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_ . .— .. _ . . � . . _ . . — . . — . . . . . _. . _ . . _ . . . . . _. <br /> Common Illicit Discharge Origination Sources: I <br /> ■ An internal plumbing connection (e.g., the discharge from a washing machine is I <br /> directed to the building's storm lateral; the floor in a garage is connected to the i <br /> building's storm lateral) <br /> A service lateral cross-connection (e.g., the sanitary lateral from a building is <br /> I connected to the MS4) <br /> ■ An infrastructure failure within the sanitary sewer or MS4 (e.g., a collapsed <br /> sanitary line is discharging into the MS4) <br /> ■ An indirect transitory discharge resulting from leaks, spills, or overflows. I <br /> . . — . .— . . — . . — ..—. . . . — . . _ . . _. . _ . . _. ._ . . _ . . _ . ._ . . _ . .— . . _ . . _ <br /> 3.2 Evidence Collection <br /> It is important to capture evidence of the spill or illicit discharge upon arrival on scene, <br /> during the cleanup, and after the work has been completed. Samples and photographs <br /> should be obtained prior to the evidence being changed or destroyed by weather or <br /> cleanup crews. If there are multiple agencies working on a single incident, sharing <br /> information is imperative so that duplication of efforts is minimized. <br /> Evidence will be used to hold the responsible party accountable, for successful <br /> enforcement of civil/criminal statutes, and to recover cleanup costs. Uniform procedures <br /> should be followed when documenting an incident through sampling, photographs, and <br /> collecting other information. This includes maintaining a "chain of custody" on all <br /> samples and other evidence. <br /> Document the following evidence information: RECEIVE.—D <br /> ■ Date and time of photos Ib1 AY ... 0 L J Il J <br /> ■ Name of the responsible party <br /> ■ Exact location and site description <br /> ■ The photographer's name ENVtP�N1\�IENTAL HEALTH <br /> DEPARTMENT <br /> ■ Keep an on-going written log <br /> Statements should be taken while eyewitnesses are still available. Written <br /> documentation should include notes or a log of your observations, conversations, <br /> and statements from witnesses, decisions, actions, sampling activity, and <br /> photographs. Include names, addresses, dates, and times in your notes. Also, <br /> obtain copies of any shipping papers, material safety data sheets (MSDS), and <br /> statements from responsible parties regarding product, vehicle numbers, etc. <br /> Make certain you have the correct spelling of each chemical name (common and <br /> scientific). <br /> City of Lathrop Spill Response Plan 8 Rev. 10/27/15 <br />