HomeMy Public PortalAboutJFOCP 2007-10-25C1 -1xd
mg /L
30 day
C1 -1xd
mgIL
Daily
Maximum
Cl2 -2xd
mg /L
30 day
Average
Cl2 -2xd
mg /L
Daily
Maximum
Cl -3xd
mg /L
30 day
Average
Cl2.3xd
mg /L
Daily
Maximum
Cl -4xd
mgIL
30 day
Average
Cl2 -4xd
mgIL
Daily
Maximum
Antnbun'a
amyl_
30 day
Ace
Ammonia
m t
;Fa!iy
i �4em
_Average
#DIV/0!
0
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
0.62
3.01
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
1.47
5.78
4.76
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
0.76
5.05
1.55
#DIVIO!
0.00
#DIVIO!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
0.15
3.32
0.47
#DIV/0!
0.00
#DIV/0!
0.00
#DIV /0!
0.00
#DIV/0!
0.00
0.12
2.88
0.43
#DIV/O!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
0.07
3.01
0.12
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
0.24
3.71
0.62
#DIV/0!
0.00
#DIVIO!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
0.35
6.48
0.79
#DIVIO!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
0.28
6.16
0.62
#DIVIO!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIVIO'
#DIV/0!
0.00
#DIV/0!
0.00
#DIVIO!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
#DIV/0!
0.00
#DIV /0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
#DIV/0!
0.00
Flow IN
MG/d
30 day
Aver e
Flow IN
MGId
Daily
Maximum
Flow OUT
MG/d
30 day
Aver z e
Flow OUT
MGId
Daily
Maximum
BOD IN
30 day
Avera t a
BOD IN
7 day
Maximum
BOD IN
mgIL
30 day
Aver �;e
BOD IN
mg /L
7 day
Maximum
BOD OUT BOD OUT
mg /L mg /L
30 day 7 day
Avera e Maximum
BOD
Removal
0.66
0.86
0.67
0.86
1487
2436
281
371
8
13
97
0.67
0.89
0.68
0.89
1469.85
1782.96
275.63
291.50
5.78
6.90
98
1.12
1.69
1,12
1.66
2337.96
3397.16
244.88
284.00
5.05
6.50
98
1.45
1.79
1.44
1.80
1792.71
2104.62
151.78
189.50
3.32
5.00
98
1.09
1.44
1.09
1.49
1223.33
1701.87
137.00
153.50
2.88
3.54
98
0.78
0.88
0.74
0.82
1395.11
1894.49
223.00
315.50
3.01
3.68
99
0.71
0.83
0.71
0.81
1475.74
1729.75
266.67
320.00
3.71
4.12
99
0.61
0.77
0.62
0.76
1672.77
2166.23
341.56
445.00
6.48
9.88
98
0.54
0.73
0.54
0.76
1371.58
1916.53
297 75
348.50
6.16
8.20
98
#DIV/0!
0.00
#DIV/)!
0.00
#DIV/0!
#DIV/0!
#DIV/0!
#DIV/0!
#DIV/0!
#DIVIO!
#DIV/0!
#DIV/0!
0.00
#D14//0!
0.00
#DIV/0!
#DIV/0!
#DIV/0!
#DIVA)!
#DIV/0!
#DIV/0!
#DIV/0!
#DIV/0!
0.00
#DIV/0!
0.00
#DIV/0!
#DIV/0!
#DIV/0!
#DIV/0!
#DIV/0!
#DIV/0!
#DIV/0!
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
UPPER FRASER VALLEY WASTEWATER
DMR 2007
TSS
Removal
97
TSS IN TSS IN
mg /L mgIL
30 day 7 day
Aver e Maximum
272 318
270 286
98
311 429
178 242
165 189
268
310
338
391
311 362
#DIV/0! #DIVIO!
#DIVIO! #DIVIO!
#DIVIO! #DIV/0!
TSS -OUT
mg!L
30 day
Averal.e
8
6
8
7
6
TSS OUT
mg /L
7 day
Maximum
8
12
10
10
9
6 9
7 8
13 28
13 15
#DIVIO! #DIVIO!
#DIV/0! #DIV/0!
#DIV #DIVIO!
96
98
98
96
#DIV/0!
#DIV/0!
#DIVIO!
Fecals Fecals
#I100m1 #/100m1
30 day 7 day
Geomean Geomean
2 28
4.32 8.25
3.05
1.00
6.48
1.00
1.42 1.41
5.37 37.15
1.58 2.24
6.8
6.8
6.5
6.5
3.29 35,50
2.20 4.47
#NUM! #NUM!
#NUM! #NUM!
#NUM! #NUM!
pH pH
Daily Dally
Maximum Minimum
6.7 6.1
6.7
6.5
6.9
7.2
6.5
6.5
7.2
6.5
7.0
6.5
7.0
6.6
0.0 0.0
0.0 0.0
0.0
0.0
0 0
T T
0 0
0 O
T T
O
co
O
O
co
O O
0
o
N O
G 0 O
T
O
M
0)
N
CO
N
h
N
CO
N
'4)
N
er
N
M
N
N
N
O
T
N.
T
co
T
T
T
M
T
N
T
0
T
a)
CO
co
In
CO
N
T
Date
Day
Influent
MGD
GCWS #1
Influent Flow
WPW
Influent Flow
FSD
Influent Flow
1- Jun -07
Fri
0.813
0.193
0.153
0.467
2- Jun -07
Sat
0.805
0.162
0.163
0.48
3- Jun -07
Sun
0.812
0.18
0.166
0.466
4- Jun -07
Mon
0.781
0.293
0.156
0.332
5- Jun -07
Tue
0.797
0.307
0.157
0.333
6- Jun -07
Wed
0.794
0.302
0.15
0.342
7- Jun -07
Thu
0.797
0.316
0.154
0.327
8- Jun -07
Fri
0.788
0.368
0.15
0.27
9- Jun -07
Sat
0.813
0.393
0.157
0.263
10- Jun -07
Sun
0.807
0.362
0.159
0.286
11- Jun -07
Mon
0.75
0.362
0.137
0.251
12- Jun -07
Tue
0.792
0.337
0.145
0.31
13- Jun -07
Wed
0.776
0.337
0.15
0.289
14- Jun -07
Thu
0.767
0.334
0.141
0.292
15- Jun -07
Fri
0.811
0.387
0.157
0.267
16- Jun -07
Sat
0.877
0.442
0.16
0.275
17- Jun -07
Sun
0.87
0.415
0.173
0.282
18- Jun -07
Mon
0.791
0.363
0.153
0.275
19- Jun -07
Tue
0.754
0.342
0.142
0.27
20- Jun -07
Wed
0.727
0.313
0.135
0.279
21- Jun -07
Thu
0.71
0.316
0.137
0.257
22- Jun -07
Fri
0.73
0.331
0.15
0.249
23- Jun -07
Sat
0.784
0.341
0.159
0.284
24- Jun -07
Sun
0.774
0.326
0.154
0.294
25- Jun -07
Mon
0.714
0.308
0.141
0.265
26- Jun -07
Tue
0.716
0.292
0.143
0.281
27- Jun -07
Wed
0.728
0.288
0.144
0.296
28- Jun -07
Thu
0.725
0.296
0.143
0.286
29- Jun -07
Fri
0.748
0.323
0.153
0.272
30- Jun -07
Sat
0.808
0.363
0.172
0.273
INFLUENT FLOWS
UPPER FRASER VALLEY TREATMENT PLANT
AVG.
MAX
MIN
0.779
0.877
0.71
0.323
0.442
0.162
0.152
0.173
0.135
0.304
0.48
0.249
03
-16
Flow in MGD
P 0 P P lo
0 io al •••1 b io VI :•4 0
0 01 0 CA 0 Of 0 CA 0
AVG.
MAX
MIN
nr,
UPPER F
0.707
0.825
0.62,
LL Y PLAJ ri
Date
3- Jul -07
4-Jul-07
5-Jul-07
Thu
rr Fri MIIMEI7
�:La"l1 r
II
8-Jul-07
9-Jul-07
10- Jul -07
11-Jul-07
12-Jul-07
13-Jul-07
14-Jul-07
1 5-JuI-07
16-Jul-07
17- Jul -07
18-Jul-07
19-Jul-07
24-Jul-07
25-Jul-07
26- Jul -07
27- Jul -07
30-Jul-07
31- Jul -07
Day
Sun
Mon
Tue
Wed
Tue
Wed
Thu
Fri
Sat
Sun
Mon
Tue
Wed
MIA
20-Jul-07 Fri
21-Jul-07
22- Jui -07 Sun
23-Jul-07 Mon
Tue
Wed
Thu
28- Jul-07 Sat
1 29- Jul -07 Sun
Mon
Tue
Influent
MCI_
0.825
0.734
0.727
0.76
0.781
0.732
0.642
0.634
0.628
0.628
0.659
0.712
0.715
0.634
r 0.226
r 1
0271
0.664
0.709
0.747
0.773
0.658
0.637
0.762
0.772
0.M1
0.678
0.678
GCWS #1
Influent Row
0.341
0.312
0.274
0.319
0.344
0.32
0.336
0.3
0.234
0.235
0.249
0.243
0.274
0.302
0.293
0.284
0.34
0.369
r
r
r
r
0.335
0.343
0.34
0.33
0.309
0.304
Ifkinfif
Influent F
0.188
0.17
0.16
0.18
0.166
0.185
0.166
0.139
0.123
0.13
0.135
0.152
0.162
0.154
0.139
0.137
0.133
0.145
0.15
0.196
FSD
Bn luent Flow
0.296$
0.252
0.293
r
0.183 r
0.15
0.145
0.145
0.145
0.145
0.16
0.284
0.26
0.2661
0.269
I
0.249
0.25
0.2331
0.248
0.268
0.259
0.239
0.239
0.235
0.182
0.289
0.236
0.222
0.231
0.3
0.29
0.369
0.226
0.184
0.191
0.165
0.16
0.1
0.196
0.123
0259
0.248
0.24
0.2041
0.214,
251
0.3
0.182
0
L
.a.
C
0
2
4. 6
0
C
0
0
N
i
r 0 N O h La N 0
r T. r C O C
aow Ui MOW
11)
0
0
N
I
vt
O
O
N
AVG.
MAX
MIN
UPPER F RACER VALLEY TRFM45dEKT V LAAT
0.673
0.688
0.721
0.772
0.737
0.663
0.649
0.634
0.627
0.637
0.682
0.647
0.57
0.602
0.591
0.584
0.603
0.658
0.612
0.561
0.51
0.513
0.547
0.561
0.586
0.568
0.535
0.533
0.518
0.504
0.536
0.607
0.772
0.504
jFASErti' FLcc:1,.se;
GCWS#1
Influent Flow
0.292
0.302
0.351
0.348
0.313
0.274
0.274
0.249
0.257
0.283
0.289
0.242
0.228
0.249
0.257
0.251
0.293
0.35
0.249
0.233
0.217
0.231
0.252
0.259
0.279
0.254
0.248
0.25
0.245
0.246
0.246
0.268
0.35/
0.217
WPW
Influent Flow
0.163
0.16
0.192
0.197
0.202
0.164
0.164
0.162
0.158
0.171
0.195
0.174
0.145
0.152
0.153
0.143
0.158
0.175
0.156
0.142
0.142
0.137
0.135
0.168
0.176
0.182
0.167
0.148
0.133
0.128
0.128
0.160
0.202
0.12G
FSD
influent Flow
0.218
0.226
0.178
0.227
0.222
0.225
0.211
0.223
0.212
0.183
0.198
0.231
0.197
0.201
0.181
0.19
0.152
0.133
0.207
0.186
0.151
0.145
0.16
0.134
0.131
0.132
0.12
0.135
0.14
0.13
0.162
0.179
0.231
0.12
m
O
m
r
0
0
a
O
Flow in MGD
O
c,I
Date
Day
Influent
MGD
GCWS #1
Influent Flow
WPW
Influent Flow
FSD
Influent Flow
1- Sep -07
Sat
0.639
0.322
0.341
-0.024
2- Sep-07
Sun
0.7
0.334
0.203
0.163
3- Sep-07
Mon
0.728
0.307
0.222
0.199
4- Sep-07
Tue
0.562
0.252
0.159
0.151
5- Sep-07
Wed
0.567
0.22
0.174
0.173
6- Sep-07
Thu
0.583
0.235
0.166
0.182
7- Sep-07
Fri
0.554
0.24
0.16
0.154
8- Sep-07
Sat
0,574
0.243
0.18
0.151
9- Sep-07
Sun.
0.547
0.197
0.163
0.187
10- Sep -07
Mon
0.506
0.201
0.151
0.154
11- Sep-07
Tue
0.519
0.219
0.149
0.151
12- Sep-07
Wed
0.495
0.213
0.145
0.137
13- Sep-07
Thu
0.491
0.217
0.143
0.131
14- Sep-07
Fri
0.495
0.223
0.162
0.11
15- Sep -07
Sat
0.54
0.227
0.172
0.141
16- Sep-07
Sun
0.535
0.23
0.204
0.101
17- Sep-07
Mon
0.545
0.202
0.167
0.176
18- Sep-07
Tue
0.5
0.2
0.16
0.14
19- Sep-07
Wed
0.492
0.199
0.158
0.135
20- Sep-07
Thu
0.493
0.21
0.161
0.122
21- Sep-07
Fri
0.496
0.19
0.165
0.141
22- Sep-07
Sat
0.536
0.218
0.178
0.14
23- Sep -07
Sun
0.537
0.218
0.182
0.137
24- Sep-07
Mon
0.519
0.227
0.17
0.122
25- Sep-07
Tue
0.492
0.213
0.16
0.119
26- Sep-07
Wed
0.495
0.198
0.155
0.142
27- Sep-07
Thu
0.497
0.217
0.135
0.145
28- Sep-07
Fri
0.496
0.208
0.14
0.148
29- Sep-07
Sat
0.521
0.225
0.176
0.12
30- Sep -07
Sun
0.536
0.205
0.175
0.156
INFLUENT FLOWS
UPPER FRASER VALLEY TREATMENT PLANT
AVG.
MAX
MIN
0.540
0.728
0.491
0.227
0.334
0.19
0.173
0.341
0.135
0.140
0.199
-0.024
R,)
0 0
0
th
0
0
0
0
0
0
0
Flow in MGD
o ...a.
O ie.1 in L.-1 0
01 0 al 0 at 0
(TOTAL EXPENDITURES
I O &M Reserve Deposit
Capital Reserves Deposit
ISubTotal Salaries /Mgmt Fees 1
i
Salaries
Benefits (health, retirement)
Employment Taxes
JFOC Mgmt. Fees
1SubTotal Plant O&M 1
000K<ccccc --4 rnoo rn 0 0 T GO rn
a) a) o CD 0 ms szr. EV CD CD _0 -0 -0 S
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o co c a a) 2, c 0 0, c CO 0.
a a j 9- CD CD CD as CD
(0 m a) o u) co u) co r aa f=.: ca: s•• xi ca. m 52. 0 m 0 m
10-00 xrn-2-'m c 0 a) co in co m oa x g; 0 0 a) IQ
74 1 03 CO 43
0 CD CO SI) o a
o a .4 co c C n W Er a) su Q) 0 co 3u aa a)
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0 10
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IJFOC PLANT EXPENDITURES
(Total Revenues
Checking Acct Balance
Interest
Capital Reserve Interest
1,016,6201
15,767
360,000
194,8531
118,000
25,600
8,620
42,633
446,0001
4) CO NJ ha CJ cn
CD 01 CO DO Ka NJ Da CO "4 CO 01 cn co CO cn Chi NJ cn Ca CO
0 0 0 3) CD 0 01 C) 0 0 0 IV 0 CD 111 0 CD 000 IV
CD Ca CD C3 CD CD Ca CD CD CD CD CD CD CD CD Ca CD 0 000 CD
0 0 0 CD CD CD Ca CD CD CD Ca CD 0 Ca CD CD CD CD CD 0 0 CD CD Ca CD CD Ca CD CD
CD
CD CD CD
392,664]
Ca CD
146,3081
82,357
14,757
6,561
42,633
246,3561
-a -a -a ...4. tv oa
co ry -Ps .1: Ca) -Ita V Os 01- W C) Is.) CA.)
1N.) CA) ■I 0) CT Cs 03 "4 CO 4). 4).. CT QI 0 1.0 0 31
0) Os --s -4 CII 0) --I 01 00) -0. 0) oa -.a) (00.0.0
CD 4). CD 4h. cn .P. CO CO Oa CO NJ Ca CA CO CD --s. OD 4.& CD CD CD OD .P -D CD CO cn
CD
CD CD CD
1,042,8581
=60,0
147,3581
75,000
24,000
5,725
42,633
535,5001
NJ .-1.
CD Coa K.) -a -a Da Pa Nj -a -a
"4 NJ CD cn PO ^4 CD cn co 41a
0 10 c) Cal .4s. 0 0 0 In C.), CD ca cal na ca ip in ca al cDO b "c) iv
CD CD CD CD 0 CD C) CD CD CD 0 CD CD CD 0 0 CD Ca CD Ca 0 0 C) CD CD Ca
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 CD CD 0 0 C)
134,782
134,782
0
0
850,0781
=60,0
147,7781
75,000
24,420
5,725
42,633
342,3001
CO Na 4h. NJ Na D.)
i0 0 ca ln -It• 0 10 i:a ln 'in i:a "ca i=a fp iv i:, ip b 1:) 0 c) C, 17, I
CD CD CD C) CD CD CD CD CD Ca CD CD CD CD CD CD CD CD CD CD CD CD CD Ca C) Ca
CD C) CD CD CD CD C) CD CD Ca C) C) CD CD CD CD 0 CD CD CD CD CD CD Ca CD CD CD CD C)
220,547
177,282
765
42,500
1,336,9761
360,000(
52,9581
154,5181
42,6331
6,2851
26,6001
79,0001
769,5001
000'517
1000b0£
10,0001
1,000
3,500
2,400
1,000
9,000
147,000
4,500
7,500
22,000
17,000
50,0001
17,500';
200
1,000
r 2,000
25,000
27,000
2,500
27,000
25,000
15,000
100
100
3,000
4,200
1 203,547
25,000
500
L 178,047
327,6561
86,4001
12,8691
1
1
1
41,3991
14,2111
1,527(
6,4641
19,1971
1
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4).
Bill Ritter, Jr., Governor
James B. Martin, Executive Director
Dedicated to protecting and improving the health and environment of the people of Colorado
4300 Cherry Creek Dr. S.
Denver, Colorado 80246 -1530
Phone (303) 692 -2000
TDD Line (303) 691 -7700
Located in Glendale, Colorado
http://www.cdphe.state.co.us
Steamboat Springs Area Office
410 South Lincoln Avenue, Suite A -5
Steamboat Springs, CO 80487
Phone: 970 879 -7479
FAX: 970 -871 -0194
Email:
September 19, 2007
Ronald Anderson, President
Fraser Sanitation District
PO Box 89
Fraser, CO 80442
Laboratory Services Division
8100 Lowry Blvd.
Denver, Colorado 80230 -6928
(303) 692 -3090
STATE OF COLORADO
Colorado Department
of Public Health
and Environment
Subject: Compliance Inspection of Wastewater Treatment Facility (CDPS No. CO- 0040142) and
Stormwater No Exposure Certification; Fraser SD; Grand County
Dear Mr. Anderson:
This letter serves to report the results of the compliance inspection conducted by the Engineering
Section of the Water Quality Control Division "the Division on the above referenced facility on
March 29, 2007. The assistance of Joe Fuqua was very helpful and greatly appreciated. I have
enclosed a copy of the inspection report for your records.
DOMESTIC WASTEWATER SYSTEM
Violations
During the inspection, no violations of the permit were noted.
Permit Issues
These items may assist the Division during the next discharge permit renewal or to provide clarification
for an amendment to the current permit. During the inspection, we observed the following facility
conditions that are not accurately represented in the permit:
1. The plant is using caustic soda as a feed to maintain alkalinity during nitrification. If this
practice is to continue, it should be incorporated into the permit.
Page 2
Self Reported Data Review
During the inspection self reported compliance data contained in your discharge monitoring reports
(DMR) were reviewed /discussed from January 2006 to February 2007 and the following violations
were discussed: Low pH in January 2007.
If you have been responding to our Compliance Assurance and Data Management (CADM) Unit
regarding these violations, please continue that effort to resolve these issues. If you have not responded
to our CADM Unit regarding these violations, please do so as soon as possible. As I discussed with Mr.
Fuqua, low pH resulted in addition of caustic soda to the plant influent on a continuous basis. As I also
discussed with Mr. Fuqua, you should monitor alkalinity and TKN throughout the plant to see if the
problem is related to naturally low levels of alkalinity in the plant influent or to incomplete
denitrification in the secondary treatment system.
Other Observations/Recommendations
The following are observations, comments, and /or recommendations only and require no written
response on your part. The recommendations will enable your system to better conform to applicable
design criteria or other industry standards:
1. You should be diligent about identifying sources of Infiltration and Inflow (I &I) since they
significantly impact your plant capacity.
2. As discussed above, you should continue your investigation of the source of low pH in the plant.
Most treatment plants in the area do not need to add caustic soda for pH control.
3. Mr. Fuqua mentioned that you still interested in upgrading your SBR to increase capacity.
Please feel free to contact if you would like to discuss this further.
STORMWATER NO EXPOSURE CERTIFICATION INSPECTION
The facility was inspected to confirm its eligibility for the No Exposure Certification for exclusion from
CDPS Stormwater Permitting.
The Division has reviewed the results of the inspection and, given the information provided, has
determined that the facility does meet the requirements for the "No Exposure" Exclusion.
Reminders
Sanitary sewer overflows (SSO) and any other spills are required by law to be reported to the
Department within 24 hours of discovery. The Department's 24 -hour toll -free number for spill
reporting is 877 -518 -5608
Construction of interceptor sewers, lift stations, and treatment plants, including
modification/expansion of existing facilities, requires site and design approval.
Most regulations, guidance documents, and forms are available via Internet on the Department's
website. Please link to for further information. You can link directly to
the Engineering Section's webpages at ya_x_
Page 3
Attached to this letter you will find a Customer Satisfaction Survey. We would greatly appreciate it if
you would take a few moments to complete this survey and return it to us. Simply fill out the form, fold
it according to the directions and drop it in the mail. The postage is already paid!
If you have any questions, please contact me at 970 879 -7479. Thank you for your time and
cooperation.
Sincerely,
7
Andy Poirot
District Engineer
Engineering Section
Water Quality Control Division
Colorado Department of Public Health and Environment
Encl.: CDPS Facility Inspection Report
SSO Evaluation
Customer Satisfaction Survey
cc: Lurline Underbrink Curran, Grand County Manager
Scott Penson, Grand County Sanitarian
Leslie Simpson, CADMSection, WQCD Denver /File
Kathy Dolan, Stormwater Program, WQCD Denver
Lee Hanley, US EPA 8ENF -T
Tom Schaffer, WQCD -Grand Junction
Code CDPS Permit No. Insp. Date
N CO 0040142 3/29/2007
Name of Facility
Fraser Sanitation District
Physical Location:
NE of Fraser off Hwy 40
Name(s) of On Site Representative(s)
Joe Fuqua
Facility Mailing Address:
Box 120 Fraser, CO 80442
Treatment
Facility Level: j B
Operator Level B 8 1511
Certificate 1511
Operator in charge: ;Joe Fuqua
Email Address:
of Operators: j 2
Phone
Name(s) of Person(s) Conducting Inspection
Andy Poirot
S Permit S
S (Records /Reports S
S Site Review S
On Site Analysis: !DO, pH, TRC
Contract Lab: Granby Sanitation
FC,BOD,TSS,NH3-N;
ISeaCrest WET
Total Taps: 4732 Industrial Taps: 1
Design Capacity Hydraulic (MGD):
Design Capacity Organic (#/day):
p Y 9 Y):
1 iBarscreen
2 Activated Sludge
2 Aerobic Digester
Coagulation
IFlow Measuring
Laboratory
Effluent/Receiving Water
1 ',Mechanical Bar Screen
IRBC
Filter Press
Polishing Pond
CDPS FACILITY INSPECTION REPORT
Insp Type Inspector Facility Type
S S 1
Entry Time
1:00:00 PM
Phone No.
970- 726 -9172
1
Other Treatment: ,Low pH issues, adding caustic soda to maintain permit limits
COMMENTS: ;See caustic addition, above and I &I issues.
Outfall Latitude Longitude Flow Device
001 18" magmeter
3001 39° 37' 44" 105° 48' 56" 12" Parshall flume
Rating
4
Collection
Facility Level: 2
Operator Level 2
Certificate 16991
Operator in charge: Joe Fuqua
Email Address:
of Operators:
Phone
Title:
DE
(S Satisfactory, M Marginal, U Unsatisfactory, N/A Not Applicable, N Not Evaluated)
N Pretreatment
S (Compliance Schedule
S :Self monitoring
Sample Per Permit: Yes
Biomonitoring
N
Does Permit Match Facility Yes
Date Calibrated Accurate?
2/1/2007 Yes
2/1/2007 Yes
Permit effective date:
12/1/2005
Permit expiration date:
11/30/2010
2
2 -16991
QA County No.
25
Phone No.
970 879 -7479
S Operations /Maintenance
S Biosolids Disposal
S Stormwater
S I SSO CMOM
No. of Lift Stations: 0 1/1 Problem: Yes
Treatment Process(es) Used
2 Present Hydraulic Loading (MGD):
4170 Present Organic Loading /day):
Treatment Units
IComminutor 1 Grit Removal
SBR Trickling Filter 2 Secondary Clarifier
1 Centrifuge Drying Bed 'CL2 ,DeCL2
Lagoon lAerated Lagoon Land Trmt Reuse
0.76 Hydraulic Capacity Used 38%
1412 Organic Capacity Used 34%
Outfall Name
!Primary Clarifier
Anaerobic Digester
2 !UV Filter
Wetlands
Inspection observation verifying SSO events
YES
NO
N/A
1. Sewer back -ups into basements?
S
Feet (or miles) of sewer:
2. Manholes overflow during high flow?
Age of collection system:
tZ
3. Bypasses from collection system?
e ,..(2_-
V
Number with back -up power supply:
4. Pipe blockages or breaks?
t.
5. Inflow /infiltration plan in place?
6. Testing for inflow /infiltration?
Size of service area (acres):
32_0 0
NO
Population of service area:
0 75
S
Feet (or miles) of sewer:
8. Was the public notified?
Age of collection system:
315 u--..
tZ
Number of pump stations:
e ,..(2_-
Number with back -up power supply:
Entity Name:
Permit Number:
Date of Inspection:
(D --a3 L/ o /Cf2_
312.9 /7)
T. General Information
Comments:
II. Evaluation Information
If yes to any of questions 1 4:
SANITARY SEWER OVERFLOW EVALUATION
Comments:
ssoinsp2
revised October 9, 2007
YES
NO
N/A
7. Were SSO's reported to the State upon discovery?
8. Was the public notified?
tZ
9. Number of SSO's?
10. Quantity (volume) of any SSO?
Entity Name:
Permit Number:
Date of Inspection:
(D --a3 L/ o /Cf2_
312.9 /7)
T. General Information
Comments:
II. Evaluation Information
If yes to any of questions 1 4:
SANITARY SEWER OVERFLOW EVALUATION
Comments:
ssoinsp2
revised October 9, 2007
Aakaik.`44,1V.,4114,,,Vok,y, 04*.00,0400.031014,04,
ir
FLUENT
nitrogen is kWIL
b P 91 A
otherwise DO may enter the zone. The extent of mixing can be judged by
visuai observation or by using sludge blanket measuring devices or core sam-
pling equipment.
Process pH control. Effective biological phosphorus removal may cease
below a pH of 6.0. If a biological phosphorus removal process must be sup-
plemented by addition of metallic salts to meet effluent TP limitations, the
acid yielding properties of the metallic ions merit consideration. If alum is
used, 5.6 mg/L of calcium carbonate alkalinity will be consumed for each 1
mg/L of aluminum ion added. Ferric salts will consume 2.5 mg/L of
alkalinity for each 1 mg/L of lark ion added.
If nitrification is combined with phosphorus removal, the acidic nature of
4
the biological nitrification reaction reduces aikalimty and p
1#0or V.M.84-eA
41 91 iv(
,R,Mr,$,V.ZMZM
get somec
1ka1in bv otherreacii
Phosphorous removal processes need at least 50 mg/L of calcium car-
bo nate alkalinity remaining in the final effluent. If alkalinity falls below this
level, addition of 53 raga, of sodium carbonate, or 90 mg/L of lime, will
restore the alkalinity to near 50 mg/L.
Internal Return Streams and Sludge Processing. Particularly with
mainstream processes, the internal return streams from sludge processing
operations can return SP to the wastewater treatment processes. If sludge
remains in the clarifier blanket for an excessive time, anoxic conditions may
develop and SP can leach from the sludge. Sludge thickener overflows
cart contain high amounts of SP. Vacuum filter and belt filter filtrates,
anaerobic digester supernatant, and aerobic digester decant are other
obvious sources of SP.
All the above SP-containing streams can decrease the SBOD:SP ratio
enough so that biological phosphorus removal deteriorates. In this case,
chemical treatment of the return streams may be necessary to insolubilize SP.
The sideslream process is not as vulnerable to the return streams because the
WAS contains less TP and the flow through the stripper and precipitation
step can be increased to account for increased SP.
Biological Nutrient Removal Processes 693
Table 22.7 Effect of oxygen transfer efficiency and residual a
on operating pH of activated sludge process.
Resklual
alkalinity
as CaC3, mgfL
50
75
100
125
150
175
200
pH at stated
operating transfer efficiency, percent
Coarse-bubble range
6 9
6.9 6.7
7.1 6.9
7.2 7.0
7.3 7.1
7.4 7.2
7.4 7.3
7.5 7.3
Fine-bubble range
12 18
6.6 6.5
6.8 6.7
6.9
7.0 6.9
7.1 7,0
72 7.0
7.2 7.1
Typically, an operating pH level of 7.2 or higher is optimal in nitrification
processes. As an example, assume that the aeration system has a residual alka-
linity of only 75 mg/L as CaCO3. Table 22.7 indicates that a residual alkalinity
of 175 mg/L is required to maintain a p11 of 7.2. The difference between avail-
able alkalinity and required alkalinity is 100 rng/L as CaCO3. This indicates
that a lime dose of 56 mOL (as CaO) is needed.
The alkalinity and nitrogen loads to the nitrification process may fluctuate
widely. The operator should pay attention to diurnal fluctuations of ammonia
relative to :alkalinity and, in particular, monitor supernatant returns from an-
aerobic digesters and recycle streams from solids dewatering processes. Typi-
cally, these recycles can have high ammonia concentratioris. However, their
alkalinity may be less than the concentration required to support full nitrifica-
tion. Introduction of this recycle stream into a nitrifying activated sludge sys-
tem can exhaust the system's available alkalinity and oxygen. In some
facilities, additional alkalinity must be added, usually in the form of sodium
carbonate (soda ash), to maintain high pH and full nitrification. In other facili-
ties, sufficient residual alkalinity may exist in the main flow stream. Table
22.8 gives typical ammonia values for anaerobic digester supernatant.
Table 22.8 Supernatant characteristics of anaerobic digesters.
Primary plants, Trickling Activated sludge
filters, mgfL plants, mg/L
Suspended solids 200- 1 000
BOD5 500- 5 000 5 0Ci3 15 000
500 3 000 500 5 000 1 o o o 10 000
COD 1 000 5 000 2 000 10 000 3 000 30 000
Ammonia 300 400 400 600 500 1 000
Total phosphorus 50 200 100 300 300 1 000
Process Performance Improvements 813
pH and Alkalinity Relationships. Chapter 17 describes average daily
wastewater characteristi and design considerations for nitrification. How-
ever, hourly changes or deficiencies in pH and alkalinity relationships hinder
aduificadon processes and =ate the greatest need for chemical augmentation.
Even though the range of reported optimum pH values is wide, it is univer-
sally accepted that the rate of ammonia oxidation decreases as pH drops into
di& acid range (pH <7). Various investigators have reported the effects of pH
depression on nitrification. Gener the nitrification rate has been found to
decrease markedly when the pH of the reactcs drops rapidly into the pH
range of 6.3 to 6.7 or lower.
Because of the effect of pH on nitrification rate, it is especially important
that the wastewater contains sufficient alkalinity to buffer the acid produced
by the ninifiers. Since 7.14 mg of alkalinity (measured as CaCO3)/ma of am-
monia nitrogen oxidized to nitrate nitrogen are destroyed, the addition of
soda ash (sodium carbonate) or caustic soda (sodium hydroxide) may be required
to supplement insufficiently alkaline wastewaters and prevent the lowering of pH.
Soda ash is one of the best and safest sources of carbonate alkalinity. How-
ever, in most cases where nitrification is impeded by low pH, less expensive
chemicals, such as lime or caustic soda (sodium hydroxide), can be used.
The need for chemical addition in the tivated sludge process may be in-
fluenced not only by the initial pH and alkalinity of the wastewater, but also
by the type of aeration system. Table 22.7 presents calculated data for final
pH, comparing coarse-bubble and fine-bubble diffusion systems. Actual pH
values may differ due to variations from the assumed conditions, but the
trends are valid for most municipal wastewaters. Table 22.7 shows that sys-
tems with higher transfer efficiencies (fine-bubble diffusion) are likely to pro-
duce lower effluent pH than systems with lower transfer efficiencies
(coarse-bubble diffusion). The drop in pH will also be influenced by the
gas transfer efficiency of the aeration system. Systems with higher gas trans-
fer efficiencies are capable of introducing more carbon dioxide than those
with bower gas transfer efficiencies. Dissolved carbon dioxide forms carbonic
acid, lowering the p11 of the waste stream.
The change in pH can also be influenced by the activated sludge flow con-
figuration, particularly the plug flow system. in this system, the pH steadily
d from the influent to the effluent end, preceded by a decline in alka-
linity due to nitrification. The drop in alkalinity is proportionate to the oxida-
tion of ammonia to nitrate (7.14 mg of CaCO3/mg of Nlb-N converted to
NO3-N).
Complete-mix systems, under similar loadings, generally show a uni-
formly depressed pH throughout the aeration tank because its mixed contents
are uniform. This can be a distinct disadvantage for niuificadon in complete-
mix systems as compared to plug flow systems, due to the sensitivity of first-
stage nitrifiers to pH.
812
Volume 11: Liquid Processes
October 18, 2007
Joe Fuqua, Plant Superintendent
Fraser Sanitation District
P.O. Box 89
Fraser,, CO 80442
Dear Joe,
NTEll PARK WATER
,c.„ SANITATION
RAN D C I H STRICT
Sherri Jones, an Engineering Consultant for our District, was present at our October
board meeting when our Board was discussing the JFOC Budget. Since one of her
specialties is treatment plant operations, her ears perked up when the alkalinity building
costs were discussed. Sherry shared with our board her many experiences with helping
treatment plant operators gain back most of the alkalinity lost in the nitrification process.
She believes that if her assistance doesn't prevent the use of adding chemicals to create a
higher alkalinity, as a minimum her experience could be used to greatly reduce the
amount of chemicals needed. This would represent a huge saving of O &M costs to the
Plant with only a minimal investment in her time. After hearing her expertise on the
subject and having faith in her abilities, the Winter Park Ranch Board would like to
suggest a combination of your ideas and Sherri's to resolve the Plant's alkalinity issues.
We believe that you will enjoy working with her as much as we do.
Our Board plans to discuss this alternative during the Budget Hearing at the October 25
JFOC Meeting. Please be prepared for this conversation. Attached is a Proposal from
Sherri Jones of RTW.
Thank you for working with us to pursue all possibilities.
Sincerely,
Kirk Klancke
District Manager
Cc: JFOC Board Members
P. O. Box 1390 0 601 Park Place e Fraser, CO 80442 m (970) 726-8691 Fax (970) 726 -9627
Mr. Kirk Klancke
Winter Park Ranch Water Sanitation District
PO Box 1390
Fraser, Colorado 80442
Reference: Wastewater Treatment Plant Evaluation
Dear Mr. Klancke:
This letter and the attached General Provisions can serve as our Agreement for the referenced
project. Rothberg, Tamburini Winsor, Inc. (RTW) will provide the Scope of Services listed
below. RTW will invoice monthly, at the rates shown on the attached rate sheet. Expenses will
be invoiced at cost plus 10% to cover insurance and handling.
SCOPE OF WORK
This project is the evaluation of the Fraser Wastewater Treatment Plant for alkalinity
requirements. RTW will review the as -built drawings, conduct a site visit with the operator and
review operating and discharge monitoring data.
Background
October 18, 2007
J0- 1583 -PP -C
SL# 33255
The Fraser treatment plant receives wastewater from three Districts: Grand County Water
Sanitation District No. 1, Fraser Sanitation District, and Winter Park Ranch. Treated effluent is
discharged into the Fraser River. The plant's effluent limits include an ammonia limit that
ranges between 1 mg/L to 10 mg/L depending on the month.
The treatment plant has a permitted capacity of 2.49 MGD. Current maximum day flows occur
around the end of December and measure 1.2 MGD. The average flow for the month of July was
0.71 MGD, with an ammonia load of approximately 90 lb /day. If the treatment plant was
achieving biological nutrient removal, the alkalinity required to convert the ammonia to nitrate
nearly matched the influent alkalinity.
The treatment plant has experienced problems meeting the effluent pH limit of 6.5, which may
be due to a lack of alkalinity in the wastewater. Available alkalinity is consumed during
ammonia conversion at a rate of 7 lb of alkalinity per lb of ammonia converted. Additionally,
aerobic digestion of sludge converts the solids to carbon dioxide, water and ammonia. The
ammonia is subsequently oxidized to nitrate. The return stream from the centrifuge could
contain ammonia and /or nitrate that puts a further demand on alkalinity.
c: \documents and settingairk Vocal settings \temporary intemet files \olklc4 \wpr proposal_101807.doc
1'o fe`isionLll Engineers t Consu
On -Site Work
The evaluation would include a site visit to sample influent, effluent, aeration basin and return
streams for pH, dissolved oxygen, ammonia, and nitrate. Sampling of the digester decant and
centrifuge centrate returned to the headworks is required to determine the ammonia and nitrate
loads this return stream puts on the treatment process.
Report
The report will discuss possible operations changes to optimize nitrification and denitrification.
One example of an operational change would be to operate the aerobic digester with a blower on-
off cycle. Turning the blowers off for a period of time to achieve anoxic conditions in the
digester would facilitate denitrification. Converting nitrate to nitrogen gas returns back to the
treatment process approximately one -half of the alkalinity required to convert ammonia to
nitrate.
The report will also discuss alkalinity chemicals and recommended storage and feed equipment.
Alkalinity chemicals include soda ash, sodium bicarbonate, caustic soda, hydrated lime, and
magnesium hydroxide. Chemical selection criteria will include chemical cost, sludge
production, the chemical's affect on mixed liquor settleability, and storage requirements.
The results of the evaluation will be presented in a letter report that includes a discussion of the
treatment process, suggested operational changes, and recommendations for improvements.
SCHEDULE
The site visit and data collection phase will be completed by December 1, 2007. A draft report
will be provided to the Board by January 5, 2008. Review comments will be incorporated and
addressed in a Final Report and provided to the Board by February 5, 2008.
FEE
The fee for this work, including expenses, will be on a time and materials basis. The contract
maximum is $5,000. Time will be billed at rates listed on the current preferential rate sheet.
You may indicate your acceptance of these provisions by signing where indicated below and
return a copy to us for our files. If you have any questions regarding this Agreement, please
contact me directly. My direct telephone number is 720.931.9317 and my e -mail address is
SDJartweng.com.
Very truly yours,
Rothberg, Tamburini Winsor, Inc.
1-2A. erkfb0
Sherri D. Jones, P.E.
Vice President/ Senior Project Manager
SDJ /sdj
Attachments: General Provisions
Rate Sheet
ACCEPTED BY: WINTER PARK RANCH WATER SANITATION DISTRICT
By Date
Title