Download Approved Sampling Plan

The measurement of the stream velocity will be made with a MarshMcBirney hand held Flow Mate 2000 portable velocity meter. This unit
utilizes electromagnetic induction created by the moving liquid to
determine velocity. The unit is capable of instantaneous measurement of
velocity from 0 – 20 ft/sec with a ±2% accuracy. Information regarding the
flow meter is included in Appendix D.
C.
SAMPLING PROTOCOL
1.
Ambient Water Quality
Samples for all of the parameters listed previously will be collected
at Location #1 on twenty (20) occasions.
For the first four (4) weeks of the monitoring program, sampling
events will be conducted at a frequency of twice per week (2 /
week) and will not be conducted on consecutive days. For the
remaining sixteen (16) weeks of the ambient water quality
monitoring program, sampling events will be performed at a
frequency of once per week through October 31, 2011. All samples
will be collected during low-flow conditions as defined in Section
11A and daylight hours.
If insufficient flow/precipitation conditions preclude the initiation and
completion of a weekly or twice weekly sampling event(s), the
sampling event(s) can be made up in subsequent weeks. However,
multiple-sampling event weeks will only be utilized to make-up
sampling events in past weeks that were unable to be performed
due to flow/precipitation conditions. (i.e. a multi-sampling event
week will not be used to satisfy the need for future weekly sampling
events) In addition, if the twenty (20) sampling events cannot be
completed by October 31, 2011 (due to insufficient
flow/precipitation conditions) the ambient water quality monitoring
program may be extended into subsequent months provided that
the low flow conditions are met. In both of these situations, no more
than three (3) sampling events can occur in a one week (7 day)
period and samples shall not be taken on consecutive days.
All samples will be obtained between markers placed on the stream
embankments.
If non-detectable results are recorded in each of the first 10
sampling events for any of the parameters associated with
characterizing existing water quality in Crosswicks Creek (with the
exception of ammonia and alkalinity), sampling and analysis for
those parameters may be discontinued upon approval from all
Plumsted Township
12
Quality Assurance Sampling Plan