republic-os/legislation/us/states/co/2019a/hb-19-1113.md

---
type: "Bill"
title: "Protect Water Quality Adverse Mining Impacts"
description: "Hard rock mining - mined land reclamation board - reclamation plan - water quality treatment - financial assurance. Current law does not address reliance on perpetual water treatment as the means to minimize impacts to water quality in a reclamation plan for a mining operation. Section 1 of the act requires most reclamation plans to demonstrate, by substantial evidence, a reasonably foreseeable end date for any water quality treatment necessary to ensure compliance with applicable water quality standards."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2019A"
identifier: "HB 19-1113"
citation: "Colorado HB 19-1113 (2019A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Barbara McLachlan", "Dylan Roberts", "Kerry Donovan"]
version_count: 10
action_count: 16
vote_count: 5
first_action: "2019-01-15T07:00:00+00:00"
last_action: "2019-04-04T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/d2a75f68-b62b-4a19-87b1-458f918fc9a8"
source_url: "http://leg.colorado.gov/bills/hb19-1113"
source_hash: "de1d6a7d9729bef7e1f5dd0296556a4ce72eebf326db1371ec138d94285cfddf"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-co"]
---

# Colorado HB 19-1113 (2019A) — Protect Water Quality Adverse Mining Impacts

Hard rock mining - mined land reclamation board - reclamation plan - water quality treatment - financial assurance. Current law does not address reliance on perpetual water treatment as the means to minimize impacts to water quality in a reclamation plan for a mining operation. Section 1 of the act requires most reclamation plans to demonstrate, by substantial evidence, a reasonably foreseeable end date for any water quality treatment necessary to ensure compliance with applicable water quality standards.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Committee Amendment** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2019a_hb1113_s_agr_001.pdf)
2. **Engrossed (02/06/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_1113_eng.pdf)
3. **Final Act (03/27/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_1113_enr.pdf)
4. **Introduced (01/15/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_1113_01.pdf)
5. **PA1 (02/06/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_1113raa_01.pdf)
6. **PA2 (03/08/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_1113sagr_01.pdf)
7. **Reengrossed (02/07/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_1113_ren.pdf)
8. **Rerevised (03/14/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_1113_rer.pdf)
9. **Revised (03/13/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/documents/2019A/bills/2019a_1113_rev.pdf)
10. **Signed Act (04/04/2019)** (committee substitute) — [source](http://leg.colorado.gov/sites/default/files/2019a_1113_signed.pdf)

## Votes

- COW * — **16–18** (fail) · lower
- BILL — **22–13** (pass) · lower
- REPASS — **46–18** (pass) · lower
- CONCUR — **49–15** (pass) · lower
- BILL — **44–19** (pass) · lower

## Sponsors

- Barbara McLachlan — primary (person)
- Dylan Roberts — primary (person)
- Kerry Donovan — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2019-04-04T06:00:00+00:00** Governor Signed `executive-signature`
- **2019-03-27T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2019-03-27T06:00:00+00:00** Signed by the President of the Senate
- **2019-03-26T06:00:00+00:00** Signed by the Speaker of the House
- **2019-03-18T06:00:00+00:00** House Considered Senate Amendments - Result was to Concur - Repass
- **2019-03-14T06:00:00+00:00** House Considered Senate Amendments - Result was to Laid Over to 03/18/2019
- **2019-03-14T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
- **2019-03-13T06:00:00+00:00** Senate Second Reading Passed with Amendments - Committee `reading-2`
- **2019-03-12T06:00:00+00:00** Senate Second Reading Laid Over Daily - No Amendments
- **2019-03-11T06:00:00+00:00** Senate Second Reading Laid Over Daily - No Amendments
- **2019-03-07T07:00:00+00:00** Senate Committee on Agriculture & Natural Resources Refer Amended to Senate Committee of the Whole `referral-committee, committee-passage`
- **2019-02-11T07:00:00+00:00** Introduced In Senate - Assigned to Agriculture & Natural Resources `introduction`
- **2019-02-07T07:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
- **2019-02-06T07:00:00+00:00** House Second Reading Special Order - Passed with Amendments - Committee
- **2019-02-04T07:00:00+00:00** House Committee on Rural Affairs & Agriculture Refer Amended to House Committee of the Whole `referral-committee, committee-passage`
- **2019-01-15T07:00:00+00:00** Introduced In House - Assigned to Rural Affairs & Agriculture `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/d2a75f68-b62b-4a19-87b1-458f918fc9a8`. Confidence: reported (aggregated from official Colorado legislature records).