Non-domestic waste being discharged into the sewer system shall be subject to periodic sampling and inspection by the Township to be used as a basis for determining additional charges due to excessive concentrations for BOD5 and/or total suspended solids, and substances prohibited in § 355-133 of this Part 4. Such sampling and inspection shall be the basis for computing strong waste surcharges in accordance with this part.
All sampling shall be a representative manner and in accordance with 40 CFR 403.12. The collection and analysis of samples obtained shall be made in accordance with United States EPA methodology and procedures, including 40 CFR, Part 136, as amended.
At the request of the industrial, commercial, educational or institutional user, samples taken by the treating POTW personnel can be split and the results of both analyses used in calculating the strong waste surcharge. The industrial user must arrange for and pay for the pickup of the split sample at the treating POTW by the industrial user's laboratory. All analysis results shall be copied to the treating POTW and used in the calculation of the surcharge bill.
Commercial and industrial customers will be sampled and invoiced on a quarterly basis. Customers who have a weak waste product get sampled yearly. The sampling is done unannounced by POTW personnel. A twenty-four-hour composite sample is taken with an automatic sampling device. The samples are then taken to a professional industrial laboratory. Upon receipt of a laboratory analysis, the Township will review the results. If those results are 50% greater than the average of the four preceding quarters' samples, the Township will notify the customer of the unusually high result.
Customers may opt to be resampled at their own expense or they may accept the initial results. If a customer chooses to be resampled, the sampling will occur unannounced within the next four weeks. The lesser of the samples will be used in calculating the surcharge for that quarter. In the absence of additional samples (this would most likely occur, if at all, in the winter when cold weather might prevent additional sampling), an estimated bill using the average results of the four previous quarters would be used in calculating the surcharge for that quarter.
All costs of collecting and analyzing samples incurred by the Township in connection with determining strong waste surcharges or with monitoring non-domestic wastewaters to determine compliance with this part shall be billed by the Township directly to the non-domestic user whose wastewater was sampled.