D2_SOW.pdf

D2 WATER SYSTEM UPGRADES (CIM!0305!69F)

NOGALES RANGER DISTRICT

STATEMENT of WORK

Coronado National Forest

February 16, 2010 dmollet@fs.fed.us and bpayne@fs.fed.us

Throughout the campgrounds and recreation areas of the Coronado National Forest, water systems have been constructed to serve the recreating public with safe, clean potable water. A list of regular and deferred maintenance items are associated with each of these water systems – this project seeks to bring the systems up!to!date, and fix any current issues with the water distribution lines and tanks.

Regular and deferred maintenance items are also present for the water systems that serve Forest Service administrative sites through the National Forest. This project will address those issues as well. A detailed discussion of the projects located on the Nogales

Ranger District is listed below, by project site.

KENT SPRING CABIN

PURPOSE OF PROJECT

The Kent Spring water system is located in Madera Canyon of the Santa Rita Mountains on the Nogales Ranger District in Santa Cruz County at T20S R14E S1. Access to the site is provided by the two!lane dirt National Forest System Road (NFSR) 4075. This road can be access via NFSR 70 (Madera Canyon Road).

The water system currently serves the Kent Springs cabin, a facility that is slated as part of the Forest Service cabin rental program. The water source for the site is an existing spring (Kent Spring). Water is piped from the spring to a storage tank, where it is chlorinated and then distributed to the cabin via a distribution line.

The existing tank has been identified as substandard during numerous inspections, and there is currently no sedimentation tank between the storage tank and the spring box to decrease sediment load in the line. This project seeks to remedy those issues.

Existing Tank and Shed at Kent Springs Cabin Kent Springs Cabin and Deck

PLANNED WORK

Please see the attached Kent Spring Cabin Water System Improvements plans (Sheets 1!

6) and Thrust Block detail. The proposed work for the Kent Springs water system includes:

Removing and replacing the existing water tank with a new 1,000 gallon potable water tank. Tank will be relocated to a site adjacent to the house, underneath the deck.

Removing and replacing 400 feet of 2” and ¾” galvanized steel water main between the old tank location and the new tank site. New main is to be 2”

HDPE.

Installing a new inline filter to capture fine debris in the raw water.

Removing the existing shed, and installing a new enclosure with which will house a new chlorinator, pump, meter and pressure tank assemblies, including associated electric/automated controls. This enclosure will also be located underneath the deck, adjacent to the house.

Fencing the tank with 6 foot!high chain!link fence to prevent entry.

BOG SPRINGS

PURPOSE OF PROJECT

The Bog Springs water system is located in Madera Canyon of the Santa Rita Mountains on the Nogales Ranger District in Santa Cruz County at Township 19 South, Range 14 East, Sections 26, 35, and 36. Access to the system is provided by the two!lane dirt National

Forest System Road (NFSR) 70A. This road can be accessed via NFSR 70 (Madera Canyon

Road).

The Bog Springs water system currently serves a majority of the recreating public in

Madera Canyon. Its distribution system feeds hydrants at the Bog Springs Campground, Madera Trailhead Picnic Area, White House Picnic Area, and Proctor Trailhead Parking.

The current water source for the system is a springbox connected to the Bog spring.

Maintenance on the Bog Springs system has increased to a point that significant changes are needed to avoid continued issues. One of the two 20,000 gallon steel water tanks is in need of repair (the gaskets are leaking), and the existing shut!off valves and pressure release valves on the system are old and ceasing to function, or are buried and not functioning properly. Additionally, fencing needs to be constructed to secure the sediment tank from unauthorized entry, and the chlorinator needs to be replaced.

Finally, the main distribution line was original installed in such a manner that it separates easily, and there is a known break in the line that leads to the Madera Picnic and

Trailhead area – the most logical remedy for this issue is full line replacement.

Existing Tanks at Bog Springs

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