Current through Register Vol. 48, No. 38, September 20, 2024
This phase requires a physical inspection of the receiving
water body and near stream property. Additionally, any necessary elements
missing from the Phase I background report shall be addressed in this step.
Factors to be considered include:
a)
Inspection of stream in and around vicinity of each overflow for sludge
deposits, sewage related odors, floating debris of sanitary sewage origin, and
any other visible signs of pollution impact. Inspection techniques shall be
selected so as to assure maximum reliability of the results including:
1) probing, disturbance and extraction of
bottom sediments in pools and other quiescent portions of stream to note color,
texture, odor and other aspects of sediments that are indicative of sewage
sludge:
2) estimates of extent and
severity of sludge deposition in terms of depth of deposition, area of stream
affected and percentage of stream bed within affected area that contains sludge
deposits; and
3) inspection of
shoreline vegetation, logjams and other obstructions likely to retain floating
sewage debris.
b) Stream
Hydraulics:
1) Stream hydraulic factors shall
be identified including: average width of stream channel from bank to bank,
height of stream banks above thalweg, stream bed gradient.
2) For receiving streams with a 7Q10 (average
seven day low flow which occurs once in 10 years) flow greater than 10 cubic
feet per second this information can be omitted, substituting the 7Q10
value.
c) Stream
morphological factors including:
1) substrate
type;
2) variation of structure via
natural meandering, pool and riffle sequence;
3) degree of dredging, channelization or
other alteration of natural stream character; and
4) accumulation of logjams and other
naturally occurring vegetative debris.
d) Description of stream side property
including:
1) topography;
2) land cover including forrested,
agricultural row crop, marsh, grass buffer strip, residential lawn,
and
3) land use if not already
identified in Section
375.202(a)(4)
including a specific determination if
affected area is utilized by or accessible to children for recreational
activities.
