity belt thickeners. After thickening, the sludge is fed to one of six anaerobic digesters. After digestion, liquid from the digesters is discharged to one of two sludge pits for settling of solids. Supernatant from the sludge pits is pumped back to the headworks. The solids from the digesters are pumped to thirty unlined sludge drying City of Visalia
SECTION ONE Local Discharge Limits Development

Page 3 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc beds. After 60 to 90 days, the sludge is transferred to an onsite stockpile area. Once per year the stockpiled sludge is land applied to farmland in Merced County.

There are several streams from within the plant that are sent back to the wet wells prior to the headworks for treatment. These recycle streams are gravity thickener filtrate, secondary clarifier scum, supernatant from the sludge pits, decant from the sludge drying beds, and septage waste and chemical toilet waste. The samples obtained for the plant influent include these flows.

The WWTF accepts septage from licensed haulers. The waste from the septage haulers is discharged at a point prior to the headworks to assure treatment by the entire WWTF process. The WWTF accepts approximately 11,599 gallons per day of septage from haulers.

The processes employed in the treatment process will affect certain pollutant local limits due to inhibition levels that can disrupt the treatment process. Additionally, the ability of the WWTF to remove pollutants will affect the local limits. The interference and inhibition values are detailed in Section 2.4.3. The WWTF removal efficiencies are detailed in Section 3.1.
2 POLLUTANTS OF CONCERN
City of Visalia
SECTION TWO Local Discharge Limits Development

Page 4 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Pollutants of Concern (POCs) are those pollutants that need to be controlled to protect the WWTF, its workers, and the disposal of the treated wastewater effluent and biosolids. POCs are pollutants that may cause pass through or interference at the WWTF, cause problems in the collection system, or cause problems with the WWTF’s ability to dispose of the generated biosolids.

The following sections discuss the various reasons a pollutant may be included in the list of POCs. There may be numerous reasons to consider a pollutant a POC. The fact that a pollutant is a POC does not mean that a local limit must be developed for it.

Whether a local limit is needed for a POC is discussed in Section 4. If a pollutant is determined to be a POC, data must be collected for it and a detailed evaluation of the POC must be performed.

2.1 EPA POCs
The EPA has established 15 pollutants that are often found in treatment plant effluent and biosolids. The EPA considers these 15 pollutants to be POCs and need to be evaluated as part of any local limits evaluation. These pollutants are listed in Table 2-1.

Table 2-1: EPA POCs
EPA POCs
Arsenic Cadmium
Chromium Copper
Cyanide Lead
Mercury Nickel
Silver Zinc
Molybdenum Selenium
BOD5 Total Suspended
Solids
Ammonia

2.2 Existing Local Limits
The City of Visalia has established local limits for several pollutants. These pollutants are also considered POCs. Table 2-2 lists the pollutants that the City of Visalia currently regulates through a local limit.

Table 2-2: Existing Local Limits POCs
Local Limits POCs
Arsenic Boron
City of Visalia
SECTION TWO Local Discharge Limits Development

Page 5 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Cadmium Chromium
Copper Cyanide
Lead Mercury
Nickel Silver
Zinc Pentachlorophenol
Oil & Grease

2.3 Waste Discharge Requirement POCs
On September 21, 2006, the RWQCB issued Waste Discharge Requirements (WDR) for the City of Visalia WWTF. The WDR contains pollutant limitations that the WWTF must comply with on the discharge to Mill Creek, the Use Area (agricultural lands), or to the onsite disposal ponds. The pollutants that are regulated on the effluent are considered POCs. Table 2-3 lists the pollutants that have limitations listed in the WDR.

Table 2-3: WDR POCs
WDR POCs
BOD5 TSS
Oil & Grease Chlorides
Lead Ammonia

2.4 Other Reasons for POCs
There are several other reasons that a pollutant may be included on the POC list according to the EPA Guidance Manual, including: water quality criteria, biosolid land application restrictions, and treatment plant inhibitions. There are numerous pollutants that are listed under these criteria. However, to be considered a POC at least one of the following conditions must be met:
 The maximum pollutant concentration in the plant effluent is more than one-half the allowable effluent concentration required to meet a water quality criteria limit;  The maximum pollutant concentration in the sludge is more than one-half the applicable biosolids residual disposal limit;
 The maximum pollutant concentration in a plant influent grab sample is more than one-half the inhibition threshold; or
 The maximum pollutant concentration in a plant influent grab composite sample is more than one-fourth the inhibition threshold.

2.4.1 Water Quality Criteria
City of Visalia
SECTION TWO Local Discharge Limits Development

Page 6 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc In the WDR for the WWTF, the RWQCB stated that Mill Creek’s beneficial uses are warm freshwater habitat, water contact recreation, and human health protection (consumption of aquatic organisms only). There is normally no flow in Mill Creek upstream of the WWTF, so the discharge from the WWTF constitutes the flow in Mill Creek. Therefore, there is no dilution of the WWTF effluent in Mill Creek. There are numerous constituents that have limitations based on the beneficial uses in Mill Creek.

Additionally, the State of California has limitations for water used for agricultural uses.

There are numerous constituents that have limitations based on the potential agricultural use of the treated effluent.

For both the beneficial and agricultural use protection, only pollutants in concentrations that are greater than 50% of the water quality standard are considered POCs.

2.4.2 Biosolids Land Application Criteria
The City of Visalia disposes of biosolids by land application. The WWTF must prohibit industrial users from discharging pollutants that could cause a violation of applicable sludge disposal regulations. The national sludge standards are contained in 40 CFR 503. These limitations are based on human health and environmental risks and include numerical pollutant limits, operational standards, management practices, and requirements for sampling, record keeping, and reporting. The State of California has adopted the federal standards in 40 CFR 503. Additionally, the State of California has land application standards set forth in Title 22. The pollutants contained in the 503 and Title 22 regulations are considered for evaluation as a POC. In order to be considered a POC, the maximum pollutant concentration in the sludge must be more than one-half the applicable biosolids residual disposal limit.

2.4.3 Interference and Inhibition Criteria
The pretreatment regulations set forth by the EPA in 40 CFR 403.5(a) state that there must be prohibitions against the discharge of pollutants from an industrial user that may cause interference at the WWTF. Interference, as defined by the EPA, means a discharge that inhibits or disrupts a treatment plant and causes a violation of the WWTF’s WDR or biosolids sludge requirements. The EPA recommends that pollutants be considered POCs if they have caused interference in the past. Based on the City of Visalia WWTF historical data, there have been no pollutants that have caused interference at the plant in the past.

There are certain pollutants that may not cause an effluent discharge or biosolids disposal violation but that may cause disruptions to the WWTF operations. The EPA Local Limits Development Guidance document contains a list of pollutants and inhibition concentrations for various treatment plant processes. The pollutants that have inhibition concentrations are considered POCs if the following criteria have been met:
 The maximum pollutant concentration in a plant influent grab sample is more than one-half the inhibition threshold; or
City of Visalia
SECTION TWO Local Discharge Limits Development

Page 7 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc  The maximum pollutant concentration in a plant influent grab composite sample is more than one-fourth the inhibition threshold.

2.4.4 Protection of Treatment Works, Collection System, and Workers Explosive and flammable pollutants can threaten the integrity of the collection system and the health and safety of the WWTF workers. Under the right conditions, the accumulation of such pollutants can produce explosions or fires. Local limits may be needed if these pollutants are expected to be discharged from industrial users.

The fume toxicity levels of certain pollutants indicate the likelihood that a WWTF worker will suffer adverse health effects when the level is approached or exceeded. Volatile organic compound vapors are the major concern because they can be toxic and carcinogenic, and may produce chronic health affects after various periods of exposure.

The EPA Local Limits Development Guidance document list the concentrations for the various exposure levels set forth by the National Institute for Occupational Safety and Health (NIOSH), Occupational Health and Safety Administration (OSHA), and American Conference of Governmental Industrial Hygienists (ACGIH). Local limits may be needed if these pollutants are expected to be discharged from industrial users at concentrations that may pose a risk to WWTF workers.

2.5 Summary of Controlling Limits
Based on the criteria discussed in Section 2, several potential pollutants of concern and their associated controlling limit and inhibition limit were tabulated and summarized in Table 2-4.

Table 2-4: Summary of Controlling Limits
Primary Compound
Name
Controlling
Limit (ppb)
Source Inhibition
Criteria (ppb)
Treatment
Process
Ammonia 3,500
Fresh Water Aquatic
4‐day average
(USEPA) 480,000(4) Activated Sludge
Arsenic 100 Agricultural WQ Limit 100(1,2,3) Activated Sludge Boron 700 Agricultural WQ Limit
Cadmium 0.27
Fresh Water Aquatic
4‐day average
(USEPA) 1,000(2,3) Activated Sludge
Chloride 106,000 Agricultural WQ Limit
Chromium VI 1,000(2,3) Activated Sludge
City of Visalia
SECTION TWO Local Discharge Limits Development

Page 8 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Copper 9.3
Fresh Water Aquatic
4‐day average (CTR) 1,000(1,2,3) Activated Sludge
Cyanide (total) 5.2
Fresh Water Aquatic
4‐day average (CTR) 100(1,2,3) Activated Sludge
Lead 3.2
Fresh Water Aquatic
4‐day average (CTR) 1,000(3) Activated Sludge
Mercury 100(2,3) Activated Sludge
Molybdenum 10 Agricultural WQ Limit
Nickel 52
Fresh Water Aquatic
4‐day average (CTR) 1,000(2,3) Activated Sludge
Oil and Grease 10,000
Waste Discharge
Requirements
Selenium 5.0
Fresh Water Aquatic
4‐day average (CTR)
Silver 3.8
Fresh Water Aquatic
Instantaneous Max
(USEPA) 13,000(3)
Anaerobic
Digestion
Sodium 69,000 Agricultural WQ Limit
Zinc 120
Fresh Water Aquatic
4‐day average (CTR) 300(3) Activated Sludge
Biochemical Oxygen
Demand (BOD) 30,000
Waste Discharge
Requirements
Primary Compound
Name
Controlling
Limit (ppb)
Source Inhibition
Criteria (ppb)
Treatment
Process
Total Suspended Solids
(TSS) 30,000
Waste Discharge
Requirements
Chloroform 60 Exposure Limits 1,000(2)
Anaerobic
Digestion
Ethylbenzene 1,659 Exposure Limits 200,000(3) Activated Sludge Toluene 2,075 Exposure Limits 200,000(3) Activated Sludge 1) Jenkins, D.I., and Associates. 1984. Impact of Toxics on Treatment Literature Review. 2) Russell, L.L., C.B. Cain, and D.I. Jenkins. 1984. Impacts of Priority Pollutants on Publicly Owned Treated Works Processes: A Literature Review. 1984 Purdue Industrial Waste Conference. 3) Anthony, R.M., and L.H. Briemburst. 1981. Determining Maximum Influent Concentrations of Priority Pollutants for Treatment Plants. Journal Water Pollution Control Federation 53(10):1457-1468. 4) U.S. EPA. 1986. Working Document; Interferences at Publicly Owned Treatment Works. September 1986.

2.6 Evaluation of Existing Data
The City of Visalia provided the following data for the local limits evaluation:
 Daily WWTF flow and influent/effluent sampling
City of Visalia
SECTION TWO Local Discharge Limits Development

Page 9 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc  WWTF Priority Pollutant scans
 Biosolids sampling
 SIU sampling
 Septage sampling
The sampling data provided above was for the period of January 2007 to September 2010. This data is shown in Appendices A, B, C, and F.

The existing data was compared to the values in Table 2-4 and the criteria in Section

2.5. Table 2-5 lists the pollutants of concern and the reason the pollutant is being considered a POC.

City of Visalia
SECTION TWO Local Discharge Limits Development

Page 10 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Table 2-5: Pollutants of Concern
Pollutant Effluent
concentration
more than half of
effluent standard
Sludge
concentration
more than half of
sludge disposal
standard
Influent
concentration
more than 25% of
inhibition
concentration
Required by
EPA
Existing
local limit

BOD X X

TSS X X
Ammonia X
FOG X

Arsenic X X
Boron X
Cadmium X X
Chromium X X X
Copper X X X
Lead X X X
Mercury X X
Molybdenum X X X
Nickel X X
Selenium X X
Silver X X X
Sodium X
Zinc X X X X
Chloride X
Cyanide X X X X
Bis (2-ethylhexyl) phthalate X
Pentachlorophenol X
Tetrachloroethene X
Edosulfan II X
Endrin X
Heptachlor X
Bromodichloromethane X
Bromoform X
4,4' DDE X
City of Visalia
SECTION TWO Local Discharge Limits Development

Page 11 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

2.7 Sampling Plan
A review of the existing City of Visalia information showed there was additional information needed to complete the local limits evaluation.

The City of Visalia has no recent (last five years) monitoring data for residential or commercial users. A sampling plan was needed to address additional information needed for the evaluation. The residential samples were taken to cover every day of the week over at least a two week period (Week 1 – Monday, Wednesday, Friday, Sunday, Week 2 – Tuesday, Thursday, Saturday). The exact dates were adjusted as needed to fit into existing staff work schedules and the availability of the laboratory to perform the required tests. For the sampling at the WWTF, samples were obtained covering at least two different days. No sampling was performed within 48 hours of a measurable precipitation event. Commercial sampling required only one day of sampling. Table 2-6 lists the pollutants that should be monitored, the location, number of samples, test methods, and the preferred detection limit. Test methods listed are EPA test methods except those beginning with SM, which are Standard Methods test procedures.

Residential Sampling
The residential sampling was conducted to cover geographically diverse areas of the City. Based on the layout of the wastewater collection system the following locations were sampled to provide the residential sampling information:
 Comstock
 Hillsdale
 Evergreen
 Mary and County Center
Commercial Sampling
A majority of the commercial establishments within the City are restaurants. The sampling for the commercial loading was conducted at a commercial shopping area that includes some restaurants. The following location was sampled to represent commercial loading:
 Linwood
 Alley off Court
Treatment Plant
Samples and estimates of flow for the following processes were obtained:
 Plant influent
 Primary effluent
 Secondary effluent prior to chlorination
 Feed to anaerobic digesters
City of Visalia
SECTION TWO Local Discharge Limits Development

Page 12 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc  Plant final effluent
Treatment Plant Influent Return Flows
Samples and estimates of flow for the following processes were obtained:
 Scum funnels
 GBT Filtrate
 Supernatant Pit
 SRS (Septage) Station
In addition to the sampling information, the basis-of-design for the treatment plant is needed to ascertain the design loadings for the non-conservative pollutants (ammonia, BOD, and TSS).

Table 2-6: Sampling Plan Information
Pollutant Residential
(seven sampling
events)
Commercial
(one sampling
event)
Treatment
Plant (two
sampling
events)
Treatment Plant
influent return
flow streams
(two sampling
events)
Test
Method
Preferred
Detection
Limit

BOD X X X X SM
5210B
2 mg/L

TSS X X X X SM
2540D
1 mg/L
Ammonia X X X X 350.1 1 mg/L
FOG (HEM) X X X X 1664 10 mg/L

Arsenic X X X 200.8 1 ug/L
Boron X X X 200.7 0.05 mg/L
Cadmium X X X 200.8 0.05 ug/L
Chromium X X X 200.8 1 ug/L
Copper X X X 200.8 2 ug/L
Lead X X X 200.8 0.5 ug/L
Mercury X X X X 1631 0.5 ng/L
Molybdenum X X X 200.8 1 ug/L
Nickel X X X 200.8 1 ug/L
Selenium X X X 200.8 1 ug/L
Silver X X X 200.8 1 ug/L
Pollutant
Residential
(seven sampling
events)
Commercial
(one sampling
event)
Treatment
Plant (two
sampling
Treatment Plant
influent return
flow streams
Test
Method
Preferred
Detection
Limit
City of Visalia
SECTION TWO Local Discharge Limits Development

Page 13 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc events) (two sampling
events)
Sodium X X X 200.7 1 mg/L
Zinc X X X 200.8 5 ug/L
Chloride X X X X 300.0 2.0 mg/L
Cyanide X X X SM4500 5 ug/L
Bis (2-ethylhexyl) phthalate X X X 625 5 ug/L
Pentachlorophenol X X X 625 10 ug/L
Tetrachloroethene X X X 624 0.5 ug/L
Endosulfan II X X X 608 0.05 ug/L
Endrin X X X 608 0.05 ug/L
Heptachlor X X X 608 0.05 ug/L
Bromodichloromethane X X X 624 0.5 ug/L
Bromoform X X X 624 0.5 ug/L
4,4' DDE X X X 608 0.05 ug/L
City of Visalia
SECTION THREE Local Discharge Limits Development

Page 14 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc 3 MAXIMUM ALLOWABLE HEADWORKS LOADINGS
After determining the POCs (Table 2-5) and gathering the additional sampling data, the maximum allowable headworks loadings (MAHLs) can be calculated. The MAHL is the estimated upper limit of a particular pollutant loading to the WWTF intended to prevent pass through or interference. The MAHL for each POC is calculated by the following steps:

1. Calculation of WWTF removal efficiency for the POC;

2. Calculate the allowable headworks loading (AHLs) for the various environmental criteria (such as WDR limits, water quality limits, sludge disposal limits, inhibition values);

3. Designate the MAHL as the most stringent allowable headworks loading for the POC.

3.1 WWTF Removal Efficiencies
Based on the sampling data collected from the City of Visalia WWTF, the removal efficiencies for the POCs were calculated. The removal efficiencies shown in Table 3-1 are the average removal percentages for each POC. The detailed data used to calculate the removal efficiencies is contained in Appendix A. For purposes of calculating the removal efficiencies, any reported concentration that was below the detection limit was assumed to be half the detection limit. Any negative removal efficiencies were assumed to be zero.

Table 3-1: Summary of WWTF Removal Efficiencies
POC Removal Efficiency Number of
Samples
BOD 98.81% 567
TSS 98.65% 919
Ammonia 44% 88
FOG 96% 4
Arsenic 29% 4
Boron 2% 6
Cadmium 67%1 6
Chromium 20% 6
Copper 88% 6
Lead 62% 6
City of Visalia
SECTION THREE Local Discharge Limits Development

Page 15 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc POC Removal Efficiency Number of
Samples
Mercury 95% 5
Molybdenum 35% 4
Nickel 37% 6
Selenium 40% 6
Silver 40% 6
Sodium 3% 5
Zinc 79% 6
Chloride 0% 5
Cyanide 69%1 5
Bis (2-ethylhexyl) phthalate 83% 6
Pentachlorophenol 0%2 6
Tetrachloroethene 0%2 6
Endosulfan II 0%2 4
Endrin 0%2 5
Heptachlor 0%2 5
Bromodichloromethane 0%2 6
Bromoform 0%2 6
4,4’ DDE 0%2 6
1 EPA median removal percentage used since most results were below detection limit.
2 Influent and Effluent samples were all below detection limit.

The sampling plan results showed that for all samples, pentachlorophenol, tetrachloroethene, endosulfan II, endrin, heptachlor, bromodichloromethane, bromoform, and 4,4’ DDE were not present in the influent or effluent of the WWTF.

Therefore, these pollutants were removed from consideration as POCs.

Bis (2-ethylhexyl) phthalate was detected above the detection limit in some of the regular monthly WWTF effluent samples. However, the field blanks obtained during those sampling events showed concentrations greater than the effluent sample values.

This data is shown in Appendix B. Based on this information, the effluent concentrations for bis (2-ethylhexyl) phthalate are considered to be below the detection limit. Therefore, bis (2-ethylhexyl) phthalate was removed from consideration as a POC.

City of Visalia
SECTION THREE Local Discharge Limits Development

Page 16 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc The sampling plan results also showed that the return of WWTF recycle flows to the headworks had a minimal impact on the headworks loading to the WWTF. The return flows are from the scum funnels, GBT filtrate, supernatant pit and the septage receiving station. These flows are estimated to make up approximately 2% of the headworks flow.

3.2 Discharge Permit and Water Quality AHLs
The RWQCB issued the WWTF Waste Discharge Requirements (WDR) that regulates the discharge from the plant. The AHL for POCs with WDR limitations is shown in Equation 1.

Equation 1 – AHL based on WDR limits
AHLwdr = (8.34)(Cwdr)(Qwwtf)
(1-Rwwtf)
Where:

AHLwdr = AHL based on WDR limit, lb/day
Cwdr = WDR permit limit, mg/L
Qwwtf = WWTF average flow rate, MGD
Rwwtf = Plant removal efficiency, as decimal

8.34 = Conversion factor
Table 3-2 shows the allowable headworks loading for the POCs based upon the limitations contained in the WDR.

Table 3-2: WDR Based AHLs
WWTF WDR Select Removal Allowable
Pollutant Flow Limit Removal Efficiency Headworks
(MGD) (mg/l) Efficiency (%) (lbs/day)
(Qwwtf) (Cwdr) (from list) (Rwwtf)
Lead 12.18 0.05 User Entered 62.19 13.434
Ammonia 12.18 25 User Entered 43.89 4525.7652
BOD 12.18 30 User Entered 98.81 256354.5218
TSS 12.18 30 User Entered 98.65 226555.1037
The WDR issued does not contain limitations for all the POCs mentioned in Table 2-5.

For the pollutants without limitation in the WDR, the EPA guidance recommends using AHLs based on State or Federal Water Quality Standards. The water quality standards can be based upon short term aquatic life affects (acute) or long term affects (chronic).

Water quality standards can also be based upon human health effects. The human health effects can be from drinking of the water, recreational use of the water, or consumption of aquatic life. According to the WDR, the discharge to Mill Creek is City of Visalia
SECTION THREE Local Discharge Limits Development

Page 17 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc protected for agricultural water supply, water contact and noncontact water recreation, warm freshwater habitat, and groundwater recharge. The criteria used for this comparison is discussed in Section 2.4. The AHL for POCs that have water quality standards is shown in Equation 2.

Equation 2 – AHL based on Water Quality limits
AHLwq = (8.34)[(Cwq)*(Qstr+Qwwtf) – (Cstr*Qstr)]
(1-Rwwtf)
Where:

AHLwq = AHL based on water quality criteria, lb/day
Cwq = State or Federal water quality standard, mg/L
Cstr = Receiving stream background concentration, mg/L
Qwwtf = WWTF average flow rate, MGD
Qstr = Receiving stream (upstream) flow rate, MGD
Rwwtf = Plant removal efficiency, as decimal

8.34 = Conversion factor
The equation allows for instantaneous mixing of the discharge with the receiving stream. Since there is normally no flow in Mill Creek upstream of the WWTF discharge, the receiving stream concentration and receiving stream flow were considered to be zero.

Table 3-3 shows the allowable headworks loading for the POCs based upon the water quality standards.

Table 3-3: Water Quality (Chronic) Based AHLs
WWTF Receiving
Receiving
Stream Chronic Removal Allowable
Pollutant Flow
Stream
Flow Concentration WQS Efficiency Headworks
(MGD) (MGD) (mg/l) (mg/l) (%) (lbs/day)
(Qwwtf) (Qstr1) (Cstr) (Cwq) (Rwwtf)
Arsenic 12.18 0.00 0 0.15000 28.98 21.4539
Cadmium 12.18 0.00 0 0.00027 67.00 0.0831
Copper 12.18 0.00 0 0.00930 88.14 7.9671
Cyanide 12.18 0.00 0 0.00520 69.00 1.7039
Lead 12.18 0.00 0 0.00320 62.19 0.8598
Mercury 12.18 0.00 0 0.00077 95.17 1.6183
Nickel 12.18 0.00 0 0.05200 37.22 8.4145
Selenium 12.18 0.00 0 0.00500 40.26 0.8501
Zinc 12.18 0.00 0 0.12000 79.37 59.0870
Ammonia 12.18 0.00 0 25.00000 43.89 4525.7652
Chloride 12.18 0.00 0 230.00000 0.00 23363.676
City of Visalia
SECTION THREE Local Discharge Limits Development

Page 18 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Table 3-4 shows the allowable headworks loading for the POCs based upon the agricultural water supply standards.

Table 3-4: Water Quality (Agricultural Water Supply) Based AHLs WWTF Receiving
Receiving
Stream Agricultural Removal Allowable
Pollutant Flow Stream Flow Conc WQS Efficiency Headworks (MGD) (MGD) (mg/l) (mg/l) (%) (lbs/day)
(Qwwtf) (Qstr2) (Cstr) (Cwq) (Rwwtf)
Arsenic 12.18 0.00 0 0.10000 28.98 14.3026
Molybdenum 12.18 0.00 0 0.01000 35.00 1.5628
Boron 12.18 0.00 0 0.70000 1.85 72.4485
Chloride 12.18 0.00 0 106.00000 0.00 10767.6072
Table 3-5 shows a summary of the water quality based AHLs. The most restrictive (lowest) loading for each POC has been highlighted.

Table 3-5: Summary of Water Quality Based AHLs
Allowable Allowable Allowable Allowable
Pollutant Headworks Headworks Headworks Headworks
(NPDES) (CHRONIC) (ACUTE) (WATER QUALITY)
(lbs/day) (lbs/day) (lbs/day) (lbs/day)
Arsenic - 23.4539 14.3026 14.3026
Cadmium - 0.0831 - 0.0831
Copper - 7.9671 - 7.9671
Cyanide - 1.7039 - 1.7039
Lead 13.4337 0.8598 - 0.8598
Mercury - 1.6183 - 1.6183
Molybdenum - - 1.5628 1.5628
Nickel - 8.4145 - 8.4145
Selenium - 0.8501 - 0.8501
Zinc - 59.0870 - 59.0870
Ammonia 4525.7652 4525.7652 - 4525.7652
BOD 256354.5218 - - 256354.5218
TSS 226555.1037 - - 226555.1037
Boron - - 72.4485 72.4485
Chloride - 23363.6760 10767.6072 10767.6072
FOG 22573.6000 - - 22573.6000

3.3 Biosolids Disposal Based AHLs
City of Visalia
SECTION THREE Local Discharge Limits Development

Page 19 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc The biosolids produced at the treatment plant are eventually land applied. The Federal sludge disposal regulations, 40 CFR Part 503, establish limitations for certain metals that are normally seen in industrial discharges. Additionally, California Title 22 contains additional pollutant limitations on the land application of biosolids. These limitations are converted to AHLs for the POCs using Equation 3.

Equation 3 – AHL based on Biosolids Disposal limits
AHLbsol = (0.0022)(Cbsol)(Qbsol)
(1-Rwwtf)
Where:

AHLbsol = AHL based on biosolids disposal limit, lb/day Cbsol = Biosolids limitation, mg/kg dry sludge
Qbsol = Total sludge flow to disposal, dry metric tons per day Rwwtf = Plant removal efficiency, as decimal

0.0022 = Conversion factor
Table 3-6 shows a summary of the biosolids disposal based AHLs. Where a limitation existed for a pollutant in both 503 and Title 22, the most stringent (lowest) limit is used in the table. Details of the Title 22 land application calculations are contained in Appendix C.

Table 3-6: Summary of Biosolids Disposal Based AHLs
WWTF Sludge Flow Land Application Removal Allowable
Pollutant Flow to Disposal Standard Efficiency Headworks (MGD) (MTD) (mg/kg) (%) (lbs/day)
(Qwwtf) (Qbsol) (Cbsol) (Rwwtf) (Lhw)
Arsenic 12.18 4.358636364 41(1) 28.98 1.3568
Cadmium 12.18 4.358636364 17.86074(2) 67.00 0.2556
Chromium 12.18 4.358636364 2833.905(2) 20.41 133.173
Copper 12.18 4.358636364 1500(1) 88.14 16.3185
Lead 12.18 4.358636364 300(1) 62.19 4.6255
Mercury 12.18 4.358636364 17(1) 95.17 0.1713
Molybdenum 12.18 4.358636364 18(1) 35.00 0.4931
Nickel 12.18 4.358636364 420(1) 37.22 10.8190
Selenium 12.18 4.358636364 35.21127(2) 40.26 0.8387
Silver 12.18 4.358636364 566.781(2) 40.42 13.4456
Zinc 12.18 4.358636364 2800(1) 79.37 33.8280
(1)Based on 40 CFR Part 503 regulations.(2)Based on California Title 22 calculations.

City of Visalia
SECTION THREE Local Discharge Limits Development

Page 20 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

3.4 Inhibition Based AHLs
Certain pollutant concentrations in wastewater or sludge can cause operational problems for biological treatment processes. The City of Visalia WWTF operates the following biological processes that may be subject to inhibition issues: activated sludge, trickling filters, and anaerobic sludge digestion. The WWTF has not had historical issues with pollutants causing upsets of the biological processes. The EPA guidance document contains inhibition values for pollutants that have the potential to upset biological treatment processes. These inhibition limitations are converted to AHLs for the POCs using Equation 4, Equation 5, and Equation 6.

Equation 4 – AHL based on Activated Sludge Inhibition Values AHLact = (8.34)(Cact)(Qwwtf)
(1-Rprim)
Where:

AHLact = AHL based on activated sludge inhibition, lb/day Cact = Inhibition criterion for activated sludge, mg/L
Qwwtf = WWTF average flow rate, MGD
Rprim = Removal efficiency from headworks to primary treatment effluent, as decimal (assumed using EPA removal values)

8.34 = Conversion factor
Table 3-7 shows the calculated AHLs based on activated sludge inhibition values.

Table 3-7: Activated Sludge Inhibition Based AHLs
WWTF
Activated
Sludge Removal Allowable
User
Entered
Pollutant Flow Inhibition Level Efficiency Headworks Removal (MGD) (mg/l) (%) (lbs/day) Efficiency
(Qwwtf (Cact) (Rprim) (Lhw) (%)
Arsenic 12.18 0.1 91.90 125.4089 91.90
Cadmium 12.18 1 90.00 1015.812 90.00
Chromium 12.18 1 49.30 200.3574 49.30
Copper 12.18 1 96.10 2604.646 96.10
Cyanide 12.18 0.1 90.00 101.5812 90.00
Lead 12.18 1 80.00 507.9060 80.00
Mercury 12.18 0.1 93.20 149.3841 93.20
Nickel 12.18 1 55.20 226.7438 55.20
Zinc 12.18 0.3 96.00 761.8590 96.00
Ammonia 12.18 480 0.00 48758.98 0.00
City of Visalia
SECTION THREE Local Discharge Limits Development

Page 21 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Equation 5 – AHL based on Trickling Filter Inhibition Values AHLtric = (8.34)(Ctric)(Qwwtf)
(1-Rprim)
Where:

AHLtric = AHL based on trickling filter inhibition, lb/day Ctric = Inhibition criterion for trickling filters, mg/L Qwwtf = WWTF average flow rate, MGD
Rprim = Removal efficiency from headworks to primary treatment effluent, as decimal (assumed using EPA removal values)

8.34 = Conversion factor
Table 3-8 shows the calculated AHLs based on trickling filter inhibition values.

Table 3-8: Trickling Filter Inhibition Based AHLs
WWTF
Trickling
Filter Select Removal Allowable
EPA
Guidance
Pollutant Flow
Inhibition
Level Removal Efficiency Headworks Removal
(MGD) (mg/l) Efficiency (%) (lbs/day) Efficiency
(Qwwtf) (Ctric) (from list) (Rprim) (Lhw) (%)
Chromium 12.18 3.5
Default (Through
Trick. Fil.) 55.00 790.076 55.00
Cyanide 12.18 30
Default (Through
Trick. Fil.) 59.00 7432.77 59.00
Equation 6 – AHL based on Anaerobic Digestion Inhibition Values (Conservative Pollutants) AHLdig = (8.34)(Cdiginb)(Qdig)
Rwwtf
Where:

AHLdig = AHL based on anaerobic digestion inhibition, lb/day Cdiginb = Inhibition criterion for sludge digester, mg/L Qdig = Sludge flow rate to digester, MGD
Rwwtf = Plant removal efficiency, as decimal

8.34 = Conversion factor
Table 3-9 shows the calculated AHLs based on anaerobic digester inhibition values for conservative pollutants.

Table 3-9: Anaerobic Digester Inhibition (Conservative Pollutants) Based AHLs City of Visalia
SECTION THREE Local Discharge Limits Development

Page 22 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc WWTF Sludge Flow Anaerobic Digester Removal Allowable
Pollutant Flow to Digester Inhibition Level Efficiency Headworks (MGD) (MGD) (mg/l) (%) (lbs/day)
(Qwwtf) (Qdig) (Ccrit) (Rwwtf) (Lhw)
Arsenic 12.18 0.03833 1.6 28.98 1.7651
Cadmium 12.18 0.03833 20 67.00 9.5425
Chromium 12.18 0.03833 130 20.41 203.661
Copper 12.18 0.03833 40 88.14 14.5071
Lead 12.18 0.03833 340 62.19 174.764
Nickel 12.18 0.03833 10 37.22 8.5876
Silver 12.18 0.03833 13 40.42 10.2811
Zinc 12.18 0.03833 400 79.37 161.1051
Equation 7 – AHL based on Anaerobic Digestion Inhibition Values (Non-Conservative Pollutants) AHLdig = (Cdiginb) * Linf
(Cdig)
Where:

AHLdig = AHL based on anaerobic digestion inhibition, lb/day Cdiginb = Inhibition criterion for sludge digester, mg/L Cdig = Existing pollutant level in sludge, mg/L
Linf = WWTF influent loading, lb/day
Table 3-10 shows the calculated AHLs based on anaerobic digester inhibition values for non-conservative pollutants.

Table 3-10: Anaerobic Digester Inhibition (Non-Conservative Pollutants) Based AHLs
WWTF
Average
Influent Average
Digester
Pollutant
Anaerobic
Digester Allowable
Pollutant Flow Conc Influent Load Conc Inhibition Level Headworks (MGD) (mg/l) (lbs/day) (mg/l) (mg/l) (lbs/day)
(Qwwtf) (Linf) (Cdig) (Cdiginb) (Lhw)
Cyanide 12.18 2.50 253.9530 3.73 1 68.0839
Ammonia 12.18 95.50 9701.0046 4214.25 1500 3452.929
Table 3-11 shows a summary of the inhibition based AHLs. The most restrictive (lowest) loading for each POC has been highlighted.

Table 3-11: Summary Inhibition Based AHLs
City of Visalia
SECTION THREE Local Discharge Limits Development

Page 23 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Allowable Allowable Allowable Allowable Allowable
Pollutant Headworks Headworks Headworks Headworks Headworks

(ACT.

SLUDGE)
(TRICK.

FILTER)
(DIG. -
CONSERV.)
(DIG. - NONCONS.) (INHIB)
(lbs/day) (lbs/day) (lbs/day) (lbs/day) (lbs/day)
Arsenic 125.4089 - 1.7651 - 1.7651
Cadmium 1015.812 - 9.5425 - 9.5425
Chromium 200.3574 790.0760 203.6605 - 200.3574
Copper 2604.646 - 14.5071 - 14.5071
Cyanide 101.5812 7432.770 - 68.0839 68.0839
Lead 507.9060 - 174.7642 - 174.7642
Mercury 149.3841 - - - 149.384
Nickel 226.7438 - 8.5876 - 8.5876
Silver - - 10.2811 - 10.2811
Zinc 761.8590 - 161.1051 - 161.1051
Ammonia 48758.97 - - 3452.9292 3452.92

3.5 POC Maximum Allowable Headworks Loadings
The maximum allowable headworks loading is the lowest of the AHLs calculated for each POC. Influent loadings below the MAHL will lead to compliance with the AHLs based on all environmental and treatment plant criteria. Table 3-12 shows a summary of AHLs as well as the MAHL for each POC.

City of Visalia
SECTION THREE Local Discharge Limits Development

Page 24 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Table 3-12: Maximum Allowable Headworks Loadings
Allowable Allowable Allowable Maximum
Pollutant Headworks Headworks Headworks Allowable
(WATER QUALITY) (INHIBITION) (SLUDGE) Headworks
(lbs/day) (lbs/d) (lbs/d) (MAHL - lbs/d)
Arsenic 14.3026 1.7651 1.3568 1.3568
Cadmium 0.0831 9.5425 0.2556 0.0831
Chromium - 200.3574 133.1733 133.1733
Copper 7.9671 14.5071 16.3185 7.9671
Cyanide 1.7039 68.0839 - 1.7039
Lead 0.8598 174.7642 4.6255 0.8598
Mercury 1.6183 149.3841 0.1713 0.1713
Molybdenum 1.5628 - 0.4931 0.4931
Nickel 8.4145 8.5876 10.8190 8.4145
Selenium 0.8501 - 0.8387 0.8387
Silver - 10.2811 13.4456 10.2811
Zinc 59.0870 161.1051 33.8280 33.8280
Ammonia 4525.7652 3452.9292 - 3452.9292
BOD 256354.5218 - - 256354.5218
TSS 226555.1037 - - 226555.1037
Boron 72.4485 - - 72.4485
Chloride 10767.61 - - 10767.61
FOG 22573.6000 - - 22573.6000
City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 25 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc 4 DESIGNATING LOCAL LIMITS
After the calculation of the maximum allowable headworks loadings for the POCs, the POCs that require a local limit must be determined. The EPA guidance document recommends developing local limits for those POCs where the average influent loading exceeds 60% of the MAHL. Table 4-1 shows a comparison of MAHLs with the average headworks loadings for each POC. The highlighted POCs are those whose average influent loadings exceed 60% of the MAHL and will be evaluated for local limits.

Table 4-1: Comparison of MAHLs with Average Headworks Loadings Maximum Average Average
Pollutant Allowable Influent Percent
Headworks Loading Loaded
(MAHL - lbs/d) (lbs/day) (%)
Arsenic 1.3568 1.0959 80.7732
Cadmium 0.0831 0.1060 127.5781
Chromium 133.1733 0.4472 0.3358
Copper 7.9671 4.0814 51.2283
Cyanide 1.7039 0.2541 14.9108
Lead 0.8598 0.4302 50.0408
Mercury 0.1713 0.0058 3.3700
Molybdenum 0.4931 0.2642 53.5811
Nickel 8.4145 0.5098 6.0590
Selenium 0.8387 0.0825 9.8349
Silver 10.2811 0.7183 6.9870
Zinc 33.8280 15.8541 46.8668
Ammonia 3452.9292 2471.1932 71.5680
BOD 256354.5218 33233.2884 12.9638
TSS 226555.1037 35048.0272 15.4700
Boron 72.4485 0.1075 0.1483
Chloride 10767.6072 5447.2961 50.5897
FOG 22573.6000 5793.2500 25.6638
Based on the information shown in Table 4-1, there is no local limit necessary for molybdenum, selenium, boron, and chloride. No local limit is necessary for ammonia since a review SIU data for ammonia shows little or no ammonia in the industrial discharge and the influent loading is 71.6% of the MAHL for ammonia.

City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 26 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

4.1 Residential and Background Loadings
There are many other sources of wastewater to the WWTF besides the regulated industrial user flows. These other sources include domestic (residential) waste, storm water, inflow and infiltration, and commercial dischargers. Because the WWTF does not control the discharges from these sources, the loading contributed from these uncontrolled sources must be deducted from the MAHL to determine the loading available for industrial dischargers.

The City of Visalia has a separated sewer system so storm water is conveyed via a dedicated piping system to minimize the volume of storm water entering the sewer collection system and the WWTF. Additionally, the collection system does not have significant volumes of inflow and infiltration. Therefore, the loadings from storm water and inflow and infiltration to the WWTF are considered to be negligible.

The City of Visalia has performed sampling in residential and commercial areas to determine the expected loadings from these sources. This sampling data is contained in Appendix D. The loading from these sources is calculated by Equation 8.

Equation 8 – Residential and Background Loading Calculation Lunc = (Cunc) * (Qunc) * 8.34
Where:

Lunc = Uncontrolled loading, lb/day
Cunc = Uncontrolled pollutant concentration, mg/L
Qunc = Uncontrolled flow rate, MGD

8.34 = Unit conversion factor

4.2 Septage Loadings
The City of Visalia WWTF accepts septage waste from licensed haulers. Since the septage haulers are not subject to local limits like industrial users, the loading the WWTF receives from septage haulers needs to be subtracted from the MAHLs when determining the loadings available for industrial users. The City of Visalia samples some septage discharges and records the volume of septage received. This septage hauler information is shown in Appendix E. Equation 9 is used to calculate the loading from septage haulers.

Equation 9 – Septage Loading Calculation
Lsep = (Csep) * (Qsep) * 8.34
Where:

Lsep = Septage loading, lb/day
Csep = Septage pollutant concentration, mg/L
Qsep = Septage flow rate, MGD

8.34 = Unit conversion factor
City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 27 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

4.3 Maximum Allowable Industrial Loadings
Maximum Allowable Industrial Loadings (MAILs) are the amount of pollutant loadings that the WWTF can receive from controlled sources (permitted industrial users). The MAIL for each pollutant is calculated by Equation 10.

Equation 10 – MAIL Calculation
MAIL = MAHL (1-SF) – (Lunc+SW+GA)
Where:

MAIL = Maximum allowable industrial loading, lb/day
MAHL = Maximum allowable headworks loading, lb/day
SF = Safety factor, decimal
Lunc = Loadings from uncontrolled sources, lb/day
SW = Loadings from septage waste, lb/day
GA = Growth allowance, lb/day

4.3.1 Safety Factor and Growth Allowance
The safety factor is a percentage of the MAHL set aside to account for variability in the data analyzed and other uncertainties. The EPA recommends at least a 10 percent safety factor be used. For the purposes of this local limits study, a 10 percent safety factor will be used for all pollutants.

Growth allowance is a part of the MAHL that can be held reserve to allow for potential growth or expansion within the service area. The growth allowance is normally used for those pollutants that the WWTF was designed to remove, such as BOD, TSS, and ammonia. The City of Visalia does not know of any major growth or expansions to the wastewater collection system. However, five percent will be set aside to allow for any growth that may occur during the life of the local limits. Setting aside the five percent will allow some growth without the need to revise the local limits.

4.4 Local Limits Allocations
There are two common approaches to allocating the available MAIL to the significant industrial users. The two common methods are uniform allocation and Industrial User specific allocation. Different allocation methods can be used for each pollutant.

4.4.1 Uniform Allocation
The uniform allocation method yields one limit per pollutant that will apply to all SIUs.

This allocation method requires that the MAIL for the pollutant be divided by the total flow from all SIUs, even those that do not discharge the pollutant. This method can be overly stringent because some IUs that do not discharge a pollutant will be given an allocation of the MAIL that they may not need. Equation 11 shows the method to calculate a local limit using the uniform allocation method.

City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 28 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Equation 11 – Uniform Allocation Calculation
Clim = MAIL / [(Qsiu) * 8.34]
Where:

Clim = Uniform concentration limit, mg/L
MAIL = Maximum allowable industrial loading, lb/day
Qsiu = Total flow rate from SIUs, MGD

8.34 = Unit conversion factor

4.4.2 IU Specific Allocation
There are two methods to divide the MAIL for each pollutant among only the SIUs that discharge that particular pollutant. These methods develop SIU-specific discharge limits. Any SIU that discharges at or below the background level is given a background allocation.

The SIU Contributory Flow method is similar to the Uniform Allocation method except that the portion of the MAILs above the background level is divided by the flow rate from those SIUs discharging the pollutant above background. Equation 12 shows the SIU Contributory Flow Allocation calculation.

Equation 12 – SIU Contributory Flow Allocation Calculation Clim = [MAIL – Lback] / [(Qsiupol) * 8.34]
Where:

Clim = Uniform concentration limit, mg/L
MAIL = Maximum allowable industrial loading, lb/day
Lback = Background loading allocation for SIUs for which no contributory flow limit is being established for that pollutant, lb/day Qsiupol = Total flow rate from SIUs discharging the pollutant, MGD

8.34 = Unit conversion factor

4.4.3 The Mass Proportion Allocation
The mass proportion allocation method allocates the MAIL to each SIU in proportion to the SIU’s loading of that pollutant. To calculate the allowable loading for a SIU the portion of the MAIL above background is multiplied by the ratio of the current loading from SIU X to the current total loading of a pollutant from all SIUs. This calculation is shown in Equation 13.

Equation 14 shows the conversion of the mass allocation to a concentration.

City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 29 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Equation 13 – Mass Proportion Allocation Calculation
LallX = [LcurrX / LcurrT ] * [MAIL - Lback]
Where:

LallX = Allowable loading allocated to SIU X, lb/day
LcurrX = Current loading from SIU X, lb/day
MAIL = Maximum allowable industrial loading, lb/day
Lback = Background loading allocation for SIUs for which no contributory flow limit is being established for that pollutant, lb/day Equation 14 – Mass Proportion Conversion to Concentration Limit ClimX = LallX / [(QX) * 8.34]
Where:

ClimX = Discharge limit for SIU X, mg/L
LallX = Allowable loading allocated to SIU X, lb/day
QX = Flow rate from SIU X, MGD

8.34 = Unit conversion factor

4.5 Uniform Allocation of Local Limits
Table 4-2 is a summary of the collected information and the proposed local limits based on the uniform allocation method. The details of the calculations in Table 4-2 are shown in Appendix F.

City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 30 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.docTable 4-2: Uniform Allocation of Local Limits Maximum Safety Growth Nonindustrial Nonindustrial Nonindustrial Hauled Waste Hauled Waste Hauled Waste Allowable Local Basis Pollutant Allowable Factor Allowance Concentration Flow Loading Concentration Flow Loading Industrial Limit of Headworks (%) (%) (mg/l) (MGD) (lbs/day) (mg/l) (MGD) (lbs/day) Loading (mg/l) Limitation (MAHL - lbs/d) (SF) (GA) (Cdom) (Qdom) (Ldom) (Chw) (Qhw) (Lhw) (MAIL - lbs/day) (Cind) Arsenic 1.3568 10 10 0.0012 9.887966 0.0998 0.1587 0.011434 0.0151 0.9705 0.0510 SludgeCadmium 0.0831 10 10 0.0001 9.887966 0.0058 0.0383 0.011434 0.0036 0.0571 0.0030 Water QualityChromium 133.1733 10 10 0.0033 9.887966 0.2730 0.2521 0.011434 0.0240 106.2416 5.5857 SludgeCopper 7.9671 10 10 0.0320 9.887966 2.6389 4.2631 0.011434 0.4065 3.3282 0.1750 Water QualityCyanide 1.7039 10 10 0.0009 9.887966 0.0709 0.0000 0.011434 0.0000 1.2922 0.0679 Water QualityLead 0.8598 10 10 0.0014 9.887966 0.1130 0.5129 0.011434 0.0489 0.5259 0.0277 Water QualityMercury 0.1713 10 10 0.0000 9.887966 0.0004 0.0118 0.011434 0.0011 0.1355 0.0071 SludgeMolybdenum 0.4931 10 10 0.0010 9.887966 0.0825 0.0805 0.011434 0.0077 0.3044 0.0160 SludgeNickel 8.4145 10 10 0.0037 9.887966 0.3059 0.2572 0.011434 0.0245 6.4011 0.3365 Water QualitySelenium 0.8387 10 10 0.0006 9.887966 0.0495 0.0390 0.011434 0.0037 0.6178 0.0325 SludgeSilver 10.2811 10 10 0.0001 9.887966 0.0049 0.0035 0.011434 0.0003 8.2196 0.4322 InhibitionZinc 33.8280 10 10 0.1678 9.887966 13.8386 28.7321 0.011434 2.7399 10.4839 0.5512 SludgeAmmonia 3452.9292 10 10 28.4300 9.887966 2344.4980 890.0000 0.011434 84.8700 332.9753 17.5064 InhibitionBOD 256354.5218 10 10 305.68 9.887966 25208.0957 - 0.011434 0.0000 179875.5217 9457.0764 Water QualityTSS 226555.1037 10 10 299.5 9.887966 24698.4581 - 0.011434 0.0000 156545.6248 8230.4914 Water QualityBoron 72.4485 10 10 0.24 9.887966 19.7918 0.0005 0.011434 0.0000 38.1670 2.0067 Water QualityChloride 10767.6072 10 10 56.26 9.887966 4639.5167 650.0000 0.011434 61.9837 3912.5853 205.7068 Water QualityFOG 22573.6000 10 10 76.52 9.887966 6310.2705 1650.0000 0.011434 157.3433 11591.2662 609.4186 Water Quality City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 31 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

4.6 IU Specific Allocation of Local Limits
Based on the uniform allocation method, the proposed local limits for some pollutants are significantly lower than the existing local limits. These pollutants are: cadmium, copper, cyanide, lead, mercury, nickel, silver and zinc. The proposed local limits for these pollutants are also significantly lower than the concentrations seen in the discharge from the SIUs. Sampling data for the SIUs is in Appendix G.

The City currently imposes silver local limits for Josten’s Printing and Publishing and Voltage Multipliers of 4.0 mg/L and 1.0 mg/L, respectively. The mass loading associated with these two SIUs was subtracted from the MAIL before it was distributed amongst the remaining silver contributing SIUs.

IU Specific Allocated local limits are meant to be applied to all industrial users regulated by the IPP. In order to provide additional protection, only 80% of the MAIL will be allocated via the IU Specific Allocation method. This will allow an additional amount of safety in the case where an industry that has not historically discharged a pollutant may discharge that pollutant above background concentrations.

Table 4-3 is a summary of the collected information and the proposed local limits based on the IU Specific Allocation method. Details of the IU Specific Allocation calculations are in Appendix H.

Table 4-3: IU Specific Allocation of Local Limits
Pollutant MAIL
(lb/day)
Uncontrolled
Discharge
Conc (mg/L)
Total IU flow
below
Uncontrolled
Conc (MGD)
Lback
(lb/day)
[Unc Conc x
IU flow below
Unc Conc]
Total IU flow
above
Uncontrolled
Conc (MGD)
IU
Specific
Allocation
Local
Limit
(mg/L)
Cadmium 0.0571 0.0001 2.2166 0.00129 0.0643 0.08
Copper 3.3282 0.032 2.164 0.5775 0.1166 2.14
Cyanide 1.2922 0.0009 2.2773 0.0163 0.0033 36.97
Lead 0.5259 0.0014 2.182 0.0249 0.0986 0.48
Mercury 0.1355 4.76x10-6 1.9236 7.64x10-5 0.357 0.04
Nickel 6.4011 0.0037 2.171 0.067 0.1096 5.53
Silver 8.2196 0.0001 2.1763 0.0011 0.0563 12.40
Zinc 10.484 0.1678 2.211 3.0944 0.0696 9.12
City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 32 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc

4.7 Comparison of Proposed and Existing Limits
Table 4-4 shows a comparison of the proposed local limits to the existing local limits and calculated local limits. Existing local limits for boron and pentachloropenol have been eliminated. Proposed local limits that are greater than the existing local limits are recommended to remain at the existing local limit value to prevent any lessening of local limits. Table 4-4 shows the recommended local limits based upon this evaluation.

Table 4-4: Comparison of Existing and Proposed Local Limits Pollutant Existing Local
Limit
Calculated Local
Limit
Allocation
Method
Proposed Local
Limit
Arsenic 0.05 mg/L 0.05 mg/L Uniform 0.05 mg/L
Boron 1.60 mg/L Not needed None
Cadmium 0.02 mg/L 0.08 mg/L IU Specific 0.02 mg/L
Chromium 3.44 mg/L 5.59 mg/L Uniform 3.44 mg/L
Copper 1.97 mg/L 2.14 mg/L IU Specific 1.97 mg/L
Cyanide 0.16 mg/L 36.97 mg/L IU Specific 0.16 mg/L
Lead 0.30 mg/L 0.48 mg/L IU Specific 0.30 mg/L
Mercury 0.02 mg/L 0.04 mg/L IU Specific 0.02 mg/L
Nickel 2.86 mg/L 5.53 mg/L IU Specific 2.86 mg/L
Silver1 0.76 mg/L 12.40 mg/L IU Specific 0.76 mg/L
Zinc 0.64 mg/L 9.12 mg/L IU Specific 0.64 mg/L
Pentachlorophenol 0.15 mg/L Not needed None
Oil & Grease 200 mg/L 609 mg/L Uniform 200 mg/L
BOD5 18,161 lb/day 89,538 lb/day2 Not applicable 18,161 lb/day TSS 41,633 lb/day 41,633 lb/day2 Not applicable 41,633 lb/day 1 Josten’s Printing and Voltage Multipliers retain silver limits of 4.0 mg/L and 1.0 mg/L, respectively.
2 Plant design capacity.

4.8 Protection of the Treatment Works, Collection System, and Workers

4.8.1 Fume Toxicity
There are certain pollutants that can cause a fire or explosion, corrosive structural damage at the treatment plant, obstruction of flow, inhibition of biological activity due to heat, or discharges that cause the formation of toxic gases, vapors, or fumes.

City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 33 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Explosive and flammable pollutants discharged to a WWTF can threaten the integrity of the collection system and the health and safety of the workers. Under the right conditions, the accumulation of such pollutants in treatment works can produce explosions or fires. There are no POCs listed in Table 2-5 that are listed in the EPA Guidance Manual as being potentially explosive.

The fume toxicity level of a pollutant discharged to a WWTF indicates the likelihood that a WWTF worker will suffer an adverse health effect when the level is approached or exceeded. This level can be measured by the time weighted average threshold limit value (TWA-TLV), which is the concentration to which a worker can be exposed for eight hours per day, 40 hours per week and not have any acute or chronic adverse health effects. Similarly, short-term exposure limits (STELs) are concentrations to which a worker should not be exposed for longer than 15 minutes or more than four times per day (with at least one hour between each exposure).

There were three POCs identified in Table 2-4 that have fume toxicity exposure limits that indicate they may create a toxicity exposure issue for collection system workers.

The three POCs were chloroform, ethylbenzene, and toluene. The fume toxicity discharge screening level can be calculated using Equation 15. The discharge screening level is the concentration in the treatment works above which a local limit may be necessary.

Equation 15 – Calculation of Discharge Screening Level
Clvl = Cvap / H
Where:

Clvl = Discharge screening level, mg/L
Cvap = Exposure limit at 1 atm and 25o
C, mg/m3
H = Henry’s Law Constant, (mg/m3)/(mg/L)
Table 4-5: Fume Toxicity Discharge Screening Levels
Pollutant Exposure
limit (mg/m3
)
Henry’s Law
Constant
(mg/m3)/(mg/L)
Discharge
Screening
Level (mg/L)
Maximum
Concentration
Sampled
(mg/L)
Chloroform 9.76 163.5 0.06 0.028
City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 34 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc Ethylbenzene 542.50 327.0 1.659 <0.0005
Toluene 565.50 272.5 2.075 0.0019
Based on the maximum concentrations sampled in the treatment works and the fume toxicity discharge screening levels, no local limits are needed for chloroform, ethylbenzene or toluene based upon the protection of the treatment works, collection system and workers.

4.8.2 Oil and Grease
Based on the uniform allocation of the oil and grease maximum allowable industrial loading, the local limit would be 669 mg/L. This local limit is based upon protecting the WWTFs ability to meet the WDR oil and grease limitation.

However, by its very nature, grease will adhere to many types of surfaces with sewers especially vulnerable to grease build-up. The cool internal surfaces of sewers provide ideal locations on which thin layers of grease can build up. Over a period of time, clumps of grease will build up to the point that the sewer can be completely choked.

Grease also accumulates due to cooling and dilution of surfactants, that allows the grease to separate and collect on all sewer system surfaces, including wetwells at pump stations, where controls can become fouled and prevent pumps from operating properly.

Based on the residential (background loading) monitoring data, the average background oil and grease concentration is 76.5 mg/L. The average SIU concentration for oil and grease is 133 mg/L. The average oil and grease concentration into the WWTF is 57 mg/L.

The most commonly used local limit for oil & grease is 100 mg/L. The City currently has a limit of 200 mg/L. The 100 mg/L limit is not based upon any empirical evidence but rather on general correlations and an industry consensus that this level limits the build up of oil and grease in the collection system. The federal pretreatment regulations, 40 CFR 403.5(b)(6), prohibit “petroleum oil, non-biodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass through.” In most municipalities, oil and grease limits of 100 mg/L to 300 mg/L are protective of the collection system. Limits may need to vary depending on different factors, such as the number of wet wells, type of sewers, slope of sewers, flow in sewers, maintenance of the sewers, and history of grease related clogs.

Based upon the concentrations of oil and grease from residential and industrial sources and the history of grease, the current local limit of 200 mg/L is protective of the collection system and should remain.

4.9 Public Participation
The EPA General Pretreatment Regulations encourages public participation by requiring public notices or hearings for local limits development. The City of Visalia must publish a notice (including a notice for a public hearing) in a newspaper of general City of Visalia
SECTION FOUR Local Discharge Limits Development

Page 35 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc circulation within the jurisdiction served by the WWTF. All comments regarding the proposed local limits as well as any request for a public hearing must be filed with the Approval Authority (the RWQCB) within 30 days. The Approval Authority is required to account for all comments received when deciding whether to approve or deny the proposed local limits. The decision is then provided to the City and other interested parties, and published in the newspaper. All comments received are made available to the public for inspection and copying.

The City should notify the existing SIUs and other interested parties, individually, of the proposed limits and announce a public comment period in the local newspaper. This public comment period can be open while the proposed limits are submitted to the Approval Authority for initial review. During the comment period, the public may present technical challenges to the rationale for a particular local limit.

4.10 Implementation
Upon approval from the RWQCB, the approved limits need to be added to the existing sewer use ordinance. Once integrated in the sewer use ordinance, the approved local limits can be included into the permits issued to the SIUs.

City of Visalia
SECTION FIVE Local Discharge Limits Development

Page 36 ends

H:\(1) AGENDAS for Council - DO NOT REMOVE\2011\6-20-2011\Item 11q Attachment - Visalia Local Limits Report.doc 5 BIBLIOGRAPHY/REFERENCES
United States. Environmental Protection Agency. Local Limits Development Guidance.

Washington, D.C., July 2004.

APPENDIX A – WWTF Sampling Data
APPENDIX B – Bis (2-ethylhexyl) Phthalate Sampling Data APPENDIX C – WWTF Biosolids Data
APPENDIX D – Residential Background Sampling Data
APPENDIX E – Septage Hauler Sampling Data
APPENDIX F – Local Limits Calculations (Uniform Allocation) APPENDIX G – SIU Sampling Data
APPENDIX H – Local Limits Calculations (IU Specific Allocation)

← All documents from this meeting