167Water Quality Monitoring

167.1General Description

This Specification establishes the Contractor’s responsibility to meet the requirements of the current National Pollutant Discharge Elimination System (NPDES) Infrastructure Permit No. GAR100002 as it pertains to Part IV. Erosion, Sedimentation and Pollution Control Plan. In the case of differing requirements between this specification and the Permit, whichever is the more stringent requirement shall be adhered to. 167.1.01 Definitions Certified Personnel— certified personnel are defined as persons who have successfully completed the appropriate certification course approved by the Georgia Soil and Water Conservation Commission. For Department projects the certified person must also have successfully completed the Department’s Worksite Erosion Control Supervisor (WECS) certification course. Water Quality Sampling – as used within this specification, the term “sampling” shall be inclusive of the acts of detecting, noting, discerning, monitoring, etc. for the purpose of gauging compliance with the NPDES General Permit GAR100002. Qualifying Rainfall Sampling Event—as used within this specification, means that which is defined in the NPDES General Permit GAR100002, Part IV.D.6.d(3). 167.1.02 Related References

NPDES Infrastructure Permit No. GAR100002 GDOT WECS seminar. Environmental Protection Divisions Rules and Regulations (Chapter 391-3-7) Georgia Soil and Water Conservation Commission Certification Level IA course OCGA Sec 12-7-1 et seq. Erosion, Sedimentation and Pollution Control Plan (ESPCP) 167.1.03 Submittals General Provisions 101 through 150

167.2Materials

General Provisions 101 through 150. 167.2.01 Delivery, Storage, and Handling General Provisions 101 through 150. 161 161 161 161 161 161 161 161 161 161

167.3Construction Requirements

167.3.01 Personnel Use GASWCC Level IA certified and WECS certified personnel to perform all monitoring, sampling, inspections, and rainfall data collection. Use the Contractor-designated WECS or select a prequalified consultant from the Qualified Consultant List (QCL) to perform water quality monitoring, sampling, inspections, and rainfall data collection. The Contractor is responsible for having a copy of the current GAR100002 Permit onsite at all times. 167.3.02 Equipment Provide equipment necessary to complete the Work or as directed by the Engineer. 167.3.03 Preparation General Provisions 101 through 150. 167.3.04 Fabrication General Provisions 101 through 150. 167.3.05 Construction

Perform inspections, rainfall data collection, testing of samples, and reporting the test results on the project according to the requirements in Part IV of the NPDES Infrastructure Permit and this Specification. Take samples m anually or use automatic samplers, according to the GAR100002 Permit. Note that the GAR100002 Permit requires the use of manual sampling or rising stage sampling for qualifying events that occur after the first instance of the aut omatic sampler not being activated during a qualifying event. Analyze all samples according to the Permit, r egardless of the method used to collect the samples. If samples are analyzed in the field using portable tur bidimeters, the monitoring results shall state they are being used and a digital readout of NTUs is what is pr ovided. Submit bench sheets, work sheets, etc., when using portable turbidimeters. There are no exceptions to this requirement. Perform required inspections and submit all reports required by this Specification within the time frames specified. Failure to perform the inspections within the time specified will result in the cessation of all construction activities with the exception of traffic control and erosion control. Failure to submit the required reports within the times specified will result in non -refundable deductions as specified in Subsection 161.5.01.B.

The Department will provide one copy of the required inspection forms for use and duplication. Inspection forms may change during the contract to reflect regulatory agency needs or the need of the Department. Any costs as sociated with the change of inspection forms shall be considered incidental. Alternate formats of the provided fo rms may be created, used and submitted by the Contractor provided the required content and/or data fields and v erbatim certification statements from the Department’s current forms are included. The Engineer shall inspect the installation and condition of each erosion control device required by the erosion co ntrol plan within seven days after initial installation. This inspection is performed for each stage of construction when new devices are installed. The WECS shall ensure all installation deficiencies reported by the Engineer are corrected within two business days. Ensure the inspections of the areas listed below are conducted by certified personnel and at the frequencies listed. Document all inspections on the appropriate form provided by the Department.

Continue these inspections until a Notice of Termination (NOT) is submitted and use the daily inspection forms. 162 162 162 162 162 162 162 162 162 162

eekly and after Rainfall Events: C onduct inspections on these areas every seven calendar days and within twenty-four hours after the end of a rainfall event that is 0.5 in (13 mm) or greater (unless such storm ends after 5:00 PM on any Friday or any non-working Saturday, non-working Sunday or any non-working Federal holiday in which case the inspection shall be completed by the end of the next business day and/or working day, whichever occurs first):

d ischarging pollutants

er osion control measures are effective in preventing significant impacts to receiving waters Continue these inspections until all temporary BMPs are removed and a NOT is submitted and use the EC-1 Form.

O nce per month, inspect all areas where final stabilization has been completed. Look for evidence of sediments or pollutants entering the drainage system and or receiving waters. Inspect all permanent erosion control devices remaining in place to verify the maintenance status and that the devices are functioning properly. Inspect discharge locations or points, e.g. outfalls, drainage structures, that are accessible to determine if erosion control measures are effective in preventing significant impacts to receiving waters. Continue these inspections until t he Notice of Termination is submitted and use the monthly inspection form.

When the sampling location is a receiving water, the upstream and downstream samples are taken for comparison o f NTU values. When the sampling location is an outfall, a single sample is taken to be analyzed for its absolute NTU value. 163 163 163 163 163 163 163 163 163 163

Summ arize the results of inspections noted above in writing on the appropriate Daily, Weekly, Monthly, or EC-1 form provided by the Department and includes the following information: • Date(s) of inspection • Name of certified personnel performing inspection • Construction phase • Status of devices • Observations • Action taken in accordance with Part IV.D.4.a.(5) of the GAR100002 Permit • Signature of personnel performing the inspection • Any instance of non-compliance When the report does not identify any non-compliance instances, the inspection report shall contain a statement that the best management practices are in compliance with the Erosion, Sedimentation and Pollution Control Plan. (See the EC-1 form.) The reports shall be made and retained at the site or be readily available at a designated alternate location until the entire site or that portion of a construction project that has been phased has undergone final stabilization and a Notice of Termination is submitted to the Georgia Department of Natural Resources Environmental Protection Division (GAEPD). Such reports shall be readily available by the end of the second business day and/or working day and shall identify all incidents of best management practices that have not been properly installed and/or maintained as described in the plan. The inspection form certification sheet shall be signed by the project WECS and the inspector performing inspections on behalf of the WECS (if not the same person). Submit all inspection reports to the Engineer within twenty-four hours of the inspection. The Engineer will review the submitted reports to determine their accuracy. The Engineer will notify the certified personnel of any additional items that should be added to the inspection report. Complete any items listed in the inspection report requiring routine maintenance within seventy–two (72) hours of notification or immediately during perimeter BMP failure emergencies. Deficiencies that interfere with traffic flow, safety, or downstream turbidity shall have immediate reasonable steps taken to address the deficiencies. BMP(s) that has failed or is deficient beyond routine maintenance and has resulted in sediment deposition into waters of the State shall have immediate reasonable steps taken to address the condition, including but not limited to cleaning up any contaminated surfaces so the sediment material will not discharge in subsequent storm events. When the repair does not require a new or replacement BMP or significant repair, the BMP failure or deficiency must be corrected by the close of the next business day from the time of discovery. If the correction requires a new or replacement BMP or significant repair, the correction must be completed and operational within seven (7) days from the time of discovery. If seven (7) days is infeasible, the Contractor must document why the timeframe is infeasible and coordinate with the Engineer to schedule the correction as soon as feasible after the seven (7) day timeframe. The Department must be in agreement with the infeasibility assessment. Assume responsibility for all costs associated with additional sampling as specified in Part IV.D.6.d.3.(c) of the NPDES GAR100002 Permit if either of these conditions arise: • BMPs shown in the Plans are not properly installed and maintained, or • BMPs designed by the Contractor are not properly designed, installed and maintained. 164 164 164 164 164 164 164 164 164 164

l ocations identified in the ESPCP approved by the Department.

I nclude in all reports, the following certification statement, signed by the WECS or consultant providing sa mpling on the project: “I certify under penalty of law that this report and all attachments were prepared under my direct supervision in accordance with a system designed to assure that certified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons

directly responsible for gathering the information, the information is, to the best of

my knowledge and belief, true, accurate and complete. I am aware that there are

significant penalties for submitting false information, including the possibility of fine

and imprisonment for knowing violations.”

When a rainfall event requires a sample to be taken, submit a report of the sampling results to the

Engineer within seven working days of the date the sample was obtained. Include the following

information in each report:

1) Date and time of sampling

2) Name of certified person(s) who performed the sampling and analyses.

3) Date the analyses were performed

4) Time the analyses were initiated

5) Rainfall amount on the sampling date (sampling date only)

6) References and written procedures, when available, for the analytical techniques or methods used.

7) Whether the samples were taken by automatic sampler, rising-stage sampler, or manually (grab

sample)

8) The NTU of each sample, the results of the analyses, including the bench sheets, instrument readouts,

computer disks or tapes, etc., used to determine the results

9) Location where each sample was taken (station number and left or right offset)

10) Identification of whether a sample is a receiving-water sample or an outfall sample

11) Project number and county

12) A clear note if a sample exceeds 1000 NTUs by writing “exceeds 1000 NTUs” prominently upon the

report

In the event a qualifying rainfall event does not produce a discharge to sample, or sampling is

“impossible”, as defined in the GAR1000002 Permit, a written justification must be included in the report

as required at Part IV.D.4.a.(6) of the GAR100002 Permit.

Provide sampling results to the Project Engineer within 48 hours of the samples being analyzed. This

notification may be verbal or written. This notification does not replace the requirement to submit the

formal summary to the Engineer within 7 working days of the samples being collected. The Engineer will

ensure submission of the sampling report to GAEPD by the 15th of the month following the sampling

results as per the GAR100002 Permit. The WECS will be held accountable for delayed delivery to the

Department which results in late submissions to GAEPD resulting in enforcement actions. 165165165165165165165165165165

Record the measurement of rainfall within disturbed areas that have not met final stabilization once each

24-hour period, except for non-working Saturdays, non-working Sundays and non-working Federal Holidays

until a Notice of Termination is submitted. Project rain gauges and those used to trigger the automatic

samplers are to be emptied after every rainfall event. This will prevent a cumulative effect and prevent

automatic samplers from taking samples even though the rainfall event is not a qualifying event. The daily

rainfall data supplied by the WECS to the Engineer will be the official rainfall data for the project for

compliance with the permit.

167.3.06 Quality Acceptance

General Provisions 101 through 150.

167.3.07 Contractor Warranty and Maintenance

General Provisions 101 through 150.

167.4Measurement

Water Quality Inspections in accordance with the inspection and reports sub-sections will be measured for payment

by the month up to the time the Contract Time expires. Required inspections and reports after Contract Time has

expired will not be measured for payment unless a time extension is granted.

Water Quality Sampling is measured per each. “Each” means each qualifying rainfall sampling event, not each

sampled site.

167.4.01 Limits

General Provisions 101 through 150. Submit the monitoring summary report to the Engineer within 7 working days

167.5Payment

Payment for Water Quality Inspections and Water Quality Sampling will be made as follows:

Water Quality Inspections will be paid at the Contract Price per month. This is full compensation for performing the

requirements of the inspection section of the NPDES Permit and this Specification, any and all necessary incidentals,

and providing results of inspections to the Engineer, within the time frame required by the NPDES Infrastructure

Permit, and this Specification.

Water Quality Monitoring and Sampling per each qualifying rainfall sampling event is full compensation for meeting the

requirements of the monitoring sections of the NPDES Permit and this Specification, obtaining samples, analyzing

samples, any and all necessary incidentals, and providing results of turbidity tests to the Engineer, within the time

frame required by the NPDES Infrastructure Permit, and this Specification. This item is based on the rainfall events

requiring sampling as described in Part IV.D.6 of the Permit. The Department will not pay for samples taken and

analyzed for rainfall events that are not qualifying events as compared to the daily rainfall data supplied by the WECS.

Payment will be made under:

Item No. 167 Water quality inspections Per month

Water Quality Monitoring and Sampling will be paid per each qualifying rainfall sampling event.

Payment will be made under:

Item No. 167 Water quality monitoring and sampling Per each 166166166166166166166166166166

167.5.01 Adjustments

General Provisions 101 through 150.. 167 167 167 167 167 167 167 167 167 167