The municipal utility shall regularly use meters or devices or methods for determining waste quantities (volumes) directly or by differentials or otherwise and make tests and use other means for determining the quality and other characteristics of all sewerage, industrial wastes or other wastes discharged into the county sewer system.
All measurements, tests and analyses of the characteristics of sewerage and wastes to which reference is made in these rules and regulations shall be determined in accordance with the latest edition of Standard Methods for the Examination of Water and Wastewater, as prepared, approved and published jointly by the American Health Association, the American Water Works Association and the Water Pollution Control Federation, or other reference sources as specified by regulatory agency requirements, such as Methods for Chemical Analysis of Water and Wastes, published by the USEPA. Sampling shall be carried out in accordance with the customarily accepted methods such as to reflect the effect of the constituents upon the county sewer system and to determine the existence of any hazards. Volume determination shall be conducted in accordance with sound engineering practice.
A. 
In determining the volume of wastewater contributed to the county sewer system by a local sewer, the municipal utility shall utilize measurements as taken by continuously recording metering devices. Such meters, recorders and appurtenances shall be installed, calibrated, operated and maintained by the Authority.
B. 
In determining the volume of wastewater contributed to the county sewer system by an industrial user, the municipal utility may use as a representative value:
(1) 
The amount of water supplied to the premises as shown upon the water meter, if the premises are metered;
(2) 
The volume of wastewater discharged into the local sewer by the industry as determined by measurements made by the Authority;
(3) 
An allowance for each employee on the premises; or
(4) 
A figure determined by the municipal utility by any combination of the foregoing or any other equitable method.
C. 
Measurements shall be made, whenever possible, at a common manhole into which all volumes from an industry are combined. Such manhole shall be constructed by the owner of such premises, at his own expense, when directed by order of the Chief Engineer. Whenever the installation of such a common manhole is impossible or impractical, the owner of such premises shall construct and maintain at his own expense, in lieu of the common manhole, two or more manholes as required by order of the Chief Engineer for accurate measurement of all volumes discharged from such premises into the sewer system. In the event that no common manhole has been required, the measurements shall be taken at a point or points to be selected by the Chief Engineer.
A. 
The pollutant concentration of any wastewater shall be determined by the municipal utility from representative samples taken by representatives of the municipal utility at a point of volume determination as provided for in § 227-19 of this article at any period or time or in such duration and in such a manner as the Chief Engineer may elect or at any place or manner mutually agreed upon between the user and the Chief Engineer. The intent of any sampling procedure is to establish the pollutant concentration in the wastewater discharged during an average or typical day. This concentration may be derived, according to the best judgment of the Chief Engineer, by combining repeated subsampling during one day, by combination of a series of such days or by combination of a number of a multiple series of such days.
B. 
Whenever the wastes discharged to a sewer might be expected to show appreciable periodic variation during the year, the municipal utility may average the results of two or more series of analyses taken to reflect these variations and thereby determine an average annual pollutant concentrations.
In the event that the volume and/or pollutant concentration of the waste discharged to the county sewer system as determined under §§ 227-19 and 227-20 of this article is disputed by a user, a program of resampling and gauging with subsequent chemical determination may be instituted as follows:
A. 
The user may submit a written request for resampling and gauging of the waste to the Chief Engineer. Upon receipt of such request, the municipal utility will conduct the necessary test. The user shall confer with representatives of the municipal utility in order that agreement may be reached as to the various factors which must be considered in a new sampling program; or
B. 
The user may, at his own expense, employ a consultant or agency of recognized professional standing to conduct a resampling and reanalysis program, under the direction of the Chief Engineer and for a period of time to be specified by the Chief Engineer. The results of the resampling and the reanalysis shall be considered to be the current analysis of the user's waste. In all cases, the determination of the municipal utility, whether or not modified after resampling and reanalysis as provided for in this section, shall be final as regards to volume or pollutant concentrations.