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725-6MW-1214-Monitoring Well Project

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State & Local

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

Caltrans has approved an encroachment permit for Rosecrans Partners LLC to access a single groundwater monitoring well, designated OB-21D, situated within state right-of-way between the Ayres Hotel and the southbound Route 405 off-ramp at Hindry Avenue in Manhattan Beach. The well, located at postmile 19.21 in Los Angeles County, will be sampled quarterly by Blaine Tech Services under the supervision of Bowyer Environmental Consulting, Inc., which is responsible for ensuring all equipment used is either new or properly decontaminated. All groundwater removed during sampling must be collected and hauled away from the site, with approximately seven sampling events planned over the permit's duration. Following the completion of monitoring, the well will be permanently abandoned according to regulatory standards. A licensed C-57 contractor will over-drill the well to total depth using a 10-inch hollow-stem auger to remove the casing, filter pack, and seal. The borehole will then be backfilled from the bottom up with a bentonite/cement slurry, terminating 0.5 feet below the surface, with the final 0.5 foot sealed using asphalt or cement to restore the original grade. No additional excavation, utility relocation, or acquisition of new right-of-way is required, and all work will be conducted without disrupting surrounding infrastructure or public services.

General Info

Rosecrans Partners LLC to sample OB-21D well quarterly, then permanently abandon it per regulations using C-57 contractor.

Agency

California → Caltrans, District 7 - Los Angeles

NAICS

237990 - Other Heavy and Civil Engineering ConstructionView NAICS

Place of Performance

Manhattan Beach, CA

Set-Aside

NONE

Documents

(0)

No documents available

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Timeline

PostedMay 29

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Organization & Contact Information

AgencyCalifornia → Caltrans, District 7 - Los Angeles

Contacts1 person available

OfficeN/A

Organization / Agency

California → Caltrans, District 7 - Los Angeles

Office AddressN/A

Contacts

Mojgan AbbassiSenior Environmental Scientist

contact@example.gov

+1 (555) 000-0000

Full Description

Caltrans approves the encroachment permit for Rosecrans Partners LLC, seeking access to one (1) groundwater monitoring well located within Caltrans right-of-way. The well (OB-21D) is located between Ayres Hotel (14400 Hindry Ave., Hawthorne, CA 90250) and the southbound Route 405 off-ramp at Hindry Ave. at postmile (PM) 19.21, in the City of Manhattan Beach, County of Los Angeles. The well sampling activities will be conducted quarterly by Blaine Tech Services (contractor) and supervised by Bowyer Environmental Consulting, Inc. (BEC). BEC will ensure that only decontaminated or new monitoring and sampling equipment is utilized during quarterly sampling events. All groundwater purged from the well is collected in containers and removed from the site. It is estimated that approximately seven (7) quarterly sampling rounds will be conducted over the requested access period. BEC acknowledges that the OB-21D well will be abandoned following quarterly groundwater monitoring, in accordance with applicable regulatory requirements. A licensed (C-57 Contractor) driller shall over-drill the existing well to total depth using a 10-inch outside diameter hollow-stem auger to remove the well casing, filter pack, and annular seal. Once drilling is complete, the borehole will be backfilled with a bentonite/cement slurry from the bottom up to 0.5 feet below ground surface, using an auger or a PVC tremie pipe, per California Well Standard. The upper 0.5 foot will be completed with asphalt or cement to match the existing surface. There will be no other excavation. No public utilities will be relocated, and no new right-of-way will be acquired for the project.