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Home My WebLink About484 Willow Operation & Maintenance Manual Project xxxxxxx 440 North Wells Street | Suite 320 | Chicago, Illinois 60654 312.324.5500 | fax 319.364.4251 | shive-hattery.com Long-term Pollution Prevention & Operation and Maintenance Plan Eversource Energy Yarmouth – Warehouse Yarmouth, MA | January 19th , 2022 Prepared For: Eversource Energy 484 Willow Street Yarmouth, MA 02673 Shive-Hattery Project Number: 3172201210 Owner Signature:______________________________________ Date:__________________________________________ Shive-Hattery Project Number: xxxxxxx Page 1 of 3 Project 3172201210 | Date – J anuary 19th, 2023 1. Stormwater Management System Owners and Party Responsible for Operation and Maintenance • Eversource Energy is the stormwater management system owner. • Eversource Energy is the party responsible for operation and maintenance and for financing operation and maintenance. Once the facility is constructed, Eversource Energy will provide the contact information for the individual(s) responsible for operation and maintenance. • Once the facility is constructed, Eversource Energy will determine where this Operation and Maintenance Manual will be permanently store on site. During construction this manual will be kept in the same location as the SWPPP (see SWPPP). 2. Good Housekeeping Procedures a. Good Housekeeping Procedures per the Town of Yarmouth Stormwater Regulations Section 2.05.2 • Wash vehicles at commercial car washes or on lawns or pervious areas using biodegradable and phosphate free detergent • Removal of sediment, leaf litter and other organic debris from impervious surfaces a minimum of twice a year in the spring (after snowmelt) and fall (after leaf fall) • Removal of sediment/debris from catch basin structures a minimum of once a year • Restrictions on the application of fertilizers, including: o Fertilizer shall not be applied during or immediately prior to heavy rainfall, such as but not limited to thunderstorms, hur ricanes, or northeastern storms, or when the soil is saturated due to intense or extended rainfall o Fertilizer shall not be applied between November 12 and the following March 31; o Fertilizer shall not be applied, spilled or deposited on impervious surfaces or in a manner that allows it to enter into storm drains o Fertilizer shall not be applied within 100 feet of any surface water or within the Zone I of a public drinking water well o Fertilizer containing phosphorus shall not be applied unless a soil test taken not more than three years before the proposed fertilizer application indicates that additional phosphorus is needed for growth of that turf, or unless establishing new turf or reestablishing or repairing turf after substantial damage or land disturbance. o A single application of fertilizer that contains nitrogen shall not exceed 1.0 pound of nitrogen per 1,000 square feet, shall consist of at least 20% slow-release nitrogen (SRN) fertilizer (NOTE: This represents the minimum percentage: use of higher SRN content is generally preferable, especially on sandy root zones, during stress and pre- stress periods, and when there are fewer annual applications of nitrogen made to a lawn) and the annual rate shall not exceed 3.2 pounds of actual nitrogen per thousand square feet. Single applications shall be done at intervals of no less than four weeks until the annual maximum is reached. o Grass clippings, leaves, or any other vegetative debris shall not be deposited into or within 50 feet of water bodies, retention and detention areas, drainage ditches or stormwater drains, or onto impervious surfaces, such as, but not limited to, roadways and sidewalks, except during scheduled clean-up programs. • Provide for routine inspection (at least annually) and maintenance of structural BMPs to remove sediment and debris. b. Additional Good Housekeeping Procedures • Routinely remove trash and debris from the parking lot and landscaped areas. Page 2 of 3 Project 3172201210 | Date – J anuary 19th, 2023 • General inspections shall be conducted after storm events greater than or equal to the 1-year. 24-hour storm event. • Use sand during winter months. Per the Town of Yarmouth standards, salt is not allowed. 3. Requirements for Routine Inspections and Maintenance of Stormwater BMPs a. Storm Sewer System • Inspect catch basins monthly and after storm events greater than or equal to the 1-year 24-hour storm event. • Catch basins shall be cleaned monthly. Any sediment and floatable pollutants shall be pumped from the basin and disposed of at an approved offsite facility in accordance with all applicable regulations. b. Hydrodynamic Separators • Routinely inspect the hydrodynamic separator (water quality unit) after storm events greater than or equal to the 1-year 24-hour storm event. • Follow manufacturer’s recommendations for typical maintenance. c. Infiltration Basin • Routinely remove trash and debris from the basin, at least once a month or more often if necessary. • Inspect the basin monthly, as well as after every major storm to ensure the basin is draining within 72 hours. • Inspect the basin semi -annually for settling, cracking erosion, leakage, tree growth on the embankments, and the condition of the vegetative cov er. • Mow the basin at least semi-annually to prevent woody growth, stimulate grass growth, and enhance nutrient removal . Do not mow when the ground is wet to avoid compaction of the bottom soils . • Inspect the basin semi -annually for sediment accumulation in the basin bottom. Remove accumulated sediment as necessary if it is negatively affecting the basin capacity and infiltration capability. When the soil is thoroughly dry, remove the top cracked layer of sediment, and till and re-seed the remaining soil. 4. Spill prevention and response plans • All reasonable precautions will be taken to prevent spills • If there is a spill event, the spilled material will be immediately directed away from stormwater intakes, infiltration basins, or drainage ways. The facility manager will be immediately notified to evaluate the spill and coordinate the necessary clean up. If necessary, soil remediation practices will be used. 5. Provisions for maintenance of lawns, gardens, and other landscaped areas • Routinely remove trash and debris from landscaped and vegetated areas. • Inspect landscaped areas and vegetative areas monthly to check health and density of plants. • Re-plant bare areas as necessary. • Apply erosion control measures if soil is exposed or erosion channels are forming. Page 3 of 3 Project 3172201210 | Date – J anuary 19th, 2023 6. Requirements for storage and use of fertilizers, herbicides, and pesticides • No pesticides are to be used unless a single spot treatment is required for a specific control application. • Refer to Town of Yarmouth’s Stormwater Regulations Section 2.05.2 for fertilizer application restrictions . 7. Training for staff or personnel involved with implementing Long-Term Pollution Prevention Plan • The owner (Eversource Energy) shall be responsible for training and/or hiri ng the appropriate personnel to implement the Long -Term Pollution Prevention Plan. 8. List of Emergency Contacts for implementing Long -Term Pollution Prevention Plan • The applicant (Eversource Energy) shall implement the Long -Term Pollution Prevention Plan and will create a list of emergency contacts once the site has been constructed. 9. Operation and Maintenance Log Form • Refer to attached Operation and Maintenance Log Form. Project 3172201210 OPERATION AND MAINTENANCE LOG FORM Inspection Date Inspector Name BMP Inspected Comments Recommendation Follow-up Inspection Required? (Yes/No)