Cal. Code Regs. Tit. 17, § 93102.16 - Appendices 1 Through 9
This section 93102.16 contains Appendices 1 through 9 to the ATCM for Chromium Electroplating and Chromic Acid Anodizing Operations.
Appendix 1
Submittals to CARB or the District.
All documentation submitted to CARB or the District pursuant to this ATCM shall:
1. Be
written in the English language;
2.
Contain the following statement of accuracy, signed by the Owner or Operator or
Responsible Official: "I certify under penalty of perjury under the laws of the
State of California that the information provided is true, accurate, and
complete."
3. All documentation
submitted to CARB pursuant to this ATCM shall be submitted by one of the
following methods:
a. Mailing to:
CHIEF, RISK REDUCTION BRANCH, TRANSPORTATION AND TOXICS DIVISION
CALIFORNIA AIR RESOURCES BOARD
1001 I STREET, SACRAMENTO, CA 95814
b. Emailing to:
chromeplatingatcm@arb.ca.gov.
4. All documentation submitted to the
District pursuant to this ATCM shall be submitted in accordance with the
District's procedures by one of the following methods:
a. Mailing to the address listed here:
https://ww2.arb.ca.gov/california-air-districts
b. Emailing to the email address designated
by the District.
Appendix 2
Content of Source Test Reports.
Source Test reports required by section 93102.13(a) shall contain the following information:
1.
A brief process description;
2.
Sampling location description(s);
3. A description of sampling and analytical
procedures and any modifications to standard procedures;
4. Test results in mg/Amp-Hr;
5. Quality assurance procedures and
results;
6. Records of operating
conditions during the test, preparation of standards, and calibration
procedures;
7. Original data for
field sampling and field and laboratory analyses;
8. Documentation of calculations;
and
9. Any other information
required by the test method.
Note: Test reports consistent with the provisions of CARB Method 425 will fulfill the above Source Test report content requirement.
Appendix 3
Content of Ongoing Compliance Status Reports.
Ongoing compliance status reports required by section 93102.13(b) shall contain the following information:
1.
Company Information: Facility name, address, Owner or Operator name, telephone
number, and the measured distance to the property boundary of the nearest
Sensitive Receptor. For Facilities that do not have an Add-on Air Pollution
Control Device, the measurement shall be the distance, rounded to the nearest
foot, from the edge of the Chrome Plating Tank nearest the Sensitive Receptor
to the property line of the nearest Sensitive Receptor. For Facilities with an
Add-on Air Pollution Control Device, the measurement shall be the distance,
rounded to the nearest foot, from the centroid of the stack to the property
line of the nearest Sensitive Receptor;
2. The relevant requirements for the
Facility, and the operating parameter value, or range of values, that
correspond to compliance as specified in the notification of initial compliance
status;
3. The actual cumulative
Ampere-Hour usage expended during the reporting period, on a month-by-month
basis, for the reporting period January 1 through December 31;
4. The actual Hexavalent Chromium emissions
of the Facility during the reporting period in pounds per year calculated by
multiplying the emission rate with the actual Ampere-Hour usage for the
reporting period;
5. A summary of
any excess emissions or exceeded monitoring parameters as identified in the
records required by section
93102.12(e);
6. A certification by a Responsible Official
that the inspection and maintenance requirements in section
93102.10 were followed in
accordance with the operation and maintenance plan for the Facility;
7. If the operation and maintenance plan
required by section
93102.11 was not followed, an
explanation of the reasons for not following the provisions, an assessment of
whether any excess emissions and/or monitoring parameter excesses are believed
to have occurred, and a copy of the record(s) required by section
93102.12(a)
documenting that the operation and maintenance plan was not followed;
8. A description of any changes in
monitoring, processes, or controls since the last reporting period;
9. A statement that the Owner or Operator, or
personnel designated by the Owner or Operator, has, within the last two years,
completed Environmental Compliance Training pursuant to section
93102.5(b);
10. The name, title, and signature of the
Responsible Official who is certifying the accuracy of the report;
and
11. The date of the
report.
Appendix 4
Smoke Test for Chrome Tank Covers.
SMOKE TEST TO VERIFY THE SEAL INTEGRITY OF COVERS DESIGNED TO REDUCE CHROMIUM EMISSIONS FROM CHROME PLATING TANKS
Applicability and Principle
1. Applicability. This alternative method is
applicable to all Hard Chrome Plating Operations where a Chrome Plating Tank
cover is used on the Tank for reducing Hexavalent Chromium emissions.
2. Principle. During Chrome Plating
Operations, bubbles of hydrogen and oxygen gas generated during the process
rise to the surface of the Tank liquid and burst. Upon bursting, tiny droplets
of Chromic Acid Mist become entrained in the air above the Tank. Because the
Chrome Plating Tank cover completely encloses the air above the Tank, the
Chromic Acid Mist either falls back into the solution because of gravity or
collects on the inside walls of the Chrome Plating Tank cover and runs back
into the solution. A semi-permeable membrane allows passage of the hydrogen and
oxygen out of the Chrome Plating Tank cover. A lit smoke device is placed
inside the Chrome Plating Tank cover to detect Leaks at the membrane, joints,
or seals.
Apparatus
3. Smoke device. Adequate to generate 500 to
1000 ft3 of smoke/20 ft2
of Tank surface area (e.g. Model #1A=15 SECONDS from Superior Signal, New
York).
4. Small container. To hold
the smoke device.
Procedure
5. Place the small container on a stable and
flat area at the center of the Chrome Plating Tank cover (you can use a board
and place it on the busbars). Place the smoke device inside the container.
After lighting the smoke device, quickly close the access door to avoid smoke
from escaping. Let the smoke device completely burn; the entire space under the
Chrome Plating Tank cover will now be filled with the smoke. Observe for Leaks
of smoke from each seal, joint, and membrane of the Chrome Plating Tank cover.
Record these observations, including the locations and a qualitative assessment
of any Leaks of smoke.
When all seals, joints, and membranes have been observed, evacuate the unit to remove the smoke from the Chrome Plating Tank cover.
Appendix 5
District Breakdown Rules.
| DISTRICT | RULE # | RULE NAME |
| Amador | 516 | Breakdown Conditions |
| Antelope | 430 | Breakdown Provisions |
| Bay Area | 1 | General Provisions and Definitions |
| Butte | 266 | Upset and Breakdown Conditions |
| Calaveras | 516 | Upset and Breakdown Conditions |
| Colusa | 266 | Upset and Breakdown Conditions |
| Eastern Kern | 111 | Equipment Breakdown |
| El Dorado | 516 | Upset Breakdown Conditions |
| Feather River | 9.6 | Equipment Breakdown |
| Glenn | 95.2 | Malfunction of Equipment |
| Great Basin | 403 | Breakdown |
| Imperial | 111 | Equipment Breakdown |
| Lake | Chapter III, Article II | Malfunction |
| Lassen | 4:22 | Breakdown Conditions |
| Mariposa | 516 | Upset and Breakdown Conditions |
| Mendocino | 1-540 | Equipment Breakdown |
| Modoc | 2.12 | Equipment Breakdown |
| Mojave | 430 | Breakdown Provisions |
| Monterey Bay | 214 | Breakdown Condition |
| North Coast | 105 | Enforcement & Penalty Actions: Section D - Equipment Breakdown |
| Northern Sierra | 516 | Upset and Breakdown Conditions |
| Northern Sonoma | 540 | Equipment Breakdown |
| Placer | 404 | Upset Conditions Breakdown. Scheduled Maintenance |
| Sacramento | 602 | Breakdown Conditions: Emergency Variance |
| San Diego | 98 | Breakdown Conditions: Emergency Variance |
| San Joaquin | 1100 | Equipment Breakdown |
| San Luis Obispo | 107 | Breakdown or Upset Conditions and Emergency Variances |
| Santa Barbara | 505 | Breakdown Conditions |
| Santa Barbara | 506 | Emergency Variances for Breakdowns |
| Shasta | 3:10 | Excess Emissions |
| Siskiyou | 2.12 | Equipment Breakdown (Siskiyou) |
| South Coast | 430 | Breakdown Provisions |
| South Coast | 517 | Emergency Variance Procedures -- Breakdowns |
| Tehama | 4:17 | Upset or Breakdown Conditions |
| Tuolumne | 516 | Upset and Breakdown Conditions |
| Ventura | 32 | Breakdown Conditions; Emergency Variances |
| Yolo Solano | 5.2 | Upset/Breakdown Conditions: Emergency Variance |
Appendix 6
Alternative Requirements for Enclosed Hexavalent Chromium Plating Tanks -- Mass Emission Rate Calculation Procedure.
Mass Emission Rate shall be calculated using the following equation:
MAMER = ETSA x K x 0.015 mg/dscm
Where:
MAMER = the alternative emission rate for Enclosed Hexavalent Chromium Plating Tanks in mg/hr.
ETSA = the Hexavalent Chromium Plating Tank surface area in square feet (ft2).
K = a conversion factor, 425 dscm/(ft2x hr).
Appendix 7
Surface Tension Procedure for a Stalagmometer.
The Stalagmometer must first be properly cleaned before being used for the first time and after a period of storage. Properly clean the Stalagmometer using the following procedure:
1. Set up the Stalagmometer, in its stand,
inside of a fume hood.
2. Place a
clean 150 mL beaker underneath the Stalagmometer, then fill with reagent grade
concentrated nitric acid. Immerse bottom tip (approximately ½") of the
Stalagmometer into the beaker.
3.
Squeeze rubber bulb and pinch at the arrow up (1) position to collapse. Place
bulb end securely on top end of the Stalagmometer. Carefully draw the nitric
acid by pinching the arrow up (1) position until the level is above the top
etched line.
4. Allow nitric acid
to remain in the Stalagmometer for 5 minutes and then carefully remove the
bulb, allowing the acid to completely drain.
5. Fill a clean 150 mL beaker with distilled
or deionized water. Using the rubber bulb per the instructions in Step #3,
rinse and drain the Stalagmometer with deionized or distilled water until the
inside is "water break" free.
6.
Fill a clean 150 mL beaker with isopropyl alcohol. Again, using the rubber bulb
per Step #3, rinse and drain the Stalagmometer twice with isopropyl alcohol and
allow the Stalagmometer to dry completely.
7. Take a sample of the solution to be tested
and adjust the solution to room temperature. Measure the specific gravity and
record the reading.
8. Fill a clean
150 mL beaker with the solution to be tested. Immerse the bottom end of the
Stalagmometer into the beaker. Fill the Stalagmometer per the instructions in
Step #3, making sure that the solution level is above the top etched
line.
9. Raise the Stalagmometer so
that the bottom end is completely out of solution. Remove bulb and immediately
place a finger on the top end of the Stalagmometer. Carefully use the finger to
bring the solution level down to the top etched line. Do not release the finger
at this time.
10. "Wipe" the excess
solution on the lower tip by touching it against the side of the
beaker.
11. Release fingertip to
allow solution to drain and count the number of drops until the level reaches
the bottom etched line.
Calculations for Surface Tension
(Surface tension (dynes/cm) = Sw * Nw * D)/(N * Dw)
Sw = Surface tension of water at 25°C or 77°F (72.75 dynes/cm)
Nw = water drop number etched on instrument
D = measured specific gravity (g/ml)
N = # of solution drops
Dw = water density (1.0 g/mL)
PRECAUTIONS:
1. Make sure the stalagmometer is clean (no
sludge or film)
2. No chips, cracks,
etc
3. Vertical placement
4. No vibration
5. 20 drops per minute rate (10 dynes/cm) +/-
1 drop per minute
6. Performance
checked with water. The number of drops etched on the instrument shall be
verified with deionized water to +/- 1 drop. If the number of drops are not
within 1 drop, then the Stalagmometer shall be cleaned. If the cleaning process
does not bring the drop count within 1 drop of the etched number on the
instrument, then the operator shall:
a)
Purchase a new Stalagmometer; or
b)
Use the number of drops recorded for the distilled water run as (Nw) in the
equation instead of the number of drops etched on the Stalagmometer.
7. Sample at room
temperature
Appendix 8
Information to be Submitted to the District when Requesting Alternative Method(s) of Compliance Pursuant to Section 93102.14.
The Owner or Operator of a Facility applying for approval of an alternative method of compliance must submit to the District the following information:
1. The specific
requirement(s) in Table 93102.4 related to Chemical Fume Suppressants or in
section 93102.4(f)(2)
that the Owner or Operator is proposing to replace with alternative method(s)
of compliance.
2. A demonstration
that the alternative method(s) will achieve an equal or greater amount of
reductions in Hexavalent Chromium emissions than would be achieved with direct
compliance with the requirement(s) that the alternative method(s) seek to
replace.
3. Calculations based on
scientifically valid risk assessment methodologies demonstrating that the
alternative method(s) result in reducing risk equally or greater than the risk
reduction that would be achieved by direct compliance with the requirement(s)
that the alternative method(s) seek to replace.
4. Documentation which demonstrates that the
reductions to be achieved by each of the alternative compliance methods
included in the request are Enforceable, including an operation and maintenance
plan, an inspection and maintenance schedule, a recordkeeping plan, and a
proposed method of verification (e.g. a Source Test) for each alternative
method of compliance.
5. Proposed
timeline for implementation of each alternative method(s) of
compliance.
Appendix 9
Tier II and Tier Ill Hexavalent Chromium Tank Thresholds.
1. To be considered
a Tier II Tank, Hexavalent Chromium concentrations must remain in the range
listed in the second column of the table below for the specified temperature. A
Tank that exceeds the applicable Hexavalent Chromium concentration for Tier II
tanks shall be considered a Tier III Tank.
| Temperature (° F) | Tier II Tank Hexavalent Chromium Concentration (ppm) | Tier III Tank Hexavalent Chromium Concentration (ppm) |
| 140 to <145° F | 5,200 to <10,400 | [GREATER THAN EQUAL TO]10,400 |
| 145 to <150° F | 2,700 to <5,500 | [GREATER THAN EQUAL TO]5,500 |
| 150 to <155° F | 1,400 to <2,900 | [GREATER THAN EQUAL TO]2,900 |
| 155 to <160° F | 700 to <1,600 | [GREATER THAN EQUAL TO]1,600 |
| 160 to <165° F | 400 to <800 | [GREATER THAN EQUAL TO]800 |
| 165 to <170° F | 180 to <400 | [GREATER THAN EQUAL TO]400 |
| [GREATER THAN EQUAL TO]170° F | [GREATER THAN EQUAL TO]100 to <200 | [GREATER THAN EQUAL TO]200 |
2.
Chrome Plating Tanks with Hexavalent Chromium concentration greater than 1,000
ppm shall be considered a Tier III Tank regardless of operating
temperature.
3. Air sparged Tanks
with a Hexavalent Chromium concentration greater than 1,000 ppm shall be
considered a Tier III Tank regardless of operating temperature.
4. One Tier III Tank at a Facility shall not
be subject to the requirement in section
93102.4(f)(2) to
vent a Tier III Tank to an Add-on Air Pollution Control Device if the Tank
meets the following requirements:
a) The
surface area is less than or equal to four square feet;
b) The Hexavalent Chromium concentration is
less than or equal to 11,000 ppm;
c) The Tank is operated and permitted at less
than or equal to 210° F;
d) The
Tank is operated at a temperature between 170-210° F for less than or equal
to two and one-half (2.5) hours per week with a temperature data logger logging
the duration of time and temperature of the tank; and
e) The Tank complies with the Tank cover
requirements in section
93102.4(f).
Notes
Note: Authority cited: Sections 39600, 39601, 39650, 39658, 39659, 39666 and 41511, Health and Safety Code. Reference: Sections 39650, 39658, 39659, 39665, 39666 and 41511, Health and Safety Code; and 40 CFR Part 63 Subpart N.
Note: Authority cited: Sections 39600, 39601, 39650, 39658, 39659, 39666 and 41511, Health and Safety Code. Reference: Sections 39650, 39658, 39659, 39665, 39666 and 41511, Health and Safety Code; and 40 CFR Part 63 Subpart N.
2. Amendment of section, new appendix 1, renumbering and amendment of former appendix 1 to appendix 2, repealer of appendices 2 and 4, amendment of appendix 3, renumbering and amendment of newly designated appendices 4-8 and new appendix 9 filed 12-28-2023; operative
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
This section 93102.16 contains Appendices 1 through 9 to the ATCM for Chromium Electroplating and Chromic Acid Anodizing Operations.
Appendix 1
Submittals to CARB or the District.
All documentation submitted to CARB or the District pursuant to this ATCM shall:
1. Be written in the English language;
2. Contain the following statement of accuracy, signed by the Owner or Operator or Responsible Official: "I certify under penalty of perjury under the laws of the State of California that the information provided is true, accurate, and complete."
3. All documentation submitted to CARB pursuant to this ATCM shall be submitted by one of the following methods:
a. Mailing to:
CHIEF, RISK REDUCTION BRANCH, TRANSPORTATION AND TOXICS DIVISION
CALIFORNIA AIR RESOURCES BOARD
1001 I STREET, SACRAMENTO, CA 95814
b. Emailing to: chromeplatingatcm@arb.ca.gov.
4. All documentation submitted to the District pursuant to this ATCM shall be submitted in accordance with the District's procedures by one of the following methods:
a. Mailing to the address listed here: https://ww2.arb.ca.gov/california-air-districts
b. Emailing to the email address designated by the District.
Appendix 2
Content of Source Test Reports.
Source Test reports required by section 93102.13(a) shall contain the following information:
1. A brief process description;
2. Sampling location description(s);
3. A description of sampling and analytical procedures and any modifications to standard procedures;
4. Test results in mg/Amp-Hr;
5. Quality assurance procedures and results;
6. Records of operating conditions during the test, preparation of standards, and calibration procedures;
7. Original data for field sampling and field and laboratory analyses;
8. Documentation of calculations; and
9. Any other information required by the test method.
Note: Test reports consistent with the provisions of CARB Method 425 will fulfill the above Source Test report content requirement.
Appendix 3
Content of Ongoing Compliance Status Reports.
Ongoing compliance status reports required by section 93102.13(b) shall contain the following information:
1. Company Information: Facility name, address, Owner or Operator name, telephone number, and the measured distance to the property boundary of the nearest Sensitive Receptor. For Facilities that do not have an Add-on Air Pollution Control Device, the measurement shall be the distance, rounded to the nearest foot, from the edge of the Chrome Plating Tank nearest the Sensitive Receptor to the property line of the nearest Sensitive Receptor. For Facilities with an Add-on Air Pollution Control Device, the measurement shall be the distance, rounded to the nearest foot, from the centroid of the stack to the property line of the nearest Sensitive Receptor;
2. The relevant requirements for the Facility, and the operating parameter value, or range of values, that correspond to compliance as specified in the notification of initial compliance status;
3. The actual cumulative Ampere-Hour usage expended during the reporting period, on a month-by-month basis, for the reporting period January 1 through December 31;
4. The actual Hexavalent Chromium emissions of the Facility during the reporting period in pounds per year calculated by multiplying the emission rate with the actual Ampere-Hour usage for the reporting period;
5. A summary of any excess emissions or exceeded monitoring parameters as identified in the records required by section 93102.12(e);
6. A certification by a Responsible Official that the inspection and maintenance requirements in section 93102.10 were followed in accordance with the operation and maintenance plan for the Facility;
7. If the operation and maintenance plan required by section 93102.11 was not followed, an explanation of the reasons for not following the provisions, an assessment of whether any excess emissions and/or monitoring parameter excesses are believed to have occurred, and a copy of the record(s) required by section 93102.12(a) documenting that the operation and maintenance plan was not followed;
8. A description of any changes in monitoring, processes, or controls since the last reporting period;
9. A statement that the Owner or Operator, or personnel designated by the Owner or Operator, has, within the last two years, completed Environmental Compliance Training pursuant to section 93102.5(b);
10. The name, title, and signature of the Responsible Official who is certifying the accuracy of the report; and
11. The date of the report.
Appendix 4
Smoke Test for Chrome Tank Covers.
SMOKE TEST TO VERIFY THE SEAL INTEGRITY OF COVERS DESIGNED TO REDUCE CHROMIUM EMISSIONS FROM CHROME PLATING TANKS
Applicability and Principle
1. Applicability. This alternative method is applicable to all Hard Chrome Plating Operations where a Chrome Plating Tank cover is used on the Tank for reducing Hexavalent Chromium emissions.
2. Principle. During Chrome Plating Operations, bubbles of hydrogen and oxygen gas generated during the process rise to the surface of the Tank liquid and burst. Upon bursting, tiny droplets of Chromic Acid Mist become entrained in the air above the Tank. Because the Chrome Plating Tank cover completely encloses the air above the Tank, the Chromic Acid Mist either falls back into the solution because of gravity or collects on the inside walls of the Chrome Plating Tank cover and runs back into the solution. A semi-permeable membrane allows passage of the hydrogen and oxygen out of the Chrome Plating Tank cover. A lit smoke device is placed inside the Chrome Plating Tank cover to detect Leaks at the membrane, joints, or seals.
Apparatus
3. Smoke device. Adequate to generate 500 to 1000 ft3 of smoke/20 ft2 of Tank surface area (e.g. Model #1A=15 SECONDS from Superior Signal, New York).
4. Small container. To hold the smoke device.
Procedure
5. Place the small container on a stable and flat area at the center of the Chrome Plating Tank cover (you can use a board and place it on the busbars). Place the smoke device inside the container. After lighting the smoke device, quickly close the access door to avoid smoke from escaping. Let the smoke device completely burn; the entire space under the Chrome Plating Tank cover will now be filled with the smoke. Observe for Leaks of smoke from each seal, joint, and membrane of the Chrome Plating Tank cover. Record these observations, including the locations and a qualitative assessment of any Leaks of smoke.
When all seals, joints, and membranes have been observed, evacuate the unit to remove the smoke from the Chrome Plating Tank cover.
Appendix 5
District Breakdown Rules.
| DISTRICT | RULE # | RULE NAME |
| Amador | 516 | Breakdown Conditions |
| Antelope | 430 | Breakdown Provisions |
| Bay Area | 1 | General Provisions and Definitions |
| Butte | 266 | Upset and Breakdown Conditions |
| Calaveras | 516 | Upset and Breakdown Conditions |
| Colusa | 266 | Upset and Breakdown Conditions |
| Eastern Kern | 111 | Equipment Breakdown |
| El Dorado | 516 | Upset Breakdown Conditions |
| Feather River | 9.6 | Equipment Breakdown |
| Glenn | 95.2 | Malfunction of Equipment |
| Great Basin | 403 | Breakdown |
| Imperial | 111 | Equipment Breakdown |
| Lake | Chapter III, Article II | Malfunction |
| Lassen | 4:22 | Breakdown Conditions |
| Mariposa | 516 | Upset and Breakdown Conditions |
| Mendocino | 1-540 | Equipment Breakdown |
| Modoc | 2.12 | Equipment Breakdown |
| Mojave | 430 | Breakdown Provisions |
| Monterey Bay | 214 | Breakdown Condition |
| North Coast | 105 | Enforcement & Penalty Actions: Section D - Equipment Breakdown |
| Northern Sierra | 516 | Upset and Breakdown Conditions |
| Northern Sonoma | 540 | Equipment Breakdown |
| Placer | 404 | Upset Conditions Breakdown. Scheduled Maintenance |
| Sacramento | 602 | Breakdown Conditions: Emergency Variance |
| San Diego | 98 | Breakdown Conditions: Emergency Variance |
| San Joaquin | 1100 | Equipment Breakdown |
| San Luis Obispo | 107 | Breakdown or Upset Conditions and Emergency Variances |
| Santa Barbara | 505 | Breakdown Conditions |
| Santa Barbara | 506 | Emergency Variances for Breakdowns |
| Shasta | 3:10 | Excess Emissions |
| Siskiyou | 2.12 | Equipment Breakdown (Siskiyou) |
| South Coast | 430 | Breakdown Provisions |
| South Coast | 517 | Emergency Variance Procedures -- Breakdowns |
| Tehama | 4:17 | Upset or Breakdown Conditions |
| Tuolumne | 516 | Upset and Breakdown Conditions |
| Ventura | 32 | Breakdown Conditions; Emergency Variances |
| Yolo Solano | 5.2 | Upset/Breakdown Conditions: Emergency Variance |
Appendix 6
Alternative Requirements for Enclosed Hexavalent Chromium Plating Tanks -- Mass Emission Rate Calculation Procedure.
Mass Emission Rate shall be calculated using the following equation:
MAMER = ETSA x K x 0.015 mg/dscm
Where:
MAMER = the alternative emission rate for Enclosed Hexavalent Chromium Plating Tanks in mg/hr.
ETSA = the Hexavalent Chromium Plating Tank surface area in square feet (ft2).
K = a conversion factor, 425 dscm/(ft2x hr).
Appendix 7
Surface Tension Procedure for a Stalagmometer.
The Stalagmometer must first be properly cleaned before being used for the first time and after a period of storage. Properly clean the Stalagmometer using the following procedure:
1. Set up the Stalagmometer, in its stand, inside of a fume hood.
2. Place a clean 150 mL beaker underneath the Stalagmometer, then fill with reagent grade concentrated nitric acid. Immerse bottom tip (approximately ½") of the Stalagmometer into the beaker.
3. Squeeze rubber bulb and pinch at the arrow up (1) position to collapse. Place bulb end securely on top end of the Stalagmometer. Carefully draw the nitric acid by pinching the arrow up (1) position until the level is above the top etched line.
4. Allow nitric acid to remain in the Stalagmometer for 5 minutes and then carefully remove the bulb, allowing the acid to completely drain.
5. Fill a clean 150 mL beaker with distilled or deionized water. Using the rubber bulb per the instructions in Step #3, rinse and drain the Stalagmometer with deionized or distilled water until the inside is "water break" free.
6. Fill a clean 150 mL beaker with isopropyl alcohol. Again, using the rubber bulb per Step #3, rinse and drain the Stalagmometer twice with isopropyl alcohol and allow the Stalagmometer to dry completely.
7. Take a sample of the solution to be tested and adjust the solution to room temperature. Measure the specific gravity and record the reading.
8. Fill a clean 150 mL beaker with the solution to be tested. Immerse the bottom end of the Stalagmometer into the beaker. Fill the Stalagmometer per the instructions in Step #3, making sure that the solution level is above the top etched line.
9. Raise the Stalagmometer so that the bottom end is completely out of solution. Remove bulb and immediately place a finger on the top end of the Stalagmometer. Carefully use the finger to bring the solution level down to the top etched line. Do not release the finger at this time.
10. "Wipe" the excess solution on the lower tip by touching it against the side of the beaker.
11. Release fingertip to allow solution to drain and count the number of drops until the level reaches the bottom etched line.
Calculations for Surface Tension
(Surface tension (dynes/cm) = Sw * Nw * D)/(N * Dw)
Sw = Surface tension of water at 25°C or 77°F (72.75 dynes/cm)
Nw = water drop number etched on instrument
D = measured specific gravity (g/ml)
N = # of solution drops
Dw = water density (1.0 g/mL)
PRECAUTIONS:
1. Make sure the stalagmometer is clean (no sludge or film)
2. No chips, cracks, etc
3. Vertical placement
4. No vibration
5. 20 drops per minute rate (10 dynes/cm) +/- 1 drop per minute
6. Performance checked with water. The number of drops etched on the instrument shall be verified with deionized water to +/- 1 drop. If the number of drops are not within 1 drop, then the Stalagmometer shall be cleaned. If the cleaning process does not bring the drop count within 1 drop of the etched number on the instrument, then the operator shall:
a) Purchase a new Stalagmometer; or
b) Use the number of drops recorded for the distilled water run as (Nw) in the equation instead of the number of drops etched on the Stalagmometer.
7. Sample at room temperature
Appendix 8
Information to be Submitted to the District when Requesting Alternative Method(s) of Compliance Pursuant to Section 93102.14.
The Owner or Operator of a Facility applying for approval of an alternative method of compliance must submit to the District the following information:
1. The specific requirement(s) in Table 93102.4 related to Chemical Fume Suppressants or in section 93102.4(f)(2) that the Owner or Operator is proposing to replace with alternative method(s) of compliance.
2. A demonstration that the alternative method(s) will achieve an equal or greater amount of reductions in Hexavalent Chromium emissions than would be achieved with direct compliance with the requirement(s) that the alternative method(s) seek to replace.
3. Calculations based on scientifically valid risk assessment methodologies demonstrating that the alternative method(s) result in reducing risk equally or greater than the risk reduction that would be achieved by direct compliance with the requirement(s) that the alternative method(s) seek to replace.
4. Documentation which demonstrates that the reductions to be achieved by each of the alternative compliance methods included in the request are Enforceable, including an operation and maintenance plan, an inspection and maintenance schedule, a recordkeeping plan, and a proposed method of verification (e.g. a Source Test) for each alternative method of compliance.
5. Proposed timeline for implementation of each alternative method(s) of compliance.
Appendix 9
Tier II and Tier Ill Hexavalent Chromium Tank Thresholds.
1. To be considered a Tier II Tank, Hexavalent Chromium concentrations must remain in the range listed in the second column of the table below for the specified temperature. A Tank that exceeds the applicable Hexavalent Chromium concentration for Tier II tanks shall be considered a Tier III Tank.
| Temperature (° F) | Tier II Tank Hexavalent Chromium Concentration (ppm) | Tier III Tank Hexavalent Chromium Concentration (ppm) |
| 140 to <145° F | 5,200 to <10,400 | [GREATER THAN EQUAL TO]10,400 |
| 145 to <150° F | 2,700 to <5,500 | [GREATER THAN EQUAL TO]5,500 |
| 150 to <155° F | 1,400 to <2,900 | [GREATER THAN EQUAL TO]2,900 |
| 155 to <160° F | 700 to <1,600 | [GREATER THAN EQUAL TO]1,600 |
| 160 to <165° F | 400 to <800 | [GREATER THAN EQUAL TO]800 |
| 165 to <170° F | 180 to <400 | [GREATER THAN EQUAL TO]400 |
| [GREATER THAN EQUAL TO]170° F | [GREATER THAN EQUAL TO]100 to <200 | [GREATER THAN EQUAL TO]200 |
2. Chrome Plating Tanks with Hexavalent Chromium concentration greater than 1,000 ppm shall be considered a Tier III Tank regardless of operating temperature.
3. Air sparged Tanks with a Hexavalent Chromium concentration greater than 1,000 ppm shall be considered a Tier III Tank regardless of operating temperature.
4. One Tier III Tank at a Facility shall not be subject to the requirement in section 93102.4(f)(2) to vent a Tier III Tank to an Add-on Air Pollution Control Device if the Tank meets the following requirements:
a) The surface area is less than or equal to four square feet;
b) The Hexavalent Chromium concentration is less than or equal to 11,000 ppm;
c) The Tank is operated and permitted at less than or equal to 210° F;
d) The Tank is operated at a temperature between 170-210° F for less than or equal to two and one-half (2.5) hours per week with a temperature data logger logging the duration of time and temperature of the tank; and
e) The Tank complies with the Tank cover requirements in section 93102.4(f).
Notes
Note: Authority cited: Sections 39600, 39601, 39650, 39658, 39659, 39666 and 41511, Health and Safety Code. Reference: Sections 39650, 39658, 39659, 39665, 39666 and 41511, Health and Safety Code; and 40 CFR Part 63 Subpart N.
Note: Authority cited: Sections 39600, 39601, 39650, 39658, 39659, 39666 and 41511, Health and Safety Code. Reference: Sections 39650, 39658, 39659, 39665, 39666 and 41511, Health and Safety Code; and 40 CFR Part 63 Subpart N.
2. Amendment of section, new appendix 1, renumbering and amendment of former appendix 1 to appendix 2, repealer of appendices 2 and 4, amendment of appendix 3, renumbering and amendment of newly designated appendices 4-8 and new appendix 9 filed 12-28-2023; operative