DDW-2024-006792

COMMENT RESOLUTION FORM (Responses to J. Paul Wright's February 22, 2024 email)
CLARK BENCH WATER PROJECT
Comment Resolution Responder Date
1) The plans show that they are 90% design and for review only. A final set of plans for construction
should be provided.
The for review only stamp has been removed and the plans have been labled as
construction drawings.JHJ 2/28/2024
2) The following are typical details or notes that are needed for the plans for water lines. My
question is are you planning on using Kane County WCD’s water line standards? While these have
been approved for their other water systems (Duck Ck, Long Valley, Johnson Canyon), they have not
been approved for this water system yet. But, as long as those standards will be provided to the
selected contractor, I am okay as long as that is what is happening.
• Soil type in pipe zone
• Disinfection
• Pressure testing
• Valves
• Fire Hydrants
• Service connections
Yes KCWCDs standards will be used and have been checked to include those
items. They will also be provided to the contractor.JHJ 2/26/2024
Well
3) Is there a detail to show where the well pump to waste line goes, showing adequate screen (#4),
downturned, and 18” of freefall? If this detail is supposed to be Detail G/D1, this should be noted
somewhere in relation to the waste line.
The well pump to waste line ends on page WTR2 with a callout to G/D1 JHJ 2/23/2024
Booster Pump
4) Since this booster station is replacing (essentially a modification of the existing one), I am going to
keep the pump station as the same facility ID in our database (PF001).Noted JHJ 2/23/2024
5) The specifications don’t indicate what pump skid you are requiring, you only indicate Tigerflow or
Grundfos. You show 1 fireflow pump, 1,000 gpm at 230 feet of head (100 HP in the drawing) and two
smaller centrifugal boosters at 20 gpm. Since this booster system is providing all the flow and
pressure to this water system, is 20 gpm sufficient to meet the peak instantaneous flow for all the
connections on this system? These smaller boosters should be able to provide that peak flow, unless
you are planning to cycle in the fire flow pump with a VFD. Anyway, I need to know what the actual
flow and HP rating will be for each of the two smaller centrifugal pumps (plans show 2.29 HP, but
that is not a nominal pump rating typically).
The two smaller pumps will each have a rating of 3HP and system flowrate of
20gpm.BLL 2/26/2024
6) For the booster pump station, the suction side of the pumps need to have a compound gauge
(measure both positive and negative pressure) and discharge side with a standard gauge. The
specifications only call out regular Ashcroft gauges in 13320.2.7 of the specifications.
The intent was to have those included on the pump skid as we spoke to the
supplier. To ensure it is not forgottoen we have updated the Spec/plans to callout
a compound gague on the pump skid.
BLL 2/28/2024
Chlorinator
7) What is the make and model of chlorinator, Regal and what Model?Regal model 216 BLL 2/27/2024
8) Screen on Detail C/D1 for chlorinator vent should be a #14 screen, not a #4 screen.Detail C/D1 has been updated to show a #14 screen.JHJ 2/26/2024
9) Separate switches are required outside of the chlorine room for fans and lights? Has it been
designed that way?
The electrical sheets have been updated to show separate switches outside the
chlorine room.KRD 2/28/2024
10) There is no profile view of the chlorinator room nor details of venting locations by elevation. You
need to ensure that exhaust vent takes from near the floor and the air intake louvers are near the
ceiling.
Detail E/BLDG 2 has been added to the plans to show the air intake and vent
locations.JHJ 2/28/2024
11) In the chlorinator description, you listed the well capacity at 20 gpm, but the plans show 80 gpm.
This number should be what the well pumps, so if that is 80 gpm, it should be changed to that since
the chlorinator will need to be set at the well flow rate.
It should be 80 gpm, there was a mistake In the description which has been
updated.BLL 2/27/2024
Tank
12) The air vent pipe penetration shall meet the following from the rule:EL 2/26/2024
Vent pipes, in addition to seepage rings, shall have raised concrete curbs that direct water away from
the vent pipe and are formed as a single pour with the roof deck.EL 2/26/2024
13) The air vent detail 119 on Sheet S3.4 does not show how high above the covered tank surface it
needs to be. The DDW rule requires that with a buried tank (as indicated on this detail showing fill),
that air vent should be a minimum of 24 inches above the covered surface.
Detail 119 on Sheet S3.4 has been updated to reflect these changes.EL 2/26/2024
14) The access hatch needs to have enough detail to show the minimum requirements that it is raised
up at least 4 inches above the concrete curb, with a 2-inch shoebox close fitting downturn, lockable,
and has a gasket on the underside with no penetrations through the hatch lid.
Detail 124 on Sheet S3.5 has been updated to reflect these changes.EL 2/26/2024
15) The hatch details on Sheet S3.5 don’t show a dimension of how high the curbing should be. As
indicated in the comment about the air vent, there is a detail that shows the tank to have cover (fill).
If that is the case, then the hatch curbing is required to be raised a minimum of 18 inches above the
soil cover.
Detail 124 on Sheet S3.5 has been updated to reflect these changes.EL 2/26/2024
16) Is the Drain Detail G/D1 meant to be used for the overflow and drain from the tank? It appears
that the drain and overflow might be separate or is one of the two outfall lines meant to be a
foundation drain.
The overflow and drain for the tank combine into the 8" line leading to the outfall
on WTR2. The second line to the outfall is the well pump to waste. Yes detail G/D1
is used.
JHJ 2/23/2024
Detail 119 on Sheet S3.4 has been updated to reflect these changes.
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