HomeMy WebLinkAboutSD-18-28 - Supplemental - 1580 Dorset Street (63)The Stormwater Section has reviewed the “Cider Mill ‐ Phase II” site plan prepared by O’Leary‐Burke
Civil Associates, dated 10/5/13 and last updated on 8/17/2018. We would like to offer the following
comments:
The following are comments that repeated on multiple sheets.
Instead of repeating the General Notes on every page, it would be more useful to have it
compiled in a Narrative. See follow‐up in General Specification summary.
The Inspection Table should be removed from sheets. The OSPC needs to inspect the entire site
and follow the direction on the actual inspection form. This only includes part of the inspection
and is therefore misleading.
The line weights of future work should be lightened so that the current work is more visible.
Include the Wetland line‐type in Legend.
Silt fence is not designed to run perpendicular to the flow. Please consider using a soil or
woodchip berm to retain runoff. All silt fence needs to be wire‐woven within 100 ft upslope of
receiving water (wetland). It is also recommended to use wire‐woven if intending to leave up
through winter conditions.
Construction Sequence‐ The stockpiles have to be seeded within 48 hours? This doesn't speak to
if the pile is in use. The next note then mentions reseeding after 14 days of inactivity. Elsewhere
on the jobsite the temporary seed requirement isn't until 30 days. This should be reviewed to be
made consistent.
Add dewatering note: Discharge from dewatering activities that flows off of the construction site
must not cause or contribute to a violation of the Vermont Water Quality Standards.
Notes specific to individual sheets:
General Specifications:
Consider creating a separate EPSC narrative that includes all permit information, sensitive
resource areas, soils, stabilization requirements, winter stabilization requirements, OSPC
requirements, etc. All permits should be recognized here.
Note 4‐ Is this Sediment Trap referencing a Stone Check Dam? If so it should reference the detail
name. If not, a detail needs to be added.
E1‐ EPSC Construction Phasing Plan
Note that OSPC inspections change for daily inspection during winter conditions between Oct.
15‐ April 15 during earthwork. Monthly if temporarily stabilized. This information should be
provided in the EPSC Narrative.
E2‐ Pre‐Construction Plan
The notes on this sheet should be Pre‐Construction notes determining the necessary
requirements to begin construction.
E3‐ Construction Plan Phase I
Is this the only snow storage for the entire Phase I? It doesn't seem large enough and is
upgradient.
Will trucks be utilizing the road to Sommerfield Ave.? Is so, it will need a Vehicle Tracking Pad. If
not, it should be clearly delineated to limit access.
Winter Guidelines Note 6‐ Spelling
Winter Guidelines Note 7‐ Please include the desired application rate for winter stabilization.
Winter Guidelines Note 9‐ Define type of matting/ netting desired
E4‐ Construction Plan Phase II
Construction Sequencing‐ Note 5 is the same as Note 4
The Limits of Disturbance are extremely tight to construction areas such as the pond. How will
equipment shape the western slope? A dewatering location should be designated on the plans
to ensure that it is within the LOD.
The staging area appears to have silt fence all the way around it. This will limit any access.
E5‐ Construction Plan Phase III
Is the trench outletting the pond wide enough to perform the necessary installation?
How will the western slope of the pond be shaped? The LOD is located at the top of berm.
E7‐ EPSC Stabilization Plan
Specify type of Erosion Control Blanket. Reference Installation Detail.
Mention the slope limitations to mulching and when erosion matting is required.
E8‐ EPSC Details and Specifications
Specify slope requirements for using Erosion Control Blanket.
Will soil testing be required prior to fertilizing?
Winter seed mix should be itemized
Regular grass seed doesn’t match blend specified on E7
No Lime requirements are noted
Fertilizer spec does not match quantity given on E7
Filter bag spec‐ mention that it must be located in an upland location.
Individual Lot spec requiring matting at the end of each day during winter conditions does not
match requirements provided previously in plans.