Form SFN54272 "Long Term 1 - Enhanced Surface Water Treatment Rule Summary" - North Dakota

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Released on February 1, 2019;
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Download Form SFN54272 "Long Term 1 - Enhanced Surface Water Treatment Rule Summary" - North Dakota

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LONG TERM 1 – ENHANCED SURFACE WATER TREATMENT RULE SUMMARY

DEPARTMENT OF ENVIRONMENTAL QUALITY

DIVISION OF MUNICIPAL FACILITIES

SFN 54272 (2-19)

Public Water System (PWS) Name:

PWS Number: (ex: ND1234567)

N D

Report for the Month of:

Operator’s Signature

Treatment Plant Performance (Section A)

Subsection 1 – Combined Filter Effluent Turbidity

Maximum allowable Turbidity Level:

_____

NTU

Exceedance of Maximum Turbidity

Total number of daily turbidity samples required during the month:

_____

Date

Time

Turbidity (NTU)

Total number of daily turbidity samples taken during the month:

_____

Percentage of readings that met allowable turbidity level:

_____

Number of days with readings above 1.0 NTU

_____

Day(s)

(Conventional and Direct Filtration Technology)

Number of days with readings above 5.0 NTU

_____

Day(s)

Write “NONE” in box if no exceedance

(Slow sand and diatomaceous Earth Filtration Technology)

Highest single turbidity reading recorded during the month.

_____

NTU

Subsection 2 – Individual Filter Monitoring Data

N/A 

Filter Profile 

Filter Self-Assessment  CPE 

Exception Report(s) for Individual Filter Monitoring:

N/A 

Filter Profile 

Filter Self-Assessment  CPE 

Exception Report(s) for Individual Filter Monitoring submitted:

Yes 

N/A 

Is a written explanation describing that an exceedance was caused

by an obvious reason required in lieu of a filter profile?

Subsection 3 – Total Organic Carbon (TOC) Removal Monitoring Data

Yes 

No 

Is system on reduced monitoring:

Required TOC removal:

_____________ %

(column D from “TOC removal worksheet)

Actual TOC removed by the plant:

_____________ %

(column E from “TOC removal worksheet)

Ratio of TOC removed to required TOC Removal:

_____________

(column F from “TOC removal worksheet)

Subsection 4 – Point-of-Entry (POE) Disinfectant Residual Monitoring Data

Type of final disinfectant used:

___________________________

Total number of daily POE disinfectant residual samples required for the month:

_______

Total number of POE disinfectant residual samples taken during the month:

_______

Total number of POE disinfectant residual samples under 0.2 mg/L measured

_______

during the month:

Range of POE disinfectant residual entering the distribution system each month:

Low _______ mg/L

High _______ mg/L

Average of the lowest POE disinfectant residual measurements entering the

_______ mg/L

distribution system each month is

Summary of Low Point-of-Entry Residual Events

Date

Duration of Low Residual

Date/Time Division Contacted

Date/Time

Date/Time Division Contacted

Event (Hours)

Regarding Low Residual Event

Residual

Regarding Restoration of Residual

Restored

LONG TERM 1 – ENHANCED SURFACE WATER TREATMENT RULE SUMMARY

DEPARTMENT OF ENVIRONMENTAL QUALITY

DIVISION OF MUNICIPAL FACILITIES

SFN 54272 (2-19)

Public Water System (PWS) Name:

PWS Number: (ex: ND1234567)

N D

Report for the Month of:

Operator’s Signature

Treatment Plant Performance (Section A)

Subsection 1 – Combined Filter Effluent Turbidity

Maximum allowable Turbidity Level:

_____

NTU

Exceedance of Maximum Turbidity

Total number of daily turbidity samples required during the month:

_____

Date

Time

Turbidity (NTU)

Total number of daily turbidity samples taken during the month:

_____

Percentage of readings that met allowable turbidity level:

_____

Number of days with readings above 1.0 NTU

_____

Day(s)

(Conventional and Direct Filtration Technology)

Number of days with readings above 5.0 NTU

_____

Day(s)

Write “NONE” in box if no exceedance

(Slow sand and diatomaceous Earth Filtration Technology)

Highest single turbidity reading recorded during the month.

_____

NTU

Subsection 2 – Individual Filter Monitoring Data

N/A 

Filter Profile 

Filter Self-Assessment  CPE 

Exception Report(s) for Individual Filter Monitoring:

N/A 

Filter Profile 

Filter Self-Assessment  CPE 

Exception Report(s) for Individual Filter Monitoring submitted:

Yes 

N/A 

Is a written explanation describing that an exceedance was caused

by an obvious reason required in lieu of a filter profile?

Subsection 3 – Total Organic Carbon (TOC) Removal Monitoring Data

Yes 

No 

Is system on reduced monitoring:

Required TOC removal:

_____________ %

(column D from “TOC removal worksheet)

Actual TOC removed by the plant:

_____________ %

(column E from “TOC removal worksheet)

Ratio of TOC removed to required TOC Removal:

_____________

(column F from “TOC removal worksheet)

Subsection 4 – Point-of-Entry (POE) Disinfectant Residual Monitoring Data

Type of final disinfectant used:

___________________________

Total number of daily POE disinfectant residual samples required for the month:

_______

Total number of POE disinfectant residual samples taken during the month:

_______

Total number of POE disinfectant residual samples under 0.2 mg/L measured

_______

during the month:

Range of POE disinfectant residual entering the distribution system each month:

Low _______ mg/L

High _______ mg/L

Average of the lowest POE disinfectant residual measurements entering the

_______ mg/L

distribution system each month is

Summary of Low Point-of-Entry Residual Events

Date

Duration of Low Residual

Date/Time Division Contacted

Date/Time

Date/Time Division Contacted

Event (Hours)

Regarding Low Residual Event

Residual

Regarding Restoration of Residual

Restored

SFN 54272 (2-19)

Page 2 of 2

Distribution System (Section B)

Free Chlorine 

Total Chlorine 

Minimum disinfectant residual required in the distribution system at each

bacteriological site = Trace as:

Total number of distribution system disinfectant residual readings required during the month:

____________

Total number of distribution system disinfectant residual readings taken during the month:

____________

Total number of readings taken during the month that showed no detectable residual:

____________

Percentage of readings with no residual detected this month:

____________ %

Percentage of readings with no residual detected last month:

____________ %

Public Notification (Section C)

Treatment Technique Violation

Yes/No

If yes, dates when notice was given to:

This Department*

Customers**

Yes  No 

Were the percentages of readings that met allowable

turbidity level less than 95.0% - Line 4 subsection 1

Treatment Plant Performance Summary Section A

Yes  No 

Were there any days with turbidity readings above 1.0 NTU

(conventional or direct filtration)? - Line 5 subsection 1

Treatment Plant Performance Summary Section A

Yes  No 

Were there any days with turbidity readings above 5.0 NTU

(diatomaceous earth or slow sand filtration)? - Line 6

subsection 1 Treatment Plant Performance Summary

Section A

Yes  No 

Were there any periods when the residuals leaving the plant

fell below the acceptable level for more than 4 consecutive

hours? - Line 4 subsection 4 Treatment Plant

Performance Summary Section A

Yes  No 

Were there more than 5.0% of the residuals in the

distribution system below the acceptable level for any two

consecutive months in a row? - Lines 5 & 6 Distribution

System Section B

Due by the end of the next business day

** Copies of each public notice must accompany this report

Note: When issuing notice to the Department about the exceedance of maximum turbidity limits, or

low point-of-entry residual events, systems must include: date(s), time(s), value(s), and

duration(s) for ALL MEASUREMENTS (see Instructions For Completing The Enhanced

Surface Water Treatment Rule Data Recording Forms - Sections 1 and 4).

Submit the following forms by the 10th of the following month to the address below:

Enhanced Surface Water Treatment Rule-Summary Form

Combined Filter Effluent Turbidity

Individual Filter Turbidity Monitoring Data-Summary Form

Exceptions Report for Individual Filter Monitoring (if required)

Point-of-Entry Disinfectant Residual Monitoring Data,

Distribution System Disinfectant Residual Monitoring Data

Division of Municipal Facilities

918 E. Divide Ave., 3rd Floor

Bismarck, ND 58501-1947

Telephone Number 701-328-5211

Fax Number 701-328-5200

https://deq.nd.gov/mf

INSTRUCTIONS FOR COMPLETING THE

LONG TERM 1-ENHANCED SURFACE WATER TREATMENT RULE (LT1-ESWTR)

DATA RECORDING FORMS

NOTE: The BOLDED section and subsection letters and numbers correspond to the LT1-ESWTR Summary

Form. The italicized and underlined titles refer to the individual recording forms. Information recorded

daily on these forms will be calculated at the end of each month and transferred the LT1-ESWTR

Summary Form. The numbers under each form title (on this document) correspond to the numbers

within parenthesis on the respective data recording forms.

Section A Subsection 1 Combined Filter Effluent Turbidity

1. Identify the filtration technology used as follows: C (conventional = coagulation, flocculation,

sedimentation, filtration); D (direct = coagulation, filtration, no sedimentation); SS (slow sand); DE

(diatomaceous earth); or OTHER (specify).

2. For compliance purposes, systems may monitor plant reservoir effluent, clearwell effluent, or combined

filter effluent. Identify combined filter turbidity sampling location as follows:

PRE = plant reservoir effluent (all filters contribute to a common reservoir).

PRE-FILTER NOS. (specify) = plant reservoir effluent (covers only certain filters).

CE = clearwell effluent (all filters contribute to a common clearwell).

CE-FILTER NOS. (specify) = combined filter effluent (covers only certain filters).

CFE = combined filter effluent prior to clearwell entry (covers all filters)

CFE-FILTER NOS. = (specify) combined filter effluent prior to clearwell entry (covers only

certain filters).

Systems choosing to monitor PRE or CE need sample only one location if the effluent from all filters

contributes to a common plant reservoir or clearwell. Likewise, systems choosing to monitor CFE need

sample from only one location if the effluent from all filters contributes to a common line prior to

clearwell entry. Please remember that the sampling tap must be located on the common line

downstream of all individual filter effluent lines. If it is not, multiple monitoring sites will be required.

3. Systems that operate continuously may monitor filtered water turbidity by grab sample or utilize

continuous monitoring-recording equipment. Continuous recording is recommended but not required for

monitoring of PRE, CE, and CFE. Continuous operation means nonstop operation (for any number of

hours up to and including 24 hours) with no sporadic or intermittent operation during any part of the day

based strictly on demand. Systems conducting grab sample monitoring must measure the finished

water turbidity every 4 hours that the plant is in operation.

Systems utilizing continuous monitoring-recording equipment must report the actual reading (from the

continuous monitor or recorder) every 4 hours that the plant is in operation. All systems that operate

continuously, regardless of the monitoring method, must measure (or read) and report the final filtered

water turbidity just prior to plant shutdown. This final turbidity reading is not required if shutdown occurs

within 30 minutes after a 4-hour reading.

Systems that operate intermittently (i.e., sporadically during any part of the day based on demand)

must continuously monitor and record the filtered water turbidity. Remember, continuous recording is

required in this situation. Such systems must report the actual reading (from the continuous recorder)

every 4 hours that the plant is in operation. The closest reading (in time) to the required 4-hour reading

must be reported for each 4-hour interval that the plant did not run continuously.

Page 1 of 9

All systems utilizing continuous monitoring equipment must calibrate the continuous turbidity monitor(s) at least

once per week according to the procedures established in Method 2130 B of the 17

edition of Standard

Methods for the Examination of Water and Wastewater. For more information, see the Department’s

general policy regarding the calibration of turbidimeters and chlorine residual monitoring equipment

for the Safe Drinking Water Act’s Surface Water Treatment Rule.

Record the time of day under the appropriate time slot that the filtered water turbidity was measured or

read from the continuous monitor or recorder. Include an “-F” after the time for final turbidity readings

just prior to plant shutdown (i.e., 5:00-F). Shutdown readings may be recorded in the next available

time slot as long as an “-F” follows the time for clarity (i.e., if 4-hour and shutdown readings are taken at

4:15 PM and 7:00 PM, respectively, record the 4-hour reading under the 4 PM to 8 PM slot and the

shutdown reading, 7:00-F, under the 8 PM to 12:00 M time slot). If a plant did not operate during the 4-

hour interval, record “NO” for no operation under the appropriate time slot. For clarity, include a zero in

front of the decimal point for all turbidity readings less than 1.0 NTU (i.e., 0.5, 0.4, etc.). Each turbidity

reading must be followed (in the space provided) by the initials of the person who performed the

measurement.

4. Record the total number of turbidity measurements required to be taken during each day of operation.

5. For each day of operation, record the total number of turbidity measurements that were less than or

equal to 0.3 NTU if conventional or direct filtration is used, or 1 NTU if slow sand, diatomaceous earth

filtration, or alternate filtration technology approved by the Department is used. At least 95% of the

measurements taken each month must be less than or equal to the applicable limit. The Department

may specify alternate turbidity limits, in which case the number of turbidity measurements meeting

these limits must be recorded.

Record the maximum allowable turbidity limit allowed for the type of filtration technology used by your

water treatment plant on the LT1-ESWTR Summary Form Section A, subsection 1 (Combined Filter

Effluent Turbidity) line 1.

Record the number of CFE turbidity reading that were required of your system based on monthly filter

runs on the LT1-ESWTR Summary Form Section A, subsection 1 (Combined Filter Effluent Turbidity)

line 2.

The calculation at the bottom of the Combined Filter Effluent Turbidity recording form must be

performed monthly for each monitoring site. The calculation is performed as follows:

•

For the entire month, determine the total number of filtered water turbidity measurements that were

taken (add up column entitled No. of Daily Turbidity Measurements). This number equals A.

Transfer this number onto the LT1-ESWTR Summary Form Section A, subsection 1 (Combined

Filter Effluent Turbidity) line 3.

•

For the entire month, determine the total number of filtered water turbidity measurements taken that

were less than or equal to the limit specified for the filtration technology used (add up column

entitled No. of Daily Turbidity Measurements That are Less than or Equal to Specified Limits). This

number equals B.

•

Divide B by A and multiply the result by 100 to determine the percentage of turbidity measurements

for the month that did not exceed the specified limit. Transfer this result onto the LT1-ESWTR

Summary Form Section A, subsection 1 (Combined Filter Effluent Turbidity) line 4.

6. Based on grab sample measurements, or actual readings from the continuous monitor or recorder,

record the total number of turbidity measurements that exceed 1 NTU during each day of operation and

Page 2 of 9

their values if conventional or direct filtration is used. At the end of each month, add the numbers in this

column and transfer the sum to LT1-ESWTR Summary Form Section A, subsection 1 (Combined

Filter Effluent Turbidity) line 5.

If slow sand, diatomaceous earth, or other technology approved by the Department is used for filtration,

record the total number of turbidity measurements that exceed 5 NTU and their values. At the end of

each month, add the numbers in this column and transfer the sum to LT1-ESWTR Summary Form

Section A, subsection 1 (Combined Filter Effluent Turbidity) line 6.

If more than one exceedance occurs on a given day, the number of exceedances and their values must

be recorded (i.e., 1=5.2, or 2=5.1, & 5.6, etc.). Enter these values onto the LT1-ESWTR Summary

Form Section A, subsection 1 (Combined Filter Effluent Turbidity) Exceedance of Maximum Turbidity

Limit box. If no exceedances occurred during the month, write NONE in the box.

•

Systems using conventional and direct filtration must contact the Division of Municipal Facilities as

soon as possible, but no later than the end of the next business day, whenever the turbidity of the

finished water EXCEEDS 1 NTU for systems.

•

Systems using slow sand, diatomaceous earth or alternative filtration technologies approved by this

Department must contact the Division of Municipal Facilities as soon as possible, but no later than

the end of the next business day, whenever the turbidity of the finished water EXCEEDS 5 NTU.

•

The single highest CFE turbidity reading that was recorded at your plant during the month must be

recorded on the LT1-ESWTR Summary Form Section A, subsection 1 (Combined Filter Effluent

Turbidity) line 7.

Section A Subsection 2 Individual Filter Turbidity Monitoring Data Summary Form

1. Individual filter turbidimeters that operate continuously, must be calibrated weekly in strict accordance

with the manufacturer’s instructions using EPA-approved primary standards or calibration modules (see

general policy for the Calibration Requirements of Turbidimeters Under the Surface Water Treatment

Rule). Circle whether or not turbidimeters were calibrated weekly during the month.

2. The person(s) responsible for checking individual filter data during the month from strip charts or

computer readouts should be the same person who fills out the ESWTR monthly compliance forms.

3. All systems, regardless of how they operate (i.e., continuous or intermittently), must monitor individual

filtered water turbidity by utilizing continuous monitoring - recording equipment. Systems must record

the actual reading (from each individual filter’s turbidimeter) at least once every 15 minutes anytime

an individual filter is producing water to a clearwell. The measurements must be stored in such a way,

so that the data can be easily retrieved. This retrievable data can then be used to complete the

Enhanced Surface Water Treatment Rule reports, or for review by the Department for at least the next

3 years.

Data recording devices will have to be programed so that the monitoring system will allow individual

filter turbidity measurements to be recorded at least every 15 minutes from the time that the water from

each individual filter passes through a turbidimeter on its way to the clearwell. This point where the

water first enters a turbidimeter will be 00 on a time scale, anytime that the system is started, or a filter

is placed back on-line after it has been backwashed. The plant’s first measurement would be taken at

00 + 15 (the point where the water first enters the turbidimeter, plus 15 minutes). The second

measurement is at 00 + 30, the third 00 + 45, the fourth 00 + 60, the fifth 00 + 75, and so on. If a public

water system is monitoring turbidity more frequently then every 15 minutes, they must be sure that the

intervals set between measurements allow for a turbidity analysis at the 15-minute and 30-minute

Page 3 of 9

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Form SFN54272 "Long Term 1 - Enhanced Surface Water Treatment Rule Summary" - North Dakota

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