Las Virgenes Municipal Water District Opengov #2026-RFP-053

Certified arborist services and tree mitigation monitoring for LVMWD’s Twin Lakes Pipeline Project

Las Virgenes Municipal Water District is seeking certified arborist services for its Twin Lakes Pump Station Pipeline Project in Chatsworth, alongside project plans that describe related pipeline construction. - Buyer: Las Virgenes Municipal Water District (LVMWD), Engineering & Facilities; the work is in the Chatsworth area of Los Angeles and involves parkland overseen by the City of Los Angeles Recreation and Parks Department. - Requested services: Update the Protected Tree Report; verify and document tree conditions; coordinate and monitor tree protection during construction; observe mitigation planting; monitor mitigation-tree condition and survivability; and provide a final closeout report. Construction monitoring covers work near protected trees and their driplines, including excavation, root work, tunneling, and pruning. - Tree requirements: The prior assessment identified 56 potentially affected protected trees. Coast live oaks Trees 352 and 355 are identified for removal with mitigation; sycamores Trees 362 and 363 are identified for removal without mitigation. Branch removal from oaks Trees 365 and 367 requires mitigation, and tunneling beneath Tree 367’s roots is specified. Project plans call for planting eight 24-inch-box coast live oaks; the tree assessment also gives tree-specific mitigation sizing requirements. Protect trees under the applicable City of Los Angeles ordinance and Recreation and Parks specifications. - Provider qualifications and pricing: The arborist must have at least five years of relevant experience and be an ISA Certified Arborist or Registered Consulting Arborist. Pricing is requested by scope item, with position-based hourly rates and estimated hours by task. - Related project-plan items: Plans describe a new approximately 16-inch water pipeline, pump-station and vault modifications, a relocated surge tank, valves, electrical/instrumentation work, testing, disinfection, and restoration. The plans are marked not for construction. No product purchases or product part numbers are specified in the arborist-services request itself. - Named organizations: CLA-VAL and Jensen are named product manufacturers; Kennedy Jenks Consultants commissioned the tree assessment, and JTL Consultants prepared it. No prospective arborist vendor is identified.

Description

Las Virgenes Municipal Water District is seeking proposals for certified arborist services supporting its Twin Lakes Pump Station Pipeline Project, involving a new water transmission pipeline and related improvements in the Chatsworth area. Work includes updating the Protected Tree Report, preconstruction coordination and documentation, construction monitoring, mitigation planting observation, and monitoring mitigation trees for three years. Deliverables include reports and records covering tree protection, construction observations, planting, and final closeout. Proposals are due December 4, 2026, and attendance at the November 19, 2026 pre-proposal meeting is mandatory.

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