C.T. Male.05.20.2005C,T. MALE ASSOCIATES, P.C. F/0''5
50 Century HIII Drive, P.O. Box 727, Latham, New York 12110-0727 Za.
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May 20, 2005
Mr. Craig Brown
Zoning Administrator, Code Compliance Officer
Town of Queensbury
742 Bay Road
Queensbury, New York 12804-5902
Re: SUB 7-2005
Richard Schermerhorn: Hiland Estates Subdivison
Dear Mr. Brown:
As requested, we have reviewed the stormwater, grading, utility and code compliance
components of the submission package for the above referenced project. The information we
reviewed included the Site Plan Review application package, the Full Environmental
Assessment Form, Plan Sheets 1 - 8 of 8 (dated April 13, 2005), and a Stormwater Management
Report. The documents were prepared by Nace Engineering, P.C. Based on our review of these
documents, we offer the following comments:
General
1. The proposed project will result in more thanl.0 acre of disturbance and therefore the
owner must apply for SPDES permit coverage for stormwater discharges from this site.
Consequently, this project will require the preparation of a Notice of Intent (NOI) and a
stormwater Pollution Prevention Plan (SW PPP), which has been submitted for review.
2. The proposed roadway crosses a delineated wetland. The amount of wetlands
disturbed should be indicated and any Army Corps of Engineer (ACOE) permits to
disturb these wetlands should be obtained.
Reeardine Stormwater and Gradine'
3. Many of the home sites are located within very steep areas of the parcel. Additional
grading detail at each lot should be shown.
4. Subcatchment 01, the boulevard section at the entrance road, includes 10,650 square feet
of pavement. The stormwater management report indicates that this section of roadway
will not have stormwater mitigation, since doing so would encroach on the adjacent
wetlands. The quantity of flow
t this design ill be be duced in included,s post -
a
construction event. quality design, point
significant amount of pavement will drain directly to the wetlands.
5. The stormwater management report indicates that 2� ur extentoo d detention the
year storm cannot be met, since the orifice opening m the actin of the stormwater
must be met, and can generally be achieved by modifying grading
basins.
6. Cross -sections of both of the stormwater ponds should be included on the details nets.
7. A material and compaction specification and testing methods should be included for the
embankments created by the stormwater ponds.
Architecture
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• Civil Engineering - Environmental
Services • Survey
& Land Information Services
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May 20, 2005
Mr. Craig Brown
Page 2
8. A fixed vertical sediment depth marker should be installed in the forebay at each
treatment basin to measure sediment deposition over time.
9. An aquatic bench should extend inward up to 15' from the normal she to a
maximum depth of 18" below normal pool WSELEV.
10, The aquatic bench should be landscaped to prohibit access to the permanent pool,
particularly due to the ponds location near residences.
11. The drainage easement for Stormwater Basin #2 should include a stabilized
maintenance access drive, 12' wide minimum.
12. Both ponds require vehicular access to the outlet device for maintenance.
13. Some of the elevations associated with both stormwater basins appear to be in error.
14. The proposed planting shown to the east of the entrance drive (STA 0+50) appear to be
shown in the wetlands.
Regarding SWPFF and Brosion & Sediment Control Plan
15. The SWPPP should include information regarding the anticipated frequency of
S'WPPP inspections. If more than 5 acres is disturbed at any given time it will be
necessary to request and obtain written approval from NYSDI;C.
16. A statement should be included that an initial inspection will be performed by a
qualified professional to certify that all erosion and sediment control measures
are installed properly prior to commencement of major earthwork on the site.
17. Calculations to size the temporary sediment basins should be provided on the
plan sheets.
18. Dimensions of. the temporary sediment basins should be included on the plan
sheets.
19. Erosion and sediment control measures should be included for individual lot
construction.
2o. Consideration should be given to providing erosion control blankets on slopes
greater than 4H:1V particularly on slopes adjacent to wetlands.
Reg_ardingAccess Management
21. Assuming that the road will be dedicated to the Town of Queensbury, the length
of the cul-de-sac far exceeds 1,000 feet per the Town standards.
Regarding 11tilities
22. The water main is shown as 6" diameter. Consideration should be given to
increasing the diameter to a minimum of 8". The diameter of the main should be
justified by performing a hydrant flow test and performing a hydraulic analysis
of the system.
23, A connection detail for the proposed sewer main extension should be provided
on Sheet S-3.
24. The size of the existing water and sewer mains should be shown on the Plan
Sheets.
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May 20, zoos
Mr. Craig Braum
Page 3
25. Inverts and rims for the catch basins should be provided on the flan Sheets,
If you Have any questions related to our comments, feel free to call our office.
Sincerely,
C.T. MALE ASSOCIATES, P.C.
1- �ji.xrt�$�1..
T. James Houston, PE
Senior Civil Engineer
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