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UniFirst Corporation Self -Monitoring Sample Program Page 3 of 4 Sample Discharge Limit Parameter Sample Sam P Sample Location (1)lnstantaneous maximum Frequency Type diagram (2)Daily maximum attached (3)Monthly maximum Oil & Grease 1 per week Grab, well mixed and C 200 mg/L — (1) local limit (HEM) representative of sampling day and reporting period Total Petroleum 1 per week Grab, well mixed and C 100 mg/L — (1) local limit Hydrocarbons representative of sampling (SGT -HEM) day and reporting period Non -Polar Permittee shall submit reports on a monthly basis. Reports shall be submitted to the City of Stockton Environmental Control section no later than the I& day of the following month for which monitoring was conducted. The volume of discharge shall be recorded daily. Reports shall include total daily flow and total monthly flow, in gallons, discharged to the sewer. pH shall be reported by exception on a monthly basis. By exception shall mean reporting the minutes per day and value thereof for any pH reading that is out of compliance. All instances of noncompliance for pH must be accounted for and reported in the monthly report. Technician performing the calibration will record the date and time on the pH recording chart and initial the entry. Permittee shall insure that all handling, preservation, and laboratory analysis of collected samples is performed in accordance with 40 CFR Part 136 and amendments thereto, unless otherwise specified in the monitoring conditions of this permit. 24 hour flow proportional composite sampling shall be performed on a continuous basis. The monthly reports will also indicate the time, date and place, of sampling, persons responsible for collection and handling of the sample including all chain of custody reports, methods of analysis, date of analysis, sample analysis results including quality control results for the analysis and shall certify that such sampling and analysis is representative of the expected pollutants discharged to the sewer. Should the permittee monitor forany pollutants more frequently than required by this permit, including, but not limited to, spills, site remediation work, stormwater, internal treatment system audits, or treatment operational testing the results from those monitoring events shall also be included in the monhly report. Should monitoring by the permittee indicate a violation with any part or condition of this permit, Permittee must notify the Environmental Control Section within24 hours of becoming aware of the violation. Any instances of failure to report by the permittee may result in the assessment of maximum fines allowed by the Stockton Municipal Code. Permittee shall devise a schedule of rotating days for sampling purposes, subject to approval by the City of Stockton Environmental Control Section. An example of rotating days for once per week would be Monday of the first week, Tuesday of the second week, Wednesday of the third week, etc. The monthly report and any compliance reports required by this permit shall contain the following certification statement signed by an authorized representative: "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified 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 submitted is, to the best of my knowledge and belief, true, accurtte, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." The permittee shall perform the City of Stockton, Department of Municipal Utiliies, Quality Assurance Manual for Self -Monitored Industries in conjunction with permittee Sel€Monitoring Sample Program.