Loading...
Engineer Report ENGINEER'S REPORT PROPOSED COMMERCIAL SITE 87 MAIN STREET TOWN OF QUEENSBURY WARREN COUNTY, NY August 24, 2015 Prepared by Paul K. Male, P.E., P.L.S. & CPESC 7 Stone Clover Drive Saratoga Springs, NY 12866 518-583-8879 Introduction This report was prepared at the request of Performing Asset Strategies, LLC to discuss the suitability of the site for two proposed commercial buildings. The 0.99 acre parcel is located on the north side of Main Street (County Route No. 28), approximately 170 feet westerlyof Pine Street. The site was approved as a pp Y commercial site known as Victoria Square and was approved on or about May 13, 2003. The original approval for Victoria Square included a main building of 1,933 sf; a storage building of 439 sf; porches of 492 sf; and parking, drives & walks of 11,270 sf. The remainder of the site was permeable. Existing Conditions v All the buildings on the site were removed on or about the fall of 2014. The original asphalt entrance is in place and is in good condition as well as the original 18 paved parking spaces. Other physical features that are present on the site include five 7-inch caliper maple trees, an existing concrete sidewalk three post lights, a gas service, a water service, two drywells and an on-site subsurface absorption trench area, located on the east side of the parcel. The rear of the parcel is covered with existing vegetation, consisting of small deciduous trees trees and brush. Alongthe western roe line there is a line of property rtY and brush. There are also a couple of large maples located along the easterly property line. The open areas of the site are generally covered with tall grass and first growth brush and trees. Proposed Site Plan The existing site is proposed to be developed as a redevelopment site with two new buildings totaling 9,648 sf. It is intended to use the existing entrance, paved area, parking spaces, and storm sewer system including the dry wells and the existing absorption trench area. The smaller building, consisting of 3,648 sf, will be constructed parallel with Main Street. The larger building, consisting of 6,000 sf, will be constructed north of the smaller building and parallel with the existing parking area. To accommodate the increase in square footage of the new buildings, the Applicant is proposing to add 13 additional parking spaces along the easterly property line over the existing absorption trench facility. In addition, there will be 26 new spaces located north of the larger building. Other improvements to the site include new walkways between the buildings, a dumpster enclosure, signage and additional lighting. Septic System At the time of approval, this project was served with an on-site Elgen septic system, located between the building and the right-of-way of Main Street. Following the reconstruction of Main Street in 2012, a new public sanitary sewer was constructed in Main Street. When the new sanitary line was constructed, a new xx- inch lateral was installed to serve this property. The anticipated sewer flows from the proposed buildings are based on 0.1gal/sf/day. The estimated flow is 0.1/gal/sf/day x 9,648 sf= 965 gal/day. The xx- inch lateral can safely handle the anticipated flows. Water Supply The site will be served with public water by an existing xx-inch water line located in Main Street. The anticipated water usage is estimated at 965 gal/day. Parking The former use required a total of 13 parking spaces for the Ice Cream and Gift Shop. A total of 18 parking spaces, including two handicap spaces, were constructed. The proposed site plan will use the 18 existing parking spaces and construct an additional 13 spaces along the easterly property line and an additional 26 spaces in the rear of the parcel, for a total of 57 parking spaces. Storm Sewer The former known as Victoria Square was approved on/or about May 13, 2003. The approved plan had 32% of the site as impervious and 68% of the site pervious. The soils investigation performed in 1988, by Frank Walter, showed one foot of topsoil on top of 10 feet of generally coarse sand. The percolation rate was found to be 1 inch per minute. The method of addressing the increased runoff was two 6-foot diameter drywells, four feet in height, connected by an 8-inch equalizer pipe. In addition, an absorption trench, 30 inches wide, 42 inches deep and 80 feet in length, filled with # 2 stone, was constructed along the back edge of the green space along the easterly property line. The proposed site plan will significantly increase the amount of impervious surface. The former site included a total of 2,864 sf of impervious building coverage. The proposed site plan, consisting of 9,648 sf will add an additional 6,784 sf of impervious area. The two new buildings will have a total of 9,648 sf of impervious surfaces that will need to be mitigated. To mitigate the increased runoff, all of the new pavement will be permeable asphalt. In addition, all the new sidewalks will be constructed of porous concrete. To accommodate the increased impervious surfaces, new drywells, similar to those in the front parking area will be constructed in the rear parking area as well as the entrance along the smaller proposed building. The well drained soils are more than capable of handling all the increased runoff from the increase impervious surfaces. The redevelopment of the site can easily be handled by the well-drained soils on the site and should not result in any new runoff leaving the site. Respectively submitted; Paul K. M. i.E �.