Mar 6, 2019 | Global Partners Application Assessment – TRM Environmental Consultants
TRM Environmental Consultants
March 6, 2019
Project ID: 19-0202
Hon. Phil Schmidt, Chairman
Town of Livingston Planning Board
Livingston Town Hall
County Route 19, PO Box 65,
Livingston, NY 12541
Re: Global Partners Application Assessment
Dear Mr. Schmidt:
At the request of Livingston Concerned Citizens, I have reviewed the proposed drinking water and wastewater systems for the Global Partners gas station proposal. Based on my review of the January 25, 2019 application package, I submit the attached comments for the Planning Board’s consideration.
In TRM’s professional opinion, the Board should require the facilities to be resized to New York standards. We recommend that you include DOT, DOH, and DEC in the review right away. If the facilities must be resized or reconfigured to meet state standards, residents should have an opportunity to comment on future revisions.
Please do not hesitate to contact me with any questions or concerns at my office number below. Sincerely,
Catherine P. Dare
Chief Executive Manager,
TRM Environmental Consultants, LLC9372 Kirk Road
Westernville, NY 13486
(315) 334-3140 (direct)
(866) 540-2927 (fax)
cc: P Kline, Livingston Concerned Citizens, Tpklinee@gmail.com
D. Gordon, Counselor, David K. Gordon Law Offices, email@example.com E. Svenson, David K. Gordon Law Offices, firstname.lastname@example.org
APPLICATION ASSESSMENT TECHNICAL COMMENTS
TRM reviewed the proposed January 25, 2019 Application prepared by Bohler Engineering for the Global Partners gas station project to be located at NYS Route 9 & U.S. Route 9H in the Town of Livingston, located in Columbia County, New York. The review was performed to ensure that the proposed development would be sustainable and not unduly impact residents and the environment.
I. Technical Comments
The application provides detailed information in support of the design but does not appear to be consistent with New York State (NYS) Department of the Environmental Conservation (DEC) Design Standards for Intermediate Sized Wastewater Treatment Systems, dated March 5, 2014 (Design Standards) and the NYS Department of Health (DOH) Fact Sheet # 2. Due to the lack of conformity to the NYS Design Standards and DOH Fact Sheet, the following concerns are noted:
NYSDesignStandardsforwastewatergenerationisdrivenbyType-of-Usecategoriestaken from the Wastewater System Typical Loading Rates Table (see page B-19). The category “service station/convenience store” controlling design parameter is the number of toilets. At a minimum, two (2) toilets will be needed for this property. The NYS Design Standard requires 400 gallons/toilet/day or a minimum design standard of 800 gallons/day. The application should specify the maximum number of toilets anticipated to be installed to ensure adequate capacity in the septic system.
NYSDesignStandardsindicateinFootnote25thatifFoodServiceisalsoprovided,the appropriate standard needs to be added from the Food Service Operations Table (see page B-20). The Food Service Operations Table specifies that for a drive-in restaurant, the design standard is 50 gallons/day/car space. Construction Detail Sheet, Sheet 13 of 14, shows 22 car spaces, resulting in a design standard of 1,100 gallons per day.
UsingthecriteriainItemAandBabove,thetotalminimumdesignstandardforwastewater should be 1,900 gallons/day, which is nearly two times the proposed design standard of 950 gallons per day based on usage at a similar sized facility in Massachusetts. Based on the maximum percolation test result of 26 minutes per inch (MPI), the recommended sewage application rate for a maximum MPI of 25 is 0.6 gallons/day/square foot, for a minimum leach field of 1140 square feet.
Water supply needs to be designed for peak demand, not minimum average flow. The current proposed design standard for fresh water is based on past usage at a similar sized facility in Massachusetts, resulting in an average flow rate of 12,600 ft3/96 days, 982 gallons/day, or 0.7 gallons/min.
Totaloutflow,ataminimum,shouldmatchtotalinflow,whichimpliesaminimumusage rate of 1,900 gallons/day of potable water, which equates to a minimum average design flow of 1.3 gallons/minute. Again, this is nearly two times the current design rate.
TheNYSDepartmentofHealth(DOH)FactSheet#2requiresaminimumyieldof5 gallons per minute (gpm) for residential water supply wells. A yield of 5 gpm is based on a peak usage of two (2) sinks running at the same time at 2.5 gpm. If a yield of 5 gpm is not available, then storage must be incorporated into the water supply design. Currently, there is no water supply information only usage, and no plans for water storage. Proposed peak usage to ensure an adequate water supply is based on fire protection standards as well as operating standards. Insufficient information is provided regarding the proposed operations to estimate peak water needs. This information should be included in the application.
The application does not discuss water supply requirements that may be applicable based on with current NYS fire code. Ensure minimum water supply requirements necessary to comply with current NYS fire code are met.
NYS Design Standards specify in Table B-2 that a minimum of 200 feet of horizontal separation distance exists between water supply wells and any sewer absorption fields. The current site configuration shows the proposed location of the water supply well on Sheet 6 of 14 along with a 100-foot diameter buffer zone around the well. This is inconsistent with Table B-2 which specifies a minimum 200 feet of horizontal separation distance. The proposed well location should be amended to meet the NYS specified horizontal separation distance as well as the preference for locating wells outside of surface water management areas.
The NYS Design Standard specifies on Pages B27 and B28 the analytical requirements that the water supply well must achieve. Ensure the application addresses the need for analytical testing of the water supply well. A public friendly version as well as the NYS requirements are included for a general understanding of the level of analysis that will be necessary.
II. Engineering Review Personnel
The review was performed by Mr. Robert Senior, PE, and Ms. Catherine Dare, FE of TRM Environmental Consultants, LLC.
Name: Robert Senior, PE
Title: Senior Engineer
Name: Catherine Dare
Title: Chief Executive Manager, TRM