new approaches to developing local limits industrial & hazardous waste committee meeting july...
TRANSCRIPT
![Page 1: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/1.jpg)
New Approachesto
Developing Local Limits
Industrial & Hazardous WasteCommittee Meeting
July 18, 2001
byRichard W. von Langen, P.E.
New Approachesto
Developing Local Limits
![Page 2: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/2.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
2
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Sampling Data
• Where?
• What?
• When?
– Residential, Commercial, Industrial, Treatment Plant, Collection System
– POC, Conservative, Non-Conservative, O&G, VOC, TDS, pH
– 1-2 Weeks, Monthly, Quarterly, Weekends, Wet Season, Dry Season
![Page 3: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/3.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
3
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Characterizing the Waste andHow Low Can You Go ?
• Metals
• CN, O&G, VOC
• BOD, TSS
• Representative Sampling
• Liquids Versus Sludge
– Ag, As, Cd, Cr, Cu, Hg, Ni, Pb, Zn
– Grab Samples? CN in residential WW ?
– Flow Proportional, Process Water Meters
![Page 4: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/4.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
4
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Now… What do I do with the Data?
• Mass Balances
• The “< MDL” Dilemma
• Variable
• When There Isn’t Enough?
– Collection System, Headworks, Plant
– Should the value be used? Assign it a O or =, 50%, or 2/3 of the MDL?
– O to > Avg + 2 SD; SD > 20%, NDs
– Less than 5 (10, 21?) data points
![Page 5: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/5.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
5
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Limiting Criteria
• Collection System & Primary Treatment
• Worker Health & Safety
• Biological Treatment Inhibition
• Effluent Limit
• Sludge Disposal
• Air Emissions
– Physical Inhibition or Corrosion
– Airborne, pH related
– EPA Guidance, Plant Data?
– Stream, CTR, Ocean Discharge Limit, Title 22, No Limit
– 503, Fed HW, State-TTLC, STLC
– Odor, VOC
![Page 6: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/6.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
6
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Mass BalancesHeadworks data are the fulcrum point for mass balances
Industrial Waste Residential Commercial
EffluentSludge
Headworks
![Page 7: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/7.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
7
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Headworks Mass Balance
IW + RES + COM = Headworks
• Effect of Collection System Operations• Lots of NDs• One or Two NDs• No Commercial Samples• Headworks Data Versus Plant Removal• EPA-Within 10-15%
![Page 8: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/8.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
8
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Plant Mass Balance
Sludge
Sludge Treatment
HeadworksSecondary Treatment
PrimaryTreatment
Disinfection Effluent
• Chemical Addition• Consumption• Different disposal options• No prim/sec sludge data• Return flows• NDs
![Page 9: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/9.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
9
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
American Canyon WWTP Flow Diagram
IndustrialFlow
TreatmentTrain 1
Surface WaterDischarge*
ChlorineDisinfection
UVDisinfection
Reuse asRecycled
Water
Domestic/Commercial
Flow
(Winter)
Sludge HoldingBasin
Landfill LandApplication
Dewatered Sludge
Sludge
Sludge
TreatmentTrains 2, 3, 4
* Instantaneous concentration limits and rolling 12-month mass limits
![Page 10: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/10.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
10
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
VCWD WWTP
Sludge
Sludge Treatment
HeadworksSecondaryTreatment
PrimaryTreatment
PercolationPonds
Discharge
TertiaryTreatment
Recycle
![Page 11: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/11.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
11
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Example - Aluminum
1.8 X 2.4 = 36#
50#
39#
E - 6#
S - 33#
R - 2.65 x 2.22 = 49#
I - 0.82 x 0.18 = 1#
C- ?
![Page 12: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/12.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
12
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Raw Data - Aluminum (mg/L) Residential
#1 #2 #32.9 4.5 2.0
4.7 2.4 2.2
1.6 1.6 4.1
2.3 2.0 2.8
4.1 1.7 3.1
2.8 1.4 3.5
1.7 2.6
Avg – 2.66 SD – 1.01 % SD – 38 Med – 2.4
![Page 13: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/13.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
13
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Raw Data - Aluminum (mg/L) Headworks
2.3 Avg – 1.81.8 SD – .351.5 % SD – 201.6 Med – 1.81.91.81.42.41.5
![Page 14: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/14.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
14
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Aluminum Local Limit • WDR
• POTW Flow
• POTW % Removal
• MAHL
• Existing Influent
• Uncontrolled Influent
• MAIHL
• Uniform IU Conc. Without Safety Factor
– 1.0 mg/L
– 2.4 MGD
– 84
– 128 lb/day
– 36-50 lbs/day
– 35-49 lbs/day
– 93-79 lbs/day
– 63-53 mg/L
![Page 15: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/15.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
15
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Example - Cadmium
R - NDC - ?I - 0.00154#
E - NDS - 0.0021#
ND
![Page 16: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/16.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
16
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Raw Data - Cadmium mg/LIndustrial Contribution
#1 #2 #36 days – ND 4 days – ND 6 days – ND
1 day – 0.004 2 days – 0.001 Same process as #2
Residential – ND Headworks – ND Plant Inf/Eff – ND
MDL=0.001
![Page 17: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/17.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
17
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Cadmium Local Limit
40 CFR 503 39 mg/Kg CdPOTW % Removal 70%MAHL 0.05787 lb/dayIndustry ContributoryAllocation
0.3 mg/L
![Page 18: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/18.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
18
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Example - Silver
R - <DL mg/LC - ?I - 0.00054#
E - ND mg/LS - 0.013#
Headworks<DL
![Page 19: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/19.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
19
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Limiting Criteria for Silver
• Process Inhibition
• Pass Through
• Sludge Criteria
– No EPA Criteria
– CTR?, Effluent Limit, WDR, Title 22
– No 503 Requirement, Federal HW? California HW - TTLC, STLC?
![Page 20: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/20.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
20
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Mass Balance - Chloride mg/L
R - 44.6C - ?I - 115
Cl2
E - 49S - ?
Headworks44 mg/L
![Page 21: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/21.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
21
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
TDS Local LimitsLimiting Criteria - Water Source + 400 mg/L
Approach:– Compute controlled and uncontrolled concentrations of TDS– Subtract (average, highest, lowest?) source water
concentration– Compute MAHL using 400 mg/L and WWTP influent flow– Subtract uncontrolled mass using (average, highest, lowest,
upper quartile, average + 1 SD) uncontrolled sources concentration
– Subtract safety factor– Allocate MAIHL to all Industrial Users
![Page 22: New Approaches to Developing Local Limits Industrial & Hazardous Waste Committee Meeting July 18, 2001 by Richard W. von Langen, P.E. New Approaches to](https://reader035.vdocuments.mx/reader035/viewer/2022062407/56649d175503460f949ed77c/html5/thumbnails/22.jpg)
New Approaches to Developing Local LimitsNew Approaches to Developing Local Limits
22
I&HW CommitteeI&HW CommitteeJuly 18, 2001July 18, 2001
Sensitivity Analysis
• NDs
• Variable Data
• Expansion Factor
• Allocation Method• TDS
– Calculate LL at different ND values; adjust headworks concentration to match mass balance
– Eliminate outliers; use geometric mean or median to calculate LL
– Vary; compare to Residential, Commercial, and Industrial Waste contributions
– Total versus contributory IU flows– Vary concentrations of source water,
and uncontrolled sources
Take a Global Perspective